| Literature DB >> 11694883 |
R K Leung1, K Thomson, A Gallimore, E Jones, M Van den Broek, S Sierro, A R Alsheikhly, A McMichael, A Rahemtulla.
Abstract
The mechanism of T cell lineage commitment remains controversial; to examine it we deleted the CD4-silencer element in the germ line of a mouse using a combination of gene targeting and Cre/LoxP-mediated recombination. We found that these mice were unable to extinguish CD4 expression either in immature thymocytes or mature CD8+ cytotoxic T cells (CTLs), which resulted in the development of major histocompatibility complex class II-restricted double-positive CTLs in the periphery. This finding strongly supports a stochastic over an instructive mechanism of coreceptor down-regulation.Entities:
Mesh:
Substances:
Year: 2001 PMID: 11694883 DOI: 10.1038/ni733
Source DB: PubMed Journal: Nat Immunol ISSN: 1529-2908 Impact factor: 25.606