Genomic instability and endoreduplication triggered by RAD17 deletion

Cell cycle checkpoints are critical for genomic stability. Rad17, a component of the checkpoint clamp loader complex (Rad17/Rfc2-5), is required for the response to DNA damage and replication stress. To explore the role of Rad17 in the maintenance of genomic integrity, we established somatic conditi...

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Veröffentlicht in:Genes & development 2003-04, Vol.17 (8), p.965-970
Hauptverfasser: Wang, Xin, Zou, Lee, Zheng, Huyong, Wei, Qingyi, Elledge, Stephen J, Li, Lei
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container_end_page 970
container_issue 8
container_start_page 965
container_title Genes & development
container_volume 17
creator Wang, Xin
Zou, Lee
Zheng, Huyong
Wei, Qingyi
Elledge, Stephen J
Li, Lei
description Cell cycle checkpoints are critical for genomic stability. Rad17, a component of the checkpoint clamp loader complex (Rad17/Rfc2-5), is required for the response to DNA damage and replication stress. To explore the role of Rad17 in the maintenance of genomic integrity, we established somatic conditional alleles of RAD17 in human cells. We find that RAD17 is not only important for the Atr-mediated checkpoint but is also essential for cell viability. Cells lacking RAD17 exhibited acute chromosomal aberrations and underwent endoreduplication at a high rate. Therefore, RAD17 links the checkpoint to ploidy control and is essential for the maintenance of chromosomal stability.
doi_str_mv 10.1101/gad.1065103
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subjects Blotting, Southern
Blotting, Western
Cell Cycle - physiology
Cell Cycle Proteins - physiology
Cell Survival
Cells, Cultured
Chromosome Aberrations
Colon - pathology
DNA Damage
Epithelial Cells - pathology
Exodeoxyribonucleases
Gene Deletion
Gene Duplication
Humans
Integrases - metabolism
Karyotyping
Phosphoproteins - metabolism
Phosphorylation
Research Communication
Transfection
Viral Proteins - metabolism
title Genomic instability and endoreduplication triggered by RAD17 deletion
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