非血缘异基因造血干细胞移植后供者特异性aKIR基因的分布特征

目的分析非血缘异基因造血干细胞移植(allo-HSCT)后可供检测的供者特异性激活性杀伤细胞免疫球蛋白样受体(aKIR)基因的分布、比例及在临床中的应用价值。方法采用序列特异性引物聚合酶链反应(PCR-SSP)方法,回顾性分析216对供受者KIR基因分型,探讨可供检测的供者特异性aKIR的临床价值。结果在216例患者接受非血缘HSCT后可检测到供者特异性KIR基因为53.7%(116/216),在供受者KIR基因型不合中占78.3%(112/143),在供受者KIR基因型相合中占5.5%(4/73)。116例患者可检测到供者特异性KIR,99.1%(115/116)为aKIR基因。55对供受者...

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Published in中华血液学杂志 Vol. 38; no. 5; pp. 421 - 426
Main Author 张环环 何军 鲍晓晶 胡星 王苗 张静 吴小津
Format Journal Article
LanguageChinese
Published 215006,苏州大学附属第一医院、江苏省血液研究所 2017
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ISSN0253-2727
DOI10.3760/cma.j.issn.0253-2727.2017.05.013

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Summary:目的分析非血缘异基因造血干细胞移植(allo-HSCT)后可供检测的供者特异性激活性杀伤细胞免疫球蛋白样受体(aKIR)基因的分布、比例及在临床中的应用价值。方法采用序列特异性引物聚合酶链反应(PCR-SSP)方法,回顾性分析216对供受者KIR基因分型,探讨可供检测的供者特异性aKIR的临床价值。结果在216例患者接受非血缘HSCT后可检测到供者特异性KIR基因为53.7%(116/216),在供受者KIR基因型不合中占78.3%(112/143),在供受者KIR基因型相合中占5.5%(4/73)。116例患者可检测到供者特异性KIR,99.1%(115/116)为aKIR基因。55对供受者KIR基因型为Bx-AA,可分别检测Bx1基因型中KIR3DS1、KIR2DL5A、KIR2DS5、KIR2DS1;Bx2基因型中KIR3DS1、KIR2DL5A、KIR2DS3、KIR2DS1;Bx3基因型中KIR2DS2、KIR2DL2;Bx4基因型中KIR2DS2、KIR2DL2、KIR3DS1、KIR2DL5A、KIR2DS5、KIR2DS1。44对供受者AA-AB不合中,有16对可检测供者特异性的KIR2DS4(FUL)基因。在143对供受者KIR基因型不合中,可检测供者特异性KIR基因频率由高到低分别为KIR2DS1(35.7%)、KIR3DS1(32.9%)、KIR2DS5(29.4%)、KIR2DS4(FUL)(25.9%)、KIR2DL2(25.2%)、KIR2DS2(24.5%)、KIR2DS3(21.7%)、KIR3DL1(8.4%)。结论非血缘allo-HSCT后可检测的供者特异性aKIR基因主要分布在供受者KIR基因型不合中,且因供受者KIR基因型不同而有差异,但在频率较高的KIR-AA、Bx1、Bx2、Bx3、Bx4中有供者特异性较高的aKIR,其为研究aKIR基因对移植预后的影响奠定了实验基础。
Bibliography:Killer cells, natural; Receptors, KIR; Hematopoietic stem cell transplantation
ObjectiveTo analyze the distribution and proportion of donor-specific activated killer cell immunoglobulin like receptor (aKIR) genes and their clinical application values in unrelated allogeneic hematopoietic stem cell transplantation (allo-HSCT) .MethodsRetrospective analyses of KIR genotyping using polymerase chain reaction with sequence specific primers (PCR-SSP) were performed in 216 pairs of donors and recipients.ResultsThe frequency of donor-specific KIR genes was 53.7% (116/216) in 216 patients receiving unrelated allo-HSCT, with the frequency of 78.3% (112/143) in the KIR genes mismatched group and 5.5% (4/73) in matched group. Of the 116 patients with detectable donor-specific KIR genes, 99.1% (115/116) patients had various donor-specific aKIR genes. Among 55 pairs of donors' KIR-Bx genotype and patients' KIR-AA genotype group, the most commonly observed genotypes were Bx1, Bx2, Bx3, Bx4, in which the donor-specific KIR ge
ISSN:0253-2727
DOI:10.3760/cma.j.issn.0253-2727.2017.05.013