BAF180 promotes cohesion and prevents genome instability and aneuploidy

Peter M Brownlee, Anna L Chambers, Ross Cloney, Alessandro Bianchi, Jessica A Downs

Research output: Contribution to journalArticle (Academic Journal)peer-review

54 Citations (Scopus)

Abstract

BAF180, a subunit of the PBAF chromatin remodeling complex, is frequently mutated in cancer. Although PBAF regulates transcription, it remains unclear whether this is what drives tumorigenesis in cells lacking BAF180. Based on data from yeast, we hypothesized that BAF180 may prevent tumorigenesis by promoting cohesion. Here, we show BAF180 is required for centromeric cohesion in mouse and human cells. Mutations identified in tumor samples are unable to support this activity, and also compromise cohesion-dependent functions in yeast. We provide evidence of genome instability in line with loss of cohesion, and importantly, we find dynamic chromosome instability following DNA damage in cells lacking BAF180. These data demonstrate a function for BAF180 in promoting genome stability that is distinct from its well-characterized role in transcriptional regulation, uncovering a potent mechanism for its tumor-suppressor activity.

Original languageEnglish
Pages (from-to) 973-981
Number of pages9
JournalCell Reports
Volume6
Issue number6
DOIs
Publication statusPublished - 27 Mar 2014

Bibliographical note

Copyright © 2014 The Authors. Published by Elsevier Inc. All rights reserved.

Keywords

  • Aneuploidy
  • Animals
  • Gene Expression Regulation
  • Genomic Instability
  • HMGB Proteins
  • Humans
  • Mice
  • Nuclear Proteins
  • Transcription Factors

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