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ID: ALA4177694
Journal: Bioorg Med Chem Lett
Title: Discovery of the first low-shift positive allosteric modulators for the muscarinic M1 receptor.
Authors: Flohr A, Hutter R, Mueller B, Bohnert C, Pellisson M, Schaffhauser H.
Abstract: Positive modulation of the muscarinic M1-receptor has for a long time attracted scientists and drug developers for the potential treatment of Alzheimer's disease or Schizophrenia. The precognitive potential of M1 activation has however not been clinically demonstrated as a result of side effects associated both with agonists and positive allosteric modulators (PAM's) of the M1-receptor. To avoid excessive activation of the M1-receptor we have designed a new screening format and developed the first low-shift positive allosteric modulators for the M1 receptor. Low-shift PAM's offer the potential of "use-dependent" attenuation of transmitter-signaling while avoiding pseudo-agonistic behavior in vivo as a common limitation of the so far described high-shift PAM's. With these novel M1-PAM's, the M1 receptor is potentially the first GPCR for which both, high- and low shift PAM's have become available.
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