STK11协调IL-4信号与代谢重编程以控制M2巨细胞两极分化和抗瘤免疫力
Jing Yang1,2, Naresh Singh3, Chengxian Xu1
1Herman B Wells Center for Pediatric Research and Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
Science advances
|September 26, 2025
概括
这项研究表明,STK11 (氨酸/氨酸激酶11) 通过将IL-4信号与代谢重编程联系起来,抑制M2巨细胞极化. STK11缺乏促进M2巨细胞,损害胰腺癌的抗瘤免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢途径 代谢途径
- 癌症生物学 癌症生物学
背景情况:
- 巨细胞通过功能极化在调节免疫反应方面发挥着至关重要的作用.
- 介素-4 (IL-4) 信号传递是替代激活 (M2) 巨细胞极化的一个关键驱动因素.
- 代谢重编程显著影响巨细胞的功能状态.
研究的目的:
- 研究STK11在调节巨细胞极化,特别是M2极化中的作用.
- 阐明STK11影响M2巨细胞极化和新陈代谢的分子机制.
- 评估STK11对抗瘤免疫力和胰腺癌瘤进展的影响.
主要方法:
- 在IL-4刺激的巨细胞上进行了综合性转录和代谢分析.
- 使用遗传模型在髓状细胞中诱导STK11缺乏.
- 药理上抑制了FOXO1激活和谷氨胺代谢.
- 使用胰腺管道腺癌的 ортотоп模型来评估体内效应.
主要成果:
- STK11被确定为关键调节器,将IL-4信号与M2极化期间的代谢重编程联系起来.
- STK11缺乏症增强了M2巨细胞标记物,并促进了谷氨胺代谢.
- STK11缺乏导致FOXO1激活增加,导致M2极化.
- 抑制FOXO1或谷氨酸代谢可以逆转M2极化.
- 骨髓细胞特异性STK11删除通过增加M2型瘤相关的巨细胞和降低抗瘤免疫力,加速了胰腺瘤的进展.
结论:
- 通过将IL-4信号和代谢重编程集成在一起,STK11在抑制M2巨分化方面发挥着至关重要的作用.
- STK11缺乏通过FOXO1激活和改变谷氨胺代谢促进M2极化.
- 准STK11或其下游途径可能为胰腺癌提供新的免疫代谢治疗策略.
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