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精确的瘤免疫疗法通过双门的巨细胞-细菌激活平台

Lin Li¹, Leyang Wu², Liyuan Qiao¹

¹State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023. Jiangsu, PR China.

Trends in biotechnology

|October 31, 2025

概括

这项研究介绍了巨-细菌封装Lytic自动激活协同疗法 (M-BLAST),这是针对向癌症免疫疗法的新系统. M-BLAST使用巨细胞内的工程细菌,由近红外光激活,以安全地破坏瘤并刺激免疫反应.

科学领域:

生物医学工程生物医学工程
癌症治疗癌症治疗
免疫学免疫学免疫学

背景情况:

基于活微生物的免疫疗法显示出希望,但在临床疗效和毒性方面面临挑战.
开发有针对性的输送系统对于提高细菌癌症治疗的安全性和有效性至关重要.

研究的目的:

开发一个双门,巨介导系统 (M-BLAST) 针对细菌瘤的向传递和现场激活.
提高工程细菌在癌症治疗中的治疗潜力,同时确保患者的安全.

主要方法:

M-BLAST利用弱的沙门氏菌菌株被封装在巨细胞中,这些巨细胞被设计成表达GSDMD-N,由近红外 (NIR) 光和铜化物激活.
尼尔射线照射会触发巨细胞灭,导致瘤部位控制的细菌释放.
双关机制 (细菌密度和热冲击) 防止了目标外激活.

主要成果:

局部的NIR照射诱导了通过巨细胞灭的快速和完整的细菌释放.
该系统有效地破坏了免疫抑制瘤微环境 (TME).
观察到一连串的抗瘤免疫反应,显示出显著的治疗潜力.

结论:

M-BLAST 增强了工程细菌在癌症免疫治疗中的实用性.
双门系统通过防止健康组织的意外激活来确保安全.
这种方法为有效和安全的癌症治疗提供了一个有希望的策略.

关键词:

减弱的沙门氏菌通过细胞介导的药物输送.药物有控制释放的释放.巨细胞是一个巨细胞.微生物治疗学微生物治疗学合成生物学合成生物学

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