Comprehensive functional characterization of cancer–testis antigens defines obligate participation in multiple hallmarks of cancer

Tumours frequently activate genes whose expression is otherwise biased to the testis, collectively known as cancer–testis antigens (CTAs). The extent to which CTA expression represents epiphenomena or confers tumorigenic traits is unknown. In this study, to address this, we implemented a multidimensional functional genomics approach that incorporates 7 different phenotypic assays in 11 distinct disease settings. We identify 26 CTAs that are essential for tumor cell viability and/or are pathological drivers of HIF, WNT or TGFβ signalling. In particular, we discover that Foetal and Adult Testis Expressed 1 (FATE1) is a key survival factor in multiple oncogenic backgrounds. FATE1 prevents the accumulation of the stress-sensing BH3-only protein, BCL-2-Interacting Killer (BIK), thereby permitting viability in the presence of toxic stimuli. Furthermore, ZNF165 promotes TGFβ signalling by directly suppressing the expression of negative feedback regulatory pathways. This action is essential for the survival of triple negative breast cancer cells in vitro and in vivo. Thus, CTAs make significant direct contributions to tumour biology. Proteins usually expressed solely in the testes are often found over-expressed in cancer and are termed cancer testis antigens. Here, the authors use a comprehensive screening strategy to identify 26 cancer-testis antigens that promote tumorigenic behaviour.

• Publication year

  2015

• Venue

  Nature Communications

• Publication date

  2015-11-16

• Fields of study

  Biology, Medicine

• Identifiers
  DOI 10.1038/ncomms9840PMID 26567849PMCID 4660212
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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