Recombinant Human Plasminogen Activator Inhibitor-1 Accelerates Odontoblastic Differentiation of Human Stem Cells from Apical Papilla

被引:17
作者
Jin, Bin [1 ]
Choung, Pill-Hoon [1 ]
机构
[1] Seoul Natl Univ, Sch Dent, Dent Res Inst, Dept Oral & Maxillofacial Surg,Tooth Bioengn Lab, 28 Yeongeon Dong Jongno Gu, Seoul, South Korea
基金
新加坡国家研究基金会;
关键词
TOOTH ROOT DEVELOPMENT; HUMAN DENTAL-PULP; FACTOR I-C; EXTRACELLULAR-MATRIX; OSTEOGENIC DIFFERENTIATION; EXPRESSION PATTERNS; TISSUE REGENERATION; SIALOPROTEIN; COLLAGEN; GROWTH;
D O I
10.1089/ten.tea.2015.0273
中图分类号
Q813 [细胞工程];
学科分类号
摘要
Dental caries, the most prevalent oral disease in dental patients, involves the phases of demineralization and destruction of tooth hard tissues like enamel, dentin, and cementum. Dentin is a major component of the root and is also the innermost layer that protects the tooth nerve, exposure of which results in pain. In this study, we used human stem cells from apical papilla (hSCAP), which are early progenitor cells, to examine the effects of recombinant human plasminogen activator inhibitor-1 (rhPAI-1) on odontogenic differentiation in vitro and in vivo. We demonstrated that rhPAI-1 promoted the proliferation and odontogenic differentiation of hSCAP and increased the expression levels of odontoblast-associated markers. We also observed that rhPAI-1 upregulated the expression of Smad4, nuclear factor I-C (NFI-C), Runx2, and osterix (OSX) during odontogenic differentiation. Notably, transplantation of rhPAI-1-treated hSCAP effectively induced odontoblastic differentiation and dentinal formation. And the differentiated odontoblast-like cells showed numerous odontoblast processes inserted in dentin tubules and arranged collagen fibers. Furthermore, odontoblast-associated markers were more highly expressed in the rhPAI-1-induced differentiated odontoblast-like cells compared with the control group. These markers were also more highly expressed in the newly formed dentin-like tissue of the rhPAI-1-treated group compared with the control group. Consistent with our in vitro results, the expression levels of Smad4, NFI-C, and OSX were also increased in the rhPAI-1-treated group compared with the control group. Taken together, these results suggest that rhPAI-1 promotes odontoblast differentiation and dentin formation of hSCAP, and Smad4/NFI-C/OSX may play critical roles in the rhPAI-1-induced odontogenic differentiation. Thus, dental stem cells from apical papilla combined with rhPAI-1 could lead to dentin regeneration in clinical implications.
引用
收藏
页码:721 / 732
页数:12
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