食品科学 ›› 2012, Vol. 33 ›› Issue (3): 194-198.doi: 10.7506/spkx1002-6630-201203040

• 生物工程 • 上一篇    下一篇

单增李斯特氏菌MALDI-TOF-MS鉴定与分型研究

王 耀,曹际娟,赵 昕,郑秋月,王刚,田卓,史媛媛,曹远银   

  1. 1. 沈阳农业大学植物保护学院植物免疫研究所 2. 辽宁出入境检验检疫局 3. 庄河出入境检验检疫局 4. 营口出入境检验检疫局
  • 出版日期:2012-02-15 发布日期:2012-02-14
  • 基金资助:
    国家质检总局科研项目(2010IK175);国家质检公益性行业科研项目(200910270)

Identification and Subtyping of Listeria monocytogenes by MALDI-TOF-MS

WANG Yao,CAO Ji-juan,ZHAO Xin,ZHENG Qiu-yue,WANG Gang,TIAN Zhuo,SHI Yuan-yuan,CAO Yuan-yin   

  1. 1. Institute of Plant Immunology, College of Plant Protection, Shenyang Agricultural University, Shenyang 110161, China; 2. Liaoning Entry-Exit Inspection and Quarantine Bureau, Dalian 116001, China;3. Zhuanghe Entry-Exit Inspection and Quarantine Bureau, Zhuanghe 121013, China;4. Yingkou Entry-Exit Inspection and Quarantine Bureau, Yingkou 115000, China
  • Online:2012-02-15 Published:2012-02-14

摘要: 为建立单增李斯特氏菌的基质辅助激光解吸电离飞行时间质谱(MALDI-TOF-MS)快速鉴定与分型方法,实验收集37株单增李斯特氏菌分离株,应用MALDI-TOF-MS采集图谱,获取独特的蛋白质指纹图谱,汇总成标准图谱,建立单增李斯特氏菌鉴定数据库。采用单增李斯特氏菌标准菌株进行验证,表明鉴定结果的可信度很高。在数据库信息的基础上,对37株单增李斯特氏菌分离株进行聚类分型。分型结果表明,在蛋白质水平上,MALDI-TOF-MS可把37株单增李斯特氏菌分成9个型别。

关键词: 单增李斯特氏菌, MALDI-TOF-MS, 鉴定, 分型

Abstract: In order to establish a matrix-assisted laser desorption ionisation time-of-flight mass spectrometry (MALDI-TOF-MS) method for the rapid identification and subtyping of Listeria monocytogenes, 37 Listeria monocytogenes isolates were tested using MALDI-TOF-MS and characteristic protein fingerprints from their spectra were acquired and summarized into standard spectra to construct a database for the identification of Listeria monocytogenes. The method was highly reliable as demonstrated by the results obtained by the method for standard Listeria monocytogenes strains. Based on the identification database constructed, the Listeria monocytogenes isolates were classed into 9 subtypes at the protein level.

Key words: Listeria monocytogenes, matrix-assisted laser desorption ionisation time-of-flight mass spectrometry(MALDI-TOF-MS), identification, subtyping

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