Light-Activated Pharmacological Tools for Exploring the Cholinergic System

Med Res Rev. 2025 Jul;45(4):1251-1274. doi: 10.1002/med.22108. Epub 2025 Mar 23.

Abstract

Cholinergic transmission plays a critical role in both the central and peripheral nervous systems, affecting processes such as learning, memory, and inflammation. Conventional cholinergic drugs generally suffer from poor selectivity and temporal precision, leading to undesired effects and limited therapeutic efficacy. Photopharmacology aims to overcome the limitations of traditional drugs using photocleavable or photoswitchable ligands and spatiotemporal patterns of illumination. Spanning from muscarinic and nicotinic modulators to cholinesterase inhibitors, this review explores the development and application of light-activated compounds as tools for unraveling the role of cholinergic signaling in both physiological and pathological contexts, while also paving the way for innovative phototherapeutic approaches.

Keywords: muscarinic acetylcholine receptors; nicotinic acetylcholine receptors; photopharmacology; photoswitch; uncaging.

Publication types

  • Review

MeSH terms

  • Animals
  • Cholinergic Agents* / pharmacology
  • Cholinergic Neurons* / drug effects
  • Cholinergic Neurons* / physiology
  • Cholinesterase Inhibitors* / pharmacology
  • Humans
  • Light*
  • Lighting / methods
  • Pharmacology* / methods
  • Photochemotherapy

Substances

  • Cholinergic Agents
  • Cholinesterase Inhibitors