Materials:通过与支架和结缔组织生长因子联合刺激血管生成促进成骨作用

2019-06-30 不详 网络

在骨再生中,存在一些重要的细胞生物学过程,例如矿化,细胞组织和分化。特别地,血管形成再生组织是细胞和组织存活的关键步骤。在这项研究中,为了制造仿生工程骨,包括血管网络,我们专注于结缔组织生长因子(CTGF),一种可以调节细胞外基质重塑的多功能蛋白。通过与CTGF和羟基磷灰石(HAp)陶瓷(2D)或磷灰石纤维支架(AFS,3D)结合,我们制造了生物活性材料。负载CTGF的HAp陶瓷可通过与整联蛋白的

在骨再生中,存在一些重要的细胞生物学过程,例如矿化,细胞组织和分化。特别地,血管形成再生组织是细胞和组织存活的关键步骤。在这项研究中,为了制造仿生工程骨,包括血管网络,我们专注于结缔组织生长因子(CTGF),一种可以调节细胞外基质重塑的多功能蛋白。

通过与CTGF和羟基磷灰石(HAp)陶瓷(2D)或磷灰石纤维支架(AFS,3D)结合,我们制造了生物活性材料。负载CTGF的HAp陶瓷可通过与整联蛋白的相互作用增强细胞附着并促进肌动蛋白细胞骨架重组。负载CTGF的HAp还通过整联蛋白介导的信号传导通路的激活来增强成骨细胞的分化。在共培养条件下,CTGF负载的AFS中的成骨细胞和内皮细胞都被CTGF刺激,并且每个细胞可以在体外和体内穿透支架的中心区域。直接的细胞-细胞相互作用也将改善骨形成中细胞的功能。

总之,这些结果表明,有效优化的支架和具有多功能的CTGF之间的偶联可以通过刺激血管生成提供更好的模拟天然骨。

原始出处:

Honda M, Hariya R, et al., Acceleration of Osteogenesis via Stimulation of Angiogenesis by Combination with Scaffold and Connective Tissue Growth Factor. Materials (Basel). 2019 Jun 27;12(13). pii: E2068. doi: 10.3390/ma12132068.

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    2019-07-02 zhaojie88
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