通过抑制单碳代谢来抑制NRF2
Julius Chembo1, Brittany M Bowman1, Kyle Lapak1
1Department of Cell Biology and Physiology, Washington University in St. Louis, St. Louis, MO, 63110.
像WCDD115这样的甲胺衍生物通过向二叶酸还原酶 (DHFR) 有效抑制核因子红色素2相关因子2 (NRF2). 这为抗击NRF2驱动的癌症提供了新的策略.
科学领域:
- 癌症学
- 分子生物学
- 药物发现
背景情况:
- 核红素因子2 (NRF2) 对于氧化应激反应至关重要,在癌症中异常激活,促进瘤生长和治疗耐药性.
- 针对NRF2的治疗抑制剂迫切需要用于癌症治疗.
研究的目的:
- 设计和合成基于PYR的新型衍生物作为NRF2的强效抑制剂.
- 阐明由PYR及其衍生物抑制NRF2的机制,重点关注结构-活性关系和目标参与.
主要方法:
- 对25种PYR衍生物的合成和结构活性关系 (SAR) 研究.
- 在体外测试以确定NRF2和人类二酸减少酶 (hDHFR) 抑制作用.
- 代谢学,遗传学,药理学和代谢性表观症研究.
- 全球和目标蛋白质组学分析.
主要成果:
- 与PYR (1.2μM) 相比,WCDD115是一种新型PYR衍生物,其NRF2抑制功效 (57nM) 高出22倍.
- WCDD115表现出比PYR (4. 49μM) 的31倍的hDHFR抑制功效 (144nM).
- 确定DHFR被PYR和WCDD115抑制为NRF2的关键,并观察到与甲醇的相似性.
- 蛋白质组学发现了重叠作用,包括NRF2氧化应激反应抑制和TP53和DNA损伤反应途径的激活.
结论:
- 甲胺及其衍生物WCDD115是NRF2抗氧化功能的有效间接抑制剂.
- 抑制DHFR是抑制NRF2信号的一个关键机制.
- 这些发现强调了单碳代谢在NRF2信号传递中的重要性,并提出了NRF2驱动癌症的新疗法.
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