Project acronym H3.3CANCER
Project The histone H3.3 variant in brain cancer pathogenesis
Researcher (PI) Paolo Salomoni
Host Institution (HI) DEUTSCHES ZENTRUM FUR NEURODEGENERATIVE ERKRANKUNGEN EV
Call Details Consolidator Grant (CoG), LS4, ERC-2013-CoG
Summary Epigenetic reprogramming is a hallmark of brain cancer. Remarkably, driver mutations of the histone H3.3 variant and its loading machinery have been recently found in paediatric glioblastoma multiforme (GBM), a devastating neoplasm originating from transformed neural precursors. Thus, the very basic building blocks of chromatin can be mutated in cancer.
The present challenge is to define at which level altered H3.3 loading influences GBM pathogenesis and provide clues into the underlying mechanisms. Based on work from our group and others, we hypothesise that alterations of H3.3 function/deposition would lead to epigenetic changes, deregulated transcription at bivalent loci and other genomic regions, and alterations of telomere maintenance mechanisms, in turn contributing to tumourigenesis.
The main objectives of this proposal are to:
1. Examine the impact of H3.3 mutations on brain cancer pathogenesis, by determining the effect of mutant H3.3 expression on neural precursor cell transformation (A), and tumour maintenance (B).
2. Define the molecular changes caused by incorporation of H3.3 mutants into the genome and their involvement in tumourigenesis, by A. determining the genome-wide distribution of WT and mutant H3.3 proteins, B. identifying mutant H3.3-driven transcriptional and epigenetic changes, C. defining effects on telomere maintenance mechanisms, and D. connecting mutant H3.3-driven molecular changes to the biological phenotypes.
The discovery of mutations in histones and their loading machinery represents a paradigm change in the field of cancer epigenetics. We anticipate this study to provide key insights into the role of these alterations in chromatin regulation and cancer pathogenesis. More broadly, this work will increase our understanding of the fundamental mechanisms governing chromatin modification in mammalian cells.
Summary
Epigenetic reprogramming is a hallmark of brain cancer. Remarkably, driver mutations of the histone H3.3 variant and its loading machinery have been recently found in paediatric glioblastoma multiforme (GBM), a devastating neoplasm originating from transformed neural precursors. Thus, the very basic building blocks of chromatin can be mutated in cancer.
The present challenge is to define at which level altered H3.3 loading influences GBM pathogenesis and provide clues into the underlying mechanisms. Based on work from our group and others, we hypothesise that alterations of H3.3 function/deposition would lead to epigenetic changes, deregulated transcription at bivalent loci and other genomic regions, and alterations of telomere maintenance mechanisms, in turn contributing to tumourigenesis.
The main objectives of this proposal are to:
1. Examine the impact of H3.3 mutations on brain cancer pathogenesis, by determining the effect of mutant H3.3 expression on neural precursor cell transformation (A), and tumour maintenance (B).
2. Define the molecular changes caused by incorporation of H3.3 mutants into the genome and their involvement in tumourigenesis, by A. determining the genome-wide distribution of WT and mutant H3.3 proteins, B. identifying mutant H3.3-driven transcriptional and epigenetic changes, C. defining effects on telomere maintenance mechanisms, and D. connecting mutant H3.3-driven molecular changes to the biological phenotypes.
The discovery of mutations in histones and their loading machinery represents a paradigm change in the field of cancer epigenetics. We anticipate this study to provide key insights into the role of these alterations in chromatin regulation and cancer pathogenesis. More broadly, this work will increase our understanding of the fundamental mechanisms governing chromatin modification in mammalian cells.
Max ERC Funding
1 999 998 €
Duration
Start date: 2014-05-01, End date: 2019-04-30
Project acronym HAPLOID
Project “Yeast” genetics in mammalian cells to identify fundamental mechanisms of physiology and pathophysiology
Researcher (PI) Josef Penninger
Host Institution (HI) INSTITUT FUER MOLEKULARE BIOTECHNOLOGIE GMBH
Call Details Advanced Grant (AdG), LS4, ERC-2013-ADG
Summary "Some organisms such as yeast or social insects are haploid, i.e. they carry a single set of chromosomes. Organisms with a single copy of their genome provide a basis for genetic analyses where any recessive mutation of essential genes will show a clear phenotype due to the absence of a second gene copy. Recessive genetic screens have markedly contributed to our understanding of normal development, basic physiology, and disease. However, all somatic mammalian cells carry two copies of chromosomes (diploidy) that obscure mutational screens. Although deemed impossible, we were able to develop generate mammalian haploid embryonic stem cells, thereby breaking a paradigm of biology.
Our novel stem opens the possibility of combining the power of a haploid genome with pluripotency of embryonic stem cells to uncover fundamental biological processes in defined cell types at a genomic scale. The following projects are proposed:
1. Towards“yeast” genetics in mammalian stem cells. Development of optimized technologies for rapid, genome-wide screens via repairable mutagenesis. Mutational bar-coding to introduce quantitative genomics to mammalian biology.
2. Forward genetic screens to uncover essential stem cell genes, identify novel stemness factors, develop improved systems for iPS cell derivation, and to perform synthetic lethal screens for anti-cancer drugs.
3. Reverse genetics using to identify and validate genes involved in cardiovascular physiology, brown and white fat cell development, and pain sensing.
4. Hit validation – exemplified by resistance to the bioweapon ricin.
Haploid embryonic stem cells carry the promise to revolutionize functional genetics and allow rapid, near whole genome-wide mutational forward genetics analysis and reverse genetics in defined cell types. Our systems will be made available to all researchers and the knowledge gained from our studies should fundamentally impact on the basic understanding of physiology and disease pathogenesis."
Summary
"Some organisms such as yeast or social insects are haploid, i.e. they carry a single set of chromosomes. Organisms with a single copy of their genome provide a basis for genetic analyses where any recessive mutation of essential genes will show a clear phenotype due to the absence of a second gene copy. Recessive genetic screens have markedly contributed to our understanding of normal development, basic physiology, and disease. However, all somatic mammalian cells carry two copies of chromosomes (diploidy) that obscure mutational screens. Although deemed impossible, we were able to develop generate mammalian haploid embryonic stem cells, thereby breaking a paradigm of biology.
Our novel stem opens the possibility of combining the power of a haploid genome with pluripotency of embryonic stem cells to uncover fundamental biological processes in defined cell types at a genomic scale. The following projects are proposed:
1. Towards“yeast” genetics in mammalian stem cells. Development of optimized technologies for rapid, genome-wide screens via repairable mutagenesis. Mutational bar-coding to introduce quantitative genomics to mammalian biology.
2. Forward genetic screens to uncover essential stem cell genes, identify novel stemness factors, develop improved systems for iPS cell derivation, and to perform synthetic lethal screens for anti-cancer drugs.
3. Reverse genetics using to identify and validate genes involved in cardiovascular physiology, brown and white fat cell development, and pain sensing.
4. Hit validation – exemplified by resistance to the bioweapon ricin.
Haploid embryonic stem cells carry the promise to revolutionize functional genetics and allow rapid, near whole genome-wide mutational forward genetics analysis and reverse genetics in defined cell types. Our systems will be made available to all researchers and the knowledge gained from our studies should fundamentally impact on the basic understanding of physiology and disease pathogenesis."
Max ERC Funding
2 499 951 €
Duration
Start date: 2014-02-01, End date: 2019-01-31
Project acronym HEART
Project "The Highly Efficient And Reliable smart Transformer (HEART), a new Heart for the Electric Distribution System"
Researcher (PI) Marco Liserre
Host Institution (HI) CHRISTIAN-ALBRECHTS-UNIVERSITAET ZU KIEL
Call Details Consolidator Grant (CoG), PE7, ERC-2013-CoG
Summary "In the last 10 years, power electronics has moved significantly towards the electric grid, making it more flexible and decentralized. Still important challenges remain. One of the most thrilling is re-inventing the distribution transformer after more than 125 years since its first use in the electrification of a city. In fact, actual distribution transformers can no longer fulfill the requirements of a modern electric grid highly dominated by distributed sources and new sizable loads, like heat pumps and electric vehicles.
This project proposes the invention of a novel “Smart Transformer” (ST), based on a modular architecture of units made by power electronics converters, that will be able to manage the energy and the information flows among sources and loads in the distribution area with the goal of decoupling it from the rest of the bulk power system. Actual proposals of Smart Transformers cannot compete in terms of cost, efficiency and reliability with traditional transformers.
