应用重组人粒细胞集落刺激因子对不同人群骨髓CD34+细胞和T细胞亚群影响的动态观察

目的　探讨健康人及处于完全缓解的恶性肿瘤患者 ,在应用重组人粒细胞集落刺激因子(G CSF)期间 ,其骨髓CD34 细胞和T细胞亚群的动态变化特点。方法　 12例异基因外周血干细胞移植健康供者和 16例自体外周血干细胞移植患者 ,在接受G CSF(30 0 μg/d ,共 5d)动员外周血干细胞期间 ,应用流式细胞仪测定其骨髓CD34 细胞和T细胞亚群。结果　①恶性肿瘤患者未应用G CSF时 ,骨髓细胞中CD34 细胞的初始值为 (0 .5 2± 0 .31) % ,同等条件下正常供者骨髓细胞中CD34 细胞的测定值为 (1.2 0±0 .6 8) % ,两者有显著差异 (P <0 .0 1)。应用G CSF 4 8h后 ,两者的测定值分别为 (1.2 2± 0 .4 2 ) %和(2 .0 7± 0 .5 2 ) % ,CD34 细胞均较前有明显增加 (P <0 .0 1) ,且两者之间仍存在明显差异 (P <0 .0 1)。CD34 细胞的高峰值出现在应用G CSF 96h后 ,分别为 (2 .2 3± 0 .34) %和 (2 .4 4± 0 .5 4 ) % ,分别较未应用G CSF时差异显著 (P <0 .0 1) ,两者之间无差异 (P >0 .0 5 )。②无论是否应用G CSF ,恶性血液病患者的T淋巴细胞亚群比例均处于倒置状态 ,而正常供者的T淋巴细胞亚群则比例正常。随两者应用G CSF后CD34 细胞的逐渐增加 ,T淋巴细胞亚群变化不明显。结论　完全缓解的恶性血液病患者 ,在应用G CSF4 8     

rhG-CSF动员的骨髓和外周血干细胞混合移植物首次采集时供者外周血单核细胞计数反映混合采集物中CD34^＋细胞含量

本研究探讨人重组粒细胞集落刺激因子（rhG-CSF）动员的骨髓和外周血干细胞混合移植健康供者首次干细胞采集时供者外周血单核细胞数量与骨影外周血混合采集物中CD34^＋细胞数量的关系。对70名亲缘健康供者均皮下注射rhG-CSF5μg／（kg·d）,连续5天。第4天和第5天分别采集骨髓和外周血干细胞。首次干细胞采集时用EX2100血细胞分析仪检测供者外周血细胞计数,同时应用流式细胞仪测定骨髓和外周血混合采集物中的CD34^＋细胞数量。结果表明：rhG—CSF动员的70例供者首次干细胞采集时外周血单核细胞的数量为（1．15±0．60）×10^9／L;骨髓和外周血采集物中的CD34^＋细胞总量分别是（5．854±2．93）×10^7和（1．33±0．77）×10^8;骨髓和外周血混合采集物的CD34^＋细胞总量是（1．92±0．86）×10^8。Pearson和Spearman分析显示首次干细胞采集时供者外周血单核细胞计数（×10^9／L）与骨髓采集物中CD34^＋细胞的总量（相关系数：r=0．265,P=0．027）、外周血采集物中CD34^＋细胞总量（r=0．340,P=0．004）以及混合移植物中CD34^＋细胞的总量（r=0．398,P：0．001）均存在显著的相关性;多因素分析表明,首次干细胞采集时供者外周血单核细胞计数与骨髓采集物、外周血采集物以及混合移植物中CD34^＋细胞的总量均呈正相关关系（P值分别为0．027、0．004和0．001）。首次干细胞采集时供者外周血单核细胞数量对混合移植物中CD34^＋细胞总量预测的敏感性是71％,特异性是70％（P=0．007）。结论：rhG-CSF动员的骨髓和外周血混合移植健康供者首次干细胞采集时外周血单核细胞计数可有效预测输注给受者的CD34^＋细胞总量即采集效果。     

