J Periodontal Res:一种新型的促进成纤维细胞迁移的细胞胶原基膜

2018-10-01 MedSci MedSci原创

生长因子经常被加入支架中用以促进牙周再生,但是许多目前使用的支架不支持细胞向龈牙结合处迁移。本实验检测了人牙龈成纤维细胞在载有纤连蛋白(FN)和/或胰岛素样生长因子(IGF-I)的新型,物理稳定的胶原-Vicryl TM膜中的增殖和迁移。并在大鼠背部皮肤中评估膜的生物相容性。

生长因子经常被加入支架中用以促进牙周再生,但是许多目前使用的支架不支持细胞向龈牙结合处迁移。本实验检测了人牙龈成纤维细胞在载有纤连蛋白(FN)和/或胰岛素样生长因子(IGF-I)的新型,物理稳定的胶原-Vicryl TM膜中的增殖和迁移。并在大鼠背部皮肤中评估膜的生物相容性。

方法:通过膜的共聚焦成像检查Boyden室中的趋化性和细胞迁移,膜嵌入鼠尾I型胶原,Vicryl,IGF-I(50,100ng / mL)和FN(10μg/ mL)制成。将膜(单独的Vicryl,胶原+ Vicryl,胶原+ Vicryl + IGF-I,胶原+ Vicryl + FN)皮下植入8只大鼠中,并在7和14天后进行组织形态学评估。

结果:与空白载体对照相比,IGF-I(50或100ng / mL)促进趋化性(分别为P = .02,P = .001)。 IGF-I不影响细胞增殖。 FN的加入延迟了IGF-I从胶原凝胶中的时间依赖性释放。在第8天,第10天和第14天的三维共聚焦显微镜成像显示,与其他组相比,IGF + FN组通过胶原+ Vicryl膜的细胞迁移力增强(P <.05)。在大鼠皮肤模型中,植入的膜周围有薄的胶原胶囊和轻度炎性浸润物。

将FN加入载有IGF-I的胶原+ Vicryl膜中,减少了IGF从胶原中的释放并增加了人牙龈成纤维细胞的迁移。新膜可以促进齿龈交界处的愈合和重新形成。

原始出处:

R. Sadeghi, et al.A novel, cell‐permeable, collagen‐based membrane promotes fibroblast migration. Journal of  Periodontal Research. 2018 October. Doi:10.1111/jre.12557

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    2019-02-16 feather89
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    2018-10-08 wxl882001

    了解一下

    0

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