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Updated: May 10, 2026

Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients
Published on: November 19, 2019
RGS17: an emerging therapeutic target for lung and prostate cancers
Christopher R Bodle1, Duncan I Mackie, David L Roman
1The Department of Pharmaceutical Sciences & Experimental Therapeutics, University of Iowa, College of Pharmacy, Iowa City, IA, USA.
Abstract:
Ligands for G-protein-coupled receptors (GPCRs) represent approximately 50% of currently marketed drugs. RGS proteins modulate heterotrimeric G proteins and, thus, GPCR signaling, by accelerating the intrinsic GTPase activity of the Gα subunit. Given the prevalence of GPCR targeted therapeutics and the role RGS proteins play in G protein signaling, some RGS proteins are emerging as targets in their own right. One such RGS protein is RGS17. Increased RGS17 expression in some prostate and lung cancers has been demonstrated to support cancer progression, while reduced expression of RGS17 can lead to development of chemotherapeutic resistance in ovarian cancer. High-throughput screening is a powerful tool for lead compound identification, and utilization of high-throughput technologies has led to the discovery of several RGS inhibitors, thus far. As screening technologies advance, the identification of novel lead compounds the subsequent development of targeted therapeutics appears promising.
Insights
Regulator of G protein signaling (RGS) proteins, like RGS17, are crucial in cell signaling and cancer. High-throughput screening is identifying RGS inhibitors for potential cancer therapeutics.
Area of Science:
- Pharmacology
- Molecular Biology
- Oncology
Background:
- G-protein-coupled receptors (GPCRs) are key drug targets, with ligands comprising ~50% of marketed drugs.
- Regulator of G protein signaling (RGS) proteins modulate GPCR signaling by regulating G protein activity.
- RGS proteins, including RGS17, are increasingly recognized as potential therapeutic targets due to their roles in disease.
Purpose of the Study:
- To highlight the significance of RGS proteins, particularly RGS17, as therapeutic targets.
- To discuss the application of high-throughput screening in identifying RGS inhibitors.
- To underscore the potential for developing targeted therapeutics based on RGS modulation.
Main Methods:
- Review of existing literature on GPCRs, RGS proteins, and cancer biology.
- Discussion of high-throughput screening technologies for drug discovery.
- Analysis of RGS17's role in prostate, lung, and ovarian cancers.
Main Results:
- RGS17 expression is linked to cancer progression and chemotherapeutic resistance.
- High-throughput screening has successfully identified several RGS inhibitors.
- Advancements in screening technologies promise novel lead compound discovery.
Conclusions:
- RGS proteins represent promising targets for novel therapeutic strategies.
- Targeted inhibition of RGS proteins, like RGS17, could offer new treatment avenues for various cancers.
- Continued development of high-throughput screening will accelerate the discovery of RGS-targeted drugs.
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