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Updated: Jun 20, 2026
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Yeast Luminometric and Xenopus Oocyte Electrophysiological Examinations of the Molecular Mechanosensitivity of TRPV4
Published on: December 31, 2013
Identification and characterization of novel TRPV4 modulators
Fabien Vincent1, Alejandra Acevedo, Margaret T Nguyen
1In Vitro Pharmacology Department, Renovis, Inc., South San Francisco, CA 94080, USA. fabien.vincent@evotec.com
Biochemical and Biophysical Research Communications
|September 10, 2009
Summary
Researchers identified RN-1734, a selective TRPV4 antagonist, crucial for studying the transient receptor potential vanilloid 4 (TRPV4) channel. This discovery provides a vital tool for exploring TRPV4
Area of Science:
- Pharmacology
- Molecular Biology
- Ion Channel Research
Background:
- Transient Receptor Potential Vanilloid 4 (TRPV4) channels are activated by various stimuli, including ligands and hypotonicity.
- Understanding TRPV4's in vivo roles is hindered by a lack of selective antagonists.
- Selective agonists and knockout mice are currently used to study TRPV4 functions.
Purpose of the Study:
- To identify and characterize novel selective antagonists for TRPV4.
- To develop a valuable pharmacological tool for TRPV4 research.
Main Methods:
- Screening a library of commercial compounds.
- Electrophysiology and intracellular calcium influx assays.
- TRP channel selectivity panel testing.
Main Results:
- Identification of RN-1747 (agonist) and RN-1734 (antagonist) targeting TRPV4.
- RN-1734 effectively inhibited ligand- and hypotonicity-activated human, rat, and mouse TRPV4.
- RN-1734 demonstrated selectivity for TRPV4 over other TRP channels (TRPV1, TRPV3, TRPM8).
Conclusions:
- RN-1734 is a potent and selective TRPV4 antagonist.
- RN-1734 serves as a valuable pharmacological probe for investigating TRPV4 channel function and its physiological roles.
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