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Published on: February 13, 2018
Painful toxins acting at TRPV1
Brett A Cromer1, Peter McIntyre
1Department of Pharmacology, University of Melbourne, Victoria 3010, Australia.
Summary
Plant and animal toxins activate the TRPV1 ion channel, a key pain sensor. This review explores toxins from various sources that target TRPV1, influencing pain pathways.
Area of Science:
- Neuroscience
- Toxicology
- Molecular Biology
Background:
- Many toxins induce aversion through taste or pain.
- The TRPV1 ion channel is crucial for sensing and integrating pain signals.
Purpose of the Study:
- To review toxins targeting the TRPV1 ion channel.
- To explore structural interactions between toxins and TRPV1.
Main Methods:
- Literature review of toxins acting on TRPV1.
- Analysis of structural information for toxin-binding sites.
- Comparison with Kv ion channel structures.
Main Results:
- Toxins from plants, spiders, and jellyfish activate TRPV1.
- Vanillotoxins and resiniferatoxin are identified as TRPV1 agonists.
- A model suggests toxin interaction with a voltage-sensor-homologous region of TRPV1.
Conclusions:
- TRPV1 is a significant target for diverse natural toxins.
- Understanding toxin-TRPV1 interactions advances pain research.
- Structural insights guide the development of novel pain therapeutics.
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