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Non-homologous end-joining genes are not inactivated in human radiation-induced sarcomas with genomic instabilityLefevre, Sandrine H. ...Radiation-induced tumor/Sarcoma/Non-homologous end-joining/Genomic instability/Mutations. DNA double-strand break (DSB) repair pathways are implicated in the maintenance of genomic stability. However ... the alterations ofthese pathways, as may occur in human tumor cells with strong genomic instability, remain poorly characterized. We analyzed the loss of heterozygosity (LOH) and the presence of mutations for a series of genes implicated in DSB repair by non-homologous end-joining in five radiation-induced sarcomas devoid of both active Tp53 and Rb 1. LOH was recurrently observed for 8 of the 9 studied genes (KU70, KU80, XRCC4, LIG4, Artemis, MRE11, RAD50, NBS1) but not for DNA-PKcs. No mutation was found in the remaining allele of the genes with LOH and the mRNA expression did not correlate with the allelic status. Our findings suggest that non-homologous end-joining repair pathway alteration is unlikely to be involved in the high genomic instability observed in these tumors.Vir: Journal of radiation research. - ISSN 0449-3060 (Letn. 46, št. 2, 2005, str. 223-231)Vrsta gradiva - članek, sestavni delLeto - 2005Jezik - angleškiCOBISS.SI-ID - 19882969
Avtor
Lefevre, Sandrine H. |
Coquelle, Arnaud |
Gonin-Laurent, Nathalie |
Cör, Andrej
Teme
Neoplasms, Radiation-Induced |
Genetics |
Sarcoma |
Genetics |
Gene Expression Regulation, Neoplastic |
Dna Damage |
Genetics |
Tumor Cells, Cultured |
Variation (Genetics) |
Dna Mutational Analysis |
DNA, pošdkoba |
Gensko izražanje, regulacija neoplazemska |
Novotvorbe povzročene z obsevanjem |
Sarkom |
DNA mutacijska analiza |
Tumorske celične kulture |
Variabilnost (genetika)
Vnos na polico
Trajna povezava
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Lefevre, Sandrine H. | |
Coquelle, Arnaud | |
Gonin-Laurent, Nathalie | |
Cör, Andrej | 11308 |
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