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首页> 外文期刊>Applied Microbiology and Biotechnology >The effect of oxidative stress on the production of the recombinant protein, interferon gamma, produced by Chinese hamster ovary cells in stirred-batch culture
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The effect of oxidative stress on the production of the recombinant protein, interferon gamma, produced by Chinese hamster ovary cells in stirred-batch culture

机译:氧化应激对中国仓鼠卵巢细胞分批培养产生重组蛋白γ干扰素的影响

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摘要

The CHO320 cell line, engineered to produce human interferon gamma was investigated with regard to its susceptibility to oxidative stress. Batch cultures of the cells grown in a bench-top bioreactor exhibited no marked response to changes in oxygen concentration between 6% and 14% whereas cell growth and recombinant protein production were inhibited by increasing the oxygen to 20%. High concentrations of hydrogen peroxide (in excess of 200 microM) were required to inhibit growth of the CHO320 cells whereas concentrations of 50 microns and 100 microM had no effect on recombinant protein production. Buthionine sulphoximine (50 microM and 100 microM) completely depleted the cells of glutathione within 24 h; however, no quantitative effect on recombinant protein production was seen. It is concluded that the CHO320 cells are, possibly as a consequence of the long selection process they have undergone, very resistant to oxidative stress.
机译:研究了工程化生产人干扰素γ的CHO320细胞系对氧化应激的敏感性。在台式生物反应器中生长的细胞的分批培养对氧浓度在6%和14%之间的变化没有明显的反应,而通过将氧增加到20%可以抑制细胞的生长和重组蛋白的产生。需要高浓度的过氧化氢(超过200 microM)来抑制CHO320细胞的生长,而50微米和100 microM的浓度对重组蛋白的生产没有影响。丁硫氨酸亚砜肟(50 microM和100 microM)在24小时内完全耗尽了谷胱甘肽的细胞。然而,没有观察到对重组蛋白生产的定量影响。结论是,CHO320细胞可能是由于经历了漫长的选择过程而对氧化应激具有极强的抵抗力。

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