股骨近端Stro-1+细胞与骨形态发生蛋白及其受体的相关性

背景：髋关节置换后假体的融合率与假体周围的骨重建密切相关,这个过程中骨髓间充质干细胞的募集、向成骨细胞分化的途径受骨形态发生蛋白调控。 目的：分析股骨近端Stro-1⁺细胞与骨形态发生蛋白7、骨形态发生蛋白受体的相关性。 方法：32例患者初次进行髋关节置换,取术中股骨矩开槽时骨块,体外细胞培养14 d后检测骨髓间充质干细胞数量,Stro-1⁺标记干细胞的总量,骨形态发生蛋白7、骨形态发生蛋白受体1a、骨形态发生蛋白受体2的表达。 结果与结论：Stro-1⁺、骨形态发生蛋白7、骨形态发生蛋白受体1a、骨形态发生蛋白受体2的表达在不同年龄组有轻微差异,但差异无显著性意义,在不同性别组差异也无显著性意义;股骨近端Stro-1⁺细胞数量(即代表具有向成骨细胞分化功能的细胞)与骨形态发生蛋白7表达呈负相关关系,与骨形态发生蛋白受体1a表达呈正相关关系,其可以影响髋关节假体的骨融合与生存率。     

Defining stem and progenitor cells within adipose tissue

Adipose tissue-derived stem cells (ADSC) are routinely isolated from the stromal vascular fraction (SVF) of homogenized adipose tissue. Freshly isolated ADSC display surface markers that differ from those of cultured ADSC, but both cell preparations are capable of multipotential differentiation. Recent studies have inferred that these progenitors may reside in a perivascular location where they appeared to coexpress CD34 and smooth muscle actin (alpha-SMA) but not CD31. However, these studies provided only limited histological evidence to support such assertions. In the present study, we employed immunohistochemistry and immunofluorescence to define more precisely the location of ADSC within human adipose tissue. Our results show that alpha-SMA and CD31 localized within smooth muscle and endothelial cells, respectively, in all blood vessels examined. CD34 localized to both the intima (endothelium) and adventitia neither of which expressed alpha-SMA. The niche marker Wnt5a was confined exclusively to the vascular wall within mural smooth muscle cells. Surprisingly, the widely accepted mesenchymal stem cell marker STRO-1 was expressed exclusively in the endothelium of capillaries and arterioles but not in the endothelium of arteries. The embryonic stem cell marker SSEA1 localized to a pericytic location in capillaries and in certain smooth muscle cells of arterioles. Cells expressing the embryonic stem cell markers telomerase and OCT4 were rare and observed only in capillaries. Based on these findings and evidence gathered from the existing literature, we propose that ADSC are vascular precursor (stem) cells at various stages of differentiation. In their native tissue, ADSC at early stages of differentiation can differentiate into tissue-specific cells such as adipocytes. Isolated, ADSC can be induced to differentiate into additional cell types such as osteoblasts and chondrocytes.     

Bone marrow cells stained by azide-conjugated alexa fluors in the absence of an alkyne label

Thymidine analog 5-ethynyl-2'-deoxyuridine (EdU) has recently been introduced as an alternative to 5-bromo-2-deoxyuridine (BrdU) for cell labeling and tracking. Incorporation of EdU into replicating DNA can be detected by azide-conjugated fluors (eg, Alexa-azide) through a Cu(i)-catalyzed click reaction between EdU's alkyne moiety and azide. While this cell labeling method has proven to be valuable for tracking transplanted stem cells in various tissues, we have found that some bone marrow cells could be stained by Alexa-azide in the absence of EdU label. In intact rat femoral bone marrow, ～3% of nucleated cells were false-positively stained, and in isolated bone marrow cells, ～13%. In contrast to true-positive stains, which localize in the nucleus, the false-positive stains were cytoplasmic. Furthermore, while true-positive staining requires Cu(i), false-positive staining does not. Reducing the click reaction time or reducing the Alexa-azide concentration failed to improve the distinction between true- and false-positive staining. Hematopoietic and mesenchymal stem cell markers CD34 and Stro-1 did not co-localize with the false-positively stained cells, and these cells' identity remains unknown.     

