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Kawahara, M. et al.

Replacing factor-dependency with that for lysozyme: affordable culture of IL-6-dependent hybridoma by transfecting artificial cell surface receptor.

Cytokines and growth factors are indispensable for the propagation and maintenance of factor-dependent mammalian cells. However, cytokines are often so expensive that the use of factor-dependent cells for industrial applications such as protein production is often not practical. Based on our previous design of a binary hen egg lysozyme (HEL)-specific receptor composed of portions of the anti-HEL antibody and the erythropoietin receptor, a new pair of chimeric receptors having the intracellular domain of gp130 were made and transfected to an interleukin-6 (IL-6)-dependent hybridoma, 7TD1. The clone expressing the two new receptors showed clear HEL dose-dependent cell growth and monoclonal antibody production in both serum-based and serum-free media without IL-6. These results establish the feasibility of applying receptor design to tailor cells for the inexpensive induction of cell growth for the purpose of producing therapeutic products.[1]

References

Replacing factor-dependency with that for lysozyme: affordable culture of IL-6-dependent hybridoma by transfecting artificial cell surface receptor. Kawahara, M., Natsume, A., Terada, S., Kato, K., Tsumoto, K., Kumagai, I., Miki, M., Mahoney, W., Ueda, H., Nagamune, T. Biotechnol. Bioeng. (2001) [Pubmed]

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