Modulation of the M2 muscarinic acetylcholine receptor activity with monoclonal anti-M2 receptor antibody fragments.
Article Details
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Peter JC, Wallukat G, Tugler J, Maurice D, Roegel JC, Briand JP, Hoebeke J
Modulation of the M2 muscarinic acetylcholine receptor activity with monoclonal anti-M2 receptor antibody fragments.
J Biol Chem. 2004 Dec 31;279(53):55697-706. Epub 2004 Oct 14.
- PubMed ID
- 15485827 [ View in PubMed]
- Abstract
Antibodies directed against the second extracellular loop of G protein-coupled receptors are known to have functional activities. From a partial agonist monoclonal antibody directed against the M2 muscarinic receptor, we constructed and produced a single chain variable fragment with high affinity for its target epitope. The fragment is able to recognize its receptor on Chinese hamster ovary cells transfected with the M2 muscarinic acetylcholine receptor to block the effect of carbachol on this receptor and to exert an inverse agonist activity on the basal activity of the receptor. The antibody fragment is also able to increase the basal rhythm of cultured neonatal rat cardiomyocytes and to inhibit in a non-competitive manner the negative chronotropic effect of carbachol. This antibody fragment is able to exert its inverse agonist activity in vivo on mouse heart activity. The immunological strategy presented here could be useful to develop specific allosteric inverse agonist reagents for G protein-coupled receptors.
DrugBank Data that Cites this Article
- Drug Targets
Drug Target Kind Organism Pharmacological Action Actions Carbamoylcholine Muscarinic acetylcholine receptor M2 Protein Humans YesAgonistDetails