4-Indolyl- N -hydroxyphenylacrylamides as potent HDAC class I and IIB inhibitors in vitro and in vivo
作者:Samir Mehndiratta、Ruei-Shian Wang、Han-Li Huang、Chih-Jou Su、Chia-Ming Hsu、Yi-Wen Wu、Shiow-Lin Pan、Jing-Ping Liou
DOI:10.1016/j.ejmech.2017.03.079
日期:2017.7
A series of 4,5-indolyl-N-hydroxyphenylacrylamides, as HDAC inhibitors, has been synthesized and evaluated in vitro and in vivo. 4-Indolyl compounds 13 and 17 functions as potent inhibitors of HDAC1 (IC50 1.28 nM and 134 nM) and HDAC 2 (IC50 0.90 and 0.53 nM). N-Hydroxy-3-4-[2-(1H-indo1-4-y1)-ethylsulfamoyl]-phenyl}-actylamide (13) inhibited the human cancer cell growth of PC3, A549, MDA-MB-231 and AsPC-1 with a GI(50) of 0.14, 0.25, 0.32, and 0.24 mu M, respectively. In in vivo evaluations bearing prostate PC3 xenografts nude mice model, compound 13 suppressed tumor growth with a tumor growth inhibition (TGI) of 62.2%. Immunohistochemistry of protein expressions, in PC-3 xenograft model indicated elevated acetyl-histone 3 and prominently inhibited HDAC2 protein expressions. Therefore, compound 13 could be a suitable lead for further investigation and the development of selective HDAC 2 inhibitors as potent anti-cancer compounds. (C) 2017 Elsevier Masson SAS. All rights reserved.