过度表达的FOXM1与MMB合作,增加NSCLC中WEE1抑制剂的敏感性
Jian Tan1, Jingbo Ma1, Weiqiang Zhang1
1Department of Thoracic Surgery, Seventh Medical Center of Chinese PLA General Hospital, Beijing, China.
Journal of thoracic disease
|July 10, 2023
概括
叉头盒M1 (FOXM1) 和MYB-MuvB复合体 (MMB) 的相互作用增强了非小细胞肺癌 (NSCLC) 中对WEE1抑制剂的敏感性. 这种FOXM1-MMB复合物促进DNA复制应激并激活检查点,为NSCLC提供新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 非小细胞肺癌 (NSCLC) 是一个重大的死亡率挑战.
- 与分叉盒M1 (FOXM1) 相互作用的MYB-MuvB (MMB) 综合体对于细胞周期进展至关重要.
- 在NSCLC中,FOXM1-MMB复合体在WEE1抑制剂敏感性中的确切作用在很大程度上仍未确定.
研究的目的:
- 阐明FOXM1-MMB复合体在调节NSCLC中WEE1抑制剂敏感性的作用.
- 研究FOXM1如何影响DNA复制压力,DNA损伤和细胞周期检查点,以应对WEE1抑制.
- 确定在NSCLC治疗中准FOXM1-MMB复合物的治疗影响.
主要方法:
- 定量聚合酶连锁反应 (RT-qPCR) 用于评估FOXM1,LIN54,RPA,γH2AX和CCNB的mRNA水平.
- 西方涂抹以评估相应的蛋白质表达水平.
- 细胞计数工具-8 (CCK-8) 试验以确定细胞活力和对AZD-1775治疗的反应.
主要成果:
- 在WEE1抑制下,FOXM1过度表达显著降低了细胞存活率,这一效应被LIN54敲击逆转,证实了FOXM1-MMB复合物的必要性.
- FOXM1上调加剧了DNA复制压力和DNA损伤,由增加的RPA和γH2AX表达体现出来.
- 据证明,FOXM1-MMB复合体通过增强CCNB表达和促进WEE1脱,从而增加对WEE1抑制剂AZD-1775.5的敏感性来激活G2/M检查点.
结论:
- 过度表达的FOXM1,与MMB复合体结合,增强了NSCLC中WEE1抑制剂的敏感性.
- FOXM1-MMB复合体在NSCLC的发病和对向疗法的反应中起着关键的调节作用.
- 针对FOXM1-MMB途径为NSCLC患者提供了一个有前途的治疗策略.
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