This project has decided to take this challenge with a paradigm shift in how to approach it and a new set of methodologies. The breakthrough results of this research will be obtained taking the following high-risk high-gain bet: significantly influence the efficiency and the reliability of the Smart Transformer by routing the energy flows among its power converter units. A new understanding of how the energy flows are managed by the modular connection of power converter units will guide the design of new architectures for the ST allowing different routes for the energy. Graph theory will be used to find optimal paths for the energy flows with the goal of maximizing efficiency and reliability. The energy flows will be managed by relying on information coming from the electric distribution system sensors (requirements) and from the power module sensors (constraints).
The holy grail of this research is to provide a new durable heart to the electric distribution system."
Summary
"In the last 10 years, power electronics has moved significantly towards the electric grid, making it more flexible and decentralized. Still important challenges remain. One of the most thrilling is re-inventing the distribution transformer after more than 125 years since its first use in the electrification of a city. In fact, actual distribution transformers can no longer fulfill the requirements of a modern electric grid highly dominated by distributed sources and new sizable loads, like heat pumps and electric vehicles.
This project proposes the invention of a novel “Smart Transformer” (ST), based on a modular architecture of units made by power electronics converters, that will be able to manage the energy and the information flows among sources and loads in the distribution area with the goal of decoupling it from the rest of the bulk power system. Actual proposals of Smart Transformers cannot compete in terms of cost, efficiency and reliability with traditional transformers.
This project has decided to take this challenge with a paradigm shift in how to approach it and a new set of methodologies. The breakthrough results of this research will be obtained taking the following high-risk high-gain bet: significantly influence the efficiency and the reliability of the Smart Transformer by routing the energy flows among its power converter units. A new understanding of how the energy flows are managed by the modular connection of power converter units will guide the design of new architectures for the ST allowing different routes for the energy. Graph theory will be used to find optimal paths for the energy flows with the goal of maximizing efficiency and reliability. The energy flows will be managed by relying on information coming from the electric distribution system sensors (requirements) and from the power module sensors (constraints).
The holy grail of this research is to provide a new durable heart to the electric distribution system."
Max ERC Funding
1 996 720 €
Duration
Start date: 2014-05-01, End date: 2019-04-30
Project acronym HELENA
Project Heavy-Element Nanowires
Researcher (PI) Erik Petrus Antonius Maria Bakkers
Host Institution (HI) TECHNISCHE UNIVERSITEIT DELFT
Call Details Consolidator Grant (CoG), PE5, ERC-2013-CoG
Summary "Nanowires are a powerful and versatile platform for a broad range of applications. Among all semiconductors, the heavy-elements materials exhibit the highest electron mobilities, strongest spin-orbit coupling and best thermoelectric properties. Nonetheless, heavy-element nanowires have been unexplored. With this proposal we unite the unique advantages of design freedom of nanowires with the special properties of heavy-element semiconductors. We specifically reveal the potential of heavy-element nanowires in the areas of thermoelectrics, and topological insulators. Using our strong track record in this area, we will pioneer the synthesis of this new class of materials and study their intrinsic materials properties. Starting point are nanowires of InSb and PbTe grown using the vapor-liquid-solid mechanism. Our aims are 1) to obtain highest-possible electron mobilities for these bottom-up fabricated materials by investigating new materials combinations of different semiconductor classes to effectively passivate the nanowire surface and we will eliminate impurities; 2) to investigate and optimize thermoelectric properties by developing advanced superlattice and core/shell nanowire structures where electronic and phononic transport is decoupled; and 3) to fabricate high-quality planar nanowire networks, which enable four-point electronic transport measurements and allow precisely determining carrier concentration and mobility. Besides the fundamentally interesting materials science, the heavy-element nanowires will have major impact on the fields of renewable energy, new (quasi) particles and quantum information processing. Recently, the first signatures of Majorana fermions have been observed in our InSb nanowires. With the proposed nanowire networks the special properties of this recently discovered particle can be tested for the first time."
Summary
"Nanowires are a powerful and versatile platform for a broad range of applications. Among all semiconductors, the heavy-elements materials exhibit the highest electron mobilities, strongest spin-orbit coupling and best thermoelectric properties. Nonetheless, heavy-element nanowires have been unexplored. With this proposal we unite the unique advantages of design freedom of nanowires with the special properties of heavy-element semiconductors. We specifically reveal the potential of heavy-element nanowires in the areas of thermoelectrics, and topological insulators. Using our strong track record in this area, we will pioneer the synthesis of this new class of materials and study their intrinsic materials properties. Starting point are nanowires of InSb and PbTe grown using the vapor-liquid-solid mechanism. Our aims are 1) to obtain highest-possible electron mobilities for these bottom-up fabricated materials by investigating new materials combinations of different semiconductor classes to effectively passivate the nanowire surface and we will eliminate impurities; 2) to investigate and optimize thermoelectric properties by developing advanced superlattice and core/shell nanowire structures where electronic and phononic transport is decoupled; and 3) to fabricate high-quality planar nanowire networks, which enable four-point electronic transport measurements and allow precisely determining carrier concentration and mobility. Besides the fundamentally interesting materials science, the heavy-element nanowires will have major impact on the fields of renewable energy, new (quasi) particles and quantum information processing. Recently, the first signatures of Majorana fermions have been observed in our InSb nanowires. With the proposed nanowire networks the special properties of this recently discovered particle can be tested for the first time."
Max ERC Funding
2 698 447 €
Duration
Start date: 2014-09-01, End date: 2019-08-31
Project acronym HMRI
Project Non-Invasive In-Vivo Histology in Health and Disease Using Magnetic Resonance Imaging (MRI)
Researcher (PI) Nikolaus Weiskopf
Host Institution (HI) MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV
Call Details Consolidator Grant (CoG), LS5, ERC-2013-CoG
Summary Understanding of the normal and diseased brain crucially depends on reliable knowledge of its microstructure. Important functions are mediated by small cortical units (columns) and even small changes in the microstructure can cause debilitating diseases. So far, this microstructure can only be determined using invasive methods such as, e.g., ex-vivo histology. This limits neuroscience, clinical research and diagnosis.
My research vision is to develop novel methods for high-resolution magnetic resonance imaging (MRI) at 3T-9.4T to reliably characterize and quantify the detailed microstructure of the human cortex.
This MRI-based histology will be used to investigate the cortical microstructure in health and focal cortical degeneration. Structure-function relationships in visual cortex will be elucidated in-vivo, particularly, ocular dominance columns and stripes. Specific microstructural changes in focal cortical degeneration due to Alzheimer’s disease and monocular blindness will be determined, including amyloid plaque imaging.
To resolve the subtle structures and disease related changes, which have not previously been delineated in-vivo by anatomical MRI, unprecedented isotropic imaging resolution of up to 250 µm is essential. Methods for high-resolution myelin and iron mapping will be developed from novel quantitative MRI approaches that I have previously established. Super-resolution diffusion and susceptibility imaging will be developed to capture the neuropil microstructure. Anatomical imaging will be complemented by advanced high-resolution functional MRI. The multi-modal MRI data will be integrated into a unified model of MRI contrasts, cortical anatomy and tissue microstructure.
My ambitious goal of developing in vivo MRI-based histology can only be achieved by an integrative approach combining innovations in MR physics, modelling and tailored (clinical) neuroscience experiments. If successful, the project will transform research and clinical imaging.
Summary
Understanding of the normal and diseased brain crucially depends on reliable knowledge of its microstructure. Important functions are mediated by small cortical units (columns) and even small changes in the microstructure can cause debilitating diseases. So far, this microstructure can only be determined using invasive methods such as, e.g., ex-vivo histology. This limits neuroscience, clinical research and diagnosis.
My research vision is to develop novel methods for high-resolution magnetic resonance imaging (MRI) at 3T-9.4T to reliably characterize and quantify the detailed microstructure of the human cortex.
This MRI-based histology will be used to investigate the cortical microstructure in health and focal cortical degeneration. Structure-function relationships in visual cortex will be elucidated in-vivo, particularly, ocular dominance columns and stripes. Specific microstructural changes in focal cortical degeneration due to Alzheimer’s disease and monocular blindness will be determined, including amyloid plaque imaging.
To resolve the subtle structures and disease related changes, which have not previously been delineated in-vivo by anatomical MRI, unprecedented isotropic imaging resolution of up to 250 µm is essential. Methods for high-resolution myelin and iron mapping will be developed from novel quantitative MRI approaches that I have previously established. Super-resolution diffusion and susceptibility imaging will be developed to capture the neuropil microstructure. Anatomical imaging will be complemented by advanced high-resolution functional MRI. The multi-modal MRI data will be integrated into a unified model of MRI contrasts, cortical anatomy and tissue microstructure.
