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Tachykinin receptor types: Classification and membrane signalling mechanisms
1University Department of Pharmacology, South Parks Road, Oxford OX1 3QT, U.K.
Neurochemistry International
|May 28, 2010
Summary
Selective agonists and antagonists confirm three main tachykinin receptors (NK(1), NK(2), NK(3)). Research focuses on the NK(3) receptor, a G protein-coupled receptor involved in cell signaling.
Area of Science:
- Pharmacology
- Molecular Biology
- Cell Signaling
Background:
- Evidence supports three main tachykinin receptors: NK(1), NK(2), and NK(3).
- Preliminary data suggest additional receptor subtypes may exist.
- These receptors are part of the G protein-coupled receptor superfamily.
Purpose of the Study:
- To review recent pharmacological developments for tachykinin receptors.
- To emphasize the role and characteristics of the NK(3) receptor.
- To highlight the importance of selective agents in receptor identification.
Main Methods:
- Utilized selective agonists and antagonists in binding and functional studies.
- Confirmed receptor existence through cDNA sequencing and cloning.
- Investigated the phosphoinositide transmembrane-signaling pathway.
Main Results:
- Unequivocal evidence for NK(1), NK(2), and NK(3) receptor types.
- Identification and cloning of three distinct cDNA sequences corresponding to these receptors.
- All identified receptors link to the phosphoinositide signaling pathway.
Conclusions:
- Selective agonists and antagonists are crucial for distinguishing tachykinin receptor subtypes.
- The NK(3) receptor warrants further pharmacological investigation.
- Understanding these receptors is key to their therapeutic targeting.
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