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Updated: Mar 26, 2026

A Kinetic Fluorescence-based Ca2+ Mobilization Assay to Identify G Protein-coupled Receptor Agonists, Antagonists, and Allosteric Modulators
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A Kinetic Fluorescence-based Ca2+ Mobilization Assay to Identify G Protein-coupled Receptor Agonists, Antagonists, and Allosteric Modulators

Published on: February 20, 2018

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"Canonical and non-canonical actions of GRK5 in the heart"

Christopher J Traynham1, Jonathan Hullmann2, Walter J Koch1

  • 1Center for Translational Medicine, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA 19140, United States.

Journal of Molecular and Cellular Cardiology
|February 2, 2016
PubMed

Insights

Heart failure (HF) is rising with increased lifespan. This review focuses on G protein-coupled receptor kinase 5 (GRK5) in heart failure, exploring its role and potential therapies.

Area of Science:

  • Cardiovascular Biology
  • Molecular Cardiology
  • Pharmacology

Background:

  • Increasing global lifespan correlates with a rise in heart failure (HF) incidence and severity.
  • G protein-coupled receptors (GPCRs) are crucial for cardiovascular regulation, and their activity is modulated by GPCR kinases (GRKs).
  • GRKs, particularly GRK2 and GRK5, are highly expressed in the heart and implicated in HF pathophysiology, with GRK5's role recently gaining attention.

Purpose of the Study:

  • To review the role of GRK5 in normal cardiac physiology.
  • To elucidate the critical involvement of GRK5 in the progression of heart failure.
  • To discuss potential therapeutic strategies targeting GRK5 for HF treatment.

Main Methods:

  • Literature review focusing on GRK5 in cardiac pathophysiology.
  • Analysis of studies investigating GRK5 expression and function in normal and failing hearts.
  • Exploration of emerging therapeutic approaches, including small molecule inhibitors and gene therapy.

Main Results:

  • GRK5 plays a significant role in the myocardium.
  • Evidence suggests GRK5 is critically involved in the progression of heart failure.
  • Emerging therapeutic strategies targeting GRK5 show promise for combating HF.

Conclusions:

  • GRK5 is a key player in cardiac pathophysiology and heart failure progression.
  • Targeting GRK5 offers a potential therapeutic avenue for managing heart failure.
  • Further research into GRK5 inhibition and gene therapy is warranted for HF treatment.

Keywords:
G protein-coupled receptorHeart failureHypertrophyMyocardium

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