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首页> 外文期刊>Journal of Cellular Physiology >Heterotypic interactions in the preservation of morphology and functionality of porcine hepatocytes by bone marrow mesenchymal stem cells in vitro.
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Heterotypic interactions in the preservation of morphology and functionality of porcine hepatocytes by bone marrow mesenchymal stem cells in vitro.

机译:异形的交互的保护猪的形态和功能肝细胞由骨髓间充质干细胞体外。

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摘要

Temporary replacement of specific liver functions with extracorporeal bioartificial liver has been hampered by rapid de-differentiation of porcine hepatocytes in vitro. Co-cultivation of hepatocytes with non-parenchymal cells may be beneficial for optimizing cell functions via mimicry of physiological microenvironment consisting of endogenous matrix proteins. However, the underlying mechanisms remain to be elucidated. A randomly distributed co-culture system composed of porcine hepatocytes and bone marrow mesenchymal stem cells was generated, and the morphological and functional changes of varying degrees of heterotypic interactions were characterized. Furthermore, contributions of extracellular matrix within this co-culture were evaluated. A rapid attachment and self-organization of three-dimensional hepatocyte spheroids were encouraged. Studies on hepatocyte viability showed a metabolically active, viable cell population in all co-culture configurations with occurrence of few dead cells. The maximal induction of albumin production, urea synthesis, and cytochrome P4503A1 activities was achieved at seeding ratio of 2:1. Immunocytochemical detection of various extracellular matrix confirmed that a high level of matrix proteins synthesis within distinct cells was involved in hepatocyte homeostasis. These results demonstrate for the first time that cell-matrix has synergic effects on the preservation of hepatic morphology and functionality in the co-culture of porcine hepatocytes with mesenchymal stem cells in vitro, which could represent a promising tool for tissue engineering, cell biology, and bioartificial liver devices.
机译:临时替换特定的肝脏功能体外人工肝受到快速de-differentiation猪肝细胞在体外。肝细胞与non-parenchymal细胞有利于优化细胞功能通过模仿生理的微环境内源性矩阵组成的蛋白质。然而,潜在的机制仍有待阐明。系统由猪的肝细胞和骨头骨髓间充质干细胞生成,的形态和功能变化不同程度的异形的交互为特征。在这个共培养细胞外基质评估。自组织的三维肝细胞被鼓励球状体。生存能力表现出新陈代谢活跃,可行在所有共培养细胞群配置发生的一些死细胞。白蛋白生产的感应,尿素合成,和细胞色素P4503A1活动得以实现播种2:1的比例。检测各种细胞外基质证实,高水平的矩阵的蛋白质参与合成在不同的细胞肝细胞内稳态。第一次cell-matrix协同对保护肝脏形态学的影响和功能共培养的猪肝细胞与间充质干细胞在体外,这可能代表一个有前途的工具,组织工程、细胞生物学和人工肝脏的设备。

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