p38 signal pathway regulates osteogenic differentiation of maxillary primordium mesenchymal cells

Abstract

Abstract: PURPOSE: To explore whether p38 signal pathway regulates osteogenic differentiation of maxillary primordium mesenchymal cells. METHODS: The first passage of maxillary primordium mesenchymal cells (MPMCs) from E12.5 embryos were cultured in the osteogenic medium, and 10 nM SB203580 (an inhibitor of phosphorylation of p38) was added in the medium in the experimental group for 1 week. Then immunofluorescence staining was applied to detect the phosphorylation of p38 in MPMCs. Brdu label and immunofluorescence staining were used to detect the proliferation of MPMCs. ALP staining and qPCR were used to detect the mRNA expression of ALP, Runx2, OCN and OPN in MPMCs. ALP staining and PCR were used to evaluate the osteogenic capability of MPMCs. SPSS 18.0 software package was used to analyze the data. RESULTS: Osteogenic induction could promote phosphorylation of p38, inhibit phosphorylation of p38 and proliferation of MPMCs, down-regulate the expression of ALP, Runx2, OCN and OPN, thus weaken the ALP staining in MPMCs. CONCLUSIONS: p38 signal pathway regulates osteogenic differentiation of MPMCs in vitro.

Key words: p38, Maxillary primordium mesenchymal cells, Osteogenic differentiation

CLC Number:

R782

ZHAO Yi-song,ZHONG Hui-min,HE Zhi-wei,ZHANG Guo-liang,WU Jiang. p38 signal pathway regulates osteogenic differentiation of maxillary primordium mesenchymal cells[J]. Shanghai Journal of Stomatology, 2015, 24(1): 56-60.

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