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同时刺激CD28/CD40信号分子增强了CAR-T细胞的疗效和干细胞性
Wannakorn Khopanlert1,2,3, Pongsakorn Choochuen2,4, Kajornkiat Maneechai1,2,3
1Stem Cell Laboratory, Hematology Unit, Division of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
Molecular therapy. Oncology
|July 25, 2024
概括
用双重共刺激分子 (CD28和CD40) 改造的CD19 CAR-T细胞表现出增强的持久性和强大的抗瘤活性,对抗B细胞恶性瘤. 这种修改改善了T细胞的增殖,记忆和长期疗效 in vivo.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞疗法细胞疗法
- 在瘤学瘤学.
背景情况:
- 化学抗原受体T (CAR-T) 细胞疗法对B细胞恶性瘤有希望,但受到T细胞损失的限制.
- 癌症复发通常是由于CAR-T细胞的持续性不足.
研究的目的:
- 通过结合双T/B细胞共刺激分子 (CD28和CD40) 来增强CD19 CAR-T细胞的持久性和抗瘤功效.
主要方法:
- 开发具有集成CD28和CD40信号域的CD19.28.40zCAR-T细胞.
- 在抗原暴露时评估信号通路 (NF-κB,RelB,NFAT).
- 在体外和体内对CAR-T细胞增殖,细胞毒性,记忆表型和耗尽标记的评估.
- 基因表达特征,以确定基因表达特征的基因机制,以确定基因表达特征的基因表达特征的基因表达特征.
主要成果:
- CD19.28.40z CAR-T细胞表现出增强的增殖,持续的抗瘤细胞毒性,并保留了具有减少枯竭表型的中央记忆T细胞子集.
- 在体内研究表明,B细胞淋巴细胞白血病和B细胞非霍奇金淋巴瘤模型中的有效和持续的抗瘤活性.
- 基因表达分析揭示了T细胞干细胞和与记忆相关的基因 (SELL,IL-7r,TCF7,KLF2) 的丰富,以及对亡和疲劳途径的下调.
结论:
- 通过CD28和CD40进行双重共刺激,显著提高CD19CAR-T细胞的持久性,增殖和抗瘤功效.
- 这一策略提供了一种有希望的方法来克服CAR-T细胞耗尽,并改善复发性/耐药B细胞恶性瘤的结果.
关键词:
在CAR-T细胞中.CD19 CD19 CD19 CD19 CD19 CD19 CD19 CD19 CD19 CD19 CD19 CD19 CD19 CD19 CD19CD28/CD40 CD28/CD40 CD28/CD40 CD28/CD40 CD40 CD28/CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD28 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD4 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD4 CD4 CD4 CD4 CD4 CD4 CD4 CD4 CD4 CD4 CD4 CD4 CD4 CD5 CD4 CD5 CD7 CD4 CD4 CD4 CD4 CD5 CD7 CD7 CD7 CD7 CD7 CD8 CD7 CD8 CD8 CD7 CD8 CD8 CD8 CD8 CD8 CD8 CD8 CD9 CD8 CD8 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9 CD9CD37 CD37 CD37 CD37 CD37 CD37 CD37 CD37 CD37 CD37 CD37 CD37 CD37 CD37MT: 定期发行 定期发行共同刺激的领域.相关概念视频
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