通过通过CENP-N敲击抑制AKT/mTOR来增强鼻癌细胞的辐射敏感性
Li-Zhi Wu1, You Zou1, Bin-Ru Wang1
1Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, 238 Jie-Fang Road, Wuhan, 430060, Hubei, People's Republic of China.
Journal of translational medicine
|November 8, 2023
概括
减少中心蛋白蛋白N (CENP-N) 通过抑制AKT/mTOR来增强鼻癌 (NPC) 的辐射敏感性. 这种综合方法显著抑制瘤生长,并增加NPC细胞的亡.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 放射治疗研究 放射治疗研究
背景情况:
- 鼻癌 (NPC) 呈现出对放射治疗的可变反应.
- 中心蛋白蛋白N (CENP-N) 是kinetochore的关键组成部分,其在癌症辐射敏感性中的作用正在研究中.
- 了解影响NPC辐射敏感性的分子机制对于改善治疗结果至关重要.
研究的目的:
- 调查中心蛋白N (CENP-N) 对鼻癌 (NPC) 细胞辐射敏感性的影响.
- 探索向CENP-N的潜力,以提高NPC中的放射治疗疗效.
主要方法:
- 在NPC组织中评估CENP-N表达,使用免疫组织化学和免疫光学.
- 实验室研究涉及CENP-N敲击结合放射治疗,评估增殖,细胞亡和细胞周期进展.
- 建立了一个NPC异种移植模型,以评估CENP-N结合敲除和放射治疗的体内疗效.
主要成果:
- 较低的CENP-N水平与放射敏感NPC组织相关.
- CENP-N knockdown显著增强了NPC的辐射敏感性,敏感增强比 (SER) 为1.44和1.16.
- 联合治疗导致亡的增加,增殖抑制和G2/M停止,Bax和γH2AX升高,Cyclin D1.1降低.
- 在体内,联合治疗明显减少了瘤体积和体重,与单独放射治疗相比.
- AKT激活剂SC79逆转了观察到的效应,表明了AKT/mTOR通路的参与.
结论:
- 通过CENP-N的淘汰,NPC的辐射敏感性得到了增强.
- 该机制涉及AKT/mTOR信号通路的抑制.
- 准CENP-N是一种有前途的策略,可以改善鼻癌的放射治疗结果.
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