Community guidelines for GPCR ligand bias: IUPHAR review 32

Area of Science:

• Pharmacology
• Molecular Biology
• Drug Discovery

Background:

• G protein-coupled receptors (GPCRs) are crucial physiological regulators and targets for one-third of FDA-approved drugs.
• GPCRs can engage different intracellular signaling pathways (biased signaling) depending on the activating ligand.
• Understanding ligand bias is essential for developing more effective drugs with fewer side effects.

Purpose of the Study:

• To provide clear guidelines and standardized terminology for designing and reporting ligand bias experiments.
• To enhance consistency and clarity in the field of GPCR research and drug discovery.
• To facilitate the translation of findings from in vitro studies to in vivo models.

Main Methods:

• Development of standardized experimental design principles for ligand bias studies.
• Establishment of clear terminology for describing biased signaling phenomena.
• Integration of scientific insights, biosensors, and analytical methods.

Main Results:

• A framework for consistent and reproducible characterization of ligand-GPCR interactions.
• Improved understanding of biased signaling for targeted drug development.
• Guidelines to aid researchers in designing and reporting experiments.

Conclusions:

• Standardized guidelines are crucial for advancing the understanding and application of ligand bias in GPCR research.
• Consistent reporting of ligand bias experiments will improve reproducibility and accelerate drug discovery.
• The proposed guidelines will foster collaboration and enhance the translation of research findings.