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首页> 外文期刊>Cell biology international. >A new approach for pancreatic tissue engineering: human endometrial stem cells encapsulated in fibrin gel can differentiate to pancreatic islet beta-cell
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A new approach for pancreatic tissue engineering: human endometrial stem cells encapsulated in fibrin gel can differentiate to pancreatic islet beta-cell

机译:胰腺组织工程的新方法:包裹在纤维蛋白凝胶中的人子宫内膜干细胞可以分化为胰岛β细胞

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摘要

Metabolic diabetes mellitus as the most serious and prevalent metabolic disease in the world has various complications. The most effective treatment of type I diabetes seems to be islet cell transplantation. Shortage of donors and difficult procedures and high rate of rejection have always restricted this approach. Tissue engineering is a novel effective solution to many medical problems such as diabetes. Endometrial mesenchymal stem cells as a lineage which have the potential to differentiate to mesodermal and endodermal tissues seem to be suitable for this purpose. Fibrin hydrogel with a high degree of biocompatibility and specific properties making it similar to normal pancreas seems to be an ideal scaffold. After successfully isolating stem cells (hEnSCs) from human endometrium, a three-step protocol was used to differentiate them into pancreatic beta cells. Fibrin was used as 3D scaffold. After 2 weeks, cells formed clusters like islets cells, and secretion of insulin was measured by chemiluminescence. PDX1, proinsulin, and c-peptide as special markers of beta cells were detected by immunofiuorescence. Expression of glucagon, PDX1, and insulin genes in mRNA level was detected by Real time PCR and gel electrophoresis. The former showed higher levels of gene expression in 3D cultures. SEM analysis showed good integrity between cells and scaffold. No toxicity was detected with fibrin scaffold by MTT assay.
机译:代谢性糖尿病是世界上最严重,最普遍的代谢疾病,具有多种并发症。 I型糖尿病最有效的治疗方法似乎是胰岛细胞移植。捐助者短缺,程序困难和拒绝率高,一直限制了这种方法。组织工程学是解决许多医学问题(例如糖尿病)的新颖有效方法。具有分化为中胚层和内胚层组织潜能的子宫内膜间充质干细胞作为谱系似乎适用于此目的。具有高度生物相容性和使其与正常胰腺相似的特定特性的纤维蛋白水凝胶似乎是理想的支架。从人子宫内膜成功分离出干细胞(hEnSCs)后,采用三步操作方案将其分化为胰腺β细胞。纤维蛋白被用作3D支架。 2周后,细胞形成像胰岛细胞的簇,并且通过化学发光测量胰岛素的分泌。通过免疫荧光检测PDX1,胰岛素原和c-肽作为β细胞的特殊标记物。通过实时荧光定量PCR和凝胶电泳检测胰高血糖素,PDX1和胰岛素基因在mRNA水平的表达。前者在3D文化中显示较高水平的基因表达。 SEM分析显示细胞和支架之间的良好完整性。通过MTT分析未检测到纤维蛋白支架的毒性。

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