8-bromo-cyclic adp-ribose

Cyclic ADP-ribose (cADP-ribose) is a calcium mobilizing nucleotide that is biosynthesized from NAD+ by cADP-ribose synthases, including CD38. cADP-Ribose appears to activate calcium channels in intracellular membranes, which in turn activate ryanodine receptors. 8-bromo-cADP-Ribose is a stable, cell-permeable analog that blocks calcium release evoked by cADP-ribose in sea urchin egg homogenates with an IC50 value of 1.7 μM. It is commonly used to investigate intracellular signaling through cADP-ribose in isolated cells and tissues.

8-Br-cADPR为cADPR的高效拮抗剂,能有效减轻肾损伤并降低caspase-3与TRPM2的表达水平.

8-bromo NAD+ 作为循环ADP-核糖（cADPR）抑制剂8-bromo cADPR的前药形式，通过CD38转化为8-bromo-cADPR。在1 mM浓度下，8-bromo NAD+ 阻止由N-formyl-Met-Leu-Phe (fMLP) 在分离的小鼠骨髓衍生的中性粒细胞内引起的细胞内钙水平增加和趋化作用。同时，在100 µM浓度下使用，减少了小鼠原代小胶质细胞中LPS诱导的亚硝酸盐产生以及TNF-α和IL-2的分泌。

8-Br-7-CH-cADPR (7-Deaza-8-bromo-cADPR) 是一种cADPR有效拮抗剂。该化合物能部分抑制sTIR二聚化引发的钙离子升高。此外，8-Br-7-CH-cADPR 对于降低紫杉醇诱导的轴突变性也有显著效果。