Salvinorin A: A potent naturally occurring nonnitrogenous κ opioid selective agonist

作者：Bryan L. Roth, Karen Baner, Richard B. Westkaemper, Daniel J. Siebert, Kenner C. Rice, S Steinberg, Paul R. Ernsberger, Richard B. Rothman · 发表于：Proceedings of the National Academy of Sciences · 年份：2002 · DOI：10.1073/pnas.182234399 · 被引用次数：787 · 研究领域：Receptor Mechanisms and Signaling、Neuropeptides and Animal Physiology、Pharmacological Receptor Mechanisms and Effects

Salvia divinorum, whose main active ingredient is the neoclerodane diterpene Salvinorin A, is a hallucinogenic plant in the mint family that has been used in traditional spiritual practices for its psychoactive properties by the Mazatecs of Oaxaca, Mexico. More recently, S. divinorum extracts and Salvinorin A have become more widely used in the U.S. as legal hallucinogens. We discovered that Salvinorin A potently and selectively inhibited (3)H-bremazocine binding to cloned kappa opioid receptors. Salvinorin A had no significant activity against a battery of 50 receptors, transporters, and ion channels and showed a distinctive profile compared with the prototypic hallucinogen lysergic acid diethylamide. Functional studies demonstrated that Salvinorin A is a potent kappa opioid agonist at cloned kappa opioid receptors expressed in human embryonic kidney-293 cells and at native kappa opioid receptors expressed in guinea pig brain. Importantly, Salvinorin A had no actions at the 5-HT(2A) serotonin receptor, the principal molecular target responsible for the actions of classical hallucinogens. Salvinorin A thus represents, to our knowledge, the first naturally occurring nonnitrogenous opioid-receptor subtype-selective agonist. Because Salvinorin A is a psychotomimetic selective for kappa opioid receptors, kappa opioid-selective antagonists may represent novel psychotherapeutic compounds for diseases manifested by perceptual distortions (e.g., schizophrenia, dementia, and bipolar d...