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ECHS1 suppresses renal cell carcinoma development through inhibiting mTOR signaling activation

Lei Wang1, Yijun Qi2, Xi Wang2

  • 1Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.

Biomedicine & Pharmacotherapy = Biomedecine & Pharmacotherapie
|January 1, 2020
PubMed

Insights

This study identifies dysregulated lipid metabolism in clear cell renal cell carcinoma (ccRCC). Downregulation of enzyme ECHS1 suppresses tumor growth and migration, suggesting its potential as a diagnostic biomarker and therapeutic target for kidney cancer.

Area of Science:

  • Proteomics
  • Oncology
  • Molecular Biology

Background:

  • Renal cell carcinoma (RCC) management is evolving, necessitating deeper understanding of its mechanisms for improved therapies and early diagnosis.
  • Identifying molecular alterations in clear cell renal cell carcinoma (ccRCC) is crucial for developing targeted treatments and diagnostic tools.

Purpose of the Study:

  • To investigate differentially expressed proteins (DEPs) in ccRCC tissues across different stages using proteomics.
  • To identify key molecular pathways and potential biomarkers involved in ccRCC progression.
  • To evaluate the functional role of ECHS1 in ccRCC cell behavior and its potential as a therapeutic target.

Main Methods:

  • iTRAQ-based proteomics analysis of ccRCC tissues from patients in various stages.
  • Bioinformatic analysis to identify common DEPs and enriched pathways.
  • Western blotting and immunohistochemistry to validate ECHS1 expression.
  • In vitro experiments to assess the effect of ECHS1 overexpression on ccRCC cell proliferation and migration.

Main Results:

  • 130 common DEPs were identified across different ccRCC stages, with significant dysregulation in lipid metabolism pathways.
  • ECHS1, a fatty acid metabolism enzyme, was significantly downregulated in ccRCC tissues.
  • ECHS1 expression effectively discriminated ccRCC tissues from normal tissues (AUC > 0.7).
  • ECHS1 overexpression inhibited ccRCC cell proliferation and migration by suppressing mTOR pathway activation.

Conclusions:

  • Lipid metabolism is a key dysregulated pathway in ccRCC.
  • ECHS1 is a promising diagnostic biomarker for ccRCC, particularly in early stages.
  • ECHS1 holds potential as a novel therapeutic target for ccRCC interventions.
Keywords:
Diagnostic biomarkerECHS1Renal cell carcinomaTargeted therapymTOR

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