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Developmental and Genetic Analysis of DNA Double-Strand Break Repair

Obiettivo

The DNA within our cells is constantly being damaged by both environmental and endogenous agents; of the many forms of DNA damage, the DNA double-strand break (DSB) is considered to be most dangerous. Correct processing of DSBs is not only essential for maintaining genomic integrity but is also required in specific biological processes, such as meiotic recombination and V(D)J recombination, in which DNA breaks are deliberately generated. In animals, defects in the proper response to DSBs can thus have different outcomes: cancer predisposition, embryonic lethality, or compromised immunity. Many genes that play a role in the processing of DSBs have been identified over the past decades, mainly by cloning genes that are responsible for specific human genomic instability or immune deficiency syndromes, and by genetic approaches using unicellular eukaryotes and rodent cell lines. It is, however, evident that many components required in higher eukaryotes are not yet known and the identification of those will be a major challenge for future research. Here, we will for the first time systematically test all genes encoded by an animals genome directly for their involvement in the cellular response to DSB in both somatic and germline tissues: we will use our recently developed transgenic animal models (C. elegans) that visualizes repair of a single localized genomic DNA break in genome wide RNAi screenings to identify (and then characterize) the complement of genes that are required to keep our genome stable, and when mutated can predispose humans to cancer. In parallel, we will study the cellular response to single DNA breaks that are artificially generated during different stages of gametogenesis, as well as address the developmental consequences of DSB induction during the earliest stages of embryonic development – an almost completely unexplored area in the field of genome instability and DNA damage responses.

Invito a presentare proposte

ERC-2007-StG
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Meccanismo di finanziamento

ERC-SG - ERC Starting Grant

Istituzione ospitante

ACADEMISCH ZIEKENHUIS LEIDEN
Contributo UE
€ 1 022 269,55
Indirizzo
ALBINUSDREEF 2
2333 ZA Leiden
Paesi Bassi

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Regione
West-Nederland Zuid-Holland Agglomeratie Leiden en Bollenstreek
Tipo di attività
Higher or Secondary Education Establishments
Contatto amministrativo
Liesbeth Dorama (Ms.)
Ricercatore principale
Marcel Tijsterman (Dr.)
Collegamenti
Costo totale
Nessun dato

Beneficiari (2)