Smart Hydrogen Nanoparticles Speed Wound Healing and Prevent Chronic Wounds
- Authors
- Zhaoyu Xu, Yang Yang, Xinhui Li, Jing Wang, Shuaidong Chen, Tiantian An, Chen Hu, Chen Deng, Feng Zhou, Lin Xiang, Qu Yili, Yi Man
- Journal
- ACS Applied Materials & Interfaces
- Year
- 2025
- DOI
- 10.1021/acsami.5c00667
- Study Type
- Cell Culture
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- China
- Health Condition
- Chronic Wounds
- Body System
- Integumentary
TL;DR
Scientists developed a new material that can release hydrogen on demand to reduce inflammation and help heal chronic wounds.
Key Finding
A light-activated hydrogen-generating nanoplatform delivered controlled hydrogen that reduced pro-inflammatory immune cells and promoted wound healing in cell culture studies by suppressing harmful immune-metabolic pathways.
Summary
Researchers developed a nanoplatform (a tiny engineered material) that generates hydrogen gas on demand when exposed to light and water. When placed in a wound-healing scaffold, this platform released hydrogen in a controlled pattern that matched different stages of inflammation. In cell studies, the hydrogen reduced excessive immune cell activity and shifted inflammatory cells toward a less harmful state, which helped promote wound healing and prevent chronic wounds.
Practical Takeaway
While this research suggests hydrogen may help manage inflammation during wound healing through specific immune mechanisms, these findings are from cell culture studies only—not human trials or even animal studies. Much more research would be needed to determine if this approach could work in actual wounds or whether other forms of hydrogen water would have similar effects.
Abstract
Effective management of inflammation is one of the promising strategies to prevent the formation of chronic wounds. Despite hydrogen being a prospective molecule for anti-inflammatory effects, the on-demand delivery of hydrogen that could synchronize with the dynamic inflammation stages has yet remained unaddressed. Moreover, its specific immunomodulatory mechanisms are still veiled. In this study, we introduced ISO-ZIF-8@AB, a hydrogen-generating nanoplatform that integrated visible-light photocatalysis and hydrolysis reactions to achieve controllable hydrogen release on demand, functioning with an initial peak release and following a sustained release. With ISO-ZIF-8@AB further loaded into an aligned ECM-like scaffold, the complex significantly alleviated inflammation and prevented protracted unhealing. The bulk-RNA sequencing combined with single-cell RNA sequencing revealed that hydrogen treatment effectively reduced the excessive aggregation and infiltration of innate immune cells. Specifically, hydrogen reduced the proportion of Ptgs2+Nos2+ pro-inflammatory macrophages (PIMs) by mitigating mitochondrial stress and suppressing HIF-1α-induced glycolysis, the immune-metabolic regulation of which reduced harmful crosstalk between PIMs and hypodermal fibroblasts and facilitated extracellular matrix production accompanied by the ultimate wound repair. Overall, this study presented a strategy for controllable hydrogen release in terms of timing and rate, with further discussions regarding the underlying immune-metabolic regulation mechanisms of hydrogen therapy.