rhG-CSF对供者骨髓和外周血采集物中Th17细胞的影响

本研究探讨人重组粒细胞集落刺激因子（rhG-CSF）供者体内应用对骨髓采集物（GBM）和外周血采集物（GPB）中Th17细胞的影响。对25名亲缘供者皮下注射rhG-CSF5μg/（kg.d）,连用5天,于第4、5天分别采集骨髓和外周血,注射前留取部分供者稳态骨髓（steady state bone mavrow,SSBM）和稳态外周血（steady state peripheral blood,SSPB）。采用流式细胞术测定动员前后供者骨髓和外周血中T细胞分泌IL-17的变化。结果显示：rhG-CSF体内应用后供者骨髓中CD4＋T细胞和CD8＋T细胞分泌Il-17的能力较稳态骨髓明显下降（GBM vs SSBM Th17/CD4＋T,0.74%±0.27%vs1.78%±1.19%,p〈0.05;Tc17/CD8＋T,0.19%±0.16% vs 0.36%±0.37%,p〈0.05）,外周血中的变化与骨髓相同（GPBvsSSPBTh17/CD4＋ T,1.82%±0.91%vs3.26%±1.89%,p〈0.01;Tc17/CD8＋T,0.21%±0.17%vs0.44%±0.28%,p〈0.01）。25例供者GBM与GPB相比,GPB中Th17/CD4＋ T和Tc17/CD8＋ T的比值均高于GBM（p〈0.05,p〈0.01）。结论：体内应用rhG-CSF能够抑制供者骨髓及外周血采集物中Th17细胞的产生,它可能是GPB和/或GBM混合移植对GVHD的发生率没有增加的部分原因。     

粒系集落刺激因子对外周血T淋巴细胞亚群的影响及与CD34+细胞动员效果的相关性

本研究观察粒系集落刺激因子(G—CSF)作为造血干细胞动员剂对外周血T淋巴细胞亚群的影响及与CD34^ 细胞动员效果的关系。对26例行自体造血干细胞移植患在G—CSF动员前后收集外周血标本，用流式细胞术检测动员前后CD3^ 、CD3^ CD4^ 、CD3^ CD8^ 、CD3^ CD4^ CD8^ 及CD3^ CD4^-CD8细胞绝对数量的变化并与外周血CD34^ 细胞的动员效果进行相关性分析。结果表明：GCSF动员后外周血CD3^ 、CD3^ CD4^ 、CD3^ CD4^ CD8^ 及CD3^ CD4^-CD8细胞的绝对数量分别增加2.23，2．62，2.99及10．96倍，而CD3^ CD4^ CD8^ 细胞的变化无统计学意义(P=0．243)。各亚群细胞的变化与CD34^ 细胞动员效果比较，仅CD3^ CD4 CD8细胞的变化与CD34^ 细胞动员效果间具有良好的相关性，r=0．796，P=0.000。结论：G—CSF将造血干细胞由骨髓动员到外周血的同时，使外周血中T细胞亚群的绝对数量发生不同程度的变化。在各T淋巴细胞亚群中CD3^ CD8^-细胞的增加与CD34^ 细胞的动员效果间具有统计学意义的相关性。     

rhG-CSF对健康供者的影响

目的 :探讨人重组粒细胞集落刺激因子 (rhG CSF)对健康供者的影响。方法 :1998年 1月至 2 0 0 3年6月年间 2 2例接受rhG CSF 10 μg·kg-1·d-1动员的健康供者 ,观察动员及分离过程的不良反应 ,检测动员前后血常规、CD3、CD4、CD8细胞比例 ;采集物进行单个核 (MNC)、CD3 4+细胞计数 ;所有供者随访至 2 0 0 3年 10月 3 0日。结果 :2 2例供者在rhG CSF动员过程中出现 1～ 2级 (按WHO急性毒副作用分级标准 )肌肉或骨痛 ( 4 5 5 % )、头痛( 2 2 7% )、食欲减退 ( 5 0 % )等副作用 ,无需终止动员。动员后白细胞较动员前显著升高 ,停止动员后 7d基本恢复至动员前水平。血红蛋白及血小板、CD3 +、CD4+、CD 8+和CD 4/CD8比值于动员前、动员第 4天及停止动员后 7d的变化无统计学意义。结论 :绝大多数健康供者可耐受rhG CSF剂量为 10 μg·kg-1·d-1的短程动员和PBSC采集过程 ;rhG CSF对健康供者的T淋巴细胞亚群分布无影响。     

