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Article

Expression and roles of syndecan-4 in dental epithelial cell differentiation

  • Authors:
    • Zhiling Yan
    • Guoqing Chen
    • Yaling Yang
    • Liang Sun
    • Zongting Jiang
    • Lian Feng
    • Mei Yu
    • Weihua Guo
    • Weidong Tian
  • View Affiliations / Copyright

    Affiliations: State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China, National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
  • Pages: 1301-1308
    |
    Published online on: August 19, 2014
       https://doi.org/10.3892/ijmm.2014.1910
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Abstract

Syndecan-4 (SDC4), a transmembrane heparan sulfate proteoglycan, acts as a signal transducer. It affects the growth and differentiation of a number of tissues and organs. However, the specific mechanisms through which SDC4 regulates the differentiation of dental epithelial cells (amelogenesis) and tooth development remains largely unknown. In the present study, to identify the SDC4-regulated processes in dental epithelial cells, the SDC4 expression pattern was examined in mouse molar and postnatal incisor tooth germs during the late bell stage of development. Small interfering RNA (siRNA) was designed for this study and used to downregulate SDC4 expression in the rat dental epithelial cell line, HAT-7. The results revealed that SDC4 was mainly present in the oral epithelium, the dental epithelial cells of enamel organs in the molars and the cervical loops in the incisors. When the inner enamel epithelial cells gave rise to ameloblasts, however, the loss of SDC4 expression was evident. SDC4 was also expressed in stratum intermedium (SI) cells in the incisors and in dental mesenchymal cells adjacent to the cervical loops in molars (E18) and postnatal incisors. Fibroblast growth factor 10 (FGF10) promoted proliferation and slightly decreased cell differentiation. The knockdown of SDC4 using specific siRNA led to a decrease in cell proliferation and a highly significant increase in amelogenin, ameloblastin, kallikrein 4 and matrix metalloproteinase 20 expression, molecules that are known to participate in the formation of enamel. These effects were attenuated by FGF10, which upregulated SDC4 expression. Taken together, these results suggest that SDC4 participates in amelogenesis, and FGF10 may modulate dental epithelial cell behaviors through the regulation of SDC4 expression.
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Copy and paste a formatted citation
Spandidos Publications style
Yan Z, Chen G, Yang Y, Sun L, Jiang Z, Feng L, Yu M, Guo W and Tian W: Expression and roles of syndecan-4 in dental epithelial cell differentiation. Int J Mol Med 34: 1301-1308, 2014.
APA
Yan, Z., Chen, G., Yang, Y., Sun, L., Jiang, Z., Feng, L. ... Tian, W. (2014). Expression and roles of syndecan-4 in dental epithelial cell differentiation. International Journal of Molecular Medicine, 34, 1301-1308. https://doi.org/10.3892/ijmm.2014.1910
MLA
Yan, Z., Chen, G., Yang, Y., Sun, L., Jiang, Z., Feng, L., Yu, M., Guo, W., Tian, W."Expression and roles of syndecan-4 in dental epithelial cell differentiation". International Journal of Molecular Medicine 34.5 (2014): 1301-1308.
Chicago
Yan, Z., Chen, G., Yang, Y., Sun, L., Jiang, Z., Feng, L., Yu, M., Guo, W., Tian, W."Expression and roles of syndecan-4 in dental epithelial cell differentiation". International Journal of Molecular Medicine 34, no. 5 (2014): 1301-1308. https://doi.org/10.3892/ijmm.2014.1910
Copy and paste a formatted citation
x
Spandidos Publications style
Yan Z, Chen G, Yang Y, Sun L, Jiang Z, Feng L, Yu M, Guo W and Tian W: Expression and roles of syndecan-4 in dental epithelial cell differentiation. Int J Mol Med 34: 1301-1308, 2014.
APA
Yan, Z., Chen, G., Yang, Y., Sun, L., Jiang, Z., Feng, L. ... Tian, W. (2014). Expression and roles of syndecan-4 in dental epithelial cell differentiation. International Journal of Molecular Medicine, 34, 1301-1308. https://doi.org/10.3892/ijmm.2014.1910
MLA
Yan, Z., Chen, G., Yang, Y., Sun, L., Jiang, Z., Feng, L., Yu, M., Guo, W., Tian, W."Expression and roles of syndecan-4 in dental epithelial cell differentiation". International Journal of Molecular Medicine 34.5 (2014): 1301-1308.
Chicago
Yan, Z., Chen, G., Yang, Y., Sun, L., Jiang, Z., Feng, L., Yu, M., Guo, W., Tian, W."Expression and roles of syndecan-4 in dental epithelial cell differentiation". International Journal of Molecular Medicine 34, no. 5 (2014): 1301-1308. https://doi.org/10.3892/ijmm.2014.1910
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