中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (14): 2538-2543.doi: 10.3969/j.issn.2095-4344.2013.14.010

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

酸性成纤维细胞生长因子与胚胎干细胞的造血分化

许婷婷,张海萍,王跃嗣   

  1. 滨州医学院干细胞研究所,山东省烟台市  264003
  • 收稿日期:2012-06-11 修回日期:2012-07-12 出版日期:2013-04-02 发布日期:2013-04-02
  • 通讯作者: 王跃嗣,博士,副教授,滨州医学院干细胞研究所,山东省烟台市 264003 wys7416@163.com
  • 作者简介:许婷婷★,女,1987年生,山东省淄博市人,汉族,滨州医学院在读硕士,主要从干细胞发育分化研究。 xunuo258776507@163.com
  • 基金资助:

    国家自然科学基金(30801353)。

Xu Ting-ting, Zhang Hai-ping, Wang Yue-si   

  1. Stem Cell Institute of Binzhou Medical College, Yantai  264003, Shandong Province, China
  • Received:2012-06-11 Revised:2012-07-12 Online:2013-04-02 Published:2013-04-02
  • Contact: Wang Yue-si, Doctor, Associate professor, Stem Cell Institute of Binzhou Medical College, Yantai 264003, Shandong Province, China wys7416@163.com
  • About author:Xu Ting-ting★, Studying for master’s degree, Stem Cell Institute of Binzhou Medical College, Yantai 264003, Shandong Province, China xunuo258776507@163.com
  • Supported by:

    the National Natural Science Foundation of China, No. 30801353

摘要:

背景:有研究表明,在卵黄囊造血、胎肝造血和胚胎干细胞向造血干细胞分化过程中,酸性成纤维细胞生长因子可强烈表达。
目的:探讨酸性成纤维细胞生长因子对小鼠胚胎干细胞造血分化的作用,在拟胚体培养阶段施加酸性成纤维细胞生长因子,验证酸性成纤维细胞生长因子对造血形成细胞产生的调控作用。
方法:培养小鼠胚胎干细胞,将饲养层上生长状态良好的小鼠胚胎干细胞用胰酶消化成单个细胞后,利用悬滴法制备拟胚体,拟胚体继续悬浮培养,以1,2和5 μg/L酸性成纤维细胞生长因子分别培养3,5,7,9 d,通过免疫荧光法检测胚胎干细胞与拟胚体中酸性成纤维细胞生长因子的表达,流式细胞术检测Flk-1+与CD133+阳性细胞率。
结果与结论:酸性成纤维细胞生长因子在拟胚体中呈阳性表达。在5 μg/L酸性成纤维细胞生长因子作用下,Flk-1+细胞随时间增加表达增加,CD133+细胞表达模式与Flk-1+细胞类似。在1 μg/L时,Flk-1+细胞在7 d时表达达到高峰,随后下降。CD133+细胞表达结果类似。而在2 μg/L时,5 d时Flk-1+细胞表达升高,随后下降,在9 d时表达又增高。而CD133+细胞则总体呈现升高趋势。酸性成纤维细胞生长因子可促进Flk-1+与CD133+细胞的产生,证明酸性成纤维细胞生长因子能够有效促进拟胚体的扩增以及成血管血液干细胞的产生与增殖。

关键词: 干细胞, 肿瘤干细胞, 小鼠胚胎干细胞, 拟胚体, 酸性成纤维细胞生长因子, Flk-1, CD133, 国家自然科学基金, 干细胞图片文章

Abstract:

BACKGROUND: Studies have shown that acidic fibroblast growth factor can be strongly expressed in the yolk sac hematopoietic cells and fetal liver hematopoietic cells and in the differentiation process of embryonic stem cells to hematopoietic stem cells.
OBJECTIVE: To explore the effect of acidic fibroblast growth factor on hematopoietic differentiation of mice embryonic stem cells, to test and verify the regulation effect of acidic fibroblast growth factor in the formation of hematopoietic cells through adding the acidic fibroblast growth factor into the embryoid body culture stages. 
METHODS: The mouse embryonic stem cells were cultured and then digested into single cells using trypsin when they were in good conditions on the feeder layer. The embryoid bodies were prepared with hanging drop method and then continue suspension cultured for 3, 5, 7 and 9 days with 1, 2 and 5 μg/L acidic fibroblast growth factor. The expression of acidic fibroblast growth factor in embryonic stem cell and embryoid bodies was detected with immunofluorescence, and the Flk-1+ and CD133+ positive rates were detected with flow cytometry.
RESULTS AND CONCLUSION: Acidic fibroblast growth factor showed positive expression in embryoid bodies. In the effect of 5 μg/L acidic fibroblast growth factor, Flk-1+ cells expression was increased with time increasing, the CD133+ cells expression patterns were similar to Flk-1+ cells. In the effect of 1 μg/L acidic fibroblast growth factor, Flk-1+ cells expression peaked at 7 days and then decreased, and the CD133+ cells showed similar expression patterns. But in the effect of 2 μg/L acidic fibroblast growth factor, Flk-1+ cells expression was increased at 5 days, then decreased, and increased again at 9 days; while CD133+ cells expression emerged a rising trend totality. Acidic fibroblast growth factor can promote the generation of Flk-1+ and CD133+ cells, suggesting that acidic fibroblast growth factor can effectively promote the amplification of embryonic body and the production and proliferation of hemangioblasts.

Key words: stem cells, tumor stem cells, mouse embryonic stem cells, embryoid body, acidic fibroblast growth factor, Flk-1, CD133, National Natural Science Foundation of China, stem cell photographs-containing paper

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