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Escherichia coli

  • Open Access
    Preconceptual Priming Overrides Susceptibility to <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Systemic Infection during Pregnancy
    Editor's Pick Research Article | Host-Microbe Biology
    Preconceptual Priming Overrides Susceptibility to Escherichia coli Systemic Infection during Pregnancy

    Pregnancy makes women especially vulnerable to infection. The most common cause of bloodstream infection during pregnancy is by a bacterium called Escherichia coli.

    Nina Salinger Prasanphanich, Emily J. Gregory, John J. Erickson, Hilary Miller-Handley, Jeremy M. Kinder, Sing Sing Way
  • Open Access
    Discovery of Bacterial Fimbria–Glycan Interactions Using Whole-Cell Recombinant <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Expression
    Research Article | Host-Microbe Biology
    Discovery of Bacterial Fimbria–Glycan Interactions Using Whole-Cell Recombinant Escherichia coli Expression

    Understanding the tropism of pathogens for host and tissue requires a complete understanding of the host receptors targeted by fimbrial adhesins. Furthermore, blocking adhesion is a promising strategy to counter increasing antibiotic resistance and is enabled by the identification of host receptors.

    Christopher J. Day, Alvin W. Lo, Lauren E. Hartley-Tassell, M. Pilar Argente, Jessica Poole, Nathan P. King, Joe Tiralongo, Michael P. Jennings, Mark A. Schembri
  • Open Access
    How Phagocytic Cells Kill Different Bacteria: a Quantitative Analysis Using <span class="named-content genus-species" id="named-content-1">Dictyostelium discoideum</span>
    Editor's Pick Research Article | Host-Microbe Biology
    How Phagocytic Cells Kill Different Bacteria: a Quantitative Analysis Using Dictyostelium discoideum

    Phagocytic cells ingest and kill bacteria, a process essential for the defense of the human body against infections. Many potential killing mechanisms have been identified in phagocytic cells, including free radicals, toxic ions, enzymes, and permeabilizing peptides.

    Tania Jauslin, Otmane Lamrabet, Xenia Crespo-Yañez, Anna Marchetti, Imen Ayadi, Estelle Ifrid, Cyril Guilhen, Matthias Leippe, Pierre Cosson
  • Open Access
    5-Aminosalicylic Acid Ameliorates Colitis and Checks Dysbiotic <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Expansion by Activating PPAR-γ Signaling in the Intestinal Epithelium
    Research Article | Host-Microbe Biology
    5-Aminosalicylic Acid Ameliorates Colitis and Checks Dysbiotic Escherichia coli Expansion by Activating PPAR-γ Signaling in the Intestinal Epithelium

    An expansion of Enterobacterales in the fecal microbiota is a microbial signature of dysbiosis that is linked to many noncommunicable diseases, including ulcerative colitis. Here, we used Escherichia coli, a representative of the Enterobacterales, to show that its dysbiotic expansion during colitis can be remediated by modulating host epithelial...

    Stephanie A. Cevallos, Jee-Yon Lee, Eric M. Velazquez, Nora J. Foegeding, Catherine D. Shelton, Connor R. Tiffany, Beau H. Parry, Annica R. Stull-Lane, Erin E. Olsan, Hannah P. Savage, Henry Nguyen, Star S. Ghanaat, Austin J. Byndloss, Ilechukwu O. Agu, Renée M. Tsolis, Mariana X. Byndloss, Andreas J. Bäumler
  • Open Access
    Availability of the Molecular Switch XylR Controls Phenotypic Heterogeneity and Lag Duration during <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Adaptation from Glucose to Xylose
    Research Article | Applied and Environmental Science
    Availability of the Molecular Switch XylR Controls Phenotypic Heterogeneity and Lag Duration during Escherichia coli Adaptation from Glucose to Xylose

    For decades, it was thought that the lags observed when microorganisms switch from one substrate to another are inherent to the time required to adapt the molecular machinery to the new substrate. Here, the lag duration was found to be the time necessary for a subpopulation of adapted cells to emerge and become the main population.

