Department of Dermatology, University of Michigan, Ann Arbor, Michigan 48109, USA.
J Invest Dermatol. 2012 Mar;132(3 Pt 1):506-8. doi: 10.1038/jid.2011.364.
DNA methylation is one of several epigenetic mechanisms that can lead to stable and heritable changes in gene expression without changing the underlying DNA sequence. In this issue, Roberson et al. demonstrate that lesional skin in psoriasis is accompanied by changes in DNA methylation, which revert back to baseline with treatment, indicating that DNA methylation in psoriasis is dynamic.
DNA 甲基化是几种表观遗传机制之一,它可以导致基因表达的稳定和可遗传的变化,而不会改变潜在的 DNA 序列。在本期杂志中,Roberson 等人证明,银屑病皮损伴随着 DNA 甲基化的变化,这些变化在治疗后恢复到基线水平,表明银屑病中的 DNA 甲基化是动态的。