IRF5:RelA interaction targets inflammatory genes in macrophages.

作者: David G. Saliba , Andreas Heger , Hayley L. Eames , Spyros Oikonomopoulos , Ana Teixeira

DOI: 10.1016/J.CELREP.2014.07.034

关键词:

摘要: Interferon Regulatory Factor 5 (IRF5) plays a major role in setting up an inflammatory macrophage phenotype, but the molecular basis of its transcriptional activity is not fully understood. In this study, we conduct comprehensive genome-wide analysis IRF5 recruitment macrophages stimulated with bacterial lipopolysaccharide and discover that binds to regulatory elements highly transcribed genes. Analysis protein:DNA microarrays demonstrates recognizes canonical IRF-binding (interferon-stimulated response element [ISRE]) motif in vitro. However, binding in vivo appears rely on interactions other proteins. noncanonical composite PU.1:ISRE motif, aided by RelA. Global gene expression deficient RelA highlights direct RelA:IRF5 cistrome regulation subset key We map interaction domain suggest interfering it would offer selective targeting activities.

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