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A proton-gated cation channel involved in acid-sensing

Author

Listed:
  • Rainer Waldmann

    (Institut de Pharmacologie Moléculaire et Cellulaire, CNRS)

  • Guy Champigny

    (Institut de Pharmacologie Moléculaire et Cellulaire, CNRS)

  • Frédéric Bassilana

    (Institut de Pharmacologie Moléculaire et Cellulaire, CNRS)

  • Catherine Heurteaux

    (Institut de Pharmacologie Moléculaire et Cellulaire, CNRS)

  • Michel Lazdunski

    (Institut de Pharmacologie Moléculaire et Cellulaire, CNRS)

Abstract

Acid-sensing is associated with both nociception1 and taste transduction2. Stimulation of sensory neurons by acid is of particular interest, because acidosis accompanies many painful inflammatory and ischaemic conditions. The pain caused by acids is thought to be mediated by H+-gated cation channels present in sensory neurons3–5. We have now cloned a H+-gated channel (ASIC, for acid-sensing ionic channel) that belongs to the amilor-ide-sensitive Na+ channel6–1 Vdegenerin12–14 family of ion channels. Heterologous expression of ASIC induces an amiloride-sensitive cation (Na+ ≥ Ca2+ ≥ K+) channel which is transiently activated by rapid extracellular acidification. The biophysical and pharmacological properties of the ASIC channel closely match the H+-gated cation channel described in sensory neurons3,15,16. ASIC is expressed in dorsal root ganglia and is also distributed widely throughout the brain. ASIC appears to be the simplest of ligand-gated channels.

Suggested Citation

  • Rainer Waldmann & Guy Champigny & Frédéric Bassilana & Catherine Heurteaux & Michel Lazdunski, 1997. "A proton-gated cation channel involved in acid-sensing," Nature, Nature, vol. 386(6621), pages 173-177, March.
    • Handle: RePEc:nat:nature:v:386:y:1997:i:6621:d:10.1038_386173a0
    DOI: 10.1038/386173a0
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    Cited by:

    1. Madeleine R. Wilcox & Aparna Nigam & Nathan G. Glasgow & Chamali Narangoda & Matthew B. Phillips & Dhilon S. Patel & Samaneh Mesbahi-Vasey & Andreea L. Turcu & Santiago Vázquez & Maria G. Kurnikova & , 2022. "Inhibition of NMDA receptors through a membrane-to-channel path," Nature Communications, Nature, vol. 13(1), pages 1-15, December.

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