Comparison of Mesenchymal Stem Cells Obtained from Different Human Tissues

We studied mesenchymal stem cells from human bone marrow, adipose tissue, skin, placenta, and thymus. Morphological study and cytofluorometrical analysis by the main marker genes (CD10, CD13, CD31, CD44, CD90, CD105) were carried out. Mesemchymal stem cells of the studied tissues during isolation and culturing were morphologically similar and did not differ by the expression of the main marker genes.__________Translated from Kletochnye Tekhnologii v Biologii i Meditsine, No. 2, pp. 89–94, 2005     

脂肪与骨髓来源间充质干细胞生物学特性的比较

背景：近几年来脂肪来源的间充质干细胞因其取材容易也被广泛研究。 目的：比较脂肪来源和骨髓来源间充质干细胞的生物学特性。 方法：分离及体外培养人骨髓源间充质干细胞和脂肪源间充质干细胞,比较它们的表型、细胞倍增时间及分泌因子水平等。 结果与结论：脂肪来源和骨髓来源的间充质干细胞在细胞表型上类似,只有CD106的表达有差异。脂肪来源间充质干细胞增殖速率比骨髓来源的间充质干细胞快。在相同体积的脂肪组织中能够得到的干细胞前体细胞的数量是骨髓的10倍以上。提示脂肪来源和骨髓来源的间充质干细胞具有相同功能,但脂肪组织是一个更有应用前景的干细胞来源。     

Differential expression of stem cell mobilization-associated molecules on multi-lineage cells from adipose tissue and bone marrow

Our laboratory has characterized a population of stromal cells obtained from adipose tissue termed processed lipoaspirate cells (PLAs). PLAs, like bone-marrow derived mesenchymal stem cells (BM-MSCs), have the capacity to differentiate along the adipogenic, osteogenic, chondrogenic, and myogenic lineages, In order to better characterize these two multi-lineage populations, we examined the surface phenotype of both bone marrow and adipose tissue-derived cells from five patients undergoing surgery. PLA and BM-MSC cells were isolated, subcultivated, and evaluated for cell surface marker expression using flow cytometry. PLA and BM-MSC cells both expressed CD13, CD29, CD44, CD90, CD105, SH-3, and STRO-1. Differences in expression were noted for cell adhesion molecules CD49d (Integrin alpha4), CD54 (ICAM-1), CD34, and CD106 (VCAM-1). While markedly similar, the surface phenotypes of PLA and BM-MSC cells are distinct for several cell adhesion molecules implicated in hematopoietic stem cell homing, mobilization, and proliferation.     

CDCP1 identifies a broad spectrum of normal and malignant stem/progenitor cell subsets of hematopoietic and nonhematopoietic origin

CUB-domain-containing protein 1 (CDCP1) is a novel transmembrane molecule that is expressed in metastatic colon and breast tumors as well as on the surface of hematopoietic stem cells. In this study, we used multiparameter flow cytometry and antibodies against CDCP1 to analyze the expression of CDCP1 on defined hematopoietic cell subsets of different sources. In addition, CDCP1 expression on leukemic blasts and on cells with nonhematopoietic stem/progenitor cell phenotypes was determined. Here we demonstrate that a subset of bone marrow (BM), cord blood (CB), and mobilized peripheral blood (PB) CD34+ cells expressed this marker and that CDCP1 was detected on CD34(+)CD38- BM stem/progenitor cells but not on mature PB cells. Analysis of leukemic blasts from patients with acute lymphoblastic leukemia, acute myeloid leukemia, and chronic myeloid leukemia in blast crisis revealed that CDCP1 is predominantly expressed on CD34(+)CD133+ myeloid leukemic blasts. However, CDCP1 was not strictly correlated with CD34 and/or CD133 expression, suggesting that CDCP1 is a novel marker for leukemia diagnosis. Stimulation of CD34+ BM cells with CDCP1-reactive monoclonal antibody CUB1 resulted in an increased (approximately twofold) formation of erythroid colony-forming units, indicating that CDCP1 plays an important role in early hematopoiesis. Finally, we show that CDCP1 is also expressed on cells phenotypically identical to mesenchymal stem/progenitor cells (MSCs) and neural progenitor cells (NPCs). In conclusion, CDCP1 is not only a novel marker for immature hematopoietic progenitor cell subsets but also unique in its property to recognize cells with phenotypes reminiscent of MSC and NPC.     

