Intertwined roles of microRNA-155 and metformin in osteoarthritis: Novel potential diagnostic, prognostic, and
Mantana Paisan1, Konstantinos I Papadopoulos2, Alexandra Papadopoulou3
1Department of Research and Development, THAI StemLife, Bangkok 10330, Thailand.
Abstract:
Osteoarthritis (OA) is a chronic joint disease characterized by cartilage degradation, synovial inflammation, and subchondral bone remodelling. Despite its increasing prevalence, effective diagnostic, disease-limiting, and therapeutic strategies remain unattainable. Recent studies have recognized the involvement of microRNA-155 (miR-155) in the pathogenesis of OA and most of its risk factors while also identifying the antidiabetic drug metformin as a potential modulator of disease progression. MiR-155, a key endogenous regulator of the immune system, mechano-transduction, and multiple genetic pathways, interacts with OA targets of cellular energetic and circadian homeostasis, promoting systemic and local articular inflammation, cartilage matrix degradation, and chondrocyte apoptosis. Metformin, widely used for type 2 diabetes, has demonstrated anti-inflammatory, anti-oxidative, and chondroprotective properties in OA, mainly through its activation of adenosine monophosphate-activated protein kinase and inhibition of nuclear factor kappa-B signalling. Enthrallingly, metformin targets the same cellular pathways as miR-155 with emerging evidence also suggesting miR-155 expression modulation, indicating synergistic, potentially disease-modifying effects in OA. This review highlights the central role of miR-155 in OA pathophysiology and its potential as a biomarker for disease diagnosis and progression. MiR-155 targeting - through microRNA therapeutics (mimics/antagomiRs) and/or metformin - could pave the way for innovative treatments, including novel articular delivery systems and cell-based therapies.
Insights
MicroRNA-155 (miR-155) plays a key role in osteoarthritis (OA) development. Targeting miR-155 with metformin offers a promising therapeutic strategy for this chronic joint disease.
Area of Science:
- Biomedical Science
- Molecular Biology
- Pharmacology
Background:
- Osteoarthritis (OA) is a degenerative joint disease with limited treatment options.
- MicroRNA-155 (miR-155) is implicated in OA pathogenesis and inflammation.
- Metformin, an antidiabetic drug, shows chondroprotective effects in OA.
Purpose of the Study:
- To review the role of miR-155 in OA pathophysiology.
- To explore metformin's potential to modulate miR-155 in OA.
- To highlight novel therapeutic strategies targeting miR-155 and metformin for OA.
Main Methods:
- Literature review of studies on miR-155, metformin, and OA.
- Analysis of molecular pathways involving miR-155 and metformin.
- Evaluation of therapeutic potential and biomarker applications.
Main Results:
- miR-155 promotes OA by driving inflammation, cartilage degradation, and chondrocyte apoptosis.
- Metformin exerts anti-inflammatory and chondroprotective effects in OA via AMPK activation and NF-κB inhibition.
- Metformin may modulate miR-155 expression, suggesting synergistic therapeutic potential.
Conclusions:
- miR-155 is a critical factor in OA and a potential diagnostic biomarker.
- Targeting miR-155, potentially with metformin, presents a novel therapeutic avenue for OA.
- Innovative treatments involving miR-155 modulation and metformin could modify OA progression.
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