共查询到20条相似文献,搜索用时 15 毫秒
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骨髓基质干细胞(Bone marrow stromal cells,BMSCs)是一种具有组织修复和免疫调节功能的多能干细胞,它主要存在于骨髓中,然而,如今我们发现,在其他的一些组织中也存在它的身影,例如:脂肪组织、肌肉组织和肌腱组织等。通过骨髓穿刺的方法可以很容易的获得骨髓基质干细胞,它在体外有很强的增殖能力,即使没有动物血清和人工生长因子也可以用进行细胞培养。缺血性骨坏死可以由很多病因引起,研究发现,自身免疫性疾病和血液系统疾病治疗应用的激素与缺血性骨坏死的发生具有很大的相关性,但是,激素的应用在一些严重的疾病中往往又是不可避免的,这就需要我们找到一种方法来预防和治疗激素相关缺血性骨坏死。现在,治疗缺血性骨坏死的标准方法是髓芯减压术,但到了疾病晚期的时候,髓芯减压术治疗的效果就已经微乎其微了,由于骨髓基质干细胞所具有的分化潜能、易于获得和增殖的能力,使它可能成为治疗缺血性骨坏死的一种潜在的补充方式。 相似文献
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Zheng-Wei Li Cheng-dong Piao Hong-Hui Sun Xian-Sheng Ren Yun-Shen Bai 《Cell biochemistry and biophysics》2014,68(2):437-442
Bone marrow mesenchymal stromal cells (BMSCs) are the common precursors for both osteoblasts and adipocytes. With aging, BMSC osteoblast differentiation decreases whereas BMSC differentiation into adipocytes increases, resulting in increased adipogenesis and bone loss. In the present study, we investigated the effect of asiatic acid (AA) on adipocytic differentiation of BMSCs. AA inhibited the adipogenic induction of lipid accumulation, activity of glycerol-3-phosphate dehydrogenase, and expression of marker genes in adipogenesis: peroxisome proliferation-activated receptor (PPAR)γ, adipocyte fatty acid-binding protein (ap) 2, and adipsin. Further, we found that AA did not alter clonal expansion rate and expression of C/EBPβ, upstream key regulator of PPARγ, and binding activity of C/EBPβ to PPARγ promoter was not affected by AA as well. These findings suggest that AA may modulate differentiation of BMSCs to cause a lineage shift away from the adipocytes, and inhibition of PPARγ by AA is through C/EBPβ-independent mechanisms. Thus, AA could be a potential candidate for a novel drug against osteoporosis. 相似文献
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目的:研究表皮生长因子(EGF)在体外诱导兔骨髓基质干细胞(BMSCs)向成纤维细胞增殖分化,为韧带组织工程种子细胞提供可能的来源。方法:以EGF对体外培养的BMsCs进行诱导分化培养,相差显微镜观察细胞生长,MTT检测细胞的增殖,免疫组化半定量细胞的分化。结果:诱导后7d、14d时,诱导组呈现更均一的纤维细胞样的带有长突起的纺锤形细胞,呈束状排列,并且具有更高的细胞密度;诱导组在7d、14d细胞增殖均比对照组快;第10d时,诱导组、对照组胶原Ⅰ、Ⅲ染色均为阳性,但诱导组有更高的染色密度;诱导组、对照组胶原Ⅱ染色阴性。结论:BMSCs经。EGF。诱导后细胞增殖,并且能刺激细胞外基质的表达,基本符合肌腱和韧带组织工程的要求。 相似文献
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骨髓基质细胞是研究最广泛的成体干细胞,用于临床细胞移植与基因治疗有诸多优点,论述了具有多向分化潜能的骨髓基质细胞,应用于细胞移植与基因治疗中的研究现状及发展前景 。 相似文献
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It has been reported that rat bone marrow stromal cells (BMSCs) are differentiated into neuronal cells by administration of
2-mercaptoethanol [Woodbury et al (2000) J Neurosci Res 61:364–370]. In this study, we examined the effects of various sulfhydryl
(SH) compounds on the differentiation of BMSCs obtained from rat femurs. Neuronal differentiation was detected morphologically
and immunocytochemically. It was found that the cells treated with reduced glutathione (GSH) apparently differentiated into
neurons, showing extensive processes, and expressing neuron-specific enolase and microtubule-associated protein 2. Glutathione
monoethyl ester (GEE), which increased the cellular GSH content, showed no effect on the expression of neuronal markers. It
is concluded that the neural differentiation of BMSCs occurs by the administration of GSH. It was suggested that extracellular
and not intracellular GSH have effects on the induction of the neuronal differentiation of BMSCs. 相似文献
