PD1+ TIGIT+2B4+KLRG1+ 细胞可能是治疗BCMA导向化学抗原受体T细胞疗法患者的T细胞功能障碍的基础
Ameet K Mishra1, Timothy M Schmidt1, Ella B Martell1
1Department of Medicine, Division of Hematology and Oncology, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin.
Transplantation and cellular therapy
|November 15, 2023
概括
卡特-T疗法对复发性/耐药性多发性骨髓瘤 (RRMM) 是有前途的,但复发很常见. 这项研究揭示了在RRMM和后CAR-T复发患者中明显的T细胞表型和增加的共抑制标记,表明T细胞内在因素有助于抵抗.
科学领域:
- 免疫学 免疫学 免疫学
- 血液学 血液学 血液学
- 在瘤学瘤学.
背景情况:
- 化学抗原受体T细胞 (CAR-T) 疗法在复发性/耐药性多发性骨髓瘤 (RRMM) 中提供了显著的反应.
- 在CAR-T治疗后复发很常见,抵抗机制不完全理解.
- 假设T细胞内在因素有助于CAR-T治疗失败.
研究的目的:
- 研究多发性骨髓瘤进展和CAR-T后复发中的T细胞表型变化.
- 确定RRMM中CAR-T耐药性的潜在T细胞内在机制.
主要方法:
- 骨髓吸收物的光谱流细胞测量分析.
- 在健康捐赠者,RRMM患者和CAR-T后复发病例中比较T细胞表型.
主要成果:
- 与健康捐赠者和早期髓瘤阶段相比,在RRMM和CAR-T后复发病例中观察到明显的T细胞表型.
- 在RRMM和后CAR-T复发队列中发现了新的双阴性CD3+T细胞.
- 在RRMM和CAR-T后复发患者中的T细胞经常表达共抑制标记物 (PD1,TIGIT,2B4,KLRG1).
结论:
- 由独特的表型和共抑制标记物的表达特征的T细胞内在因素,在RRMM中对CAR-T治疗的耐药性起作用.
- 了解这些T细胞的变化可以指导克服CAR-T耐药性的策略,并改善患者的治疗结果.
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