Al-Minawi, A. Z., Lee, Y. F., Hakansson, D. et al. (9 more authors) (2009) The ERCC1/XPF endonuclease is required for completion of homologous recombination at DNA replication forks stalled by inter-strand cross-links. Nucleic Acids Research, 37 (19). pp. 6400-6413. ISSN 0305-1048
Abstract
Both the ERCC1-XPF complex and the proteins involved in homoIogous recombination (HR) have critical roles in inter-strand cross-link (ICL) repair. Here, we report that mitomycin C-induced lesions inhibit replication fork elongation. Furthermore, mitomycin C-induced DNA double-strand breaks (DSBs) are the result of the collapse of ICL-stalled replication forks. These are not formed through replication run off, as we show that mitomycin C or cisplatin-induced DNA lesions are not incised by global genome nucleotide excision repair (GGR). We also suggest that ICL-lesion repair is initiated either by replication or transcription, as the GGR does not incise ICL-lesions. Furthermore, we report that RAD51 foci are induced by cisplatin or mitomycin C independently of ERCC1, but that mitomycin C-induced HR measured in a reporter construct is impaired in ERCC1-defective cells. These data suggest that ERCC1–XPF plays a role in completion of HR in ICL repair. We also find no additional sensitivity to cisplatin by siRNA co-depletion of XRCC3 and ERCC1, showing that the two proteins act on the same pathway to promote survival.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2009. Published by Oxford University Press. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | NUCLEOTIDE-EXCISION-REPAIR; CHINESE-HAMSTER CELLS; PIGMENTOSUM GROUP-F; MAMMALIAN-CELLS; MITOMYCIN-C; BREAK REPAIR; IN-VIVO; S-PHASE; ERCC1-XPF; SENSITIVITY |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Medicine, Dentistry and Health (Sheffield) > The Medical School (Sheffield) > Division of Genomic Medicine (Sheffield) > Department of Oncology and Metabolism (Sheffield) The University of Sheffield > Sheffield Teaching Hospitals |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 21 Nov 2016 17:01 |
Last Modified: | 21 Nov 2016 17:05 |
Published Version: | http://dx.doi.org/10.1093/nar/gkp705 |
Status: | Published |
Publisher: | Oxford University Press (OUP): Policy C - Option B |
Refereed: | Yes |
Identification Number: | 10.1093/nar/gkp705 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107901 |