Adaptive control of glycerol & methanol feeding in recombinant Pichia pastoris cultures: Impact on antibody titre
Poster Aug 18, 2008
Pichia pastorisprocesses for heterolougous protein expression are typically run in three phases: a batch phase, an exponential feeding fed-batch phase and a long oxygen transfer limitation (OTL) phase. The final protein titre is often limited by the oxygen availability in the OTL phase. Here a direct adaptive controller is designed for the OTL phase. The controller was validated in pilot P. pastoris cultivations expressing a single chain antibody fragment (ScFv). This work shows that the proposed controller can regulate the dissolved oxygen tension (DOT) at very low levels (5 %) with high stability by manipulating the glycerol feeding rate, thereby enhancing the oxygen transfer at high cell density, which finally leads to a higher antibody titre.
Investigating the Effects of Fructose Consumption and Inadequate Copper Intake on Nonalcoholic Fatty Liver DiseasePoster
Metabolomics is a viable method for identifying compounds associated with NAFLD. In this investigation, high-quality data facilitate the identification of key metabolites differentiating normal versus diseased species.READ MORE
CiPA Phase 2 Study: validation of an automated microelectrode array (MEA) assay of hiPSC-derived cardiomyocyte electrophysiology for cardiac safety evaluationPoster
These results support the use of hSC-CM and MEA technology for preclinical assessment of proarrhythmic risk within the proposed CiPA paradigm, and, more generally, demonstrate that automation of the CM-MEA assay can achieve high reliability and throughput for cardiac risk assessment in vitro.READ MORE