生长转化因子TGF-β1基因转染对大鼠脂肪干细胞的影响
发布时间:2018-06-19 07:13
本文选题:脂肪干细胞 + TGF-β1 ; 参考:《复旦大学》2010年博士论文
【摘要】: 目的:在明确转化生长因子β(TGF-β)诱导脂肪干细胞(ADSCs)向软骨组织细胞分化作用的基础上;基于转基因技术实现ADSCs的TGF-β1基因修饰,研究TGF-β1在ADSCs内表达对其分化的作用,阐明其成为理想软骨组织工程种子细胞价值。 方法:运用TGF-β1重组腺病毒转染ADSCs,研究ADSCs表达TGF-β1诱导其向软骨组织分化作用的影响。 结果:1.转染后ADSCs中软骨形成相关基因的表达情况RT-PCR检测结果显示CollagenⅠ, CollagenⅡ, CollagenⅩ, Aggrecan在转染后的ADSCs细胞中明显表达增高,而ALP, PPARγ2则没有变化。 2.GAG含量检测:TGF-β1基因转染的ADSCs中表达的GAG含量,随着转染时间的增加也显著增加。第5,10天时,细胞内的GAG含量与对照相比显著增加(p0.01)。而第10天的GAG含量较第5天也显著增加(p0.01)。 3.细胞免疫组化:TGF-β1基因转染的ADSCs, CollagenⅡ和Aggrecan的染色均为阳性。 结论:1.TGF-β1基因转染ADSCs内CollagenⅠ, CollagenⅡ, CollagenⅩ, Aggrecan表达明显增高,诱导其向软骨组织分化。2.TGF-β1基因转染ADSCs具有成为理想软骨组织工程种子细胞价值。
[Abstract]:Aim: to investigate the effect of TGF- 尾 1 gene modification of ADSCs on the differentiation of ADSCs into chondrocytes by TGF- 尾), and to study the effect of TGF- 尾 1 expression on the differentiation of ADSCs by TGF- 尾 1 expression in ADSCs, and to investigate the effect of TGF- 尾 1 expression in ADSCs on the differentiation of ADSCs into chondrocytes. To elucidate its value as an ideal seed cell for cartilage tissue engineering. Methods: ADSCswere transfected with TGF- 尾 1 recombinant adenovirus. The effects of TGF- 尾 1 expression on the differentiation of ADSCs into chondrocytes were studied. The result is 1: 1. The expression of cartilage formation related genes in transfected ADSCs was detected by RT-PCR. The results showed that the expression of Collagen 鈪,
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