rhG-CSF动员的外周血采集物与稳态骨髓中CD4^＋CD8^＋初始及记忆T细胞亚群的比较

本研究探讨重组人粒细胞集落刺激因子（rhG—CSF）动员的外周血采集物（G—PB）与稳态骨髓（SS—BM）中CD4^＋、CD8^＋初始、记忆T细胞亚群的差异。依据细胞表面CIM5RA和CD62L的表达将CD4^＋、CD8^＋T细胞划分为初始T细胞（naive，CIM5RA^＋CD62L^＋）、中心记忆T细胞（centralmemory，TCM，CIM5RA—CD62L^＋）、效应记忆T细胞（effeetor memory，TEM，CIM5RA^-CD62L^-）、终末分化效应记忆T细胞（terminally difierentiated effeetor memory，TTTp，CIM5RA^＋CD62L^-）。用流式细胞仪测定G—PB与SS—BM中CD4^＋、CD8^＋初始和记忆T细胞的比例组成，并计算每微升采集物中各细胞亚群的绝对数量。结果表明：G—PB中CD4^＋、CD8^＋T细胞的比例组成及CD4^＋／CD8^＋比值均高于SS—BM（P〈0．05）；G—PB中CD4^＋初始T细胞的比例显著低于SS—BM（P〈0．001），而CD4^＋TEM比例显著高于SS—BM（P〈0．001）；G—PB中CD8^＋初始和记忆T细胞亚群的比例与SS—BM无显著差异（P〉0．05）；与SS—BM相比，G—PB中CD4^＋CD62L^＋T细胞的比例明显降低（P=0．001），每微升G—PB移植物中的各淋巴细胞亚群均明显高于SS—BM（P〈0.001）。结论：G—PB与SS—BM中CD4^＋、CD8^＋初始和记忆T细胞亚群在相对和绝对数量方面存在明显的差异，这种差异可能影响G—PB和SS—BM移植后急性、慢性移植物抗宿主病发生率及其程度的异同。     

rhG-CSF动员对供者外周血CD4+T细胞极化和迁移的影响

T淋巴细胞极化和迁移的过程需要依赖细胞表面的淋巴细胞功能相关抗原-1（LFA-1）与其配体细胞间粘附分子-1（ICAM-1）的结合。本研究旨在探讨重组人粒细胞集落刺激因子（rhG-CSF）动员对异基因造血干细胞移植（allo-HSCT）供者外周血CD4＋T细胞的极化和迁移的影响。采集10例allo-HSCT供者于rhG-CSF动员后第5天和10例健康志愿者的外周血,使用免疫磁珠分选法纯化CD4＋T细胞,使用激光扫描共聚焦显微镜检测CD4＋T细胞接受基质细胞衍生因子1理（SDF-1d）和ICAM-1信号刺激后细胞的极化和迁移能力。结果显示,rhG-CSF动员后供者CD4＋T细胞的极化比例为（32．424-4．91）％,健康人志愿者为（56．55±5．35）％,差异有统计学意义（P〈0．01）;rhG-CSF动员后供者CD4＋T细胞的迁移速率为（7．06±1．44μm／min）,健康志愿者CD4＋T细胞的迁移速率为（9．05±1．91μm／min）,差异有统计学意义（P〈0．01）。结论：rhG-CSF动员能明显抑制供者CD4＋T细胞的极化和迁移能力。     

