AIM: To compare the phenotypic and neural differentiation potential of human bone marrow derived multipotent adult progenitor cells (MAPC) and mesenchymal stem cells (MSC). METHODS: Cultures of MAPC and MSC were estab...AIM: To compare the phenotypic and neural differentiation potential of human bone marrow derived multipotent adult progenitor cells (MAPC) and mesenchymal stem cells (MSC). METHODS: Cultures of MAPC and MSC were established in parallel from same samples of human bone marrow (n = 5). Both stem cell types were evaluated for expression of pluripotency markers including Oct-4 and Nanog by immunocytochemistry and reversetranscription polymerase chain reaction (RT-PCR) and expression of standard mesenchymal markers including CD14, CD34, CD44, CD45, CD73, CD90, CD105 andhuman leukocyte antigen (HLA)-ABC by flow cytometry. After treatment with neural induction medium both MAPC and MSC were evaluated for expression of neural proteins [neuronal filament-200 (NF-200) and glial fibrillar acidic protein (GFAP)] by immunocytochemistry and Western blotting and neural genes [NF-200, GFAP, Tau, microtubule-associated protein (MAP)-1B, MAP-2, neuron-specific enolase (NSE) and oligodendrocyte-1 (Olig-1)] by quantitative real-time-PCR. RESULTS: MAPC had small trigonal shaped while MSC had elongated spindle-shaped morphology. The MAPC expressed Oct-4 and Nanog both at gene and protein levels, whereas MSC were negative for these pluripotent markers. MAPC were negative for HLA-ABC while MSC had high expression of HLA-ABC. In addition, MAPC as compared to MSC had significantly lower expression of CD44 (36.56% ± 1.92% vs 98.23% ± 0.51%), CD73 (15.11% ± 2.24% vs 98.53% ± 2.22%) and CD105 (13.81% ± 3.82%vs 95.12% ± 5.65%) (P < 0.001, for all) MAPC cultures compared to MSC cultures treated with neural induction medium had significantly higher fold change expression of NF-200 (0.64), GFAP (0.52), Tau (0.59), MAP-2 (0.72), Olig-1 (0.18) and NSE (0.29) proteins (P < 0.01 for Olig-1 and P < 0.001 for rest) as well as higher fold change expression of genes of NF-200 (1.34),GFAP (1.12),Tau (1.08),MAP-1B (0.92), MAP-2 (1.14) andNSE (0.4) (P < 0.001 for all). CONCLUSION: MAPC can be differentially characterized from MSC as Oct-4 and Nanog pos展开更多
目的:探讨大鼠骨髓间质中多潜能成年祖细胞(muhipotent adult progenitoi-cells or MAPCs)的体外培养与神经分化的方法,观察其增殖和分化特点。方法:采用Ficoll-Paque液(1.077g/L)和免疫微磁珠从大鼠双侧股骨和胫骨骨髓中分离与纯化出...目的:探讨大鼠骨髓间质中多潜能成年祖细胞(muhipotent adult progenitoi-cells or MAPCs)的体外培养与神经分化的方法,观察其增殖和分化特点。方法:采用Ficoll-Paque液(1.077g/L)和免疫微磁珠从大鼠双侧股骨和胫骨骨髓中分离与纯化出多潜能成年祖细胞,体外扩增,分别采用含碱性成纤维生长因子(bFGF)和脑源性神经营养因子(BDNF)、成纤维生长因子-8(FGF-8)等试剂的无血清L-DMEM诱导MAPC分化为神经元。应用免疫荧光化学技术和RT-PCR等方法对分化细胞进行鉴定。结果:多潜能成年祖细胞在休外扩增可超过50代,细胞形态和神经分化能力没有发生变化。在碱性成纤维生长因子的诱导下,MAPC形态转变为典型的神经样细胞,神经元特异性烯醇化酶(NSE)表达阳性。继续用BDNF、FGF-8持续诱导,MAPC可分化为更加成熟的神经样细胞,微管相关蛋白-2(MAP-2)表达阳性;RT-PCR显示诱导出的神经样细胞,酪氨酸羟化酶(TH)、多巴胺β-羟化酶(DBH)mRNA表达水平明显升高。结论:建立了多潜能成年祖细胞体外分离、培养的条件,探索了多潜能成年祖细胞部分生物学特性,多潜能成年祖细胞在体外可以持续增殖并可诱导分化为较成熟的神经元样细胞,它可为多潜能成年祖细胞的临床应用提供材料。展开更多
