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metabolism

  • Open Access
    Designing the Next Generation of Vaccines: Relevance for Future Pandemics
    Minireview | Therapeutics and Prevention
    Designing the Next Generation of Vaccines: Relevance for Future Pandemics

    The development of vaccines is one of the greatest medical interventions in the history of global infectious diseases and has contributed to the annual saving of at least 2 to 3 million lives worldwide. However, many diseases are not preventable through currently available vaccines, and the potential of modulating the immune response during vaccination has not been fully exploited.

    Jorge Domínguez-Andrés, Reinout van Crevel, Maziar Divangahi, Mihai G. Netea
  • Open Access
    Nitric Oxide Circumvents Virus-Mediated Metabolic Regulation during Human Cytomegalovirus Infection
    Research Article | Host-Microbe Biology
    Nitric Oxide Circumvents Virus-Mediated Metabolic Regulation during Human Cytomegalovirus Infection

    Human cytomegalovirus is a prevalent pathogen that can cause serious disease in patients with compromised immune systems, including transplant patients and during congenital infection. HCMV lytic replication likely occurs in localized sites of infection with immune cells infiltrating and releasing nitric oxide with other effector molecules.

    Rebekah L. Mokry, Megan L. Schumacher, Neil Hogg, Scott S. Terhune
  • Open Access
    Genes Contributing to the Unique Biology and Intrinsic Antibiotic Resistance of <span class="named-content genus-species" id="named-content-1">Enterococcus faecalis</span>
    Editor's Pick Research Article | Molecular Biology and Physiology
    Genes Contributing to the Unique Biology and Intrinsic Antibiotic Resistance of Enterococcus faecalis

    Enterococci are leading causes of antibiotic-resistant infection transmitted in hospitals. The intrinsic hardiness of these organisms allows them to survive disinfection practices and then proliferate in the gastrointestinal tracts of antibiotic-treated patients. The objective of this study was to identify the underlying genetic basis for its unusual hardiness. Using a functional genomic approach, we identified traits and pathways of...

    Michael S. Gilmore, Rauf Salamzade, Elizabeth Selleck, Noelle Bryan, Suelen S. Mello, Abigail L. Manson, Ashlee M. Earl
  • Open Access
    <span class="named-content genus-species" id="named-content-1">Plasmodium falciparum</span> Apicomplexan-Specific Glucosamine-6-Phosphate <em>N</em>-Acetyltransferase Is Key for Amino Sugar Metabolism and Asexual Blood Stage Development
    Research Article | Molecular Biology and Physiology
    Plasmodium falciparum Apicomplexan-Specific Glucosamine-6-Phosphate N-Acetyltransferase Is Key for Amino Sugar Metabolism and Asexual Blood Stage Development

    Apicomplexan parasites cause a major burden on global health and economy. The absence of treatments, the emergence of resistances against available therapies, and the parasite’s ability to manipulate host cells and evade immune systems highlight the urgent need to characterize new drug targets to treat infections caused by these parasites. We demonstrate that glucosamine-6-phosphate N-acetyltransferase (GNA1), required for the...

    Jordi Chi, Marta Cova, Matilde de las Rivas, Ana Medina, Rafael Junqueira Borges, Pablo Leivar, Antoni Planas, Isabel Usón, Ramón Hurtado-Guerrero, Luis Izquierdo
  • Open Access
    Invertases in <span class="named-content genus-species" id="named-content-1">Phytophthora infestans</span> Localize to Haustoria and Are Programmed for Infection-Specific Expression
    Research Article | Host-Microbe Biology
    Invertases in Phytophthora infestans Localize to Haustoria and Are Programmed for Infection-Specific Expression

    Oomycetes cause hundreds of diseases in economically and environmentally significant plants. How these microbes acquire host nutrients is not well understood. Many oomycetes insert specialized hyphae called haustoria into plant cells, but unlike their fungal counterparts, a role in nutrition has remained unproven. The discovery that Phytophthora invertases localize to haustoria provides the first strong evidence that these...

