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Nat Commun DOI:10.1038/ncomms12160

The landscape of chromosomal aberrations in breast cancer mouse models reveals driver-specific routes to tumorigenesis.

Publication TypeJournal Article
Year of Publication2016
AuthorsBen-David, U, Ha, G, Khadka, P, Jin, X, Wong, B, Franke, L, Golub, TR
JournalNat Commun
Volume7
Pages12160
Date Published2016
ISSN2041-1723
Abstract

Aneuploidy and copy-number alterations (CNAs) are a hallmark of human cancer. Although genetically engineered mouse models (GEMMs) are commonly used to model human cancer, their chromosomal landscapes remain underexplored. Here we use gene expression profiles to infer CNAs in 3,108 samples from 45 mouse models, providing the first comprehensive catalogue of chromosomal aberrations in cancer GEMMs. Mining this resource, we find that most chromosomal aberrations accumulate late during breast tumorigenesis, and observe marked differences in CNA prevalence between mouse mammary tumours initiated with distinct drivers. Some aberrations are recurrent and unique to specific GEMMs, suggesting distinct driver-dependent routes to tumorigenesis. Synteny-based comparison of mouse and human tumours narrows critical regions in CNAs, thereby identifying candidate driver genes. We experimentally validate that loss of Stratifin (SFN) promotes HER2-induced tumorigenesis in human cells. These results demonstrate the power of GEMM CNA analysis to inform the pathogenesis of human cancer.

DOI10.1038/ncomms12160
Pubmed

http://www.ncbi.nlm.nih.gov/pubmed/27374210?dopt=Abstract

Alternate JournalNat Commun
PubMed ID27374210
PubMed Central IDPMC4932194