中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (29): 4703-4708.doi: 10.3969/j.issn.2095-4344.2017.29.019

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

人脐带间充质干细胞诱导分化不同阶段的胰岛样细胞移植治疗糖尿病

山 霞1,崔晓兰2,时 瀚1,申 义1,王 嘉1,张社毅1,郭 波1,王意忠1   

  1. 1北京大学航天临床医学院血液内分泌科,北京市 100049;2中国中医科学院中药研究所药理室,北京市 100700
  • 修回日期:2017-05-09 出版日期:2017-10-18 发布日期:2017-11-08
  • 通讯作者: 王意忠,博士,主任医师,北京大学航天临床医学院血液内分泌科,北京市 100049
  • 作者简介:山霞,女,1989 年生,山东省日照市人,汉族,北京大学医学部在读硕士,主要从事干细胞治疗糖尿病的基础研究。
  • 基金资助:

    北京大学航天临床医学院科研基金资助项目(201302)

Transplantation of islet-like cells from human umbilical cord mesenchymal stem cells at different induced stages for the treatment of diabetic mellitus

Shan Xia1, Cui Xiao-lan2, Shi Han1, Shen Yi1, Wang Jia1, Zhang She-yi1, Guo Bo1, Wang Yi-zhong1   

  1. 1Department of Hematology and Endocrinology, Peking University Aerospace School of Clinical Medicine, Beijing 100049, China; 2Pharmacology Laboratory, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
  • Revised:2017-05-09 Online:2017-10-18 Published:2017-11-08
  • Contact: Wang Yi-zhong, M.D., Chief physician, Department of Hematology and Endocrinology, Peking University Aerospace School of Clinical Medicine, Beijing 100049, China
  • About author:Shan Xia, Studying for master’s degree, Department of Hematology and Endocrinology, Peking University Aerospace School of Clinical Medicine, Beijing 100049, China
  • Supported by:

    the Scientific Research Fund of the Aerospace Clinical Medical College of Peking University, No. 201302

摘要:

文章快速阅读:

文题释义:
胰岛B细胞:
是胰岛细胞的一种,属内分泌细胞,约占胰岛细胞总数的70%,主要位于胰岛中央部,能分泌胰岛素,起调节血糖含量的作用。胰岛B细胞功能受损,胰岛素分泌绝对或相对不足,从而引发糖尿病。
胰岛素:是由胰腺内的胰岛β细胞受内源性或外源性物质如葡萄糖、乳糖、核糖、精氨酸、胰高血糖素等刺激而分泌的一种蛋白质激素。胰岛素是体内惟一降低血糖的激素,同时促进糖原、脂肪、蛋白质合成。脐带间充质干细胞在一定条件下能够诱导为胰岛样细胞,分泌胰岛素,移植后产生降糖作用。

 

摘要
背景:
实验室前期已对人脐带间充质干细胞进行不同时期的体外定向诱导,使其成功分化为胰岛样细胞,并检测到胰岛素表达。
目的:观察人脐带间充质干细胞诱导分化不同阶段的胰岛样细胞在糖尿病大鼠模型体内的治疗效果,探索体外诱导的最佳时长。
方法:将第3代人脐带间充质干细胞在体外定向诱导7,14,21,28 d使其分化为胰岛样细胞。选用清洁级健康Wistar大鼠80只,取8只做正常对照组,其余72只造模成功后,随机分为6组,分别为模型对照组、未诱导组、诱导7 d组、诱导14 d组、诱导21 d组、诱导28 d组。造模10 d后,分别经尾静脉移植相应的细胞悬液2 mL/只(细胞数量2×106个)。正常对照组和模型对照组经尾静脉注射不含任何细胞的培养液2 mL/只。每2周移植1次,共移植2次。治疗过程中检测各组大鼠的血糖、体质量、血清胰岛素水平,第2次细胞移植4周后处死大鼠,观察各脏器组织病理变化。
结果与结论:①与模型对照组相比,各治疗组体质量上升,血糖下降,胰岛素水平升高,差异有显著性意义(P < 0.05),且诱导28 d组治疗效果最佳;②各治疗组病理切片显示,肝脏和肾脏组织结构清晰,未发生坏死、纤维化等异常改变;③实验结果表明,人脐带间充质干细胞诱导不同阶段的胰岛样细胞移植治疗糖尿病安全有效,体外诱导28 d的胰岛样细胞治疗效果最为显著。

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID:
0000-0002-3419-4566(王意忠)

关键词: 干细胞, 移植, 人脐带间充质干细胞, 诱导分化, 糖尿病, 胰岛样细胞, 胰岛素

Abstract:

BACKGROUND: In previous studies, the human umbilical cord mesenchymal stem cells (hUC-MSCs) have been successfully differentiated into islet-like cells in vitro, and insulin expressions have been found.
OBJECTIVE: To compare the therapeutic effects of different induced stages of islet-like cells differentiated from hUC-MSCs in a diabetic rat in vivo, so as to find the most suitable induced time in vitro and provide a theoretical basis for clinical treatment of diabetes mellitus.
METHODS: Passage 3 hUC-MSCs were differentiated into islet-like cells after 7, 14, 21, 28 days of oriented induction. Eighty male healthy Wistar rats, clean grade, were used in the study. Except eight rats in normal control group, all the rats were injected with streptozotocin at a dose of 70 mg/kg to establish diabetic models. The rats at 10 days after successful modeling were randomly divided into model control group, non-induced group, 7-day induction group, 14-day induction group, 21-day induction group and 28-day induction group. Rats in the normal control group and model control group were given 2 mL of culture medium without any cells and rats in the other groups were implanted with corresponding cell suspension (2×106 cells) via tail vein for two sessions with an interval of 2 weeks. The blood glucose level, body mass and serum insulin level were detected during the treatment process. The rats were executed to observe the structure changes of each organ at 4 weeks after the second cell transplantation.
RESULTS AND CONCLUSION: (1) Compared with the model control group, the body mass and the serum insulin level significantly increased and the blood glucose levels significantly decreased in all the transplantation groups (P < 0.05), and the therapeutic effect was best in the 28-day induction group. (2) Compared with the model control group and normal control group, the frozen sections in all the transplantation groups showed that the morphological structures of the liver and kidney were clear with no abnormal changes, such as necrosis and fibrosis, after transplantation. These experimental results show that it is relatively safe and effective to transplant the different induced stages of islet-like cells induced by hUC-MSCs in the treatment of diabetes mellitus, and the therapeutic effect of islet-like cells at 28 days of in vitro induction is most obvious.

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Diabetes Mellitus, Umbilical Cord, Mesenchymal Stem Cells, Cell Differentiation, Insulin-Secreting Cells, Tissue Engineering

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