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- W2531502708 abstract "Abstract Objectives Low concentrations of tumour necrosis factor‐alpha ( TNF ‐α) have been reported to promote osteogenic differentiation. In this study, a series of in vitro experiments was performed to investigate underlying molecular mechanisms involved. Materials and methods MC 3T3‐E1 murine preosteoblasts were treated with TNF ‐α at doses of 0, 0.1 or 1 ng/mL. The ephrinB2‐EphB4 signalling pathway was activated using ephrinB2‐fc, or inhibited using lentiviruses encoding si RNA s specifically targeting EphB4. Cell proliferation/survival was evaluated using the Cell Counting Kit‐8 ( CCK ‐8) assay, and expression levels of Runx2, BSP , ephrinB2 and EphB4 were determined using RT ‐ PCR and Western blotting. ALP activity in these cells was also determined, and mineral nodule formation was evaluated with alizarin red S staining. Results Low concentrations of TNF ‐α had no influence on cell proliferation/survival. However, expression levels of Runx2, BSP , ephrinB2 and EphB4, as well as ALP activity and mineral nodule formation, were significantly enhanced in MC 3T3‐E1 cells treated with low concentrations of TNF ‐α. Moreover, activation of the ephrinB2‐EphB4 signalling pathway by ephrinB2‐fc enhanced TNF ‐α‐induced osteogenic differentiation, while down‐regulation of EphB4 level reversed the positive effect of TNF ‐α. Conclusions Low concentrations of TNF ‐α promoted osteogenic differentiation via activation of the ephrinB2‐EphB4 signalling pathway." @default.
- W2531502708 created "2016-10-21" @default.
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- W2531502708 date "2016-10-11" @default.
- W2531502708 modified "2023-10-16" @default.
- W2531502708 title "Low concentrations of <scp>TNF</scp>‐α promote osteogenic differentiation <i>via</i> activation of the ephrinB2‐EphB4 signalling pathway" @default.
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- W2531502708 doi "https://doi.org/10.1111/cpr.12311" @default.
- W2531502708 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6529098" @default.
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