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作 者:李金花[1] 庞楠楠[1] 张正昊[1] 张瑞[1] 陈刚[1] 曲建华[1] Li Jinhua Pang Nannan Zhang Zhenghao Zhang Rui Chen Gang Qu Jianhua. Xinjiang(Medical University First Affiliated Hospital Blood Disease Center, Xinjiang Uygur Autonomous Region of Hematology, Urumqi 830054, Chin)
机构地区:[1]新疆医科大学第一附属医院血液病中心、新疆维吾尔自治区血液病研究所,乌鲁小齐830054
出 处:《中华血液学杂志》2017年第3期198-203,共6页Chinese Journal of Hematology
基 金:新疆维吾尔自治区自然科学基金(2013211A100)
摘 要:目的观察程序性死亡受体1/及其配体(PD-1/PD-L1)共刺激分子在慢性淋巴细胞白血病(CLL)患者中的表达水平,并探讨其可能的临床意义。方法以57例CLL患者为研究对象,以20名健康体检者为对照,采用流式细胞术分别检测其外周血CD8+、CD4+T细胞和CD19+B细胞中PD-1的表达水平,以及树突细胞(DC)中PD—L1的表达水平;同时分析PD-1/PD—L1表达与疾病分期、CD38表达、ZAP-70表达、染色体核型异常、β2微球蛋白(β2-MG)表达水平的相关性。结果①CLL患者组中男39例,女18例,平均年龄(63.7±10.7)岁。与对照组比较,年龄、性别差异无统计学意义(P值均〉0.05);CLL患者组外周血中PD-1、PD—L1的表达均高于对照组(P值均〈0.05)。②在Rai分期低、中、高危组中,随着危险度的增高PD-1、PD—L1的表达水平亦增高(P值均〈0.05)。③PD-1表达在CD8+CD38+组(11例)高于CD8+CD38-组(46例)(P=0.004),在CD8+预后不良染色体组(14例)高于CD8+预后良好染色体组(28例)(P=0.004)。④PD—L1表达在CD38+组(11例)高于CD38组(46例)(P=0.002),在ZAP-70+组(11例)高于ZAP-70组(28例)(P〈0.001),在预后不良染色体组(14例)高于预后良好染色体组(28例)(P=0.023)。PD-1、PD—L1表达与β2-MG表达无相关性(P值均〉0.05)。结论PD-1、PD—L1在CLL患者体内存在高表达,其表达水平与疾病分期、CD38表达、ZAP-70表达、染色体核型等预后指标存在一定的相关性,与β2-MG表达无相关性,提示其有可能作为评估CLL患者预后的指标。Objective To observe the expression levels of PD-I/PD-L1 costimulatory molecules and explore the clinical significance in patients with chronic lymphocytic leukemia (CLL). Methods The expression of PD-1/PD-L1 in peripheral blood CD8+T cells, CD4+T cells, CD19+B, and dendrites cells (DC) was detected by flow cytometry in 57 CLL patients and 20 healthy controls. The correlations of PD-1/ PD-L1 expression with disease stage, CD38 expression, ZAP-70 expression, chromosome karyotype abnormality and 132-MG expression were analyzed. Results (1) Compared with control, CLL patients, including 39 males and 18 females with the median age of (63.7±0.7) years, had no statistically significant difference in age and gender (P〉0.05). CLL patients had the higher PD-1/PD-L1 expression than healthy controls (P〈0.05). Gin Rai staging, the later the stage, the higher expression of PD-I/PD-L1 (P〈0.05). (3)PD- 1 expression in CD8+CD38+ group ( 11 cases) was higher than that in CD8+CD38- group (46 cases) (P=0.004), and CD8+poor prognosis chromosome group ( 14 cases) also had significant higher PD-1 expression than CD8+good prognosis chromosome group (28 cases) (P=0.004). (4)The expression of PD-L1 was higher in CD38+group, ZAP-70+group, and poor prognosis group, as compared to that in CD38- group (P=0.002), in ZAP-70 group (P〈0.001), in good prognosis group (P=-0.023). There was no correlation between the expression of PD-1/PD-L1 and 132-MG (P〉0.05). Conclusion This data reveals that PD- 1/PD-L1 was highly expressed in CLL patients. Its expression levels were correlated with Rai stage, CD38, ZAP-70, chromosome karyotype, but not with β2-MG. PD-1/PD-L1 may be a prognostic factor in patients with CLL.
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