Production of a human milk oligosaccharide 2'-fucosyllactose by metabolically engineered Saccharomyces cerevisiae

Sora Yu, Jing Jing Liu, Eun Ju Yun, Suryang Kwak, Kyoung Heon Kim, Yong Su Jin

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Background: 2'-Fucosyllactose (2-FL), one of the most abundant oligosaccharides in human milk, has potential applications in foods due to its health benefits such as the selective promotion of bifidobacterial growth and the inhibition of pathogenic microbial binding to the human gut. Owing to the limited amounts of 2-FL in human milk, alternative microbial production of 2-FL is considered promising. To date, microbial production of 2-FL has been studied mostly in Escherichia coli. In this study, 2-FL was produced alternatively by using a yeast Saccharomyces cerevisiae, which may have advantages over E. coli. Results: Fucose and lactose were used as the substrates for the salvage pathway which was constructed with fkp coding for a bifunctional enzyme exhibiting l-fucokinase and guanosine 5'-diphosphate-l-fucose phosphorylase activities, fucT2 coding for α-1,2-fucosyltransferase, and LAC12 coding for lactose permease. Production of 2-FL by the resulting engineered yeast was verified by mass spectrometry. 2-FL titers of 92 and 503mg/L were achieved from 48-h batch fermentation and 120-h fed-batch fermentation fed with ethanol as a carbon source, respectively. Conclusions: This is the first report on 2-FL production by using yeast S. cerevisiae. These results suggest that S. cerevisiae can be considered as a host engineered for producing 2-FLvia the salvage pathway.

Original languageEnglish
Article number101
JournalMicrobial Cell Factories
Volume17
Issue number1
DOIs
Publication statusPublished - 2018 Jun 27

Keywords

  • 2'-Fucosyllactose
  • Human milk oligosaccharide
  • Lactose permease
  • Saccharomyces cerevisiae
  • Salvage pathway
  • α-1,2-Fucosyltransferase

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

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