Millipore′s Ready-to-Assay GPCR frozen cells are designed for simple, rapid calcium assays with no requirement for intensive cell culturing. Millipore has optimized the freezing conditions to provide cells with high viability and functionality post-thaw. The user simply thaws the cells and resuspends them in media, dispenses cell suspension into assay plates and, following over night recovery, assays for calcium response.

The cysteinyl leukotrienes, leukotriene C4, leukotriene D4 and leukotriene E4, are arachidonic acid derivatives modified by glutathione, Cys-Gly or Cys. Activated mast cells release cysteinyl leukotrienes, which cause smooth muscle contraction, airway constriction, and vascular permeability. The biological effects of the cysteinyl leukotrienes are mediated by two GPCRs, CysLT1 and CysLT2. A CysLT1 selective antagonist, montelukast, is used clinically in the treatment of asthma (Brink et al., 2003; Evans, 2002). Chemicon′s cloned human CysLT1-expressing cell line is made in the Chem-1 host, which supports high levels of recombinant CysLT1 expression on the cell surface and contains high levels of the promiscuous G protein Galpha15 to couple the receptor to the calcium signaling pathway. Thus, the cell line is an ideal tool for screening for antagonists of interactions between CysLT1 and its ligands.

TRANSFECTION: Full-length human CYSLTR1 cDNA

Pack contains 2 vials of mycoplasma-free cells, 1 ml per vial. Fifty (50) mL of Media Component.

Place cells in liquid nitrogen immediately upon receipt.

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