人前脑啡肽基因修饰骨髓间充质干细胞系的生物学特性

BACKGROUND:Previous studies have found that the transplantation of modified cell lines exhibit analgesic effect. But little is reported on the biological characteristics of human preproenkephalin gene-modified bone marrow mesenchymal stem cell lines. OBJECTIVE:To observe the biological characteristics of human preproenkephalin gene-modified bone marrow mesenchymal stem cells. METHODS:Bone marrow mesenchymal stem cells were isolated and cultured to establish human preproenkephalin gene-modified bone marrow mesenchymal stem cell lines. RESULTS AND CONCLUSION:After freezing-thawing, passage 4 human bone marrow mesenchymal stem cells, human bone marrow mesenchymal stem cells-pBABE and human bone marrow mesenchymal stem cells-human preproenkephalin exhibited no significant changes in the cell viability (P > 0.05), as well as in the fat cell proportion after adipogenic induction (P > 0.05). Moreover, red calcium deposition was presented in all these cells by alizarin red staining after osteogenic induction. Flow cytometry results showed that passage 4 human bone marrow mesenchymal stem cells, human bone marrow mesenchymal stem cells-pBABE and human bone marrow mesenchymal stem cells-human preproenkephalin could express CD29 and CD44, but not express CD34 and CD45. Human preproenkephalin genes were highly expressed in human bone marrow mesenchymal stem cells-pBABE, but lowly expressed in passage 4 human bone marrow mesenchymal stem cells. Additionally, recombinant plasmid pBABE-preproenkephalin-modified human bone marrow mesenchymal stem cells could express enkephalin protein. In conclusion, human preproenkephalin gene-modified human bone marrow mesenchymal stem cell lines can maintain the pluripotent differentiation or proliferation capacity of bone marrow mesenchymal stem cells, and secrete enkephalin protein.     

骨髓间充质干细胞对骨髓CD34~+细胞增殖影响的体外研究

研究骨髓间充质干细胞(bone marrow mesenchymal stem cell,BMMSC)对骨髓CD34+细胞增殖的影响,为骨髓CD34+细胞体外扩增的深入研究提供依据。用MACS进行骨髓CD34+细胞的分选;用流式细胞术进行CD34+细胞纯度鉴定;用密度梯度离心法分离引产胎儿骨髓单个核细胞,结合贴壁法进行BMMSC的体外扩增培养;用流式细胞术进行BMMSC表面标志鉴定;用Transwell培养板培养CD34+细胞与BMMSC;用自动细胞计数仪计数有活性的CD34+细胞数量;用MTT比色法检测骨髓CD34+细胞增殖活性。流式细胞术检测结果显示分选所得的CD34+细胞纯度达到90%以上;流式细胞术检测显示传至第3代继续培养72h后的BMMSC高表达CD44、CD29,而HLA-DR、CD45、CD34表达阴性,说明所培养的BMMSC纯度很高;Transwell培养板培养CD34+细胞与BMMSC,在倒置显微镜下观察以及自动细胞计数仪计数发现,实验组有活性的CD34+细胞数量高于对照组(P<0.05);采用MTT比色法检测骨髓CD34+细胞的增殖活性,实验组高于对照组(P<0.05)。以上结果说明BMMSC有促进骨髓CD34+细胞增殖的作用,这种作用可能与其分泌的细胞因子有关。     

兔骨髓间充质干细胞的生物学特征及原代培养

背景：兔来源的骨髓间充质干细胞是具有较强的体外增殖和多系统分化潜能的成体干细胞,在组织工程及生物治疗领域蕴藏着巨大的潜能。 目的：体外培养扩增、鉴定兔骨髓间充质干细胞,观察骨髓间充质干细胞的生物学特征。 方法：无菌条件下抽取兔骨髓,分别运用全骨髓贴壁法和Percoll密度梯度离心法体外分离骨髓间充质干细胞,利用差速贴壁原理对细胞进行纯化扩增。在显微镜下观察细胞形态特征及生长规律,流式细胞技术检测细胞表面抗原标记物的表达。 结果与结论：兔骨髓间充质干细胞贴壁时间短,增殖快,经过细胞传代后能够获得进一步纯化的细胞,杂质细胞减少。原代细胞形态即呈现三角形、长梭形、纺锤形的贴壁细胞特征。第 5代骨髓间充质干细胞呈典型的极性漩涡状生长,形态单一均匀,不具有表达造血前体细胞表面标志抗原CD34和白细胞表面标志抗原CD45的表面标记物功能,但是具有能够表达出整合素家族的成员 CD29 及黏附分子CD44的特点。说明经全骨髓贴壁法和Percoll密度梯度离心法体体外分离培养的细胞在形态学、细胞表面标志物表达和多向分化能力方面具有干细胞生物学特性,经流式细胞分析鉴定为兔骨髓间充质干细胞。 中国组织工程研究杂志出版内容重点：干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程     

