J Mol Histol:下颌骨和股骨成骨细胞的成骨和血管生成特征

2019-02-02 MedSci MedSci原创

颅面自体骨移植物在重建颌面部骨缺损方面对长骨移植物提供了优异的结果,但是机制尚未清楚。成骨细胞在骨骼发育和再生中起着至关重要的作用。然而,目前,只有少数研究比较了来自颅面和长骨的成骨细胞的成骨能力,且结果之间存在矛盾。另外,来自这些不同骨骼的成骨细胞的血管生成特征仍然未知。我们从大鼠下颌骨(MOBs)和股骨(FOBs)获得成骨细胞以研究它们的增殖能力和成骨潜力,并且使用与人脐静脉内皮细胞(HUVE

颅面自体骨移植物在重建颌面部骨缺损方面对长骨移植物提供了优异的结果,但是机制尚未清楚。成骨细胞在骨骼发育和再生中起着至关重要的作用。然而,目前,只有少数研究比较了来自颅面和长骨的成骨细胞的成骨能力,且结果之间存在矛盾。另外,来自这些不同骨骼的成骨细胞的血管生成特征仍然未知。

我们从大鼠下颌骨(MOBs)和股骨(FOBs)获得成骨细胞以研究它们的增殖能力和成骨潜力,并且使用与人脐静脉内皮细胞(HUVEC)的共培养系统,我们在体外探索了它们的血管生成能力。FOB表现出较高的碱性磷酸酶活性和增加的基质矿化,并表达更多的成骨相关标记基因,而MOB以最高速率增殖并且表现出血管生成相关因子的升高的表达。来自MOB的条件培养基增强了HUVEC中血管生成相关因子的表达。此外,由MOB产生的条件培养基在HUVEC中显示出更强的促进增殖,迁移和管状结构形成,表明MOB对HUVEC的促血管生成作用比FOB更强。

总之,这些结果表明成骨细胞在成骨和血管生成能力方面具有骨骼位点特异性差异,有助于理解来自不同骨实体的骨细胞对颌面骨重建的分子影响。

原始出处:

Yang X, Jiang J, et al., Osteogenic and angiogenic characterization of mandible and femur osteoblasts. J Mol Histol. 2019 Jan 11. doi: 10.1007/s10735-019-09810-6. 

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    2019-12-20 xlysu
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    2019-07-13 yuanming17
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    2019-02-04 zhaojie88
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    2019-02-04 珙桐
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