【摘要】 目的探讨粒细胞集落刺激因子(G-CSF)刺激下急性白血病(AL)细胞增殖与其粒细胞集落刺激因子受体(G-CS-FR)表达的关系。方法选初诊和难治复发的急性髓性白血病(AML)患者30例,急性淋巴细胞白血病(ALL)患者20例,正常对照组20例。化疗前留取骨髓5 m l,制备骨髓单个核细胞(MNC)悬液,并分别加入不同浓度的G-CSF(5,10,15,20,25 ng/m l),培养24h后用流式细胞技术检测其DNA倍体的量。同时选用G-CSFR、CD34的单抗,采用流式细胞技术检测G-CSFR、CD34在AL和正常粒细胞的表达情况。结果骨髓MNC培养24 h后各浓度的DNA倍体量在AML随着G-CSF浓度的增加有上升趋势,在ALL和正常对照无明显变化。G-CSFR、CD34的表达率:AML:(68.59±13.99)%,(45.15±4.22)%;ALL:(1.90±0.93)%,(46.75±3.15)%;正常对照:(70.5±10.8)%,(3.15±0.22)%。AML的G-CSFR表达率与ALL比较差异有统计学意义(P<0.05),与正常对照组差异无统计学意义(P>0.05);ALL的G-CSFR表达率与正常对照比较差异有统计学意义(P<0.05)。结论G-CSF可促进AML细胞增殖,不促进ALL细胞和正常粒细胞增殖;G-CSFR主要表达于成熟及恶性粒细胞,不表达于淋巴细胞。此结果在临床治疗白血病的过程中具有指导意义。更多还原

【Abstract】 Objective To explore the relationship of cell proliferation of acute leukemia stimulated by granulocyte colony-stimulating factor(G-CSF) and the expression of granulocyte colony stimulating factors receptor(G-CSFR).Methods Thirty cases of initial and refractory-relapse acute myeloid leukaemia(AML) patients,20 cases of acute lymphoblastic leukemia(ALL) and 20 normal controls were involved in the study.The 5ml bone marrow was taken from each patient before chemotherapy and the marrow mononuclear cells(MNC) were cultured with 5,10,15,20 and 25 ng/ml G-CSF respectively.After 24h,the DNA diploid and the expressions of G-CSFR and CD34 were detected by flow cytometry(FCM).Results The DNA diploid of MNC from AML was increased with the elevated concentration of G-CSF after 24h,and that of the ALL and normal control did not change significantly.The expression rates of G-CSFR were(68.59±13.99)%,(1.90±0.93)% and(70.5±10.8)% in AML,ALL and the normal control respectively.The expression rates of CD34 were(45.15±4.22)%,(46.75±3.15)% and(3.15±0.22)% in AML,ALL and normal control respectively.The expression of G-CSFR in AML was significantly different from that of ALL(P<0.05) and not different from that of normal control(P>0.05).The expression of G-CSFR in ALL was significantly different from that of the normal control(P<0.05).Conclusion G-CSF can promote the proliferation of MNC in AML and can not promote the proliferation of MNC in ALL and normal control.The expression of G-CSFR is detected in the normal and the malignant granulocyte and is not detected in lymphocyte.更多还原