Calcium Flux Assay

HTS028C - ChemiSCREEN™ Human Recombinant sst2 Somatostatin Receptor Calcium-Optimized Stable Cell Line

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HTS028C
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  • Product Description

    Somatostatin (sst) is a multifunctional peptide with two biologically active forms, sst-14 and sst-28, which are synthesized in neurons throughout the brain as well as in peripheral tissues such as the pancreas and the gut (Gillies, 1997). SST exerts a diverse array of effects that include inhibition of endocrine secretion, modulation of neurotransmission, and regulation of cell proliferation by stimulating a family of five G-protein-coupled receptors. Somatostatin receptor sst2 mRNA is predominantly expressed in central nervous system. Study using sst2 knock-out mice has found the increased anxiety-related behaviour while locomotor and exploratory activity was decreased in stress-inducing situations (coupled with an increase in pituitary ACTH release, a regulator of the stress response) (Viollet et al., 2000) . In the periphery, inhibition of glucagon release by sst in mouse islets is primarily mediated via sst2 (Strowski et al., 2000).  In addition, endogenous sst functions through sst2 to suppress gastric acid secretion through inhibition of gastrin activity (Martinez et al., 1998).  The cloned human sst2-expressing cell line is made in the Chem-1 host, which supports high levels of recombinant sst2 expression on the cell surface and contains optimal levels of the promiscuous G protein to couple the receptor to the calcium signaling pathway.  Thus, the cell line is an ideal tool for screening for antagonists of interactions between sst2 and its ligands.  

    Additional Resource :  HTS028C060515 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 sst2 cDNA (Accession Number: NM_001050.2) and promiscuous G protein are expressed in a bicistronic vector
    GMO: This product contains genetically modified organisms.
    Reference 1: 1. Gillies G (1997) Somatostatin: the neuroendocrine story. Trends Pharmacol. Sci. 18: 87-95.
    Reference 2: 2. Martinez V et al. (1998) High basal gastric acid secretion in somatostatin receptor subtype 2 knockout mice. Gastroenterology 114: 1125 – 1132.
    Reference 3: 3. Strowski MZ et al. (2000) Somatostatin inhibits insulin and glucagon secretion via two receptors subtypes: an in vitro study of pancreatic islets from somatostatin receptor 2 knockout mice. Endocrinology 141: 111 – 117.
    Reference 4: 4. Viollet C et al. (2000) Involvement of sst2 somatostatin receptor in locomotor, exploratory activity and emotional reactivity in mice Eur. J. Neurosci. 12: 3761 – 3770.
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