Title |
Antibiotic treatment modulates protein components of cytotoxic outer membrane vesicles of multidrug-resistant clinical strain, Acinetobacter baumannii DU202
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Published in |
Clinical Proteomics, August 2018
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DOI | 10.1186/s12014-018-9204-2 |
Pubmed ID | |
Authors |
Sung Ho Yun, Edmond Changkyun Park, Sang-Yeop Lee, Hayoung Lee, Chi-Won Choi, Yoon-Sun Yi, Hyun-Joo Ro, Je Chul Lee, Sangmi Jun, Hye-Yeon Kim, Gun-Hwa Kim, Seung Il Kim |
Abstract |
Outer membrane vesicles (OMVs) of Acinetobacter baumannii are cytotoxic and elicit a potent innate immune response. OMVs were first identified in A. baumannii DU202, an extensively drug-resistant clinical strain. Herein, we investigated protein components of A. baumannii DU202 OMVs following antibiotic treatment by proteogenomic analysis. Purified OMVs from A. baumannii DU202 grown in different antibiotic culture conditions were screened for pathogenic and immunogenic effects, and subjected to quantitative proteomic analysis by one-dimensional electrophoresis and liquid chromatography combined with tandem mass spectrometry (1DE-LC-MS/MS). Protein components modulated by imipenem were identified and discussed. OMV secretion was increased > twofold following imipenem treatment, and cytotoxicity toward A549 human lung carcinoma cells was elevated. A total of 277 proteins were identified as components of OMVs by imipenem treatment, among which β-lactamase OXA-23, various proteases, outer membrane proteins, β-barrel assembly machine proteins, peptidyl-prolyl cis-trans isomerases and inherent prophage head subunit proteins were significantly upregulated. In vitro stress such as antibiotic treatment can modulate proteome components in A. baumannii OMVs and thereby influence pathogenicity. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 1 | 33% |
Unknown | 2 | 67% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 2 | 67% |
Science communicators (journalists, bloggers, editors) | 1 | 33% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 56 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 10 | 18% |
Researcher | 10 | 18% |
Student > Master | 6 | 11% |
Student > Bachelor | 5 | 9% |
Student > Doctoral Student | 4 | 7% |
Other | 9 | 16% |
Unknown | 12 | 21% |
Readers by discipline | Count | As % |
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Biochemistry, Genetics and Molecular Biology | 15 | 27% |
Immunology and Microbiology | 10 | 18% |
Agricultural and Biological Sciences | 5 | 9% |
Pharmacology, Toxicology and Pharmaceutical Science | 3 | 5% |
Unspecified | 2 | 4% |
Other | 3 | 5% |
Unknown | 18 | 32% |