Objective
DNA-protein cross-links (DPCs) are common DNA lesions caused by endogenous, environmental, and chemotherapeutic agents. Cells are susceptible to these lesions during S phase, as DPCs impede replication fork progression and are likely to induce genomic instability, a cause of cancer and aging. Despite its relevance to human health, the repair of DPCs is poorly understood. Research on DPC repair has mainly involved testing cellular responses to compounds such as formaldehyde, but these agents induce a wide variety of DNA lesions, and conflicting results have been reported. To overcome these obstacles, I have developed the first in vitro system that recapitulates replication-coupled DPC repair. In this system, a plasmid containing a site-specific DPC is replicated in Xenopus egg extracts. Using this approach, I demonstrated that DPC repair requires DNA replication. When a replication fork encounters a DPC, the DPC is degraded into a peptide-adduct, which allows replication bypass by translesion DNA synthesis. Importantly, these experiments identified a novel proteolytic pathway whose activity is regulated by replication.
This in vitro system now provides a powerful means to identify and characterize the different factors that participate in S phase DPC repair. I speculate that for DPC processing to occur, the protein-adduct must first be detected, then marked for degradation and ultimately degraded. Using a series of complementary strategies, which will take advantage of the in vitro system combined with proteome and genome wide approaches, I seek to uncover the different players that participate in each of these events. This project will enable a detailed mechanistic outlook of a complex multi-step reaction that has not been feasible to achieve using existing methodologies. It will also improve our understanding of how DPCs impact genomic stability and the consequences of not repairing these lesions for human health.
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: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
- medical and health sciences basic medicine pharmacology and pharmacy drug discovery
- natural sciences biological sciences biochemistry biomolecules proteins proteomics
- natural sciences chemical sciences organic chemistry aldehydes
- natural sciences biological sciences genetics DNA
- medical and health sciences clinical medicine oncology
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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)
MAIN PROGRAMME
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Topic(s)
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.
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.
Funding Scheme
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.
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-STG - Starting Grant
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2016-STG
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
1165 Kobenhavn
Denmark
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.