YTHDF1通过抑制结直肠癌中NOTCH1诱导的干性来向化疗反应
Henley Cheung1, Huarong Chen1,2, Danyu Chen1
1Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China.
m6A阅读器YTHDF1通过激活NOTCH1信号来驱动结直肠癌 (CRC) 干细胞和化学抵抗. 向YTHDF1提供了一种有希望的策略,以提高CRC患者的化疗疗效率.
科学领域:
- 在瘤学瘤学.
- 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
背景情况:
- N6-甲基氨酸 (m6A) 修饰是癌症中的关键表观遗传调节剂.
- 癌症干细胞 (CSCs) 驱动着结直肠癌 (CRC) 的发病和治疗耐药性.
- YTHDF1是一种m6A读者蛋白,涉及到各种细胞过程.
研究的目的:
- 研究YTHDF1在结直肠癌干,瘤发生和化疗耐药性中的作用.
- 阐明YTHDF1在CRC中发挥作用的下游分子机制.
- 评估向YTHDF1在CRC治疗中的治疗潜力.
主要方法:
- 对人类CRC组织中YTHDF1表达的分析和与CSC标记物的相关性 (CD133,LGR5).
- 使用CSC和患者衍生器官的体外研究来评估YTHDF1在自我更新和化学抵抗中的作用.
- 使用基因工程小鼠模型 (Ythdf1-KI和淘汰赛) 和异种移植模型进行体内研究,以评估瘤发生和治疗反应.
- 整合性多原子分析以确定下游目标,然后进行功能验证 (例如,NOTCH1淘汰,DAPT处理).
- 在体内对YTHDF1向的治疗评估使用VNP封装的siYTHDF1和盐酸C,单独或与化疗结合.
主要成果:
- 人类CRC中YTHDF1表达与CSC标记物正相关.
- 在小鼠模型中,YTHDF1促进CSC自我更新,瘤启动和结直肠瘤发生.
- YTHDF1增强了NOTCH1的翻译和信号传递,推动了CRC的干和瘤发生.
- 通过抑制亡和DNA损伤,YTHDF1赋予了对氧化和5-甲的耐药性.
- 在体内向YTHDF1显著抑制瘤生长,并提高标准化疗的疗效.
结论:
- YTHDF1是结直肠癌干细胞和化疗抵抗的关键驱动因素.
- YTHDF1/NOTCH1轴在CRC进展和治疗耐药性方面发挥着至关重要的作用.
- 向YTHDF1代表了一种有前途的治疗策略,以改善结直肠癌治疗结果.
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