中剂量rhG-CSF对正常供者外周血CD34+细胞动员效果

本研究探讨中等剂量600μg/d粒细胞集落刺激因子(GCSF)对正常供者CD34 细胞的动员效果及动员前后外周血单个核细胞中T细胞亚群的变化。对2002-2004年我科31例健康供者给予rhGCSF600μg/d,在动员的第4天开始采集外周血干细胞(PBSC),并检测动员前后白细胞总数、动员后的有核细胞(NC)数、单个核细胞(MNC)数、CD34 细胞数及粒巨噬细胞集落形成单位(CFUGM),同时观察动员及采集过程中的不良反应。对12例供者GCSF动员前后外周血单个核细胞中T细胞亚群的变化进行了观察。结果显示:600μg/d组与既往使用的300μg/d组相比,rhGCSF动员后的外周血细胞中NC、MNC和CD34 细胞及CFUGM显著增加(P<0.05),受者造血重建时间缩短(P<0.05),动员和采集过程中的不良反应发生率无明显上升(P>0.05),无严重不良反应发生。动员后CD3 细胞在PBMNC中的比例较动员前下降(15.05±3.3)%,(P<0.05)。动员前后CD4 /CD8 淋巴细胞的比值无明显变化(P>0.05)。结论:600μg/d的GCSF对正常供者的动员效果好,受者造血重建快,无严重不良反应发生。动员后PBMNC中CD3 细胞的下降及CD4 /CD8 淋巴细胞比值无明显变化,从而使得移植后急性GVHD的发生率无明显上升。     

rhG-CSF对骨髓采集物中记忆T细胞上黏附分子表达的调节作用

本研究主要探讨人重组粒细胞集落刺激因子（rhG—CSF）对骨髓采集物记忆T细胞上黏附分子表达的调节作用。采用流式细胞仪检测稳态骨髓（SS—BM）和rhG—CSF预激的骨髓（G—BM）中CD4^＋、CD8^＋T细胞百分比及其记忆细胞表面黏附分子CD49d、CD54、CD62L和CD11a的表达。结果显示：rhG—CSF应用后骨髓采集物中CD4^＋、CD8^＋T细胞在淋巴细胞中的比例明显降低（P〈0．001）,记忆T细胞的比例没有明显变化;CD49d在CD4^＋和CD8^＋T细胞的表达百分比显著下降（p〈0．05）,但在记忆T细胞的表达百分比没有明显的变化;CD54在CD4^＋及其记忆T淋巴细胞和CD8^＋T淋巴细胞的表达百分比明显降低（P〈0．05）,而在CD8^＋记忆T细胞的表达百分比没有明显变化;CD62L在CD4^＋、CD8^＋及其记忆T细胞的表达百分比显著下降（P〈0．01）;CD11a在CD4^＋及其记忆T细胞的表达百分比明显降低（p〈0．05）,而在CD8^＋及其记忆T细胞的表达百分比没有明显变化。结论：rhG—CSF部分下调骨髓中CD4^＋、CD8^＋以及相应的记忆T细胞上黏附分子表达。     

应用TGF-β_1从rhG-CSF动员的外周血采集物中诱导产生CD4~+ CD25~+调节性T细胞

目的探讨在人重组的粒细胞集落刺激因子(rhG-CSF)动员的外周血单个核细胞中诱导产生CD4+CD25+调节性T细胞可行性及其表型和功能。方法收集本院外周血干细胞移植术供者rhG-CSF动员前外周血(PB组)和动员后的外周血采集物(G-PB组)各10例,用免疫磁珠法分选出CD4+CD25?T细胞,并用转化生长因子β1(TGF-β1)进行诱导,分别应用流式细胞术、RT-PCR和细胞增殖、抑制试验测定诱导后细胞的CD25、Foxp3表达和免疫抑制功能,比较2组之间CD4+CD25+T细胞转化率、抑制功能的差异。结果1)G-PB和PB来源的CD4+CD25?T细胞在抗-CD3 M cAb和TGF-β1作用下CD25+分子表达不同,分别为:(77.9±2.3)%和(65.7±4.2)%,差异有统计学意义(P<0.05);2)TGF-β1诱导产生的CD4+CD25+T细胞高表达Foxp3;3)PB、G-PB来源的TGF-β1诱导产生的CD4+CD25+T细胞具有免疫抑制功能,cpm值分别为:11 739±352和18 732±437(P<0.05)。结论G-CSF动员的外周血可作为CD4+CD25+调节性T细胞的重要来源。     

