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Updated: Mar 5, 2026
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Yeast Luminometric and Xenopus Oocyte Electrophysiological Examinations of the Molecular Mechanosensitivity of TRPV4
Published on: December 31, 2013
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TRPV4 Moves toward Center-Fold in Rosacea Pathogenesis
Yong Chen1, Carlene D Moore1, Jennifer Y Zhang2
1Department of Neurology, Duke University, School of Medicine, Durham, North Carolina, USA.
The Journal of Investigative Dermatology
|March 26, 2017
Summary
Transient Receptor Potential Vanilloid 4 (TRPV4) channel activity is implicated in rosacea. Upregulated TRPV4 in mast cells, triggered by cathelicidin LL37, contributes to rosacea pathogenesis, suggesting TRPV4 as a therapeutic target.
Area of Science:
- Dermatology
- Immunology
- Molecular Biology
Background:
- Rosacea is a chronic inflammatory skin condition.
- Mast cells play a key role in rosacea pathogenesis.
- The cathelicidin fragment LL37 is implicated in rosacea.
- Transient Receptor Potential Vanilloid 4 (TRPV4) channels are involved in cellular signaling.
Purpose of the Study:
- To investigate the role of TRPV4 in mast cell degranulation in a murine model of rosacea.
- To determine if TRPV4 expression is upregulated by LL37 in mast cells.
- To explore whether TRPV4-mediated calcium influx triggers mast cell degranulation.
Main Methods:
- Murine model of rosacea.
- Assessment of TRPV4 expression in mast cells.
- Evaluation of mast cell degranulation.
- Analysis of calcium influx through TRPV4 channels.
Main Results:
- TRPV4 expression is upregulated in mast cells in response to LL37 in a murine rosacea model.
- Loss of TRPV4 function attenuates mast cell degranulation.
- TRPV4-mediated calcium influx is suggested to evoke mast cell degranulation.
Conclusions:
- TRPV4 is a potential therapeutic target for rosacea.
- Further research is needed to elucidate the signaling mechanisms of TRPV4 upregulation.
- TRPV4-mediated calcium influx is a key mechanism in LL37-induced mast cell degranulation in rosacea.
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