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Zinc activates damage-sensing TRPA1 ion channels

Open access
Hu, Hongzhen, Bandell, Michael, Petrus, Matt J, Zhu, Michael X, Patapoutian, Ardem·2009·Nature Chemical Biology

Abstract

Zinc is an essential biological trace element. It is required for the structure or function of over 300 proteins, and is increasingly recognized for its role in cell signaling. However, high concentrations of zinc have cytotoxic effects, and overexposure to zinc can cause pain and inflammation through unknown mechanisms. Here we show that zinc excites nociceptive somatosensory neurons and causes nociception in mice through TRPA1, a cation channel previously shown to mediate the pungency of wasabi and cinnamon through cysteine-modification. Zinc activates TRPA1 through a novel mechanism that requires zinc influx through TRPA1 channels and subsequent activation via specific intracellular cysteine and histidine residues. TRPA1 is highly sensitive to intracellular zinc, as low nanomolar concentrations activate TRPA1 and modulate its sensitivity. These findings identify TRPA1 as a major target for the sensory effects of zinc, and support an emerging role for zinc as a signaling molecule that can modulate sensory transmission.

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Metadata

Authors
Hu, H., Bandell, M., Petrus, M. J., Zhu, M. X., & Patapoutian, A.
Venue
Nature Chemical Biology
Published
2009-02-08
Volume
5
Issue
3
Pages
183-190
ISSN
  • 1552-4450 (ISSN-L)
  • 1552-4469
OpenAlex
W2047426956
Cited by
229
References
1
FWCI
7.86
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Zinc activates damage-sensing TRPA1 ion channels. https://app.cochat.ai/papers/10.1038/nchembio.146
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Hu, H., Bandell, M., Petrus, M. J., Zhu, M. X., & Patapoutian, A. (2009). Zinc activates damage-sensing TRPA1 ion channels. Nature Chemical Biology. https://doi.org/10.1038/nchembio.146

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