METHODS FOR PRODUCING ANTIBODIES
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United States of America Patent
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Mar 14, 2014
filing date -
Mar 15, 2013
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Abandoned
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Abstract
The present invention describes a method for producing an antibody in Pichia pastoris, such as by fed-batch fermentation. The method includes a respiratory quotient control for monitoring the ethanol profile and to improve the quality of the antibody by, for example, eliminating clipping of the heavy chain. The method may also include a strategy of increasing the ethanol concentration to about 18-22 g/L and then maintaining the ethanol level at about 5-17 g/L to stabilize the cell mass and enhance the production rate of the antibody. The method may also include the addition of about 2.0-5.0 g/L of hydroxyurea during the fermentation process to sustain a constant cell density and enhance the whole broth titer of the antibody.
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