J Tissue Eng Regen Med:β磷酸三钙陶瓷通过人间充质干细胞触发快速而稳健的骨形成

2019-03-14 不详 网络

由于其骨传导性和诱导性,各种磷酸钙(CaP)支架通常用于整形外科中的移植材料来治愈骨缺损。在这项研究中,我们制备了两种具有不同羟基磷灰石(HA)和β-磷酸三钙(β-TCP)比例(MBCP®; 60/40和MBCP +; 20/80)的CaP支架,以研究其内在促人骨髓干细胞(hBMSC)成骨分化的能力。结果显示,体外培养模型中,与MBCP®相比,MBCP +®显示出更高的钙离子释放速率。在两个确定的

由于其骨传导性和诱导性,各种磷酸钙(CaP)支架通常用于整形外科中的移植材料来治愈骨缺损。在这项研究中,我们制备了两种具有不同羟基磷灰石(HA)和β-磷酸三钙(β-TCP)比例(MBCP®; 60/40和MBCP +; 20/80)的CaP支架,以研究其内在促人骨髓干细胞(hBMSC)成骨分化的能力。

结果显示,体外培养模型中,与MBCP®相比,MBCP +®显示出更高的钙离子释放速率。在两个确定的共培养系统中,与接种到MBCP®上的hBMSC相比,接种到MBCP +上的hBMSC VEGF分泌量增加,导致内皮细胞增殖和毛细血管形成增强。当两种陶瓷结合hBMSC植入裸鼠时,我们观察到MBCP +内出现更快的成骨分化和成熟骨沉积。在接种的hBMSC表面上钙敏感受体蛋白(CaSr)活化高度阳性的样品中观察到骨形成,其也显示出更高的BMP-2蛋白表达。

总之,该研究为hBMSC可能的骨化和血管生成机制提供了宝贵的见解,我们认为这些机制是由CaP支架释放的钙离子引发的。该研究结果可以为陶瓷支架的优化提供信息以促进骨修复。

原始出处:

Pereira RC, Benelli R, et al., Beta tricalcium phosphate ceramic triggers fast and robust bone formation by human mesenchymal stem cells. J Tissue Eng Regen Med. 2019 Feb 27. doi: 10.1002/term.2848.

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    2019-10-02 spoonycyy
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    2019-06-14 redcrab
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    2020-01-21 xuyu
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