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Exercise-Induced Stimulation of Self-Powered Nanofibers for Aspirin/Lysine Delivery in the Prevention of Denervated Muscle Atrophy

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Denervation-induced muscle atrophy causes a 40–50% reduction in muscle fiber size within 2 weeks. This negatively impacts muscle quality and function. Oral nonsteroidal anti-inflammatory drugs (NSAIDs) can reduce muscle atrophy by 20%. However, their bioavailability and gastrointestinal side effects raise concerns. Furthermore, multiple intramuscular injections can be difficult for patients. This is due to tolerance issues and discomfort from high doses. Muscle-targeted sustained-release delivery offers a solution by avoiding gastrointestinal problems and first-pass effects. Here, we present a self-powered gelatin nanofiber membrane (NFM) designed for the sustained release of aspirin/lysine (one NSAID). This method eliminates the need for repeated injections and directly targets inflammatory factors and superoxide in denervated muscles. As a result, it leads to a 44% increase in muscle weight and improved functional capacity in daily movements. Although the NFM requires implantation, its self-powered stimulation promotes muscle quality and enhances further drug release. Additionally, exercise-induced stimulation can intelligently control drug delivery through the self-powered nanofibers. Transcriptomic studies have confirmed that the NFM regulated muscle angiogenesis via inhibiting renin-angiotensin signal. Furthermore, its anti-inflammatory and antioxidant effects were enhanced with the incorporation of aspirin/lysine. © 2025 American Chemical Society
Original languageEnglish
Pages (from-to)31481-31495
JournalACS Nano
Volume19
Issue number35
Online published26 Aug 2025
DOIs
Publication statusPublished - 9 Sept 2025

Funding

The authors acknowledge financial support from the CityU Startup Grant (“Laboratory of Wearable Materials for Healthcare”, Grant 9380116), the National Natural Science Foundation of China (NSFC) for projects titled “Study of High Performance Fiber to be Achieved by Mimicking the Hierarchical Structure of Spider-Silk” (Grant 52073241), “Study of Multi-Responsive Shape Memory Polyurethane Nanocomposites Inspired by Natural Fibers” (Grant 51673162), and “Developing Spider-Silk-Model Artificial Fibers by a Chemical Synthetic Approach” (Grant 15201719), as well as Contract Research (“Development of Breathable Fabrics with Nano-Electrospun Membrane”, CityU ref: 9231419). The authors appreciate Biorender for the creation of Figures 4a,i, and 6c and abstract graph.

Research Keywords

  • anti-inflammation
  • atrophy
  • bioactive nanofiber
  • drug delivery
  • myogenesis
  • self-powered

Publisher's Copyright Statement

  • COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © 2025 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.5c07846.

RGC Funding Information

  • RGC-funded

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