ArticleCommunications biology2022
A bead-based GPCR phosphorylation immunoassay for high-throughput ligand profiling and GRK inhibitor screening.
Article in Communications biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 15 citations in OpenAlex.
- Development of dual SSTRSC medicinal chemistry · 2026Article
- Cell-based and isoform-selective G protein-coupled receptor kinase assays for comprehensive inhibitor evaluation.Communications biology · 2026Article
- Helix-bundle and C-terminal GPCR domains differentially influence GRK-specific functions and β-arrestin-mediated regulation.Nature communications · 2025Article
- GPCR kinases phosphorylate GPCR C-terminal peptides in a hierarchical manner.Communications biology · 2025Article
- Key phosphorylation sites for robust β-arrestin2 binding at the MOR revisited.Communications biology · 2024Article
- Phosphorylation Sites of the Gastric Inhibitory Polypeptide Receptor (GIPR) Revealed by Trapped-Ion-Mobility Spectrometry Coupled to Time-of-Flight Mass Spectrometry (TIMS-TOF MS).Journal of the American Chemical Society · 2023Article
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Authors and funding
21 authors at 5 institutions in 2 countries.
Funding
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Abstract
Analysis of agonist-driven phosphorylation of G protein-coupled receptors (GPCRs) can provide valuable insights into the receptor activation state and ligand pharmacology. However, to date, assessment of GPCR phosphorylation using high-throughput applications has been challenging. We have developed and validated a bead-based immunoassay for the quantitative assessment of agonist-induced GPCR phosphorylation that can be performed entirely in multiwell cell culture plates. The assay involves immunoprecipitation of affinity-tagged receptors using magnetic beads followed by protein detection using phosphorylation state-specific and phosphorylation state-independent anti-GPCR antibodies. As proof of concept, five prototypical GPCRs (MOP, C5a1, D1, SST2, CB2) were treated with different agonizts and antagonists, and concentration-response curves were generated. We then extended our approach to establish selective cellular GPCR kinase (GRK) inhibitor assays, which led to the rapid identification of a selective GRK5/6 inhibitor (LDC8988) and a highly potent pan-GRK inhibitor (LDC9728). In conclusion, this versatile GPCR phosphorylation assay can be used extensively for ligand profiling and inhibitor screening.
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