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Updated: Dec 27, 2025

A Kinetic Fluorescence-based Ca2+ Mobilization Assay to Identify G Protein-coupled Receptor Agonists, Antagonists, and Allosteric Modulators
Published on: February 20, 2018
Targeting G protein-coupled receptors in cancer therapy
Surinder M Soond1, Andrey A Zamyatnin2
1Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, Russian Federation.
Abstract:
As basic research into GPCR signaling and its association with disease has come into fruition, greater clarity has emerged with regards to how these receptors may be amenable to therapeutic intervention. As a diverse group of receptor proteins, which regulate a variety of intracellular signaling pathways, research in this area has been slow to yield tangible therapeutic agents for the treatment of a number of diseases including cancer. However, recently such research has gained momentum based on a series of studies that have sought to define GPCR proteins dynamics through the elucidation of their crystal structures. In this chapter, we define the approaches that have been adopted in developing better therapeutics directed against the specific parts of the receptor proteins, such as the extracellular and the intracellular domains, including the ligands and auxiliary proteins that bind them. Finally, we also briefly outline how GPCR-derived signaling transduction pathways hold great potential as additional targets.
Insights
Research into G protein-coupled receptors (GPCRs) is yielding new therapeutic strategies. Elucidating GPCR crystal structures is accelerating the development of drugs targeting these key signaling proteins for various diseases.
Area of Science:
- Pharmacology
- Molecular Biology
- Biochemistry
Background:
- G protein-coupled receptors (GPCRs) are crucial cell surface receptors involved in numerous physiological processes.
- Dysregulation of GPCR signaling is implicated in various diseases, including cancer.
- Therapeutic intervention targeting GPCRs has been challenging due to their complexity.
Purpose of the Study:
- To review recent advancements in developing therapeutics targeting GPCRs.
- To highlight the role of GPCR structural biology in drug discovery.
- To explore strategies for targeting specific GPCR domains and associated molecules.
Main Methods:
- Elucidation of GPCR crystal structures to understand protein dynamics.
- Development of therapeutics targeting extracellular and intracellular domains.
- Investigation of ligands and auxiliary proteins interacting with GPCRs.
Main Results:
- Recent studies defining GPCR protein dynamics through crystal structure elucidation have gained momentum.
- This structural information facilitates the design of targeted therapeutics.
- GPCR-derived signaling pathways are emerging as important therapeutic targets.
Conclusions:
- Structural insights into GPCRs are crucial for developing effective therapeutics.
- Targeting specific receptor domains and associated molecules offers promising therapeutic avenues.
- GPCR signaling pathways represent a significant, largely untapped resource for drug development.
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