知识与财富的链接
目的建立一种稳定的能获得高活力和高纯度原代小鼠肝细胞的分离和纯化方法。方法对传统的两步原位胶原酶灌注法进行4个方面的优化,主要包括选择逆向灌流、将持续灌注法改为间断灌注后夹闭门静脉法、严格控制胶原酶消化时间和将分离的肝细胞悬液进行低速Percoll单密度离心纯化。分离后的肝细胞进行体外培养。肝细胞活力和得率用台盼蓝染色法检测。结果新鲜分离的小鼠原代肝细胞活力能稳定达到87%±3%,平均活细胞总数为8×105每克小鼠体重,绝大部分细胞在体外培养2h后贴壁生长。结论优化后的肝细胞分离方法更为稳定、有效,分离到的肝细胞具有高活力的优点。
Objective To develop a consistent method for the isolation of primary mouse hepatocytes with high-viability.Methods The conventional two-step collagenase perfusion technique was modified in the following 4 steps,including retrograde perfusion,intermittent perfution followed by occlusion of portal vein,optimization of enzymatic digestion,and purification using a low-speed,iso-density percoll centrifugation.Following isolation,the cells were maintained in a culture medium.The cell viability and yield were det...
