在骨髓肉瘤中低氧下未改变的NKG2D-CAR T细胞功能 in vitro
Laura Hidalgo1,2,3, Patricia Garcia-Rodriguez4,5, Isabel Cubillo4
11Biomedical Innovation Unit, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), 28040, Madrid, Spain. laura.hidalgo@ciemat.es.
Cancer immunology, immunotherapy : CII
|February 12, 2026
概括
在儿科骨髓瘤 (OS) 模型中,低氧不会损害NKG2D化学抗原受体 (CAR) T细胞功能. 这些发现挑战了仅仅缺氧阻碍瘤微环境中的CAR T细胞疗效的观点.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 生物医学研究生物医学研究
背景情况:
- 骨肉瘤 (OS) 是一种流行的儿科骨癌,复发或转移病例的存活率较低.
- 免疫疗法,特别是仿真抗原受体 (CAR) T 细胞,对OS治疗有希望.
- 瘤微环境 (TME),特别是缺氧,是有效免疫治疗的已知障碍.
研究的目的:
- 为了研究缺氧对NKG2D-CAR T细胞功能在骨髓瘤的影响.
- 确定缺氧是否有助于在OS异种移植模型中观察到的抑制性TME.
主要方法:
- 实验室骨髓瘤模型被用来评估缺氧的影响.
- 分析了HIF-1α,NKG2D连接体和免疫检查点的表达.
- 功能性测试评估了NKG2D-CAR T细胞表型,活性和在低氧条件下的细胞因子分泌.
主要成果:
- 缺氧并没有降低NKG2D连接体表达或改变免疫检查点配置文件.
- NKG2D-CAR T细胞表型,活性和细胞因子分泌不受体外缺氧的影响.
- 在低氧条件下,CAR T细胞对3D骨髓瘤球体的疗效保持不变.
结论:
- 单独的缺氧不会损害体外NKG2D-CAR T细胞在骨髓瘤中的疗效.
- 需要进一步的研究来了解缺氧如何与其他TME因子相互作用以调节CAR T细胞行为.
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