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CGRP Receptor Signalling Pathways.

Graeme S Cottrell1

  • 1University of Reading, Reading, UK. g.s.cottrell@reading.ac.uk.

Handbook of Experimental Pharmacology
|August 29, 2018
PubMed
Summary
This summary is machine-generated.

Calcitonin gene-related peptide (CGRP) signaling involves a complex receptor system, including calcitonin receptor-like receptor (CLR) and RAMP1. Understanding CGRP receptor pathways is key to developing new migraine treatments.

Keywords:
Calcitonin gene-related peptideCalcitonin receptor-like receptorG proteinProtein kinaseReceptor activity-modifying proteinSignallingTrafficking

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Pharmacology

Background:

  • Calcitonin gene-related peptide (CGRP) is a peptide that interacts with multiple receptors, complicating research into its signaling pathways.
  • The CGRP receptor, while not a typical G protein-coupled receptor (GPCR), activates similar intracellular signaling cascades, including G proteins, kinases, and transcription factors.

Purpose of the Study:

  • To elucidate the molecular mechanisms and diverse signaling cascades of the CGRP receptor.
  • To investigate CGRP-mediated signaling in primary cells relevant to migraine pathophysiology.

Main Methods:

  • Focus on the calcitonin receptor-like receptor (CLR)/receptor activity-modifying protein 1 (RAMP1) complex as the CGRP receptor.
  • Analysis of receptor internalization, post-endocytic trafficking (recycling and degradation).
  • Examination of signaling pathways in model cell lines and primary cells (neurons, glial cells, vascular smooth muscle cells).

Main Results:

  • The CGRP receptor utilizes both cell-surface and post-endocytic trafficking pathways to elicit signaling.
  • Diverse signaling cascades are activated by the CGRP receptor in various cell types.
  • CGRP signaling is implicated in neurons, glial cells, and vascular smooth muscle cells relevant to migraine.

Conclusions:

  • Deciphering CGRP receptor signaling complexity is crucial for understanding its role in migraine.
  • This research may uncover novel therapeutic targets for migraine and other CGRP-related diseases.