HTS017C - ChemiSCREEN™ Human C5aR Anaphylotoxin Receptor Calcium-Optimized Stable Cell Line

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HTS017C
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    C5a is a proinflammatory peptide generated through activation of the complement system, and is more potent than the other anaphylatoxins, C4a and C3a, in activating peripheral blood leukocytes (Gerard and Gerard, 1994).  It can actively participate in the regulation of local cytokine network by stimulating production of proinflammatory cytokines (Buchner et al., 1995; Hsu et al., 1999).  The proinflammatory effects of C5a are mediated through binding to a specific 7-TM chemoattractant receptor, C5aR (CD88).  Binding of C5a to phagocyte C5aR induces chemotaxis, production of superoxide anions, and release of degradative enzymes.  Pharmacologic or genetic disruption of C5a/C5aR interaction reduces sepsis (Riedemann et al., 2003), immune complex-induced lung disease (Shushakova et al., 2002), and Arthrogen-induced arthritis (Grant et al., 2002) in experimental models.  The cloned human C5a receptor-expressing cell line is made in the Chem-1 host, which supports high levels of recombinant C5aR expression on the cell surface and contains high levels of the promiscuous G protein Gα15 to couple the receptor to the calcium signaling pathway.  Thus, the cell line is an ideal tool for screening for antagonists of C5a/C5aR interactions.

    Additional Resource :  HTS017C050515 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-1, an adherent cell line expressing the promiscuous G-protein, Gα15.
    Exongenous Gene Expression: Human C5aR cDNA (Accession Number: M62505) and promiscuous G protein are expressed in a bicistronic vector
    GMO: This product contains genetically modified organisms.
    Reference 1: 1. Buchner RR, et al. (1995) Expression of functional receptors for human C5a anaphylatoxin (CD88) on the human hepatocellular carcinoma cell line HepG2. Stimulation of acute-phase protein-specific mRNA and protein synthesis by human C5a anaphylatoxi
    Reference 2: 2. Gerard C, Gerard NP. (1994) C5A anaphylatoxin and its seven transmembrane-segment receptor. Annu.Rev.Immunol. 12: 775-808.
    Reference 3: 3. Grant, EP, et al. (2002) Essential role for the C5a receptor in regulating the effector phase of synovial infiltration and joint destruction in experimental arthritis. J. Exp. Med. 196: 1461-1471.
    Reference 4: 4. Hsu, M.H., et al. (1999) NF-kappaB activation is required for C5a-induced interleukin-8 gene expression in mononuclear cells. Blood 93: 3241-3249.
    Reference 5: 5. Riedemann, NC, et al. (2003) A key role of C5a/C5aR activation for the development of sepsis. J. Leukoc. Biol. 74: 966-970.
    Reference 6: 6. Shushakova, N, et al. (2002) C5a anaphylatoxin is a major regulator of activating versus inhibitory FcgammaRs in immune complex-induced lung disease. J. Clin. Invest. 110: 1823-30.
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