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    The co-transcriptome of uropathogenic Escherichia coli-infected mouse macrophages reveals new insights into host-pathogen interactions

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    Type
    Article
    Authors
    Mavromatis, Charalampos Harris cc
    Bokil, Nilesh J.
    Totsika, Makrina
    Kakkanat, Asha
    Schaale, Kolja
    Cannistraci, Carlo
    Ryu, Tae Woo
    Beatson, Scott A.
    Ulett, Glen C.
    Schembri, Mark A.
    Sweet, Matthew J.
    Ravasi, Timothy cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Program
    Computational Bioscience Research Center (CBRC)
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Integrative Systems Biology Lab
    Date
    2015-01-24
    Online Publication Date
    2015-01-24
    Print Publication Date
    2015-05
    Permanent link to this record
    http://hdl.handle.net/10754/550523
    
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    Abstract
    Urinary tract infections (UTI) are among the most common infections in humans. Uropathogenic Escherichia coli (UPEC) can invade and replicate within bladder epithelial cells, and some UPEC strains can also survive within macrophages. To understand the UPEC transcriptional programme associated with intramacrophage survival, we performed host–pathogen co-transcriptome analyses using RNA sequencing. Mouse bone marrow-derived macrophages (BMMs) were challenged over a 24 h time course with two UPEC reference strains that possess contrasting intramacrophage phenotypes: UTI89, which survives in BMMs, and 83972, which is killed by BMMs. Neither of these strains caused significant BMM cell death at the low multiplicity of infection that was used in this study. We developed an effective computational framework that simultaneously separated, annotated and quantified the mammalian and bacterial transcriptomes. Bone marrow-derived macrophages responded to the two UPEC strains with a broadly similar gene expression programme. In contrast, the transcriptional responses of the UPEC strains diverged markedly from each other. We identified UTI89 genes up-regulated at 24 h post-infection, and hypothesized that some may contribute to intramacrophage survival. Indeed, we showed that deletion of one such gene (pspA) significantly reduced UTI89 survival within BMMs. Our study provides a technological framework for simultaneously capturing global changes at the transcriptional level in co-cultures, and has generated new insights into the mechanisms that UPEC use to persist within the intramacrophage environment.
    Citation
    The co-transcriptome of uropathogenic Escherichia coli-infected mouse macrophages reveals new insights into host-pathogen interactions, 2015, 17 (5):730 Cellular Microbiology
    Publisher
    Wiley
    Journal
    Cellular Microbiology
    DOI
    10.1111/cmi.12397
    PubMed ID
    25410299
    Additional Links
    http://doi.wiley.com/10.1111/cmi.12397
    ae974a485f413a2113503eed53cd6c53
    10.1111/cmi.12397
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Bioscience Program; Integrative Systems Biology Lab; Computational Bioscience Research Center (CBRC); Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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