RNF20 Links Histone H2B Ubiquitylation with Inflammation and Inflammation-Associated Cancer

Ohad Tarcic, Ioannis S. Pateras, Tomer Cooks, Efrat Shema, Julia Kanterman, Hadas Ashkenazi, Hana Boocholez, Ayala Hubert, Ron Rotkopf, Michal Baniyash, Eli Pikarsky, Vassilis G. Gorgoulis, Moshe Oren

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

Factors linking inflammation and cancer are of great interest. We now report that the chromatin-targeting E3 ubiquitin ligase RNF20/RNF40, driving histone H2B monoubiquitylation (H2Bub1), modulates inflammation and inflammation-associated cancer in mice and humans. Downregulation of RNF20 and H2Bub1 favors recruitment of p65-containing nuclear factor κB (NF-κB) dimers over repressive p50 homodimers and decreases the heterochromatin mark H3K9me3 on a subset of NF-κB target genes to augment their transcription. Concordantly, RNF20+/- mice are predisposed to acute and chronic colonic inflammation and inflammation-associated colorectal cancer, with excessive myeloid-derived suppressor cells (MDSCs) that may quench antitumoral T cell activity. Notably, colons of human ulcerative colitis patients, as well as colorectal tumors, reveal downregulation of RNF20/RNF40 and H2Bub1 in both epithelium and stroma, supporting the clinical relevance of our tissue culture and mouse model findings.

Original languageEnglish
Pages (from-to)1462-1476
Number of pages15
JournalCell Reports
Volume14
Issue number6
DOIs
StatePublished - 16 Feb 2016
Externally publishedYes

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology

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