中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (1): 77-81.doi: 10.3969/j.issn.2095-4344.2017.01.014

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

脂肪间充质干细胞注入退变椎间盘局部的作用

沈  祥1,徐宏光1,马明明1,张  骞1,肖  良1,所起凤2   

  1. 皖南医学院第一附属医院弋矶山医院,1脊柱骨科,2中心实验室,安徽省芜湖市  241001
  • 出版日期:2017-01-08 发布日期:2017-03-15
  • 通讯作者: 徐宏光,教授,主任医师,皖南医学院第一附属医院弋矶山医院脊柱骨科,安徽省芜湖市 241001
  • 作者简介:沈祥,男,1989年生,安徽省芜湖市人,硕士,主要从事脊柱骨科学研究。
  • 基金资助:

    国家自然科学基金(81272048)

Local effects of adipose-derived mesenchymal stem cells injected into the degenerative intervertebral discs

Shen Xiang1, Xu Hong-guang1, Ma Ming-ming1, Zhang Qian1, Xiao Liang1, Suo Qi-feng2   

  1. 1Department of Spinal Surgery, 2Central Laboratory, First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui Province, China
  • Online:2017-01-08 Published:2017-03-15
  • Contact: Xu Hong-guang, Professor, Chief physician, Department of Spinal Surgery, First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui Province, China
  • About author:Shen Xiang, Master, Department of Spinal Surgery, First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81272048

摘要:

文章快速阅读:

文题释义:
干细胞移植治疗椎间盘退变:
干细胞移植在作为新方法用于椎间盘退变治疗的研究越来越受到临床及科研人员的关注。干细胞作为原始细胞,具有很强的自我更新及潜在分化能力。国内外研究发现,移植干细胞可增加肌细胞数量。近年来研究发现,间充质干细胞具有可增殖,多向分化的能力且可自我更新,在特定条件下可分化为骨细胞等多种细胞,对受损的骨或软骨组织具有一定的修复功能。

 

摘要
背景:
国内研究证实,脂肪间充质干细胞在一定条件下可分化为软骨细胞、成骨细胞等多种类型骨细胞,修复受损的骨或软骨组织。
目的:观察脂肪间充质干细胞对兔椎间盘退变的作用。
方法:将36只成年新西兰大白兔随机分为3组,正常组不进行任何处理,对照组、实验组采用髓核穿刺抽吸法建立兔椎间盘退变模型,造模14 d后,实验组于椎间盘内注射BrdU标记的同种异体脂肪间充质干细胞悬液50 μL(细胞浓度1×109 L-1),对照组于椎间盘内注射等量的生理盐水。注射后2,4,8周,进行椎间盘放射学MRI检查、苏木精-伊红和免疫组织化学染色。
结果与结论:①MRI检查:正常组椎间盘高度恒定,T2加权相上椎间盘信号清晰、均一;对照组注射第4周开始出现椎间隙变窄,T2加权相信号减弱,随着时间推移,椎间盘间隙逐渐狭窄,T2加权相信号也越来越低;实验组注射后第4周椎间隙高度和T2加权相信号逐渐增强;②苏木精-伊红染色:与正常组比较,对照组注射后2周出现椎间盘退变表现,并随时间的延长逐渐加重;实验组注射后不同时间点的椎间盘退变表现较对照组明显减轻;③免疫组织化学染色:移植后的BrdU标记脂肪间充质干细胞可在兔椎间盘内存活并增殖;④结果表明:脂肪间充质干细胞对兔椎间盘退变有修复作用。

 

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:
0000-0002-2304-3930(徐宏光)

关键词: 干细胞, 移植, 脂肪间充质干细胞, 分离, 体外培养, 干细胞移植, 动物模型, 兔, 椎间盘退变, 修复, 国家自然科学基金

Abstract:

BACKGROUND: Domestic studies have shown that adipose-derived mesenchymal stem cells can differentiate into osteoblasts, osteoblasts and other types of bone cells under certain conditions, which are used to repair damaged bone or cartilage tissue.
OBJECTIVE: To observe the effect of adipose-derived mesenchymal stem cells on rabbit intervertebral disk degeneration.
METHODS: Thirty-six adult New Zealand rabbits were randomized into normal (no treatment), control and experimental groups. Rabbit models of intervertebral disk degeneration were made in the latter two groups using nucleus pulposus aspiration method. Fourteen days after modeling, model rabbits were given injection of BrdU-labeled allogeneic adipose-derived mesenchymal stem cell suspension (50 μL, 1×109/L) in the experimental group or same volume of normal saline in the control group. Thereafter, MRI, hematoxylin-eosin staining and immunohistochemical staining were performed at 2, 4, 8 weeks after injection.
RESULTS AND CONCLUSION: MRI findings showed: unchanged disc height and clear and uniform T2-weighted intervertebral disk signals in the normal group; narrowed intervertebral space and weakened T2-weighted signals in the control group that occurred at 4 weeks and gradually developed with time; and increased disc height and T2-weighted signals in the experimental group. Intervertebral disk degeneration shown by hematoxylin-eosin staining occurred at 2 weeks after injection and aggravated in the control group, but in the experimental group, the degeneration was alleviated significantly compared with the control group. Additionally, the transplanted BrdU-labeled adipose-derived mesenchymal stem cells survived and proliferated in the rabbit intervertebral discs. To conclude, adipose-derived mesenchymal stem cells contribute to the recovery from intervertebral disk degeneration.

 

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: Mesenchymal Stem Cell Transplantation, Intervertebral Disk Degeneration, Tissue Engineering

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