    Meenakshi S. Kagda, Domingo Martínez-Soto, Audrey M. V. Ah-Fong, Howard S. Judelson
  • Open Access
    Impact of Facultative Bacteria on the Metabolic Function of an Obligate Insect-Bacterial Symbiosis
    Research Article | Host-Microbe Biology
    Impact of Facultative Bacteria on the Metabolic Function of an Obligate Insect-Bacterial Symbiosis

    Although microbial colonization of the internal tissues of animals generally causes septicemia and death, various animals are persistently associated with benign or beneficial microorganisms in their blood or internal organs. The metabolic consequences of these persistent associations for the animal host are largely unknown. Our research on the facultative bacterium Hamiltonella, localized primarily to the hemolymph of pea...

    Frances Blow, Nana Y. D. Ankrah, Noah Clark, Imhoi Koo, Erik L. Allman, Qing Liu, Mallappa Anitha, Andrew D. Patterson, Angela E. Douglas
  • Open Access
    Expression of the Long Noncoding RNA DINO in Human Papillomavirus-Positive Cervical Cancer Cells Reactivates the Dormant TP53 Tumor Suppressor through ATM/CHK2 Signaling
    Research Article | Molecular Biology and Physiology
    Expression of the Long Noncoding RNA DINO in Human Papillomavirus-Positive Cervical Cancer Cells Reactivates the Dormant TP53 Tumor Suppressor through ATM/CHK2 Signaling

    Functional restoration of the TP53 tumor suppressor holds great promise for anticancer therapy. Current strategies are focused on modulating TP53 regulatory proteins. Long noncoding RNAs (lncRNAs) have emerged as important regulators of TP53 as well as modulators of downstream tumor-suppressive transcriptional responses. Unlike many other cancer types, human papillomavirus (HPV)-positive cancer cells retain wild-type TP53 that is...

    Surendra Sharma, Karl Munger
  • Open Access
    Multiple Alternative Carbon Pathways Combine To Promote <span class="named-content genus-species" id="named-content-1">Candida albicans</span> Stress Resistance, Immune Interactions, and Virulence
    Research Article | Host-Microbe Biology
    Multiple Alternative Carbon Pathways Combine To Promote Candida albicans Stress Resistance, Immune Interactions, and Virulence

    Candida albicans is a fungal pathogen and a significant cause of morbidity and mortality, particularly in people with defects, sometimes minor ones, in innate immunity. The phagocytes of the innate immune system, particularly macrophages and neutrophils, generally restrict this organism to its normal commensal niches, but...

    Robert B. Williams, Michael C. Lorenz
  • Open Access
    The Metabolite Repair Enzyme Phosphoglycolate Phosphatase Regulates Central Carbon Metabolism and Fosmidomycin Sensitivity in <span class="named-content genus-species" id="named-content-1">Plasmodium falciparum</span>
    Research Article | Host-Microbe Biology
    The Metabolite Repair Enzyme Phosphoglycolate Phosphatase Regulates Central Carbon Metabolism and Fosmidomycin Sensitivity in Plasmodium falciparum

    The malaria parasite has a voracious appetite, requiring large amounts of glucose and nutrients for its rapid growth and proliferation inside human red blood cells. The host cell is resource rich, but this is a double-edged sword; nutrient excess can lead to undesirable metabolic reactions and harmful by-products. Here, we demonstrate that the parasite possesses a metabolite repair enzyme (PGP) that suppresses harmful metabolic by-...

    Laure Dumont, Mark B. Richardson, Phillip van der Peet, Danushka S. Marapana, Tony Triglia, Matthew W. A. Dixon, Alan F. Cowman, Spencer J. Williams, Leann Tilley, Malcolm J. McConville, Simon A. Cobbold
  • Open Access
    Stochastic Variation in Expression of the Tricarboxylic Acid Cycle Produces Persister Cells
    Research Article | Molecular Biology and Physiology
    Stochastic Variation in Expression of the Tricarboxylic Acid Cycle Produces Persister Cells

    Persister cells are rare phenotypic variants that are able to survive antibiotic treatment. Unlike resistant bacteria, which have specific mechanisms to prevent antibiotics from binding to their targets, persisters evade antibiotic killing by entering a tolerant nongrowing state. Persisters have been implicated in chronic infections in multiple species, and growing evidence suggests that persister cells are responsible for many cases of...

    Eliza A. Zalis, Austin S. Nuxoll, Sylvie Manuse, Geremy Clair, Lauren C. Radlinski, Brian P. Conlon, Joshua Adkins, Kim Lewis

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