工程化巨细胞膜模仿的纳米药物激活cGAS/STING通路,在不完全的射频剥离后逆转瘤免疫抑制
Wei-Hua Zhang1,2,3, Lei Chen4, Lin Gao5
1Center of Interventional Radiology and Vascular Surgery, Nurturing Center of Jiangsu Province for State Laboratory of AI Imaging & Interventional Radiology, Department of Radiology , Zhongda Hospital, Medical School, Southeast University, Nanjing, 210009, China.
Journal of nanobiotechnology
|December 16, 2025
概括
工程纳米颗粒通过输送诱导细胞死亡和激活抗瘤免疫力的药物来克服不完全射频剥离 (iRFA) 后癌症复发. 这种方法逆转了免疫抑制瘤微环境,提供了一个有前途的治疗策略.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 癌症免疫疗法癌症免疫疗法
背景情况:
- 不完整的射频切除 (iRFA) 会导致瘤复发和耐药性,这是由于免疫抑制的微环境造成的.
- 微致命的热损伤激活了抗氧化途径,并通过CCL2通过免疫抑制性巨细胞进行招募.
- 现有治疗方法在克服治疗耐药性和iRFA后复发方面面临挑战.
研究的目的:
- 开发一种纳米治疗策略,以克服iRFA后的瘤复发和治疗耐药性.
- 为了工程纳米粒子,共同提供药物和向瘤微环境组件.
- 为了增强抗瘤免疫力和逆转由iRFA诱导的免疫抑制.
主要方法:
- 用铜合的ZIF-8纳米颗粒被设计成能够同时提供TH-302和β-lapachone.
- 纳米颗粒被封装在M1巨细胞膜 (CCR2-M) 中,以增强瘤向.
- 纳米治疗策略被评估为其诱导细胞死亡,调节瘤微环境和激活抗瘤免疫力的能力.
主要成果:
- 通过隔离CCL2.2,CCR2-M涂层减少了前瘤巨细胞的透.
- 同时提供β-拉帕和TH-302诱导了协同反应性氧物种 (ROS) 爆发,抑制了瘤生长.
- 治疗激活了cGAS-STING通路,增强了抗原呈现,并招募了细胞毒性T细胞,逆转了免疫抑制.
- 没有观察到与药物相关的毒性.
结论:
- 合理设计的纳米治疗策略有效地限制了iRFA后的残留瘤生长.
- 这种方法提供了一个有希望的免疫调节策略,以克服癌症治疗中的治疗耐药性.
- 仿生纳米粒子显示了针对癌症治疗和免疫系统调节的潜力.
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