MicroRNAs in rheumatoid arthritis

Area of Science:

• Immunology
• Genetics
• Molecular Biology

Background:

• Rheumatic diseases involve complex genetic and epigenetic factors.
• MicroRNAs (miRNAs) are increasingly recognized for their role in disease pathogenesis.
• Rheumatoid arthritis (RA) research has actively investigated miRNA involvement.

Purpose of the Study:

• To review experimental research on miRNAs and RA.
• To summarize available data on miRNA roles in RA up to January 2015.
• To explore the potential of miRNAs as biomarkers for RA diagnosis, prognosis, and treatment.

Main Methods:

• Literature search of PubMed using keywords "microRNA" and "rheumatoid arthritis" (2008-2015).
• Inclusion of related papers from reference lists.
• Analysis of experimental studies evaluating miRNA expression or function in RA.

Main Results:

• miRNAs exhibit dual roles, acting as pro-inflammatory or anti-inflammatory molecules in various cell types.
• miRNAs function as regulatory agents in RA pathogenesis.
• Studies involved comparing miRNA levels in patients versus controls and functional investigations (overexpression/silencing).

Conclusions:

• miRNAs are critical regulatory molecules in rheumatoid arthritis.
• Multiple miRNA targets have been identified through in vivo, in vitro, and in silico methods.
• Further research is ongoing to establish the clinical efficacy of miRNAs in RA management.