4,310 results found
    1. Immunology and Inflammation

    Opposing effects of T cell receptor signal strength on CD4 T cells responding to acute versus chronic viral infection

    Marco Künzli et al.
    T cell receptor signal strength correlates positively with Th1 generation during acute infection but negatively during chronic infection.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Affinity and dose of TCR engagement yield proportional enhancer and gene activity in CD4+ T cells

    Karmel A Allison et al.
    Pre-existing enhancers interpret T cell signaling strength in an analogue manner to direct quantitative changes in gene expression within the context of an overall digital response.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Human T cell receptor occurrence patterns encode immune history, genetic background, and receptor specificity

    William S DeWitt III et al.
    An analysis of T cell receptor occurrence patterns that accounts for MHC restriction reveals striking imprints of common viral pathogens and patterns of TCR-HLA sequence covariation in a large human cohort.
    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. Biochemistry and Chemical Biology
    2. Immunology and Inflammation

    Calibration of cell-intrinsic interleukin-2 response thresholds guides design of a regulatory T cell biased agonist

    Caleb R Glassman et al.
    A panel of interleukin-2 partial agonists designed to exploit distinct immune cell response thresholds enabled selective activation of regulatory T cells in vivo.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Cytotoxic T cells swarm by homotypic chemokine signalling

    Jorge Luis Galeano Niño et al.
    Killer T cells swarm around tumour targets by accelerating the recruitment of distant T cells, which upon arrival and target engagement augment the chemotactic signal in a positive feedback loop.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Multiple sources of slow activity fluctuations in a bacterial chemosensory network

    Remy Colin et al.
    Single-cell FRET measurements reveal large temporal activity fluctuations within this signaling pathway in Escherichia coli, caused by stochasticity of receptor methylation combined with allosteric interactions and slow rearrangements within receptor clusters.
    1. Physics of Living Systems

    Sperm chemotaxis is driven by the slope of the chemoattractant concentration field

    Héctor Vicente Ramírez-Gómez et al.
    The slope of the chemoattractant concentration gradient is a driving force for sperm chemotaxis, by coordinating the entrainment of information flow between sensing, signaling and motility.
    1. Immunology and Inflammation

    Optogenetic control shows that kinetic proofreading regulates the activity of the T cell receptor

    O Sascha Yousefi et al.
    Controlling the duration of ligand binding to the T cell receptor by light shows that T cells discriminate stimulatory from non-stimulatory ligands by measuring the dynamics of ligand binding.
    1. Cell Biology
    2. Immunology and Inflammation

    Non-canonical antagonism of PI3K by the kinase Itpkb delays thymocyte β-selection and renders it Notch-dependent

    Luise Westernberg et al.
    Antagonistic signaling by the kinases PI3K and Itpkb limits the kinetics and enforces the Notch-dependence of beta-selection – the most important cell-fate determining process in alpha beta T cell development.

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