中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (5): 734-740.doi: 10.3969/j.issn.2095-4344.1587

• 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条件培养基脂质体修复大鼠皮肤创面损伤

刘美林1,傅松涛2,王培森3,郝 冉3,常冰梅1,侯秀英3   

  1. 1山西医科大学基础医学院生物化学与分子生物学教研室,山西省太原市 030001;2山西省生物医药健康研究生教育创新中心,山西省太原市 030001;3山西医科大学第一医院,山西省太原市 030001
  • 修回日期:2018-10-14 出版日期:2019-02-18 发布日期:2019-02-18
  • 通讯作者: 常冰梅,博士,副教授,山西医科大学基础医学院生物化学与分子生物学教研室,山西省太原市 030001; 侯秀英,硕士,主任医师,山西医科大学第一医院,山西省太原市 030001
  • 作者简介:刘美林,女,1990年生,山西省柳林县人,汉族,山西医科大学基础医学院生物化学与分子生物学专业在读硕士,主要从事干细胞研究。
  • 基金资助:

    山西省重点研发计划项目(201603D321080),项目负责人:侯秀英

Liposome prepared from human umbilical cord mesenchymal stem cell conditioned medium for repair of skin wound in rats

Liu Meilin1, Fu Songtao2, Wang Peisen3, Hao Ran3, Chang Bingmei1, Hou Xiuying3   

  1. 1Department of Biochemistry and Molecular Biology, School of Basic Medicine, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China; 2Shanxi Biomedical Health Graduate Education Innovation Center, Taiyuan 030001, Shanxi Province, China; 3First Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • Revised:2018-10-14 Online:2019-02-18 Published:2019-02-18
  • Contact: Chang Bingmei, MD, Associate professor, Department of Biochemistry and Molecular Biology, School of Basic Medicine, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China; Hou Xiuying, Master, Chief physician, First Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • About author:Liu Meilin, Master candidate, Department of Biochemistry and Molecular Biology, School of Basic Medicine, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • Supported by:

    the Major Research and Development Plan of Shanxi Province, No. 201603D321080 (to HXY)

摘要:

文章快速阅读:

 

文题释义:
条件培养基:
培养过细胞的培养基去除细胞后的上清液,里面含有如血管内皮生长因子、白细胞介素8、单核细胞趋化蛋白1等细胞分泌因子,其有助于伤口的修复。
脂质体:是一种人工膜,当两性分子如磷脂分散于水相时,分子的疏水尾部倾向于聚集在一起,避开水相,而亲水头部暴露在水相,形成具有双分子层结构的封闭囊泡可包封药物于腔内而形成的微型泡囊体,改变药物的渗透和缓释作用。

 

摘要
背景:
干细胞条件培养基中含有大量有助于伤口修复的细胞分泌因子,用脂质体包裹有助于细胞因子在伤口处的缓释作用。
目的:研究人脐带间充质干细胞条件培养基脂质体对大鼠皮肤创面愈合的影响。
方法:采用组织块贴壁法分离培养人脐带间充质干细胞并进行相关因子检测。取20只SD大鼠(购自山西医科大学实验动物中心)用于制备直径1 cm的皮肤创面模型。薄膜分散制备条件培养基脂质体囊泡用于大鼠皮肤缺损伤口,取修复部位皮肤及周围组织进行苏木精-伊红染色病理切片观察,通过组织学评分统计分析判断其对创伤的修复情况。
结果与结论:①人脐带间充质干细胞表面标志物CD73、CD90、CD105阳性率分别为99.7%、95.7%、99.4%,CD45、CD34阳性率分别为1.1%、0.1%,且能诱导分化为骨细胞、脂肪细胞;②条件培养基中血管内皮生长因子、白细胞介素8、单核细胞趋化蛋白1的质量浓度分别为558.60 ng/L、5 236.48 ng/L、2 972.55 ng/L;③用薄膜分散法制备得到人脐带间充质干细胞条件培养基脂质体平均粒径为262.3 nm;④人脐带间充质干细胞条件培养及其脂质体均可促进大鼠皮肤缺损处的毛囊、腺体发生,且表皮层加厚,组织学评分显著升高,第2天的条件培养基与条件培养基脂质体差异无显著性意义(P=0.730),其他各组之间有显著差异(P < 0.05);⑤结果提示,人脐带间充质干细胞条件培养基及其脂质体可以促进大鼠缺损伤口的修复。


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: 0000-0002-6203-1801(刘美林)

关键词: 人脐带间充质干细胞, 创面损伤, 伤口愈合, 条件培养基, 细胞因子, 脂质体

Abstract:

BACKGROUND: The stem cell conditioned medium contains a large number of cell secretory factors contributing to wound repair. Liposome encapsulation facilitates the sustained release of cytokines at the wound site. 
OBJECTIVE: To study the effect of liposomes prepared from the conditioned medium of human umbilical cord mesenchymal stem cells on the healing of skin wounds in rats. 
METHODS: Human umbilical cord mesenchymal stem cells were isolated and cultured by tissue explant method, and cytokine detection was then performed. Twenty Sprague-Dawley rats were provided by the Experimental Animal Center of Shanxi Medical University in China to make skin wound models of 1 cm in diameter. Membrane dispersion technique was used to prepare the conditioned medium liposomal vesicles used for skin wounds in the rats. The skin and surrounding tissues of the repair site were taken for hematoxylin-eosin staining. The histological scores were used to judge the repair of wounds. 
RESULTS AND CONCLUSION: (1) The human umbilical cord mesenchymal stem cells were positive for CD73 (99.7%), CD90 (95.7%), CD105 (99.4%), CD45 (1.1%) and CD34 (0.1%). The cells could be induced to differentiate into osteocytes and adipocytes. (2) The concentrations of vascular endothelial growth factor, interleukin-8, and monocyte chemotactic protein 1 in the conditioned medium were 558.60 ng/L, 5 236.48 ng/L, and 2 972.55 ng/L, respectively. (3) The average particle size of liposome in the conditioned medium prepared by membrane dispersion method was 262.3 nm. Conditional culture of human umbilical cord mesenchymal stem cells and its liposome could increase the hair follicles and glands at the site of rat skin defects, the epidermis was thickened, and the histological score was markedly increased. There was no difference between the conditioned medium and conditioned medium liposome groups at 2 days of culture (P=0.730), but significant differences existed among the other groups (P < 0.05). To conclude, the human umbilical cord mesenchymal stem cell conditioned medium and its liposomes can promote the repair of skin defects in rats.


 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, Cell Culture Techniques, Liposomes, Tissue Engineering

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