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L-Asparaginase (ASNase) used in the treatment of acute lymphoblastic leukemia is produced from bacterial sources only. BERG-iBB researchers working with colleagues from U. São Paulo, Kings College London, U. Génova and U. Campinas developed a recombinant Pichia pastoris to synthesise ASNase II from Saccharomyces cerevisiae. A multistage fed-batch cultivation divided in four distinct phases was applied to produce ASNase II and determine fermentation parameters.Results showed that the best strategy employed for ASNase II production uses glycerol fed-batch phase with pseudo exponential feeding plus induction with continuous methanol feeding. The study was published in Frontiers in Bioengineering and Biotechnology.
