Novel TRPV1 Channel Agonists With Faster and More Potent Analgesic Properties Than Capsaicin

Yorley Duarte, Javier Cáceres, Romina V. Sepúlveda, Diego Arriagada, Pedro Olivares, Ignacio Díaz-Franulic, Jimmy Stehberg, Fernando González-Nilo

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The transient receptor potential vanilloid 1 (TRPV1) ion channel is a member of the family of Transient Receptor Potential (TRP) channels that acts as a molecular detector of noxious signals in primary sensory neurons. Activated by capsaicin, heat, voltage and protons, it is also well known for its desensitization, which led to the medical use of topically applied TRPV1 agonist capsaicin for its long-lasting analgesic effects. Here we report three novel small molecules, which were identified using a Structure-Based Virtual Screening for TRPV1 from the ZINC database. The three compounds were tested using electrophysiological assays, which confirmed their capsaicin-like agonist activity. von Frey filaments were used to measure the analgesic effects of the compounds applied topically on tactile allodynia induced by intra-plantar carrageenan. All compounds had anti-nociceptive activity, but two of them showed faster and longer lasting analgesic effects than capsaicin. The present results suggest that TRPV1 agonists different from capsaicin could be used to develop topical analgesics with faster onset and more potent effects.

Original languageEnglish
Article number1040
JournalFrontiers in Pharmacology
Volume11
DOIs
Publication statusPublished - 14 Jul 2020

Keywords

  • allodynia
  • analgesic
  • capsaicin
  • carrageenan
  • drug discovery
  • transient receptor potential vanilloid 1 channels
  • TRPV1
  • von frey

ASJC Scopus subject areas

  • Pharmacology
  • Pharmacology (medical)

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