1,568 results found
    1. Epidemiology and Global Health

    The effects of a deleterious mutation load on patterns of influenza A/H3N2's antigenic evolution in humans

    Katia Koelle, David A Rasmussen
    Deleterious mutations slow down flu's antigenic evolution, make it more punctuated in nature, and reduce the virus's genetic diversity.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Integrating influenza antigenic dynamics with molecular evolution

    Trevor Bedford et al.
    Combined antigenic and genetic analysis shows that different strains of the human influenza virus display dramatically different rates of antigenic drift, and that these differences have a significant impact on the number of new infections in each flu season.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Asynchrony between virus diversity and antibody selection limits influenza virus evolution

    Dylan H Morris et al.
    Despite the virus' error prone polymerase, influenza virus antigenic evolution is rare, even in previously immune hosts, virus replication occurs before producing new antibodies.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Dengue genetic divergence generates within-serotype antigenic variation, but serotypes dominate evolutionary dynamics

    Sidney M Bell et al.
    Each dengue serotype contains moderate antigenic diversity, and population immunity drives clade turnover in a hyperendemic population.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    The inherent mutational tolerance and antigenic evolvability of influenza hemagglutinin

    Bargavi Thyagarajan, Jesse D Bloom
    Deep mutational scanning was used to comprehensively quantify the effects of mutations to influenza hemagglutinin and shows that the virus possesses a high inherent mutational tolerance at key antigenic sites.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Extended low-resolution structure of a Leptospira antigen offers high bactericidal antibody accessibility amenable to vaccine design

    Ching-Lin Hsieh et al.
    The antibody accessibility of the leptospiral surface protein, LigB, provides a guide for the rational design of improved recombinant chimeric vaccine antigens displayed on a single domain scaffold.
    1. Evolutionary Biology

    Evidence for adaptive evolution in the receptor-binding domain of seasonal coronaviruses OC43 and 229e

    Kathryn E Kistler, Trevor Bedford
    Phylogenetic and computational methods reveal that at least two seasonal coronaviruses are evolving adaptively in the region of the viral spike protein exposed to the human humoral immune system.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Distinct clonal evolution of B-cells in HIV controllers with neutralizing antibody breadth

    Deniz Cizmeci et al.
    Extended somatic hypermutation and clonal evolution associated with antibody neutralization breath in HIV controllers with low plasma viral loads provide promise for HIV vaccine development.
    1. Structural Biology and Molecular Biophysics
    2. Immunology and Inflammation

    Structural basis for germline antibody recognition of HIV-1 immunogens

    Louise Scharf et al.
    Structural and computational analyses of germline antibody/HIV-1 gp120 complexes provide both general principles relevant to the unusual evolution of potent CD4-binding site antibodies and guidelines for structure-based immunogen design.
    1. Immunology and Inflammation

    B cell activation involves nanoscale receptor reorganizations and inside-out signaling by Syk

    Kathrin Kläsener et al.
    Studying the earliest events in B cell activation reveals that the B cell antigen receptor is opened and activated via the phosphorylation and binding by the spleen tyrosine kinase (Syk).

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