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通过重编程瘤微环境中的异常脂质代谢,使用虹膜-共载纳米粒子恢复抗瘤免疫力
Xingzhe Tang1, Yufei Zhao1, Yan Gu2
1Nurturing Center of Jiangsu Province for State Laboratory of AI Imaging & Interventional Radiology, Department of Radiology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, 210009, PR China.
Acta biomaterialia
|January 10, 2026
概括
这项研究开发了虹素-纳米颗粒来重编程三阴性乳腺癌 (TNBC) 的脂质代谢. 这种方法可以增强抗瘤免疫力,并通过向免疫抑制性瘤微环境 (TME) 来提高免疫疗法的有效性.
科学领域:
- 生物材料科学 生物材料科学
- 癌症免疫学 癌症免疫学
- 代谢重编程 代谢重编程
背景情况:
- 瘤微环境 (TME) 中的脂质代谢失调促进免疫抑制,并阻碍抗瘤反应.
- 目前针对癌症的脂质向策略受到细胞特异性和全身毒性的限制.
- 三重阴性乳腺癌 (TNBC) 由于其具有攻击性和免疫逃避性质而构成重大挑战.
研究的目的:
- 开发一种新型的纳米材料平台,用于联合输送虹膜素和离子 (Mn2+),以准TNBC中的脂质代谢失调.
- 研究素和Mn2+在调节免疫抑制TME和恢复抗瘤免疫力方面的协同作用.
- 通过代谢重编程来增强抗编程细胞死亡蛋白1 (aPD-1) 治疗的疗效.
主要方法:
- 制造含有的半孔有机纳米粒子 (MMONs),加载有素 (MMONs-irisin).
- 评价pH和谷氨 (GSH) 响应释放的素和Mn2+在TME.
- 在小鼠TNBC模型中评估脂质滴 (LD) 减少,免疫细胞功能 (树突细胞和CD8+T细胞) 和cGAS-STING通路激活.
- 使用MMONs-irisin和aPD-1治疗的组合治疗.
主要成果:
- 在对TME特异性刺激的反应中,MMONs-irisin证明了对irisin和Mn2+的受控释放.
- 素和Mn2+的同时递送有效地减少了细胞内和内脂滴,重编程了脂质代谢.
- 这种代谢重编程增强了树突细胞的抗原呈现和CD8+ T细胞细胞毒性.
- MMONs-irisin治疗激活了cGAS-STING通路并增加了瘤免疫性,显著改善了对aPD-1治疗的反应.
结论:
- 通过MMONs共同输送的虹素-是一种有前途的策略,可以克服TNBC中的代谢性免疫抑制.
- 这种方法有效地通过调节脂质代谢和增强免疫细胞功能来恢复抗瘤免疫力.
- 开发的生物材料平台增强了免疫检查点抑制剂的疗效,这代表了癌症免疫治疗的重大进步.
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