OptoGluNAM4.1, a Photoswitchable Allosteric Antagonist for Real-Time Control of mGlu4 Receptor Activity

Cell Chem Biol. 2016 Aug 18;23(8):929-34. doi: 10.1016/j.chembiol.2016.06.013. Epub 2016 Jul 28.

Abstract

OptoGluNAM4.1, a negative allosteric modulator (NAM) of metabotropic glutamate receptor 4 (mGlu4) contains a reactive group that covalently binds to the receptor and a blue-light-activated, fast-relaxing azobenzene group that allows reversible receptor activity photocontrol in vitro and in vivo. OptoGluNAM4.1 induces light-dependent behavior in zebrafish and reverses the activity of the mGlu4 agonist LSP4-2022 in a mice model of chronic pain, defining a photopharmacological tool to better elucidate the physiological roles of the mGlu4 receptor in the nervous system.

MeSH terms

  • Allosteric Regulation / drug effects
  • Allosteric Regulation / radiation effects
  • Animals
  • Azo Compounds / chemistry
  • Azo Compounds / pharmacology*
  • Disease Models, Animal
  • Dose-Response Relationship, Drug
  • HEK293 Cells
  • Humans
  • Light*
  • Mice
  • Mice, Inbred C57BL
  • Pain Threshold / drug effects
  • Pyrrolidonecarboxylic Acid / analogs & derivatives*
  • Pyrrolidonecarboxylic Acid / chemistry
  • Pyrrolidonecarboxylic Acid / pharmacology
  • Receptors, Metabotropic Glutamate / antagonists & inhibitors*
  • Receptors, Metabotropic Glutamate / metabolism
  • Structure-Activity Relationship
  • Time Factors
  • Zebrafish / metabolism

Substances

  • Azo Compounds
  • OptoGluNAM4.1
  • Receptors, Metabotropic Glutamate
  • Pyrrolidonecarboxylic Acid
  • metabotropic glutamate receptor 4