金属类纳米药物调节T细胞抗瘤功能用于 Sono-Metabolic 癌症治疗
Jie Yan1,2, Wenxi Li1,2, Hao Tian1,2
1Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau SAR 999078, China.
ACS nano
|July 24, 2023
概括
这项研究引入了一种新的声代谢疗法,使用纳米医学来重新编程瘤微环境. 该疗法通过抑制癌细胞糖解和诱导线粒体功能障碍来增强抗瘤T细胞活性,改善癌症免疫治疗结果.
科学领域:
- 生物医学工程 生物医学工程
- 癌症研究 癌症研究
- 免疫治疗是一种免疫疗法.
背景情况:
- 癌细胞通过消耗葡萄糖和产生乳酸,创造了一个缺乏葡萄糖的瘤微环境 (TME).
- 乳酸盐会损害CD8+ T细胞功能,同时促进调节性T (Treg) 细胞介导的免疫抑制.
- 通过抑制有氧糖解和诱导线粒体功能障碍来重编程TME,可以增强抗瘤免疫力.
研究的目的:
- 开发一种使用氨酸 (HA) 修饰的金属纳米药物 (HPP-Ca@GSK) 的超代谢性癌症疗法.
- 研究这种疗法抑制癌细胞有氧糖解和破坏Treg细胞稳定的潜力.
- 评估疗法增强CD8+T细胞激活和抗瘤疗效的能力.
主要方法:
- 提供GSK2837808A (GSK),乳酸脱酶A (LDHA) 抑制剂,以抑制有氧糖解.
- 超声波介导的氧化应激诱导线粒体功能障碍和癌细胞中的过载.
- 用抗细胞毒性T淋巴细胞关联蛋白-4 (CTLA-4) 抗体进行组合治疗.
主要成果:
- HPP-Ca@GSK治疗成功抑制了癌细胞的有氧糖解,产生高葡萄糖,低乳酸盐的TME.
- 超声波介导的过载放大了线粒体功能障碍,并促进了与损伤相关的分子模式释放.
- 索诺代谢疗法在体外和体内表现出显著的抗癌活性.
- 与抗CTLA-4抗体的结合进一步增强了Treg细胞的不稳定性和治疗疗效.
结论:
- 使用HPP-Ca@GSK的sono-metabolic疗法为癌症免疫治疗提供了一个有希望的策略.
- 代谢干预可以重新编程TME以有利于抗瘤免疫力.
- 这种方法增强了CD8+ T细胞激活和瘤透,同时破坏了抑制Treg细胞的稳定.
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