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工程VNP20009表达IL-15&15Rα增加了治疗膀癌的抗瘤免疫力

Bo Liu¹, Kaiwei Wang², Qiaofeng Li¹

¹Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu 215123, China.

|November 12, 2024

概括

通过工程技术分泌Interleukin-15 (IL-15) 和其受体α子单元 (IL-15Rα) 的细菌显示出对膀癌治疗的前景. 将这种疗法与epirubicin化疗相结合,可以改善治疗反应,但没有显著的副作用.

科学领域:

在瘤学瘤学.
生物技术是生物技术.
免疫治疗是一种免疫疗法.

背景情况:

标准的膀癌治疗包括手术和化学疗法或Bacillus Calmette-Guerin (BCG) 的静脉灌注.
N803,一种新型IL-15超激素复合物,已与BCG在BCG不响应的膀癌中显示出有效性.
需要新的治疗策略来改善膀癌治疗结果.

研究的目的:

为了使细菌能够稳定分泌功能性介质素-15及其受体α子单元 (IL-15&15Rα).
评估工程细菌 (15&15Rα@VNP) 单独或与epirubicin结合用于膀癌治疗的静脉灌注的疗效.

主要方法:

使用温度控制等离子体编码IL-15和IL-15Rα的工程减弱的沙门氏菌型 (VNP20009) 产生15&15Rα@VNP.
通过42°C的诱导来实现稳定的IL-15&15Rα分泌,通过热激活15&15Rα@VNP.
在膀癌模型中,单独和连续与epirubicin (EPI) 进行15&15Rα@VNP静脉注射.

主要成果:

热激活的15&15Rα@VNP的肠道灌注证明了作为单一疗法的膀瘤生长的显著抑制.
随着热激活的15&15Rα@VNP随着epirubicin的连续给予,导致治疗反应进一步改善.
组合疗法没有引起显著的不良副作用,表明了有利的安全性.

结论:

工程细菌15&15Rα@VNP可以通过静脉灌注有效治疗膀癌.
15&15Rα@VNP作为一种有前途的补充疗法,用于传统的化疗剂,如epirubicin.
这种方法有可能在临床转化中推进膀癌治疗策略.

关键词:

膀癌是一种癌症.改造的细菌是一种工程细菌.它们的IL-15和15Rα.在VNP20009中,你会看到VNP20009.

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