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Blood:T细胞免疫表型的深度分析可预测HCT受体CMV再激活的风险

2019-01-10 MedSci MedSci原创

CMV是进行造血细胞移植(HCT)的患者最常见的病毒感染。研究人员对CMV特异性T细胞进行深度表型分析,来预测异体HCT后的CMV预后。研究人员通过13色流式细胞仪,在临床3个不同的CMV血清阳性的HCT患者亚组中,研究体外CD8+T细胞在应对CMV-pp65多肽刺激时的产生细胞因子。这3个亚组分别是1)精选对照(EC,19例):无CMV DNA;2)自然对照(SC,16例):无抗病毒治疗即自愈的

CMV是进行造血细胞移植(HCT)的患者最常见的病毒感染。研究人员对CMV特异性T细胞进行深度表型分析,来预测异体HCT后的CMV预后。

研究人员通过13色流式细胞仪,在临床3个不同的CMV血清阳性的HCT患者亚组中,研究体外CD8+T细胞在应对CMV-pp65多肽刺激时的产生细胞因子。这3个亚组分别是1)精选对照(EC,19例):无CMV DNA;2)自然对照(SC,16例):无抗病毒治疗即自愈的低水平的CMV DNA;3)非对照(NC,21例):有明显的临床CMV。

两个CMV特异性的CD8+T细胞功能性亚集与CMV的风险强烈相关:i)在NC组升高水平中发现的非保护性特点(NPS;IL2-IFNγ+TNFα-MIP1β+);ii)在NC组低水平中发现的保护性特点(PS;IL2+IFNγ+TNFα+MIP1β+)。

高水平的NPS和低水平的PS与临床CMV严重感染的100天累计发病率增加相关(35% vs 5%;p=0.02;和40% vs 12%,p=0.05)。当这些特征(低水平的PS和高水平的NPS)组成一个复合的生物标志物时,可获得最高的预测价值(67% vs 10%;p<0.001)。根据类固醇的应用和供体类型校正后,该复合生物标志物仍与临床CMV感染风险增加5倍相关。

综上所述,CMV特异性CD8+T细胞的细胞因子特征对CMV再活化风险具有可靠的预测价值,对HCT受体的管理决策提供指导。


原始出处:

Jose F. Camargo,et al. Deep functional immunophenotyping predicts risk of cytomegalovirus reactivation after hematopoietic cell transplantation. Blood 2018 :blood-2018-10-878918; doi: https://doi.org/10.1182/blood-2018-10-878918

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    2019-11-20 xlysu
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    2019-06-05 wolongzxh
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    2019-01-12 mjldent
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    2019-01-12 tastas

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