Cited by 413Ion Channels and ReceptorsGastrointestinal motility and disordersBiochemical Analysis and Sensing Techniques

TRPA1 regulates gastrointestinal motility through serotonin release from enterochromaffin cells

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Nozawa, Katsura, Kawabata-Shoda, Eri, Doihara, Hitoshi, Kojima, Ryosuke, Okada, Hidetsugu, Mochizuki, Shinobu, Sano, Yorikata, Inamura, Kohei +4 more·2009·Proceedings of the National Academy of Sciences

Abstract

Serotonin (5-hydroxytryptamine; 5-HT) is abundantly present throughout the gastrointestinal tract and stored mostly in enterochromaffin (EC) cells, which are located on the mucosal surface. 5-HT released from EC cells stimulate both intrinsic and extrinsic nerves, which results in various physiological and pathophysiological responses, such as gastrointestinal contractions. EC cells are believed to have the ability to respond to the chemical composition of the luminal contents of the gut; however, the underlying molecular and cellular mechanisms have not been identified. Here, we demonstrate that the transient receptor potential (TRP) cation channel TRPA1, which is activated by pungent compounds or cold temperature, is highly expressed in EC cells. We also found that TRPA1 agonists, including allyl isothiocyanate and cinnamaldehyde, stimulate EC cell functions, such as increasing intracellular Ca 2+ levels and 5-HT release, by using highly concentrated EC cell fractions and a model of EC cell function, the RIN14B cell line. Furthermore, we showed that allyl isothiocyanate promotes the contraction of isolated guinea pig ileum via the 5-HT 3 receptor. Taken together, our results indicate that TRPA1 acts as a sensor molecule for EC cells and may regulate gastrointestinal function.

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Authors
Nozawa, K., Kawabata-Shoda, E., Doihara, H., Kojima, R., Okada, H., Mochizuki, S., Sano, Y., Inamura, K., Matsushime, H., Koizumi, T., Yokoyama, T., & Ito, H.
Affiliations
Astellas Pharma (Japan) (JP)
Corresponding author
Nozawa, Katsura
Venue
Proceedings of the National Academy of Sciences
Published
2009-03-03
Volume
106
Issue
9
Pages
3408-3413
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2156291426
Cited by
399
References
49
Citations by year
2026: 16 · 2025: 32 · 2024: 20 · 2023: 31 · 2022: 25 · 2021: 46 · 2020: 18 · 2019: 23 · 2018: 24 · 2017: 21 · 2016: 24 · 2015: 15 · 2014: 21 · 2013: 24 · 2012: 21
FWCI
9.74
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Health Sciences › Nursing › Nutrition and Dietetics › Biochemical Analysis and Sensing Techniques
Keywords
TRPA1, enterochromaffin cells, serotonin release, gastrointestinal motility, allyl isothiocyanate, cinnamaldehyde, 5-HT3 receptor, ileal contraction, intracellular calcium, sensory transduction
MeSH terms
TRPA1 Cation Channel, Animals, Calcium, Cell Line, Enterochromaffin Cells, Gastrointestinal Motility, Gene Expression Regulation, Guinea Pigs, Humans, Male, Nerve Tissue Proteins, Serotonin, Calcium Channels, Ankyrins, Transient Receptor Potential Channels, TRPC Cation Channels, Mice, Rats

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