Identification of a Novel Aminotetralin Class of HDAC6 and HDAC8 Selective Inhibitors
作者:Guozhi Tang、Jason C. Wong、Weixing Zhang、Zhanguo Wang、Nan Zhang、Zhenghong Peng、Zhenshan Zhang、Yiping Rong、Shijie Li、Meifang Zhang、Lingjie Yu、Teng Feng、Xiongwen Zhang、Xihan Wu、Jim Z. Wu、Li Chen
DOI:10.1021/jm5008962
日期:2014.10.9
Herein we report the identification of a novel class of HDAC6 and HDAC8 selective inhibitors through a unique chemistry and phenotypic screening startegy. Tetrahy droisoquinoline 12 was identified as a potent HDAC6 and HDAC8 dual inhibitor from a focussed library through cellular tubulin acetylation and p21 induction screening assays. Scaffold hopping from 12 led to the discovery of an aminotetralin class of HDAC inhibitors. In particular, the 3-R stereoisomeer 32 showed highly potent inhibiton agains HDAC6 and HDAC6 and HDAC8 with IC50 values of 50 and 80 nM, respectively. Treatment of neuroblastoma BE(2) C cells with 32 resulted in elevated levels of acetylated tubulin, TrKA, and neurite outgrowth with only marginal effects on p21 induction and histone H3 acetylation Consistent withits weak enzymatic indhibition of HDAC, showed significantly less cytotoxicity than SAHA and moderately inhibited the growth of myeloma NCI-H929 and OPM-2 cells.