Wnt5a promotes differentiation of human dental papilla cells.
OBJECTIVE
To investigate the role of Wnt5a in the process of differentiation of human dental papilla cells (HDPCs).


METHODS
Recombinant adenovirus encoding full-length Wnt5a cDNA was constructed to investigate the biological role of Wnt5a on the differentiation of HDPCs. The effect of Wnt5a on HDPCs differentiation was determined by ALP activity assay, ALP staining and mineral induction assay. Mineralization-related gene expressions were assessed by RT-PCR.


RESULTS
Immunostaining revealed Wnt5a expression in the odontoblast layer and dental papilla tissue. Over-expression of Wnt5a by transfecting HDPCs with an Wnt5a-carrying construct increased ALPase activity and the formation of mineralized nodules of HDPCs. RT-PCR analysis showed that the expressions of mineralization-related genes, such as bone sialoprotein, collagen type I, osteonectin, osteopontin (OCN), dentine matrix protein-1 were up-regulated by Wnt5a.


CONCLUSIONS
Wnt5a promoted differentiation of HDPCs.
West China Hospital of Stomatology, Sichuan University, Chengdu, China.
L
L
Peng
L B
LB
Ren
G
G
Dong
C L
CL
Wang
P
P
Xu
L
L
Ye
X D
XD
Zhou
D000256:Adenoviridae / Q000235:genetics; D000469:Alkaline Phosphatase / Q000032:analysis / Q000235:genetics; D018929:Cell Culture Techniques; D002454:Cell Differentiation / Q000502:physiology; D024042:Collagen Type I / Q000032:analysis / Q000235:genetics; D018076:DNA, Complementary / Q000235:genetics; D003771:Dental Papilla / Q000166:cytology*; D016326:Extracellular Matrix Proteins / Q000032:analysis / Q000235:genetics; D005786:Gene Expression Regulation / Q000235:genetics; D006801:Humans; D058574:Integrin-Binding Sialoprotein; D009804:Odontoblasts / Q000166:cytology; D015676:Osteonectin / Q000032:analysis / Q000235:genetics; D053495:Osteopontin / Q000032:analysis / Q000235:genetics; D010750:Phosphoproteins / Q000032:analysis / Q000235:genetics; D011518:Proto-Oncogene Proteins / Q000235:genetics / Q000502:physiology*; D011994:Recombinant Proteins; D012795:Sialoglycoproteins / Q000032:analysis / Q000235:genetics; D014074:Tooth Calcification / Q000235:genetics; D014162:Transfection; D051153:Wnt Proteins / Q000235:genetics / Q000502:physiology*; D000071818:Wnt-5a Protein; D000099311:Dentin Sialophosphoprotein
D000469:Alkaline Phosphatase; D024042:Collagen Type I; D018076:DNA, Complementary; D016326:Extracellular Matrix Proteins; D058574:Integrin-Binding Sialoprotein; D015676:Osteonectin; D053495:Osteopontin; D010750:Phosphoproteins; D011518:Proto-Oncogene Proteins; D011994:Recombinant Proteins; D012795:Sialoglycoproteins; D051153:Wnt Proteins; D000071818:Wnt-5a Protein; D000099311:Dentin Sialophosphoprotein; C513309:DMP1 protein, human; C546871:IBSP protein, human; C085389:WNT5A protein, human