生物技术通报 ›› 2013, Vol. 0 ›› Issue (12): 151-155.

• 研究报告 • 上一篇    下一篇

隐球酵母vps41Δ菌株转化条件优化及突变体库构建

宋瑛瑾, 刘晓光   

  1. 工业发酵微生物教育部重点实验室 工业酶国家工程实验室 天津市工业微生物重点实验室
    天津科技大学生物工程学院,天津 300457
  • 收稿日期:2013-05-25 出版日期:2013-12-20 发布日期:2013-12-20
  • 作者简介:宋瑛瑾,女,硕士研究生,研究方向:微生物与生化药学;E-mail:853462601@qq.com
  • 基金资助:
    国家自然科学基金项目(31070125)

Optimization of Agrobacterium-mediated Transformation of Cryptococcus neoformans vps41 Δ and Construction of a Insertional mutagenesis Library

Song Yingjin, Liu Xiaoguang   

  1. Key Laboratory of Industrial Fermentation Microbiology,Ministry of Education,National Engineering Laboratory for Industrial
    Enzymes,Tianjin Key Laboratory of Industrial Microbiology,the College of Biotechnology,
    Tianjin University of Science & Technology,Tianjin 300457
  • Received:2013-05-25 Published:2013-12-20 Online:2013-12-20

摘要: 新型隐球酵母(Cryptococcus neoformans)是一种重要的条件致病性真菌。前期试验证实VPS41基因参与隐球酵母的氮源饥饿应答反应并影响其致病性。系统研究了影响农杆菌介导的vps41Δ饥饿应答缺陷型菌株关键因素,并利用优化的农杆菌转化体系构建了包含5 000多个转化子的vps41Δ菌株的T-DNA插入突变体库,为下一步筛选鉴定隐球酵母VPS41饥饿应答信号通路中的其他相关基因提供了基础材料。

关键词: 新型隐球酵母, 根瘤农杆菌, vps41Δ, T-DNA, 突变体库

Abstract: Cryptococcus neoformans is a major human opportunistic fungal pathogens. The previous work has shown that VPS41 gene contributes to virulence by mediating nitrogen starvation response. In this study, major factors affecting the efficiency of Agrobacterium tumefaciens-mediated transformation of vps41Δ were systematically investigated, and optimized parameters were used to construct an insertional metagenesis library of the deletion mutant containing over 5 000 transformants. The availability of this insertional library could facilite the screening and identification of other genes involved in the signaling pathway of starvation response of C. neoformans.

Key words: Cryptococcus neoformans, Agrobacterium tumefaciens, vps41Δ, T-DNA, Mutant library