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CCLM:通过数字PCR检测早期混合造血嵌合

2017-07-27 MedSci MedSci原创

同种异体干细胞移植(HSCT)后的临床决策在部分程度上取决于对造血嵌合体的分析。多态性短串联重复序列(STR-PCR)的聚合酶链反应目前被认为是移植后嵌合体监测的黄金标准。然而,这种方法已经显示出了一些局限性。新兴技术如数字PCR(dPCR)已被应用于造血嵌合体检测。因为之前的研究是对有限的患者群体在短期随访中进行的,所以以前的报告对dPCR的临床应用尚不清楚。

近日,国际杂志 《Clinical Chemistry and Laboratory Medicine》在线发表一项关于在经历性别不匹配造血干细胞移植的患者中,通过数字液滴PCR进行早期混合造血嵌合检测的研究。

同种异体干细胞移植(HSCT)后的临床决策在部分程度上取决于对造血嵌合体的分析。多态性短串联重复序列(STR-PCR)的聚合酶链反应目前被认为是移植后嵌合体监测的黄金标准。然而,这种方法已经显示出了一些局限性。新兴技术如数字PCRdPCR)已被应用于造血嵌合体检测。因为之前的研究是对有限的患者群体在短期随访中进行的,所以以前的报告对dPCR临床应用尚不清楚。

为了比较造血嵌合检测时间和检测率,研究人员分析了使用STR-PCRdPCR进行性别错配HSCT591个患者样本中的155例。此外,研究人员还建立了两种方法在检测已知比例制备的人造DNA混合物和临床样品中之间的相关性。

研究发现根据人造DNA混合物分析,两种方法之间的相关系数为0.99460.9732dPCR的检测限为0.01%。在供体和受体DNA157个样品中,dPCR66个样品中检测出混合嵌合体(MC)。在HSCTn = 32)后复发的患者组中,与STR-PCR相比,dPCR15例这些患者中检测到MC较早。对于dPCRSTR-PCRMC检测到复发的平均时间分别为155天(范围:13-385天)和65天(范围:0-203天)。

研究表明,dPCR是一种可以对造血嵌合体进行灵敏和准确量化的方法,对早期的MC检测能与STR-PCR相比。

原始出处:

Waterhouse, Miguel / Pfeifer, Dietmar, et al.Early mixed hematopoietic chimerism detection by digital droplet PCR in patients undergoing gender-mismatched hematopoietic stem cell transplantation.

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    2017-07-29 Tommy1950
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    2017-07-29 俅侠
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    2017-07-29 howi
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    2017-07-29 明天会更好!

    谢谢分享,很不错。

    0

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    2017-07-28 suibian2007bbb

    学习

    0

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    2017-07-27 1dd8c52fm63(暂无匿称)

    学习学习

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