High VHL Expression Reverses Warburg Phenotype and Enhances Immunogenicity in Kidney Tumor Cells

Songbiao Zhu1, Wenxi Ding1, Yuling Chen1

  • 1MOE Key Laboratory of Bioinformatics, Center for Synthetic and Systematic Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China.

Insights

Higher Von Hippel-Lindau (VHL) gene expression in clear cell renal cell carcinoma (ccRCC) correlates with better survival and improved response to interferon treatments. VHL may enhance immunotherapy benefits for ccRCC patients.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Clear cell renal cell carcinoma (ccRCC) is a common kidney cancer.
  • The Von Hippel-Lindau (VHL) tumor suppressor gene is frequently mutated in ccRCC.
  • The role of VHL in ccRCC tumors with wild-type VHL is not fully understood.

Purpose of the Study:

  • To investigate the functional role of VHL in ccRCC progression and its impact on patient outcomes.
  • To explore the molecular mechanisms by which VHL influences ccRCC biology.
  • To identify potential therapeutic strategies for ccRCC based on VHL expression.

Main Methods:

  • Analysis of The Cancer Genome Atlas (TCGA) datasets for VHL expression and disease-free survival (DFS).
  • In vitro studies involving VHL overexpression in ccRCC cells.
  • Proteomic analysis to identify VHL-regulated biological pathways.
  • Development and validation of an interferon-responsive signature (IRS).

Main Results:

  • Higher VHL expression is associated with improved DFS in ccRCC patients.
  • VHL overexpression inhibits epithelial-mesenchymal transition (EMT), SREBP1-regulated triglyceride synthesis, and cell proliferation.
  • VHL regulates key biological processes including metabolism, immune regulation, apoptosis, and cell movement.
  • VHL overexpression up-regulates antigen processing and interferon-responsive proteins, increasing sensitivity to interferon treatment.
  • An interferon-responsive signature (IRS) of ten proteins correlates positively with DFS.

Conclusions:

  • VHL plays a significant role in ccRCC progression, independent of its mutation status.
  • VHL overexpression confers sensitivity to interferon-based therapies.
  • VHL expression levels can predict patient outcomes and guide immunotherapy decisions in ccRCC.

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