无时间通过抑制转移素介导的铁亡促进LUAD生长,并对抗抗PD-1免疫疗法的瘤微环境进行重新编程
Chenchen Hu1, Feiming Hu1, Changjian Shao2
1Department of Immunology, Basic Medicine School, Air Force Medical University, Xi'an 710032, Shaanxi, P. R. China.
通过抑制铁亡,RNA结合蛋白TIMELESS促进了肺腺癌 (LUAD) 的生长. 针对 TIMELESS/Transferrin 轴为LUAD提供了一个潜在的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 肺腺癌 (LUAD) 是一个重大的全球健康挑战.
- RNA结合蛋白 (RBPs) 的失调与癌症的发展有关.
- 需要阐明RBP TIMELESS在LUAD进展中的作用.
研究的目的:
- 为了研究由LUAD中 TIMELESS调节的分子网络.
- 确定TIMELESS在LUAD进展和铁亡中的机械作用.
- 评估TIMELESS对LUAD治疗反应的影响.
主要方法:
- 分析TCGA-LUAD,GEO和单细胞RNA-seq数据集,以确定关键的RBP.
- 使用CLIP-seq和RNA-seq来识别无时间结合的铁灭位.
- 在体内研究中,使用了带有埃拉斯和PD-1阻断的正位肺癌小鼠模型.
主要成果:
- 无时无刻的淘汰丰富的RNA结合和铁灭的途径.
- 时间直接结合转移素 (TF) mRNA,通过 CNOT3 促进其降解,从而抑制铁亡.
- 结合埃拉斯,PD-1阻断和TIMELESS耗尽,增强了抗瘤功效和免疫细胞透.
结论:
- 通过 TIMELESS/CNOT3/TF mRNA 轴抑制铁亡,提升LUAD 的生长.
- 高TIMELESS表达与抗瘤免疫力低下和PD-L1.1增加相关.
- 时间无限/TF监管轴代表了LUAD的潜在治疗目标.
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