REGγ deficiency suppresses tumor progression via stabilizing CK1ϵ in renal cell carcinoma article

  • Shaojun Chen
  • , Qingwei Wang
  • , Longsheng Wang
  • , Hui Chen
  • , Xiao Gao
  • , Dongkui Gong
  • , Junjie Ma
  • , Syeda Kubra
  • , Xudong Yao
  • , Xiaotao Li
  • , Lei Li*
  • , Wei Zhai
  • , Junhua Zheng
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Renal cell carcinoma (RCC) is the most common malignant disease of kidney in adults. The proteasome activator REGγ was previously reported to promote the degradation of multiple important regulatory proteins and involved in the progression and development of numerous human cancers. Here, we first reported that REGγ was upregulated in RCC and its upregulation was correlated with a poor prognosis in RCC patients. REGγ depletion obviously suppressed RCC cells proliferation in vitro and in vivo. Notably, casein kinase 1ϵ (CK1ϵ) was identified as a novel target of REGγ and knockdown of CK1ϵ effectively abolished the effect of REGγ depletion on RCC cells growth. Importantly, we also observed that REGγ depletion activated Hippo signaling pathway via stabilizing CK1ϵ in RCC, indicating the cross-Talk between REGγ/CK1ϵ axis and Hippo pathway during RCC development. In conclusion, our findings suggested that REGγ played a pivotal role in the development of RCC and maybe helpful to identify new therapeutic strategies in the treatment of RCC.

Original languageEnglish
Article number627
JournalCell Death and Disease
Volume9
Issue number6
DOIs
StatePublished - 1 Jun 2018

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