治疗诱导的衰老性质母细胞细胞通过激活DDX58-介导的STAT1信号来维持癌前免疫微环境

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Zhixing Wang¹, Yuxin Zhang¹, Fan Wu^2,3

¹State Key Laboratory of Common Mechanism Research for Major Diseases, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Neuroscience Center, and Medical Primates Research Center Chinese, Beijing 100005, China.

|April 22, 2025

概括

化疗可以诱导质母细胞瘤细胞衰老,通过DDX58-STAT1-CSF1通路促进瘤生长. 针对这一轴可能通过调节瘤免疫微环境来改善质母细胞瘤治疗.

科学领域:

在瘤学瘤学.
癌症生物学癌症生物学
免疫学免疫学免疫学

背景情况:

治疗诱导的癌细胞衰老对瘤进展有上下文依赖的影响.
质母细胞瘤衰老的机制和免疫微环境影响尚未得到充分理解.

研究的目的:

研究治疗诱导的衰老质母细胞细胞在瘤进展中的作用.
阐明潜在的分子机制及其对瘤免疫微环境的影响.

主要方法:

使用药物治疗开发了体外衰老的质母细胞瘤细胞模型.
使用了体内小鼠模型和条件介质共同培养实验.
进行了CRISPR-Cas9查,RNA测序,蛋白质质谱和免疫沉以确定关键分子参与者.

主要成果:

衰老的质母细胞细胞在体内表现出促进瘤的功能,降低了生存率.
RNA结合蛋白DDX58在治疗诱导的衰老中至关重要,其激活取决于线粒体双链RNA积累.
DDX58通过STAT1-CSF1轴促进与瘤相关的巨细胞招募和M2两极分化,在翻译后调节STAT1.
结合使用弗鲁达拉宾 (STAT1抑制剂) 和泰莫索洛米德 (TMZ) 的联合治疗减少了TAM并延迟了瘤生长.

结论:

DDX58-STAT1-CSF1轴在治疗诱导的衰老性质母细胞瘤中介导出一个前瘤免疫微环境.
这个轴代表了克服传统疗法诱导的质母细胞瘤细胞衰老的潜在治疗目标.

关键词:

DDX58DDX58DDX58DDX58DDX58DDDX58DDX58DDDX58DDDX58DDX58DDDX58DDX58DDX58DDX 质母细胞瘤 (glioblastoma) 是一个免疫微环境是一个微环境.美国国家统计局 (STAT1)衰老是一种衰老.这就是TAMAMTAM.

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