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Orchestrating cytoskeleton and intracellular vesicle traffic to build functional immunological synapses

Abstract : Immunological synapses are specialized cell–cell contacts formed between T lymphocytes and antigen-presenting cells. They are induced upon antigen recognition and are crucial for T-cell activation and effector functions. The generation and function of immunological synapses depend on an active T-cell polarization process, which results from a finely orchestrated crosstalk between the antigen receptor signal transduction machinery, the actin and microtubule cytoskeletons, and controlled vesicle traffic. Although we understand how some of these particular events are regulated, we still lack knowledge on how these multiple cellular elements are harmonized to ensure appropriate T-cell responses. We discuss here our view on how T-cell receptor signal transduction initially commands cytoskeletal and vesicle traffic polarization , which in turn sets the immunological synapse molecular design that regulates T-cell activation. We also discuss how the human immu-nodeficiency virus (HIV-1) hijacks some of these processes impairing immunological synapse generation and function.
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Submitted on : Friday, September 23, 2016 - 6:11:48 PM
Last modification on : Monday, January 13, 2020 - 5:08:07 PM

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Helena Soares, Rémi Lasserre, Andrés Alcover. Orchestrating cytoskeleton and intracellular vesicle traffic to build functional immunological synapses. Immunological Reviews, Wiley, 2013, 256 (1), pp.118 - 132. ⟨10.1111/imr.12110⟩. ⟨pasteur-01371059⟩

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