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Updated: Dec 30, 2025
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A Kinetic Fluorescence-based Ca2+ Mobilization Assay to Identify G Protein-coupled Receptor Agonists, Antagonists, and Allosteric Modulators
Published on: February 20, 2018
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Exploring functional consequences of GPCR oligomerization requires a different lens
Kyla Bourque1, Jace Jones-Tabah1, Dominic Devost1
1Department of Pharmacology and Therapeutics, McGill University, Montréal, QC, Canada.
Progress in Molecular Biology and Translational Science
|January 19, 2020
Summary
G protein-coupled receptors (GPCRs) form complexes that impact disease and drug development. New methods are needed to understand how these receptor interactions influence cell signaling and therapeutic outcomes.
Area of Science:
- Biochemistry
- Molecular Biology
- Pharmacology
Background:
- G protein-coupled receptors (GPCRs) are a major class of drug targets due to their critical roles in cell signaling.
- Understanding GPCR signaling complexes is vital for developing effective treatments for various human diseases.
- GPCRs can form homo- and heterooligomeric complexes, influencing their signaling outcomes.
Purpose of the Study:
- To review methods for identifying GPCR dimer partners.
- To discuss techniques for studying the functional consequences of GPCR complex formation.
- To highlight the need for new tools to understand allosteric co-regulation in GPCRs.
Main Methods:
- Literature review of experimental approaches to study GPCR signaling.
- Discussion of methods for identifying GPCR dimer partners.
- Exploration of techniques to study functional consequences of GPCR oligomerization.
- Case study using the FlAsH-BRET approach for FP/AT1R heterodimers.
Main Results:
- GPCR oligomerization significantly impacts signaling pathways and therapeutic potential.
- Existing methods for studying GPCR complexes have limitations.
- The FlAsH-BRET approach shows promise for elucidating allosteric transmission in GPCR complexes.
Conclusions:
- New tools are required to fully understand the physiological relevance of GPCR oligomers.
- Elucidating allosteric co-regulation mechanisms in GPCRs is crucial for drug discovery.
- The FlAsH-BRET approach offers a potential solution for studying GPCR complex dynamics and deorphanizing receptors.
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