%0 Journal Article %T Measurement of Intracellular Ca2+ for Studying GPCR-Mediated Lipid Signaling. %A Chang Y %A Yi JY %A Brotto M %A Pan Z %J Methods Mol Biol %V 2816 %N 0 %D 2024 %M 38977589 暂无%R 10.1007/978-1-0716-3902-3_7 %X Intracellular Ca2+ can be conveniently monitored by sensitive Ca2+ fluorescent dyes in live cells. The Gαq involved lipid signaling pathways and, thus, can be studied by intracellular Ca2+ imaging. Here we describe the protocols to measure intracellular Ca2+ for studying PEG2-EP1 activity in esophageal smooth muscle cells. The ratiometric Fura-2 imaging provides quantitative data, and the Fluo-4 confocal microscopic imaging has high-spatial resolution.