About the Elite™ Calcium Dye Non-Wash Assay Kit (Green Fluorescence)

Intracellular calcium (Ca²⁺) is a universal second messenger that regulates numerous cellular processes including GPCR signaling, ion channel activation, neurotransmitter release, muscle contraction, secretion, cell proliferation, and gene expression. Changes in intracellular calcium concentration occur rapidly following activation of G protein-coupled receptors (GPCRs), receptor tyrosine kinases, and ligand- or voltage-gated ion channels. Because calcium mobilization represents one of the most widely used functional readouts in cell signaling research, calcium flux assays have become essential tools for receptor pharmacology, drug discovery, and high-throughput screening applications.

eEnzyme's Elite™ Calcium Dye Non-Wash Assay Kit (Green Fluorescence) provides a homogeneous, fluorescence-based method for monitoring intracellular calcium mobilization in live cells. The assay utilizes a calcium-sensitive fluorescent dye that responds rapidly to changes in intracellular calcium levels following receptor activation. The non-wash format eliminates washing steps, reduces assay variability, simplifies workflow, and improves compatibility with automated screening platforms. This convenient assay format enables sensitive detection of calcium responses induced by GPCRs, calcium channels, and other signaling pathways that regulate intracellular calcium flux.

The Elite™ Calcium Dye Non-Wash Assay Kit is optimized for use with fluorescence plate readers, FLIPR®, FlexStation®, FDSS, and other kinetic fluorescence detection systems. The assay can be performed in 96-well or 384-well microplate formats and is readily adaptable to automation and high-throughput screening workflows. Its robust performance makes it an ideal tool for GPCR functional studies, receptor deorphanization, ion channel research, compound screening, and signal transduction investigations.

Applications of the Calcium Dye Non-Wash Assay Kit

• GPCR signaling and receptor pharmacology studies
• Intracellular calcium mobilization assays
• Agonist and antagonist screening
• Ion channel activation and inhibition studies
• Drug discovery and high-throughput screening
• Signal transduction and pathway analysis
• Compound potency and efficacy determination
• Functional characterization of Gq-coupled receptors and calcium channels

Biological Significance of Calcium Signaling

Calcium ions function as critical intracellular signaling molecules that regulate diverse physiological and cellular processes. Activation of many GPCRs and ion channels triggers rapid release of calcium from intracellular stores or influx of extracellular calcium into the cytoplasm, initiating downstream signaling cascades that control secretion, contraction, metabolism, transcription, proliferation, and cell survival. Because alterations in calcium signaling are associated with cardiovascular disease, neurological disorders, immune dysfunction, cancer, and metabolic diseases, calcium mobilization assays are widely used to investigate disease mechanisms and identify novel therapeutic candidates. The speed, sensitivity, and compatibility of calcium flux measurements with automated screening platforms have made calcium assays one of the most commonly used technologies for GPCR drug discovery and functional receptor characterization.