Project description
Plasma epigenomics as an extension of liquid biopsy technologies
Genomic DNA carries a multitude of post-translational modifications that reflect cells’ transcriptional states. Upon cell death, fragmented chromatin retaining histone modifications is released into circulation. The EU-funded cfChIP project aims to obtain plasma epigenomic information and translate it into medically relevant findings via liquid biopsy and chromatin immunoprecipitation of cell-free nucleosomes with chromatin marks followed by sequencing (cfChIP-seq). The previous study showed that cfChIP-seq provides multidimensional epigenetic information about the identity and the transcriptional state of the originating cells. The project will explore plasma samples from patients and donors in combination with probabilistic modelling to find correlations between tissue gene expressions and circulating chromatin profiles and how the immune system changes with disease progression and response to treatments.
Objective
Genomic DNA is packaged by histone proteins that carry a multitude of post-translational modifications, which reflect cellular transcriptional states. When cells die, fragmented chromatin retaining histone modifications is released to the circulation. Recently, we pioneered chromatin immunoprecipitation of cell-free nucleosomes carrying active chromatin marks followed by sequencing (cfChIP-seq). Our results show that cfChIP-seq provides multidimensional epigenetic information and that the plasma epigenome contains rich information about the identity and the transcriptional state of the originating cells.
Liquid biopsies already entered the clinical practice, yet current methodologies use them to assess genetic information. Our breakthrough methodology opens an unprecedented opportunity to delineate the transcriptional state of specific cell types and different pathologic states. Here we aim to translate plasma epigenomic information into medically relevant findings. The challenge is recovering the states of the cells represented in the circulation and relate these to pathological processes. Our working hypothesis is that this task is attainable by probabilistic modeling exploiting knowledge about epigenomics and transcription programs in health and disease. In this project we will assay plasma samples from multiple patient and donor cohorts to characterize the relation between tissue gene expression and circulating chromatin profiles, to recover the immune system status and chart how it changes with disease progression and response to treatment, and to monitor transplant patients for early detection of rejection.
Our extensive preliminary data, our expertise in probabilistic modeling and genomics and our collaborators’ access to relevant patient cohorts support the projects’ feasibility. Plasma epigenomics will open a new non-invasive window into tissue dynamics in living humans, beyond current liquid biopsy technologies, with far-reaching medical implications.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences biological sciences genetics DNA
- natural sciences biological sciences biochemistry biomolecules proteins
- natural sciences biological sciences genetics epigenetics
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
ERC-ADG - Advanced Grant
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Call for proposal
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91904 JERUSALEM
Israel
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