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工程细菌驱动的生物混合微机器人通过唤起热致死来增强IL-2免疫疗法

Ping Li¹, Qianying Li¹, Lu Ding²

¹State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Nanchang University, Nanchang 330047, China.

|March 13, 2026

概括

这项研究引入了用于癌症免疫治疗的新型生物混合微机器人,增强了对瘤的Interleukin-2 (IL-2) 输送. 微机器人有效地重新编程瘤微环境,将冷瘤转化为响应性利基,提供强大的抗瘤免疫力.

科学领域:

生物医学工程生物医学工程
癌症免疫疗法癌症免疫疗法
纳米技术纳米技术

背景情况:

干白素-2 (IL-2) 免疫疗法对转移性癌症有希望,但面临毒性和瘤向性差等局限性.
现有的免疫疗法在低响应率和全身副作用方面扎.

研究的目的:

开发一个生物混合微机器人 (IL-2@Z/C/A) 用于向和增强的癌症免疫治疗.
通过改善药物输送和减少非目标效应,克服传统IL-2疗法的局限性.

主要方法:

通过使用IL-2变体分泌的Nissle 1917 (EcN) 工程设计了一种生物混合微机器人,该机器人被涂上了以热性伊米达酸框架-8 (ZIF-8) 的Nissle 1917 (EcN).
微机器人被光敏化剂和催化剂染色,旨在在酸性瘤微环境 (TME) 中释放载荷.
在B16F10黑色素瘤模型中研究了激素灭亡诱导,氧气生成和PD-L1阻塞的协同效应.

主要成果:

ZIF-8外保护了细菌和货物,使瘤定位和控制释放在TME中.
IL-2@Z/C/A诱导了热,免疫性细胞死亡和促炎性细胞因子的产生.
catalase活性产生氧气,缓解瘤缺氧和免疫抑制,而IL-2释放逆转T细胞耗尽.
结合疗法通过重新编程免疫抑制性TME并引起强大的抗瘤免疫力,实现了近乎完整的瘤回归.

结论:

生物混合微机器人 (IL-2@Z/C/A) 为空间控制的癌症免疫治疗提供了一个新的策略.
这种方法有效地将免疫学上"冷"的瘤转化为响应的利基,突出了增强抗瘤反应的潜力.

关键词:

聚合诱导的排放光敏化剂光敏化剂工程细菌是通过工程设计的细菌.免疫疗法免疫疗法介质蛋白-2 介质蛋白-2 介质蛋白-2 热致灭 (pyroptosis) 是一种致的过程.

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