中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (2): 211-217.doi: 10.3969/j.issn.2095-4344.2014.02.009

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

体外培养人羊膜上皮细胞的表型及分化能力

连建春1,刘  洋2,刘  畅2, 3,吕世杰4,郭  昕2,南  丰5,孙广炜2,贺  欣1,马小军2   

  1. 1大连医科大学检验医学院,辽宁省大连市  116044;2中国科学院大连化学物理研究所生物医用材料工程组,辽宁省大连市  116023;3中国科学院大学,北京市  100049;4大连市妇产医院,辽宁省大连市  116021;5大连医科大学附属第二医院骨科,辽宁省大连市  116023
  • 收稿日期:2013-10-16 出版日期:2014-01-08 发布日期:2014-01-08
  • 通讯作者: 孙广炜,博士,副研究员,中国科学院大连化学物理研究所生物医用材料工程组,辽宁省大连市 116023 并列通讯作者:贺欣,硕士,副教授,大连医科大学检验医学院,辽宁省大连市 116044
  • 作者简介:连建春,男,1986年生,山西省大同市人,汉族,大连医科大学在读硕士,主要从事干细胞生物学以及生物材料研究。 并列第一作者:刘洋,男,1979年生,辽宁省昌图县人,汉族,2007年大连理工大学毕业,博士,副研究员,主要从事(干)细胞生物学、生物材料以及组织工程研究。
  • 基金资助:

    国家自然科学基金(31271055):模拟细胞微环境强化干细胞体外定向预分化体系的研究及其工程化构建;国家自然科学基金(81101757):利于肿瘤干细胞扩增的基质刚度与乏氧微环境的构建及调控。国家自然科学基金(21076207):细胞间质体外模拟系统的构建及物质传递基本规律的研究。国家科技重大专项(2012ZX10002-011-013):肝癌细胞三维培养模型标准化构建和规模化制备技术研究;大连市科学技术基金(2012J21DW029):体外肿瘤干细胞培养体系的建立及应用

Phenotype and differentiation capacity of human amniotic epithelial cells cultured in vitro

Lian Jian-chun1, Liu Yang2, Liu Chang2, 3, Lv Shi-jie4, Guo Xin2, Nan Feng5, Sun Guang-wei2, He Xin1,    Ma Xiao-jun2   

  1. 1The Laboratory Medical College, Dalian Medical University, Dalian 116044, Liaoning Province, China; 2Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning Province, China; 3University of Chinese Academy of Sciences, Beijing 100049, China; 4Dalian Maternity Hospital, Dalian 116021, Liaoning Province, China; 5Department of Orthopedics, the Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
  • Received:2013-10-16 Online:2014-01-08 Published:2014-01-08
  • Contact: Corresponding author: Sun Guang-wei, Doctor, Associate investigator, Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning Province, China Corresponding author: He Xin, Master, Associate professor, the Laboratory Medical College, Dalian Medical University, Dalian 116044, Liaoning Province, China
  • About author:Lian Jian-chun, Studying for master’s degree, the Laboratory Medical College, Dalian Medical University, Dalian 116044, Liaoning Province, China Liu Yang, Doctor, Associate investigator, Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 31271055, 81101757, 21076207; the National Key Science and Technology Project of China, No. 2012ZX10002-011-013; Science and Technology Foundation of Dalian, No. 2012J21DW029
     

摘要:

背景:人羊膜上皮细胞具有多系分化能力,是再生医学中重要的细胞来源。目前的研究多集中于对其分化能力的考察,而体外培养过程中羊膜上皮细胞的生物学特征如何变化尚不清楚。
目的:分析体外培养对人羊膜上皮细胞生长、表型及向心肌样细胞分化的能力等生物学特性的影响,探讨原代人羊膜上皮细胞干性标志物SSEA-4的表达水平与人羊膜上皮细胞生物学特性变化之间的关联性。
方法:使用统一分离方法获得原代羊膜上皮细胞并进行体外培养。利用CCK-8、流式细胞仪及real-time PCR等手段检测不同培养阶段人羊膜上皮细胞的增殖、表型以及向心肌样细胞分化的能力。
结果与结论:不同胎儿样本来源的原代人羊膜上皮细胞的SSEA-4表达在26.7%-97%,存在很大的个体差异。并且,随着传代次数的增加,人羊膜上皮细胞的SSEA-4表达水平显著降低,其下降程度与原代SSEA-4的表达水平无关。另外,培养后人羊膜上皮细胞的心肌分化潜能也存在很大个体差异,且其差异与原代人羊膜上皮细胞的SSEA-4表达水平的高低无关。结果提示,不同胎儿样本来源的原代人羊膜上皮细胞的SSEA-4表达水平受到个体差异的影响,需要建立更准确的临床样本筛选指标来稳定获得原代高表达SSEA-4的胎儿样本,以实现对人羊膜上皮细胞的质量监控。另外,体外培养过程中SSEA-4的表达水平受到培养条件的影响,需要继续优化培养条件以维持其高表达。此外,人羊膜上皮细胞向心肌样细胞分化的能力受到样本个体差异以及培养条件的影响,在今后还需要进一步研究。



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

关键词: 组织构建, 组织工程, 羊膜上皮细胞, 体外培养, SSEA-4, 羊膜上皮细胞标志物, 心肌样细胞分化, 国家自然科学基金

Abstract:

BACKGROUND: Human amniotic epithelial cells are an important source of cells in regenerative medicine as its  
multipotentation, but new studies mainly focused on differentiation features and there were little research oneffect of culture in vitro on biological property of amniotic epithelial cells.
OBJECTIVE: To analyze the effects of in vitro culture on growth, cell phenotype and differentiation capacity of human amniotic epithelial cells into cardiomyocyte-like cells, and explore the correlation of primarily cultured human amniotic epithelial cells marker SSEA-4 expression level and the change of biological characteristics of human amniotic epithelial cells.
METHODS: Primarily cultured human amniotic epithelial cells were obtained from amniotic tissues by using the same separation protocol. Human amniotic epithelial cells were cultured in vitro. The proliferation, cell phenotype and the differentiation capacity of human amniotic epithelial cells into cardiomyocyte-like cells were evaluated by means of cell counting kit-8, flow cytometry and real-time PCR.
RESULTS AND CONCLUSION: The SSEA-4 positive cells in primarily cultured human amniotic epithelial cells from different fetal tissues were between 26.7%-97%, which indicated that there was great individual difference among amniotic tissue samples. Moreover, with passage, the SSEA-4 expression in human amniotic epithelial cells decreased significantly, which did not correlate with the SSEA-4 expression in primarily cultured human amniotic epithelial cells. Results indicated that there was great individual difference in SSEA-4 expression level in primarily cultured human amniotic epithelial cells from different amniotic tissue samples. Thus, it is necessary to set up clinical screening indexes to get samples with higher SSEA-4 expression stably and to control the quality of human amniotic epithelial cells. In addition, during culture period, SSEA-4 expression level was affected by culture conditions. The culture conditions of human amniotic epithelial cells should be optimized to maintain SSEA-4 expression at a high level. In addition, the differentiation capacity of human amniotic epithelial cells into cardiomyocyte-like cells was also affected by individual difference among different samples and culture conditions, which will be further studied in the future.



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

Key words: stem cells, amnion, epithelial cells, cell differentiation, myocytes, cardiac, antigens, surface

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