摘要
利用HEK293细胞在悬浮培养体系中具有聚集成团的体外培养特性,在250ml的spinnerflask搅拌式细胞培养瓶中以悬浮细胞团的形式实施HEK293细胞的无载体固定化培养,以细胞密度、细胞活力、细胞团粒径分布和葡萄糖比消耗率(qglc)、乳酸比产率(qlac)、乳酸转化率(Ylac/glc)、氨基酸消耗为观察指标,同时设置静止培养体系作为参照,考察无载体固定化培养模式下的HEK293细胞生长和代谢特征。观察结果表明,HEK293细胞在搅拌式细胞培养瓶中无载体固定化培养和在组织培养瓶中静止贴壁培养表现为基本相同的细胞生长和代谢特征,平均粒径小于300μm的细胞团中的物质传递能够满足HEK293细胞维持正常生长和代谢的基本需要。HEK293细胞的无载体固定化培养便于实施灌注操作、提高生物反应器单位体积的生产效率。
By using the cell density, cell viability, size distribution of cell aggregates, specific consumption rate of glucose （ qglc ）, specific production rate of lactate （ q1ac ）, lactate transform rate （ Y1ac/glc ） and amino acids utilization as the evaluation indexes, the growth and metabolism of HEK293 cells under carrier-free immobilization culture mode were examined and compared with those of HEK293 cells cultured in static tissue flasks. It was found that HEK293 cells grown as suspended cell aggregates in spinner flasks maintained the basic growth and metabolism characteristics of HEK293 cells in stationary anchored culture, and HEK293 cells under carrier-free immobilization culture mode as suspended aggregates in stirred bioreactor facilitate perfusion performance and increase unit productivity. Cultivation of HEK293 cells in carrier-free immobilization culture mode has potential for further improving mammalian cells culture technique.
出处
《中国生物工程杂志》
CAS
CSCD
北大核心
2006年第2期20-24,共5页
China Biotechnology
基金
国家"863"计划资助项目(2004AA2Z3792)