rhG-CSF动员的健康供者外周血采集物和骨髓采集物中NK细胞亚群的对比研究

目的 研究人重组粒细胞集落刺激因子(rhG-CSF)动员的健康供者外周血采集物(G-PB)和骨髓采集物(G-BM)中NK细胞亚群的异同.方法 2009年7月至9月在北京大学血液病研究所接受异基因造血干细胞移植(allo-HSCT)的28名亲缘供者,采用流式细胞术测定两种移植物中淋巴细胞、NK细胞及NK细胞中IFN-γ(NK1)、IL-13(NK2)、TGF-β和IL-10(NKr)四种细胞因子的分泌情况.结果 G-PB中淋巴细胞占有核细胞百分比显著高于G-BM(P＜0.01).G-BM中NK细胞、NK1、NK2、NKr占淋巴细胞百分比明显高于G-PB(P＜0.05),NK2、NKr占NK细胞的比例亦明显高于G-PB(P＜0.01),但NK1占NK细胞的比例在二者之间差异并无明显统计学意义.G-BM中IL-13与IFN-γ比值、TGF-β与IFN-γ比值、IL-10与IFN-γ比值亦明显高于G-PB(P值分别为0.010、0.002、0.000).结论 尽管G-BM与G-PB中NK1的比例相近,但G-BM中NK2及NKr的比例上调进一步解释了G-BM较G-PB具有更低的免疫反应性.

Abstract：

Objective To analyze the difference in NK cell subsets between recombination human granulocyte colony -stimulating factor (rhG-CSF) mobilized peripheral blood grafts (G-PB) and bone marrow grafts(G-BM) from healthy donors. Methods From July 2009 to September 2009, G-PB and G-BM from 28 related donors were collected to analyze lymphocytes, NK cells and NK cell secretion of interferon-γ(IFN-γ,NK1 ), interleukin-13 (IL-13, NK2 ), transforming growth factor-β (TGF-β) and interleukin-10 ( IL-l0,NKr) by flow cytometry. Results The percentage of lymphocytes in G-PB was significantly higher than that in G-BM(P＜0.01). The proportions of NK cells and NK1, NK2, NKr subsets among lymphocytes were significantly higher in G-BM than in G-PB(P＜0.05 ), and so were the percentage of NK2, NKr cells among NK cells (P＜0.01 ), but no significant difference in the percentage of NK1 cells among NK cells between G-PB and G-BM. The ratios of IL-13 and IFN-γ, of TGF-β and IFN-γ, or of IL-l0 and IFN-γ in G-BM were significantly higher than those in GPB ( P = 0. 010, 0. 002, or 0. 000, respectively). Conclusion The increased proportion of NK2 and NKr in G-BM might be helpful to explain the lower immunoreactivity of G-BM than that of G-PB, although the proportion of NK1 in G-BM and G-PB is similar.     

Immunophenotypic analyses of CD34(+) cell subsets in bone marrow from HIV-infected patients during highly- active antiretroviral therapy

