Calcium Flux Assay

HTS015C - ChemiSCREEN™ Human CX3CR1 Receptor Calcium-Optimized Stable Cell Line

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HTS015C
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    CX3CR1 is a GPCR expressed on natural killer cells, cytotoxic T lymphocytes, and macrophages. The sole ligand for CX3CR1, fractalkine, is an unusual chemokine that is expressed as a transmembrane molecule with a CX3C domain and a mucin domain (Imai et al., 1997). Fractalkine is highly expressed on endothelial cells activated by TNFα and other proinflammatory cytokines, and fractalkine/CX3CR1 interactions mediate recruitment of macrophages into the atherosclerotic plaque (Lesnick et al., 2003; McDermott et al., 2003). In addition, fractalkine and CX3CR1 have been implicated in the pathogenesis of glomerulonephritis, HIV infection and rheumatoid arthritis (Ito et al., 2002; Faure et al., 2003; Nanki et al., 2002). The cloned human CX3CR1 –expressing cell line is made in the Chem-4 host, which supports high levels of recombinant CX3CR1 expression on the cell surface and contains high levels of promiscuous G proteins to couple the receptor to the calcium signaling pathway. Thus, the cell line is an ideal tool for screening for antagonists of interactions between CX3CR1 and its ligands.

    Additional Resource :  HTS015C050615 Datasheet

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    Contents: 2 vials of mycoplasma-free cells, 1 ml per vial.
    Storage: Vials are to be stored in liquid N2.
    Applications: Calcium Flux Assay
    Host Cell: Chem-4, an adherent cell line expressing the promiscuous G-protein, Gα15.
    Exongenous Gene Expression: Human CX3CR1 cDNA (Accession Number: U28934) and promiscuous G protein are expressed in a bicistronic vector
    GMO: This product contains genetically modified organisms.
    Reference 1: 1. Faure S. et al. (2003) Deleterious genetic influence of CX3CR1 genotypes on HIV-1 disease progression. J Acquir. Immune Defic. Syndr. 32: 335-7 .
    Reference 2: 2. Imai T. et al. (1997) Identification and molecular characterization of fractalkine receptor CX3CR1, which mediates both leukocyte migration and adhesion. Cell 91: 521-30.
    Reference 3: 3. Ito Y. et al. (2002) Fractalkine expression and the recruitment of CX3CR1+ cells in the prolonged mesangial proliferative glomerulonephritis. Kidney Int. 61: 2044-57.
    Reference 4: 4. Lesnick P. et al. (2003) Decreased atherosclerosis in CX3CR1-/- mice reveals a role for fractalkine in atherogenesis. J. Clin. Invest. 111: 333-40.
    Reference 5: 5. McDermott D.H. et al. (2003) Chemokine receptor mutant CX3CR1-M280 has impaired adhesive function and correlates with protection from cardiovascular disease in humans. J. Clin. Invest. 111: 1241-50.
    Reference 6: 6. Nanki T. et al. (2002) Migration of CX3CR1-positive T cells producing type 1 cytokines and cytotoxic molecules into the synovium of patients with rheumatoid arthritis. Arthritis Rheum. 46: 2878-83.
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