中国实用口腔科杂志

• 论著 • 上一篇    下一篇

人牙髓干细胞及非牙髓干细胞中微小RNA表达谱比较研究

吕红兵1,郑碧琼1,雷丽珊1,张明1,傅升2,樊丽娜2   

  1. 作者单位:1.福建医科大学附属口腔医院牙体牙髓一科,福州350002;2.南京军区福州总医院口腔科,福州350002
  • 出版日期:2014-03-15 发布日期:2014-03-31
  • 通讯作者: 吕红兵
  • 基金资助:

    福建省自然科学基金面上项目(2011J01169);福建省科技厅重点项目( 2011Y0024)

Comparison of miRNAs expression profiles between human dental pulp stem cells and non-stem cells.

LV Hong-bing*,ZHENG Bi-qiong,LEI Li-shan,ZHANG Ming,FU Sheng, FAN Li-na   

  1. *The Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou 350002,China
  • Online:2014-03-15 Published:2014-03-31

摘要:

目的 比较微小RNA(miRNAs)在人牙髓干细胞(dental pulp stem cells, DPSCs)及非DPSCs中的表达差异,探讨其在维持DPSCs干性状态中的作用。方法 本研究于2013年1—10月在福建医科大学附属口腔医院完成。 原代培养人牙髓细胞,利用结合了STRO-1特异性抗体的免疫磁珠分选获得DPSCs,并进行成牙本质样细胞的诱导分化,检测碱性磷酸酶(ALP)、骨钙素(OC)值以及进行von Kossa染色,鉴定其分化能力。采用miRNA基因芯片技术,检测DPSCs和非DPSCs中miRNAs的表达,筛选出差异表达的miRNAs。结果 与非DPSCs相比,DPSCs中表达上调超过2倍的miRNAs有11个,表达下调超过2倍的miRNAs有3个。结论 miRNAs表达谱的变化可能与DPSCs干性状态的维持相关。

关键词: 牙髓干细胞, miRNAs, 表达谱, 干性

Abstract:

Abstract: Objective To observe the expression of miRNAs between human dental pulp stem cells (DPSCs) and human dental pulp non-stem cells and to analyze the roles of miRNA in the stemness of DPSCs. Methods DPSCs were isolated by immune-magnetic beads binding specific STRO-1 antibody separation system. Mineralization medium-induced odontoblasts-like cells differentiated from DPSCs were tested by ALP, OC values and von Kossa staining. Differential miRNAs of human dental pulp stem cells and non-stem cells were screened by microRNA array. Results miRNA microarrays revealed that 11 miRNAs were upregulated in DPSCs while 3 miRNAs were downregulated compared with non-stem cells. Conclusion Stemness of DPSCs may have a close relationship with differential miRNAs expression.

Key words: dental pulp stem cells, miRNAs, profile, stemness

中图分类号: