Subtype-selective allosteric modulators of muscarinic receptors for the treatment of CNS disorders.

Conn PJ, Jones CK, Lindsley CW
Trends Pharmacol Sci. 2009 30 (3): 148-55

PMID: 19201489 · PMCID: PMC2907736 · DOI:10.1016/j.tips.2008.12.002

Muscarinic acetylcholine receptors (mAChRs) have long been viewed as viable targets for novel therapeutic agents for the treatment of Alzheimer's disease (AD) and other disorders involving impaired cognitive function. More recent evidence indicates that mAChR activators might also have utility in treating psychosis and other symptoms associated with schizophrenia and other central nervous system (CNS) disorders. Efforts to develop mAChR subtype-selective agonists have been hampered by difficulty in achieving high selectivity for individual mAChR subtypes important for CNS function (M(1) and M(4)) and adverse effects due to activation of peripheral mAChRs (especially M(2) and M(3)). Major advances have now been achieved in the discovery of allosteric agonists and positive allosteric modulators of M(1) and M(4) that show greater selectivity for individual mAChR subtypes than do previous mAChR agonists. Early studies indicate that these allosteric mAChR activators have properties needed for optimization as potential clinical candidates and have robust effects in animal models that predict efficacy in the treatment of AD, schizophrenia and related disorders.

MeSH Terms (13)

Allosteric Regulation Alzheimer Disease Animals Antipsychotic Agents Central Nervous System Agents Humans Mental Disorders Muscarinic Agonists Muscarinic Antagonists Receptor, Muscarinic M1 Receptor, Muscarinic M4 Receptors, Muscarinic Schizophrenia

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