用胸腺嘧啶核苷双阻断法实现Vero细胞的同步化生长

Synchronous Growth of Vero Cells with Double Thymidine Block

研究了胸腺嘧啶核苷(TdR)双阻断法同步化Vero细胞的最适条件，包括TdR处理浓度、TdR处理时间和两次阻断间的恢复生长时间. 结果表明，在指数生长前期的细胞，用2 mmol/L的TdR阻断细胞生长11 h，恢复生长14 h，再用2 mmol/L的TdR阻断11 h，所得Vero细胞的同步化程度最高. 用该方法分别处理在方瓶中贴壁生长的Vero细胞和旋转培养瓶中用Cytodex(3培养的Vero细胞，其同步化指数分别为65.0%和60.0%.

The optimum conditions of synchronous growth of Vero cells with double thymidine (TdR) block were investigated, including the concentration of TdR, treatment time and recovery time. The proper operation procedure is as follows: exponentially growing Vero cells were arrested with 2 mmol/L TdR for 11 h, cultured in normal medium for 14 h and arrested with TdR for another 11 h. In this way, the Synchronous Index (SI) reached 65.0% for the Vero cells culture in bottles and 60.0% for Vero cells growing on Cytodex-3 microcarriers in spinner flasks.