1,131 results found
    1. Immunology and Inflammation
    2. Physics of Living Systems

    Quantitative modeling of the effect of antigen dosage on B-cell affinity distributions in maturating germinal centers

    Marco Molari et al.
    Detailed and inferred model reproduces B-cell affinity distributions measured in mice immunized according to various protocols and explains non-monotonous effects of antigen dosage on maturation.
    1. Immunology and Inflammation
    2. Physics of Living Systems

    Role of framework mutations and antibody flexibility in the evolution of broadly neutralizing antibodies

    Victor Ovchinnikov et al.
    Computer simulations of the evolution of broadly neutralizing antibodies against HIV suggest that non-traditional pathways involving framework mutations which lead initially to increased antibody flexibility do occur, but can be avoided by appropriate vaccine design.
    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

    Variant proteins stimulate more IgM+ GC B-cells revealing a mechanism of cross-reactive recognition by antibody memory

    Bronwen R Burton et al.
    Investigation of antibody responses to variant Dengue virus proteins demonstrate new mechanisms that could increase the potential for vaccines to protect against mutable pathogens such as Flu, Dengue and HIV.
    1. Immunology and Inflammation

    Intravital quantification reveals dynamic calcium concentration changes across B cell differentiation stages

    Carolin Ulbricht et al.
    Heterogeneity in cytoplasmic calcium concentration alongside B cell activation and differentiation is measured intravitally using an interdisciplinary imaging approach and novel numerical analysis.
    1. Evolutionary Biology

    Binding affinity landscapes constrain the evolution of broadly neutralizing anti-influenza antibodies

    Angela M Phillips et al.
    CR9114, one of the most broadly neutralizing anti-influenza antibodies characterized to date, acquires affinity to divergent HA subtypes sequentially, due to higher order interactions between the nested sets of mutations required for binding each distinct subtype.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Reprogramming the antigen specificity of B cells using genome-editing technologies

    James E Voss et al.
    Antibody paratopes can be added to the human repertoire by CRISPR-Cas9 editing of B lymphocytes using a strategy that allows for hypermutation and class switching of resulting B cell receptors.
    1. Biochemistry and Chemical Biology

    Evolutionary and functional insights into the mechanism underlying body-size-related adaptation of mammalian hemoglobin

    Olga Rapp, Ofer Yifrach
    Hemoglobin affinity and cooperativity reveal mechanistic insights in how the relation between physiology and evolutionary variations shape a protein's molecular property.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The guide sRNA sequence determines the activity level of box C/D RNPs

    Andrea Graziadei et al.
    Integrative structural biology reveals a conformational equilibrium in the Box C/D methylation enzyme that regulates the extent of site-specific 2'-O-rRNA methylation in dependence of the RNA sequence.

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