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胰岛素通过STING途径调节肝纤维化MASH患者的NK细胞活性

Johnny Amer¹, Ahmad Salhab¹, Amiram Ariel²

¹The Liver Institute, Hadassah Medical Hospital, Jerusalem 91120, Israel.

|July 11, 2025

概括

干扰素基因刺激器 (STING) 途径功能障碍会损害肝纤维化中的自然杀手 (NK) 细胞活性. 向STING和胰岛素信号恢复NK细胞功能和免疫力在代谢功能障碍相关的脂肪肝炎.

科学领域:

免疫学免疫学免疫学
肝病学肝病学是一种肝病学.
代谢疾病代谢疾病

背景情况:

干扰素基因刺激器 (STING) 途径对先天免疫非常重要,但其在肝纤维化期间在自然杀手 (NK) 细胞中的作用尚未得到研究.
代谢功能障碍相关的脂肪肝炎 (MASH) 与肝脏免疫失调有关.

研究的目的:

研究不同肝纤维化阶段的MASH患者的STING表达,NK细胞活性和胰岛素受体 (IR) 信号之间的关系.
探索针对STING和胰岛素信号的治疗潜力,以恢复肝纤维化中的NK细胞功能.

主要方法:

从健康对照和MASH患者中分离了外围NK细胞 (早期:F1/F2;高级:F3/F4).
流细胞计评估了STING,IR和NK细胞激活/抑制标记物. 细胞毒性试验评估了NK细胞功能与肝脏星状细胞的对比.
用STING激动剂和胰岛素来检查它们对NK细胞活动和信号传递的影响.

主要成果:

NK细胞中的STING表达与肝纤维化严重程度相关;晚期纤维化显示受抑制的STING和受损的NK细胞细胞毒性和IFN-γ产生.
在所有纤维化阶段,STING激动剂治疗恢复了STING表达和增强了NK细胞活性.
胰岛素和STING激动剂组合协同调节了IR和STING,改善NK细胞功能和细胞毒性,特别是在晚期纤维化中.

结论:

肝纤维化中的NK细胞功能障碍与改变的STING和胰岛素信号相关.
准STING和胰岛素信号通路是一个有前途的治疗策略,用于恢复MASH相关肝纤维化中的NK细胞功能和免疫监测.

关键词:

马什 (MASH) 是一个非常重要的产品.在 NK 细胞中,NK 细胞是 NK 细胞.刺痛是一种刺痛.胰岛素受体的胰岛素受体肝脏纤维化肝脏纤维化

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