Document Detail

A simple and efficient method for generating Nurr1-positive neuronal stem cells from human wisdom teeth (tNSC) and the potential of tNSC for stroke therapy.
MedLine Citation:
PMID:  19579137     Owner:  NLM     Status:  MEDLINE    
BACKGROUND AIMS: We have isolated human neuronal stem cells from exfoliated third molars (wisdom teeth) using a simple and efficient method. The cultured neuronal stem cells (designated tNSC) expressed embryonic and adult stem cell markers, markers for chemotatic factor and its corresponding ligand, as well as neuron proteins. The tNSC expressed genes of Nurr1, NF-M and nestin. They were used to treat middle cerebral artery occlusion (MCAO) surgery-inflicted Sprague-Dawley (SD) rats to assess their therapeutic potential for stroke therapy. METHODS: For each tNSC cell line, a normal human impacted wisdom tooth was collected from a donor with consent. The tooth was cleaned thoroughly with normal saline. The molar was vigorously shaken or vortexed for 30 min in a 50-mL conical tube with 15-20mL normal saline. The mixture of dental pulp was collected by centrifugation and cultured in a 25-cm(2) tissue culture flask with 4-5mL Medium 199 supplemented with 5-10% fetal calf serum. The tNSC harvested from tissue culture, at a concentration of 1-2x10(5), were suspended in 3 microL saline solution and injected into the right dorsolateral striatum of experimental animals inflicted with MCAO. RESULTS: Behavioral measurements of the tNSC-treated SD rats showed a significant recovery from neurologic dysfunction after MCAO treatment. In contrast, a sham group of SD rats failed to recover from the surgery. Immunohistochemistry analysis of brain sections of the tNSC-treated SD rats showed survival of the transplanted cells. CONCLUSIONS: These results suggest that adult neuronal stem cells may be procured from third molars, and tNSC thus cultivated have potential for treatment of stroke-inflicted rats.
Kuo-Liang Yang; Mei-Fang Chen; Chia-Hsin Liao; Cheng-Yoong Pang; Py-Yu Lin
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Cytotherapy     Volume:  11     ISSN:  1477-2566     ISO Abbreviation:  Cytotherapy     Publication Date:  2009  
Date Detail:
Created Date:  2009-09-03     Completed Date:  2009-11-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100895309     Medline TA:  Cytotherapy     Country:  England    
Other Details:
Languages:  eng     Pagination:  606-17     Citation Subset:  IM    
Tzu Chi Stem Cells Centre, Tzu Chi General Hospital, Hualien, Taiwan.
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MeSH Terms
Biological Markers / metabolism
Cell Culture Techniques / methods*
Cell Differentiation
Cell Line
Cell Proliferation
Cell Survival
Cerebral Infarction / complications,  pathology
DNA-Binding Proteins / genetics,  metabolism*
Electrophysiological Phenomena
Flow Cytometry
Gene Expression Regulation
Molar, Third / cytology*
Neurons / cytology*,  metabolism,  transplantation
Rats, Sprague-Dawley
Stem Cell Transplantation
Stem Cells / cytology*,  metabolism
Stroke / complications,  therapy*
Transcription Factors / genetics,  metabolism*
Young Adult
Reg. No./Substance:
0/Biological Markers; 0/DNA-Binding Proteins; 0/Nurr1 nuclear receptor; 0/Transcription Factors

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