脐血单个核细胞与骨髓间充质干细胞滋养层的共培养

背景：骨髓间充质干细胞具有维持骨髓正常造血功能,在造血调控中发挥重要的作用。 目的：观察骨髓间充质干细胞的生物学性状和多向分化能力,并检测其在体外支持造血的能力。 方法：利用密度梯度培养法分离骨髓单个核细胞进行培养,流式细胞仪检测骨髓间充质干细胞表型;接种脐血单个核细胞于骨髓间充质干细胞滋养层培养板上共培养,观察粒-单系祖细胞集落变化。 结果与结论：骨髓间充质干细胞呈典型的成纤维样细胞形态,强表达CD44,CD29,不表达CD34和CD106。可促进脐血单个核细胞扩增并形成造血祖细胞集落。提示骨髓间充质干细具有造血支持作用。     

A novel monoclonal antibody (STRO-3) identifies an isoform of tissue nonspecific alkaline phosphatase expressed by multipotent bone marrow stromal stem cells

Numerous studies support the concept that the nonhemopoietic cells of the bone marrow (BM), are derived from a population of multipotent bone marrow stromal stem cells (BMSSCs), which reside in perivascular niches within the bone marrow. These BMSSCs are thought to give rise not only to more cells that are phenotypically and functionally identical but also differentiated, lineage-committed mesenchymal progeny, including chondrocytes, smooth muscle cells, adipocytes, and osteoblasts. Recently, we have generated a novel monoclonal antibody (mAb) (designated STRO-3) that reacts with a minor subset of STRO-1(+) cells contained within adult BM aspirates and does not react with CD34(+) hemopoietic stem cells. Our results also show that STRO-3 identifies a high proportion of BMSSCs that possess extensive proliferative and multilineage differentiative capacity. Using retroviral expression cloning, we determined that STRO-3 binds to tissue nonspecific alkaline phosphatase (TNSALP), a cell-surface glycoprotein usually associated with cells of the osteoblast lineage. Studies presented here suggest that in addition to being expressed by osteoblasts, TNSALP may also represent a marker of immature BMSSCs in vivo. Finally, these studies suggest that antibodies to TNSALP may be used as an effective single marker of enrichment of BMSSCs from various tissues.     

明胶-Ficoll法分离骨髓单个核细胞的方法学探讨

目的 比较直接利用Ficoll一步法和明胶- Ficoll两步法分离骨髓单个核细胞(MNCs)的效果.方法 无菌条件下取入骨髓液40mL,平均分为两份.一份采用Ficoll一步法直接分离MNCs；另一份先采用明胶沉淀红细胞后,再利用Ficoll分离MNCs.比较两者的分离效率、细胞活力、CD34+和CD44 +/CD7...     

Angiogenesis in rat uterine cicatrix after injection of autologous bone marrow mesenchymal stem cells

Results of injection of autologous bone marrow mesenchymal stem cells with transfected GFP gene into the rat uterine horn cicatrix were studied by light microscopy. Large groups of blood vessels with blood cells inside were seen after injection of autologous bone marrow cells into the cicatrix on the right horn, formed 2 months after its ligation; no groups of vessels of this kind were found in the cicatrix in the contralateral horn. Examination of unstained sections in reflected UV light showed sufficiently bright fl uorescence in the endothelium and outer vascular membrane in the uterine horn cicatrix only on the side of injection. Hence, autologous mesenchymal stem cells injected into the cicatrix formed the blood vessels due to differentiation into endotheliocytes and pericytes. The expression of GFP gene not only in the vascular endothelium, but also in vascular outer membranes indicated that autologous mesenchymal stem cells differentiated in the endothelial and pericytic directions.     

