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Three-dimensional liver cell cultures enhance urea synthesis and drug metabolism

机译:三维肝细胞培养可增强尿素合成和药物代谢

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Tissue engineering within three-dimensional scaffolds represents a developing field with the potential to create in vitro livers. Human liver cells, HepG2, respond to cues in their immediate microenvironment by modulating cell functions including cell proliferation, urea synthesis and drug metabolism. The importance of three-dimensional environments draws from the fact that it has been extensively used for guided tissue regeneration. HepG2 cells grown in traditional two-dimensional supports were compared to three-dimensional cultures in polystyrene scaffolds. The 5-day experimental study examined the effects of the different environments on HepG2 cell urea synthesis using a quantitative colorimetric assay and drug metabolism-specific function using the cytochrome P450 monooxygenase substrate, 7-ethoxy-4-trifluoromethyl-coumarin. The function of liver cells grown on three-dimensional scaffolds was enhanced compared to the activity of cells grown on two-dimensional supports. The results suggest that HepG2 liver cell function in three-dimensional environments more closely mimic physiological responses than existing two-dimensional culture systems.
机译:三维支架内的组织工程学代表着一个发展中的领域,具有创造体外肝脏的潜力。人肝细胞HepG2通过调节细胞功能(包括细胞增殖,尿素合成和药物代谢)来响应其直接微环境中的信号。三维环境的重要性来自以下事实:它已被广泛用于引导组织再生。将传统二维支持物中生长的HepG2细胞与聚苯乙烯支架中的三维培养物进行了比较。这项为期5天的实验研究使用定量比色测定法和使用细胞色素P450单加氧酶底物7-乙氧基-4-三氟甲基香豆素的药物代谢特异性功能,研究了不同环境对HepG2细胞尿素合成的影响。与在二维支架上生长的细胞的活性相比,在三维支架上生长的肝细胞的功能得到增强。结果表明,与现有的二维培养系统相比,三维环境中的HepG2肝细胞功能更接近于模仿生理反应。

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