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Updated: Jan 1, 2026

Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway
07:15

Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway

Published on: August 23, 2024

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Involvement of prohibitin 1 and prohibitin 2 upregulation in cBSA-induced podocyte cytotoxicity

Heng-Hsiung Wu1, Chao-Jung Chen2, Pei-Yu Lin3

  • 1Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.

Journal of Food and Drug Analysis
|December 30, 2019
PubMed

Insights

Membranous nephropathy (MN) involves kidney damage. Researchers found prohibitin proteins (PHB1/PHB2) increase in MN, promoting kidney cell damage and proliferation, suggesting new diagnostic and treatment targets.

Area of Science:

  • Nephrology
  • Molecular Biology
  • Proteomics

Background:

  • Membranous nephropathy (MN) is a leading cause of nephrotic syndrome in adults.
  • Effective treatments for MN are limited, necessitating the discovery of new diagnostic and therapeutic targets.

Purpose of the Study:

  • To identify novel protein targets for the diagnosis and treatment of membranous nephropathy.
  • To investigate the role of specific proteins in the pathogenesis of MN using a mouse model.

Main Methods:

  • Established a mouse model of MN via cationic bovine serum albumin (cBSA) administration.
  • Utilized label-free proteomics and immunohistochemistry (IHC) to analyze protein expression changes in kidney tissues.
  • Performed shRNA-mediated knockdown and microarray analysis to assess protein function and regulatory mechanisms.

Main Results:

  • Identified 273 differentially expressed proteins in MN mice, with downregulation in cellular catabolic processes.
  • Observed significant upregulation of prohibitin 1 (PHB1) and prohibitin 2 (PHB2) in kidney tubular cells and glomeruli of MN mice.
  • Demonstrated that PHB1/PHB2 knockdown inhibited p53, promoted podocyte proliferation, and contributed to cBSA-induced cytotoxicity, potentially linked to proteasome activity blockage.

Conclusions:

  • Upregulation of PHB1 and PHB2 is implicated in the pathogenesis of membranous nephropathy.
  • PHB2's role in cBSA-mediated podocyte cytotoxicity suggests it as a potential therapeutic target for MN.
  • Further research into proteasome activity and PHB proteins may yield new diagnostic and treatment strategies for MN.
Keywords:
Membranous nephropathyProhibitin 1Prohibitin 2

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