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April 23, 2014Journal of Biological ChemistryOpen Access

Functional Role for Piezo1 in Stretch-evoked Ca2+ Influx and ATP Release in Urothelial Cell Cultures

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Authors

TMTatsuya MiyamotoMatsue Red Cross HospitalTMTsutomu MochizukiUniversity of YamanashiHNHiroshi NakagomiBhabha Atomic Research Centre

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Overview

Cell culture study reveals Piezo1 drives stretch-induced calcium influx and ATP release in urothelial cells, suggesting a novel therapeutic target for bladder dysfunction.

Key Points

  • To determine the molecular expression and mechanosensory role of the Piezo1 channel in bladder urothelial cells during mechanical stretch.
  • Evaluated Piezo1 protein expression in mouse and human bladder urothelium using immunofluorescence assays.
  • Measured intracellular calcium influx and ATP release in cultured mouse urothelial cells exposed to mechanical stretch, with and without Piezo1 knockdown or the channel inhibitor GsMTx4.
  • Piezo1 was abundantly expressed in both mouse and human bladder urothelium.
  • Mechanical stretch induced cytosolic calcium influx and subsequent ATP release in urothelial cells, both of which were suppressed by Piezo1 knockdown or GsMTx4 treatment.
  • Piezo1 and TRPV4 responded differentially to distinguish varying intensities of mechanical stretch stimulation.

Cite This Study

Miyamoto et al. (2014) studied this question.

synapsesocial.com/papers/69db06da498b35d3e6a3c253https://doi.org/10.1074/jbc.m113.528638
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