Document Detail

Development of a serum-free system to expand dental-derived stem cells: PDLSCs and SHEDs.
MedLine Citation:
PMID:  20625993     Owner:  NLM     Status:  MEDLINE    
Recently, extracted teeth have been identified as a viable source of stem cells for tissue regenerative approaches. Current expansion of these cells requires incorporation of animal sera; yet, a fundamental issue underlying cell cultivation methods for cell therapy regards concerns in using animal sera. In this study, we investigated the development of a chemically defined, serum-free media (K-M) for the expansion of human periodontal ligament stem cells (PDLSCs) and human stem cells from exfoliated deciduous teeth (SHEDs). Proliferation assays were performed comparing cells in serum-containing media (FBS-M) with cells cultured in four different serum-free medium and these demonstrated that in these medium, the cell proliferation of both cell types was significantly less than the proliferation of cells in FBS-M. Additional proliferation assays were performed using pre-coated fibronectin (FN) tissue culture plates and of the four serum-free medium, only K-M enabled PDLSCs and SHEDs to proliferate at higher rates than cells cultured in FBS-M. Next, alkaline phosphatase activity showed that PDLSCs and SHEDs exhibited similar osteogenic potential whether cultured in K-M or FBS-M, and, additionally, cells retained their multipotency in K-M as seen by expression of chondrogenic and adipogenic genes, and positive Von Kossa, Alcian blue, and Oil Red O staining. Finally, differential expression of 84 stem cell associated genes revealed that for most genes, PDLSCs and SHEDs did not differ in their expression regardless of whether cultured in K-M or FBS-M. Taken together, the data suggest that K-M can support the expansion of PDLSCs and SHEDs and maintenance of their multipotency.
S A Tarle; S Shi; D Kaigler
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of cellular physiology     Volume:  226     ISSN:  1097-4652     ISO Abbreviation:  J. Cell. Physiol.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-10-27     Completed Date:  2010-12-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0050222     Medline TA:  J Cell Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  66-73     Citation Subset:  IM    
Department of Periodontics and Oral Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA.
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MeSH Terms
Cell Culture Techniques*
Cell Proliferation
Culture Media, Serum-Free*
Gene Expression Regulation / physiology
Periodontal Ligament / cytology*
Stem Cells / cytology*,  physiology
Tooth, Deciduous / cytology*
Reg. No./Substance:
0/Culture Media, Serum-Free

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