通过预先组织的环抑制剂对AF9 YEATS域进行选择性向
Yixiang Jiang1, Guochao Chen2,3, Xiao-Meng Li1
1Departments of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
Journal of the American Chemical Society
|December 11, 2020
概括
研究人员开发了一种新型环抑制剂JYX-3,可选择性地向AF9 YEATS域. 这一突破为开发抗癌症等与YEATS领域相关的药物提供了有前途的新途径.
科学领域:
- 表观遗传学
- 分子生物学
- 药物发现
背景情况:
- YEATS域是基因组 lysine 乙化 (Kac) 和crotonylation (Kcr) 的表观读取器.
- 功能障碍的YEATS-Kac/Kcr相互作用与人类疾病有关,包括癌症.
- YEATS领域代表了有前途的治疗目标.
研究的目的:
- 为YEATS领域开发选择性抑制剂,特别区分AF9和ENL YEATS领域.
- 为了实现选择性,确定新的结合点.
- 在细胞环境中验证选择性抑制剂的疗效.
主要方法:
- 识别出与乙素结合口袋区别的近位基位.
- 结构预先组织的环的设计和合成.
- 生物化学测试以确定结合亲和力和选择性.
- 基于细胞的测试以评估目标参与和功能影响.
主要成果:
- 确定了一个新近位点,使AF9 YEATS与ENL YEATS有所区别.
- 通过对乙氨酸口袋和近位点的联合向,获得了选择性的AF9 YEATS抑制剂.
- 环酸JYX-3对AF9YEATS的结合亲和力比ENLYEATS的结合亲和力高38倍.
- 在细胞中,JYX-3 激活了 AF9,破坏了它的染色体招募,并抑制了目标基因转录.
结论:
- 选择性抑制YEATS域,特别是AF9,可以通过向乙素口袋和相邻的全位实现.
- JYX-3 是AF9 YEATS的一个强有力的选择性抑制剂.
- 这项研究为开发 YEATS 领域相关病理的新疗法提供了基础.
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