PF-06827443 Displays Robust Allosteric Agonist and Positive Allosteric Modulator Activity in High Receptor Reserve and Native Systems.

ABSTRACT: Positive allosteric modulators (PAMs) of the M₁ subtype of muscarinic acetylcholine receptor have attracted intense interest as an exciting new approach for improving the cognitive deficits in schizophrenia and Alzheimer's disease. Recent evidence suggests that the presence of intrinsic agonist activity of some M₁ PAMs may reduce efficacy and contribute to adverse effect liability. However, the M₁ PAM PF-06827443 was reported to have only weak agonist activity at human M₁ receptors but produced M₁-dependent adverse effects. We now report that PF-06827443 is an allosteric agonist in cell lines expressing rat, dog, and human M₁ and use of inducible cell lines shows that agonist activity of PF-06827443 is dependent on receptor

SUBMITTER: Moran SP 

PROVIDER: S-EPMC6146053 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature