Acta Biomater:干细胞来源的细胞外基质可抑制破骨细胞的生成

2018-03-13 MedSci MedSci原创

由于促进间充质干细胞(MSCs)骨生成的作用,脱细胞化的细胞外基质(ECM)已被证明是一种有前景的骨再生生物材料。然而,骨再生也受到骨吸收的影响,关于细胞衍生的ECM对破骨细胞分化的影响知之甚少。在这项研究中,研究人员将ECM沉积在MSCs上,脱细胞后,与标准组织培养聚苯乙烯相比,研究了ECM对骨髓单核细胞(BMMs)破骨细胞生成的影响。结果表明,细胞衍生的ECM改善BMMs增殖,但会明显抑制破骨

由于促进间充质干细胞(MSCs)骨生成的作用,脱细胞化的细胞外基质(ECM)已被证明是一种有前景的骨再生生物材料。然而,骨再生也受到骨吸收的影响,关于细胞衍生的ECM对破骨细胞分化的影响知之甚少。在这项研究中,研究人员将ECM沉积在MSCs上,脱细胞后,与标准组织培养聚苯乙烯相比,研究了ECM对骨髓单核细胞(BMMs)破骨细胞生成的影响。

结果表明,细胞衍生的ECM改善BMMs增殖,但会明显抑制破骨细胞分化,通过下调多核酒石酸耐受性酸性磷酸酶(TRAP)阳性细胞,肌动蛋白环区域和破骨细胞特异性基因表达来证明。ECM介导的细胞内活性氧(ROS)的减弱被认为在抑制破骨细胞生成中发挥了竞争性作用,因为外源性过氧化氢补充部分地拯救了ECM抑制的破骨细胞生成。此外,ECM中的纤连蛋白,而非I型胶原,促进了ECM介导的抗破骨细胞生成。

总之,干细胞来源的脱细胞ECM通过减弱细胞内ROS明显抑制破骨细胞生成。ECM的抗破骨细胞特性可能有助于其调节骨重建和促进骨组织工程的临床应用。

原始出处:

Li M, Chen X, et al., Inhibition of osteoclastogenesis by stem cell-derived extracellular matrix through modulating the intracellular reactive oxygen species. Acta Biomater. 2018 Mar 8. pii: S1742-7061(18)30123-5. doi: 10.1016/j.actbio.2018.03.003. [Epub ahead of print]

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    2018-12-02 sunylz
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    2018-07-10 windight
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