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Review
. 2014 Jun;47(4):234-41.
doi: 10.3109/08916934.2013.801462. Epub 2014 Apr 24.

Epigenetic regulation of cytokine expression in systemic lupus erythematosus with special focus on T cells

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Free article
Review

Epigenetic regulation of cytokine expression in systemic lupus erythematosus with special focus on T cells

Christian M Hedrich et al. Autoimmunity. 2014 Jun.
Free article

Abstract

Epigenetic events play a central role in the priming, differentiation and subset determination of T lymphocytes. Through their influence on chromatin conformation and DNA-accessibility to transcription factors and RNA polymerases, epigenetic marks allow or prevent gene expression and control cellular functions including cytokine expression. CpG-DNA methylation and post-translational modifications to histone tails are the two most well accepted epigenetic mechanisms. The involvement of epigenetic mechanisms in the pathogenesis of systemic lupus erythematosus (SLE) has been suggested by the development of lupus-like symptoms by individuals who received procainamide or hydralazine treatment resulting in a reduction of CpG-DNA methylation. To date, a growing body of literature indicates that the deregulation of cytokine expression through epigenetic disturbances can result in altered immune responses and autoimmune reactions. Over the past decade, various global and regional epigenetic alterations have been reported in immune cells from patients with SLE and other autoimmune disorders. More recently, the molecular mechanisms that result in epigenetic disturbances have been addressed, and deregulated transcription factor networks have been demonstrated to mediate epigenetic alterations in B and T lymphocytes from SLE patients. A better understanding of the molecular events that contribute to epigenetic alterations and subsequent immune imbalance is essential for the establishment of disease biomarkers and identification of potential therapeutic targets.

Keywords: Autoimmune disease; SLE; chromatin; epigenetic; inflammation.

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