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骨髓间充质干细胞体外诱导分化为胰岛样细胞及其对坏死胰腺组织的修复

刘雅娟1,李秀东1,陈 强1,凌 翎1,刘丽珠2,范洪学1*   

  1. 1. 吉林大学公共卫生学院营养与食品卫生学教研室,吉林 长春 130021;2. 吉林大学第二医院放疗科,吉林 长春130041
  • 收稿日期:2005-06-07 修回日期:1900-01-01 出版日期:2005-11-28 发布日期:2005-11-28
  • 通讯作者: 范洪学

Induction of mesenchymal stem cells into islet-like cellsin vitro and its repair on injured pancreas tissues

LIU Ya-juan1,LI Xiu-dong1,CHEN Qiang1, LING Ling1,LIU Li-zhu2, FAN Hong-xue1*   

  1. 1. Department of Nutrition and Food Hygiene,Shool of Public Health,Jilin University, Changchun 130021,China;2. Department of Radiation Therapy, Second Hospital, Jilin University, Changchun 130041,China
  • Received:2005-06-07 Revised:1900-01-01 Online:2005-11-28 Published:2005-11-28
  • Contact: FAN Hong-xue

摘要: 目的:探讨骨髓间充质干细胞(MSC)体外诱导转化为胰岛样细胞及其对坏死胰腺组织修复的可能性。 方法:①取大鼠骨髓细胞,进行MSC培养纯化扩增,用bFGF、EGF、条件培养液、高糖培养基、B27、地塞米松、胰岛素等培养体系诱导MSC向胰岛细胞转化;双硫腙染色鉴定胰岛样细胞。②结扎大鼠胰腺组织及其血管6~7 h制作胰腺局部坏死模型。将分离、纯化、诱导的MSC和骨髓细胞用DAPI标记,分别移植到实验组(移植MSC)和对照组(移植骨髓单个核细胞)。观察大鼠生存状态并于2周后取胰腺组织检测。结果:①体外扩增的MSC诱导转化后,细胞由初期的长梭形变成多角形或圆形并逐渐聚集成团。双硫腙染色大部分细胞团呈亮红色,初步表明MSC可诱导转化为胰岛样细胞。②实验组大鼠成活率达80%,坏死的胰腺组织被修复,变黑的胰腺组织基本恢复正常,胰腺组织中存在核呈兰色荧光的细胞;对照组的动物腹腔积水、粘连,2周内全部死亡。结论:大鼠骨髓MSC可在体外诱导转化为胰岛样细胞,并可修复损伤的胰腺组织。

关键词: 中胚层, 胰腺, 造血干细胞, 移植

Abstract: Objective To study the induction of islet-like cell from bone marrow mesenchymal stem cells (MSCs) in vitro and its repair effects on injury pancreas tissues.Methods ①MSCs were cultivated and expanded in vitro and in duced with cell factors like bFGF, EGF, high glucose DMEM media into islet-like cells. The induced cells were identified by dithizon staining. ②MSCs and bone marrow cells were marked with DAPI and implanted into experimental group (MSCs implantation) and control group (bone marrow mononuclear leukocyte implantation) . The survival rate and morphological changes were observed two weeks after implantation. Results ①After the amplified MSCs were induced in vitro,their forms changed from long spinde-shape to polygon or round and attached each other. Dithizon staining showed bright red color for most of induced cells. It indicated MSCs could be induced into islet-like cell s. ②The survival rate of the experimental group was 80%. The injured pancreas tissues were repaired.Blue fluorescent was observed in repaired pancreas tissues. The animals in control group all died during two weeks. Conclusion MSCs can be induced into islet-like cells in vitro and repair the injured pancreas.

Key words: mesoderm, pancrease, hemato poietic stem cell transplantation

中图分类号: 

  • Q813