牦牛携带的产志贺毒素大肠杆菌分离株的多位点序列分型研究

doi:10.3969/cjz.j.issn.1002-2694.2013.12.003

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摘要目的对牦牛携带的产志贺毒素大肠杆菌(Shiga toxin-producing Escherichia coli,STEC)进行多位点序列分型(Multilocus sequence typing,MLST)分析,了解菌株的遗传进化关系及致病潜力。方法根据E. coli MLST数据库(http://mlst.ucc.ie/mlst/dbs/Ecoli)提供的MLST方案,对青海玉树牦牛中分离的54株STEC分离株的7个管家基因进行PCR扩增并测序,通过序列比对确定其等位基因及菌株序列型(Sequence type,ST),并使用BioNumerics软件构建最小生成树(Minimum spanning tree,MST),分析牦牛ST型与HUSEC及人源主要流行血清群STEC菌株ST型间的进化关系。结果 54株牦牛STEC菌株呈现高度遗传多态性,可分为31个ST型别,其中包括7个新的等位基因型和17个新的ST型,并存在与HUSEC及主要流行血清群STEC亲缘关系相同或相近的ST型别。结论青藏高原牦牛携带的STEC具有遗传多样性及一定的特异性,部分菌株具有对人致病的潜力。

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关键词 ：产志贺毒素大肠杆菌, 多位点序列分型, 序列型, 牦牛

Abstract：To investigate the molecular epidemiologic characteristics and the potential cause for human disease of Shiga toxin-producing Escherichia coli (STEC) isolated from yaks in the Qinghai-Tibetan Plateau, a multilocus sequence typing (MLST) scheme provided by E. coli MLST database (http://mlst.ucc.ie/mlst/dbs/Ecoli) was performed. Seven housekeeping genes were amplified by PCR and then sequenced. The sequence types (STs) were determined by sequences comparing. The minimum spanning tree (MST) was constructed using BioNumerics software. Thirty-one STs including 7 new alleles and 17 new STs were identified in 54 yak STEC isolates. Some of these STs shared the same or related STs with HUSEC or human STEC strains. It could be concluded that there exists highly molecular diversity among the STEC isolates in yaks, some of which may have the potential to cause human disease.

Key words： Shiga toxin-producing Escherichia coli multilocus sequence typing sequence type yak Supported by the National Major Science & Technology Program for Prevention and Control of AIDS, Viral Hepatitis and Other Major Infectious Diseases (No. 2013ZX10004-001)

收稿日期: 2013-07-10

PACS:

R515

基金资助:国家“艾滋病和病毒性肝炎等重大传染病防治”科技重大专项(No.2013ZX10004-001)

通讯作者: 卢珊, Email:lushan@icdc.cn E-mail: lushan@icdc.cn

引用本文:

孙晖, 白向宁, 赵爱兰, 孟琼, 熊衍文, 卢珊. 牦牛携带的产志贺毒素大肠杆菌分离株的多位点序列分型研究[J]. 中国人兽共患病学报, 2013, 29(12): 1137-1142. SUN Hui, BAI Xiang-ning, ZHAO Ai-lan, MENG Qiong, XIONG Yan-wen, LU Shan. Multilocus sequence typing of Shiga toxin-producing Escherichia coli isolated from yaks. Chinese Journal of Zoonoses, 2013, 29(12): 1137-1142.

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http://www.rsghb.cn/CN/10.3969/cjz.j.issn.1002-2694.2013.12.003 或 http://www.rsghb.cn/CN/Y2013/V29/I12/1137

[1] Farrokh C, Jordan K, Auvray F, et al. Review of Shiga-toxin-producing Escherichia coli (STEC) and their significance in dairy production[J]. Int J Food Microbiol, 2013, 162(2): 190-212. DOI: 10.1016/j.ijfoodmicro.2012.08.008
[2]Hussein HS. Prevalence and pathogenicity of Shiga toxin-producing Escherichia coli in beef cattle and their products[J]. J Anim Sci, 2007, 85(13 Suppl): E63-72. DOI:10.2527/jas.2006-421
[3]Bono JL, Smith TP, Keen JE, et al. Phylogeny of Shiga toxin-producing Escherichia coli O157 isolated from cattle and clinically ill humans[J]. Mol Biol Evol, 2012, 29(8): 2047-2062. DOI: 10.1093/molbev/mss072
[4]Xiong Y, Wang P, Lan R, et al. A novel Escherichia coli O157∶H7 clone causing a major hemolytic uremic syndrome outbreak in China[J]. PLoS One, 2012, 7(4): e36144. DOI: 10.1371/journal.pone.0036144
[5]Bai X, Zhao A, Lan R, et al. Shiga toxin-producing Escherichia coli in Yaks (Bos grunniens) from the Qinghai-Tibetan plateau, China[J]. PLoS One, 2013, 8(6): e65537. DOI: 10.1371/journal.pone.0065537
[6]Bai XN, Zhan AL, Xia SL, et al. Multilocus sequence typing of non-O157 Shiga toxin-producing Escherichia coli isolates[J]. Chin J Zoonoses, 2012, 28 (6): 544-548, 560. DOI: 10.3969/cjz.j.issn.1002-2694.2012.06.006 (in Chinese)
白向宁,赵爱兰,夏胜利,等.非O157产志贺毒素大肠杆菌分离株的多位点序列分型研究[J].中国人兽共患病学报,2012, 28 (6): 544-548,560. DOI: 10.3969/cjz.j.issn.1002-2694.2012.06.006
[7]Mellmann A, Bielaszewska M, Kock R, et al. Analysis of collection of hemolytic uremic syndrome-associated enterohemorrhagic Escherichia coli[J]. Emerg Infect Dis, 2008, 14: 1287-1290. DOI: 10.3201/eid1408.071082
[8]Jin D, Zhao AL, Bai XN, et al. Pulsed-field gel electrophoresis typing on on-O157 Shiga toxin-producing Escherichia coli isolates[J]. Chin J Epidemiol, 2013, 34(5): 495-498. DOI: 10.3760/cma.j.issn.0254-6450.2013.05.000 (in Chinese)
金东,赵爱兰,白向宁,等.非O157 产志贺毒素大肠埃希菌分离株脉冲场凝胶电泳分析 [J].中华流行病学杂志,2013,34(5):495-498. DOI: 10.3760/cma.j.issn.0254-6450.2013.05.000
[9]Chen Y, Chen X, Zheng S, et al. Serotypes, genotypes and antimicrobial resistance patterns of human diarrhoeagenic Escherichia coli isolates circulating in southeastern China[J]. Clin Microbiol Infect, 2013, 19 [Epub ahead of print]. DOI: 10.1111/1469-0691.12188
[10]Manning SD, Motiwala AS, Springman AC, et al. Variation in virulence among clades of Escherichia coli O157∶H7 associated with disease outbreaks[J]. Proc Natl Acad Sci U S A, 2008, 105(12): 4868-4873. DOI: 10.1073/pnas.0710834105
[11]Hauser E, Mellmann A, Semmler T, et al. Phylogenetic and molecular analysis of food-borne shiga toxin-producing Escherichia coli[J]. Appl Environ Microbiol, 2013, 79(8): 2731-2740. DOI: 10.1128/AEM.03552-12