My ambitious goal of developing in vivo MRI-based histology can only be achieved by an integrative approach combining innovations in MR physics, modelling and tailored (clinical) neuroscience experiments. If successful, the project will transform research and clinical imaging.
Max ERC Funding
2 000 000 €
Duration
Start date: 2014-09-01, End date: 2019-08-31
Project acronym HOME
Project Habitability of Martian Environments: Exploring the Physiological and Environmental Limits of Life
Researcher (PI) Dirk Schulze-Makuch
Host Institution (HI) TECHNISCHE UNIVERSITAT BERLIN
Call Details Advanced Grant (AdG), PE9, ERC-2013-ADG
Summary The low average temperature and low water activity of the Martian near-surface environment makes it challenging for living organisms to persist and propagate. Nonetheless, recent mission results indicate that environmental conditions exceed locally and temporarily the lower thresholds for life to exist. Furthermore, specific soil minerals, or combinations thereof, appear to provide a suitable habitat for microbial life, especially if associated with low-temperature brines or hygroscopic salts. Thus, a quantitative understanding of the habitability potential of the Martian near-surface environment, past and present, is very much needed and the focus of this proposal. To achieve this objective, we will test different types of soils and some of Earth’s hardiest organisms, using them as models (‘Mars-analogues’), to see if they can survive and perhaps even grow under the various environmental stresses known to exist on Mars. A major tool of our laboratory investigations will be the experimentally proven state-of-the-art Mars Simulation Chamber at the German AeroSpace Center, to which various soils materials and microorganisms will be exposed. The planned experimental investigations and models will be concurrently updated by analyzed mission data, particularly from landers and rovers (e.g., Curiosity Rover), to adjust our work to the newest Martian geochemical and environmental data available. Results from our proposed work will timely provide critical scientific knowledge to interpret incoming data from ESA’s ExoMars mission, which is scheduled for launch in 2016/2018. As one important deliverable of our work we will also construct a Mars Soil Analyzer, an instrument which will be designed for a future mission to Mars with the objective to achieve Technology Readiness Level 6 at the completion of the proposed study.
Summary
The low average temperature and low water activity of the Martian near-surface environment makes it challenging for living organisms to persist and propagate. Nonetheless, recent mission results indicate that environmental conditions exceed locally and temporarily the lower thresholds for life to exist. Furthermore, specific soil minerals, or combinations thereof, appear to provide a suitable habitat for microbial life, especially if associated with low-temperature brines or hygroscopic salts. Thus, a quantitative understanding of the habitability potential of the Martian near-surface environment, past and present, is very much needed and the focus of this proposal. To achieve this objective, we will test different types of soils and some of Earth’s hardiest organisms, using them as models (‘Mars-analogues’), to see if they can survive and perhaps even grow under the various environmental stresses known to exist on Mars. A major tool of our laboratory investigations will be the experimentally proven state-of-the-art Mars Simulation Chamber at the German AeroSpace Center, to which various soils materials and microorganisms will be exposed. The planned experimental investigations and models will be concurrently updated by analyzed mission data, particularly from landers and rovers (e.g., Curiosity Rover), to adjust our work to the newest Martian geochemical and environmental data available. Results from our proposed work will timely provide critical scientific knowledge to interpret incoming data from ESA’s ExoMars mission, which is scheduled for launch in 2016/2018. As one important deliverable of our work we will also construct a Mars Soil Analyzer, an instrument which will be designed for a future mission to Mars with the objective to achieve Technology Readiness Level 6 at the completion of the proposed study.
Max ERC Funding
2 494 215 €
Duration
Start date: 2014-08-01, End date: 2019-07-31
Project acronym HyLife
Project Exploiting hybrids between annual and perennial plant species to identify genes conferring agronomically important traits
Researcher (PI) George Michael Coupland
Host Institution (HI) MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV
Call Details Advanced Grant (AdG), LS9, ERC-2013-ADG
Summary Flowering plants exhibit a variety of different life cycles. This variation contributes in nature to adaptation to diverse environments and in agriculture to optimising crop yield. Annual monocarpic species flower once during their life, produce seeds and then undergo generalized senescence leading to death of the plant. By contrast polycarpic perennials survive seed production and live for many years flowering repeatedly. Most of our major crops are monocarpic annuals but perennials predominate in many ecological niches. Perennials exhibit phenotypic traits that would be advantageous for crops, such as an extended growing season, long duration of flowering and seed set as well as longer roots that more efficiently utilize nutrients and water supply. The high productivity of perennials explains their current use as sources of biomass. I propose here to use the progeny of hybrids between annual and perennial species in the Brassicaceae to isolate genes that confer key differences between these life histories. The utility of such genes in improving annual crops will then be tested. Arabis alpina and Arabis montbretiana are sister species that are respectively perennial and annual. We produced hybrids between these species and from them derived segregating populations by backcrossing. Here I propose to extensively genotype and phenotype these populations to identify genes promoting or suppressing senescence after flowering as well as those controlling the duration and extent of flowering. Orthologues of these genes will be identified in closely related Brassica species and alleles conferring perennial traits introduced into annual oil seed rape using genetic as well as transgenic strategies. Particularly those genes suppressing senescence and extending the duration of flowering will be tested for their effects on yield. This knowledge-based approach to introducing perennial traits into annual crops is expected to generate novel phenotypic variation that enhances yield.
Summary
Flowering plants exhibit a variety of different life cycles. This variation contributes in nature to adaptation to diverse environments and in agriculture to optimising crop yield. Annual monocarpic species flower once during their life, produce seeds and then undergo generalized senescence leading to death of the plant. By contrast polycarpic perennials survive seed production and live for many years flowering repeatedly. Most of our major crops are monocarpic annuals but perennials predominate in many ecological niches. Perennials exhibit phenotypic traits that would be advantageous for crops, such as an extended growing season, long duration of flowering and seed set as well as longer roots that more efficiently utilize nutrients and water supply. The high productivity of perennials explains their current use as sources of biomass. I propose here to use the progeny of hybrids between annual and perennial species in the Brassicaceae to isolate genes that confer key differences between these life histories. The utility of such genes in improving annual crops will then be tested. Arabis alpina and Arabis montbretiana are sister species that are respectively perennial and annual. We produced hybrids between these species and from them derived segregating populations by backcrossing. Here I propose to extensively genotype and phenotype these populations to identify genes promoting or suppressing senescence after flowering as well as those controlling the duration and extent of flowering. Orthologues of these genes will be identified in closely related Brassica species and alleles conferring perennial traits introduced into annual oil seed rape using genetic as well as transgenic strategies. Particularly those genes suppressing senescence and extending the duration of flowering will be tested for their effects on yield. This knowledge-based approach to introducing perennial traits into annual crops is expected to generate novel phenotypic variation that enhances yield.
Max ERC Funding
2 490 624 €
Duration
Start date: 2014-02-01, End date: 2019-01-31
Project acronym HYQS
Project Hybrid atom-ion Quantum Systems
Researcher (PI) René Gerritsma
Host Institution (HI) UNIVERSITEIT VAN AMSTERDAM
Call Details Starting Grant (StG), PE2, ERC-2013-StG
Summary This project focusses on realizing and studying a new hybrid ultra-cold atom-ion system for studying quantum many-body physics. It combines state-of-the-art technologies in quantum optics and quantum gases. The proposed system of cold (fermionic) atoms interacting with ion crystals has surprising analogies with natural solid state systems and molecules, with now by fermionic 6Li atoms in place of electrons and heavy 174Yb+ ions in place of ionic cores. In particular, an atomic band structure may arise with tunable atom-phonon interactions. The proposed experimental approach is inspired by advances in pioneering experiments with hybrid atom-ion systems. By using a new atom-ion combination that has the highest experimentally feasible mass ratio of 29 (Li and Yb+), heating due to the dynamical trapping potential of the ions is suppressed. This eliminates an important road block in existing hybrid atom-ion experiments towards reaching deep into the quantum regime. I will use optical micro-traps in conjunction with segmented ion traps to study the system in a regime with a small number of atoms (1-100) and ions. This offers unprecedented control over the quantum states of atoms and ions. Engineering non-classical states in the ions will allow for quantum enhanced measurements of the combined atom-ion system, with single atom and single collision resolution. State-dependence in the atom-ion interactions can be employed to engineer quantum potentials for the atoms, leading to large scale ion-atomic Schrödinger cat-type entanglement.
