In situ solid-liquid extraction enhances recovery of taxadiene from engineered S. cerevisiae cell factories [article]

Jorge Santoyo-Garcia, Laura Walls, Behnaz Nowrouzi, Marisol Ochoa-Villareal, Gary Loake, Simone Dimartino, Leonardo Rios-Solis
2021 bioRxiv   pre-print
A novel in situ solid phase adsorption strategy was investigated for enhanced recovery of taxadiene, a precursor to the blockbuster anticancer drug, paclitaxel, from engineered Saccharomyces cerevisiae. A synthetic adsorbent resin (HP-20) was employed to capture taxadiene across a range of cultivation scales. Cultivations from 12 % (w/v) resin concentration resulted in bead fragmentation which were found to be detrimental to cellular growth. After cultivation, the use of acetone for desorption
more » ... aptured intracellular and secreted taxadiene, achieving an integration of the bioprocess. Implementation of the proposed method at microscale (2 mL) and benchtop bioreactor scale (250 mL) resulted in 1.9-fold and 1.4-fold increments in taxadiene titer, respectively, compared to the extraction method using a dodecane overlay. Taxadiene was found to be distributed between resin beads and biomass in a ratio of 50 %. Finally, a maximum taxadiene titer of 76 ± 19 mg/L was achieved in the benchtop bioreactor cultivations.
doi:10.1101/2021.07.12.452013 fatcat:gm4jc4cmxfdbjb232lrsexa4ea