Discovery of Selective Histone Deacetylase 6 Inhibitors Using the Quinazoline as the Cap for the Treatment of Cancer
摘要:
Novel selective histone deacetylase 6 (HDAC6) inhibitors using the quinazoline as the cap were designed, synthesized, and evaluated for HDAC enzymatic assays. N-Hydroxy-4-(2-methoxy-5-(methyl(2-methylquinazolin-4-yl)-amino)phenoxy)butanamide, 23bb, was the most potent selective inhibitor for HDAC6 with an IC50 of 17 nM and showed 25-fold and 200-fold selectivity relative to HDAC1 and HDAC8, respectively. In vitro, 23bb presented low nanomolar antiproliferative effects against panel of cancer cell lines. Western blot analysis further confirmed that 23bb increased acetylation level of a-tubulin in vitro. 23bb has a good pharmacokinetic profile with oral bioavailability of 47.0% in rats. In in vivo efficacy evaluations of colorectal HCT116, acute myelocytic leukemia MV4-11, and B cell lymphoma Romas xenografts, 23bb more effectively inhibited the tumor growth than SAI-IA even at a 4-fold reduced dose or ACY-1215 at the same dose. Our results indicated that 23bb is a potent oral anticancer candidate for selective HDAC6 inhibitor and deserves further investigation.
HISTONE DEACETYLASE INHIBITOR, AND PREPARATION METHOD AND USE THEREOF
申请人:GUANGDONG ZHONGSHENG PHARMACEUTICAL CO., LTD
公开号:US20180098990A1
公开(公告)日:2018-04-12
A compound represented by Formula I or pharmaceutically acceptable salt thereof. The present invention relates to a 4-arylamino quinazoline hydroxamic acid compound having a histone deacetylase inhibitory activity, preparation method of the compound, pharmaceutical composition comprising the compound, and use of the compound and the pharmaceutical composition in the preparation of a histone deacetylase inhibitor medicine. The present invention aims at acquiring, via a medicine design and a synthetic technology, a series of selective histone deacetylase inhibitors having good hypotype selectivity and favorable pharmacokinetic characteristics based on optimization of an enzyme surface recognition region and connection region of 4-arylamino quinazoline, thus reducing an effect on normal tissues or cells while improving an antineoplastic activity of the normal tissues or cells.
[EN] HISTONE DEACETYLASE INHIBITOR, AND PREPARATION METHOD AND USE THEREOF<br/>[FR] INHIBITEUR DE L'HISTONE DÉSACÉTYLASE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 一种组蛋白去乙酰化酶抑制剂及其制备方法和用途
Design, synthesis, and biological evaluation of quinazoline derivatives as dual HDAC1 and HDAC6 inhibitors for the treatment of cancer
作者:Jinying Chen、Zitai Sang、Youjun Jiang、Chao Yang、Linhong He
DOI:10.1111/cbdd.13405
日期:2019.3
AbstractFifty‐eight quinazoline‐based compounds were designed and synthesized based on the structural optimizations from the lead compound 23bb in an attempt to search for more potent dual HDAC1 and HDAC6 inhibitors. Among them, 32c (HDAC1, IC50 = 31.10 ± 0.37 nM; HDAC6, IC50 = 16.15 ± 0.62 nM) and 32d (HDAC1, IC50 = 37.00 ± 0.24 nM; HDAC6, IC50 = 35.00 ± 0.71 nM) were not only identified as potent dual‐acting HDAC1 and HDAC6 inhibitors with over 10‐fold selectivity to the other HDACs, but also displayed activities in tubulin acetylation and histone H3 acetylation induction. Importantly, both of them displayed strong antiproliferative activities against various tumor cell lines in vitro with IC50 values less than 40 nM, especially for hematologic tumors cells (U266 and RPMI8226, IC50 < 1 nM), which were even better than 23bb and SAHA. Furthermore, 32c showed a significant tumor growth inhibition (antitumor rate = 63.98%, p <0.05) in the resistant MCF‐7/ADR xenograft model without any obvious body weight changes and abnormal behaviors. Our findings validate that 32c is a potent dual inhibitor of HDAC1/6 that can be an efficacious treatment for breast cancer with Adriamycin resistance.