Document Detail

Cellular responses and expression profiling of human bone marrow stromal cells stimulated with enamel matrix proteins in vitro.
MedLine Citation:
PMID:  19922487     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: The aim of this study was to investigate biological effects and gene expression profiles of enamel matrix proteins (EMPs), on human bone marrow stromal cells (HBMSCs), for preliminary understanding of mechanisms involved in promoting periodontal regeneration by EMPs. MATERIALS AND METHODS: EMPs were extracted using the acetic acid method, and HBMSCs from human bone marrow aspirates were cultured. Attachment levels, level of cells morphologically attenuated, cell proliferation, alkaline phosphatase (ALP) activity and staining of HBMSCs were measured in the absence and in the presence of EMPs. Microarray analysis was performed to detect gene profiles of HBMSCs by treatment with 200 microg/ml EMPs, for 5 days. Four differential genes were selected for validation of the microarray data using real-time PCR. RESULTS: EMPs promoted proliferation and ALP activity of HBMSCs in a time- and dose-dependent manner, and at a concentration of 200 microg/ml significantly enhanced proliferation and ALP expression. However, there were no significant changes between EMP-treated groups and the control group in cell attachment and cell process attenuation levels. Twenty-seven genes were differentially expressed by HBMSCs in the presence of EMPs. Expressions of 18 genes were upregulated and expressions of nine genes were found to be downregulated. There was good consistency between data obtained from the validation group and microarray results. CONCLUSIONS: EMPs promoted cell proliferation and differentiation and gene expression profiles of HBMSCs were affected. This may help elucidation of mechanisms involved in promoting regeneration of periodontal tissues by EMPs.
Z C Song; R Shu; X L Zhang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-11-17
Journal Detail:
Title:  Cell proliferation     Volume:  43     ISSN:  1365-2184     ISO Abbreviation:  Cell Prolif.     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-01-14     Completed Date:  2010-02-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9105195     Medline TA:  Cell Prolif     Country:  England    
Other Details:
Languages:  eng     Pagination:  84-94     Citation Subset:  IM    
Department of Periodontology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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MeSH Terms
Alkaline Phosphatase / metabolism
Bone Marrow Cells / cytology*
Cell Differentiation
Cell Proliferation
Cells, Cultured
Dental Enamel Proteins / genetics,  metabolism*
Flow Cytometry
Gene Expression Profiling*
Oligonucleotide Array Sequence Analysis
Stromal Cells / cytology
Reg. No./Substance:
0/Dental Enamel Proteins; 0/enamel matrix proteins; EC Phosphatase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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