Project description
Contribution of DNA breaks to neuronal cell genetic heterogeneity
Neural progenitor cells undergo tens of thousands of divisions to generate the billions of human brain neurons. This replication stress can lead to recurrent DNA break clusters, creating somatic genomic diversity. The unbalanced genomic mosaicism in neural progenitor cells may result in brain cancer and neuropsychiatric disorders. The EU-funded BrainBreaks project aims to investigate whether cell-autonomous DNA lesions, acquired during progenitor cell division, contribute to the genetic heterogeneity in neuronal cells. The researchers will employ in vitro cell line-based tools, in vivo mouse models and cutting-edge multi-omics approaches to uncover the genomics mechanisms that will provide valuable new insights into neuropsychiatric disorders and tumour biology.
Objective
Neural progenitor cells undergo tens of thousands of cell divisions to generate the 80 billion neurons in a human brain. In neural progenitor cells, replication stress can lead to recurrent DNA break clusters (RDCs). Joining of two RDC breaks may introduce somatic genomic diversity. On the other hand, unbalanced genomic mosaicism in neural progenitor cells may lead to brain cancer and neuropsychiatric disorders. This proposal will test whether cell-autonomous DNA lesions that accumulate during rapid progenitor division contribute to the genetic heterogeneity found across neuronal cell populations.
Aim 1 will elucidate how replication stress drives recurrent break clusters in the neural progenitor cell genome. We will evaluate whether chromatin loop extrusion mechanistically contributes to breakage repairs, and thus helps shape genomic structure variations.
Aim 2 will quantify the extent and impact of tissue-specific recurrent break clusters in the embryonic brain. I will create a mouse model to identify DNA breaks in temporal and cell-type-specific manner across the entire population of neuronal progenitor cells.
Aim 3 will evaluate whether replicative stress drives the recurrent genomic alteration in the RDC-containing gene during embryonic neurogenesis. We will investigate one of the RDC-containing gene Neurexin 1, where deletion or truncation results in neurological disorders.
By combining a powerful in vitro cell line-based tool, versatile in vivo mouse models, and cutting-edge multi-omics approaches, we will uncover the mechanisms that are critical to the fields of genomics and developmental neuroscience and may also provide valuable new insights into neuropsychiatric disorders and tumor biology.
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 neurobiology
- natural sciences biological sciences genetics DNA
- medical and health sciences clinical medicine oncology
- natural sciences biological sciences genetics genomes
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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)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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.
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Call for proposal
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(opens in new window) ERC-2020-STG
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69120 Heidelberg
Germany
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