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SHED repair critical‐size calvarial defects in mice
Author(s) -
Seo BM,
Sonoyama W,
Yamaza T,
Coppe C,
Kikuiri T,
Akiyama K,
Lee JS,
Shi S
Publication year - 2008
Publication title -
oral diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.953
H-Index - 87
eISSN - 1601-0825
pISSN - 1354-523X
DOI - 10.1111/j.1601-0825.2007.01396.x
Subject(s) - mesenchymal stem cell , biology , microbiology and biotechnology , stem cell , stem cell factor , bone marrow , immunology , haematopoiesis , pathology , medicine
Objective: Stem cells from human exfoliated deciduous teeth (SHED) are a population of highly proliferative postnatal stem cells capable of differentiating into odontoblasts, adipocytes, neural cells, and osteo‐inductive cells. To examine whether SHED‐mediated bone regeneration can be utilized for therapeutic purposes, we used SHED to repair critical‐size calvarial defects in immunocompromised mice. Materials and methods: We generated calvarial defects and transplanted SHED with hydroxyapatite/tricalcium phosphate as a carrier into the defect areas. Results: SHED were able to repair the defects with substantial bone formation. Interestingly, SHED‐mediated osteogenesis failed to recruit hematopoietic marrow elements that are commonly seen in bone marrow mesenchymal stem cell‐generated bone. Furthermore, SHED were found to co‐express mesenchymal stem cell marker, CC9/MUC18/CD146, with an array of growth factor receptors such as transforming growth factor β receptor I and II, fibroblast growth factor receptor I and III, and vascular endothelial growth factor receptor I, implying their comprehensive differentiation potential. Conclusions: Our data indicate that SHED, derived from neural crest cells, may select unique mechanisms to exert osteogenesis. SHED might be a suitable resource for orofacial bone regeneration.