用NKG2D-CAR T细胞准衰老细胞
Yushuang Deng1, Avadh Kumar1,2, Kan Xie1
1Translational Biogerontology Lab, German Center for Neurodegenerative Diseases (DZNE), Venusberg-Campus 1/99, 53127, Bonn, Germany.
Cell death discovery
|May 4, 2024
概括
这项研究表明NKG2D化学抗原受体 (CAR) T细胞可以消除衰老细胞. 这些工程T细胞通过准衰老细胞来治疗与年龄相关的疾病有望出现.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 老年学是一门学科.
背景情况:
- 细胞衰老驱动与年龄相关的组织功能障碍和与衰老相关的分泌表型 (SASP).
- 向衰老细胞 (衰老) 是对抗衰老和相关疾病的治疗策略.
- 化学抗原受体 (CAR) T细胞疗法为选择性老化提供了一个潜在的方法.
研究的目的:
- 研究NKG2D CAR T细胞在消除压力诱导的衰老细胞中的有效性.
- 为了评估NKG2D CAR T细胞与衰老细胞的向特异性.
- 探索NKG2D CAR T细胞作为老化疗法的潜力,特别是对大脑衰老的治疗.
主要方法:
- 产生NKG2D CAR T细胞并进行体外检测.
- 在小鼠胚胎纤维细胞 (MEFs) 和星球细胞 (AST) 中使用基因毒性和氧化应激诱导细胞衰老.
- 在衰老细胞上评估NKG2D配体 (NKG2DL) 表达.
- 对NKG2D CAR T细胞对老化和非老化细胞的细胞毒性的评估.
主要成果:
- 基因毒性和氧化应激诱导了NKG2DLs在衰老的MEF和AST上的高表达.
- NKG2D CAR T 细胞对衰老细胞表现出强大的细胞毒性.
- NKG2D CAR T 细胞对非衰老细胞具有最小的毒性,这表明其特异性很高.
结论:
- 在体外,NKG2D CAR T细胞有效地向并消除压力诱导的衰老细胞.
- 这项研究提供了NKG2D CAR T细胞针对衰老的大脑细胞的第一个证据.
- NKG2D CAR T 细胞疗法代表了一种新的老化策略,在与衰老相关的疾病中具有潜在的应用.
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