阻断线粒体新陈代谢的纳米辅助剂逆转了免疫抵抗的微环境,以敏感化素结合的基于帕克利塔塞尔的化疗免疫疗法
Zaigang Zhou1, Wenjuan Luo2, Chunjuan Zheng2
1National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China.
Acta pharmaceutica Sinica. B
|September 23, 2024
概括
塔莫西芬 (TAM) 向PD-L1和TGF-β,以克服对素结合的帕克利塔塞尔 (PTX@Alb) 化疗的耐药性. 这种新的线粒体代谢阻断策略增强了瘤中的药物积累和免疫反应.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 癌症研究 癌症研究
背景情况:
- 结合白蛋白的帕克利塔塞尔 (PTX@Alb) 疗效受到由于密集的原和通过PD-L1上调获得的免疫抵抗而导致瘤积累不良而受到限制.
- 乳腺癌药物塔莫西芬 (TAM) 可以抑制线粒体代谢,并通过AMPK激活被确定为PD-L1和TGF-β的双重抑制剂.
研究的目的:
- 开发一种新的策略来克服PTX@Alb在瘤中的抗药性.
- 研究他莫西芬作为PD-L1和TGF-β双重抑制剂的潜力.
- 通过改善药物输送和免疫反应来提高化疗免疫疗法的疗效.
主要方法:
- 针对线粒体的三 (TPP) 与TAM的结合,形成TPP-TAM.
- TPP-TAM与白蛋白 (Alb) 自组合,形成TPP-TAM@Alb纳米粒子.
- 在体外和体内评估TPP-TAM@Alb纳米颗粒对原减少,药物积累,PD-L1/TGF-β抑制和免疫细胞透的作用.
主要成果:
- 在实验室中,TPP-TAM@Alb纳米颗粒有效降低了原体的表达.
- 在4T1瘤中观察到PTX@Alb的增加积累.
- 在瘤中PD-L1和TGF-β表达显著下降,导致T细胞透率增加.
- TPP-TAM@Alb使瘤对PTX@Alb介导的化疗免疫疗法产生敏感.
结论:
- 使用TPP-TAM@Alb纳米颗粒的新型线粒体代谢阻塞策略有效抑制PTX@Alb耐药瘤.
- 这种方法增强了药物输送,并通过降低PD-L1和TGF-β的调节来克服免疫抵抗.
- 这些发现支持这种策略的潜在临床应用,以改善化疗-免疫疗法的结果.
关键词:
胺结合的帕克利塔塞尔化疗-免疫疗法是一种化学免疫疗法.原蛋白是一种原蛋白.药物的积累 药物的积累免疫抵抗性的微环境线粒体代谢的代谢过程编程细胞死亡 - - 结合物1转化增长因子-β的转化增长因子-β.更多相关视频
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