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- Title
Continuous T cell receptor signaling required for synapse maintenance and full effector potential.
- Authors
Huppa, Johannes B; Gleimer, Michael; Sumen, Cenk; Davis, Mark M
- Abstract
Although signals through the T cell receptor (TCR) are essential for the initiation of T helper cell activation, it is unclear what function such signals have during the prolonged T cell-antigen-presenting cell contact. Here we simultaneously tracked TCR-CD3 complex and phosphoinositide 3-kinase activity in single T cells using three-dimensional video microscopy. Despite rapid internalization of most of the TCR-CD3, TCR-dependent signaling was still evident up to 10 h after conjugate formation. Blocking this interaction caused dissolution of the synapse and proportional reductions in interleukin 2 production and cellular proliferation. Thus TCR signaling persists for hours, has a cumulative effect and is necessary for the maintenance of the immunological synapse.
- Publication
Nature immunology, 2003, Vol 4, Issue 8, p749
- ISSN
1529-2908
- Publication type
Journal Article
- DOI
10.1038/ni951