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In Vitro Analysis of E3 Ubiquitin Ligase Function
06:06

In Vitro Analysis of E3 Ubiquitin Ligase Function

Published on: May 14, 2021

5.9K

The Roles of Cullin-2 E3 Ubiquitin Ligase Complex in Cancer

Xijuan Liu1, Giada Zurlo1,2, Qing Zhang3,4,5,6

  • 1Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC, USA.

Advances in Experimental Medicine and Biology
|January 4, 2020
PubMed

Insights

Cullin-2 E3 ligase complexes regulate protein stability and function. This review focuses on Cullin-2 complexes, particularly the VHL signaling pathway in clear cell renal cell carcinoma (ccRCC), offering potential therapeutic strategies.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Oncology

Background:

  • Posttranslational protein modifications are crucial for protein stability and cellular functions.
  • Cullin-2 is a key component of E3 ubiquitin ligase complexes, essential for protein degradation.
  • These complexes involve elongin B, elongin C, RBX1, and substrate recognition subunits (SRS).

Purpose of the Study:

  • To review Cullin-2 E3 ligase complexes with diverse SRS proteins.
  • To highlight the role of the von Hippel Lindau (VHL) signaling pathway in clear cell renal cell carcinoma (ccRCC).
  • To explore potential therapeutic targets within the VHL pathway for ccRCC treatment.

Main Methods:

  • Literature review of Cullin-2 E3 ligase complexes and their SRS partners.
  • Focus on the VHL signaling pathway and its implications in ccRCC.
  • Analysis of potential therapeutic avenues based on VHL pathway dysregulation.

Main Results:

  • Cullin-2 forms complexes with various SRS proteins, including pVHL, LRR-1, PRAME, FEM-1, and ZYG-11.
  • The VHL signaling pathway is implicated in the pathogenesis of ccRCC.
  • Dysregulation of the VHL pathway presents opportunities for targeted cancer therapies.

Conclusions:

  • Cullin-2 E3 ligase complexes are vital regulators of protein homeostasis.
  • The VHL pathway is a critical target for ccRCC therapy.
  • Understanding these complexes may lead to novel treatment strategies for this lethal cancer.
Keywords:
CancerCullin-2E3 ubiquitin ligaseHIFHypoxiaVHLccRCCpVHL

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