中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (21): 3281-3286.doi: 10.3969/j.issn.2095-4344.2017.21.001

• 骨髓干细胞 bone marrow stem cells •    下一篇

硫化氢通过缺氧诱导因子1α促进张应力下骨髓间充质细胞的成骨

蒋校文,张 翼,范晓升,陈彦泽   

  1. 郴州市第一人民医院口腔科,南华大学转化医学研究所,湖南省郴州市 423000
  • 修回日期:2017-04-26 出版日期:2017-07-28 发布日期:2017-08-02
  • 通讯作者: 蒋校文。郴州市第一人民医院口腔科,南华大学转化医学研究所,湖南省郴州市 423000
  • 作者简介:蒋校文,男,1981年生,汉族,2010年四川大学华西口腔医学院毕业,副主任医师,目前主要从事牵张成骨的机制研究。
  • 基金资助:

    国家自然科学基金(81301651);郴州市第一人民医院重点项目(N2015-006)

Hydrogen sulfide promotes the osteogenesis of bone marrow mesenchymal cells through hypoxia-inducible factor-1 alpha under tensile stress

Jiang Xiao-wen, Zhang Yi, Fan Xiao-sheng, Chen Yan-ze   

  1. Department of Stomatology, the First People’s Hospital of Chenzhou & Institute of Translation Medicine, University of China South, Chenzhou 423000, Hunan Province, China
  • Revised:2017-04-26 Online:2017-07-28 Published:2017-08-02
  • Contact: Jiang Xiao-wen, Department of Stomatology, the First People’s Hospital of Chenzhou & Institute of Translation Medicine, University of China South, Chenzhou 423000, Hunan Province, China
  • About author:Jiang Xiao-wen, Associate chief physician, Department of Stomatology, the First People’s Hospital of Chenzhou & Institute of Translation Medicine, University of China South, Chenzhou 423000, Hunan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81301651; the Key Project of the First People’s Hospital of Chenzhou, No. N2015-006

摘要:

文章快速阅读:

文题释义:
牵张成骨的特性:
牵张成骨是一种内源性骨组织工程技术,是通过将骨骼切开,在切骨线两侧安放特制的牵张器,经过一定的延迟期后(5-7 d),缓慢牵张切骨间隙(1.0-1.5 mm/d),使切骨间隙不断增宽,并激发机体组织再生的潜力,在牵张间隙内不断形成新生骨组织,同时使骨骼周围的肌肉、神经、血管、皮肤等同期延长,从而达到延长骨骼的目的。
缺氧诱导因子1:即低氧诱导因子1,普遍存在于人和哺乳动物细胞内,常氧下也有表达,但合成的缺氧诱导因子1蛋白很快即被细胞内氧依赖性泛素蛋白酶降解途径所降解,只有在缺氧条件下缺氧诱导因子1才可稳定表达。

 

摘要
背景:
有研究表明,硫化氢信号能够促进牵张成骨,而具体机制尚不清楚。
目的:观察硫化氢气体信号在促进张应力下大鼠骨髓间充质细胞成骨分化过程中与缺氧诱导因子1α的关系。
方法:应用四点弯曲细胞加力装置系统,对体外分离培养的大鼠骨髓间充质细胞施加2 000 μstrain的单一周期张应力,同时通过使用工具药物改变加力单元中硫化氢及缺氧诱导因子1α的含量水平,加力后检测成骨标志物的变化。
结果与结论:①细胞成骨:外源性硫化氢信号能够促进张应力下大鼠骨髓间充质细胞成骨,而抑制加力单元缺氧诱导因子1α的表达则会减弱硫化氢信号的促进成骨作用;②结果说明:硫化氢信号系统可能通过缺氧诱导因子1α促进张应力下大鼠大鼠骨髓间充质细胞成骨作用。

 

关键词: 干细胞, 骨髓干细胞, 硫化氢, 缺氧诱导因子, 骨髓间充质细胞, 张应力, 大鼠, 成骨, GYY4137, YC-1, 牵张成骨, 四点弯曲, 国家自然科学基金

Abstract:

BACKGROUND: Hydrogen sulfide signaling has been proved to promote distraction osteogenesis; however, the underlying mechanism remains unclear.

OBJECTIVE: To evaluate the relationship between hydrogen sulfide and hypoxia-inducible factor-1α (HIF-1α) during the osteogenesis of rat bone marrow mesenchymal cells under tensile stress. 
METHODS: 2 000 μ strain was loaded on the in vitro cultured rat bone marrow mesenchymal cells by a four-point bending apparatus, and hydrogen sulfide donor or HIF-1α inhibitor was adopted in the tensile unit. Subsequently, the levels of osteogenic markers were detected.
RESULTS AND CONCLUSION: Exogenous hydrogen sulfide signaling could promote the osteogenesis of rat bone marrow mesenchymal cells under tensile stress. However, this promotion was obviously eliminated when the endogenous HIF-1α expression was inhibited. These results show that hydrogen sulfide signaling system promotes the osteogenesis of rat bone marrow mesenchymal cells under tensile stress probably through HIF-1α.

 

Key words: Tissue Engineering, Hydrogen Sulfide, Hypoxia-Inducible Factor 1, alpha Subunit

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