生物学杂志 ›› 2020, Vol. 37 ›› Issue (1): 1-.doi: 10.3969/j.issn.2095-1736.2020.01.001

• 特约综述 •    下一篇

在耐热的马克斯克鲁维酵母中构建微生物细胞工厂

  

  1. 中国科学技术大学 生命科学学院, 合肥230026
  • 出版日期:2020-02-18 发布日期:2020-03-09
  • 通讯作者: 洪泂,博士,副教授,主要研究方向为合成生物学,E-mail:hjiong@ustc.edu.cn
  • 作者简介:王冬梅,博士,副教授,主要研究方向为微生物应用,E-mail:dmwang09@ustc.edu.cn
  • 基金资助:
    国家自然科学基金(31770085, 31570082 )

Constructing microbial cell factory with thermo-tolerant yeast Kluyveromyces marxianus

  1. School of Life Sciences, University of Science and Technology of China, Hefei 230026, China
  • Online:2020-02-18 Published:2020-03-09

摘要: 马克斯克鲁维酵母具有耐高温、高生长速率、可利用广泛的碳源等优点,作为微生物细胞工厂的宿主菌有很大优势。野生型的马克斯克鲁维酵母在生产菊糖酶、乙醇、苯乙醇及乙酸乙酯等产品上有了一些研究成果;为了进一步提高其作为微生物细胞工厂的生产效率,也可对该酵母进行基因工程改造,其遗传操作系统包括宿主菌、外源基因的表达方法和基因敲除方法也逐渐建立和完善;在此基础上以马克斯克鲁维酵母为平台通过工程改造构建的微生物细胞工厂具有了一定的高效生产重组蛋白、乙醇、木糖醇、乳酸、果糖、虾青素等产品的能力。但是马克思克鲁维酵母在多种碳源的共利用、抑制物耐受、高浓度底物和产物的耐受等方面能力仍需进一步提高。

关键词: 马克斯克鲁维酵母, 耐热, 微生物细胞工厂

Abstract: Kluyveromyces marxianus is a thermo-tolerant yeast with the fastest growth rate in eukaryote and with a wide carbon spectrum. It is an excellent host for microbial cell factory construction. There were some achievements in the production of inulinase, ethanol, 2-phenylethanol, ethyl acetate etc. by the wild type K. marxianus. The genetic modification system including host strains, gene overexpression and gene deletion methods was constructed to improve the efficiency of microbial cell factories. The genetic engineered K. marxianus can efficiently produce heterogenous protein, ethanol, xylitol, lactic acid, astaxanthin etc. However, the ability of multiple carbon source co-utilization, inhibitor tolerance, high concentration substrate and product tolerance needs to be improved further.

Key words: Kluyveromyces marxianus, thermo-tolerant, microbial cell factory

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