Journal of Molecular Histology

, Volume 47, Issue 3, pp 345–351 | Cite as

Odontoblastic inductive potential of epithelial cells derived from human deciduous dental pulp

  • Hye-Kyung Lee
  • Ji-Won Park
  • You-Mi Seo
  • Ha Hoon Kim
  • Gene Lee
  • Hyun-Sook Bae
  • Joo-Cheol Park
Original Paper


For the dentin regeneration, dental epithelial cells are indispensible and must possess odontoblastic induction capability. Epithelial cell-like stem cells were recently identified in human deciduous dental pulp (DPESCs). However, their cellular characteristics remain poorly defined. The purpose of this study was to characterize DPESCs compared to HAT-7 ameloblastic cells. Expression levels of ameloblast-specific markers [odontogenic ameloblast-associated protein (Odam), matrix metalloproteinase (Mmp)-20, amelogenin, and ameloblastin] were detected in DPESCs. Co-culturing odontoblastic MDPC-23 cells with DPESCs increased expression of odontoblast differentiation markers (Dmp1 and Dspp) from days 4 to 10, while the expression of bone sialoprotein rapidly decreased. MDPC-23 cells cultured in DPESC-conditioned medium (CM) showed increased Dspp promoter activity compared with control MDPC-23 cultures. Mineralization was first observed in the CM groups from day 4 and proceeded rapidly until day 14, whereas mineralized nodules were found from day 7 in control media-cultured cells. In conclusion, DPESCs in human deciduous pulp possess ameloblast-like characteristics and differentiation properties, and substances derived from DPESCs promote odontoblastic differentiation. Thus, our results indicate that DPESCs can be a realistic epithelial source for use in odontoblastic induction and dentin formation of dental mesenchymal cells.


Dental epithelial cell Deciduous pulp Induction Epithelial-mesenchymal interaction Odontoblast 



This research was supported by the Bio and Medical Technology Development Program of the National Research Foundation (NRF) funded by the Korean government (MSIP) (No. NRF-2013M3A9B2076480).


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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • Hye-Kyung Lee
    • 1
  • Ji-Won Park
    • 2
  • You-Mi Seo
    • 1
  • Ha Hoon Kim
    • 1
  • Gene Lee
    • 3
  • Hyun-Sook Bae
    • 4
  • Joo-Cheol Park
    • 1
  1. 1.Department of Oral Histology-Developmental Biology and Dental Research Institute, School of DentistrySeoul National UniversitySeoulRepublic of Korea
  2. 2.Department of Orthodontics, School of DentistrySeoul National UniversitySeoulRepublic of Korea
  3. 3.Laboratory of Molecular Genetics and Stem Cell Differentiation, Dental Research Institute, School of DentistrySeoul National UniversitySeoulRepublic of Korea
  4. 4.Department of Dental HygieneNamseoul UniversityCheonanRepublic of Korea

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