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抗原结合亲和力是CD5CAR-T细胞持久抗瘤活性的一个关键决定因素

Jeong-Hoon Jeong¹, Yu Ri Seo¹, Seung Rok Yu¹

¹Curocell Inc., Daejeon 34002, Republic of Korea.

Molecular therapy. Oncology

|March 11, 2026

概括

在仿真抗原受体 (CAR) -T细胞疗法中调节抗原结合亲和力,减少T细胞兄弟杀伤和疲劳. 低亲和度的CD5CAR-T细胞显示出改善抗瘤活性和简化制造的前景.

科学领域:

免疫治疗是一种免疫疗法.
细胞疗法细胞疗法
在瘤学瘤学.

背景情况:

T细胞兄弟杀伤是化学抗原受体 (CAR) -T细胞疗法的主要限制,阻碍了最佳的抗瘤疗效.
克服T细胞兄弟杀戮的现有策略通常涉及复杂的基因编辑技术.

研究的目的:

研究抗原结合亲和度调制作为减轻T细胞兄弟杀戮的策略.
开发和评估低亲和度CD5特异性CAR-T细胞,以减少兄弟杀伤和T细胞耗尽.

主要方法:

通过使用单克隆抗体,设计具有不同抗原结合亲和性的CD5特异性CAR-T细胞.
将低亲和性CAR-T细胞的兄弟杀伤和T细胞耗尽水平与高亲和性对应细胞进行比较.

主要成果:

与高亲和度版本相比,低亲和度CD5CAR-T细胞显示T细胞兄弟杀伤显著减少.
在低亲缘关系的CAR-T细胞输液产品中观察到T细胞耗尽的减少.
这些结果表明与改善的长期抗瘤反应存在相关性.

结论:

抗原结合亲和度调节是一种有效的策略,可以在CAR-T细胞疗法中减轻T细胞兄弟杀伤.
这种方法为CAR-T细胞制造提供了基因编辑的更简单的替代方案.
优化亲和力可能会提高治疗结果,并简化CD5CAR-T细胞的产生.

关键词:

CD5 卡尔-T 细胞 MT: 常规的常规的常规的在T细胞恶性瘤中.亲缘关系调整调整

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