J Biomed Mater Res A:通过分子层沉积技术为上皮细胞构建生物相容性底物

2018-09-20 MedSci MedSci原创

奥斯陆大学化学系的Momtazi L和哈佛医学院眼科的Dartt DA近日在J Biomed Mater Res A发表了一篇重要的文章,他们通过分子层沉积技术为上皮细胞构建生物相容性底物。

奥斯陆大学化学系的Momtazi L和哈佛医学院眼科的Dartt DA近日在J Biomed Mater Res A发表了一篇重要的文章,他们通过分子层沉积技术为上皮细胞构建生物相容性底物。

在再生医学领域中,对可作为表面涂层的新型生物相容性材料需求很高。他们探索了用于构建表面涂层的分子层沉积(MLD)技术,并引入了一组由氨基酸、核酸碱基和生物相容性金属钛组成的新基质。

底物由四异丙醇钛(TTIP)与1-赖氨酸、甘氨酸、1-天冬氨酸、1-精氨酸、胸腺嘧啶、尿嘧啶和腺嘌呤组成,还包括基于氯化锆和对苯二甲酸等。通过原子层沉积制成氧化钛(TiO 2),未涂的盖玻片用作对照。使大鼠结膜上皮杯状细胞在RPMI 1640中生长,并通过RT-PCR、免疫荧光分析细胞附着、增殖和生存能力。

在MLD和未涂覆的底物上培养的细胞出现增殖(Ki67阳性)。在MLD底物上培养3小时后的细胞附着与未涂覆的盖玻片相似(p> 0.05)。4天后用alamarBlue测定细胞增殖,发现与未涂覆的盖玻片相比,所有MLD底物上显着升高(p <0.05),而含对苯二甲酸的MLD底物增殖明显下降(p <0.01)。在5天后,LIVE /DEAD评估的所有底物的活力都很高(> 85%)。因此,他们认为,新型MLD技术有望指导适应上皮细胞生长的生物相容性底物的构建。

原文出处:

Momtazi, L., et al., Molecular layer deposition builds biocompatible substrates for epithelial cells. J Biomed Mater Res A, 2018.

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    2018-10-26 sunylz
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    2018-09-20 医者仁心5538

    学习了

    0