›› 2015, Vol. 6 ›› Issue (3): 150-154.

• 论著 • 上一篇    下一篇

组织特异性间充质干细胞的牙周再生对比

朱斌1,赵喜聪2,李楠1,金岩3   

  1. 1. 西藏军区总医院口腔科
    2. 第四军医大学组织工程与再生中心
    3. 第四军医大学口腔医院组织工程中心
  • 收稿日期:2015-07-30 修回日期:2015-09-08 出版日期:2015-09-25 发布日期:2015-10-08
  • 通讯作者: 朱斌 E-mail:antony-2004@163.com

Comparation of specific-tissue derived mesenchymal stem cells in periodontal regeneration

  • Received:2015-07-30 Revised:2015-09-08 Online:2015-09-25 Published:2015-10-08

摘要: 目的:对比不同特异性组织来源的间充质干细胞的牙周再生能力。方法:体外培养人牙周膜干细胞(human periodontal ligament stem cells , hPDLSCs),人颌骨来源的骨髓间充质干细胞(human jaw-derived bone marrow-derived mesenchymal stem cells , hJBMMSCs)和人髂骨来源的骨髓间充质干细胞(human iliac-derived BMMSCs , hIBMMSCs),成骨诱导后进行成骨指标检测。间接共培养JBMMSCs/IBMMSCs与PDLSCs,通过RTPCR检测成骨相关基因,观察组织特异性来源的细胞间交互作用。构建JBMMSCs/IBMMSCs+PDLSCs细胞聚合体(cell aggregates,CAs),检测成骨基因表达以及裸鼠皮下8w异位牙周再生能力。结果:经成骨诱导,hJBMMSCs的成骨相关指标表达均显著高于hIBMMSCs和hPDLSCs(p<0.05)。经JBMMSCs诱导的PDLSCs的成骨基因表达显著高于IBMMSCs(p<0.05);JBMMSCs+PDLSCs CAs成骨相关基因表达高于IBMMSCs+PDLSCs CAs(p<0.05),并且在裸鼠皮下异位再生牙周组织,前者形成排列规律的垂直于CBB表面的牙周膜样纤维,并且有更多新生骨基质沉淀。结论:PDLSCs和JBMMSCs是具有组织特异性的间充质干细胞,是更合适牙周组织再生的种子细胞。

Abstract: Objective: to compare the periodontal regeneration of different specific-tissue derived mesenchymal stem cells. Methods: human periodontal ligament stem cells (hPDLSCs), human jaw-derived bone marrow-derived mesenchymal stem cells (hJBMMSCs) and human iliac-derived bone marrow-derived mesenchymal stem cells (hJBMMSCs) were cultured in vitro. After osteogenic induction, relative osteogenic tests were performed. PDLSCs induced by JBMMSCs/IBMMSCs were tested osteogenic expression by RTPCR. Cell aggregates (CAs) of PDLSCs and JBMMSCs/IBMMSCs were compound. The osteogenic genes expression were tested; PDL regeneration in nude mice ectopic transplantation was observed. Results: After osteogenic induction, relative osteogenic tests of JBMMSCs were higher than those of IBMMSCs and PDLSCs. PDLSCs induced by JBMMSCs expressed stronger osteogenic genes than by IBMMSCs. CAs of PDLSCs/JBMMSCs expressed stronger osteogenic genes, made more regular and vertical inserting fibers into the surface of CBB, regenerated more new bone matrix than CAs of PDLSCs/IBMMSCs. Conclusions: JBMMSCs and PDLSCs are specific-tissue MSCs and more appropriate for PDL regeneration.