BACKGROUND: Because increased bone marrow lymphopoiesis might contribute to immunologic reconstitution during highly-active antiretroviral therapy (HAART), we examined the effect of HAART on CD34(+) cell subsets in bone marrow from HIV-infected patients. MATERIALS AND METHODS: In 12 HIV-infected patients, bone marrow and peripheral blood were collected before then 4 and 26 weeks after initiating HAART. Bone marrow in 28 HIV-seronegative controls was also examined. Immunophenotypic analyses of CD34(+) cell subsets in bone marrow were performed by flow cytometry. RESULTS: Our main findings in bone marrow were: (i) HIV-infected patients had increased proportions of CD34(+)cells expressing T- and B-cell markers before initiating HAART; (ii) in contrast, these patients had decreased proportions of CD34(+) cells expressing myeloid-associated markers; (iii) although HAART induced an increase in peripheral T-cell counts, the percentage of CD34(+)cells expressing T-cell markers tended to decrease during such therapy; (iv) HAART induced a decrease in serum IgG accompanied by a slight decrease in the proportion of CD34(+)cells expressing B-cell markers; (v) in contrast, HAART induced a significant increase in peripheral granulocyte counts, accompanied by a slightly increased proportion of CD34(+) cells expressing myeloid-associated molecules. CONCLUSION: Our findings are compatible with an HIV-related block in T-cell differentiation, leading to accumulation of T-cell progenitors in bone marrow, and such a block may be removed by HAART.     

The kinetics of G-CSF mobilization of CD34+ cells in healthy people

When healthy people are given granulocyte colony stimulating factor (G-CSF) for 10 days the number of CD34+ cells in the peripheral blood begins to increase on the fourth day, reaches a maximum on the sixth day and then decreases. In this study, we further define the time and variability of peak mobilization of CD34+ cells. Twenty-two healthy people were given G-CSF (7.5 or 10 μg kg^?1 day^?1) subcutaneously each morning for 5 days and peripheral blood CD34+ cell counts were analysed immediately prior to the fourth (day 4) and fifth (day 5) G-CSF injection and 24 h after the fifth injection (Day 6). White blood cell (WBC) and neutrophil counts were greatest on day 6 [WBC = 43.8 ± 13.9 × 10⁹ L^?1 (mean ± 1 SD) and neutrophils = 36.6 ± 12.8 × 10⁹ L^?1]. In contrast the CD34+ cell counts on day 6 (107 ± 104 × 10⁶ L^?1) were less than on day 5 (128 ± 136 × 10⁶ L^?1) (P= 0.048) but still greater than on day 4 (60.7 ± 40.2 × 10⁶ L^?1) (P < 0.0001). The CD34+ cell counts of 10 donors were measured 2, 4 and 6 h after the fifth injection to determine if the counts increased further between days 5 and 6. The number of CD34+ cells in the blood on day 5 2 h after the fifth injection (193 ± 277 × 10⁶ L^?1) was greater than the number prior to the injection (158 ± 190 × 10⁶ L^?1), 4 h post-injection (139 ± 158 × 10⁶ L^?1) and 6 h post-injection (170 ± 236 × 10⁶ L^?1), but the differences were not significant (P= 0.29, 0.25 and 0.45). The number of CD34+ cells in the blood of 12 people were measured before and after the fourth G-CSF dose. Prior to the day 4 injection the CD34+ count was 61 ± 40 × 10⁶ L^?1. At 2, 4 and 6 h the counts were 60 ± 40, 61 ± 29 and 64 ± 30 × 10⁶ L^?1, respectively, and the differences were not significant (P= 0.99, P= 0.98, and P= 0.73). In conclusion, when healthy volunteers are given daily G-CSF injections, the number of mobilized CD34+ cells was the greatest on day 5, slightly less on day 6 and the least on day 4. If only one PBSC component is needed, PBSCs can be collected on day 5 after only 4 days of G-CSF. If PBSC components are collected on both days 5 and 6, the fifth dose can be given either before or after the collection of the first PBSC component.     

