Protein Expression via Transient Transfection of Mammalian Cells in a WAVE Bioreactor

: Large culture volumes are often required when expression constructs are particularly low-yielding or when end-uses require significant amounts of material. In these cases, a single homogenous culture is usually more convenient, in terms of both consistency of expression and labour/resource requirements, than multiple parallel cultures. Using a WAVE Bioreactor culture volumes as high as 500 L may be achieved in a single vessel. Here we describe the transfection of 293-6E cells in a disposable 50 L Cellbag on a WAVE Bioreactor platform to produce recombinant protein. The methods described herein may be adapted, with suitable optimizations, for other suspension-adapted mammalian cell lines.