光热可控制的瘤代谢调节,以协助T细胞激活,以促进免疫治疗
Jun Ma1, Lixin Hua2, Yinxing Zhu3
1General Surgery Department, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Third Hospital of Shanxi Medical University, Tongji Shanxi Hospital, Taiyuan, 030032, People's Republic of China.
International journal of nanomedicine
|November 8, 2024
概括
这项研究引入了一种新的光热药物递送系统,以抑制瘤糖解和PD-L1表达. 这种方法增强T细胞活性,改善瘤微环境,以有效的癌症免疫疗法.
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:
- 瘤细胞糖解促进了扩散,并创造了一个免疫抑制性瘤微环境 (TME).
- 瘤糖解会酸化TME,抑制T细胞活性,并通过PD-L1上调促进免疫逃逸.
- 调节瘤细胞糖解对于改善TME和增强癌症治疗至关重要.
研究的目的:
- 开发一个精确的药物输送平台,用于光热控制的调节瘤代谢.
- 为了逆转由瘤糖解引起的免疫抑制性TME,并增强T细胞介导免疫疗法.
- 通过向瘤细胞糖解来减少瘤免疫逃逸.
主要方法:
- 制造空洞的半孔普鲁士蓝色纳米粒子,封装3-基酸 (一种糖解抑制剂) 和相变材料.
- 用瘤细胞膜对纳米粒子进行修改,以创建可光热控制的调节器 (B/T-HM).
- 使用808nm辐射进行局部加热,触发药物释放并抑制瘤糖解.
主要成果:
- 在光热刺激时,B/T-HM通过HK2通路有效抑制瘤糖解.
- 抑制糖解会减少瘤细胞的增殖,乳酸盐的产生和PD-L1的表达.
- 联合光热疗法和αPD-1免疫疗法协同激活T细胞以消除瘤.
结论:
- 一个光热精度药物递送平台通过向瘤代谢,成功地重塑了免疫抑制性TME.
- 这个平台为基于T细胞的瘤免疫疗法提供了一个新的策略.
- 开发的系统为癌症治疗中的光热可控代谢免疫疗法开辟了新的途径.
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