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Minireview: Spatial Programming of G Protein-Coupled Receptor Activity: Decoding Signaling in Health and Disease
Camilla West1, Aylin C Hanyaloglu1
1Institute of Reproductive Biology and Development, Department of Surgery and Cancer, Imperial College London, London, W12 0NN, United Kingdom.
Abstract:
Probing the multiplicity of hormone signaling via G protein-coupled receptors (GPCRs) has demonstrated the complex signal pathways that underlie the multiple functions these receptors play in vivo. This is highly pertinent for the GPCRs key in reproduction and pregnancy that are exposed to cyclical and dynamic changes in their extracellular milieu. How such functional pleiotropy in GPCR signaling is translated to specific downstream cellular responses, however, is largely unknown. Emerging data strongly support mechanisms for a central role of receptor location in signal regulation via membrane trafficking. In this review, we discuss current progress in our understanding of the role membrane trafficking plays in location control of GPCR signaling, from organized plasma membrane signaling microdomains, potentially provided by both distinct endocytic and exocytic pathways, to more recent evidence for spatial control within the endomembrane system. Application of these emerging mechanisms in their relevance to GPCR activity in physiological and pathophysiological conditions will also be discussed, and in improving therapeutic strategies that exploits these mechanisms in order to program highly regulated and distinct signaling profiles.
Insights
G protein-coupled receptors (GPCRs) use membrane trafficking to control signaling location and cellular responses. This review explores how receptor trafficking regulates GPCRs in reproduction and pregnancy for therapeutic potential.
Area of Science:
- Endocrinology
- Cell Biology
- Pharmacology
Background:
- G protein-coupled receptors (GPCRs) mediate diverse physiological functions through complex signaling pathways.
- GPCRs crucial for reproduction and pregnancy face dynamic extracellular environments.
- Understanding how GPCRs achieve functional pleiotropy in cellular responses is critical.
Purpose of the Study:
- To review the role of membrane trafficking in regulating GPCR signaling location.
- To explore spatial control of GPCRs within the endomembrane system and plasma membrane.
- To discuss the relevance of these mechanisms in physiological and pathophysiological conditions.
Main Methods:
- Review of current literature on GPCRs, membrane trafficking, and signaling.
- Analysis of mechanisms controlling GPCR location via endocytic and exocytic pathways.
- Examination of evidence for spatial regulation within the endomembrane system.
Main Results:
- Membrane trafficking is central to regulating GPCR signal location and downstream responses.
- GPCRs are organized within plasma membrane microdomains, influenced by trafficking pathways.
- Spatial control of GPCRs extends to the endomembrane system, impacting signaling.
Conclusions:
- Membrane trafficking provides a key mechanism for functional pleiotropy in GPCR signaling.
- Understanding GPCR trafficking is crucial for comprehending reproductive and pregnancy physiology.
- Targeting GPCR trafficking offers potential for developing novel therapeutic strategies.
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