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一个经过工程设计的α1β1整合素介导的FcγRI信号组件,用于控制增强的CAR巨细胞激活和细胞分裂

Fuyu Du¹, Zixuan Ye¹, Anna He¹

¹School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710071, PR China; Engineering Research Center of Molecular & Neuroimaging, Ministry of Education, Xi'an, Shaanxi 710071, PR China.

Journal of controlled release : official journal of the Controlled Release Society

|December 1, 2024

概括

使用α1β1整合素介导的FcγRI信号传导的工程化化学抗原受体巨细胞 (CAR-M) 显示出对固体瘤的增强激活和抗瘤活性. 与传统的CD3ζ CAR-M方法相比,这种新的CAR-M设计可以改善瘤控制和存活率.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
生物技术是生物技术.

背景情况:

固体瘤治疗面临挑战,引发了对仿真抗原受体巨细胞 (CAR-M) 的兴趣.
CAR域设计显著影响CAR-M抗瘤功效,但仍然不太了解.
优化CAR-M需要新的信号组件来增强激活和向破坏癌细胞.

研究的目的:

开发和评估一种使用α1β1整合素介导的Fc-玛受体I (FcγRI) 信号的新型CAR-M结构.
评估这种工程化CAR-M (ACT CAR-M) 对巨细胞激活和抗瘤细胞酶 in vitro 和 in vivo 的影响.
在临床前癌症模型中,将ACT CAR-M的抗瘤疗效与传统的CD3ζ CAR-M进行比较.

主要方法:

工程CAR-M包含一个α1β1整合素介导的FcγRI信号组件.
在实验室中评估使用原始人类巨细胞的巨细胞激活和细胞反应.
在皮下瘤和癌性瘤小鼠模型中的体内评估,以确定抗瘤作用和存活率.

主要成果:

在实验室中,ACT CAR-M证明了增强的巨细胞激活和特定的细胞化.
在多种癌症模型中,ACT CAR-M与CD3ζ CAR-M相比,观察到瘤控制和生存率的显著改善.
RNA测序显示,α1β1整合素介导的FcγRI参与通过促炎M1通路增强了抗瘤免疫力.

结论:

α1β1整合素介导的FcγRI信号传递是加强对固体瘤的CAR-M免疫疗法的强有力的组成部分.
ACT CAR-M代表了一种先进的CAR领域工程策略,有可能扩大临床应用.
这种方法为克服固体瘤的治疗耐药性提供了一个有希望的新途径.

关键词:

通过CAR-M治疗治疗.人类表皮生长因子受体2 (HER2)巨细胞激活活动巨细胞的细胞化.信号域是一个信号域.

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