中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (19): 3474-3480.doi: 10.3969/j.issn.2095-4344.2013.19.009

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

人脐带间充质干细胞移植治疗初发1型糖尿病鼠

于文龙1,徐 薇1,于江苏1,王 丽2,高 宏2,王颜刚1,2   

  1. 1青岛大学医学院附属医院内分泌科,山东省青岛市  266003
    2青岛大学医学院附属医院干细胞中心,山东省青岛市  266003
  • 收稿日期:2012-10-11 修回日期:2013-03-22 出版日期:2013-05-07 发布日期:2013-05-07
  • 通讯作者: 王颜刚,博士,主任医师,博士生导师,青岛大学医学院附属医院内分泌科及干细胞中心,山东省青岛市 266003 wangyg1966@yahoo.com
  • 作者简介:于文龙★,男,1983年生,山东省高密市人,汉族,青岛大学医学院附属医院内分泌科硕士,现工作于南京医科大学附属常州二院内分泌科,主要从事干细胞治疗1型糖尿病的研究。 wenlongyuwenlong@126.com
  • 基金资助:

    青岛市应用基础科技计划项目(10-3-4-7-4-jch)

Human umbilical cord-derived mesenchymal stem cell transplantation for treatment for onset type 1 diabetes mellitus

Yu Wen-long1, Xu Wei1, Yu Jiang-su1, Wang Li2, Gao Hong2, Wang Yan-gang1, 2   

  1. 1 Department of Endocrinology, Affiliated Hospital of Qingdao University Medical College, Qingdao  266003, Shandong Province, China
    2 Chinese-American Research Center for Stem Cells, Affiliated Hospital of Qingdao University Medical College, Qingdao  266003, Shandong Province, China
  • Received:2012-10-11 Revised:2013-03-22 Online:2013-05-07 Published:2013-05-07
  • Contact: Wang Yan-gang, M.D., Chief physician, Doctoral supervisor, Department of Endocrinology, Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, Shandong Province, China; Chinese-American Research Center for Stem Cells, Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, Shandong Province, China wangyg1966@yahoo.com
  • About author:Yu Wen-long★, Master, Department of Endocrinology, Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, Shandong Province, China wenlongyuwenlong@126.com
  • Supported by:

     the Applied Basic Science and Technology Project of Qingdao City, No. 10-3-4-7-4-jch*

摘要:

背景:间充质干细胞具有自我复制、诱导免疫耐受和组织修复的特性,而1型糖尿病是以胰岛β细胞受损为主的自身免疫性疾病。鉴于此,考虑间充质干细胞可预防治疗1型糖尿病。
目的:观察脐带间充质干细胞对初发1型糖尿病鼠(NOD鼠)的治疗作用。
方法:选用1型糖尿病模型鼠(NOD小鼠),分为3组,正常对照组为未发病鼠,尾静脉注射生理盐水1 mL;发病后脐带间充质干细胞干预组尾静脉注射脐带间充质干细胞1 mL,1.0×106/只;发病后未用干细胞干预组尾静脉注射生理盐水1 mL。观察3个月,检测NOD鼠血糖、每天胰岛素使用剂量;流式细胞仪检测反应性CD4+、CD8+T细胞、CD4+CD25+调节性T细胞的数量及比例;ELISA法检测白细胞介素2、白细胞介素10、肿瘤坏死因子α水平;酶联免疫双抗体夹心法测定空腹和餐后2 h C肽水平;病理切片观察胰岛的形态,淋巴细胞浸润情况;免疫组化观察胰岛α和β细胞的数量和体积。
结果与结论:①与未用干细胞干预组比较,脐带间充质干细胞干预组免疫组化证实淋巴细胞浸润明显减少,胰岛α、β细胞结构更完整,α和β细胞数量明显上升且一致。②脐带间充质干细胞干预组CD4+T细胞数量、CD4+/CD8+T 细胞比值均低于未用干细胞干预组(P < 0.05),而脐带间充质干细胞干预组CD4+CD25+调节性T细胞数量明显高于未用干细胞干预组(P < 0.01)。③脐带间充质干细胞干预组肿瘤坏死因子α水平明显低于未用干细胞干预组,而白细胞介素10水平较未用干细胞干预组明显上升(P < 0.01)。④脐带间充质干细胞干预组血糖水平及胰岛素用量明显小于未用干细胞干预组,C肽水平较未用干细胞干预组升高(P < 0.05)。结果可见脐带间充质干细胞可降低初发1型糖尿病的血糖及胰岛素的用量,治疗1型糖尿病效果比较明显。

关键词: 干细胞, 干细胞移植, 1型糖尿病, 脐带间充质干细胞, NOD鼠, 胰岛细胞, 胰岛素用量, 调节性T细胞, 细胞因子, 其他基金, 干细胞图片文章

Abstract:

BACKGROUND: Mesenchymal stem cells have self-replicating, immune tolerance and tissue repair characteristics. Type 1 diabetes mellitus is an autoimmune disease mainly resulting from islet beta-cell damage. In view of this, mesenchymal stem cells can be considered to prevent and treat type 1 diabetes mellitus.
OBJECTIVE: To observe the effect of umbilical cord mesenchymal stem cell transplantation on the newly-onset type 1 diabetic mice (NOD mice).
METHODS: Type 1 diabetes model mice (NOD mice) were selected and divided into control group (Group A, mice without onset were injected with normal saline 1 mL into the tail vein), interventional group (Group B, onset mice were injected with 1 mL stem cells into the tail vein, 1 × 106 cells per mouse), and group without injection of umbilical cord mesenchymal stem cells after onset (Group C, onset mice were injected with normal saline 1 mL into the tail vein). Three months later, blood glucose and daily insulin dose were detected; the number and proportion of CD4+, CD8+T cells and CD4+CD25+ regulatory T cells were determined using a flow cytometry; levels of interleukin-2, interleukin-10 and tumor necrosis factor alpha were detected using enzyme linked immunosorbent assay; and fasting and 2-hour postprandial C-peptide levels were detected using enzyme-linked immunosorbent double antibody sandwich method. Islet morphology and lymphocyte infiltration were observed based on pathological sections. The number and size of the islet α and β cells were determined by using immunohistochemical method.
RESULTS AND CONCLUSION: (1) Compared with the group C, the immunohistochemical results confirmed that infiltration of lymphocytes in the group B was significantly reduced, the structure of islet α and β cells was more complete and the number of α and β cells was significantly increased and consistent. (2) Compared with the group C, the CD4+ T cell number and the rate of CD4+/CD8+ T cells in the group B were lower (P < 0.05), while the number of CD4+ CD25+ regulatory T cells in the group B was higher (P < 0.01). (3) Compared with the group C, the tumor necrosis factor-α level was significantly lower in the group B, but interleukin-10 level was increased in the group B (P < 0.01). (4) Compared with the group C, the group B had lower blood glucose level and insulin dose, but a higher C-peptide level (P < 0.05). It is indicated that umbilical cord-derived mesenchymal stem cells have a positive effect on the treatment of onset type 1 diabetes mellitus, which can reduce blood glucose level and insulin dose.

Key words: stem cells, stem cell transplantation, type 1 diabetes mellitus, umbilical cord-derived mesenchymal stem cell, NOD mice, islet cells, insulin dose, regulatory T cells, cytokines, other grants-supported paper, stem cell photographs-containing paper, stem cell photographs-containing paper

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