Related Experiment Video
Updated: Feb 14, 2026

Quantifying Agonist Activity at G Protein-coupled Receptors
Published on: December 26, 2011
The Role of G Protein-coupled Receptor Kinases in Cancer
Shan Yu1, Litao Sun2, Yufei Jiao3
1Centre of Reproduction Development and Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau.
Abstract:
G protein-coupled receptors (GPCRs) are the largest family of plasma membrane receptors. Emerging evidence demonstrates that signaling through GPCRs affects numerous aspects of cancer biology such as vascular remolding, invasion, and migration. Therefore, development of GPCR-targeted drugs could provide a new therapeutic strategy to treating a variety of cancers. G protein-coupled receptor kinases (GRKs) modulate GPCR signaling by interacting with the ligand-activated GPCR and phosphorylating its intracellular domain. This phosphorylation initiates receptor desensitization and internalization, which inhibits downstream signaling pathways related to cancer progression. GRKs can also regulate non-GPCR substrates, resulting in the modulation of a different set of pathophysiological pathways. In this review, we will discuss the role of GRKs in modulating cell signaling and cancer progression, as well as the therapeutic potential of targeting GRKs.
Insights
G protein-coupled receptor kinases (GRKs) regulate cancer progression by modulating G protein-coupled receptor (GPCR) signaling and other pathways. Targeting GRKs offers a promising new therapeutic strategy for various cancers.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- G protein-coupled receptors (GPCRs) are crucial plasma membrane receptors involved in cancer biology.
- GPCR signaling influences cancer aspects like vascular remodeling, invasion, and migration.
- GPCR-targeted drugs represent a potential therapeutic strategy for diverse cancers.
Purpose of the Study:
- To review the role of G protein-coupled receptor kinases (GRKs) in cell signaling.
- To elucidate the involvement of GRKs in cancer progression.
- To discuss the therapeutic potential of targeting GRKs in cancer treatment.
Main Methods:
- Literature review of studies on GPCRs and GRKs in cancer.
- Analysis of GRK mechanisms in modulating GPCR and non-GPCR signaling pathways.
- Evaluation of therapeutic strategies targeting GRKs.
Main Results:
- GRKs modulate GPCR signaling via phosphorylation, leading to desensitization and internalization.
- This process inhibits downstream signaling pathways critical for cancer progression.
- GRKs also regulate non-GPCR substrates, impacting other pathophysiological pathways relevant to cancer.
Conclusions:
- GRKs play a significant role in regulating cell signaling and cancer progression.
- Targeting GRKs presents a viable therapeutic approach for developing novel anti-cancer drugs.
Related Concept Videos
G-protein Coupled Receptors
Protein Kinases and Phosphatases
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Protein Kinases and Phosphatases
G Protein-coupled Receptors
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
Receptor Tyrosine Kinases
Transducer Mechanism: G Protein–Coupled Receptors
GPCRs are also called heptahelical,...

