5,882 results found
    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).
    1. Immunology and Inflammation

    IgM and IgD B cell receptors differentially respond to endogenous antigens and control B cell fate

    Mark Noviski et al.
    Self-reactive B cells downregulate the IgM but not the IgD B cell receptor, and this serves as a critical tolerance mechanism because IgD is less sensitive to bona fide endogenous antigens than IgM.
    1. Immunology and Inflammation

    The quantity of CD40 signaling determines the differentiation of B cells into functionally distinct memory cell subsets

    Takuya Koike et al.
    Unveiling a mechanism for the fate decision of B-cell differentiation into two functionally distinct memory B cell subsets.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Malaria-associated atypical memory B cells exhibit markedly reduced B cell receptor signaling and effector function

    Silvia Portugal et al.
    Atypical memory B cells (MBCs) appear to differentiate from classical MBCs during chronic exposure to the malaria parasite Plasmodium falciparum, and may interfere with the acquisition of immunity to the disease.
    1. Cell Biology
    2. Immunology and Inflammation

    Arp2/3 complex-driven spatial patterning of the BCR enhances immune synapse formation, BCR signaling and B cell activation

    Madison Bolger-Munro et al.
    Arp2/3 complex-mediated actin polymerization shapes how B lymphocytes probe the surface of antigen-presenting cells, promotes coalescence of B cell receptor (BCR) microclusters, amplifies BCR signaling, and enhances B cell activation.
    1. Immunology and Inflammation

    Tuning of in vivo cognate B-T cell interactions by Intersectin 2 is required for effective anti-viral B cell immunity

    Marianne Burbage et al.
    Intersectin2 deficiency is associated with impaired humoral responses to viral infection and B-cell-intrisic defects in germinal centre formation, resulting from the reduced ability of intersectin2-KO B cells to establish cognate interactions with helper T cells.
    1. Cell Biology
    2. Immunology and Inflammation

    Substrate stiffness governs the initiation of B cell activation by the concerted signaling of PKCβ and focal adhesion kinase

    Samina Shaheen et al.
    The combination of molecular imaging, genetic and pharmacological approaches revealed that BCR signaling and PKCβ-dependent activation of focal adhesion kinase (FAK) is required for B cell mechanosensing.
    1. Cell Biology
    2. Immunology and Inflammation

    Regulation of B cell fate by chronic activity of the IgE B cell receptor

    Zhiyong Yang et al.
    The immunoglobulin E (IgE) B cell receptor promotes plasma cell differentiation in the absence of cognate antigen and limits the competitive fitness of IgE+ B cells in germinal centers.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Plasmodium-specific atypical memory B cells are short-lived activated B cells

    Damián Pérez-Mazliah et al.
    Plasmodium-specific atypical memory B cells generated to naturally (mosquito) transmitted rodent malaria infection are short-lived activated B cells, and do not prevent resolution of infection or generation of long-lived memory.
    1. Immunology and Inflammation

    IFNγ induces epigenetic programming of human T-bethi B cells and promotes TLR7/8 and IL-21 induced differentiation

    Esther Zumaquero et al.
    IFNγ increases the responsiveness of human B cells to IL-2, TLR7/8 and IL-21 signals and therefore enhances antibody production in inflammatory settings associated with autoimmune or chronic disease.

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