Differential remodeling of a T-cell transcriptome following CD8- versus CD3-induced signaling.

Abstract:

:CD8 engagement with class I major histocompatibility antigens greatly enhances T-cell activation, but it is not clear how this is achieved. We address the question of whether or not the antibody-mediated ligation of CD8 alone induces transcriptional remodeling in a T-cell clone, using serial analysis of gene expression. Even though it fails to induce overt phenotypic changes, we find that CD8 ligation profoundly alters transcription in the T-cell clone, at a scale comparable to that induced by antibody-mediated ligation of CD3. The character of the resulting changes is distinct, however, with the net effect of CD8 ligation being substantially inhibitory. We speculate that ligating CD8 induces weak, T-cell receptor (TCR)-mediated inhibitory signals reminiscent of the effects of TCR antagonists. Our results imply that CD8 ligation alone is incapable of activating the T-cell clone because it fails to fully induce NFAT-dependent transcription.

journal_name

Cell Res

journal_title

Cell research

authors

Abidi SH,Dong T,Vuong MT,Sreenu VB,Rowland-Jones SL,Evans EJ,Davis SJ

doi

10.1038/cr.2008.56

subject

Has Abstract

pub_date

2008-06-01 00:00:00

pages

641-8

issue

6

eissn

1001-0602

issn

1748-7838

pii

cr200856

journal_volume

18

pub_type

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