Hydrogen Nanozyme Reduces Joint Damage in Arthritis Study
- Authors
- Qi Wang, Minyi Zhang, Weihao Jiang, Dejian Li, Beijie Qi, Shi Shi, Shuo Shi, Chengqing Yi
- Journal
- Journal of Nanobiotechnology
- Year
- 2025
- DOI
- 10.1186/s12951-025-03716-0
- Study Type
- Mouse
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- China
- Health Condition
- Osteoarthritis
- Body System
- Musculoskeletal
TL;DR
Hydrogen-releasing nanozymes combat osteoarthritis by reducing oxidative stress, restoring mitochondria, and slowing cartilage damage.
Key Finding
Hydrogen-releasing nanoparticles reduced oxidative stress and reversed mitochondrial dysfunction in mouse models of osteoarthritis, while promoting cartilage matrix synthesis and slowing disease progression.
Summary
Researchers created a special nanoparticle (a tiny engineered particle) that releases hydrogen gas and tested it in mice with osteoarthritis, a degenerative joint disease. The treatment reduced harmful molecules called free radicals, improved damaged cellular structures called mitochondria, and slowed cartilage breakdown, suggesting hydrogen gas may help protect joints from osteoarthritis damage.
Practical Takeaway
This early-stage animal study suggests hydrogen gas may help address some of the cellular damage underlying osteoarthritis, but much more research is needed before any conclusions can be drawn for human use. The study was conducted only in mice and used a specialized nanoparticle delivery system, not hydrogen water as typically consumed.
Abstract
Osteoarthritis (OA), a chronic and degenerative joint disease, has become increasingly prevalent due to the aging population, posing a significant societal burden. However, despite progress, effective therapeutic options for osteoarthritis remain limited. In OA, chronic inflammation mediates a hypoxic microenvironment, leading to increased cellular energy demands. Over time, this causes mitochondrial dysfunction, favoring the accumulation of ROS, thereby perpetuating inflammation. Furthermore, reduced autophagy in aging chondrocytes hinder the clearance of damaged mitochondria, exacerbating oxidative stress. Herein, we have developed a simple and environmentally friendly strategy to fabricate hydrogen-releasing nanozymes (Se-HMPB@AB@COS) that spontaneously release hydrogen gas, effectively treating osteoarthritis through antioxidant, anti-inflammatory, and mitochondrial dysfunction reversal mechanisms. During the process of hydrogen therapy, small hydrogen molecules can readily penetrate mitochondria, specifically reducing the levels of •OH thereby protecting mitochondrial function. Our research further unveils that hydrogen therapy can effectively enhance mitophagy and delay chondrocyte senescence. In vivo, Se-HMPB@AB@COS encapsulated with chondroitin sulfate significantly promotes the synthesis of collagen II, inhibits the degradation of extracellular matrix, and reduces inflammatory factors. Overall, this study innovatively synthesized a hydrogen-releasing nanozyme, demonstrating its effectiveness in inhibiting oxidative stress, inflammation, promoting mitophagy and extracellular matrix synthesis, thereby reducing cartilage and mitochondrial damage, and delaying OA progression.