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Updated: Aug 9, 2025

Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium
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Published on: September 1, 2015

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Polycystic kidney disease: novel insights into polycystin function

Lingfei Luo1, Sudipto Roy2, Li Li3

  • 1Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing, 400715, China.

Trends in Molecular Medicine
|February 22, 2023
PubMed

Insights

Autosomal dominant polycystic kidney disease (ADPKD) is caused by mutations affecting polycystin proteins (PC1/2). Restoring PC function in cysts can reverse ADPKD, offering new therapeutic avenues.

Area of Science:

  • Nephrology
  • Genetics
  • Cell Biology

Background:

  • Autosomal dominant polycystic kidney disease (ADPKD) is a severe monogenic disorder.
  • Mutations in PKD1 and PKD2 genes lead to polycystin 1 (PC1) and polycystin 2 (PC2) deficiency.
  • PC1/2 proteins are crucial for regulating renal epithelial cell cilia function.

Purpose of the Study:

  • To review recent research on polycystin function in ADPKD.
  • To explore novel therapeutic strategies for ADPKD based on polycystin research.
  • To understand the role of polycystins in suppressing cilia-dependent cyst activation (CDCA).

Main Methods:

  • Review of recent scientific literature on ADPKD and polycystin function.
  • Analysis of studies investigating the mechanism of PC1/2 in cilia.
  • Examination of research demonstrating cyst reversal upon PC re-expression.

Main Results:

  • PC1/2 normally inhibit the CDCA signal, maintaining renal lumen diameter.
  • PC deficiency activates CDCA, promoting cystogenesis in ADPKD.
  • Re-expression of PCs in existing cysts has shown potential to reverse PKD progression.

Conclusions:

  • The function of PCs is akin to a 'counterbalance in cruise control' for kidney cyst regulation.
  • Novel therapeutic targets for ADPKD are emerging from polycystin research.
  • Future research directions hold promise for effective ADPKD treatments.

Keywords:
ADPKDCDCAcation channelcilialumen diameter controlpolycystin

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