中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (38): 5730-5736.doi: 10.3969/j.issn.2095-4344.2016.38.016

• 细胞外基质材料 extracellular matrix materials • 上一篇    下一篇

注射型猪小肠黏膜下层与脂肪间充质干细胞的体外共培养

郭  杏1,周  虹1,李  丹1,高小春1,代  蕾1,黄海俊1,谭美云2
  

  1. 西南医科大学附属医院,1整形烧伤科,2骨与关节外科,四川省泸州市  646000
  • 收稿日期:2016-08-19 出版日期:2016-09-16 发布日期:2016-09-16
  • 通讯作者: 谭美云,副教授,西南医科大学附属医院骨与关节外科,四川省泸州市 646000
  • 作者简介:郭杏,女,1977年生,四川省宜宾市人,汉族,2006年西南医科大学毕业,硕士,副主任医师,主要从事干细胞与组织工程研究。
  • 基金资助:
    国家自然科学基金项目(31271049)

Injectable small intestinal submucosa is co-cultured with adipose-derived mesenchymal stem cells in vitro

Guo Xing1, Zhou Hong1, Li Dan1, Gao Xiao-chun1, Dai Lei1, Huang Hai-jun1, Tan Mei-yun2
  

  1. 1Department of Plastic and Burn Surgery, 2Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2016-08-19 Online:2016-09-16 Published:2016-09-16
  • Contact: Tan Mei-yun, Associate professor, Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Guo Xing, Master, Associate chief physician, Department of Plastic and Burn Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 31271049

摘要:

文章快速阅读:

 

文题释义:
猪小肠黏膜下层
:是近年来利用物理和化学的方法处理而获取的脱细胞天然细胞外基质。它可为细胞贴附生长提供一个良好的微环境,因为它经脱细胞处理后仍保留有纤维粘连蛋白、糖胺聚糖、生长因子等,而纤维粘连蛋白和糖胺聚糖在细胞与细胞和细胞与细胞外基质黏附中产生积极的影响,而生长因子如血管内皮生长因子、碱性成纤维细胞生长因子、转化生长因子β、肿瘤坏死因子α,能够促进细胞的增殖和组织的生长。
脂肪间充质干细胞:首先由Zuk等在2001年研究发现,具有很强的增殖与自我更新能力,其不但取材便捷、来源广泛、不易老化、体外扩增迅速,而且能分泌各种生长因子,如碱性成纤维细胞生长因子、角化细胞生长因子、转化生长因子β1、肝细胞生长因子等,在组织工程中可成为优势种子细胞。

背景:经脱细胞处理的猪小肠黏膜下层是一种具有生物活性的细胞外基质,主要由胶原、糖蛋白、蛋白多糖等组成,富含胶原、氨基葡聚糖和各种生长因子,这些组分在促进组织细胞的分化和快速增殖中发挥了重要作用。
目的:制备可注射型猪小肠黏膜下层,观察其与大鼠脂肪间充质干细胞的体外共培养情况。
方法:制备可注射型猪小肠黏膜下层与SD大鼠脂肪间充质干细胞。①CCK-8法检测细胞增殖:将第3代脂肪间充质干细胞接种到可注射型猪小肠黏膜下层上(实验组),以正常培养的细胞为对照组,培养1,3,5,7 d观察细胞增殖;②Live/dead染色法检测细胞存活:分别以猪小肠黏膜下层浸提液(实验组)与完全培养基培养(对照组)第3代脂肪间充质干细胞,培养1,3,5,7 d观察细胞存活。
结果与结论:①扫描电镜观察结果:脂肪间充质干细胞能在材料上很好黏附,呈椭圆形和条索状生长;②细胞增殖结果:实验组培养1,5 d的细胞A值高于对照组(P < 0.05);③细胞存活:随时间延长,两组中细胞数量均呈上升趋势,共培养第1天时,两组细胞基本全部存活,随后可见两组均有死细胞出现,两组死细胞数在各时间点无明显差别;④结果表明:可注射型猪小肠黏膜下层具有良好的细胞相容性。

关键词: 生物材料, 材料相容性, 可注射支架材料, 猪小肠黏膜下层, 脂肪间充质干细胞, 脂肪组织工程, 国家自然科学基金

Abstract:

BACKGROUND: The decellularized porcine small intestinal submucosa is a kind of bioactive extracellular matrix, which is mainly composed of collagen, glycoprotein, proteoglycan and rich in collagen, glycosaminoglycan and various growth factors, and these components play an important role in promoting the differentiation and proliferation of tissue cells.
OBJECTIVE: To prepare the injectable small intestinal submucosa and to investigate its co-culture with rat adipose-derived mesenchymal stem cells in vitro.
METHODS: The injectable small intestinal submucosa and rat adipose-derived stem cells were prepared. Cell counting kit-8 test for cell proliferation: Passage 3 adipose-derived stem cells were seeded onto the injectable small intestinal submucosa (experimental group) and cells cultured under normal condition as control group. The cell proliferation was observed at 1, 3, 5 and 7 days of incubation. Live/dead staining test for the survival of cells: Passage 3 adipose-derived stem cells were respectively cultured in the injectable small intestinal submucosa extracts (experimental group) and complete culture medium (control group). Cell survival was determined at 1, 3, 5 and 7 days of culture.
RESULTS AND CONCLUSION: Scanning electron microscope oval and strip adipose- derived stem cells adhered onto the material. The absorbance values in the experimental group were higher than those in the control group at 1 and 5 days of incubation (P < 0.05). Cell survival: The number of cells appeared to be in a rising trend with time in both two groups; after 1-day co-culture, all cells in the two groups survived. Then dead cells appeared in both two groups, showing no significant difference. These results show that the injectable small intestinal submucosa exhibits a good cytocompatibility. 

Key words: Extracellular Matrix, Stem Cells, Tissue Engineering

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