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  Rapid and Consistent Evolution of Colistin Resistance in Extensively Drug-Resistant Pseudomonas aeruginosa during Morbidostat Culture

Doesselmann, B., Willmann, M., Steglich, M., Bunk, B., Nuebel, U., Peter, S., & Neher, R. A. (2017). Rapid and Consistent Evolution of Colistin Resistance in Extensively Drug-Resistant Pseudomonas aeruginosa during Morbidostat Culture. ANTIMICROBIAL AGENTS AND CHEMOTHERAPY, 61(9):. doi:10.1128/AAC.00043-17.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-0002-1A2D-0 版のパーマリンク: https://hdl.handle.net/21.11116/0000-0002-1A2E-F
資料種別: 学術論文

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 作成者:
Doesselmann, Bianca1, 著者
Willmann, Matthias2, 著者
Steglich, Matthias2, 著者
Bunk, Boyke2, 著者
Nuebel, Ulrich2, 著者
Peter, Silke2, 著者
Neher, Richard A.1, 2, 著者
所属:
1Max Planck Institute for Developmental Biology, Max Planck Society, Max-Planck-Ring 5, 72076 Tübingen, DE, ou_2421691              
2External Organizations, ou_persistent22              

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キーワード: CATIONIC ANTIMICROBIAL PEPTIDES; 2-COMPONENT REGULATORY SYSTEM; ACINETOBACTER-BAUMANNII; ESCHERICHIA-COLI; ANTIBIOTIC-RESISTANCE; KLEBSIELLA-PNEUMONIAE; BETA-LACTAMASES; OUTER-MEMBRANE; RISK-FACTORS; POLYMYXIN-B; Pseudomonas aeruginosa; colistin resistance; experimental evolution; morbidostat;
 要旨: Colistin is a last-resort antibiotic commonly used against multidrug-resistant strains of Pseudomonas aeruginosa. To investigate the potential for in situ evolution of resistance against colistin and to map the molecular targets of colistin resistance, we exposed two P. aeruginosa isolates to colistin using a continuous-culture device known as a morbidostat. As a result, colistin resistance reproducibly increased 10-fold within 10 days and 100-fold within 20 days, along with highly stereotypic yet strain-specific mutation patterns. The majority of mutations hit the pmrAB two-component signaling system and genes involved in lipopolysaccharide (LPS) synthesis, including lpxC, pmrE, and migA. We tracked the frequencies of all arising mutations by whole-genome deep sequencing every 3 to 4 days to obtain a detailed picture of the dynamics of resistance evolution, including competition and displacement among multiple resistant subpopulations. In 7 out of 18 cultures, we observed mutations in mutS along with a mutator phenotype that seemed to facilitate resistance evolution.

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言語: eng - English
 日付: 2017
 出版の状態: オンラインで出版済み
 ページ: 16
 出版情報: -
 目次: -
 査読: -
 識別子(DOI, ISBNなど): ISI: 000408309000001
DOI: 10.1128/AAC.00043-17
 学位: -

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出版物名: ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
種別: 学術雑誌
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出版社, 出版地: 1752 N ST NW, WASHINGTON, DC 20036-2904 USA : AMER SOC MICROBIOLOGY
ページ: - 巻号: 61 (9) 通巻号: e00043-17 開始・終了ページ: - 識別子(ISBN, ISSN, DOIなど): ISSN: 0066-4804