对达沙替尼和波纳替尼用于控制CD123 CAR-T细胞功能的评估
Charles-Frédéric Mantion1, Sabeha Biichlé1, Xavier Roussel1,2
1Université Marie et Louis Pasteur, EFS, INSERM, RIGHT (UMR 1098), 25000 Besançon, France.
Molecular therapy. Oncology
|January 1, 2026
概括
像达沙替尼这样的氨酸激酶抑制剂 (TKI) 可以反向控制CD123 CAR-T细胞 (CAR123) 的活性. 达沙替尼减少了CAR123对内皮细胞的毒性,同时在BPDCN和AML中保持了抗白血病作用.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 药理学 药理学 是一个学科.
背景情况:
- CD123 CAR-T细胞 (CAR123) 显示出神经质血细胞状树突细胞瘤 (BPDCN) 和CD123+急性髓性白血病 (AML) 的前景.
- 卡尔-T细胞激活可以创造一种促炎性环境,导致CD123在内皮细胞上升调节,以及潜在的点/瘤外毒性.
研究的目的:
- 为了评估达沙替尼和波纳替尼,两种氨酸激酶抑制剂 (TKI),可逆抑制CAR-T细胞功能的能力.
- 为了确定TKI是否可以减轻CAR-T细胞诱导的内皮毒性,同时保持抗白血病活性.
主要方法:
- 在体外共同培养模型中,使用CAR123与BPDCN和AML细胞系.
- 评估CAR-T细胞激活标记物 (CD69,CD25),细胞因子分泌 (TNF-α,IFN-γ),脱粒化 (CD107a) 和白血病细胞杀死.
- 在临床相关度下对TKI可逆性和疗效的评估.
主要成果:
- 达沙替尼和波纳替尼都减少了CAR123的激活,细胞因子的分泌,脱粒和白血病细胞的杀死,抑制是可逆的.
- 达沙替尼在临床相关度 (50nM) 中有效抑制了细胞因子分泌和CAR-T细胞对内皮细胞的细胞毒性.
- 达沙替尼仅对白血病细胞的细胞毒性略有降低,这表明有可能平衡疗效和安全性.
结论:
- 达沙替尼可用于最大限度地减少对内皮细胞的潜在CAR123毒性,而不会影响BPDCN和AML的抗白血病作用.
- 如果发生毒性,可以使用更高剂量的达沙替尼完全抑制CAR-T细胞功能.
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