Affiliation:
1. Imperial Cancer Research Fund, Lincoln's Inn Fields, London WC2A 3PX, 1 and
2. Glaxo Wellcome, Stevenage, Herts SG1 2NY, 2 United Kingdom
Abstract
ABSTRACT
DR3 (Ws1, Apo3, LARD, TRAMP, TNFSFR12) is a member of the death domain-containing tumor necrosis factor receptor (TNFR) superfamily, members of which mediate a variety of developmental events including the regulation of cell proliferation, differentiation, and apoptosis. We have investigated the in vivo role(s) of DR3 by generating mice congenitally deficient in the expression of the DR3 gene. We show that negative selection and anti-CD3-induced apoptosis are significantly impaired in DR3-null mice. In contrast, both superantigen-induced negative selection and positive selection are normal. The pre-T-cell receptor-mediated checkpoint, which is dependent on TNFR signaling, is also unaffected in DR3-deficient mice. These data reveal a nonredundant in vivo role for this TNF receptor family member in the removal of self-reactive T cells in the thymus.
Publisher
American Society for Microbiology
Subject
Cell Biology,Molecular Biology
Cited by
98 articles.
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