通过CAR19-T/NK细胞和循环阿巴胺-药物合物 (ApDC) 组合治疗,可提高免疫治疗的疗效
Ling-Qi Kong1,2,3, Su-Yun Chen3, Xu Cui3
1College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian, China.
Molecular and cellular biochemistry
|July 13, 2025
概括
这项研究开发了一种针对PTK7.7的新型循环阿胺-药物联合体 (C-ApDC). 与CAR19-T/NK细胞的C-ApDC联合疗法显著增强了抗瘤疗效,克服了细胞疗法中的耐药性.
科学领域:
- 在瘤学瘤学.
- 免疫疗法是一种免疫疗法.
- 生物结合的生物结合
背景情况:
- 基于化学抗原受体 (CAR) 的细胞疗法,包括CAR19-T和CAR-NK细胞,在治疗急性淋巴细胞白血病 (ALL) 等血液恶性瘤方面表现有前途.
- 耐药性仍然是一个重大挑战,限制了目前基于CAR的细胞疗法的长期有效性.
研究的目的:
- 开发一种新型的组合疗法,使用阿普他默-药物联合体和CAR19-T/NK细胞来克服耐药性并增强抗瘤功效.
- 设计和合成一个循环的阿巴 - 药物合物 (C-ApDC) 向蛋白氨酸激酶-7 (PTK7) 以提高稳定性和疗效.
主要方法:
- 合成了一种针对PTK7的新型循环胺-药物合物 (C-ApDC),并构建了CD19 CAR-T和CAR-NK细胞.
- 通过阿加凝电泳测定C-ApDC稳定性,通过流细胞计测定结合特异性,通过CCK-8检测测定细胞毒性.
- 使用流细胞计评估了C-ApDC与CAR19-T/NK细胞的协同作用,并验证了C-ApDC-纳米体结合组合疗法.
主要成果:
- 开发的C-ApDC表现出优越的稳定性,相比于线性aptamer-药物合物.
- 在体外,C-ApDC专门结合并有效杀死PTK7表达的瘤细胞.
- 使用C-ApDC和CAR19-T/NK细胞的联合治疗显著增强了瘤细胞细胞毒性,并证明了C-ApDC-纳米体结合物的高稳定性.
结论:
- 一种利用C-ApDC和CAR19-T/NK细胞的新型组合疗法已成功开发,提供增强的抗瘤活性.
- 这种创新方法为克服CAR-T耐药性和提高基于CAR的细胞疗法的疗效提供了一个有希望的策略.
- 这项研究突出了阿普他默-药物合物与CAR细胞疗法结合治疗具有挑战性的恶性瘤的潜力.
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