中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (13): 2062-2067.doi: 10.3969/j.issn.2095-4344.2017.13.016

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

PDX-1基因转染人脂肪间充质干细胞向胰岛样细胞分化及移植治疗1型糖尿病

史光军1,白国立2,谭雪莹1,朱继军2,许  评1   

  1. 1青岛市市立医院肝胆外科,山东省青岛市  266000;2青岛大学医学院,山东省青岛市 266000
  • 修回日期:2016-12-11 出版日期:2017-05-08 发布日期:2017-06-09
  • 通讯作者: 许评,主任医师,教授,博士后导师,青岛市市立医院肝胆外科,山东省青岛市 266000
  • 作者简介:史光军,男,1966年生,山东省潍坊市人,汉族,2005年华中科技大学同济医学院毕业,博士,主任医师,硕士生导师,主要从事肝胆胰脾疾病与干细胞的研究。
  • 基金资助:

    山东省医药卫生科技发展计划(2014WS0217)

PDX-1 transfected human adipose-derived mesenchymal stem cells: differentiation into islet-like cells and treatment of type 1 diabetes via cell transplantation

Shi Guang-jun1, Bai Guo-li2, Tan Xue-ying1, Zhu Ji-jun2, Xu Ping1   

  1. 1Department of Hepatobiliary Surgery, Qingdao Municipal Hospital, Qingdao 266000, Shandong Province, China; 2Qingdao University Medical College, Qingdao 266000, Shandong Province, China
  • Revised:2016-12-11 Online:2017-05-08 Published:2017-06-09
  • Contact: Xu Ping, Chief physician, Professor, Department of Hepatobiliary Surgery, Qingdao Municipal Hospital, Qingdao 266000, Shandong Province, China
  • About author:Shi Guang-jun, M.D., Chief physician, Master’s supervisor, Department of Hepatobiliary Surgery, Qingdao Municipal Hospital, Qingdao 266000, Shandong Province, China
  • Supported by:

    the Medicine & Health Development Plan of Shandong Province, No. 2014WS0217

摘要:

文章快速阅读:

文题释义:
胰十二指肠同源盒基因1:
为一种在胰腺发育中起重要作用的特异性转录因子,对于胰腺的早期发育及晚期的增生分化均发挥着重要作用,并且对维持胰腺β细胞的功能也有重要作用。
腺病毒(Adenovirus,Ad):是一种无包膜的线状双链 DNA 病毒,其复制不依赖于宿主细胞的分裂。腺病毒拥有近 50 个血清型,大多数腺病毒载体都是基于血清型2和血清型5,通过转基因的方式取代E1和E3基因,降低病毒的复制能力。这些重组病毒仅在高水平表达E1和E3基因的细胞中复制,因此是一种适用于治疗的高效控制系统。重组腺病毒是进行基因转移和表达的工具,功能强大并易于操作。

 

摘要
背景:
近年研究发现脂肪间充质干细胞不仅具有多向分化潜能,在血糖平衡及激素产生方面也具有重要作用。
目的:观察PDX-1基因转染脂肪间充质干细胞向胰岛样细胞的分化能力及移植后对糖尿病大鼠的治疗效果。
方法:采用腺病毒转染方法将PDX-1基因转入人脂肪间充质干细胞,双硫腙染色鉴定细胞分化情况,ELISA法检测细胞胰岛素分泌水平。从20只雄性SD大鼠中随机取4只作为对照组,注射生理盐水,其余16只按65 mg/kg 的剂量注射链脲霉素建立糖尿病模型,再随机等分为移植组和糖尿病组,移植组大鼠尾静脉注射PDX-1基因转染脂肪间充质干细胞。
结果与结论:①转染后15 d,转染组胰岛素阳性细胞数量、胰岛素分泌量均高于未转染组(P < 0.05);②移植组大鼠空腹血糖水平显著下降(P < 0.05),体质量明显增加(P < 0.05),而糖尿病大鼠空腹血糖维持在较高水平,且体质量显著下降;③结果提示,导入PDX-1基因对人脂肪间充质干细胞分化为胰岛样细胞具有促进作用,PDX-1转染脂肪间充质干细胞移植能有效治疗大鼠糖尿病,但具体机制尚待进一步研究。

 

 

关键词: 干细胞, 移植, 脂肪间充质干细胞, 胰十二指肠同源盒基因1, 腺病毒, 基因转染, 胰岛样细胞, 糖尿病, 血糖, 体质量

Abstract:

BACKGROUND: Recent studies have shown that adipose-derived mesenchymal stem cells (ADMSCs) not 
only have multilineage differentiation potential, but also exert an important role in blood sugar balance and hormone production.
OBJECTIVE: To observe the differentiation potential of human ADMSCs (hADMSCs) into functional islet-like cells and the therapeutic effect of hADMSCs transplantation in diabetic rats.
METHODS: PDX-1 gene was transfected into hADMSCs by adenovirus. Cell differentiation and insulin secretion were identified and detected by dithizone staining and ELISA, respectively. Twenty male Sprague-Dawley rats were randomly divided into control group (n=4), diabetes group (n=8) and transplantation group (n=8). Rats in the latter two groups were subjected to making diabetic models by 65 mg/kg streptozotocin injection. Afterwards, rats in the transplantation group were given PDX-1 transfected ADMSCs via the tail vein.
RESULTS AND CONCLUSION: At 15 days after transfection, the number of insulin positive cells and insulin secretion were both increased significantly (P < 0.05). Fasting glucose levels in the transplantation group decreased significantly (P < 0.05), while the body weight increased significantly (P < 0.05). In the diabetic group, the fasting glucose level still maintained at a high level, and the body weight of rats was significantly decreased. These results implicated that PDX-1 gene could induce hADMSCs differentiating into functional islet-like cells. PDX-1 transfected ADMSCs transplantation is effective in treating diabetic rats, but the mechanism needs further study.

 

 

Key words: Adipose Tissue, Mesenchymal Stem Cell Transplantation, Genes, Homeobox, Diabetes Mellitus, Tissue Engineering

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