In vitro and In vivo Osteogenic Induction of Mesenchymal Stem Cells from Rabbit Bone Marrow / 대한정형외과연구학회지
Journal of Korean Orthopaedic Research Society
;
: 79-88, 2001.
Article
in Korean
| WPRIM
| ID: wpr-104997
ABSTRACT
PURPOSE:
The aim of this study was to analyze the osteogenic effect of cultured rabbit mesenchymal stem cells(MSCs). MATERIALS ANDMETHODS:
MSCs were obtained from rabbit femur and were cultured in a Dulbecco's Modified Eagle's Medium(DMEM) with beta-glycerophosphatate, L-ascorbic acid, and dexamethasone to proliferate and differentiate into osteoprogenitor cells until 12 weeks. The expression of osteogenic markers was detected by reverse transcription-polymerase chain reaction(RT-PCR) and the release of osteocalcin was measured by Enzyme-linked Immunosorbent Assay(ELISA). MSCs that were cultured on the porous poly-L-lactic-co-glycolic acid(PLGA) scaffold were implanted into athymic nude mouse to observe the osteogenic activity.RESULTS:
As the time, we observed osteoblastic-like cells on the culture flask. Mineralized nodules were observed at 3-4 weeks. Osteogenic markers such as osteopontin, osteonectin, type I collagen, and alkaline phophatase were all identified at 2 weeks. But, expression of osteocalcin was only detected after cells differentiation. The amount of osteocalcin which is a specific protein in osteoblast, increased gradually from 2 weeks until 7 weeks. Scanning electron microscopy revealed that the MSCs were well adhered and proliferated within the PLGA scaffold. Immature bone was identified after 10 weeks in the histological examination of transplanted cell-scaffold composit.CONCLUSION:
Our results demonstrate gradual differentiation of MSCs into osteoblastic cells. The adhesion and proliferation of the cells within the biodegradable scaffold represents the possibility of bone formation using cell-scaffold composites.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Osteoblasts
/
Osteogenesis
/
Ascorbic Acid
/
Bone Marrow
/
Dexamethasone
/
Microscopy, Electron, Scanning
/
Osteocalcin
/
Osteonectin
/
Collagen Type I
/
Osteopontin
Limits:
Animals
Language:
Korean
Journal:
Journal of Korean Orthopaedic Research Society
Year:
2001
Type:
Article
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