下一代CEA-CAR-NK-92细胞对抗固体瘤:克服结直肠癌中的瘤微环境挑战
Alexander Sebastian Franzén1,2, Abdelhadi Boulifa1,2, Clarissa Radecke2
1Berlin Institute of Health at Charité, Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany.
Cancers
|January 23, 2024
概括
一种新的化学抗原受体 (CAR) 自然杀手 (NK) 细胞疗法针对结直肠癌 (CRC) 中的细胞相关癌胚抗原 (CEA). 这种工程化CAR-NK-92细胞疗法表现出强大的抗瘤活性和增强的瘤透,没有兄弟杀伤.
科学领域:
- 免疫治疗是一种免疫疗法.
- 在瘤学瘤学.
- 细胞疗法细胞疗法
背景情况:
- 大肠直肠癌 (CRC) 构成了重大治疗挑战,需要先进的治疗方式.
- 化学抗原受体 (CAR) 自然杀手 (NK) 细胞疗法是CAR T细胞疗法的新兴替代方案.
- 癌胚抗原 (CEA) 是CRC的一个有前途的标,但其脱落使治疗复杂化.
研究的目的:
- 开发和评估下一代CAR结构,针对结直肠癌细胞的细胞相关CEA.
- 增强瘤微环境 (TME) 中的CAR-NK细胞定位,透和有效性.
- 评估工程CAR-NK-92细胞系的安全性和特异性,特别是在兄弟杀戮方面.
主要方法:
- 开发一种针对细胞关联CEA的新型CAR结构,包括PD1和CCR4.
- 使用3D多细胞瘤球体 (MCTS) 模型来模拟CRC TME.
- 在体外评估CEA-CAR-NK-92细胞细胞毒性,指导能力和兄弟杀戮.
主要成果:
- 与CRC细胞系和MCTS模型相比,CEA-CAR-NK-92细胞表现出显著的细胞毒性.
- 该CCR4受体增强了CAR-NK细胞对着CCL17和CCL22配体的定位.
- 卡尔的设计有效地防止了因细胞结合症引起的兄弟杀戮,这表明安全性得到了改善.
结论:
- 工程 CEA-CAR-NK-92 细胞疗法显示为对结直肠癌的精确和有效治疗有前途.
- 结合PD1检查点抑制剂和CCR4受体可以提高治疗潜力.
- 这种方法提供了一个可行的策略,以克服与CEA脱落和TME透相关的挑战.
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