鉴定Daratumumab治疗多发性骨髓瘤细胞外囊签名的鉴定
Kieran Brennan1,2, Katrine F Iversen3,4, Alfonso Blanco-Fernández5
1School of Biomolecular and Biomedical Science, University College Dublin (UCD), Dublin, Ireland.
Journal of extracellular vesicles
|February 9, 2026
概括
多发性骨髓瘤 (MM) 患者的细胞外囊泡 (EV) 接受达拉图姆 (DARA) 治疗时显示蛋白质水平发生变化. 这些EV蛋白签名可以作为一种非侵入性的液体活检,用于监测治疗反应.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 生物化学 生物化学
背景情况:
- 达拉图穆马布 (DARA) 是治疗多发性骨髓瘤 (MM) 的关键疗法,这是一种血细胞恶性瘤.
- 接受DARA的MM患者的细胞外囊泡 (EV) 显示了蛋白质配置的改变,包括与治疗反应相关的PDL1.
- 识别额外的EV蛋白标记物可以加强对MM患者的监测.
研究的目的:
- 为了识别外围血液 (PB) EVs中的新型蛋白质变化,来自用DARA治疗的MM患者.
- 在EV中开发预测性蛋白质签名,用于MM诊断和DARA治疗反应.
- 探索EV签名作为骨髓采样的非侵入性液体活检替代品的潜力.
主要方法:
- 流细胞测量用于分析MM患者和健康对照的PB EVs上的蛋白质表达.
- 量化了诸如CD31,CD36,CD44,CD8,LAT1,CD38和PDL1之类的蛋白质.
- 采用多变量接收器操作特征 (ROC) 曲线分析来建立诊断和预测签名.
主要成果:
- 与健康对照人群相比,MM PB EVs的CD31,CD36和CD44显著升高,CD8和LAT1降低.
- 在PB EV中CD38,LAT1和PDL1的较高水平与对DARA的长期反应相关.
- 诊断签名 (MM面板) 达到86.4%的灵敏度和91.6%的特异性;预测签名 (响应面板) 达到80%的灵敏度和91.2%的特异性.
结论:
- 在接受DARA治疗的MM患者中发现了两个不同的EV蛋白签名.
- 这些特征表明,它们有可能作为MM诊断和DARA治疗反应监测的非侵入性生物标志物.
- 基于EV的液体活检可以补充或取代MM患者管理的侵入性骨髓采样.
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