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Extracellular Vesicles in Osteoarthritis: From Pathogenic Mediators to Engineered Therapeutics in a Precision
Duc-Hiep Bach1, Van Giang Bui2,3, Thanh Liem Nguyen1
1Vinmec Research Institute of Stem Cell and Gene Technology, College of Health Sciences VinUniversity Vinhomes Ocean Park Hanoi Vietnam.
Abstract:
Osteoarthritis (OA) remains without disease-modifying sssstherapies, in part due to biological heterogeneity and a hostile joint microenvironment that undermines one-size-fits-all interventions. Extracellular vesicles (EVs) play a dual role in OA pathophysiology: endogenous EVs disseminate pro-inflammatory and catabolic signals that propagate cartilage degeneration, whereas therapeutic EVs most commonly derived from regenerative cell sources can deliver anti-inflammatory and anabolic cues. We frame this contrast as the EV paradox and argue that it represents a central translational challenge explaining why robust preclinical efficacy has not yet translated into consistent clinical benefit. We synthesize current evidence on EV biology in joint tissues, outcomes across preclinical models, and early human studies that demonstrate safety but limited efficacy. This analysis highlights key barriers to translation, including impaired EV function within inflamed and mechanically active joints, rapid clearance and limited tissue targeting, mismatch between animal models and human disease, and insufficient standardization of EV potency. Building on these insights, we propose a precision-medicine roadmap that emphasizes patient stratification, rational EV design, improved delivery strategies, and manufacturing frameworks linked to mechanism-anchored endpoints. Together, this framework reframes the EV paradox from a translational obstacle into a design principle for developing disease-modifying EV-based therapies for OA.
Insights
Osteoarthritis (OA) therapies face challenges due to disease heterogeneity. Extracellular vesicles (EVs) show a dual role, presenting a paradox that hinders clinical translation for effective OA treatment.
Area of Science:
- Biomedical Engineering
- Regenerative Medicine
- Osteoarthritis Pathophysiology
Background:
- Osteoarthritis (OA) lacks disease-modifying therapies due to biological complexity and joint microenvironment.
- Extracellular vesicles (EVs) have a dual role in OA: endogenous EVs promote degeneration, while therapeutic EVs offer regenerative potential.
- The contrasting functions of EVs in OA represent a significant translational hurdle.
Purpose of the Study:
- To analyze the dual role of extracellular vesicles (EVs) in osteoarthritis (OA) pathophysiology.
- To identify barriers hindering the clinical translation of EV-based OA therapies.
- To propose a precision medicine framework for developing effective, disease-modifying EV therapies for OA.
Main Methods:
- Synthesis of current evidence on EV biology in joint tissues.
- Review of outcomes from preclinical OA models and early human studies.
- Analysis of barriers including impaired EV function, clearance, targeting, model mismatch, and standardization.
Main Results:
- Endogenous EVs contribute to OA progression by spreading inflammatory signals.
- Therapeutic EVs show potential for delivering anti-inflammatory and anabolic cues.
- Preclinical studies show promise, but early human trials indicate safety with limited efficacy, highlighting translational gaps.
Conclusions:
- The 'EV paradox' is a central challenge in translating OA research to clinical benefit.
- Key barriers include impaired EV function, poor delivery, and model system limitations.
- A precision medicine approach focusing on patient stratification, rational EV design, and improved delivery is crucial for developing effective OA therapies.
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