microRNAs as Biomarkers and Therapeutic Targets in Rheumatoid Arthritis

Area of Science:

• Immunology
• Molecular Biology
• Genetics

Background:

• Rheumatoid arthritis (RA) is a chronic autoimmune joint inflammation impacting the synovial membrane.
• Immune cell interactions drive RA pathophysiology, leading to joint damage.
• MicroRNAs (miRs) are critical regulators in RA progression, particularly in synoviocytes and PBMCs.

Purpose of the Study:

• To review the role of miRs in rheumatoid arthritis (RA) pathogenesis.
• To explore miRs as potential biomarkers for RA early detection and severity prediction.
• To discuss miR-targeting therapeutic strategies for RA.

Main Methods:

• Literature review of studies on microRNAs in rheumatoid arthritis.
• Analysis of miR involvement in key RA-related signaling pathways (NF-κB, apoptosis, PI3K/AKT).
• Evaluation of miR mimics and inhibitors as therapeutic agents in preclinical RA models.

Main Results:

• Dysregulated miRs significantly impact RA pathogenesis by affecting cell proliferation, survival, and inflammation.
• miRs influence critical pathways including NF-κB, apoptosis, PI3K/AKT signaling, and cytokine production.
• miR-based therapies, such as mimics and inhibitors, demonstrate potential in animal models, with intra-articular administration showing promise.

Conclusions:

• MicroRNAs play a pivotal role in rheumatoid arthritis pathogenesis and progression.
• miRs hold potential as diagnostic and prognostic biomarkers for RA.
• Targeting miRs offers a promising therapeutic avenue for RA, though clinical application necessitates further investigation and validation.