TRADD interacts with STAT1-alpha and influences interferon-gamma signaling.

Abstract:

:Tumor necrosis factor receptor 1 (TNFR1)-associated death domain protein (TRADD) is essential in recruiting signaling molecules to the TNFR1 receptor complex. Interferon-gamma (IFN-gamma) is a potent activator of macrophages and uses signal transducer and activator of transcription 1-alpha (STAT1-alpha) for signal transduction. Here we demonstrate that IFN-gamma induces the formation of a nuclear-localized TRADD-STAT1-alpha complex. IFN-gamma-mediated STAT1-alpha phosphorylation was prolonged in cells with reduced TRADD expression. Moreover, we noted an increase in IFN-gamma-mediated STAT1-alpha DNA-binding activity, nuclear presence and transcriptional potential in the TRADD knockdown cells. These data indicate that TRADD may be involved in IFN-gamma signaling by forming a complex with STAT1-alpha within the nucleus and regulating IFN-gamma-mediated STAT1-alpha activation.

journal_name

Nat Immunol

journal_title

Nature immunology

authors

Wesemann DR,Qin H,Kokorina N,Benveniste EN

doi

10.1038/ni1025

keywords:

subject

Has Abstract

pub_date

2004-02-01 00:00:00

pages

199-207

issue

2

eissn

1529-2908

issn

1529-2916

pii

ni1025

journal_volume

5

pub_type

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