Calcified Tissue International

, Volume 99, Issue 4, pp 396–407 | Cite as

Sonic Hedgehog Promotes Cementoblastic Differentiation via Activating the BMP Pathways

  • Won-Jung Bae
  • Q-Schick Auh
  • Hyun-Chang Lim
  • Gyu-Tae Kim
  • Hyun-Soo Kim
  • Eun-Cheol Kim
Original Research


Although sonic hedgehog (SHH), an essential molecule in embryogenesis and organogenesis, stimulates proliferation of human periodontal ligament (PDL) stem cells, the effects of recombinant human SHH (rh-SHH) on osteoblastic differentiation are unclear. To reveal the role of SHH in periodontal regeneration, expression of SHH in mouse periodontal tissues and its effects on the osteoblastic/cementoblastic differentiation in human cementoblasts were investigated. SHH is immunolocalized to differentiating cementoblasts, PDL cells, and osteoblasts of the developing mouse periodontium. Addition of rh-SHH increased cell growth, ALP activity, and mineralization nodule formation, and upregulated mRNA expression of osteoblastic and cementoblastic markers. The osteoblastic/cementoblastic differentiation of rh-SHH was abolished by the SHH inhibitor cyclopamine (Cy) and the BMP antagonist noggin. rh-SHH increased the expression of BMP-2 and -4 mRNA, as well as levels of phosphorylated Akt, ERK, p38, and JNK, and of MAPK and NF-κB activation, which were reversed by noggin, Cy, and BMP-2 siRNA. Collectively, this study is the first to demonstrate that SHH can promote cell growth and cell osteoblastic/cementoblastic differentiation via BMP pathway. Thus, SHH plays important roles in the development of periodontal tissue, and might represent a new therapeutic target for periodontitis and periodontal regeneration.


Sonic hedgehog Cementoblasts Differentiation Signal pathways 



This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (No. 2012R1A5A2051384).

Compliance with Ethical Standards

Conflict of Interest

Won-Jung Bae, Q-Schick Auh, Hyun-Chang Lim, Gyu-Tae Kim, Hyun-Soo Kim and Eun-Cheol Kim declare that they have no conflict of interest.

Human and Animal Rights and Informed Consent

The animal experimental procedures were performed in accordance with the ethical guidelines and were approved by the Kyung Hee University Animal Care Committee (Seoul, Korea).


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Won-Jung Bae
    • 1
  • Q-Schick Auh
    • 2
  • Hyun-Chang Lim
    • 3
  • Gyu-Tae Kim
    • 4
  • Hyun-Soo Kim
    • 5
  • Eun-Cheol Kim
    • 1
  1. 1.Department of Oral and Maxillofacial Pathology, School of Dentistry and Research Center for Tooth & Periodontal Regeneration (MRC)Kyung Hee UniversitySeoulRepublic of Korea
  2. 2.Department of Oral Medicine, School of DentistryKyung Hee UniversitySeoulRepublic of Korea
  3. 3.Department of Periodontology, School of DentistryKyung Hee UniversitySeoulRepublic of Korea
  4. 4.Department of Oral and Maxillofacial Radiology, School of DentistryKyung Hee UniversitySeoulRepublic of Korea
  5. 5.Department of Orthodontics, Graduate SchoolKyung Hee UniversitySeoulRepublic of Korea

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