安全监测

注射剂科氏葡萄球菌污染的鉴定和同源性分析方法研究*

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  • 1.广州市食品检验所,广州 511400;
    2.四川省食品药品检验检测院,成都 611731;
    3.上海诺狄生物科技有限公司, 上海 201162;
    4.杭州微数生物科技有限公司,杭州 311231;
    5.四川省疾病预防控制中心,成都 610041
第一作者 Tel:(020)85825567; E-mail:xun-sueqi@163.com
**Tel:(020)85825983; E-mail:xinwumao@163.com

收稿日期: 2021-03-26

  网络出版日期: 2024-06-21

基金资助

*四川省科技基础条件平台项目(2017TJPT0044);成都市科技惠民技术研发项目(2016-HM01-00087-SF);广州市科学研究计划(201904010253)

Study on identification and phylogenetic relationship analysis methods of Staphylococcus cohnii contamination in injection*

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  • 1. Guangzhou Institute for Food Inspection, Guangzhou 511400, China;
    2. Sichuan Institute for Food and Drug Control, Chengdu 611731, China;
    3. Shanghai NOD Biotech Co., Ltd, Shanghai 201162, China;
    4. Hangzhou Digital-Micro Biotech Co., Ltd, Hangzhou 311231, China;
    5. Sichuan Center for Disease Control and Prevention, Chengdu 610041, China

Received date: 2021-03-26

  Online published: 2024-06-21

摘要

目的:采用多种常用微生物鉴定方法和同源性分析方法,对某制药企业注射剂无菌检查试验中分离的微生物污染菌A1进行来源分析,为药品生产企业完善微生物监控体系,实现生产和检验过程的微生物控制提供技术参考。方法:使用VITEK 2微生物生化鉴定仪对A1和本次污染调查采集的78株菌进行初步鉴定,选择与A1同属的菌,分别采用傅里叶变换红外光谱(FTIR)、基质辅助激光解析电离飞行时间质谱(MALDI-TOF MS)、16S rRNA基因序列分析、核糖体分型(Ribotyping)、全基因组测序(WGS)等方法进行鉴定和同源性分析,同源性分析结果用PFGE进行了验证。结果:除MALDI-TOF MS法的部分鉴定结果外,几种方法的微生物鉴定结果完全相同;上述方法的同源性分析结果均为A1溯源自无菌检验使用的无菌隔离器内部仪器表面采集菌株A2(16S rRNA基因序列分析本次仅溯源至亚种),该结果得到了PFGE证实;不同方法在种的集群之间的亲缘关系划分有所不同。结论:微生物污染溯源的流程一般包括以下3步:首先采用生化鉴定法初步确定污染菌的种;其次从污染调查采集菌株和环境菌库中选择与污染菌同种的微生物;然后,使用16S rRNA基因序列分析、核糖体分型、全基因组测序等方法进行微生物鉴定和同源性分析。采用16S rRNA基因序列分析时,必须进行多相鉴定以便准确溯源,才能有效实施纠正与预防措施。

本文引用格式

孙雪奇, 肖剑, 秦力, 陈婕, 柴海毅, 刘程智, 杨小蓉, 毛新武 . 注射剂科氏葡萄球菌污染的鉴定和同源性分析方法研究*[J]. 药物分析杂志, 2021 , 41(10) : 1764 -1774 . DOI: 10.16155/j.0254-1793.2021.10.14

Abstract

Objective: To study on identification and phylogenetic relationship analysis methods of microbiological contamination and trace to the source of bacterial contamination A1, which was isolated from injection sterility test of a pharmaceutical company. To provide technical supports for pharmaceutical companies to improve the microbio-logical monitoring system and realize manufacturing process control of microorganism during production and inspection. Methods: A1 and 78 strains, collected in the course of this investigation, were biochemical identified by VITEK 2 Compact system. Strains belonging to the same genus as A1 were picked out to characterized identification and phylogenetic relationship analysis by several methods, such as Fourier transform infrared spectrometry (FTIR), matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS), 16S rRNA gene sequencing, ribosomal DNA typing (Ribotyping) and whole-genome sequence (WGS). The phylogenetic relationship analysis results verified by pulsed field gel electrophoresis (PFGE). Results: Except for the partial identification results of MALDI-TOF MS, the microbial identification results of several methods were identical. Phylogenetic relationship analysis results of these methods were microbial contamination A1 was traced back to the strain A2 (16S rRNA gene sequencing method traced back to subspecies this time), a strain on instrument surface in isolator used for sterility test. PFGE confirmed the analysis results. The phylogenetic relationships among species clusters might be different. Conclusion: In general, the standard procedure for phylogenetic relationships analysis of microbiological contamination includes following three steps: Firstly, biochemical identification method is adopted to identify the species of the contaminated bacteria. Secondly, microbes that are the same species as the pollution bacteria are selected from strains collected from the pollution investigation and the environmental bacterial library. And thirdly, analysis method such as 16S rRNA gene sequencing, ribotyping and WGS can be used for microbial identification and phylogenetic relationship analysis. When 16S rRNA gene sequencing is taken for phylogenetic relationship analysis, multiphase identification is suggested to use for accurate traceability, and only in this way , corrective and preventive measures can be implemented effectively.

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