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Ming Zhang¹, Meixia Chen¹, Peiyan Li¹

¹Laboratory of Pesticides and Chemistry Key Laboratory of Ministry of Education, School of Life Sciences, Central China Normal University, Wuhan, Hubei, P.R. China; Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, Hubei, P.R. China.

Cell chemical biology

|October 24, 2025

概括

研究人员开发了针对WDR5的抑制剂,WDR5是MLL1重组白血病中的关键蛋白质. 这些WDR5抑制剂有效地降低了癌细胞的生长,并在小鼠中显示出抗瘤活性,为白血病提供了新的治疗策略.

科学领域:

表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.
分子生物学分子生物学
癌症研究癌症研究

背景情况:

WD40重复含有蛋白5 (WDR5) 对SET1/混合血统白血病 (MLL) 复合体至关重要.
WDR5通过H3K4甲基化调节基因表达,在MLL1重组型白血病中至关重要.

研究的目的:

开发针对WDR5.5的基于的新型抑制剂.
在白血病模型中研究这些抑制剂的治疗潜力.

主要方法:

利用WDR5的内源微蛋白结合剂 (EMBOW) 来设计抑制剂.
采用生物物理分析和结构研究来描述WDR5-EMBOW相互作用.
在体外 (H3K4甲基化,基因表达,细胞增殖) 和体内 (异种移植小鼠模型) 评估的疗效.

主要成果:

确定了WDR5交互 (WIN) 区域作为EMBOW的主要结合区域.
开发了优化的EMBOW衍生Ac7,对WDR5具有很高的亲和力 (K_d = 9.17 ± 4.01 nM).
Ac7有效地抑制了H3K4甲基化,抑制了瘤基因表达,减少了白血病细胞的增殖,并且在体内表现出显著的抗瘤活性,毒性低.

结论:

针对WDR5的基于的抑制剂,如Ac7,对于MLL1重组型白血病是一种有前途的治疗策略.
这种方法为开发新的表观遗传调节器向治疗方法提供了基础.
这些发现支持将WDR5作为白血病的创新治疗方法.

关键词:

一个叫做EMBOWW的人.在WD40中,WD40是WD40的.这是WDR5的WDR5.WDR5-MLL1蛋白质与蛋白质的相互作用基因组 H3K4 的基因组 H3K4 的基因组甲基化处理甲基化处理这是一种皮多米米特抑制剂.

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