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Hao Ding Song Chen Wen-Qi Song You-Shui Gao Jun-Jie Guan Yang Wang Yuan Sun Chang-Qing Zhang 《International journal of biological sciences》2014,10(7):746-756
One of the big challenges in tissue engineering for treating large bone defects is to promote the angiogenesis of the tissue-engineered bone. Hypoxia inducible factor-1α (HIF-1α) plays an important role in angiogenesis-osteogenesis coupling during bone regeneration, and can activate a broad array of angiogenic factors. Dimethyloxaloylglycine (DMOG) can activate HIF-1α expression in cells at normal oxygen tension. In this study, we explored the effect of DMOG on the angiogenic activity of bone mesenchymal stem cells (BMSCs) in the tissue-engineered bone. The effect of different concentrations of DMOG on HIF-1a expression in BMSCs was detected with western blotting, and the mRNA expression and secretion of related angiogenic factors in DMOG-treated BMSCs were respectively analyzed using qRT-PCR and enzyme linked immunosorbent assay. The tissue-engineered bone constructed with β-tricalcium phosphate (β-TCP) and DMOG-treated BMSCs were implanted into the critical-sized calvarial defects to test the effectiveness of DMOG in improving the angiogenic activity of BMSCs in the tissue-engineered bone. The results showed DMOG significantly enhanced the mRNA expression and secretion of related angiogenic factors in BMSCs by activating the expression of HIF-1α. More newly formed blood vessels were observed in the group treated with β-TCP and DMOG-treated BMSCs than in other groups. And there were also more bone regeneration in the group treated with β-TCP and DMOG-treated BMSCs. Therefore, we believed DMOG could enhance the angiogenic activity of BMSCs by activating the expression of HIF-1α, thereby improve the angiogenesis of the tissue-engineered bone and its bone healing capacity. 相似文献
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骨髓基质干细胞多向分化的可能机制 总被引:6,自引:1,他引:5
近年来 ,围绕骨髓基质细胞分化机制的问题 ,大致有两种假说。有人认为骨髓基质细胞在其细胞的基因组内有几套“程序” ,在不同的外界环境下 ,会有相应的一套基因开启 ,从而分化成某种终末细胞。而另外一些人则认为骨髓基质细胞是通过与不同组织的细胞发生融合而实现向该组织分化的。在前人分化实验机理研究的基础上 ,认为骨髓基质细胞在分化成一些中胚层来源的细胞 ,如脂肪细胞 ,血细胞等时 ,可以直接通过靶基因的开启或关闭分化。而在跨胚层向外胚层或内胚层分化时 ,则需要通过细胞融合这一过程来最终分化成这些组织器官的特定细胞。 相似文献
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Chunyan Dai Gong Chen Yaqiong Dong Jianlei Duan Shuxiang Wang Jinchao Zhang 《Biological trace element research》2013,156(1-3):188-195
Bone is one of the main target organs for the lanthanides (Ln). Biodistribution studies of Tm-based compounds in vivo showed that bone had significant uptake. But the effect of Tm3+ on primary mouse bone marrow stromal cells (BMSCs) has not been reported. So we investigated the effect and underlying mechanisms of Tm3+ on BMSCs. Cell viability, cell apoptosis, reactive oxygen species (ROS) level, lactate dehydrogenase (LDH) activity and mitochondrial membrane potential (MMP) were studied. The results indicated that Tm3+ increased the viability of BMSCs at concentrations of 1?×?10?7, 1?×?10?6, 1?×?10?5, and 1?×?10?4 mol/L in a dose-dependent manner, turned to decrease the viability of BMSCs at the highest concentration of 1?×?10?3 mol/L for 24, 48, and 72 h. Tm3+ at 1?×?10?3 mol/L promoted apoptosis of BMSCs, increased the ROS and LDH levels, and decreased MMP in BMSCs. Taken together, we demonstrated that Tm3+ at 1?×?10?3 mol/L might induce cellular apoptosis through mitochondrial pathway. These results may be helpful for more rational application of Tm-based compounds in the future. 相似文献