    Manon Barthe, Josué Tchouanti, Pedro Henrique Gomes, Carine Bideaux, Delphine Lestrade, Carl Graham, Jean-Philippe Steyer, Sylvie Meleard, Jérôme Harmand, Nathalie Gorret, Muriel Cocaign-Bousquet, Brice Enjalbert
  • Open Access
    Adaptation of Arginine Synthesis among Uropathogenic Branches of the <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Phylogeny Reveals Adjustment to the Urinary Tract Habitat
    Editor's Pick Research Article | Host-Microbe Biology
    Adaptation of Arginine Synthesis among Uropathogenic Branches of the Escherichia coli Phylogeny Reveals Adjustment to the Urinary Tract Habitat

    Uropathogenic Escherichia coli (UPEC) is the most common cause of human urinary tract infection (UTI). Population bottlenecks during early stages of UTI make high-throughput screens impractical for understanding clinically important later stages of UTI, such as persistence and recurrence. As UPEC is hypothesized to be adapted to these later pathogenic stages, we...

    Michael E. Hibbing, Karen W. Dodson, Vasilios Kalas, Swaine L. Chen, Scott J. Hultgren
  • Open Access
    Gene Dispensability in <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Grown in Thirty Different Carbon Environments
    Research Article | Molecular Biology and Physiology
    Gene Dispensability in Escherichia coli Grown in Thirty Different Carbon Environments

    While there has been much study of bacterial gene dispensability, there is a lack of comprehensive genome-scale examinations of the impact of gene deletion on growth in different carbon sources. In this context, a lot can be learned from such experiments in the model microbe Escherichia coli where much is already understood and there are existing tools for the...

    Madeline Tong, Shawn French, Sara S. El Zahed, Wai kit Ong, Peter D. Karp, Eric D. Brown
  • Open Access
    A Novel High-Potency Tetanus Vaccine
    Editor's Pick Research Article | Therapeutics and Prevention
    A Novel High-Potency Tetanus Vaccine

    Chemical inactivation is a clinically effective mechanism to detoxify protein toxins to produce vaccines against microbial infections and to serve as a platform for production of conjugate polysaccharide vaccines. This method is widely used for the production of protein toxin vaccines, including tetanus toxoid. However, chemical modification alters the protein structure with unknown effects on antigenicity. Here, a recombinant full-...

    Amanda Przedpelski, William H. Tepp, Sabine Pellett, Eric A. Johnson, Joseph T. Barbieri
  • Open Access
    Phage-Antibiotic Synergy Is Driven by a Unique Combination of Antibacterial Mechanism of Action and Stoichiometry
    Research Article | Therapeutics and Prevention
    Phage-Antibiotic Synergy Is Driven by a Unique Combination of Antibacterial Mechanism of Action and Stoichiometry

    Bacteriophage (phage) therapy is a promising approach to combat the rise of multidrug-resistant bacteria. Currently, the preferred clinical modality is to pair phage with an antibiotic, a practice thought to improve efficacy. However, antagonism between phage and antibiotics has been reported, the choice of phage and antibiotic is not often empirically determined, and the effect of the host factors on the effectiveness is unknown. Here...

    Carmen Gu Liu, Sabrina I. Green, Lorna Min, Justin R. Clark, Keiko C. Salazar, Austen L. Terwilliger, Heidi B. Kaplan, Barbara W. Trautner, Robert F. Ramig, Anthony W. Maresso
  • Open Access
    Tumble Suppression Is a Conserved Feature of Swarming Motility
    Observation | Molecular Biology and Physiology
    Tumble Suppression Is a Conserved Feature of Swarming Motility

    Bacteria within a swarm move characteristically in packs, displaying an intricate swirling motion in which hundreds of dynamic rafts continuously form and dissociate as the swarm colonizes an increasing expanse of territory. The demonstrated property of E. coli to reduce its tumble bias and hence increase its run duration during swarming is expected to maintain and...

    Jonathan D. Partridge, Nguyen T. Q. Nhu, Yann S. Dufour, Rasika M. Harshey

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