Summary
This project focusses on realizing and studying a new hybrid ultra-cold atom-ion system for studying quantum many-body physics. It combines state-of-the-art technologies in quantum optics and quantum gases. The proposed system of cold (fermionic) atoms interacting with ion crystals has surprising analogies with natural solid state systems and molecules, with now by fermionic 6Li atoms in place of electrons and heavy 174Yb+ ions in place of ionic cores. In particular, an atomic band structure may arise with tunable atom-phonon interactions. The proposed experimental approach is inspired by advances in pioneering experiments with hybrid atom-ion systems. By using a new atom-ion combination that has the highest experimentally feasible mass ratio of 29 (Li and Yb+), heating due to the dynamical trapping potential of the ions is suppressed. This eliminates an important road block in existing hybrid atom-ion experiments towards reaching deep into the quantum regime. I will use optical micro-traps in conjunction with segmented ion traps to study the system in a regime with a small number of atoms (1-100) and ions. This offers unprecedented control over the quantum states of atoms and ions. Engineering non-classical states in the ions will allow for quantum enhanced measurements of the combined atom-ion system, with single atom and single collision resolution. State-dependence in the atom-ion interactions can be employed to engineer quantum potentials for the atoms, leading to large scale ion-atomic Schrödinger cat-type entanglement.
Max ERC Funding
1 490 152 €
Duration
Start date: 2013-12-01, End date: 2018-11-30
Project acronym I-SURF
Project Inorganic surfactants with multifunctional heads
Researcher (PI) Sebastian Polarz
Host Institution (HI) UNIVERSITAT KONSTANZ
Call Details Consolidator Grant (CoG), PE5, ERC-2013-CoG
Summary "Surfactants are molecules of enormous scientific and technological importance, which are widely used as detergents, emulsifiers or for the preparation of diverse nanostructures. Fascinating abilities regarding the formation of self-organized structures, like micelles or liquid crystals, originate from their amphiphilic architecture, which comprises a polar head group linked to a hydrophobic chain. While almost all known surfactants are organic, a new family of surfactants is now emerging, which combine amphiphilic properties with the advanced functionality of transition metal building blocks. The current project aims at the synthesis of unique inorganic surfactants (I-SURFs), which contain multinuclear, charged metal-oxo entities as heads, and their exploration with regard to additional redox, catalytic or magnetic functionalities. A particular challenge is the creation of smart surfactant systems that can be controlled via external stimuli. While thermotropic liquid crystals and their adjustment in electric fields (enabling LCDs) have been studied in depth, very limited research concerns the control of self-assembled amphiphilic structures by use of magnetic fields. It is obvious that exposure to a magnetic field has inherent advantages over electric fields for controlling structures in water. I-SURFs with single-molecule magnets as heads will be thus prepared and studied. Another groundbreaking task is the creation of I-SURFs with additional catalytic activities. Since catalytic heads can be positioned via self-organization, for instance on the surface of micellar aggregates, catalytic relay systems can be assembled with a second catalytic species in proximity to the first. Thus, cooperative effects in catalytic tandem reactions will ultimately be observed. These examples show that frontier research on I-SURFs is of outstanding relevance for supramolecular science and will certainly pave the way toward new technological applications with great benefits to society."
Summary
"Surfactants are molecules of enormous scientific and technological importance, which are widely used as detergents, emulsifiers or for the preparation of diverse nanostructures. Fascinating abilities regarding the formation of self-organized structures, like micelles or liquid crystals, originate from their amphiphilic architecture, which comprises a polar head group linked to a hydrophobic chain. While almost all known surfactants are organic, a new family of surfactants is now emerging, which combine amphiphilic properties with the advanced functionality of transition metal building blocks. The current project aims at the synthesis of unique inorganic surfactants (I-SURFs), which contain multinuclear, charged metal-oxo entities as heads, and their exploration with regard to additional redox, catalytic or magnetic functionalities. A particular challenge is the creation of smart surfactant systems that can be controlled via external stimuli. While thermotropic liquid crystals and their adjustment in electric fields (enabling LCDs) have been studied in depth, very limited research concerns the control of self-assembled amphiphilic structures by use of magnetic fields. It is obvious that exposure to a magnetic field has inherent advantages over electric fields for controlling structures in water. I-SURFs with single-molecule magnets as heads will be thus prepared and studied. Another groundbreaking task is the creation of I-SURFs with additional catalytic activities. Since catalytic heads can be positioned via self-organization, for instance on the surface of micellar aggregates, catalytic relay systems can be assembled with a second catalytic species in proximity to the first. Thus, cooperative effects in catalytic tandem reactions will ultimately be observed. These examples show that frontier research on I-SURFs is of outstanding relevance for supramolecular science and will certainly pave the way toward new technological applications with great benefits to society."
Max ERC Funding
1 863 546 €
Duration
Start date: 2014-03-01, End date: 2019-02-28
Project acronym IBDlipids
Project Lipid antigens in intestinal inflammation and tumor development
Researcher (PI) Sebastian Zeißig
Host Institution (HI) TECHNISCHE UNIVERSITAET DRESDEN
Call Details Starting Grant (StG), LS6, ERC-2013-StG
Summary Lipids play crucial roles in metabolism, immunity and cancer. In addition to their function as inflammatory mediators, lipids serve as antigens presented by CD1d and activate a subset of T cells called natural killer T (NKT) cells. While NKT cells are critical for human immunity, their uncontrolled activation contributes to inflammatory bowel disease (IBD), a group of diseases characterized by chronic intestinal inflammation and an increased risk of colorectal cancer (CRC). Specifically, NKT cells are the major source of pathogenic TH2 cytokines in the inflammatory bowel disease ulcerative colitis (UC), are sufficient to cause intestinal inflammation in mice, and are required for colitis and colitis-associated cancer in a mouse model of UC. These observations suggest that targeting of lipid antigen presentation may be of therapeutic value in IBD, where current therapies are of limited efficacy and aim at control rather than cure of disease.
Here, I propose to identify the lipid antigens responsible for NKT cell-mediated intestinal inflammation and colitis-associated cancer in human IBD and mouse models of intestinal inflammation and to develop therapeutic strategies for interference with pathogenic lipid antigen presentation. Specifically, I propose to characterize the intestinal inflammation- and cancer-associated CD1d lipidome based on novel in vitro and in vivo models of cleavable CD1d and a recently established lipidomics approach. Furthermore, I propose to develop strategies for inhibition of the generation, loading and presentation of inflammation- and cancer-associated lipid antigens. These studies combine biochemical, immunological and high-throughput technologies in an interdisciplinary manner to provide the knowledge required for the generation of novel, efficacious therapies for the treatment of IBD. These studies will have major implications for IBD and other inflammatory, infectious, and neoplastic diseases at mucosal barriers.
Summary
Lipids play crucial roles in metabolism, immunity and cancer. In addition to their function as inflammatory mediators, lipids serve as antigens presented by CD1d and activate a subset of T cells called natural killer T (NKT) cells. While NKT cells are critical for human immunity, their uncontrolled activation contributes to inflammatory bowel disease (IBD), a group of diseases characterized by chronic intestinal inflammation and an increased risk of colorectal cancer (CRC). Specifically, NKT cells are the major source of pathogenic TH2 cytokines in the inflammatory bowel disease ulcerative colitis (UC), are sufficient to cause intestinal inflammation in mice, and are required for colitis and colitis-associated cancer in a mouse model of UC. These observations suggest that targeting of lipid antigen presentation may be of therapeutic value in IBD, where current therapies are of limited efficacy and aim at control rather than cure of disease.
Here, I propose to identify the lipid antigens responsible for NKT cell-mediated intestinal inflammation and colitis-associated cancer in human IBD and mouse models of intestinal inflammation and to develop therapeutic strategies for interference with pathogenic lipid antigen presentation. Specifically, I propose to characterize the intestinal inflammation- and cancer-associated CD1d lipidome based on novel in vitro and in vivo models of cleavable CD1d and a recently established lipidomics approach. Furthermore, I propose to develop strategies for inhibition of the generation, loading and presentation of inflammation- and cancer-associated lipid antigens. These studies combine biochemical, immunological and high-throughput technologies in an interdisciplinary manner to provide the knowledge required for the generation of novel, efficacious therapies for the treatment of IBD. These studies will have major implications for IBD and other inflammatory, infectious, and neoplastic diseases at mucosal barriers.
