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Updated: Jul 4, 2026

Expression and Purification of the Human Lipid-sensitive Cation Channel TRPC3 for Structural Determination by Single-particle Cryo-electron Microscopy
08:27

Expression and Purification of the Human Lipid-sensitive Cation Channel TRPC3 for Structural Determination by Single-particle Cryo-electron Microscopy

Published on: January 7, 2019

TRPC1 binds to caveolin-3 and is regulated by Src kinase - role in Duchenne muscular dystrophy

Othon L Gervásio1, Nicholas P Whitehead, Ella W Yeung

  • 1School of Medical Sciences, Discipline of Physiology (F13), Bosch Institute, The University of Sydney, NSW 2006, Australia.

Journal of Cell Science
|June 12, 2008
PubMed

Insights

A pathway involving reactive oxygen species (ROS), Src-kinase, TRPC1, and caveolin-3 contributes to Duchenne muscular dystrophy (DMD) pathogenesis in mdx mice. Inhibiting ROS or Src-kinase activity reduces muscle cell damage and improves muscle function.

Area of Science:

  • Muscle physiology
  • Molecular biology
  • Biochemistry

Background:

  • Duchenne muscular dystrophy (DMD) involves muscle cell damage.
  • Transient receptor potential canonical 1 (TRPC1) channels may mediate calcium influx in DMD.
  • TRPC1 channels are implicated in calcium (Ca2+) influx and muscle cell damage in mdx mice.

Purpose of the Study:

  • To investigate the role of TRPC1, caveolin-3, and Src-kinase in the pathogenesis of Duchenne muscular dystrophy (DMD).
  • To elucidate the contribution of a reactive oxygen species (ROS)-Src-TRPC1/caveolin-3 pathway to mdx/DMD muscle pathology.

Main Methods:

  • Western blotting to quantify protein levels in mdx and wild-type muscle.
  • Co-immunoprecipitation and Förster resonance energy transfer (FRET) to assess protein interactions.
  • Measurement of Ca2+ influx and muscle force recovery in response to ROS and inhibitors.

Main Results:

  • TRPC1, caveolin-3, and Src-kinase protein levels were elevated in mdx muscle.
  • TRPC1 and caveolin-3 were found to colocalize, co-immunoprecipitate, and directly bind.
  • A pathway involving ROS, Src-kinase, TRPC1, and caveolin-3 was identified, contributing to Ca2+ influx and muscle damage in mdx mice.

Conclusions:

  • The ROS-Src-TRPC1/caveolin-3 pathway is implicated in the pathogenesis of Duchenne muscular dystrophy (DMD).
  • Targeting this pathway with ROS scavengers or Src inhibitors may offer therapeutic benefits for DMD.

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