2型糖尿病患者脂肪间充质干细胞成脂肪分化能力的实验研究

目的 探讨2型糖尿病(T2DM)患者与健康者脂肪间充质干细胞(ADSCs)成脂肪分化能力.方法 取T2DM患者与健康者脂肪组织,分离培养出ADSCs.取第3代细胞接种,比较两组细胞细胞表型及生长速度的差异.加入成脂肪诱导液,观察两组细胞成脂肪分化情况,于第14天加入油红O对细胞进行染色并观察,用异丙醇对油红O进行萃取并比较两组细胞吸光度值,通过实时荧光定量(PCR)法比较两组细胞成脂肪分化14 d时PPAR-γ、C/EBP-α和C/EBP-β的表达水平.结果 T2DM患者和健康者ADSCs在细胞表型及生长速度方面比较差异无统计学意义(P＞0.05),成脂肪诱导分化14 d时T2DM患者ADSCs油红O吸光度值明显高于健康者ADSCs,T2DM患者ADSCs PPAR-γ、C/EBP-a、C/EBP-β表达水平明显高于健康者ADSCs.结论 T2DM患者ADSCs成脂肪分化能力明显高于健康者,其可能是T2DM患者容易并发肥胖的原因之一.

Experimental research of adipogenic differentiative ability of adipose tissue-derived stromal cells in patients with type 2 diabetes mellitus

Objective To investiagte the adipogenic differentiative ability of adipose tissue-derived stromal cells(ADSCs) between the patients with type 2 diabetes mellitus(T2DM) and healthy persons.Methods The adipose tissues were taken from the adipose tissue in T2DM patients and healthy persons for separating and culturing ADSCs.The cells of third generation were taken for inoculation.The difference in cellular phenotype and growth speed were compared between the two groups.Adding adipogenesis inducing fluid,the adipogenic differentiative situation was observed in the two groups.The oil red O was added on 14 d for conducting the cell staining and observation.The oil red O was extracted by isopropanol,and the cellular absorbances were compared between two groups.Meanwhile,the expression of PPAR-γ,C/EBP-α and C/EBP-β on 14 d of adipogenic differentiation were compared between two groups by using qPCR method.Results The cellular phenotype and growth speed of ADSCs had no statisticat difference between T2DM patients and healthy persons.On 14 d of adipogenic differentiation,the oil red O absorbance value of AD-SCs in T2DM patients was significantly higher than that in the healthy persons,and the expression of PPAR-γ,C/EBP-α and C/EBP-β were significantly higher than those in the healthy persons.Conclusion The adipogenic differentiative ability of ADSCs in T2DM patients is obviously higher than that in healthy persons,which may be one of causes easy to be obese in T2DM patients.