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NF-κB Activation by the Pre-T Cell Receptor Serves as a Selective Survival Signal in T Lymphocyte Development

Open access
Voll, Reinhard E, Jimi, Eijiro, Phillips, Roderick J, Barber, Domingo F, Rincon, Mercedes, Hayday, Adrian C, Flavell, Richard A, Ghosh, Sankar·2000·Immunity

Abstract

Activation of the transcription factor NF-kappa B and pre-T cell receptor (pre-TCR) expression is tightly correlated during thymocyte development. Inhibition of NF-kappa B in isolated thymocytes in vitro results in spontaneous apoptosis of cells expressing the pre-TCR, whereas inhibition of NF-kappa B in transgenic mice through expression of a mutated, superrepressor form of I kappa B alpha leads to a loss of beta-selected thymocytes. In contrast, the forced activation of NF-kappa B through expression of a dominant-active I kappa B kinase allows differentiation to proceed to the CD4(+)CD8(+) stage in a Rag1(-/-) mouse that cannot assemble the pre-TCR. Therefore, signals emanating from the pre-TCR are mediated at least in part by NF-kappa B, which provides a selective survival signal for developing thymocytes with productive beta chain rearrangements.

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Metadata

Authors
Voll, R. E., Jimi, E., Phillips, R. J., Barber, D. F., Rincon, M., Hayday, A. C., Flavell, R. A., & Ghosh, S.
Venue
Immunity
Publisher
Elsevier BV
Published
2000-11
Volume
13
Issue
5
Pages
677-689
ISSN
1074-7613 (ISSN-L)
OpenAlex
W1967059605
Cited by
277
References
0
FWCI
7.77
Type
journal article
Language
en
Open access
hybrid

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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