Role of miRNAs in Rheumatoid Arthritis Therapy

Area of Science:

• Molecular Biology
• Immunology
• Rheumatology

Background:

• Rheumatoid arthritis (RA) is a chronic inflammatory disease causing joint destruction and disability.
• Current RA treatments have limitations in efficacy, safety, and cost.
• MicroRNAs (miRNAs) are non-coding RNAs regulating gene expression; their dysregulation is implicated in RA.

Purpose of the Study:

• To review the multifaceted roles of miRNAs in RA pathophysiology.
• To highlight the potential of miRNAs as diagnostic biomarkers and therapeutic targets for RA.

Main Methods:

• Literature review of studies on miRNA involvement in RA.
• Analysis of miRNA regulatory effects on immune cells, synovial fibroblasts, inflammation, and angiogenesis.
• Exploration of therapeutic strategies targeting miRNA activity.

Main Results:

• miRNAs influence immune cell imbalance (Treg/Th17, M1/M2 polarization) and fibroblast-like synovial (FLS) cell behavior.
• miRNAs regulate key inflammatory pathways (NF-κB/NLRP3), angiogenesis, and cellular processes like apoptosis and osteogenesis in RA.
• miRNA mimics, exosomes, and ceRNA network antagonists represent potential therapeutic modalities.

Conclusions:

• miRNAs are critical regulators in RA pathogenesis, affecting multiple disease aspects.
• Dysregulated miRNAs present opportunities for novel RA diagnostic biomarkers and therapeutic interventions.
• miRNA-based strategies, including modulation and antagonism, show significant promise for future RA treatment.