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Epigenetics in rheumatoid arthritis: a primer for rheumatologists.
MedLine Citation:
PMID:  24072602     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Epigenetic anomalies are emerging as key pathogenic features of rheumatoid arthritis (RA). The effect of epigenetics in RA ranges from contributing to complex disease mechanisms to identifying biomarkers for early diagnosis and response to therapy. This review focuses on three key epigenetic areas in RA, namely DNA methylation, histone modification, and expression and/or function of microRNAs. Epigenomics studies of DNA methylation have identified alterations of genome-wide DNA methylation in cells from patients with rheumatoid arthritis. Histone modification studies have focused on histone acetylation, which tends to be increased in RA. Preclinical studies show that inhibitors of histone deacetylases are effective in cellular and animal models of RA. Genome-wide and candidate microRNA surveys identified increased or reduced expression of selected microRNAs in rheumatoid arthritis. These microRNA are either pro or anti-inflammatory in multiple cell types or affect osteoclast physiology and the pathogenesis of bone erosion. Defining epigenetic contributions to the pathogenesis of RA, especially in combination with understanding genetic associations, could lead to novel therapy and a clearer understanding of disease risk.
Authors:
Nunzio Bottini; Gary S Firestein
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Current rheumatology reports     Volume:  15     ISSN:  1534-6307     ISO Abbreviation:  Curr Rheumatol Rep     Publication Date:  2013 Nov 
Date Detail:
Created Date:  2013-09-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888970     Medline TA:  Curr Rheumatol Rep     Country:  United States    
Other Details:
Languages:  eng     Pagination:  372     Citation Subset:  IM    
Affiliation:
La Jolla Institute for Allergy and Immunology, La Jolla, CA, USA, nunzio@liai.org.
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