Max ERC Funding
1 500 000 €
Duration
Start date: 2014-01-01, End date: 2018-12-31
Project acronym ICANSENSE
Project Ion ChaNnel SENSors
Researcher (PI) Armagan KOCER
Host Institution (HI) ACADEMISCH ZIEKENHUIS GRONINGEN
Call Details Proof of Concept (PoC), PC1, ERC-2013-PoC
Summary Super-sensitive detection mechanisms offer numerous opportunities for fundamental science in fields such as biophysics and chemistry and are a highly needed advancement for applied fields such as medicine, environmental pollution monitoring and defence. Developing sensors that are even capable of detecting single molecules has therefore become an important field of research. At this moment there is a growing demand for a stable and sensitive molecular sensing method because the available sensing methods are insufficient.
Dr. Kocer and her group have developed a sensory device based on biological ion channels. Ion channels are extremely sensitive transmembrane protein pores that open and close in response to chemical, electrical or mechanical stimuli. Dr. Kocer has built unique knowledge and expertise on the channel functioning that allows her to modify the sensory characteristics of these channels towards the detection of a certain analyte. Via a unique fabrication method a sensory chip has been constructed where ion channels can be reconstituted into an artificial bilayer lipid membrane. This has led to the development of a molecular sensing platform able to detect a large variety of analytes at the single molecule level.
To maximise the full potential of the ion channels, we will explore in which fields a molecular platform can fulfil major unmet needs and develop a reliable molecular sensing platform. To achieve these goals, we will conduct market research, develop a sound commercialisation strategy, IPR strategy and a product development plan within the ERC PoC project. The project outcomes will be consolidated in a business plan and presented to investors including venture capitalists and other strategic partners.
Summary
Super-sensitive detection mechanisms offer numerous opportunities for fundamental science in fields such as biophysics and chemistry and are a highly needed advancement for applied fields such as medicine, environmental pollution monitoring and defence. Developing sensors that are even capable of detecting single molecules has therefore become an important field of research. At this moment there is a growing demand for a stable and sensitive molecular sensing method because the available sensing methods are insufficient.
Dr. Kocer and her group have developed a sensory device based on biological ion channels. Ion channels are extremely sensitive transmembrane protein pores that open and close in response to chemical, electrical or mechanical stimuli. Dr. Kocer has built unique knowledge and expertise on the channel functioning that allows her to modify the sensory characteristics of these channels towards the detection of a certain analyte. Via a unique fabrication method a sensory chip has been constructed where ion channels can be reconstituted into an artificial bilayer lipid membrane. This has led to the development of a molecular sensing platform able to detect a large variety of analytes at the single molecule level.
To maximise the full potential of the ion channels, we will explore in which fields a molecular platform can fulfil major unmet needs and develop a reliable molecular sensing platform. To achieve these goals, we will conduct market research, develop a sound commercialisation strategy, IPR strategy and a product development plan within the ERC PoC project. The project outcomes will be consolidated in a business plan and presented to investors including venture capitalists and other strategic partners.
Max ERC Funding
149 835 €
Duration
Start date: 2014-04-01, End date: 2015-03-31
Project acronym ICON
Project Integrated Real-time Feedback Control and post-processing for image Restoration
Researcher (PI) Michel Herman G Verhaegen
Host Institution (HI) TECHNISCHE UNIVERSITEIT DELFT
Call Details Advanced Grant (AdG), PE7, ERC-2013-ADG
Summary My goal is to develop new computational tools for image restoration by real-time feedback control with full images recorded by a CCD camera. iCON will enable to breakaway from the existing quasi-static Adaptive Optics (AO) or off-line phase diversity approaches. The improvements over these existing image restoration methods are a consequence of three innovative steps taken in this project. The first is the modelling through system identification of the coupled dynamics between the temporal and spatial varying dynamics of the wavefront aberrations that blur the images. New multidimensional distributed Subspace Identification methods will be developed to derive mathematical models that predict the coupled dynamics of the total imaging plant. The use of subspace identification will enable to extract accurate prediction models since no a priori model parameterization is needed, since no use is made of nonlinear parameter optimization and since use can be made of closed-loop data. The accurate predictions are used in the real-time feedback controller to correct the aberrations when they actually occur. The second is the enabled use of the CCD image recording for both identification and real-time control. This sensor provides much more detailed information on the wavefront aberration and the object compared to classically used AO pupil wavefront sensors, e.g. a Shack-Hartmann. The third is the coupling between real-time image restoration and post-processing whereby the real-time feedback provides accurate prior information for the complicated nonlinear optimization in post-processing. The new iCON methodology will enable to consider spatio-temporal feedback on the total imaging plant from the onset of the instrument design cycle. This will lead to finding a better balance between imaging resolution on one hand and size, cost and complexity on the other. Therefore iCON will be a key enabling technology for developing low cost high resolution imaging instruments.
Summary
My goal is to develop new computational tools for image restoration by real-time feedback control with full images recorded by a CCD camera. iCON will enable to breakaway from the existing quasi-static Adaptive Optics (AO) or off-line phase diversity approaches. The improvements over these existing image restoration methods are a consequence of three innovative steps taken in this project. The first is the modelling through system identification of the coupled dynamics between the temporal and spatial varying dynamics of the wavefront aberrations that blur the images. New multidimensional distributed Subspace Identification methods will be developed to derive mathematical models that predict the coupled dynamics of the total imaging plant. The use of subspace identification will enable to extract accurate prediction models since no a priori model parameterization is needed, since no use is made of nonlinear parameter optimization and since use can be made of closed-loop data. The accurate predictions are used in the real-time feedback controller to correct the aberrations when they actually occur. The second is the enabled use of the CCD image recording for both identification and real-time control. This sensor provides much more detailed information on the wavefront aberration and the object compared to classically used AO pupil wavefront sensors, e.g. a Shack-Hartmann. The third is the coupling between real-time image restoration and post-processing whereby the real-time feedback provides accurate prior information for the complicated nonlinear optimization in post-processing. The new iCON methodology will enable to consider spatio-temporal feedback on the total imaging plant from the onset of the instrument design cycle. This will lead to finding a better balance between imaging resolution on one hand and size, cost and complexity on the other. Therefore iCON will be a key enabling technology for developing low cost high resolution imaging instruments.
Max ERC Funding
2 499 358 €
Duration
Start date: 2014-02-01, End date: 2019-01-31
Project acronym IHEARU
Project Intelligent systems' Holistic Evolving Analysis of Real-life Universal speaker characteristics
Researcher (PI) Bjoern Wolfgang Schuller
Host Institution (HI) UNIVERSITAT PASSAU
Call Details Starting Grant (StG), PE6, ERC-2013-StG
Summary "Recently, automatic speech and speaker recognition has matured to the degree that it entered the daily lives of thousands of Europe's citizens, e.g., on their smart phones or in call services. During the next years, speech processing technology will move to a new level of social awareness to make interaction more intuitive, speech retrieval more efficient, and lend additional competence to computer-mediated communication and speech-analysis services in the commercial, health, security, and further sectors. To reach this goal, rich speaker traits and states such as age, height, personality and physical and mental state as carried by the tone of the voice and the spoken words must be reliably identified by machines. In the iHEARu project, ground-breaking methodology including novel techniques for multi-task and semi-supervised learning will deliver for the first time intelligent holistic and evolving analysis in real-life condition of universal speaker characteristics which have been considered only in isolation so far. Today's sparseness of annotated realistic speech data will be overcome by large-scale speech and meta-data mining from public sources such as social media, crowd-sourcing for labelling and quality control, and shared semi-automatic annotation. All stages from pre-processing and feature extraction, to the statistical modelling will evolve in ""life-long learning"" according to new data, by utilising feedback, deep, and evolutionary learning methods. Human-in-the-loop system validation and novel perception studies will analyse the self-organising systems and the relation of automatic signal processing to human interpretation in a previously unseen variety of speaker classification tasks. The project's work plan gives the unique opportunity to transfer current world-leading expertise in this field into a new de-facto standard of speaker characterisation methods and open-source tools ready for tomorrow's challenge of socially aware speech analysis."
