中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (13): 2016-2021.doi: 10.3969/j.issn.2095-4344.1676

• 脐带脐血干细胞 umbilical cord blood stem cells • 上一篇    下一篇

人脐带间充质干细胞联合免疫干预治疗1型糖尿病小鼠的实验研究

郭 波1,刘 佳1,崔晓兰2,时 瀚1,张社毅1,王 嘉1,山 霞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:2018-12-24 出版日期:2019-05-08 发布日期:2019-05-08
  • 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:郭波,男,1989年生,河南省安阳市人,汉族,2019年北京大学毕业,在读硕士,主要从事干细胞基础与临床应用方面的研究。
  • 基金资助:

    北京大学航天临床医学院科研基金资助项目(YN201806),课题名称:间充质干细胞联合免疫佐剂治疗1型糖尿病鼠的研究,项目负责人:王意忠

Human umbilical cord mesenchymal stem cells combined with immunotherapy for the treatment of type 1 diabetic mice

Guo Bo1, Liu Jia1, Cui Xiaolan2, Shi Han1, Zhang Sheyi1, Wang Jia1, Shan Xia1, Wang Yizhong1   

  1. 1Department of Hematology and Endocrinology, Aerospace Clinical Medical College of Peking University, Beijing 100049, China; 2Pharmacology Laboratory, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
  • Revised:2018-12-24 Online:2019-05-08 Published:2019-05-08
  • Contact: Wang Yizhong, MD, Chief physician, Department of Hematology and Endocrinology, Aerospace Clinical Medical College of Peking University, Beijing 100049, China
  • About author:Guo Bo, Master candidate, Department of Hematology and Endocrinology, Aerospace Clinical Medical College of Peking University, Beijing 100049, China
  • Supported by:

    the Scientific Research Fund Project of the Aerospace Clinical Medical College of Peking University, No. YN201806 (to WYZ)

摘要:

文章快速阅读:

文题释义:
免疫干预:
通过免疫制剂、生物制剂、免疫细胞等外在方法,改变或者修正,正常或者异常的机体免疫应答,也包括改变或者修正免疫调节的进程,从而实现疾病的预防及治疗的目的。在此次实验中指的是“皮下注射地塞米松(注射液)+胰岛素(注射液)”。
BALB/c Foxp3-DTR-EGFP小鼠:是一种靶向敲除“调节性T细胞”的转基因小鼠,特点是在内源性Foxp3(叉状头转录调控因子)的调控下,调节性T细胞表达白喉毒素受体(DTR)。因此,当白喉毒素(DT)打入小鼠体内,白喉毒素与白喉毒素受体结合,实现靶向敲除“调节性T细胞”的目的。

 

摘要
背景:
1型糖尿病是一种以T细胞介导的胰岛β细胞损伤为特征的自身免疫性疾病,实验拟针对其免疫机制进行干预,并用干细胞修复受损的胰岛β细胞,探索治疗1型糖尿病的新方法。
目的:观察人脐带间充质干细胞联合免疫干预治疗1型糖尿病小鼠的疗效。  
方法:取BALB/c Foxp3-DTR-EGFP阳性小鼠50只,随机选择6只作为正常对照组,剩余小鼠通过腹腔注射链脲佐菌素及白喉毒素制备1型糖尿病模型,造模成功后,随机分为4组:模型组给予等量生理盐水;免疫干预组皮下注射地塞米松(10 μg)+胰岛素(10 μg)混合液;人脐带间充质干细胞组经尾静脉移植人脐带间充质干细胞1×106/只;联合治疗组采用以上两种治疗方法。治疗后4周,观察各组小鼠血糖、C肽及体质量变化,胰腺组织病理及胰岛素染色阳性面积。
结果与结论:①与正常对照组对比,模型组血糖升高(P < 0.01), C肽及体质量均下降(P < 0.01),胰岛严重萎缩,胰岛细胞减少,胰岛素染色阳性面积减小;②与模型组对比,免疫干预组血糖有所下降但差异不显著(P > 0.05),C肽及体质量改变不显著(P > 0.05),胰岛细胞增多,胰岛素阳性面积增大;③与模型组对比,人脐带间充质干细胞组及联合治疗组血糖降低,但差异不显著(P > 0.05),C肽及体质量均升高(P < 0.05),胰岛细胞增多,胰岛素染色阳性面积增大;④结果表明,人脐带间充质干细胞、免疫干预均能改善1型糖尿病小鼠的胰岛功能,联合治疗效果更佳。


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: 人脐带间充质干细胞, 1型糖尿病, 免疫干预, 胰岛素, 地塞米松, 自身免疫疾病, BALB/c Foxp3-DTR-EGFP阳性小鼠, C肽

Abstract:

BACKGROUND: Type 1 diabetes mellitus is a T cell-mediated autoimmune disease resulting in pancreatic islet cell damage. In this study, immunotherapy was used to deal with type 1 diabetes mellitus and stem cell transplantation was used to repair damaged islet β cells, attempting to explore a new treatment for type 1 diabetes mellitus.
OBJECTIVE: To observe the efficacy of human umbilical cord mesenchymal stem cells combined with immunotherapy for the treatment of type 1 diabetic mice.
METHODS: Fifty BALB/c Foxp3-DTR-EGFP positive mice were selected, six of which were randomly selected as normal control group and the remaining of which were intraperitoneally injected with streptozotocin and diphtheria toxin to prepare an animal model of type 1 diabetes mellitus. After successful modeling, randomization was performed in model mice and there were four groups: model group (normal saline), immunotherapy group (subcutaneous injection of dexamethasone (10 μg) and insulin (10 μg) mixture), cell transplantation group (injection of human umbilical cord mesenchymal stem cells (1×106 cells per mouse) through the tail vein, and combined treatment group (the combination of immunotherapy and cell transplantation as described above). At 4 weeks after treatment, changes in blood glucose, C-peptide, body mass, pancreatic histopathology and insulin-positive area were observed in each group.
RESULTS AND CONCLUSION: (1) Compared with the normal control group, the blood glucose level of the model group increased (P < 0.01), the C peptide level and body mass decreased (P < 0.01), and the islet was severely atrophied, with decreased number of islet cells and reduced insulin-positive area. (2) Compared with the model group, the blood glucose level of the immunotherapy group decreased (P > 0.05), the C-peptide level and body mass did not change significantly (P > 0.05), the islet cells increased in number, and the insulin-positive area increased. (3) Compared with the model group, the blood glucose level of the cell transplantation group and the combined treatment group decreased (P > 0.05), the C peptide level and body mass increased (P < 0.05), the islet cells increased in number, and the insulin-positive area increased. These findings reveal that either human umbilical cord mesenchymal stem cells or immunotherapy can improve the islet function of type 1 diabetic mice, and the combination treatment has better outcomes.


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, Type 1, Mesenchymal stem cell Transplantation, Immunotherapy, Stem Cells

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