造血原生细胞计数作为在全源干细胞移植期间的异位产品中的潜在定量标志物
Lunhui Huang1,2, Liangyi Liu1,2, Zhen Song1,2
1State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China.
Transfusion
|December 30, 2023
概括
造血原生细胞计数 (XN-HPC) 能够有效地评估全源移植中的干细胞产量,但对自身移植的可靠性较低. 这种代孕标志物在健康捐赠者中显示出良好的相关性,有助于对外围血液造血干细胞移植 (PB-HSCT) 的评估.
科学领域:
- 血液学 血液学 血液学
- 移植医学 移植医学
- 细胞分析 细胞分析
背景情况:
- 造血干细胞 (HSC) 的质量和数量对于成功的外周血液造血干细胞移植 (PB-HSCT) 是至关重要的.
- 通过流细胞计量计量CD34+细胞计数是黄金标准,但是劳动密集型和昂贵的.
- 来自Sysmex XN分析仪 (XN-HPC) 的血造原生细胞 (HPC) 计数被提议作为干细胞评估的替代标记物.
研究的目的:
- 为了评估XN-HPC和CD34+细胞计数在化产品中的相关性和一致性.
- 确定XN-HPC作为代用标记在异构和自身PB-HSCT环境中的实用性.
主要方法:
- 来自全基性捐赠者和接受PB-HSCT的自主患者的非样本的分析.
- 使用相关性和一致性分析,将XN-HPC计数与金标准CD34+细胞计数进行比较.
- 接收器运行特性 (ROC) 曲线分析以确定最佳的XN-HPC值.
主要成果:
- 在健康的全基因捐赠者中观察到XN-HPC和CD34+计数之间的强相关性 (R=0.852) 和一致性.
- 自主患者中发现的相关性较弱 (R=0.375),特别是那些使用plerixafor或多发性髓瘤的患者.
- 1127 × 10^6/L的XN-HPC值预测了足够的CD34+干细胞产量,具有92%的灵敏度和72%的特异性 (AUC=0.852).
结论:
- XN-HPC 作为足够的定量标记,用于对干细胞的评估,对全基性 HSCT 收获产量进行评估.
- XN-HPC不是可靠的替代体标志物用于自主HSCT干细胞评估.
- 这些发现支持在特定的移植场景中使用XN-HPC,特别是在异构程序中.
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