时间控制的水凝平台调节代谢重编程和cuproptosis驱动的免疫激活,对抗三阴性乳腺癌
Yao Lu1, Qingqing Pan2, Kui Luo3
1National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, China.
Biomaterials
|July 22, 2025
概括
三阴性乳腺癌 (TNBC) 的治疗具有挑战性. 一种新的水凝系统重编程瘤代谢并增强免疫力,在临床前模型中有效抑制TNBC生长和转移.
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:
- 三重阴性乳腺癌 (TNBC) 由于其代谢适应性和免疫抑制瘤微环境而带来了重大治疗挑战.
- 目前TNBC的治疗方法有限,需要新的治疗策略.
研究的目的:
- 开发和评估一个连续的药物释放水凝系统 (SeqGel),用于重编程瘤代谢和调节免疫环境,以抑制TNBC生长和转移.
- 在TNBC模型中研究代谢干预和免疫治疗的协同效应.
主要方法:
- 开发一种基于聚乙烯糖醇的可注射水凝系统 (SeqGel),可调节生物降解,用于控制药物释放.
- 顺序释放二乙酸盐以将瘤细胞代谢从糖解转移到氧化酸化,随后持续释放带有铜复合体的纳米粒子 (PED@tCu),以向线粒体复合体II.
- 在4T1皮下瘤模型中评估SeqGel的疗效,评估瘤生长,转移和免疫细胞调节.
主要成果:
- 在4T1模型中,SeqGel有效抑制了瘤生长,并减少了肺和淋巴结转移.
- 代谢重编程减少了乳酸积累和葡萄糖吸收,增加了癌细胞对线粒体损伤的敏感性.
- SeqGel通过激活AMPK通路,降解PD-L1,提高MHC I的调节,增加CD8+ T细胞透率和耗尽调节性T细胞来促进抗瘤免疫力.
结论:
- 顺序释放药物水凝系统 (SeqGel) 证明了对像TNBC这样的侵袭性癌症的一种有前途的时代代代谢免疫治疗策略.
- 通过SeqGel实现的代谢-免疫协同作用为克服TNBC挑战提供了一个新的治疗范式.
- SeqGel有效地重编程瘤代谢并增强抗瘤免疫力,导致瘤生长和转移的抑制.
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