In the scale-up process, we used the criterion of maintaining a constant power-to-volume ratio (P/V). We also employed computational fluid dynamics (CFD) methods to assist in this endeavor. The first set of experiments was conducted on the Ambr250 system and aimed to find the combination of bioprocess parameters that best influenced cell growth, product quality, and titer. The second set of experiments took place on the BioBLU 3c system, where we tested the impact of different concentrations of glycomodulator on product quality. The next two bioprocesses were carried out in 200 L and 1000 L bioreactors. We compared cell growth, metabolism, titer, and quality results across different volume scales and identified the maintenance of a constant power-to-volume ratio as a suitable scaling-up criterion.
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