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人骨髓基质细胞体外分离及定向培养内皮细胞 总被引:2,自引:0,他引:2
用Ficoll(比重1.077 g/ml)从正常成人骨髓中分离骨髓基质细胞(BMSCs),DMEM-HG 培养基内含20?S、GM-CSF(100 u/ml)、VEGF(10 ng/ml)、FGF(5 ng/ml)、L-谷氨酰胺(2mmol/ L)、肝素(90 u/ml),以及抗生素液进行定向培养和扩增其中的内皮细胞(ECs),Ⅷ因子相关抗原的免疫组化法和透射电镜观察(TEM)鉴定其细胞的性质。结果5.0×105个BMSCs在体外经定向ECs 培养和扩增8代后,获得了6.0×109个ECs,扩增了约1.2×104倍。70%-80%的细胞对Ⅷ因子相关抗原免疫组化呈阳性反应;光镜下细胞呈典型的“鹅卵石”样;TEM下可观察到胞浆内有Weible- palade小体,证实为内皮细胞。实验表明,BMSCs在体外分离和定向培养的ECs,经扩增后可能是心血管组织工程所需种子细胞的又一个重要来源。 相似文献
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Ying X Cheng S Wang W Lin Z Chen Q Zhang W Kou D Shen Y Cheng X Rompis FA Peng L Zhu Lu C 《Biological trace element research》2011,144(1-3):306-315
Bone marrow stromal cells (BMSCs) have been well established as an ideal source of cell-based therapy for bone tissue engineering applications. Boron (B) is a notable trace element in humans; so far, the effects of boron on the osteogenic differentiation of BMSCs have not been reported. The aim of this study was to evaluate the effects of boron (0, 1, 10,100, and 1,000?ng/ml) on osteogenic differentiation of human BMSCs. In this study, BMSCs proliferation was analyzed by cell counting kit-8 (CCK8) assay, and cell osteogenic differentiation was evaluated by alkaline phosphatase (ALP) activity assay, Von Kossa staining, and real-time PCR. The results indicated that the proliferation of BMSCs was no different from the control group when added with B at the concentration of 1, 10, and 100?ng/ml respectively (P?>?0.05); in contrast, 1,000?ng/ml B inhibited the proliferation of BMSCs at days?4, 7, and 14 (P?0.05). By ALP staining, we discovered that BMSCs treated with 10 and 100?ng/ml B presented a higher ALP activity compared with control (P?0.05). By real-time PCR, we detected the messenger RNA expression of ALP, osteocalcin, collagen type I, and bone morphogenetic proteins 7 were also increased in 10 and 100?ng/ml B treatment groups (P?0.05). The calcium depositions were increased in 1 and 10?ng/ml B treatment groups (P?0.05). Taken all together, it was the first time to report that B could increase osteogenic effect by stimulating osteogenic differentiation-related marker gene synthesis during the proliferation and differentiation phase in human BMSCs and could be a promising approach for enhancing osteogenic capacity of cell-based construction in bone tissue engineering. 相似文献
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E. I. Domaratskaya E. I. Bueverova O. D. Payushina V. I. Starostin 《Biology Bulletin》2005,32(3):216-220
Effect of alkylating agent dipin was studied on hematopoietic (CFU-S) and stromal (CFU-F) progenitor cells. Single administration of dipin (0.06 mg/g) to adult (CBA × C57Bl/6) F1 hybrid mice induced a long-term (2 years) oscillations in the numbers of day 7 CFU-S and day 11 CFU-S in the bone marrow and spleen. Dipin also damaged the hematopoietic stroma as indicated by decreased numbers of CFU-F which remained low for at least a year. The capacity of stromal cells to form ectopic hematopoietic foci was considerably decreased and also remained low for 10 months. The obtained data suggest high dipin sensitivity of the earliest hematopoietic and stromal cells. The dynamics of CFU-S numbers in the hematopoietic organs supports their functioning on the basis of clonal succession (Kay, 1965).__________Translated from Izvestiya Akademii Nauk, Seriya Biologicheskaya, No. 3, 2005, pp. 267–272.Original Russian Text Copyright © 2005 by Domaratskaya, Bueverova, Payushina, Starostin. 相似文献
