目的探讨健康供者特征对rhG—CSF预激的骨髓(G—BM)采集物造血和免疫细胞成分的影响。方法150名健康供者体内应用rhG—CSF 5μg·kg^-1·d^-1连续4~5d,第4,5天采集骨髓和外周血,用流式细胞术测定G—BM采集物中的CD3^+、CD3^+CD4^+、CD3^+CD8^+、CD14^+、CD34^+细胞以及CD3^+CD4^-CD8^-调节性T细胞的数量,并分析供者性别、年龄、体重、是否妊娠等特征对G-BM成分的影响。结果150名健康供者G—BM所含有核细胞,淋巴细胞,CD3^+、CD3^+CD4^+、CD3^+CD8^+、CD14^+、CD34^+细胞以及CD3^+CD4^-CD8^-调节性T细胞的中位值分别为31050(12200~58100)、2122(506-6618)、1344(307—4791)、692(145~3038)、616(112—2575)、986(265—2958)、63(11—505)和83(9—390)/μl。年龄≤38岁的供者G-BM中的有核细胞、CD34^+细胞以及CD3^+CD4^-CD8^-调节性T细胞的数量分别为33800(18600~57100)、76(22~505)和97(11~380)/μl,显著高于年龄〉38岁的供者[分别为28000(12200~58100)、49(11—220)和65(9—389)/μl],P值分别为〈0.05,〈0.001和0.001。外周血单核细胞计数〉0.37×10^9/L的供者G—BM中有核细胞的数量[33550(12200—57100)/μl]显著高于≤0.37×10^9/L的供者[27150(13800~58100)/μl](P=0.005)。多因素分析显示年龄和外周血单核细胞是G—BM中有核细胞采集量的影响因素[HR值分别为0.41和2.87;P值分别为0.01和0.003];年龄是G—BM中CD34^+细胞采集量的唯一影响因素(HR=0.26;P值=0.001);年龄还是G—BM中CD3^+CD4^-CD8^-调节性T细胞数量的影响因素[HR值为0.31;P=0.001]。结论年龄是影响G—BM中有核细胞、CD34^+细胞和CD3^+CD4^-CD8^-调节性T细胞采集数量的因素,年龄≤38岁的供者更易采集满足临床需要的有核细胞和CD34^+细胞;外周血单核细胞〉0.37×10^9/L的供者采?
Objective To investigate the cell composition in granulocyte colony-stimulating factor (rhG-CSF) primed bone marrow grafts (G-BM) from donors with different characteristics. Methods One hundred and fifty healthy donors were injected subcutaneously rhG-CSF (5 μg · kg^-1 · d^- 1 ) in five consecutive days. Bone marrow and peripheral blood stem cells were harvested at day 4 and day 5. The number of CD3^+ , CD3^+ CD4^+ , CD3^+ CD8^+ , CD14^+ , CD34^+ and CD3^+ CD4^ - CD8^ - cells were determined by multicolor flow cytometry. Cell composition of G-BM from donors with different characteristics, including sex, age, weight, pregnancy were analysed. Results The absolute number of nuclear cells ( NCs), lymphocytes, CD3^+, CD3^+CD4^+, CD3^+CD8^+, CD14^+, CD34^+ and CD3^+CD4^-CD8^- cells in G-BM were 31 050 ( 12 200 - 58 100), 2122 (506 - 6618 ), 1344 ( 307 - 4791 ), 692 ( 145 - 3038 ), 616 ( 112 - 2575 ), 986 (265 - 2958), 63 ( 11 - 505) and 83 (9 - 390) per microliter, respectively. The number of NCs [ 33 800 (18600-57100)], CD34^+ cells [76(22-505)], and CD3^+CD4^-CD8^- regulatoryT cells [97(11- 380) ] harvested from younger donors (aged ≤38 years) were significantly higher than those from older ones (aged 〉38) [28000(12200-58100),49(11-220), and 65(9 -389) permicroliter (P=0.027, 〈 0.001 and =0. 001, respectively) ]. Compared with that in donors with peripheral blood monocytes (PBMs)≤0.37 × 10^9/L, higher number of NCs in G-BM [27 150( 13 800 -58 100) vs 33 550( 12 200 -57 100), P =0.0051 were collected in donors with PBMs 〉 0.37 × 10^9/L. Multivariate analysis showed that donors age ( ≤38 vs 〉 38 years; P =0.01 ) and monoeyte number in peripheral blood ( ≤0.37 × 10^9/L vs 〉 0.37 × 10^9/L; P =0. 003) were factors predicting for NC yields, and donors age ( ≤38 vs 〉 38 years; P 〈 0.001 ) was factor predicting for yields of CD34^+ cells (P 〈0. 0