机构地区:[1]解放军307医院输血科,北京100071 [2]解放军307医院血液科,北京100071
出 处:《中国输血杂志》2010年第11期917-921,共5页Chinese Journal of Blood Transfusion
基 金:国家自然科学基金(30772457)
摘 要:目的探讨供血者KIR与受血者HLA-Ⅰ类分子不同程度匹配情况下的异源反应性NK细胞对输血相关免疫抑制的作用。方法模拟临床输血状态,采用miniMACS免疫磁珠分选方法,从外周血单个核细胞(PBMC)中得到纯化的NK细胞,体外培养并采用PCR-SSP法进行5种KIR抑制基因的分型。将已经KIR分型的NK细胞(4ml共1×106个细胞)与已知HLA分型的血液病患者骨髓移植供者的全血(20 ml)按比例(相当于60 kg体重个体输入800 ml全血)混合,不同时间点取样检测免疫指标的变化。根据KIR和HLA的不相合程度分为20组,比较不同相合程度对血液免疫功能的影响。结果从0—24 h,IL-2、IL-4、PGE2、TNF-α、TNF-β、IFN-γ、GM-CSF的浓度分别由(1.97±0.12)、(0.22±0.03)、(0.22±0.06)、(0.19±0.02)、(0.13±0.02)、(0.12±0.02)、(0.19±0.02)μg/L增加到(2.94±0.06)、(0.55±0.09)、(0.53±0.05)、(3.54±0.07)、(3.08±0.14)、(2.65±0.11)、(2.37±0.16)μg/L(P<0.05),IgA、IgM、IgG的浓度都随时间的增加而分别由(1.20±0.20)、(1.28±0.07)、(9.89±0.37)g/L减少到(0.60±0.07)、(0.72±0.06)、(6.66±0.91)g/L(P<0.05);KIR与HLA相合程度的不同与IL-2、IL-4、PGE2、IgA、IgM、IgG浓度无关(P>0.05);随KIR与HLA不相合程度的加大,TNF-α、TNF-β、IFN-γ、GM-CSF的浓度逐渐增加,分别从(0.42±0.04)、(0.37±0.04)、(0.46±0.08)、(0.43±0.02)μg/L增加到(3.54±0.07)、(3.08±0.14)、(2.65±0.11)和(2.37±0.16)μg/L(P<0.05)。结论 KIR与HLA不相合程度越高越能激发异源反应性NK细胞的免疫功能,可更好地逆转输血相关免疫抑制作用。Objective To investigate the role of alloreactive natural killer cell on the immunological suppression of blood transfusion when blood donors KIR and receptor's HLA-Ⅰ molecular in varying degree matching situations.Methods NK cells from PBMC were isolated by using miniMACS and NK Cell Isolation KitⅡ in the simulated clinical external blood transfusion,then cultured in vitro.Five kinds of inhibitory KIRs were genotyped by PCR-SSP method.NK cells(4 ml a total of 1×106 cells) known KIR types were mixed with the blood(20 ml) known HLA-I type in certain proportion(equal to inputs the 800ml whole blood to person who is 60 kilogram body weight),samples were taken on different times point and the immunologic changes were detected.A total of 20 groups were analyzed on the degree of mismatching of KIR and HLA.The degree of mismatching on the immune function of blood was compared.Results Based on the analysis of the immunologic indexes of different level of KIR and HLA,mixed and incubated from 0h to 24h,we found that the concentration of IL-2、 IL-4、 PGE2 、TNF-α、TNF-β、IFN-γ and GM-CSF were increased form(1.97±0.12)、(0.22±0.03)、(0.22±0.06)、(0.19±0.02)、(0.13±0.02)、(0.12±0.02)、(0.19±0.02)μg/L to(2.94±0.06)、(0.55±0.09)、(0.53±0.05)、(3.54±0.07)、(3.08±0.14)、(2.65±0.11)、(2.37±0.16)μg/L(P〈0.05);the concentration of IgA、IgM and IgG were decreased from(1.20±0.20)、(1.28±0.07)、(9.89±0.37)g/L to(0.60±0.07)、(0.72±0.06)、(6.66±0.91)g/L(P〈0.05) at different levels.There is no correlation between KIR-HLA matching level with the concentration changing of IL-2、IL-4、PGE2、IgA、IgM、IgG(P 〉0.05).However,the concentration of TNF-α、TNF-β、IFN-γ and GM-CSF were increased from(0.42±0.04)、(0.37±0.04)、(0.46±0.08)、(0.43±0.02)μg/L to(3.54±0.07)、(3.08±0.14)、(2.65±0.11)、(2.37±0.16)μg/L(P〈0.05) with t
关 键 词:输血相关性免疫调节 自然杀伤细胞 异源性反应 杀伤细胞免疫球蛋白样受体 人类白细胞抗原
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