机构：[1]Biomaterials & Tissue Engineering Division,Department of Endodontics, Prosthodontics and Operative Dentistry, Univer- sity of Maryland Dental School, Baltimore, MD 21201, USA[2]State Key Laboratory of Oral Diseases,West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China[3]Stem Cell Program in Institute for Cell Engineering and Division of Hematology, Johns Hopkins University, Baltimore, MD 21205, USA[4]Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA[5]University of Maryland Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA[6]Department of Mechanical Engineering,University of Maryland, Baltimore County, MD 21250, USA
Induced pluripotent stem cells (iPSCs) have great potential due to their proliferation and differentiation capability. The objectives of this study were to generate iPSC-derived mesenchymal stem cells (iPSC-MSCs), and investigate iPSC-MSC proliferati on and osteogenic differentiation on calcium phosphate cement (CPC) containing biofunctional agents for the first time. Human iPSCs were derived from marrow CD34+ cells which were reprogrammed by a single episomal vector. iPSCs were cultured to form embryoid bodies (EBs), and MSCs migrated out of EBs. Five biofunctional agents were incorporated into CPC: RGD (Arg-Gly-Asp) peptides, fibronectin (Fn), fibronectin-like engineered polymer protein (FEPP), extracellular matrix Geltrex, and platelet concentrate. iPSC-MSCs were seeded on five biofunctionalized CPCs: CPC-RGD, CPC-Fn, CPC-FEPP, CPC-Geltrex, and CPC-Platelets. iPSC-MSCs on biofunctional CPCs had enhanced proliferation, actin fiber expression, osteogenic differentiation and mineralization, compared to control. Cell proliferation was greatly increased on biofunctional CPCs. iPSC-MSCs underwent osteogenic differentiation with increased alkaline phosphatase, Runx2 and collagen-I expressions. Mineral synthesis by iPSC-MSCs on CPC-Platelets was 3-fold that of CPC control. In conclusion, iPSCs showed high potential for bone engineering. iPSC-MSCs on biofunctionalized CPCs had cell proliferation and bone mineralization that were much better than traditional CPC. iPSC-MSC-CPC constructs are promising to promote bone regeneration in craniofacial/orthopedic repairs.
基金：
discussions．This study was supported by NIH
R01 DE1 41 90 fHX)，R21 DE22625 fHX)and R01 HL一073781
fLC)，and the University of Maryland SchooI of Dentistry
startup fund(HX)
语种：
外文
PubmedID：
中科院(CAS)分区：
出版当年[2013]版：
无
最新[2023]版：
大类|1 区医学
小类|1 区细胞与组织工程
第一作者：
第一作者机构：[1]Biomaterials & Tissue Engineering Division,Department of Endodontics, Prosthodontics and Operative Dentistry, Univer- sity of Maryland Dental School, Baltimore, MD 21201, USA
通讯作者：
通讯机构：[1]Biomaterials & Tissue Engineering Division,Department of Endodontics, Prosthodontics and Operative Dentistry, Univer- sity of Maryland Dental School, Baltimore, MD 21201, USA[4]Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA[5]University of Maryland Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA[6]Department of Mechanical Engineering,University of Maryland, Baltimore County, MD 21250, USA
