针对协同性线粒体损伤的瘤微环境特定驱动纳米剂与免疫细胞死亡相关的免疫细胞死亡和缓解免疫抑制
Yanrong Qian1,2, Weilin Chen2, Man Wang2
1Shenzhen Research Institute, Shandong University, Shenzhen, 518057, P. R. China.
Small methods
|December 21, 2023
概括
这项研究引入了一种新型纳米剂,通过诱导免疫细胞死亡和阻断免疫抑制来激活抗瘤免疫力. 这种双重方法显示了增强癌症免疫治疗和克服治疗耐药性的前景.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 免疫治疗是一种免疫疗法.
背景情况:
- 免疫疗法面临的挑战是由于免疫刺激和抵抗力不足.
- 激活免疫细胞死亡 (ICD) 和阻断里胺2,3-二氧化酶 (IDO) 途径是克服这些局限性的关键策略.
研究的目的:
- 开发一种瘤微环境 (TME) 特定的纳米剂,用于联合化学动力学疗法,化疗和免疫疗法.
- 为了引起全身抗瘤免疫力并逆转免疫抑制TME.
主要方法:
- 一种由上转化纳米颗粒组成的纳米剂,涂上一个带有四化键桥接的中孔二氧化层 (MON),装载有Fe2+,黄素和induximod.
- 利用MON降解,芬顿反应和黄素来诱导氧化应激并激活ICD.
- 使用IDO抑制剂来阻止免疫抑制途径.
- 采用向上转换发光 (UCL) 成像来指导治疗.
主要成果:
- 该纳米剂在体内和体外有效抑制了原发性瘤生长.
- 治疗诱导了免疫启动和记忆效应,导致拒绝重新挑战的瘤.
- 该策略通过加剧氧化应激和阻断IDO通路来逆转免疫抑制的TME.
结论:
- 开发的纳米系统展示了一个强大的双重方法来激活抗瘤免疫力.
- 这一策略具有显著的潜力,可以作为一种补充疗法来增强免疫疗法和其他多模式治疗模式.
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