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Temperature downshift increases recombinant cytokine titer in Streptomyces lividans fermentation

  • Soon Il Yun
  • , Ahmad R.M. Yahya
  • , Doug Cossar
  • , William A. Anderson*
  • , Jeno M. Scharer
  • , Murray Moo-Young
  • *Corresponding author for this work
  • University of Waterloo
  • Cangene Corporation

Research output: Contribution to journalJournal articlepeer-review

Abstract

Recombinant human interleukin-3 (rhIL-3) production by a Streptomyces lividans strain is subject to severe proteolytic degradation. Human interleukin-3 (rhIL-3) concentration in the culture supernatant typically reaches 100-120 mg 1-1 about 20 h after inoculation, but the titer drops rapidly as the result of proteolysis. Reducing the culture temperature at this point has a dramatic effect on product yield, increasing the final concentration in the supernatant at least two-fold.

Original languageEnglish
Pages (from-to)1903-1905
Number of pages3
JournalBiotechnology Letters
Volume23
Issue number23
DOIs
StatePublished - 2001

Keywords

  • Fermentation
  • Interleukin-3
  • Proteases
  • Recombinant protein
  • Streptomyces

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