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Research Article

DECREASED T CELL ERK PATHWAY SIGNALING MAY CONTRIBUTE TO THE DEVELOPMENT OF LUPUS THROUGH EFFECTS ON DNA METHYLATION AND GENE EXPRESSION

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Pages 315-331 | Published online: 03 Aug 2009
 

Abstract

T cells from patients with active lupus have multiple biochemical abnormalities. One of these is DNA hypomethylation, which in model systems alters gene expression and induces lupus-like autoimmunity. Recent reports indicate that DNA methylation is regulated in part by the ERK pathway, and that ERK pathway signaling is diminished in lupus T cells. This suggests a model in which defective T cell ERK pathway signaling contributes to the development of autoimmunity by decreasing DNA methyltransferase expression, modifying DNA methylation patterns and altering gene expression. This mechanism could contribute to idiopathic and drug-induced lupus.

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