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Uremic Serum Impairs Osteogenic Differentiation of Human Bone Marrow Mesenchymal Stromal Cells
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Elena Della Bella Stefania Pagani Gianluca Giavaresi Irene Capelli Giorgia Comai Chiara Donadei Maria Cappuccilli Gaetano La Manna Milena Fini 《Journal of cellular physiology》2017,232(8):2201-2209
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Thibaud André Nathalie Meuleman Basile Stamatopoulos Cécile De Bruyn Karlien Pieters Dominique Bron Laurence Lagneaux 《PloS one》2013,8(3)
Background
In multiple myeloma, bone marrow mesenchymal stromal cells support myeloma cell growth. Previous studies have suggested that direct and indirect interactions between malignant cells and bone marrow mesenchymal stromal cells result in constitutive abnormalities in the bone marrow mesenchymal stromal cells.Design and Methods
The aims of this study were to investigate the constitutive abnormalities in myeloma bone marrow mesenchymal stromal cells and to evaluate the impact of new treatments.Results
We demonstrated that myeloma bone marrow mesenchymal stromal cells have an increased expression of senescence-associated β-galactosidase, increased cell size, reduced proliferation capacity and characteristic expression of senescence-associated secretory profile members. We also observed a reduction in osteoblastogenic capacity and immunomodulatory activity and an increase in hematopoietic support capacity. Finally, we determined that current treatments were able to partially reduce some abnormalities in secreted factors, proliferation and osteoblastogenesis.Conclusions
We showed that myeloma bone marrow mesenchymal stromal cells have an early senescent profile with profound alterations in their characteristics. This senescent state most likely participates in disease progression and relapse by altering the tumor microenvironment. 相似文献18.
人骨髓基质细胞中糖基化磷脂酰肌醇特异性磷脂酶DcDNA的克隆 总被引:6,自引:0,他引:6
为探讨人糖基化磷脂酰肌醇特异性磷脂酶D(GPI PLD)cDNA的结构及功能 ,应用RT PCR从人骨髓基质细胞中克隆了长约 2 6kb的GPI PLDcDNA ,包含完整阅读框架 ,编码 2 3个氨基酸的信号肽及 817个氨基酸的成熟肽 .该cDNA与人胰腺GPI PLDcDNA几乎百分之百同源 ,与人肝脏GPI PLDcDNA同源性为 95 %,氨基酸同源性为 94 %,3者对应的结构基因只有 1个 ,位于人类第 6号染色体上 ,基因组序列长约 80kb ,包括 2 5个外显子 .构建克隆的GPI PLDcDNA的真核表达载体 ,通过脂质体转染能表达GPI锚定的胎盘型碱性磷酸酶 (PLAP)而无GPI PLD活性的G9细胞 ,同时设立对照组检测GPI PLDcDNA的功能 .结果显示 ,对照组细胞几乎检测不到GPI PLD活性 ,其表达的PLAP主要位于细胞膜上 ;而转染GPI PLDcDNA的G9细胞能检测到较高水平的GPI PLD活性 ,而且大部分酶活性存在于培养液中 ,其表达的PLAP也主要被释放入培养液 .结果证实 ,从人骨髓基质细胞中克隆的GPI PLDcDNA有生物学功能 ,它能释放细胞膜上GPI锚定蛋白质 . 相似文献
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骨髓基质细胞的分离、鉴定以及TH基因的转染与表达 总被引:11,自引:0,他引:11
目的是探索骨髓基质细胞的分离培养、鉴定及其接受并表达TH基因的能力。实验中通过密度梯度离心法成功地从成年SD大鼠骨髓中分离获得了骨髓基质干细胞 ,并用流式细胞仪对其进行鉴定 ,纯度可达 75 %。进一步采用复制缺陷型腺相关病毒载体介导的基因转染方法 ,将之改造成为携带lacZ与TH基因的工程细胞 ,经X gal染色和TH免疫组化检测 ,转染效率为 (74 .6± 19.4 ) %。实验结果表明骨髓基质细胞易于接受并表达外源基因 ,有望作为运载细胞应用于帕金森病的基因治疗。 相似文献
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Schegel'skaya E. A. Mikulinskii Yu. E. Revishchin A. V. Omel'chenko E. A. Kul'shin V. E. Grishchenko V. I. Korochkin L. I. 《Russian Journal of Developmental Biology》2003,34(3):185-191
The possibility of differentiation of insulin-producing cells and neural and glial elements was demonstrated in the culture of bone marrow stromal cells. The perspectives of use of the bone marrow stromal cells in clinical medicine are considered. 相似文献