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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

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Towards tissue-specific pharmacology: insights from the calcium-sensing receptor as a paradigm for GPCR

Katie Leach1, Arthur D Conigrave2, Patrick M Sexton1

  • 1Monash Institute of Pharmaceutical Sciences, 381 Royal Parade, Parkville VIC, Australia.

Trends in Pharmacological Sciences
|March 14, 2015
PubMed

Insights

The calcium-sensing receptor (CaSR) exhibits biased signaling, where different ligands activate specific pathways. This phenomenon is crucial in disease and drug development for targeted CaSR therapies.

Area of Science:

  • Biochemistry
  • Pharmacology
  • Cellular Biology

Background:

  • The calcium-sensing receptor (CaSR), a G protein-coupled receptor (GPCR), plays diverse tissue-specific roles.
  • Precise control over CaSR signaling pathways is essential due to its multiple ligands and functions.

Purpose of the Study:

  • To review the concept of biased signaling in the context of the CaSR.
  • To explore the pathophysiological and therapeutic implications of CaSR biased signaling.

Main Methods:

  • Review of existing literature on CaSR signaling and biased agonism.
  • Analysis of how ligand-biased signaling affects CaSR function in health and disease.

Main Results:

  • The CaSR exhibits biased signaling with its endogenous ligands.
  • Disease states can alter the natural bias of the CaSR.
  • Small molecule drugs can induce biased allosteric modulation of CaSR signaling.

Conclusions:

  • Biased signaling is a critical paradigm for the CaSR, impacting disease and therapy.
  • The CaSR serves as a model for studying ligand-biased signaling in GPCRs.
  • Understanding CaSR biased signaling can lead to selective drug development for various tissues.
Keywords:
allosteric modulatorbiased signalingcalcilyticcalcimimetic

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