Modelling mutational landscapes of human cancers in vitro.

Abstract:

:Experimental models that recapitulate mutational landscapes of human cancers are needed to decipher the rapidly expanding data on human somatic mutations. We demonstrate that mutation patterns in immortalised cell lines derived from primary murine embryonic fibroblasts (MEFs) exposed in vitro to carcinogens recapitulate key features of mutational signatures observed in human cancers. In experiments with several cancer-causing agents we obtained high genome-wide concordance between human tumour mutation data and in vitro data with respect to predominant substitution types, strand bias and sequence context. Moreover, we found signature mutations in well-studied human cancer driver genes. To explore endogenous mutagenesis, we used MEFs ectopically expressing activation-induced cytidine deaminase (AID) and observed an excess of AID signature mutations in immortalised cell lines compared to their non-transgenic counterparts. MEF immortalisation is thus a simple and powerful strategy for modelling cancer mutation landscapes that facilitates the interpretation of human tumour genome-wide sequencing data.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Olivier M,Weninger A,Ardin M,Huskova H,Castells X,Vallée MP,McKay J,Nedelko T,Muehlbauer KR,Marusawa H,Alexander J,Hazelwood L,Byrnes G,Hollstein M,Zavadil J

doi

10.1038/srep04482

subject

Has Abstract

pub_date

2014-03-27 00:00:00

pages

4482

issn

2045-2322

pii

srep04482

journal_volume

4

pub_type

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