Morphological evaluation during in vitro chondrogenesis of dental pulp stromal cells
Restorative Dentistry & Endodontics
;
: 34-40, 2012.
Article
in Korean
| WPRIM
| ID: wpr-182028
ABSTRACT
OBJECTIVES:
The aim was to confirm the stem cell-like properties of the dental pulp stromal cells and to evaluate the morphologic changes during in vitro chondrogenesis. MATERIALS ANDMETHODS:
Stromal cells were outgrown from the dental pulp tissue of the premolars. Surface markers were investigated and cell proliferation rate was compared to other mesenchymal stem cells. Multipotency of the pulp cells was confirmed by inducing osteogenesis, adipogenesis and chondrogenesis. The morphologic changes in the chondrogenic pellet during the 21 day of induction were evaluated under light microscope and transmission electron microscope. TUNEL assay was used to evaluate apoptosis within the chondrogenic pellets.RESULTS:
Pulp cells were CD90, 105 positive and CD31, 34 negative. They showed similar proliferation rate to other stem cells. Pulp cells differentiated to osteogenic, adipogenic and chondrogenic tissues. During chondrogenesis, 3-dimensional pellet was created with multi-layers, hypertrophic chondrocyte-like cells and cartilage-like extracellular matrix. However, cell morphology became irregular and apoptotic cells were increased after 7 day of chondrogenic induction.CONCLUSIONS:
Pulp cells indicated mesenchymal stem cell-like characteristics. During the in vitro chondrogenesis, cellular activity was superior during the earlier phase (within 7 day) of differentiation.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Osteogenesis
/
Stem Cells
/
Bicuspid
/
Cartilage
/
Stromal Cells
/
Apoptosis
/
Durapatite
/
In Situ Nick-End Labeling
/
Chondrogenesis
/
Dental Pulp
Language:
Korean
Journal:
Restorative Dentistry & Endodontics
Year:
2012
Type:
Article
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