Summary
"Recently, automatic speech and speaker recognition has matured to the degree that it entered the daily lives of thousands of Europe's citizens, e.g., on their smart phones or in call services. During the next years, speech processing technology will move to a new level of social awareness to make interaction more intuitive, speech retrieval more efficient, and lend additional competence to computer-mediated communication and speech-analysis services in the commercial, health, security, and further sectors. To reach this goal, rich speaker traits and states such as age, height, personality and physical and mental state as carried by the tone of the voice and the spoken words must be reliably identified by machines. In the iHEARu project, ground-breaking methodology including novel techniques for multi-task and semi-supervised learning will deliver for the first time intelligent holistic and evolving analysis in real-life condition of universal speaker characteristics which have been considered only in isolation so far. Today's sparseness of annotated realistic speech data will be overcome by large-scale speech and meta-data mining from public sources such as social media, crowd-sourcing for labelling and quality control, and shared semi-automatic annotation. All stages from pre-processing and feature extraction, to the statistical modelling will evolve in ""life-long learning"" according to new data, by utilising feedback, deep, and evolutionary learning methods. Human-in-the-loop system validation and novel perception studies will analyse the self-organising systems and the relation of automatic signal processing to human interpretation in a previously unseen variety of speaker classification tasks. The project's work plan gives the unique opportunity to transfer current world-leading expertise in this field into a new de-facto standard of speaker characterisation methods and open-source tools ready for tomorrow's challenge of socially aware speech analysis."
Max ERC Funding
1 498 200 €
Duration
Start date: 2014-01-01, End date: 2018-12-31
Project acronym IIP
Project Individualized Implant Placement
Researcher (PI) Bodo ROSENHAHN
Host Institution (HI) GOTTFRIED WILHELM LEIBNIZ UNIVERSITAET HANNOVER
Call Details Proof of Concept (PoC), PC1, ERC-2013-PoC
Summary "The goal of the Proof of Concept (PoC) project is a licensing software (e.g. within a spin-off) that provides a framework to compute a suited (individualized) implant placement for patients: E.g. for hip or knee replacements, during an operation planning phase, a surgeon selects an implant and determines its placement and possible motion range. Since humans are highly individual, factors such as gender, age, height or weight, among many other parameters influence the implant type and placement. Indeed the implant placement is always sub-optimal as the decision is solely based on the surgeons experience. A wrong placement can reduce the quality of life of the patient after the operation. Our software will close this gap and provide surgeons with the required key-information to make a high accurate individualized surgery planning: Our method will exploit statistical information about human shape and motion to extract this information. The software needs to be fast and accurate and must allow to take into account semantic meta information about the patient, e.g. by exploiting information such as gender, weight, height, age, etc. Based on our knowledge from the ERC starting Grant Dynamic MinVIP, this can be done in a statistical setting by training a PCA-model and by linear regression on the semantic parameters. Whereas our concept focuses on knee and hip treatment, it should be emphasized, that the concept is very general and has similar applications for e.g. hearing aids, aesthetic surgeries (e.g. breast cancer or burn patients), face/limb reconstruction or for the design of other orthopaedic devices, such as thrombosis stockings. We further expect insights which will help surgeons and engineers for the design of implants, which again will be of major importance for a company."
Summary
"The goal of the Proof of Concept (PoC) project is a licensing software (e.g. within a spin-off) that provides a framework to compute a suited (individualized) implant placement for patients: E.g. for hip or knee replacements, during an operation planning phase, a surgeon selects an implant and determines its placement and possible motion range. Since humans are highly individual, factors such as gender, age, height or weight, among many other parameters influence the implant type and placement. Indeed the implant placement is always sub-optimal as the decision is solely based on the surgeons experience. A wrong placement can reduce the quality of life of the patient after the operation. Our software will close this gap and provide surgeons with the required key-information to make a high accurate individualized surgery planning: Our method will exploit statistical information about human shape and motion to extract this information. The software needs to be fast and accurate and must allow to take into account semantic meta information about the patient, e.g. by exploiting information such as gender, weight, height, age, etc. Based on our knowledge from the ERC starting Grant Dynamic MinVIP, this can be done in a statistical setting by training a PCA-model and by linear regression on the semantic parameters. Whereas our concept focuses on knee and hip treatment, it should be emphasized, that the concept is very general and has similar applications for e.g. hearing aids, aesthetic surgeries (e.g. breast cancer or burn patients), face/limb reconstruction or for the design of other orthopaedic devices, such as thrombosis stockings. We further expect insights which will help surgeons and engineers for the design of implants, which again will be of major importance for a company."
Max ERC Funding
150 000 €
Duration
Start date: 2014-01-01, End date: 2014-12-31
Project acronym IL-22 AND IL-22BP
Project Identifying the immune and microbial network controlling the IL-22 – IL-22bp axis to open the doors for targeted therapies
Researcher (PI) Samuel Huber
Host Institution (HI) UNIVERSITAETSKLINIKUM HAMBURG-EPPENDORF
Call Details Starting Grant (StG), LS6, ERC-2013-StG
Summary Chronic mucosal inflammation and tissue damage predisposes patients to the development of colorectal cancer. One hypothesis is that the same factors important for wound healing, if left unchecked, also promote tumorigenesis. Tight control by a sensor of tissue damage should induce these factors to promote tissue repair, while limiting their activity to prevent development of cancer.
IL-22, a prototypical tissue repair factor, plays an important role in a wide variety of intestinal disease including infection, wound healing, colitis, and cancer. Indeed, IL-22 has protective and detrimental effects dependent on the milieu and disease suggesting that proper regulation is required. IL-22 expression is directly regulated, additionally a soluble IL-22 receptor (IL-22 binding protein; IL-22bp), can bind and neutralize IL-22. We reported recently that sensing of intestinal tissue damage and components of the microbiota via the NLRP3 or NLRP6 inflammasomes led to a down regulation of IL-22bp, thereby increasing bioavailability of IL-22. IL-22, which is induced during intestinal tissue damage, exerted protective properties during the peak of damage, but promoted tumor development if not controlled by IL-22bp during the recovery phase.
Accordingly a spatial and temporal regulation of IL-22 is crucial. Hence, global administration or blockade of IL-22 is unlikely to be therapeutically beneficial. We are using several newly generated conditional knock-out (cCasp1-/-, cIL-18R-/-, cIL-18-/-, cIL-22R1-/-), knock-in (IL-22 BFP), and gnotobiotic mice, aiming to analyze the cellular and microbial network regulating the IL-22 – IL-22bp axis at a resolution previously unfeasible. Our results will provide novel insights into the network between microflora, epithelium, and immune system regulating tissue regeneration and tumor development, and can lead to therapies for potentially a wide variety of intestinal diseases, such as infection, colon cancer, IBD, or wound healing.
Summary
Chronic mucosal inflammation and tissue damage predisposes patients to the development of colorectal cancer. One hypothesis is that the same factors important for wound healing, if left unchecked, also promote tumorigenesis. Tight control by a sensor of tissue damage should induce these factors to promote tissue repair, while limiting their activity to prevent development of cancer.
IL-22, a prototypical tissue repair factor, plays an important role in a wide variety of intestinal disease including infection, wound healing, colitis, and cancer. Indeed, IL-22 has protective and detrimental effects dependent on the milieu and disease suggesting that proper regulation is required. IL-22 expression is directly regulated, additionally a soluble IL-22 receptor (IL-22 binding protein; IL-22bp), can bind and neutralize IL-22. We reported recently that sensing of intestinal tissue damage and components of the microbiota via the NLRP3 or NLRP6 inflammasomes led to a down regulation of IL-22bp, thereby increasing bioavailability of IL-22. IL-22, which is induced during intestinal tissue damage, exerted protective properties during the peak of damage, but promoted tumor development if not controlled by IL-22bp during the recovery phase.
Accordingly a spatial and temporal regulation of IL-22 is crucial. Hence, global administration or blockade of IL-22 is unlikely to be therapeutically beneficial. We are using several newly generated conditional knock-out (cCasp1-/-, cIL-18R-/-, cIL-18-/-, cIL-22R1-/-), knock-in (IL-22 BFP), and gnotobiotic mice, aiming to analyze the cellular and microbial network regulating the IL-22 – IL-22bp axis at a resolution previously unfeasible. Our results will provide novel insights into the network between microflora, epithelium, and immune system regulating tissue regeneration and tumor development, and can lead to therapies for potentially a wide variety of intestinal diseases, such as infection, colon cancer, IBD, or wound healing.
