中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (11): 1673-1677.doi: 10.3969/j.issn.2095-4344.2015.11.007

• 口腔组织构建 oral tissue construction • 上一篇    下一篇

转录因子c-fos/c-jun调控成釉细胞基质金属蛋白酶20基因的表达

唐培娟1,王长磊2,宫春梅1,唐培倩3,郝建忠2   

  1. 1潍坊医学院口腔学院,山东省潍坊市 261053;2潍坊医学院附属医院口腔科,山东省潍坊市 261031;3昌乐县中医院妇产科,山东省潍坊市 262400
  • 修回日期:2015-01-17 出版日期:2015-03-12 发布日期:2015-03-12
  • 通讯作者: 郝建忠,主任医师,硕士生导师,潍坊医学院附属医院口腔科,山东省潍坊市 261031
  • 作者简介:唐培娟,女,1988年生,山东省潍坊市昌乐县,汉族,潍坊医学院在读硕士,主要从事牙体牙髓病的研究。

c-fos/c-jun regulates extracellular matrix metalloproteinase 20 expression in ameloblasts  

Tang Pei-juan1, Wang Chang-lei2, Gong Chun-mei1, Tang Pei-qian3, Hao Jian-zhong2   

  1. 1Institute of Stomotalogy, Weifang Medical University, Weifang 261053, Shandong Province, China; 2Department of Stomatology, Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China; 3Department of Gynecology and Obstetrics, Changle Hospital of Integrative Medicine, Weifang 262400, Shandong Province, China
  • Revised:2015-01-17 Online:2015-03-12 Published:2015-03-12
  • Contact: Hao Jian-zhong, Chief physician, Master’s supervisor, Department of Stomatology, Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
  • About author:Tang Pei-juan, Studying for master’s degree, Institute of Stomatology, Weifang Medical University, Weifang 261053, Shandong Province, China

摘要:

背景:基质金属蛋白酶20是在成釉细胞中特异性表达的一种蛋白酶,其在牙齿釉质发育过程中具有重要作用。从分子角度研究基质金属蛋白酶20可受到的调控机制,为进一步做动物实验奠定基础。

目的:通过研究转录因子c-fos/c-jun对小鼠成釉细胞基质金属蛋白酶20基因的调控作用,初步确定c-fos/c-jun在牙釉质发育中的作用。
方法:首先构建c-fos真核表达载体重组质粒,分别利用双荧光素酶基因检测报告系统和定时定量RT-PCR法分析c-jun、c-fos转染成釉细胞对基质金属蛋白酶20基因活性的影响;并利用基因定点突变和双荧光素酶基因检测报告系统进一步分析c-jun、c-fos对基质金属蛋白酶20基因活性的影响。
结果与结论:双荧光素酶基因检测报告系统和定时定量RT-PCR法分析显示c-jun、c-fos转染转染小鼠成釉细胞后,基质金属蛋白酶20基因表达显著上调;突变基质金属蛋白酶20启动子的AP1结合位点后,c-fos/c-jun失去上调基质金属蛋白酶20启动子的转录活性的作用。结果提示c-fos/c-jun对基质金属蛋白酶20基因表达具有重要的调节作用,表明其在釉质发育过程中有其重要的生物学意义。


中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

关键词: 组织构建, 骨组织工程, 转录因子c-fos, 基质金属蛋白酶20, 双荧光素酶基因检测, 实时定量RT-PCR

Abstract:

BACKGROUND: Matrix metalloproteinase 20 is a protease specifically expressed in ameloblasts, which has an important role in dental enamel development. To study the regulatory mechanisms for matrix metalloproteinase 20 at the molecular level lays the foundation for further animal experiments.

OBJECTIVE: To explore the regulatory effects of transcription factor c-fos/c-jun for matrix metalloproteinase 20 in mouse ameloblasts and to preliminarily confirm the role of c-fos/c-jun in enamel development.
METHODS: First of all, a recombinant plasmid containing c-fos was established, and then dual-luciferase reporter assay system and RT-PCR were used to analyze the effects of c-fos, c-jun transfection of ameloblasts on the activity of matrix metalloproteinase 20. Furthermore, the effect of c-fos, c-jun on matrix metalloproteinase 20 was explored based on gene site-directed mutation and dual-luciferase reporter assay system.
RESULTS AND CONCLUSION: Double luciferase report assay system and RT-PCR analysis showed that the mRNA expression of matrix metalloproteinase-20 was significantly upregulated after c-fos, c-jun transfection of ameloblasts, but c-fos/c-jun could not upregulate the transcriptional activity of matrix metalloproteinase 20 promoter when mutation occurred at AP1 binging site. These findings indicate that c-fos/c-jun has significant effects in regulating the mRNA expression of matrix metalloproteinase 20, which shows c-fos/c-jun plays an important biological meaning in enamel development.


中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

Key words: Proto-Oncogene Proteins c-fos, Matrix Metalloproteinase 20, Dental Enamel

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