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    Temporal proteomic profiling reveals changes that support Burkholderia biofilms

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    Author
    Khan, M.M.
    Chattagul, S.
    Tran, B.Q.
    Date
    2019
    Journal
    Pathogens and Disease
    Publisher
    Oxford University Press
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://doi.org/10.1093/femspd/ftz005
    Abstract
    Melioidosis associated with opportunistic pathogen Burkholderia pseudomallei imparts a huge medical burden in Southeast Asia and Australia. At present there is no available human vaccine that protects against B. pseudomallei infection and antibiotic treatments are limited particularly for drug-resistant strains and bacteria in biofilm forms. Biofilm forming bacteria exhibit phenotypic features drastically different to their planktonic states, often exhibiting a diminished response to antimicrobial therapies. Our earlier work on global profiling of bacterial biofilms using transcriptomics and proteomics revealed transcript-decoupled protein abundance in bacterial biofilms. Here we employed reverse phase liquid chromatography tandem mass spectrometry (LC-MS/MS) to deduce temporal proteomic differences in planktonic and biofilm forms of Burkholderia thailandensis, which is weakly surrogate model of pathogenic B. pseudomallei as sharing a key element in genomic similarity. The proteomic analysis of B. thailandensis in biofilm versus planktonic states revealed that proteome changes support biofilm survival through decreased abundance of metabolic proteins while increased abundance of stress-related proteins. Interestingly, the protein abundance including for the transcription protein TEX, outer periplasmic TolB protein, and the exopolyphosphatase reveal adaption in bacterial biofilms that facilitate antibiotic tolerance through a non-specific mechanism. The present proteomics study of B. thailandensis biofilms provides a global snapshot of protein abundance differences and antimicrobial sensitivities in planktonic and sessile bacteria.
    Keyword
    Antimicrobial tolerance
    Biofilms
    Liquid chromatography mass spectrometry
    Melioidosis
    Proteomics
    Identifier to cite or link to this item
    https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065432584&doi=10.1093%2ffemspd%2fftz005&partnerID=40&md5=4abe79cc7b8e9199b31bf0d4068a58a6; http://hdl.handle.net/10713/10773
    ae974a485f413a2113503eed53cd6c53
    10.1093/femspd/ftz005
    Scopus Count
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    UMB Open Access Articles 2019

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