57 results found
    1. Cell Biology
    2. Immunology and Inflammation

    Deep-learning-based three-dimensional label-free tracking and analysis of immunological synapses of CAR-T cells

    Moosung Lee et al.
    Rapid, label-free, volumetric, and automated assessment of the immunological synapse dynamics is demonstrated by combining optical diffraction tomography and deep-learning-based segmentation, providing a new option for immunological research.
    1. Cell Biology
    2. Immunology and Inflammation

    Distinct structural and catalytic roles for Zap70 in formation of the immunological synapse in CTL

    Misty R Jenkins et al.
    Inhibition of the catalytic activity of the Zap70 kinase reveals that discrete TCR-regulated events control the remodelling of the actin cytoskeleton when the cytotoxic T cell interacts with its target.
    1. Cell Biology
    2. Computational and Systems Biology

    Kinesin-4 KIF21B limits microtubule growth to allow rapid centrosome polarization in T cells

    Peter Jan Hooikaas et al.
    Kinesin-4 KIF21B promotes rapid reorientation of the microtubule network during formation of immunological synapse in T cells by acting as a pausing and catastrophe-inducing factor that keeps microtubules short.
    1. Cell Biology
    2. Immunology and Inflammation

    Actin foci facilitate activation of the phospholipase C-γ in primary T lymphocytes via the WASP pathway

    Sudha Kumari et al.
    T cell receptor signaling is regulated by newly polymerized F-actin foci at the immunological synapse.
    1. Immunology and Inflammation

    Empty conformers of HLA-B preferentially bind CD8 and regulate CD8+ T cell function

    Jie Geng et al.
    HLA-B*35:01 molecules that are peptide-deficient are thermostable, bind CD8 with higher affinity than their peptide-filled versions, accumulate at immunological synapses and enhance antigen-specific CD8+ T cell immune responses.
    1. Immunology and Inflammation

    Composition and structure of synaptic ectosomes exporting antigen receptor linked to functional CD40 ligand from helper T cells

    David G Saliba et al.
    TCR and CD40L microclusters are linked in synaptic ectosomes (extracellular vesicles) and released in the immunological synapse by helper T cells and induce dendritic cell maturation and cytokine production.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A composition-dependent molecular clutch between T cell signaling condensates and actin

    Jonathon A Ditlev et al.
    Compositional changes alter actin binding by phase separated T cell signaling clusters, enabling cluster movement by distinct actin networks.
    1. Immunology and Inflammation

    Conformational change within the extracellular domain of B cell receptor in B cell activation upon antigen binding

    Zhixun Shen et al.
    Conformational changes occur within extracellular domain of BCR upon antigen engagement, and these conformational changes are related with the strength of BCR activation and are distinct in IgM- and IgG-BCR.
    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

    Calcium influx through CRAC channels controls actin organization and dynamics at the immune synapse

    Catherine A Hartzell et al.
    By restricting actin polymerization to the perimeter of the immune synapse and promoting depolymerization, calcium influx drives centripetal actin flow, which confines CRAC channels and the endoplasmic reticulum to the synapse center.

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