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Really interesting new gene finger protein 121 is a tumor suppressor of renal cell carcinoma

Ping Xiang1, Youwen Sun1, Yixun Liu1

  • 1Department of Urology, Anhui Provincial Hospital, Lujiang Road, Hefei 230001, China.

Gene
|August 28, 2018
PubMed

Insights

New research shows that the RING finger protein 121 (RNF121) is underexpressed in renal cell carcinoma (RCC) and inhibits tumor growth. RNF121 also impacts cancer cell proliferation, migration, and invasion by activating the NF-κB pathway.

Area of Science:

  • Molecular Biology
  • Oncology
  • Biochemistry

Background:

  • RING finger protein 121 (RNF121) is an E3 ubiquitin ligase regulating signaling pathways.
  • The nuclear factor-κB (NF-κB) pathway is crucial in tumorigenesis.
  • The role of RNF121 in cancer development is not well understood.

Purpose of the Study:

  • To investigate the role of RNF121 in renal cell carcinoma (RCC) development.
  • To explore the relationship between RNF121 expression and RCC progression.
  • To elucidate the mechanism by which RNF121 affects RCC cells.

Main Methods:

  • Analysis of RNF121 expression in RCC tumor tissues versus normal tissues.
  • In vivo and in vitro experiments using human RCC cells (768-O cell line).
  • Investigation of RNF121's effect on NF-κB signaling pathway activation.

Main Results:

  • RNF121 expression was significantly lower in RCC tumor tissues compared to adjacent normal tissues.
  • Overexpression of RNF121 suppressed RCC cell growth in vivo.
  • RNF121 inhibited proliferation, migration, and invasion of RCC cells in vitro.
  • RNF121 was found to activate the NF-κB signaling pathway by promoting IκBα degradation.

Conclusions:

  • RNF121 plays a previously unrecognized role in RCC development.
  • RNF121 acts as a tumor suppressor in RCC.
  • RNF121's activation of the NF-κB pathway offers potential therapeutic targets for RCC.
Keywords:
Nuclear factor-κBPRNF121Renal cell carcinomaUbiquitination

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