Max ERC Funding
1 498 392 €
Duration
Start date: 2014-01-01, End date: 2018-12-31
Project acronym IMMUNEMESIS
Project The Plant Immune System: Epistasis and Fitness-Tradeoffs
Researcher (PI) Detlef Weigel
Host Institution (HI) MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV
Call Details Advanced Grant (AdG), LS2, ERC-2013-ADG
Summary A fundamental question in biology is how multicellular organisms distinguish self and non-self. The requirement to specifically recognize only foreign cells and molecules constrains the diversification of the immune system, resulting in conflicts between effective detection of enemies, adaptive changes in the cellular machinery and mating with divergent genotypes from the same species. In plants, there is generally a trade-off between immunity and growth, and immune system activation is often associated with impaired development. There are many examples of autoimmunity in hybrids, caused by a gene product from one parent erroneously interpreting a gene product from the other parent as foreign. This is not surprising, given the extraordinary diversity of many immune genes. On the other hand, hybrid vigor, or heterosis, is commonly observed in F1 progeny from two inbred parents, and this is widely exploited in breeding. Thus, it is also of practical importance to understand how outcrossing affects the plant immune system. We hypothesize that overt hybrid autoimmunity represents only the tip of the iceberg, and that there are many more subtle non-additive genetic interactions that affect both the plant immune system and growth. We therefore propose a comprehensive research program to dissect epistatic interactions with effects on plant growth and health. Specifically, we will conduct genomics-enabled, systematic forward genetic studies with natural genotypes of the model plant Arabidopsis thaliana and its outcrossing sister species A. lyrata. This will be complemented by experiments that will link diversity of microbial communities with that of the immune system in natural plant populations. The systematic understanding of forces that shape the distribution of immune gene alleles in the wild will have important implications for engineering disease resistance in crops, by helping to chose the best ensembles of resistance genes.
Summary
A fundamental question in biology is how multicellular organisms distinguish self and non-self. The requirement to specifically recognize only foreign cells and molecules constrains the diversification of the immune system, resulting in conflicts between effective detection of enemies, adaptive changes in the cellular machinery and mating with divergent genotypes from the same species. In plants, there is generally a trade-off between immunity and growth, and immune system activation is often associated with impaired development. There are many examples of autoimmunity in hybrids, caused by a gene product from one parent erroneously interpreting a gene product from the other parent as foreign. This is not surprising, given the extraordinary diversity of many immune genes. On the other hand, hybrid vigor, or heterosis, is commonly observed in F1 progeny from two inbred parents, and this is widely exploited in breeding. Thus, it is also of practical importance to understand how outcrossing affects the plant immune system. We hypothesize that overt hybrid autoimmunity represents only the tip of the iceberg, and that there are many more subtle non-additive genetic interactions that affect both the plant immune system and growth. We therefore propose a comprehensive research program to dissect epistatic interactions with effects on plant growth and health. Specifically, we will conduct genomics-enabled, systematic forward genetic studies with natural genotypes of the model plant Arabidopsis thaliana and its outcrossing sister species A. lyrata. This will be complemented by experiments that will link diversity of microbial communities with that of the immune system in natural plant populations. The systematic understanding of forces that shape the distribution of immune gene alleles in the wild will have important implications for engineering disease resistance in crops, by helping to chose the best ensembles of resistance genes.
Max ERC Funding
2 499 900 €
Duration
Start date: 2014-03-01, End date: 2019-02-28
Project acronym IMPACT
Project imPACT – Privacy, Accountability, Compliance, and Trust
in Tomorrow’s Internet
Researcher (PI) Peter Druschel
Host Institution (HI) UNIVERSITAT DES SAARLANDES
Call Details Synergy Grants (SyG), SYG6, ERC-2013-SyG
Summary The Internet has evolved from a mere communication network used by tens of millions of users two
decades ago, to a global multimedia platform for communication, social networking, entertainment,
education, trade and political activism used by more than two billion users. This transformation has
brought tremendous benefits to society, but has also created entirely new threats to privacy, safety,
law enforcement, freedom of information and freedom of speech. In today’s Internet, principals are
amorphous, identities can be fluid, users participate and exchange information as peers, and data is
processed on global third-party platforms. Existing models and techniques for security and privacy,
which assume trusted infrastructure and well-defined policies, principals and roles, fail to fully address
this challenge.
The imPACT project addresses the challenge of providing privacy, accountability, compliance and
trust (PACT) in tomorrow’s Internet, using a cross-disciplinary and synergistic approach to understanding
and mastering the different roles, interactions and relationships of users and their joint effect on
the four PACT properties. The focus is on principles and methodologies that are relevant to the needs
of individual Internet users, have a strong potential to lead to practical solutions and address the fundamental
long-term needs of the future Internet. We take on this challenge with a team of researchers
from relevant subdisciplines within computer science, and with input from outside experts in law,
social sciences, economics and business. The team of PIs consists of international leaders in privacy
and security, experimental distributed systems, formal methods, program analysis and verification, and
database systems. By teaming up and committing ourselves to this joint research, we are in a unique
position to meet the grand challenge of unifying the PACT properties and laying a new foundation for
their holistic treatment.
Summary
The Internet has evolved from a mere communication network used by tens of millions of users two
decades ago, to a global multimedia platform for communication, social networking, entertainment,
education, trade and political activism used by more than two billion users. This transformation has
brought tremendous benefits to society, but has also created entirely new threats to privacy, safety,
law enforcement, freedom of information and freedom of speech. In today’s Internet, principals are
amorphous, identities can be fluid, users participate and exchange information as peers, and data is
processed on global third-party platforms. Existing models and techniques for security and privacy,
which assume trusted infrastructure and well-defined policies, principals and roles, fail to fully address
this challenge.
The imPACT project addresses the challenge of providing privacy, accountability, compliance and
trust (PACT) in tomorrow’s Internet, using a cross-disciplinary and synergistic approach to understanding
and mastering the different roles, interactions and relationships of users and their joint effect on
the four PACT properties. The focus is on principles and methodologies that are relevant to the needs
of individual Internet users, have a strong potential to lead to practical solutions and address the fundamental
long-term needs of the future Internet. We take on this challenge with a team of researchers
from relevant subdisciplines within computer science, and with input from outside experts in law,
social sciences, economics and business. The team of PIs consists of international leaders in privacy
and security, experimental distributed systems, formal methods, program analysis and verification, and
database systems. By teaming up and committing ourselves to this joint research, we are in a unique
position to meet the grand challenge of unifying the PACT properties and laying a new foundation for
their holistic treatment.
Max ERC Funding
9 257 000 €
Duration
Start date: 2015-02-01, End date: 2021-01-31
Project acronym INDIVUHEART
Project Individualized early risk assessment for heart diseases
Researcher (PI) Thomas Hans Eschenhagen
Host Institution (HI) UNIVERSITAETSKLINIKUM HAMBURG-EPPENDORF
Call Details Advanced Grant (AdG), LS7, ERC-2013-ADG
Summary Heart failure (HF) is the common end-stage of different medical conditions. It is the only growing cardiovascular disease and its prognosis remains worse than that of many malignancies. The lack of evidence-based treatment for patients with diastolic HF (HFpEF) exemplifies that the current “one for all” therapy has to be advanced by an individualized approach. Inherited cardiomyopathies can serve as paradigmatic examples of different HF pathogenesis. Both gain- and loss-of-function mutations of the same gene cause disease, calling for disease-specific agonism or antagonism of this gene´s function. However, mutations alone do not predict the severity of cardiomyopathies nor therapy, because their impact on cardiac myocyte function is modified by numerous factors, including the genetic context. Today, patient-specific cardiac myocytes can be evaluated by the induced pluripotent stem cell (hiPSC) technology. Yet, unfolding the true potential of this technology requires robust, quantitative, high content assays. Our recently developed method to generate 3D-engineered heart tissue (EHT) from hiPSC provide an automated, high content analysis of heart muscle function and the response to stressors in the dish. The aim of this project is to make the technology a clinically applicable test. Major steps are (i) in depths clinical phenotyping and genotyping of patients with cardiomyopathies or HFpEF, (ii) follow-up of the clinical course, (iii) generation of hiPSC lines (40 patients, 40 healthy controls), and (iv) quantitative assessment of hiPSC-EHT function under basal conditions and in response to pro-arrhythmic or cardio-active drugs and chronic afterload enhancement. The product of this study is an SOP-based assay with standard values for hiPSC-EHT function/stress responses from healthy volunteers and patients with different heart diseases. The project could change clinical practice and be a step towards individualized risk prediction and therapy of HF.
