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Cell Death Dis:研究揭示骨折愈合过程中的关键调节剂

2020-02-13 不详 网络

成骨的调节对于骨形成和骨折愈合很重要。尽管目前在了解成骨的分子机制方面取得了进展,但在此过程中关键的调节剂尚未很好地表征。本研究中,我们证明抑制信号转导和转录激活因子5A(STAT5A)在人骨髓源性基质细胞(hBMSCs)中激活了远侧同源盒5(DLX5),并增强了体内和体外的成骨作用。结果表明,STAT5A负调节体外Dlx5的表达,并且STAT5A缺失导致小鼠小梁和皮质骨量以及骨矿物质密度增加。

成骨的调节对于骨形成和骨折愈合很重要。尽管目前在了解成骨的分子机制方面取得了进展,但在此过程中关键的调节剂尚未很好地表征。本研究中,我们证明抑制信号转导和转录激活因子5A(STAT5A)在人骨髓源性基质细胞(hBMSCs)中激活了远侧同源盒5(DLX5),并增强了体内和体外的成骨作用。

结果表明,STAT5A负调节体外Dlx5的表达,并且STAT5A缺失导致小鼠小梁和皮质骨量以及骨矿物质密度增加。 此外,STAT5A缺失可防止与年龄有关的骨质流失。 在鼠骨折模型中,发现STAT5A缺失通过刺激骨折愈伤组织的形成显着增强了骨骼重塑。

综上所述,该研究结果表明,STAT5A抑制通过促进BMSC的成骨作用来增强骨形成。

原始出处:

Kyoung-Mi Lee, Kwang Hwan Park, et al., Inhibition of STAT5A promotes osteogenesis by DLX5 regulation. Cell Death Dis. 2018 Nov; 9(11): 1136.

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    2020-10-26 维他命
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    2020-02-15 cy0328
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