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人骨髓间充质干细胞中Toll样受体的表达特征

Zhongguo shi yan xue ye xue za zhi / Zhongguo bing li sheng li xue hui = Journal of experimental hematology / Chinese Association of Pathophysiology(2009)

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Abstract
本研究探讨健康供体骨髓源性间充质干细胞(BM-MSC)中Toll样受体(TLR)的表达特征。用Ficoll法分离培养健康供体的BM-MSC;流式细胞术(FCM)检测BM-MSC中CD34、CD45、HLA-DR、CD44和CD71的表达;免疫细胞化学法检测爬片BM-MSC细胞中CD71的表达;应用茜素红染色和油红染色检测BM-MSC细胞成骨及成脂诱导情况;半定量RT-PCR法检测TLR1-10 mRNA的表达。结果表明,体外分离培养的BM-MSC中CD34、CD45和HLA-DR表达呈阴性,CD44和CD71表达呈阳性;爬片BM-MSC细胞中CD71的表达呈阳性。BM-MSC经成骨和成脂诱导后出现钙沉积和脂滴,茜素红染色和油红染色均呈阳性。BM-MSC中TLR1-10 mRNA均有表达,其中TLR2、TLR3、TLR4、TLR7、TLR8、TLR9均高表达,TLR1、TLR5、TLR6、TLR10均低表达。结论:从健康供体骨髓中分离培养的BM-MSC表达不同水平的TLR1-10 mRNA。
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Key words
mesenchemal stem cell,toll-like receptor,bone marrow
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