hh (-)-Xestospongin C (CAS 88903-69-9): R&D Systems
Catalog Number: 1280
Alternate Names: XeC
Chemical Name: (1R,4aR,11R,12aS,13S,16aS,23R,24aS)-Eicosahydro-5H,17H-1,23:11,13-diethano-2H,14H-[1,11]dioxacycloeicosino[2,3-b:12,13-b']dipyridine
Biological Activity
Reported inhibitor of IP3-dependent Ca2+ release. Inhibits bradykinin-induced Ca2+ release in PC12 cells and attenuates PHP-induced IL-2 production in Jurkat T cells. Exhibits no effect on ryanodine receptor-mediated Ca2+ release in PC12 cells. Does not interact with the IP3 binding site. Recently shown to be an ineffective antagonist of IP3-evoked Ca2+ release in IP3 receptor expressing DT40 cells. Cell permeable.
Technical Data
  • M.Wt:
    446.71
  • Formula:
    C28H50N2O2
  • Solubility:
    Soluble to 2 mM in DMSO and to 2 mM in ethanol
  • Storage:
    Desiccate at -20°C
  • CAS No:
    88903-69-9
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis. All Tocris products are intended for laboratory research use only.
Background References
  1. Store-operated Ca2+ influx causes Ca2+ release from the intracellular Ca2+ channels that is required for T cell activation.
    Dadsetan et al.
    J.Biol.Chem., 2008;283:12512
  2. Xestospongins: potent membrane permeable blockers of the inositol 1,4,5-trisphosphate receptor.
    Gafni et al.
    Neuron, 1997;19:723
  3. Inhibitory mechanism of xestospongin-C on contraction and ion channels in the intestinal smooth muscle.
    Ozaki et al.
    Br.J.Pharmacol., 2002;137:1207
  4. Interactions of antagonists with subtypes of inositol 1,4,5-trisphosphate (IP3) receptor.
    Saleem et al.
    Br.J.Pharmacol., 2014;171:3298

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