Lactam-Based HDAC Inhibitors for Anticancer Chemotherapy: Restoration of RUNX3 by Posttranslational Modification and Epigenetic Control
作者:Misun Cho、Eunhyun Choi、Jae Hyun Kim、Hwan Kim、Hwan Mook Kim、Jang Ik Lee、Ki-Chul Hwang、Hyun-Jung Kim、Gyoonhee Han
DOI:10.1002/cmdc.201300393
日期:2014.3
transcription factor 3 (RUNX3) are regulated by histone deacetylase (HDAC). HDAC inhibition alters epigenetic and posttranslational stability of RUNX3, leading to tumor suppression. However, HDAC inhibitors can nonselectively alter global gene expression through chromatin remodeling. Thus, lactam‐based HDAC inhibitors were screened to identify potent protein stabilizers that maintain RUNX3 stability by acetylation
肿瘤抑制子相关转录因子3(RUNX3)的表达和稳定性受组蛋白脱乙酰基酶(HDAC)调节。HDAC抑制会改变RUNX3的表观遗传和翻译后稳定性,从而导致肿瘤抑制。但是,HDAC抑制剂可以通过染色质重塑非选择性地改变全局基因的表达。因此,筛选了基于内酰胺的HDAC抑制剂以鉴定有效的蛋白质稳定剂,该稳定剂可通过乙酰化保持RUNX3的稳定性。通过基于细胞的RUNX激活和HDAC抑制测定法确定了111种基于内酰胺的类似物的RUNX活性和HDAC抑制作用。3- [1-(4-溴苄基)-2-氧代-2,5-二氢-1 H-吡咯-3-基] -N-羟基丙酰胺(11-8)可显着提高RUNX3的乙酰化和稳定性,并具有相对较低的RUNX3 mRNA表达和HDAC抑制活性。在MKN28异种移植模型中,该化合物显示出显着的抗肿瘤作用,比SAHA强。因此,我们提出了一种新的策略,其中HDAC抑制剂用作选择性靶向RUNX3的表