Functional diversification of cell signaling by GPCR localization
Matthew J Klauer1, Blair K A Willette1, Nikoleta G Tsvetanova1
1Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina, USA.
The Journal of Biological Chemistry
|January 25, 2024
Summary
G protein-coupled receptors (GPCRs), or seven transmembrane receptors, regulate physiology and are major drug targets. Emerging research shows GPCRs signal from intracellular compartments, influencing unique cellular outcomes.
Area of Science:
- Cellular Biology
- Pharmacology
- Physiology
Background:
- G protein-coupled receptors (GPCRs), also known as seven transmembrane receptors (7TMs), are the largest family of cell surface receptors.
- They are crucial regulators of mammalian physiology, detecting diverse stimuli like hormones and neurotransmitters.
- GPCRs represent a significant class of drug targets, accounting for over 30% of all prescription medications.
Purpose of the Study:
- To review the evolving understanding of G protein-coupled receptor (GPCR) signaling.
- To discuss the roles and regulation of compartmentalized GPCR signaling from intracellular compartments.
Main Methods:
- Literature review and synthesis of current research on GPCR signaling.
- Analysis of evidence supporting intracellular GPCR signaling pathways.
Main Results:
- The traditional view of GPCRs signaling exclusively from the cell surface is being updated.
- Accumulating evidence demonstrates that GPCRs can initiate signaling cascades from within intracellular compartments.
- Intracellular GPCR signaling contributes to unique cellular and physiological responses.
Conclusions:
- Compartmentalized GPCR signaling represents a critical layer of physiological regulation.
- Further research into intracellular GPCR signaling is essential for understanding complex biological processes.
- Targeting intracellular GPCR signaling may offer novel therapeutic strategies.
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