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JCO:病毒特异性T细胞可以抗病毒?

2017-08-08 xuyihan MedSci原创

大家都知道改善异基因造血干细胞移植(HSCT)患者的治愈率需要减少严重病毒感染引起的治疗相关死亡率,但如何减少却是一个问题。有研究表明从有资格的第三方捐助者产生的过继转移的病毒特异性T细胞(VSTs)可能会对接受HSCT的患者产生广泛的抗病毒保护作用,而且是立即可用的现成产品。

大家都知道改善异基因造血干细胞移植(HSCT)患者的治愈率需要减少严重病毒感染引起的治疗相关死亡率,但如何减少却是一个问题。有研究表明从有资格的第三方捐助者产生的过继转移的病毒特异性T细胞(VSTs)可能会对接受HSCT的患者产生广泛的抗病毒保护作用,而且是立即可用的现成产品。

Ifigeneia Tzannou等研究人员建立一个识别5种常见病毒病原体的VSTs库: EB病毒(EBV)、腺病毒(AdV)、巨细胞病毒(CMV)、BK病毒(BKV)和人类疱疹病毒6型(HHV-6)。在一项II期临床试验中将VSTs给予38例患者中45例感染

单次注射累积完全或部分缓解率总体为92%(95% CI,78.1%-98.3%),具体在各个病毒中情况为:BKV100%(n=16)、CMV94%(n=17)、AdV71%(n=7)、EBV100%(n=2)和HHV-6 67%(n=3)。结果显示31例单发感染和7例多发感染临床获益。14例患BKV-相关性出血性膀胱炎的患者中13例在6周后血尿完全消失。注射治疗是安全的,只观察到2次移植物抗宿主病(1级)。通过抗原表位分析追踪VST发现第三方来源的功能性VSTs持续12长达周。

由上述研究可见使用VSTs库是一种可行、安全和有效治疗HSCT后严重且难治性感染的方法,包括2种之前从未被现成产品针对治疗过的病毒(BKV和HHV-6)。除此之外,VSTs的多重特异性保障了广泛的抗病毒覆盖率,有利于治疗患者的多重感染。

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    2018-01-13 lidong40
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    2017-08-10 luominglian113

    学习了,谢谢分享

    0

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    2017-08-10 yahu

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