Summary
Heart failure (HF) is the common end-stage of different medical conditions. It is the only growing cardiovascular disease and its prognosis remains worse than that of many malignancies. The lack of evidence-based treatment for patients with diastolic HF (HFpEF) exemplifies that the current “one for all” therapy has to be advanced by an individualized approach. Inherited cardiomyopathies can serve as paradigmatic examples of different HF pathogenesis. Both gain- and loss-of-function mutations of the same gene cause disease, calling for disease-specific agonism or antagonism of this gene´s function. However, mutations alone do not predict the severity of cardiomyopathies nor therapy, because their impact on cardiac myocyte function is modified by numerous factors, including the genetic context. Today, patient-specific cardiac myocytes can be evaluated by the induced pluripotent stem cell (hiPSC) technology. Yet, unfolding the true potential of this technology requires robust, quantitative, high content assays. Our recently developed method to generate 3D-engineered heart tissue (EHT) from hiPSC provide an automated, high content analysis of heart muscle function and the response to stressors in the dish. The aim of this project is to make the technology a clinically applicable test. Major steps are (i) in depths clinical phenotyping and genotyping of patients with cardiomyopathies or HFpEF, (ii) follow-up of the clinical course, (iii) generation of hiPSC lines (40 patients, 40 healthy controls), and (iv) quantitative assessment of hiPSC-EHT function under basal conditions and in response to pro-arrhythmic or cardio-active drugs and chronic afterload enhancement. The product of this study is an SOP-based assay with standard values for hiPSC-EHT function/stress responses from healthy volunteers and patients with different heart diseases. The project could change clinical practice and be a step towards individualized risk prediction and therapy of HF.
Max ERC Funding
2 494 728 €
Duration
Start date: 2014-06-01, End date: 2019-05-31
Project acronym InflaMet
Project Mechanistic insights into the impact of tumor-associated neutrophils on metastatic breast cancer
Researcher (PI) Karina Elizabeth De Visser
Host Institution (HI) STICHTING HET NEDERLANDS KANKER INSTITUUT-ANTONI VAN LEEUWENHOEK ZIEKENHUIS
Call Details Consolidator Grant (CoG), LS6, ERC-2013-CoG
Summary Metastatic disease is still largely unexplored, poorly understood and incurable. Accumulating evidence indicates that cells and mediators of the immune system can facilitate metastasis. Neutrophil accumulation in cancer patients has been associated with metastasis formation. In mouse tumor models, neutrophils have been reported to be pro- or anti- metastatic, but the underlying mechanisms involved in either function remain largely elusive. This proposal outlines a research program aimed at resolving the pro-metastatic role of neutrophils in breast cancer, as our preliminary data indicate that neutrophils proactively mediate breast cancer metastasis. Using a state-of-the art spontaneous breast cancer metastasis mouse model, we will mechanistically study how neutrophils facilitate metastasis formation and how mammary tumors provoke the metastasis-facilitating function of neutrophils. Building upon my previous studies and our current data, we will focus on the unexplored crosstalk between the adaptive immune system and neutrophils in facilitating spontaneous metastatic disease. These crucial questions will be addressed by undertaking a multidisciplinary approach, involving sophisticated mouse models for metastatic breast cancer, RNA sequencing on tumor-associated neutrophil populations, state-of-the-art mouse engineering, intravital imaging and in vivo neutrophil manipulations. Moreover, we will validate our findings from the mouse metastasis model in human breast cancer samples. We will determine the metastasis predicting power of the identified murine pro-metastatic neutrophil-specific pathways by immunohistochemistry and multi-parameter immunofluorescence on breast cancer samples and blood of untreated patients of which clinical follow-up is available. Thus, we will identify novel molecular pathways that can be targeted to selectively inhibit the pro-metastatic activity of the immune system.
Summary
Metastatic disease is still largely unexplored, poorly understood and incurable. Accumulating evidence indicates that cells and mediators of the immune system can facilitate metastasis. Neutrophil accumulation in cancer patients has been associated with metastasis formation. In mouse tumor models, neutrophils have been reported to be pro- or anti- metastatic, but the underlying mechanisms involved in either function remain largely elusive. This proposal outlines a research program aimed at resolving the pro-metastatic role of neutrophils in breast cancer, as our preliminary data indicate that neutrophils proactively mediate breast cancer metastasis. Using a state-of-the art spontaneous breast cancer metastasis mouse model, we will mechanistically study how neutrophils facilitate metastasis formation and how mammary tumors provoke the metastasis-facilitating function of neutrophils. Building upon my previous studies and our current data, we will focus on the unexplored crosstalk between the adaptive immune system and neutrophils in facilitating spontaneous metastatic disease. These crucial questions will be addressed by undertaking a multidisciplinary approach, involving sophisticated mouse models for metastatic breast cancer, RNA sequencing on tumor-associated neutrophil populations, state-of-the-art mouse engineering, intravital imaging and in vivo neutrophil manipulations. Moreover, we will validate our findings from the mouse metastasis model in human breast cancer samples. We will determine the metastasis predicting power of the identified murine pro-metastatic neutrophil-specific pathways by immunohistochemistry and multi-parameter immunofluorescence on breast cancer samples and blood of untreated patients of which clinical follow-up is available. Thus, we will identify novel molecular pathways that can be targeted to selectively inhibit the pro-metastatic activity of the immune system.
Max ERC Funding
1 999 360 €
Duration
Start date: 2014-03-01, End date: 2019-02-28
Project acronym InflammAct
Project Activation and Regulation of the NLRP3 Inflammasome
Researcher (PI) Eicke Latz
Host Institution (HI) UNIVERSITAETSKLINIKUM BONN
Call Details Consolidator Grant (CoG), LS6, ERC-2013-CoG
Summary The innate immune system protects the host from infections, detects and repairs tissue damage and functions to maintain tissue homeostasis. Several families of signaling receptors can recognize microbial substances or altered host molecules and orchestrate a coordinated inflammatory response. Inflammasomes are signaling platforms that control proteolytic activation of highly proinflammatory cytokines of the IL-1β family and thus, are relevant for infection control and numerous inflammatory conditions. In addition to recognizing foreign signals, the NLRP3 inflammasome can sense sterile tissue damage and various endogenous danger signals that appear in many common chronic inflammatory conditions. NLRP3 can be triggered by material released from dying cells and aggregated or crystalline substances, and its activation has been implicated in the pathogenesis of prevalent diseases in Western societies, such as type 2 diabetes, COPD, atherosclerosis and Alzheimer’s disease. The NLRP3 inflammasome can be activated by diverse signals however, the molecular mechanisms leading to its activation remain poorly understood. Using chemical biology screens and proteomics analysis, we identified that NLRP3 activity is regulated by phosphorylation and ubiquitination. This project aims to identify the enzymes and signaling mechanisms leading to NLRP3 activation. In an integrated, multidisciplinary approach, we will employ chemical biology screening to identify novel targets that act to regulate NLRP3, and will describe the NLRP3 interactome in response to various triggers. Data obtained by these approaches will be analyzed by bioinformatics, and signaling mechanisms identified will be confirmed by RNA interference and gain-of-function studies. Utilizing a range of biochemical, biophysical and immunological techniques, we will determine the mechanisms by which the identified molecules can activate the NLRP3 inflammasome and assess their physiological relevance in models of inflammation.
Summary
The innate immune system protects the host from infections, detects and repairs tissue damage and functions to maintain tissue homeostasis. Several families of signaling receptors can recognize microbial substances or altered host molecules and orchestrate a coordinated inflammatory response. Inflammasomes are signaling platforms that control proteolytic activation of highly proinflammatory cytokines of the IL-1β family and thus, are relevant for infection control and numerous inflammatory conditions. In addition to recognizing foreign signals, the NLRP3 inflammasome can sense sterile tissue damage and various endogenous danger signals that appear in many common chronic inflammatory conditions. NLRP3 can be triggered by material released from dying cells and aggregated or crystalline substances, and its activation has been implicated in the pathogenesis of prevalent diseases in Western societies, such as type 2 diabetes, COPD, atherosclerosis and Alzheimer’s disease. The NLRP3 inflammasome can be activated by diverse signals however, the molecular mechanisms leading to its activation remain poorly understood. Using chemical biology screens and proteomics analysis, we identified that NLRP3 activity is regulated by phosphorylation and ubiquitination. This project aims to identify the enzymes and signaling mechanisms leading to NLRP3 activation. In an integrated, multidisciplinary approach, we will employ chemical biology screening to identify novel targets that act to regulate NLRP3, and will describe the NLRP3 interactome in response to various triggers. Data obtained by these approaches will be analyzed by bioinformatics, and signaling mechanisms identified will be confirmed by RNA interference and gain-of-function studies. Utilizing a range of biochemical, biophysical and immunological techniques, we will determine the mechanisms by which the identified molecules can activate the NLRP3 inflammasome and assess their physiological relevance in models of inflammation.
Max ERC Funding
1 995 906 €
Duration
Start date: 2014-07-01, End date: 2019-06-30