人骨髓基质细胞协同外源性细胞因子对脐血CD34+细胞的体外扩增作用

目的　探讨人骨髓基质细胞 (hBMSC)协同以干细胞因子和FL为主的细胞因子对脐血CD3 4 + 细胞的体外扩增作用。方法　采用免疫磁珠法分选脐血CD3 4 + 细胞 ,以SCF +IL 3+IL 6 +FL +EPO组合高效扩增CD3 4 +细胞[1] ,并结合该细胞因子组合接种到预先照射 (2 0Gy)的hBMSC上 ,d10结束培养 ,收获细胞分别作细胞计数、集落培养和流式细胞术检测CD3 4 + 细胞数。结果　本法获得的脐血CD3 4 + 细胞纯度较高 (92± 0 .0 4 ) % ,在hBMSC组培养的d2 ,造血细胞几乎都粘附到hBMSC上 ,随着培养时间的延长 ,CD3 4 + 细胞比例不断下降。hBMSC组与无hBMSC组相比 ,除细胞总数扩增倍数外 ,CFU GM、BFU E、CD3 4 + 细胞扩增倍数差异有显著性意义 (P <0 .0 5 )。结论　①脐血来源的CD3 4 + 细胞粘附于滋养层上形成造血灶 ,且 10d后造血细胞仍具有体外集落形成能力 ,表明骨髓基质细胞可支持并维系体外造血 ;②hBMSC协同外源性细胞因子可能是扩增造血干 /祖细胞的较理想方案     

2例异体手移植术后受者T细胞亚群与CD3~+HLA-DR~+细胞水平的动态观察

目的　研究异体复合组织移植 手移植术后病人外周血T淋巴细胞亚群及CD3+ HLA DR +T细水平的动态变化。方法　用流式细胞术测定了 2例异体手移植术后不同时间外周血CD3+ 、CD3+ CD4+ 、CD3+ CD8+ 、CD3+ HLA DR+ (活化T细胞 )细胞百分率 ,及CD4/CD8比值 ,以病人术前一周结果作对照。结果　使用免疫抑制剂后 ,于术后第 1日CD3+ 、CD3+ CD4+ 、CD3+CD8+ 、CD3+ HLA DR+ 细胞水平 ,CD4/CD8比值都开始降低 ,以 3～ 5日为最低水平。术后 8日 ,上述指标逐渐回升 ,至 15日后基本趋于平稳 ,但CD3+ 、CD3+ CD4+ 细胞及CD4/CD8比值仍明显低于术前 ,而CD3+ CD8+ 、CD3+ HLA DR+ 细胞水平则高于术前。结论　异体复合组织 手移植术后病人外周血T淋巴细胞亚群及CD3+ HLA DR+ 细胞水平的变化与单一组织器官移植 (肾移植 )术后稳定期的变化一致 ,也与病人术后的稳定病情相吻合。     

Recent developments in the cell biology of granulocyte-macrophage colony-stimulating factor and granulocyte colony-stimulating factor: activities on endothelial cells

Summary Granulocyte-macrophage colony-stimulating factor and granulocyte colony-stimulating factor were considered as growth and differentiation factors restricted to hematopoietic cells. It was recently found that non-hematopoietic cells, including endothelial cells, respond to these cytokines. In this review we describe their effects on endothelial cells, underlining their role in the behavior and survival of the microenvironment of bone marrow, in the angiogenesis process related to the progression of solid tumors and of vascular tumors, and in the homing of lymphocytes.     

移植物中CD34+细胞及T细胞亚型对HLA相合同胞异基因外周血造血干细胞移植预后的影响

目的 探讨移植物中CD34+细胞及T细胞剂量对HLA相合同胞异基因外周血造血干细胞移植(allo-PBSCT)预后的影响.方法 流式细胞术检测移植物中CD34+细胞,CD3+、CD3+CD4+及CD3+CD8+T细胞含量,按患者体重计算出移植物中单个核细胞(MNC),CD34+细胞,CD3+、CD3+CD4+及CD3+CD8+T细胞数量,根据中位数分别将患者分为高剂量组和低剂量组,比较高剂量和低剂量组患者移植后造血重建、移植物抗宿主病(GVHD)、移植相关死亡(TRM)、复发、总体生存(OS)率以及无病生存(DFS)率的发生情况.结果 CD34+细胞高剂量组(34例)移植后中性粒细胞和血小板的恢复速度显著加快(P值均<0.05).CD3+CD4+、CD3+CD8+T细胞高剂量组和相应低剂量组相比,Ⅱ-Ⅳ度aGVHD发生率有增高趋势(P值分别为0.089和0.098).CD3+CD4+及CD3+CD8+T细胞高剂量组和相应低剂量组相比,TRM显著增高(P值均<0.05);多因素分析显示,CD3+CD4+和CD3+CD8+T细胞输注剂量是患者TRM的影响因素(RR分别为13.12和25.90,P值均<0.05).各高剂量组和相应低剂量组比较复发率差异无统计学意义(P值均>0.05).CD3+ CD4+及CD3+CD8+T细胞高剂量组分别和相应低剂量组相比,OS显著降低(P值均<0.05);多因素分析显示,CD3+CD4+和CD3+CD8+T细胞输注剂量是患者OS的影响因素(RR分别为3.71和3.01,P值均<0.05);CD3+CD4+T细胞高剂量组和低剂量组相比,DFS显著降低(P值均<0.05);多因素分析显示,CD3+CD4+T细胞输注剂量(RR=6.91,P=0.011)是患者DFS的影响因素.结论 高剂量CD34+细胞移植可加快移植后造血重建;移植物中高含量的CD3+CD4+及CD3+CD8+T细胞会增加患者TRM,降低OS或DFS.     

