Your browser doesn't support javascript.

Biblioteca Virtual em Saúde


Home > Pesquisa > ()
Imprimir Exportar

Formato de exportação:


Adicionar mais destinatários
| |

ELP2 negatively regulates osteoblastic differentiation impaired by tumor necrosis factor α in MC3T3-E1 cells through STAT3 activation.

Xu, Chang-Peng; Sun, Hong-Tao; Yang, Ya-Jun; Cui, Zhuang; Wang, Jian; Yu, Bin; Wang, Fa-Zheng; Yang, Qing-Po; Qi, Yong.
J Cell Physiol; 234(10): 18075-18085, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30847950
Tumor necrosis factor-α (TNF-α) is a pluripotent signaling molecule. The biological effect of TNF-α includes slowing down osteogenic differentiation, which can lead to bone dysplasia in long-term inflammatory microenvironments. Signal transducer and activator of transcription 3 (STAT3)-interacting protein 1 (StIP1, also known as elongator complex protein 2, ELP2) play a role in inhibiting TNF-α-induced osteoblast differentiation. In the present study, we investigated whether and how ELP2 activation mediates the effects of TNF-α on osteoblastic differentiation. Using in vitro cell cultures of preosteoblastic MC3T3-E1 cells, we found that TNF-α inhibited osteoblastic differentiation accompanied by an increase in ELP2 expression and STAT3 activation. Forced ELP2 expression inhibited osteogenic differentiation of MC3T3-E1 cells, with a decrease in the expression of osteoblast marker genes, alkaline phosphatase activity, and matrix mineralization capacity. In contrast, ELP2 silencing ameliorated osteogenic differentiation in MC3T3-E1 cells, even after TNF-α stimulation. The TNF-α-induced inhibitory effect on osteoblastic differentiation was therefore mediated by ELP2, which was associated with Janus kinase 2 (JAK2)/STAT3 activation. These results suggest that ELP2 is upregulated at the differentiation of MC3T3-E1 cells into osteoblasts and inhibits osteogenic differentiation in response to TNF-α through STAT3 activation.
Selo DaSilva