摘要
目的研究造血干细胞供者NK细胞表面的KIR3DL1表达水平。方法对92例造血干细胞供者采用序列特异性引物PCR、基因测序法进行KIR和HLA基因分型,流式细胞术检测KIR3DL1的表达,并分析不同KIR基因型、单倍型、KIR/HLA受配体模式组KIR3DL1表达水平的差异性。结果92例供者中KIR.A/A、Bx1、Bx2基因型的频率分别为46.74%(43/92)、18.48%(17/92)、9.78%(9/92);KIR—A、B1、B2、B3单体型频率分别为70.33%(128/182)、10.99%(20/182)、7.14%(13/182)、4.39%(8/182);KIR3DL1识别HLA.BW4/BW4、HLA.BW4/BW6、HLA—BW6/BW6配体的频率分别为13.79%、67.81%、18.39%(P〈0.001)。在基因型KIR—A/A、KIR—A/B、KIR—B/B组KIR3DL1的中位表达水平分别为18.77%(3.11%~49.24%)、13.14%(1.70%~63.32%)、0.37%(0.20%~2.60%),两两比较差异均有统计学意义(P〈0.05)。KIR—A/A组KIR3DL1的中位表达水平高于KIR—Bx基因型且着丝粒端2DL2阴性组[11.20%(3.50%~36.08%)](P=-0.019)。KIR3DL1识别HLA.BW4/BW4纯合和HLA—BW4/BW6杂合组KIR3DL1中位表达水平[17.61%(1.40%~49.24%)]高于HLA—BW6/BW6纯合不识别组[10.60%(3.50%~18.56%)](P=0.006)。结论KIR3DL1的表达水平在不同KIR基因型、单倍型以及不同HLA配体组中均存在差异。
Objective To study KIR3DL1 expression level on NK cell surface of normal donors for hematopoietic stem cell transplantation (HSCT). Methods Ninety-two donors were performed by using of KIR genotyping, HLA high resolution genotyping and KIR3DL1 expression level using sequencebased testing(SBT), PCR- sequence specific primer (SSP) and flow cytometry methods. Results In 92 donors, the frequencies of KIR-A/A, Bxl, Bx2 for common genotypes were 46.74% (43/92), 18.48% (17/92) and 9.78% (9/92) respectively (P〈0.001); KIR-A, B 1, B2, B3 for common KIR haplo-type were 70.33% (128/182), 10.99% (20/182), 7.14% (13/182) and 4.39% (8/182) respectively (P〈0.001); the frequencies of HLA-BW4/BW4, HLA-BW4/BW6, BW6/13W6 ligands were 13.79%, 67.81% and 18.39% respectively (P〈0.001). KIR3DL1 middle expression level among haplo-type KIR-A/A and KIR-Bx, KIR-B/B were 18.77%(3.11%-49.24%), 13.14%(1.70%-63.32%) and 0.37%(0.20%-2.60%) respectively (P〈0.05). KIR3DL 1 expression level E 18.77% (3.11%-49.24% ) ] in haplo-type KIR-A/A was higher than haplo-type KIR-Bx at the same time did not express 2DL2 group E 11.20% (3.50%-36.08%) ] (/9--0.019). KIR3DL1 expression level in recognition group (HLA-BW4 positive group) E 17.61% ( 1.40%-49.24% ) ] was higher than KIR3DL1 unrecognized group (HLA-BW4 negative group) 110.60% (3.50%-18.56% ) (P=-0.006). Conclusion The expression levels of KIR3DL1 in different KIR genotypes, haplotypes and HLA ligands were statistically significance.
出处
《中华血液学杂志》
CAS
CSCD
北大核心
2015年第12期994-998,共5页
Chinese Journal of Hematology
基金
国家自然科学基金(81072435、81273266)
江苏省医学创新团队与领军项目(LJ201138)
江苏省临床医学科技专项(BL2014038、SBL201320030)
血液学协同创新中心和优势学科