丧失JAK1功能导致G2/M细胞周期缺陷易受Kif18a抑制的影响
Vanessa Kelley1,2, Marta Baro1, William Gasperi1
1Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT 06510 USA.
bioRxiv : the preprint server for biology
|March 10, 2025
概括
简氏激酶1 (JAK1) 驱动了头部和部状细胞癌 (HNSCC) 的瘤细胞放射敏感性. 抑制JAK1或Kif18a通过破坏细胞循环停止和线粒细胞进展来提高辐射疗效.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 头部和部状细胞癌 (HNSCC) 对DNA损伤疗法表现出耐药性.
- 了解耐药机制对于提高癌症治疗疗效至关重要.
研究的目的:
- 确定推动HNSCC.治疗耐药性的新生物学机制.
- 通过针对细胞循环调节来探索克服放射电阻的策略.
主要方法:
- 在高风险HNSCC亚型中使用并行聚合的基因CRISPR-Cas9查.
- 评估了JAK1淘汰 (KO) 和抑制 (使用abrocitinib) 对DNA损伤反应的影响.
- 分析了细胞周期进展,线粒细胞缺陷和DNA损伤标记物 (例如微核).
- 评价Kif18a抑制作为一种提高辐射疗效的策略.
主要成果:
- JAK1被确定为瘤细胞放射敏感性的关键驱动因素,与ATM,DNAPK和NFKB信号一起.
- JAK1 KO增强了DNA损伤引起的G2停止,增加了细胞存活率.
- 抑制JAK1和KO减少了辐射诱导的微核形成.
- 失去JAK1功能会影响PLK1和AURKA的激活,导致线粒细胞缺陷.
- 证明Kif18a抑制会加剧线粒体应激并提高辐射疗效.
结论:
- 在调节HNSCC放射敏感性方面,JAK1发挥着关键作用,通过影响G2逮捕和线粒细胞进展来调节HNSCC的放射敏感性.
- 向JAK1或Kif18a是一个有前途的策略,可以克服HNSCC中对DNA损伤的治疗抵抗力.
- 调节细胞周期检查点提供了一种新的方法来提高放射治疗的有效性.
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