基金Supported by The Grant-in-Aid entitled"Stem cells for regenerative medicine:Isolation of Multipotent adult Progenitor Cells from Human Bone Marrow and their Clonal Expansion and Differentiation into Cardiomyocytes,Hepatocytes and Beta-islets"No.BT/PR6303/MED/14/776/2005,sanctioned by Department of Biotechnology,Government of India
文摘AIM: To compare the phenotypic and neural differentiation potential of human bone marrow derived multipotent adult progenitor cells (MAPC) and mesenchymal stem cells (MSC). METHODS: Cultures of MAPC and MSC were established in parallel from same samples of human bone marrow (n = 5). Both stem cell types were evaluated for expression of pluripotency markers including Oct-4 and Nanog by immunocytochemistry and reversetranscription polymerase chain reaction (RT-PCR) and expression of standard mesenchymal markers including CD14, CD34, CD44, CD45, CD73, CD90, CD105 andhuman leukocyte antigen (HLA)-ABC by flow cytometry. After treatment with neural induction medium both MAPC and MSC were evaluated for expression of neural proteins [neuronal filament-200 (NF-200) and glial fibrillar acidic protein (GFAP)] by immunocytochemistry and Western blotting and neural genes [NF-200, GFAP, Tau, microtubule-associated protein (MAP)-1B, MAP-2, neuron-specific enolase (NSE) and oligodendrocyte-1 (Olig-1)] by quantitative real-time-PCR. RESULTS: MAPC had small trigonal shaped while MSC had elongated spindle-shaped morphology. The MAPC expressed Oct-4 and Nanog both at gene and protein levels, whereas MSC were negative for these pluripotent markers. MAPC were negative for HLA-ABC while MSC had high expression of HLA-ABC. In addition, MAPC as compared to MSC had significantly lower expression of CD44 (36.56% ± 1.92% vs 98.23% ± 0.51%), CD73 (15.11% ± 2.24% vs 98.53% ± 2.22%) and CD105 (13.81% ± 3.82%vs 95.12% ± 5.65%) (P < 0.001, for all) MAPC cultures compared to MSC cultures treated with neural induction medium had significantly higher fold change expression of NF-200 (0.64), GFAP (0.52), Tau (0.59), MAP-2 (0.72), Olig-1 (0.18) and NSE (0.29) proteins (P < 0.01 for Olig-1 and P < 0.001 for rest) as well as higher fold change expression of genes of NF-200 (1.34),GFAP (1.12),Tau (1.08),MAP-1B (0.92), MAP-2 (1.14) andNSE (0.4) (P < 0.001 for all). CONCLUSION: MAPC can be differentially characterized from MSC as Oct-4 and Nanog pos
文摘目的:探讨大鼠骨髓间质中多潜能成年祖细胞(muhipotent adult progenitoi-cells or MAPCs)的体外培养与神经分化的方法,观察其增殖和分化特点。方法:采用Ficoll-Paque液(1.077g/L)和免疫微磁珠从大鼠双侧股骨和胫骨骨髓中分离与纯化出多潜能成年祖细胞,体外扩增,分别采用含碱性成纤维生长因子(bFGF)和脑源性神经营养因子(BDNF)、成纤维生长因子-8(FGF-8)等试剂的无血清L-DMEM诱导MAPC分化为神经元。应用免疫荧光化学技术和RT-PCR等方法对分化细胞进行鉴定。结果:多潜能成年祖细胞在休外扩增可超过50代,细胞形态和神经分化能力没有发生变化。在碱性成纤维生长因子的诱导下,MAPC形态转变为典型的神经样细胞,神经元特异性烯醇化酶(NSE)表达阳性。继续用BDNF、FGF-8持续诱导,MAPC可分化为更加成熟的神经样细胞,微管相关蛋白-2(MAP-2)表达阳性;RT-PCR显示诱导出的神经样细胞,酪氨酸羟化酶(TH)、多巴胺β-羟化酶(DBH)mRNA表达水平明显升高。结论:建立了多潜能成年祖细胞体外分离、培养的条件,探索了多潜能成年祖细胞部分生物学特性,多潜能成年祖细胞在体外可以持续增殖并可诱导分化为较成熟的神经元样细胞,它可为多潜能成年祖细胞的临床应用提供材料。
