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Metabolic responses and pathway changes of mammalian cells under different culture conditions with media supplementations

机译:媒体补充剂不同培养条件下哺乳动物细胞的代谢反应和途径变化

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Amino acids and glucose consumption, cell growth and monoclonal antibody (mAb) production in mammalian cell culture are key considerations during upstream process and particularly media optimization. Understanding the interrelations and the relevant cellular physiology will provide insight for setting strategy of robust and effective mAb production. The aim of this study was to further our understanding of nutrient consumption metabolism, since this could have significant impact on enhancing mAb titer, cell proliferation, designing feeding strategies, and development of feed media. The nutrient consumption pattern, mAb concentration, and cell growth were analyzed in three sets of cell cultures with media supplementation of glucose, methionine, threonine, tryptophan, and tyrosine. The amino acids metabolism and its impact on cell growth and mAb production during the batch and fed-batch culture were closely analyzed. It was shown that the phenylalanine, tyrosine and tryptophan biosynthesis pathways were significantly altered under different culture conditions with different media. These changes were more apparent in the fed-batch process in which higher mAb titer was observed due to the metabolic changes than mAb titer in the batch process. The pathway analysis approach was well utilized for evaluating the impact on the relevant pathways involved under different cell culture conditions to improve cell growth and mAb titer. (c) 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:793-805, 2018
机译:哺乳动物细胞培养中的氨基酸和葡萄糖消耗,细胞生长和单克隆抗体(MAB)生产是在上游过程中的关键考虑因素,特别是介质优化。了解相互关系和相关的细胞生理学将为强大且有效的MAB生产策略提供洞察力。本研究的目的是进一步了解营养消费代谢的理解,因为这可能对提高MAB滴度,细胞增殖,设计饲养策略以及饲料介质的发展产生重大影响。用培养葡萄糖,蛋氨酸,苏氨酸,色氨酸和酪氨酸的培养物补充,分析了营养消耗模式,MAB浓度和细胞生长。氨基酸代谢及其对分批和补料分批培养过程中对细胞生长和MAB产生的影响。结果表明,在不同培养基的不同培养条件下显着改变苯丙氨酸,酪氨酸和色氨酸生物合成途径。在补料批处理过程中,这些变化更加明显,其中由于批处理过程中的代谢变化而观察到较高的mAb滴度。途径分析方法很好地用于评估对不同细胞培养条件下涉及的相关途径的影响,以改善细胞生长和MAB滴度。 (c)2018美国化学工程师学院Biotechnol。 Prog。,34:793-805,2018

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