人正常骨髓 CD_(34)~ 造血细胞的形态学与细胞化学特征

目的：探讨ＣＤ３４＋造血细胞的形态学特征。方法：采用免疫磁珠－流式细胞仪分选二步法获取高纯度的人正常骨髓ＣＤ３４＋造血细胞。结果和结论：ＣＤ３４＋造血细胞从形态上可分为３型，Ⅰ型胞体略大于淋巴细胞，各种细胞化学染色阴性，最原始，拟定候选干细胞群；Ⅱ型为典型的小淋巴细胞状，细胞化学亦为阴性，拟定多向祖细胞阶段；Ⅲ型胞体极不均一，依分化方向不同其细胞化学表现为±～＋＋，拟定定向祖细胞阶段。     

阵发性睡眠性血红蛋白尿症患者骨髓中正常及异常造血干/祖细胞含量分析

OBJECTIVE: To explore the contributive role of CD34+ cell amount in pathogenesis of clonal dominance in paroxysmal nocturnal hemoglobinuria (PNH). METHODS: Bone marrow nuclear cells (BMNCs) were doubly labeled by PE-conjugated anti-CD59 monoclonal antibody (McAb) and FITC-conjugated anti-CD34 McAb, and CD34+ cells contained in different cell populations were determined by flow cytometry. RESULTS: 1. CD34+ cells mainly appeared in window A (containing mainly of lymphocytes) and window D (composed of blasts, other immature cells and monocytes) in both normal controls and PNH patients. 2. The numbers of CD34+ cells in normal controls were (3,701 +/- 896)/10(5) cells and (11,373 +/- 1,574)/10(5) cells in window A and window D, respectively. Compared with normal controls, PNH patients possessed significantly decreased number of CD34+ cells [(1,215 +/- 749)/10(5) cells and (6,420 +/- 2,337)/10(5) cells in window A and window D, respectively]. 3. In normal controls, nearly all CD34+ cells in windows A and D expressed CD59 antigen (99.2% +/- 1.0% in A and 98.7% +/- 0.8% in D), whereas in PNH patients, the CD34+ cells clearly showed two immunophenotypes of CD34+CD59+ and CD34+CD59- with the latter being predominant in both window A and window D(CD59- cells constituting 79.3% +/- 15.5% and 85.9% +/- 7.8% of CD34+ cells, respectively). 4. The amounts of CD34+ cells in CD59+ populations [(463 +/- 276)/10(5) cells in window A and (3,841 +/- 1,188)/10(5) cells in window D] reduced to a greater extent than that in CD59- population [(2,603 +/- 2,084)/10(5) cells in window A and (7,105 +/- 2,739)/10(5) cells in window D]. CONCLUSION: Hematopoietic stem/progenitor cells in BMNCs of PNH patients are markedly decreased. Reduction of CD34+ cells in CD59+ cell population is even more obvious than that in CD59- population. The dominance of the abnormal clone in hematopoiesis might be a relative one in the setting of severely impaired normal hematopoiesis.