骨髓干细胞的鉴定技术

背景：科研中常用到单一特定的干细胞,但如何证明所提取的细胞是必需细胞就要用到鉴定技术。 目的：介绍分离后的骨髓间充质干细胞和骨髓造血干细胞鉴定技术。 方法：由第一作者检索1998年1月至2010年12月PubMed数据及维普数据库有关骨髓间充质干细胞及骨髓造血干细胞的鉴定的文献。英文检索词为“Bone marrow stem cell,bone marrow hematopoietic stem cells ,Identification”;中文检索词为“骨髓造血干细胞;骨髓间充质干细胞;鉴定”。排除重复性研究,31篇进行归纳总结。 结果与结论：目前没有特定的某一种表面标记物能作为鉴定骨髓间充质干细胞的“金标准”,可从3方面对其进行检测：细胞形态和培养特性;细胞标记分子;多种分化潜能。一般认为细胞呈类纤维细胞形态、培养可以贴壁分裂增生具有表面CD44、CD29的细胞,而不表达CD34、CD45等阴性标记物,可初步判断为间充质干细胞。目前真正的造血干细胞表型尚难以确定。造血干细胞的检测主要方法有脾克隆形成法、外克隆形成法及流式细胞测量法等。     

小鼠脂肪源和骨髓源间充质干细胞表面标记表达的比较

目的探讨小鼠脂肪源间充质干细胞(ADMSCs)和骨髓源间充质干细胞(BMSCs)表面标记表达的差异。方法分别对小鼠脂肪源和骨髓源间充质干细胞进行成骨、成脂、成心肌分化诱导、鉴定;流式细胞术与细胞免疫荧光法检测CD29、CD44、CD45和CD73的表达并进行比较。结果 BMSCs形态均一,呈长梭形;ADMSCs形态多样,呈梭形、星形、多角形等,胞体较大,表面分泌物较多;两者均可诱导分化为成骨细胞、脂肪细胞和心肌样细胞。流式细胞术检测显示,BMSCs表面分子CD29、CD44和CD73表达率分别为(83.43±1.97)%、(90.33±0.81)%、(2.63±0.42)%;ADMSCs表面分子CD29和CD44的表达率分别为(53.1±1.05)%、(34.8±2.1)%,CD73表达不稳定,在1.8%~19.7%之间波动。两种细胞均不表达造血干细胞标记物CD45。免疫荧光显示,CD73分子与部分CD29、CD44阳性细胞共表达。结论小鼠BMSCs和ADMSCs均具有成脂、成骨、成心肌分化能力,但是在形态上和分子表达上均存在差异。BMSCs的CD44和CD29表达高于ADMSCs;而CD73的表达则相反,CD73在两种细胞的表达均较低,在ADMSCs的表达不稳定。     

大鼠骨髓间充质干细胞体外分离培养与CM-DiI荧光标记

背景：目前,对骨髓间充质干细胞的分离、纯化和扩增还没有统一的、标准化的方法。CM-DiI作为荧光标记物稳定、可靠、标记率高、标记简便。 目的：建立SD大鼠骨髓间充质干细胞体外分离培养及标记的方法。 方法：取2只体质量50-100 g雄性SD大鼠,无菌条件下采集双侧股骨、胫骨骨髓,用全骨髓贴壁分离法和密度梯度离心法培养出原代骨髓间充质干细胞,通过及时、反复传代对细胞进行扩增纯化,在体外用荧光活性染料CM-DiI标记第3代骨髓间充质干细胞后作为供体细胞来源。 结果与结论：用全骨髓贴壁分离法和密度梯度离心法两种方法均能成功体外分离培养骨髓间充质干细胞,经流式细胞仪分析,培养出的细胞CD34阳性率为17.5%,CD44阳性率为97.9%、CD90阳性率为91%,与骨髓间充质干细胞表面抗原一致。但培养出的细胞数量全骨髓贴壁分离法明显多于密度梯度离心法,两种方法培养骨髓间充质干细胞的细胞活力和增殖能力无明显差异。CM-DiI能够成功荧光标记骨髓间充质干细胞,CM-DiI作为荧光标记物稳定、可靠、标记率高、标记简便。中国组织工程研究杂志出版内容重点：干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程全文链接：     

