提高新生大鼠原代心肌细胞纯度方法的探讨

目的:探讨提高新生大鼠原代心肌细胞纯度的方法。方法:应用0.08%心肌细胞消化液重复消化出生第1-3天乳鼠的心肌组织多次;收集的细胞用含10%胎牛血清的DMEM培养基中和。用差速贴壁分离法分离后,加入红细胞裂解液,以除去红细胞,加入溴脱氧尿嘧啶(Brdu)纯化心肌细胞后置CO2培养箱孵育2天,无血清同步化1天。结果:分离1只乳鼠获得的心肌细胞产量约为1.2×106个,有活力心肌细胞占90%以上,心肌细胞纯度>90%,3-4天后心肌细胞融合成片,并出现自发性节律性搏动。结论:该方法在保证心肌细胞产量和心肌细胞活性的同时,能大幅度提高心肌细胞纯度。

Discussion on Improving Purity of Primary Myocardial Cells from Neonatal Rats

This study was aimed to explore the method to improve the purity of primary myocardial cells from neonatal rats. The myocardial tissues of rats which were born 1-3 days were repeated digested by 0.08% myocardial cells digestive juices. And then, cells were neutralized with DMEM medium which containing 10% fetal bovine serum. The cells were separated with differential sidewall ion. The red blood cell cracking liquid was added to remove the red blood cells. Bromine deoxidization uracil (Brdu) was added to purify the myocardial cells. Then, cells were incubated in the CO₂ incubator for two days. The serum-free synchronization was performed for one day. The results showed that the output of myocardial cells from one rat was about 1.2 × 10⁶. The dynamic myocardial cells occupied more than 90%. The purity of myocardial cells was more than 90%. After 3 to 4 days, the cell fusion of myocardial cells was formed with spontaneous rhythm beats. It was concluded that the method can ensure the yield and the activity of the myocardial cells. At the same time, the purity of myocardial cells can also be improved greatly.