Pan-cancer analysis of non-oncogene addiction to DNA repair

Abstract Cancer cells usually depend on the aberrant function of one or few driver genes to initiate and promote their malignancy, an attribute known as oncogene addiction. However, cancer cells might become dependent on the normal cellular functions of certain genes that are not oncogenes but ensur...

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Autor principal:	Luis Bermúdez-Guzmán
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0f2665cd6d9046259223d3a03c0af7e3
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spelling	oai:doaj.org-article:0f2665cd6d9046259223d3a03c0af7e32021-12-05T12:15:53ZPan-cancer analysis of non-oncogene addiction to DNA repair10.1038/s41598-021-02773-32045-2322https://doaj.org/article/0f2665cd6d9046259223d3a03c0af7e32021-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02773-3https://doaj.org/toc/2045-2322Abstract Cancer cells usually depend on the aberrant function of one or few driver genes to initiate and promote their malignancy, an attribute known as oncogene addiction. However, cancer cells might become dependent on the normal cellular functions of certain genes that are not oncogenes but ensure cell survival (non-oncogene addiction). The downregulation or silencing of DNA repair genes and the consequent genetic and epigenetic instability is key to promote malignancy, but the activation of the DNA-damage response (DDR) has been shown to become a type of non-oncogene addiction that critically supports tumour survival. In the present study, a systematic evaluation of DNA repair addiction at the pan-cancer level was performed using data derived from The Cancer Dependency Map and The Cancer Genome Atlas (TCGA). From 241 DDR genes, 59 were identified as commonly essential in cancer cell lines. However, large differences were observed in terms of dependency scores in 423 cell lines and transcriptomic alterations across 18 cancer types. Among these 59 commonly essential genes, 14 genes were exclusively associated with better overall patient survival and 19 with worse overall survival. Notably, a specific molecular signature among the latter, characterized by DDR genes like UBE2T, RFC4, POLQ, BRIP1, and H2AFX showing the weakest dependency scores, but significant upregulation was strongly associated with worse survival. The present study supports the existence and importance of non-oncogenic addiction to DNA repair in cancer and may facilitate the identification of prognostic biomarkers and therapeutic opportunities.Luis Bermúdez-GuzmánNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Luis Bermúdez-Guzmán Pan-cancer analysis of non-oncogene addiction to DNA repair
description	Abstract Cancer cells usually depend on the aberrant function of one or few driver genes to initiate and promote their malignancy, an attribute known as oncogene addiction. However, cancer cells might become dependent on the normal cellular functions of certain genes that are not oncogenes but ensure cell survival (non-oncogene addiction). The downregulation or silencing of DNA repair genes and the consequent genetic and epigenetic instability is key to promote malignancy, but the activation of the DNA-damage response (DDR) has been shown to become a type of non-oncogene addiction that critically supports tumour survival. In the present study, a systematic evaluation of DNA repair addiction at the pan-cancer level was performed using data derived from The Cancer Dependency Map and The Cancer Genome Atlas (TCGA). From 241 DDR genes, 59 were identified as commonly essential in cancer cell lines. However, large differences were observed in terms of dependency scores in 423 cell lines and transcriptomic alterations across 18 cancer types. Among these 59 commonly essential genes, 14 genes were exclusively associated with better overall patient survival and 19 with worse overall survival. Notably, a specific molecular signature among the latter, characterized by DDR genes like UBE2T, RFC4, POLQ, BRIP1, and H2AFX showing the weakest dependency scores, but significant upregulation was strongly associated with worse survival. The present study supports the existence and importance of non-oncogenic addiction to DNA repair in cancer and may facilitate the identification of prognostic biomarkers and therapeutic opportunities.
format	article
author	Luis Bermúdez-Guzmán
author_facet	Luis Bermúdez-Guzmán
author_sort	Luis Bermúdez-Guzmán
title	Pan-cancer analysis of non-oncogene addiction to DNA repair
title_short	Pan-cancer analysis of non-oncogene addiction to DNA repair
title_full	Pan-cancer analysis of non-oncogene addiction to DNA repair
title_fullStr	Pan-cancer analysis of non-oncogene addiction to DNA repair
title_full_unstemmed	Pan-cancer analysis of non-oncogene addiction to DNA repair
title_sort	pan-cancer analysis of non-oncogene addiction to dna repair
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0f2665cd6d9046259223d3a03c0af7e3
work_keys_str_mv	AT luisbermudezguzman pancanceranalysisofnononcogeneaddictiontodnarepair
_version_	1718372057959366656

Pan-cancer analysis of non-oncogene addiction to DNA repair

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