PUBLICATION Mammalian Cell Designers’ Laboratory

MISSION

Our mission is to engineer next-generation mammalian cell factories
for the production of complex biotherapeutics.
By integrating synthetic biology, genome engineering, and autonomous experimentation,
we aim to transform cell line development from empirical optimization into a predictive engineering discipline.

Journal Articles

Autophagy and its implication in Chinese hamster ovary cell culture
Author
Yeon Jung Kim*, Eric Baek, Jae Seong Lee, Gyun Min Lee‡
Journal
Biotechnology Letters
Vol
35(11)
Page
1753-1763
Year
2017~

Chinese hamster ovary (CHO) cells, that are widely used for production of therapeutic proteins, are subjected to apoptosis and autophagy under the stresses induced by conditions such as nutrient deprivation, hyperosmolality and addition of sodium butyrate. To achieve a cost-effective level of production, it is important to extend the culture longevity. Until now, there have been numerous studies in which apoptosis of recombinant CHO (rCHO) cells was inhibited, resulting in enhanced production of therapeutic proteins. Recently, autophagy in rCHO cells has drawn attention because it can be genetically and chemically controlled to increase cell survival and productivity. Autophagy is a global catabolic process which involves multiple pathways and genes that regulate the lysosomal degradation of intracellular components. A simultaneous targeting of anti-apoptosis and pro-autophagy could lead to more efficient protection of cells from stressful culture conditions. In this regard, it is worthwhile to have a detailed understanding of the autophagic pathway, in order to select appropriate genes and chemical targets to manage autophagy in rCHO cells, and thus to enhance the production of therapeutic proteins.