Integrated Genomic Analysis of the Ubiquitin Pathway across Cancer Types

The Cancer Genome Atlas Research Network

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Protein ubiquitination is a dynamic and reversible process of adding single ubiquitin molecules or various ubiquitin chains to target proteins. Here, using multidimensional omic data of 9,125 tumor samples across 33 cancer types from The Cancer Genome Atlas, we perform comprehensive molecular characterization of 929 ubiquitin-related genes and 95 deubiquitinase genes. Among them, we systematically identify top somatic driver candidates, including mutated FBXW7 with cancer-type-specific patterns and amplified MDM2 showing a mutually exclusive pattern with BRAF mutations. Ubiquitin pathway genes tend to be upregulated in cancer mediated by diverse mechanisms. By integrating pan-cancer multiomic data, we identify a group of tumor samples that exhibit worse prognosis. These samples are consistently associated with the upregulation of cell-cycle and DNA repair pathways, characterized by mutated TP53, MYC/TERT amplification, and APC/PTEN deletion. Our analysis highlights the importance of the ubiquitin pathway in cancer development and lays a foundation for developing relevant therapeutic strategies. Ge et al. analyze a cohort of 9,125 TCGA samples across 33 cancer types to provide a comprehensive characterization of the ubiquitin pathway. They detect somatic driver candidates in the ubiquitin pathway and identify a cluster of patients with poor survival, highlighting the importance of this pathway in cancer development.

Original languageEnglish
Pages (from-to)213-226.e3
JournalCell Reports
Volume23
Issue number1
DOIs
StatePublished - Apr 3 2018
Externally publishedYes

Keywords

  • FBXW7
  • The Cancer Genome Atlas
  • biomarker
  • cancer prognosis
  • pan-cancer analysis
  • therapeutic targets
  • tumor subtype
  • ubiquitin pathway

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