Lipid engineering combined with systematic metabolic engineering of Saccharomyces cerevisiae for high-yield production of lycopene

Research output: Research - peer-reviewJournal article – Annual report year: 2019

  • Author: Ma, Tian

    Wuhan University, China

  • Author: Shi, Bin

    Wuhan University, China

  • Author: Ye, Ziling

    J1 Biotech Co., Ltd., China

  • Author: Li, Xiaowei

    Wuhan University, China

  • Author: Liu, Min

    Wuhan University, China

  • Author: Chen, Yun

    Chalmers University of Technology, Sweden

  • Author: Xia, Jiang

    The Chinese University of Hong Kong, Shenzhen, China

  • Author: Nielsen, Jens

    Yeast Cell Factories, Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet, 2800, Kgs. Lyngby, Denmark

  • Author: Deng, Zixin

    Shanghai Jiao Tong University, China

  • Author: Liu, Tiangang

    Wuhan University, China

View graph of relations

Saccharomyces cerevisiae is an efficient host for natural-compound production and preferentially employed in academic studies and bioindustries. However, S. cerevisiae exhibits limited production capacity for lipophilic natural products, especially compounds that accumulate intracellularly, such as polyketides and carotenoids, with some engineered compounds displaying cytotoxicity. In this study, we used a nature-inspired strategy to establish an effective platform to improve lipid oil-triacylglycerol (TAG) metabolism and enable increased lycopene accumulation. Through systematic traditional engineering methods, we achieved relatively high-level production at 56.2mg lycopene/g cell dry weight (cdw). To focus on TAG metabolism in order to increase lycopene accumulation, we overexpressed key genes associated with fatty acid synthesis and TAG production, followed by modulation of TAG fatty acyl composition by overexpressing a fatty acid desaturase (OLE1) and deletion of Seipin (FLD1), which regulates lipid-droplet size. Results showed that the engineered strain produced 70.5mg lycopene/g cdw, a 25% increase relative to the original high-yield strain, with lycopene production reaching 2.37g/L and 73.3mg/g cdw in fed-batch fermentation and representing the highest lycopene yield in S. cerevisiae reported to date. These findings offer an effective strategy for extended systematic metabolic engineering through lipid engineering.
Original languageEnglish
JournalMetabolic Engineering
Volume52
Pages (from-to)134-142
ISSN1096-7176
DOIs
StateAccepted/In press - 2019
CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • Saccharomyces cerevisiae, Lipid engineering, Lycopene, Systematic metabolic engineering, Triacylglycerol
Download as:
Download as PDF
Select render style:
APAAuthorCBE/CSEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBE/CSEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBE/CSEHarvardMLAStandardVancouverShortLong
Word

ID: 161201594