PHYSIOLOGICAL AND ENVIRONMENTAL-FACTORS AFFECTING THE GROWTH OF INSECT CELLS AND INFECTION WITH BACULOVIRUS

被引:56
作者
KIOUKIA, N [1 ]
NIENOW, AW [1 ]
EMERY, AN [1 ]
ALRUBEAI, M [1 ]
机构
[1] UNIV BIRMINGHAM, SCH CHEM ENGN, BBSRC CTR BIOCHEM ENGN, BIRMINGHAM B15 2TT, W MIDLANDS, ENGLAND
关键词
INSECT CELL; BACULOVIRUS; BETA-GALACTOSIDASE; BATCH CULTURE; CELL CYCLE; DISSOLVED O-2;
D O I
10.1016/0168-1656(94)00128-Y
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Insect cell growth can be significantly improved by close attention to the conditions used in the inoculum stages. Initial cell concentration, spent medium carry over and inoculum phase withdrawal significantly influenced the growth kinetics of Spodoptera frugiperda (Sf9) cells. The percentage of cells infected with wild and recombinant baculovirus AcNPV and (in the later case) the beta-galactosidase yield in fresh medium was appreciably affected by the stage of the growth curve that cells were in when infected and by the multiplicity of infection (MOI). However, the cell density at the time of infection and the medium condition showed little direct influence on infectivity. There may, however, be an indirect influence in that these factors determine the relative distribution of cells in the cell cycle. The infectivity is then in turn affected by the relative frequency of cells in the G1, S and G2/M phases. Insect cell specific oxygen uptake rates (1.3-3.4 x 10(-17) mol per cell per s) were essentially similar to or less than those measured for hybridoma cells. However, when Sf9 cells were infected with baculovirus, the specific oxygen uptake rate increased by up to 40%.
引用
收藏
页码:243 / 251
页数:9
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