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Co-culture of the 55-6 B cell hybridoma with the EL-4 thymoma cell. Effect on cell growth and monoclonal antibody production

AutorMartín-López, Alicia; Acosta, Lourdes ; García-Camacho, Francisco; Contreras-Gómez, Antonio; Molina-Grima, Emilio
Palabras claveHybridoma
Growth rate
Fecha de publicación14-jun-2013
EditorKluwer Academic Publishers
CitaciónCytotechnology 65: 655- 662 (2013)
ResumenThe cell growth and monoclonal antibody production of the 55-6 hybridoma cell co-cultured with the murine thymoma cell line EL-4 at different initial 55-6:EL-4 ratios were investigated. Both populations were seeded in co-culture without previous stimulation and therefore with low constitutive CD40 and CD40 ligand (CD154) expression levels, and in the absence of exogenous co-stimuli. Viable cell density and growth rate data seem to suggest a competition for nutrients, which is detrimental for both cells in terms of biomass production and also of growth rate for 55-6. Final concentrations of antibody and specific antibody production rates were affected by the initial 55-6:EL-4 ratio. The 4:1 ratio yielded the highest IgG2a concentration, whereas the highest specific antibody production rate was obtained at the 2:1 ratio. Changes mainly in CD154 and also in CD40 expression in co-cultures could suggest cross-talk between both populations. In conclusion, different types of interactions are probably present in this co-culture system: competition for nutrients, cognate interaction and/or autocrine or paracrine interactions that influence the proliferation of both cells and the hybridoma antibody secretion. We are hereby presenting a pre-scale-up process that could speed up the optimization of large-scale monoclonal antibodies production in bioreactors by emulating the in vivo cell-cell interaction between B and T cells without previous stimulation or the addition of co-stimulatory molecules. © 2013 Springer Science+Business Media Dordrecht
Versión del editorhttp://dx.doi.org/10.1007/s10616-013-9593-z
Identificadoresdoi: 10.1007/s10616-013-9593-z
issn: 0920-9069
e-issn: 1573-0778
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