Psammaplin A as a general activator of cell-based signaling assays via HDAC inhibition and studies on some bromotyrosine derivatives
作者:Malcolm W.B. McCulloch、Gary S. Coombs、Nikhil Banerjee、Tim S. Bugni、Kendell M. Cannon、Mary Kay Harper、Charles A. Veltri、David M. Virshup、Chris M. Ireland
DOI:10.1016/j.bmc.2008.10.077
日期:2009.3
an active compound from Pseudoceratina purpurea as psammaplin A, a known HDAC inhibitor. Other HDAC inhibitors similarly activated signaling in this assay, indicating HDAC inhibitors will be identified through many cell-based reporter assays. In a large scale analysis of P. purpurea, three previously undescribed bromotyrosine based natural products were identified; the structure of one of these was
Wnt 信号通路调节后生动物的细胞生长和发育,因此对药物发现很感兴趣。通过在基于细胞的 Wnt 信号分析中筛选 5808 种预分馏海洋提取物的文库,观察到了几种信号激活剂和抑制剂。基于 LCMS 的分级分离快速鉴定了来自Pseudoceratina purpurea的活性化合物psammaplin A,一种已知的 HDAC 抑制剂。其他 HDAC 抑制剂在该测定中类似地激活信号,表明 HDAC 抑制剂将通过许多基于细胞的报告基因测定进行鉴定。在P. purpurea 的大规模分析中,鉴定了三种以前未描述的基于溴酪氨酸的天然产物;其中之一的结构通过合成得到证实。此外,还制备了 psammaplin A 的三种其他衍生物:混合二硫化物和两种亚磺酸酯。最后,提供了支持 psammaplin I 从砜结构重新分配到异构亚磺酸酯的证据。