中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (45): 7255-7259.doi: 10.3969/j.issn.2095-4344.2014.45.008

• 胚胎干细胞 embryonic stem cells • 上一篇    下一篇

低氧条件下诱导人胚胎干细胞向血管内皮前体细胞的分化

夏振伟1,王纪文2,李向东2,魏国峰2   

  1. 1大连市中心医院心血管内科,辽宁省大连市 116033;2大连医科大学附属第二医院心血管内科,辽宁省大连市 116023
  • 出版日期:2014-11-05 发布日期:2014-11-05
  • 通讯作者: 魏国峰,硕士,主任医师,大连医科大学附属第二医院心血管内科,辽宁省大连市 116023
  • 作者简介:夏振伟,男,1974年生,辽宁省大连市人,汉族,1997年锦州医学院毕业,硕士,副主任医师,主要从事心律失常、冠心病及高血压方面的研究。
  • 基金资助:

    辽宁省自然科学基金计划资助(2013023005,2014023018)

Differentiation of embryonic stem cells into endothelial progenitor cells under hypoxic condition

Xia Zhen-wei1, Wang Ji-wen2, Li Xiang-dong2, Wei Guo-feng2   

  1. 1Department of Cardiovascular Medicine, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, Dalian 116033, Liaoning Province, China; 2Department of Cardiovascular Medicine, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
  • Online:2014-11-05 Published:2014-11-05
  • Contact: Wei Guo-feng, Master, Chief physician, Department of Cardiovascular Medicine, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
  • About author:Xia Zhen-wei, Master, Associate chief physician, Department of Cardiovascular Medicine, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, Dalian 116033, Liaoning Province, China
  • Supported by:

    the Natural Science Foundation of Liaoning Province, No. 2013023005, 2014023018

摘要:

背景:种子细胞的数量和质量是制约血管组织工程研究的重要瓶颈,而如何获取干细胞源内皮细胞是解决该瓶颈问题的关键。

 

目的:探讨添加血管内皮生长因子联合低氧环境是否能够协同高效诱导胚胎干细胞向内皮细胞定向分化。

 

方法:采用无血清培养基mTeSR®1维持培养人胚胎干细胞H9。通过添加血管内皮生长因子(50 μg/L)联合低氧条件(体积分数为5%O2)诱导H9细胞向内皮细胞分化。采用免疫荧光染色技术、定量RT-PCR以及低密度脂蛋白摄取实验对人胚胎干细胞源内皮细胞进行表型和功能评价。

 

结果与结论:添加血管内皮生长因子联合低氧培养条件可促进H9细胞向内皮细胞方向分化。该胚胎干细胞源内皮细胞不但高水平表达内皮细胞的标志基因(kdrpecam)和标记蛋白D31,而且还能够摄取低密度脂蛋白,形成类似微血管结构。提示血管内皮生长因子与低氧在诱导干细胞向内皮细胞分化过程中存在协同效应,可高效获得具有理想表型和功能活性的干细胞源内皮细胞。

 

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


全文链接:

关键词: 干细胞, 胚胎干细胞, 低氧, 组织工程, 内皮细胞, 血管内皮生长因子, 辽宁省自然科学基金

Abstract:

BACKGROUND: The quantity and quality of seed cells is a critical bottleneck of the development of vascular tissue engineering. To address this issue, stem cell-derived endothelial cells have been a hot spot in this field due to their potential in providing the ideal seed cells.

OBJECTIVE: To elucidate the effect of vascular endothelial growth factor (VEGF) supplementation combined with hypoxic culture condition on the lineage-specific differentiation of embryonic stem cells into endothelial cells.
METHODS: Serum-free medium mTeSR®1 was applied to cultivate H9 cells in vitro. A conditioned medium containing 50 μg/L vascular endothelial growth factor was utilized to induce H9 cells to differentiate into endothelial cells under the hypoxic culture condition (5% O2). The cell under normal condition (5% CO2) with or without vascular endothelial growth factor served as controls. The phenotype and function of human embryonic stem cells-derived endothelial cells were assayed by immunofluorescence staining, quantitative RT-PCR, and low-density lipoprotein uptake experiment.
RESULTS AND CONCLUSION: Compared with the control group, the H9 cells were induced to be differentiated into endothelial-like cells more efficiently when they were cultivated under a conditioned medium with vascular endothelial growth factor supplementation under the hypoxic condition. These differentiated cells not only expressed some important surface markers of endothelia cells, including kdr, pecam, but also took in low-density lipoprotein to form microvessle-like structures. This culture system supports a synergy effect of vascular endothelial growth factor and hypoxic environment that can efficiently promotes the lineage-specific differentiation of embryonic stem cells into endothelial cells with good phenotype and functionality.

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


全文链接:

Key words: embryonic stem cells, endothelial cells, vascular endothelial growth factors, anoxia

中图分类号: