通过通过MAPK通路重编程巨细胞极化,IL-33/ST2信号传递促进肝内胆管癌
Aimaiti Yasen1, Yichen Tang1, Xiaomin Yang1
1Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Army Medical University, No. 183 Xinqiao High Street, Shapingba District, Chongqing, 400037, China.
干白素-33 (IL-33) 信号传递通过MAPK通路将巨细胞两极化到M2状态,从而促进肝内胆管癌 (ICC) 的生长. 阻止IL-33/ST2信号传递可能为ICC提供一种新的治疗方法.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
背景情况:
- 互白素-33 (IL-33) 和其受体ST2在肝脏内胆固醇癌 (ICC) 微环境中的巨细胞极化调节中的作用尚不清楚.
- 研究IL-33/ST2信号通路对于理解ICC进展至关重要.
研究的目的:
- 阐明IL-33/ST2信号影响巨细胞极化机制.
- 确定这种信号通路对ICC进展的影响,并确定潜在的治疗点.
主要方法:
- 在小鼠巨细胞系中过度表达IL-33,并通过中和抗体阻断IL-33/ST2信号传递.
- 与人类ICC细胞共同培养系统和使用皮下和正位异种移植小鼠模型的"体内"研究.
- 评估巨细胞极化标记物,MAPK通路激活,ICC细胞入侵,迁移,上皮-介质细胞过渡 (EMT) 和瘤生长.
主要成果:
- 过度表达IL-33促进了M2巨细胞的两极分化,由增加的M2标记物表达和MAPK通路激活 (ERK1,JNK,P38) 表示.
- IL-33诱导的M2巨细胞增强了ICC细胞的入侵,迁移和EMT,这些被ST2阻塞减弱.
- *体内*研究证实,ST2中和抑制了ICC瘤的生长,而M2巨输液促进了它,观察到关键分子标记物的变化.
结论:
- 通过MAPK通路促进M2巨细胞极化,IL-33/ST2信号驱动ICC的进展.
- 准IL-33/ST2轴为肝内胆管癌提供了一个有前途的新疗法策略.
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