向CD70的CAR-NK细胞克服BCMA下调并改善高风险多发性髓瘤模型中的生存率
Paul Lin1, Sunil Acharya1, Francia Reyes-Silva1
1The University of Texas MD Anderson Cancer Center, Houston, TX, United States.
Blood cancer discovery
|October 27, 2025
概括
CD70在高风险多发性骨髓瘤 (MM) 中升高,与生存率差相关. 针对CD70的化学抗原受体 (CAR) 自然杀手 (NK) 细胞表现出强大的抗髓瘤活性,支持其作为治疗点的使用.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
背景情况:
- CD70在多发性骨髓瘤 (MM),一种类型的血液癌症中高度表达.
- 升高的CD70水平与高风险的MM和患者生存率降低有关.
研究的目的:
- 研究CD70作为多发性骨髓瘤的潜在治疗点.
- 在临床前MM模型中评估针对CD70的仿真抗原受体 (CAR) 自然杀手 (NK) 细胞的疗效.
主要方法:
- 在两组患者中分析CD70表达,使用单细胞RNA测序,流细胞计和免疫组织化学.
- 开发和测试与CD27和IL-15 (CAR27/IL-15 NK细胞) 工程的CAR-NK细胞,对抗CD70阳性MM细胞.
- 在体外和体内评估CAR27/IL-15NK细胞的疗效,包括BCMA-Knockout模型.
主要成果:
- 证实CD70表达在高风险MM类别中升高,与生存率差相关.
- CAR27/IL-15 NK细胞在体外和体内都对CD70阳性MM细胞表现出强烈的细胞毒性.
- 工程NK细胞的疗效与CAR27/IL-15 T细胞相当,甚至在BCMA-Knockout模型中也是有效的.
结论:
- CD70代表了高风险多发性骨髓瘤的有希望的治疗点.
- 向CD70的CAR-NK细胞提供了潜在的治疗策略,特别是在BCMA导向治疗后复发的患者.
- 这些发现为正在进行的针对CD70的CAR-NK细胞的临床试验提供了临床前验证.
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