Increased phage resistance through lysogenic conversion accompanying emergence of monophasic Salmonella Typhimurium ST34 pandemic strain.

Increased phage resistance through lysogenic conversion accompanying emergence of monophasic Salmonella Typhimurium ST34 pandemic strain.
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DOI:
10.1099/mgen.0.000897
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发表时间:
2022-11
期刊:
影响因子:
3.9
通讯作者:
Kingsley RA
Kingsley RA
中科院分区:
生物学2区
文献类型:
--
作者:
Charity OJ;Acton L;Bawn M;Tassinari E;Thilliez G;Chattaway MA;Dallman TJ;Petrovska L;Kingsley RA

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肠道沙门氏菌 鼠伤寒血清型(S.鼠伤寒沙门氏菌)包括一组密切相关的人类和动物病原体, 沙门 全球感染。流行病学记录显示,在欧洲,鼠伤寒的特点是连续几波的优势克隆,每一波在替换之前流行大约10-15年。流行性克隆的连续性可能是旨在控制这种病原体的传播和对人类和动物健康的影响的干预措施的一个移动目标。本文研究了噬菌体敏感性与沙门氏菌群体结构的关系。使用来自安德森噬菌体分型方案的数据的鼠伤寒沙门氏菌。我们观察到更大的阻力噬菌体捕食流行性克隆在牲畜中流通,在过去的几十年中相比,具有有限的主机范围的变种,暗示增加的阻力噬菌体出现的流行性克隆对人类健康特别重要。双相S.鼠伤寒ST 34,最近的主要多药耐药克隆,伴随着增加的抗性噬菌体捕食在克隆扩增过程中,部分收购的mTmII原噬菌体,可能有助于健身的菌株,取代缺乏这种原噬菌体的祖先。
Salmonella enterica serovar Typhimurium (S. Typhimurium) comprises a group of closely related human and animal pathogens that account for a large proportion of all Salmonella infections globally. The epidemiological record of S. Typhimurium in Europe is characterized by successive waves of dominant clones, each prevailing for approximately 10–15 years before replacement. Succession of epidemic clones may represent a moving target for interventions aimed at controlling the spread and impact of this pathogen on human and animal health. Here, we investigate the relationship of phage sensitivity and population structure of S. Typhimurium using data from the Anderson phage typing scheme. We observed greater resistance to phage predation of epidemic clones circulating in livestock over the past decades compared to variants with a restricted host range implicating increased resistance to phage in the emergence of epidemic clones of particular importance to human health. Emergence of monophasic S. Typhimurium ST34, the most recent dominant multidrug-resistant clone, was accompanied by increased resistance to phage predation during clonal expansion, in part by the acquisition of the mTmII prophage that may have contributed to the fitness of the strains that replaced ancestors lacking this prophage.
DOI: 10.1186/1471-2105-7-88
发表时间: 2006-02-23
期刊: BMC bioinformatics
影响因子: 3
作者:
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影响因子: 4.6
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影响因子: 11.1
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