M4 Receptors

Supporting information

M4 receptors are members of the G-protein-coupled receptor (GPCR) family which are found mostly bound to Gi proteins, generally leading to inhibitory effects. They are one of five muscarinic receptors that act to control the metabotropic functions of acetylcholine in the CNS. M4 receptors are densely populated in the striatum and the lungs.

Activation of the M4 receptor leads to several responses, including the inhibition of adenylyl cyclase. One of the primary roles of M4 receptor activation is the indirect mediation of dopaminergic neurotransmission via its cholinergic activity. M4 activation has shown to inhibit D1-induced locomotor stimulation. Other functions of M4 receptor stimulation include wound healing and hair follicle cycling.

M4 receptors are involved in pathological processes including Parkinson's Disease, Alzheimer's Disease, and have also been implicated in several mood disorders including bipolar disorder and schizophrenia. The targeting of the M4 receptor has been suggested to have therapeutic potential for the treatment of these conditions.

To view external sources of pharmacological information for M4 Receptors, please click here: IUPHAR Receptor Code and BJP Guide

View all products for M4 Receptors »
Species Gene Symbol Gene Accession No. Protein Accession No.
Human CHRM4 NM_000741 P08173
Mouse Chrm4 NM_007699 P32211
Rat Chrm4 NM_031547 P08485

Literature for M4 Receptors

GPCR Product Listing

A collection of over 450 products for G protein-coupled receptors, the listing includes research tools for the study of:

  • Rhodopsin-like Receptors
  • Secretin-like Receptors
  • Glutamate Receptors
  • Frizzled Receptors
  • GPCR Signaling
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Alzheimer's Life Science Poster

Written by Alan Palmer and updated in 2015, this poster summarizes structural and functional changes observed in the progression of Alzheimer's disease (AD), as well as classic AD drug targets. The hypotheses behind the neurobiology of AD are discussed alongside the different stages in disease progression. Compounds available from Tocris are listed.

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Alzheimer's Life Science Poster
Cardiovascular Life Science Poster

Cardiovascular disease remains one of the major causes of morbidity and mortality in the Western world and therefore this therapeutic area continues to be of great interest to researchers. This poster highlights the key GPCRs regulating vascular reactivity.

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Cardiovascular Life Science Poster
Learning & Memory Life Science Poster

Written by E. Clea Warburton and Zafar Bashir, this poster outlines the cellular mechanisms underlying recognition memory and its links to long-term depression. The role of different neurotransmitters involved in recognition memory and synaptic plasticity are also summarized. Compounds available from Tocris are listed.

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Learning & Memory Life Science Poster
Schizophrenia Life Science Poster

Written by Jacob Ballon et al, this poster highlights key signaling pathways implicated in the development of schizophrenia, and the most promising strategies in novel drug development. Current research targets include cholinergic and glutamatergic signaling pathways, and the D2 receptor. Compounds available from Tocris are listed.

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Schizophrenia Life Science Poster

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GPCR Product Listing

GPCR Product Listing

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Alzheimer's Disease: Neurobiology and Drug Targets

Written by Alan Palmer

Alzheimer's Life Science Poster

Our Alzheimer's disease poster summarizes the structural and functional changes observed in the progression of this neurodegenerative disease. Request copy or view PDF today.

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Regulation of Vascular Reactivity by GPCRs

Written by J.J. Maguire and A.P. Davenport

Cardiovascular Life Science Poster

Our Cardiovascular poster highlights the key G protein-coupled receptors involved in the regulation of vascular reactivity. Request copy today.

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Therapeutic Strategies in Schizophrenia

Written by J. Lieberman

Schizophrenia Life Science Poster

Our Schizophrenia poster higlights the targets and pathways representing the most promising strategies to pursue for novel drug development. Request copy today.

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Learning and Memory

Written by Clea Warburton and Zafar Bashir

Learning & Memory Life Science Poster

Our Learning and Memory poster gives an overview of the cellular mechanisms underlying recognition memory and its links to long-term depression. Request copy or view PDF today.

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