大鼠肝细胞球形体低温保存条件的初步探索
发布时间:2018-12-06 13:27
【摘要】:目的探索有效的肝细胞球形体低温保存方法,促进生物人工肝及其他研究的应用。方法采用两步法分离大鼠肝细胞,经无血清培养基(SFM)摇摆培养48h形成肝细胞球形体。将球形体继续培养(对照组),或置于4℃SFM,SFM+1mmol/L去铁胺(Def),SFM+1μmol/L环孢霉素A(Cs A),SFM+1mmol/L Def+1μmol/L Cs A保存液中24h或48h,继续培养4d或5d后观察低温保存后肝细胞球形体的存活率、超微结构变化,以及白蛋白和尿素合成情况。结果Def和Cs A能很好地保护球形体肝细胞,在4℃SFM+Def+Cs A保存液中保存24h,肝细胞球形体功能、结构等变化及尿素合成水平与对照组比较差异无统计学意义,而单独放在SFM中进行低温保存后,细胞活性明显下降。在4℃保存48h后,球形体肝细胞超微结构发生明显变化,死亡细胞增多,但SFM+Def+Cs A组和SFM+Def组细胞结构优于SFM组和SFM+Cs A组,细胞存活率及尿素合成水平明显高于后两组(P0.05),但合成白蛋白量均处于较低水平,各组间差异无统计学意义(P0.05)。结论低温状态下肝细胞球形体可保持良好的存活率和功能24h,低温保存能为细胞治疗提供良好的细胞材料。
[Abstract]:Objective to explore an effective method for cryopreservation of hepatocyte spheroids and to promote the application of bioartificial liver and other research. Methods Rat hepatocytes were isolated by two-step method and cultured on serum-free medium (SFM) for 48 h. The spheroids were cultured continuously (control group), or in 4 鈩,
本文编号:2366098
[Abstract]:Objective to explore an effective method for cryopreservation of hepatocyte spheroids and to promote the application of bioartificial liver and other research. Methods Rat hepatocytes were isolated by two-step method and cultured on serum-free medium (SFM) for 48 h. The spheroids were cultured continuously (control group), or in 4 鈩,
本文编号:2366098
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