A single-vector EYFP reporter gene assay for G protein-coupled receptors
2015
Hald, Helle | Wu, Boqian | Bouakaz, Lamine | Meldal, Morten
We here present an improved and simplified assay to study signal transduction of the Gs class of G protein-coupled receptors (GPCRs). The assay is based on a single plasmid combining the genes for any Gs protein-coupled GPCR and the cAMP response element-related expression of enhanced yellow fluorescent protein. On transfection, stable human embryonic kidney 293 (HEK293) cell lines presented high assay sensitivity and an unprecedented signal-to-noise ratio of up to 300, even in the absence of trichostatin A. The robustness of the assay was demonstrated through the cloning of reporter gene cell lines with melanocortin 4 receptor (MC4R), the human type I pituitary adenylate cyclase-activating polypeptide receptor (hPAC1), and the two vasoactive intestinal peptide receptors (VPAC1 and VPAC2).
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