J Biomed Mater Res B Appl Biomater:适合骨增强的骨移植物

2019-09-03 不详 网络

缺乏有助于骨增强合适的骨移植物。本研究旨在将人类脂肪干细胞(hASCs)的成骨分化和与嵌入三维(3D)结冷胶(GG)和I型胶原(COL)水凝胶混合物的人脐静脉内皮细胞(HUVEC)共培养的微血管形成。我们比较了内皮生长培养基-2(EGM-2)和基于生物活性玻璃提取物的内皮细胞和成骨培养基(BaG EM-OM),用于体外血管化骨样移植物的发育。分析细胞活力,细胞数和成骨和内皮基因表达。对矿化的羟基磷

缺乏有助于骨增强合适的骨移植物。本研究旨在将人类脂肪干细胞(hASCs)的成骨分化和与嵌入三维(3D)结冷胶(GG)和I型胶原(COL)水凝胶混合物的人脐静脉内皮细胞(HUVEC)共培养的微血管形成。我们比较了内皮生长培养基-2(EGM-2)和基于生物活性玻璃提取物的内皮细胞和成骨培养基(BaG EM-OM),用于体外血管化骨样移植物的发育。

分析细胞活力,细胞数和成骨和内皮基因表达。对矿化的羟基磷灰石残留物,内皮标记物CD31产生的免疫细胞化学染色和晚期成骨标记物骨钙蛋白进行成像。使用两种培养基,在3D水凝胶内观察到良好的细胞活力。与7天和14天的BaG EM-OM条件相比,EGM-2条件诱导明显更高的细胞数。有趣的是,两种培养基均支持成骨和内皮标记基因表达。此外,在EGM-2和BaG EM-OM条件下均观察到网状细胞结构的形成。然而,仅在BaG EM-OM条件下检测到羟基磷灰石矿化和强骨钙素染色。重要的是,单独的EGM-2培养物中CD31和细长管状结构的强烈产生明显。

总之,我们证明了与HUVEC共培养中有效的hASC成骨分化和微血管样网络形成。

原始出处:

Vuornos K, Huhtala H, et al., Bioactive glass ions for in vitro osteogenesis and microvascularization in gellan gum-collagen hydrogels. J Biomed Mater Res B Appl Biomater. 2019 Aug 31. doi: 10.1002/jbm.b.34482.

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    2019-11-29 xuyong535
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    2020-07-05 howi
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    2020-07-16 sunylz
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