慢病毒介导GDNF基因对食蟹猴骨髓间充质干细胞生物学特性的影响

 目的 探讨慢病毒介导胶质源性神经营养因子（GDNF）对食蟹猴骨髓间充质干细胞（cMSCs）生物学特性的影响。方法 无菌条件下取食蟹猴骨髓,梯度密度离心法分离培养cMSCs,含有GDNF基因的慢病毒感染cMSCs。利用ELISA、Real-time PCR、流式细胞术（FCM）、BrdU掺入法等实验方法,观察慢病毒感染后GDNF基因的表达,以及慢病毒感染前后的cMSCs的表面抗原表达、体外增殖和分化能力。结果 感染慢病毒后,体外培养的cMSCs高表达GDNF。慢病毒感染后cMSCs的细胞形态无明显改变,细胞表面标志CD34、CD90和Stro-1阳性细胞比例增高。BrdU掺入结果显示,与对照组（0.61±0.11）比较,GDNF慢病毒感染组（0.50±0.13）明显降低（P＜0.05）。但GDNF慢病毒感染并没有影响cMSCs体外脂肪诱导分化能力。结论 慢病毒感染影响cMSCs的表面抗原表达和体外增殖能力,但对cMSCs体外脂肪分化能力无影响。     

红景天苷与淤胆血清诱导骨髓间充质干细胞向肝样细胞分化

背景：大量实验证实骨髓间充质干细胞在诱导因子及特定微环境下可诱导分化为肝细胞,并已广泛用于终末肝病的临床替代治疗,而其最佳诱导条件目前尚不清楚。 目的：初步探讨中草药红景天苷联合淤胆大鼠血清体外诱导大鼠骨髓间充质干细胞向肝细胞分化的可行性和有效性。　 方法：采用全骨髓贴壁培养法从大鼠骨髓中获取骨髓间充质干细胞,流式法检测干细胞表型;胆总管结扎切断法制备大鼠淤胆血清。取第3代骨髓间充质干细胞分3组体外诱导培养：空白对照组,基础培养基+5%淤胆血清;红景天苷组：基础培养基+5%淤胆血清+30 µmol/L红景天苷;阳性对照组：基础培养基+5%淤胆血清+20 µg/L肝细胞生长因子;观察各组诱导培养过程中细胞形态变化,RT-PCR法、Western-Blot法检测各诱导组肝细胞特异性蛋白表达水平。 结果与结论：骨髓间充质干细胞高表达CD90、CD105,不表达CD45、CD14、CD34、CD79a;空白对照组、红景天苷组、阳性对照组细胞在诱导培养中均出现多角及双核细胞;空白对照组、红景天苷组、阳性对照组在诱导培养7 d开始出现甲胎蛋白、白蛋白的mRNA及蛋白表达;在同一时间点空白对照组表达率最低(P < 0.05),红景天苷组、阳性对照组间比较,差异无显著性意义(P > 0.05)。与传统淤胆血清体外诱导相比,红景天苷联合淤胆血清能更有效诱导骨髓间充质干细胞向肝样细胞分化。中国组织工程研究杂志出版内容重点：干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程全文链接：     

骨髓间充质干细胞、骨形态发生蛋白和骨发生潜力与髋关节置换后假体的稳定性

背景：骨髓微环境的成骨潜力与全髋关节置换后假体长期稳定性之间的关系尚不清楚。作者提出一个观点,通过骨髓成骨潜力的分析可以预测假体的契合强度。 目的：以线性回归分析评估全髋关节置换患者骨髓间充质干细胞活力、成骨蛋白信号通路相关基因表达与成骨发生在假体稳定性中的相关性。 方法：选择12例接受全髋关节置换的患者,置换过程中取股骨近端的骨髓组织在体外扩增至子一代,取出细胞进行流式细胞学或RNA检测,以线性回归分析评估成骨潜力各项指标之间的相关性。 结果与结论：患者骨髓间充质干细胞中Stro-1阳性细胞的数量、碱性磷酸酶活性以及成骨相关基因的表达情况具有较大的个体差异。Stro-1阳性细胞比率与骨形成蛋白受体1a,MSX2,Runx2、碱性磷酸酶活性存在显著相关性(P < 0.05),细胞经成骨培养后碱性磷酸酶活性与Runx2表达也存在显著相关性(P < 0.05)。提示在全髋关节置换患者中骨髓微环境的成骨潜力具有较大的个体差异,而骨髓间充质干细胞各项指标对于全关节置换长期稳定性的潜在影响有待进一步深入研究。