强制E-选择因子连接物安装增强了收养转移的T细胞的定位和有效性
Yingqin Hou1, Jinfeng Ye1, Ke Qin1
1Department of Molecular and Cellular Biology, The Scripps Research Institute, La Jolla, CA 92037, United States.
bioRxiv : the preprint server for biology
|January 27, 2025
概括
外化,一种新的T细胞修饰,增强了瘤透,并改善了固体瘤和转移的采用T细胞疗法的疗效. 这种方法有望克服当前治疗的局限性.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症治疗 癌症治疗
- 细胞工程 细胞工程
背景情况:
- 收养T细胞转移对血液癌症有效,但由于T细胞透不良,对固体瘤是有限的.
- 白细胞扩散依赖于E-selectin和sialyl Lewis X (sLeX) 相互作用,这对于贩运到瘤部位至关重要.
- 目前的T细胞疗法很难有效地准和透到固体瘤微环境中.
研究的目的:
- 研究增强T细胞透到固体瘤中的方法.
- 为了评估工程T细胞的治疗潜力,强制E-选择因子结合体表达 (sLeX).
- 为了比较细胞表面"exofucosylation"与Golgi向的"Golgi-fucosylation"对T细胞修饰的疗效.
主要方法:
- 针对抗原的特异性T细胞被修改为表达sLeX,使用外化 (用FUT6处理细胞表面) 或戈尔基化 (用Golgi向FUT6过度表达).
- 对两种修饰的T细胞种群的E-选择素结合亲缘关系进行了评估.
- 在各种小鼠癌症模型 (固体瘤,白血病,淋巴瘤,转移) 中评估了T细胞透,治疗疗效和存活率.
主要成果:
- 外化和高尔基化都成功诱导了sLeX表达和E-selectin对T细胞的结合.
- 只有外化T细胞显著增强了对细胞的透到瘤点.
- 外化导致了优越的治疗疗效和在多种癌症模型中改善的生存率,包括固体瘤和转移.
结论:
- 外化是一种可行的策略,可以增强T细胞的定位和透到固体瘤中.
- 这种方法显著提高了采用T细胞治疗的治疗疗效,特别是在固体瘤和转移性疾病中.
- 外化为推进采用T细胞免疫疗法提供了一个有前途的途径.
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