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Activation-Induced Polarized Recycling Targets T Cell Antigen Receptors to the Immunological Synapse

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Das, Vincent, Nal, Béatrice, Dujeancourt, Annick, Thoulouze, Maria-Isabel, Galli, Thierry, Roux, Pascal, Dautry-Varsat, Alice, Alcover, Andrés·2004·Immunity

Abstract

The mechanism by which T cell antigen receptors (TCR) accumulate at the immunological synapse has not been fully elucidated. Since TCRs are continuously internalized and recycled back to the cell surface, we investigated the role of polarized recycling in TCR targeting to the immunological synapse. We show here that the recycling endosomal compartment of T cells encountering activatory antigen-presenting cells (APCs) polarizes towards the T cell-APC contact site. Moreover, TCRs in transit through recycling endosomes are targeted to the immunological synapse. Inhibition of T cell polarity, constitutive TCR endocytosis, or recycling reduces TCR accumulation at the immunological synapse. Conversely, increasing the amount of TCRs in recycling endosomes before synapse formation enhanced their accumulation. Finally, we show that exocytic t-SNAREs from T cells cluster at the APC contact site and that tetanus toxin inhibits TCR accumulation at the immunological synapse, indicating that vesicle fusion mediated by SNARE complexes is involved in TCR targeting to the immunological synapse.

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Metadata

Authors
Das, V., Nal, B., Dujeancourt, A., Thoulouze, M.-I., Galli, T., Roux, P., Dautry-Varsat, A., & Alcover, A.
Venue
Immunity
Publisher
Elsevier BV
Published
2004-05
Volume
20
Issue
5
Pages
577-588
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2008602824
Cited by
294
References
0
FWCI
6.41
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Activation-Induced Polarized Recycling Targets T Cell Antigen Receptors to the Immunological Synapse. https://app.cochat.ai/papers/10.1016/s1074-7613(04)00106-2
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Das, V., Nal, B., Dujeancourt, A., Thoulouze, M.-I., Galli, T., Roux, P., Dautry-Varsat, A., & Alcover, A. (2004). Activation-Induced Polarized Recycling Targets T Cell Antigen Receptors to the Immunological Synapse. Immunity. https://doi.org/10.1016/s1074-7613(04)00106-2

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