中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (9): 1384-1389.doi: 10.3969/j.issn.2095-4344.2017.09.014

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

硫酸软骨素酶联合脂肪间充质干细胞治疗大鼠视网膜变性

楚  妙,巨朝娟,赵丽娜,崔增敏,宋  耕   

  1. 河北医科大学第一医院眼科,河北省石家庄市  050031
  • 出版日期:2017-03-28 发布日期:2017-03-31
  • 通讯作者: 巨朝娟,硕士,主治医师,河北医科大学第一医院眼科,河北省石家庄市 050031
  • 作者简介:楚妙,女,1981年生,河北省保定市人,2008年毕业于河北医科大学,硕士学历,主治医师,主要从事白内障,眼底病相关研究。
  • 基金资助:

    河北省医学科学研究课题计划项目(20130589)

Chondroitinase with adipose-derived mesenchymal stem cell transplantation: a therapeutic strategy for retinal degeneration in rats

Chu Miao, Ju Chao-juan, Zhao Li-na, Cui Zeng-min, Song Geng   

  1. Department of Ophthalmology, First Affiliated Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China
  • Online:2017-03-28 Published:2017-03-31
  • Contact: Ju Chao-juan, Master, Attending physician, Department of Ophthalmology, First Affiliated Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China
  • About author:Chu Miao, Master, Attending physician, Department of Ophthalmology, First Affiliated Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China
  • Supported by:

    the Medical Science Research Project of Hebei Province, No. 20130589

摘要:

文章快速阅读:

文题释义:
硫酸软骨素酶:
是共价连接在蛋白质上形成蛋白聚糖的一类糖胺聚糖。硫酸软骨素广泛分布于动物组织的细胞外基质和细胞表面,糖链由交替的葡萄糖醛酸和N-乙酰半乳糖胺(又称N-乙酰氨基半乳糖)二糖单位组成,通过一个似糖链接区连接到核心蛋白的丝氨酸残基上。硫酸软骨素存在于从线虫到人除植物外的所有生物中,发挥着许多重要的生理功能。硫酸软骨素的精细结构决定着功能的特异性和与多种蛋白质分子的相互作用。
脂肪间充质干细胞:是脂肪组织中一类多能性干细胞。由于脂肪组织来源广泛、取材容易、不涉及伦理问题、便于自体移植、给患者带来的痛苦较小,因此日益受到研究者的重视。目前,研究人员已成功地在体内、体外条件下,将其诱导分化形成脂肪、骨、软骨、肌肉等组织类型细胞。

 

摘要
背景:
有研究发现硫酸软骨素酶降解硫酸软骨素蛋白多糖能够促使视网膜上Müller细胞的移行,但硫酸软骨素酶降解硫酸软骨素蛋白多糖是否能促进脂肪间充质干细胞在视网膜变性大鼠视网膜的移行尚不明确。
目的:探讨硫酸软骨素酶降解硫酸软骨素蛋白多糖对脂肪间充质干细胞治疗大鼠视网膜变性的影响。
方法:分离并培养人脂肪间充质干细胞,建立视网膜变性大鼠模型,向视网膜变性大鼠视网膜下腔注射脂肪间充质干细胞+硫酸软骨素酶,观察移植后大鼠脂肪间充质干细胞迁移率和视网膜细胞凋亡情况。
结果与结论:人脂肪间充质干细胞能够成功培养,BrdU对人脂肪间充质干细胞的标记率达90.0%以上。建模后7 d,视网膜外核层塌陷,光感受器细胞大量外节迸解,外核层贴附在Bruch’s膜上,视网膜呈拱桥样,中央视网膜和外周视网膜均受到损伤;正常大鼠视网膜各层清晰,光感受器细胞排列规律,视网膜色素上皮层完整。脂肪间充质干细胞+硫酸软骨素酶组脂肪间充质干细胞迁移率高于脂肪间充质干细胞组,且2组视网膜细胞凋亡率比较差异无显著性意义。表明硫酸软骨素酶降解硫酸软骨素蛋白多糖可提高人脂肪间充质干细胞在视网膜上的迁移能力。

 

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: 0000-0003-0100-5367(巨朝娟)

关键词: 干细胞, 移植, 人脂肪间充质干细胞, 视网膜变性, 细胞移植, 硫酸软骨素酶, 硫酸软骨素蛋白多糖, 迁移, 凋亡

Abstract:

BACKGROUND: Studies have found that chondroitin sulfate proteoglycans degradation with chondroitinase can promote the migration of Müller cells on the retina, but whether it could promote the migration of adipose-derived mesenchymal stem cells in retinal degeneration rats is unclear.
OBJECTIVE: To investigate the effect of chondroitin sulfate proteoglycans degradation with chondroitinase on adipose-derived mesenchymal stem cell treatment for retinal degeneration in rats.
METHODS: Human adipose-derived mesenchymal stem cells were isolated and cultured. A retinal degeneration rat model was established followed by administration of adipose-derived mesenchymal stem cells+chondroitinase into the subretinal space. The migration of adipose-derived mesenchymal stem cells and retinal cell apoptosis in rats after transplantation were observed.
RESULTS AND CONCLUSION: The human adipose-derived mesenchymal stem cells could be successfully cultured. The labeling rate of BrdU to the human adipose-derived mesenchymal stem cells was more than 90.0%. At 7 days after modeling, the outer nuclear layer of the retina was collapsed, and a large amount of photoreceptor cells were dissected. The outer nuclear layer was attached to the Bruch’s membrane, and the retina was arched. The central retina and peripheral retina were damaged. In normal rats, the retinal layers were clear, and the photoreceptor cells arranged regularly; and the retinal pigment epithelium was complete. The migration rate of adipose-derived mesenchymal stem cells in adipose-derived mesenchymal stem cells+chondroitinase group was higher than that in adipose-derived mesenchymal stem cells group (P < 0.05). There was no significant difference in the apoptotic rate of retinal cells between the two groups (P > 0.05). These experimental findings show that chondroitin sulfate proteoglycans degradation with chondroitinase can enhance the migration ability of human adipose-derived mesenchymal stem cells on the retina.

 

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: Retinal Degeneration, Cell Movement, Tissue Engineering

中图分类号: