RLIM suppresses hepatocellular carcinogenesis by up-regulating p15 and p21

Yongsheng Huang, Meng Nie, Chuang Li, Yingjie Zhao, Jiahui Li, Lan Zhou, Lin Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Hepatocellular carcinogenesis results from dysregulation of oncogenes and tumor suppressors that influence cellular proliferation, differentiation and apoptosis. p15 and p21 are cyclin-dependent kinase inhibitors, which arrest cell proliferation and serve as critical tumor suppressors. Here we report that the E3 ubiquitin ligase RLIM expression is downregulated in hepatocellular carcinoma patients, and correlated with p15 and p21 expression in clinical progression. In addition, we showed that RLIM overexpression suppresses the cell growth and arrests cell cycle progression of hepatocellular carcinoma. Mechanistically, we found that RLIM directly binds to MIZ1, disrupting the interaction between c-MYC and MIZ1, and enhancing p15 and p21 transcription. Our results demonstrate that RLIM is an important suppressor in hepatocellular carcinogenesis.

Original languageEnglish (US)
Pages (from-to)83075-83087
Number of pages13
JournalOncotarget
Volume8
Issue number47
DOIs
StatePublished - 2017

Keywords

  • Hepatocellular carcinogenesis
  • MIZ1
  • P15
  • P21
  • RLIM

ASJC Scopus subject areas

  • Oncology

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