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Abstract BackgroundBasic fibroblast growth factor (bFGF) is one of the critical components accelerating angiogenesis and tissue regeneration by promoting the migration of dermal fibroblasts and endothelial cells associated with matrix formation and remodeling in wound healing process. However, clinical applications of bFGF are substantially limited by its unstable nature due to rapid decomposition under physiological microenvironment. ResultsIn this study, we present the bFGF-loaded human serum albumin nanoparticles (HSA-bFGF NPs) as a means of enhanced stability and sustained release platform during tissue regeneration. Spherical shape of the HSA-bFGF NPs with uniform size distribution (polydispersity index < 0.2) is obtainedviaa simple desolvation and crosslinking process. The HSA-bFGF NPs securely load and release the intact soluble bFGF proteins, thereby significantly enhancing the proliferation and migration activity of human dermal fibroblasts. Myofibroblast-related genes and proteins were also significantly down-regulated, indicating decrease in risk of scar formation. Furthermore, wound healing is accelerated while achieving a highly organized extracellular matrix and enhanced angiogenesis in vivo. ConclusionConsequently, the HSA-bFGF NPs are suggested not only as a delivery vehicle but also as a protein stabilizer for effective wound healing and tissue regeneration.
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This content will become publicly available on May 28, 2026
Evaporative cooling signals for wound healing in plants
Abstract Repairing a damaged body part is critical for the survival of any organism. In plants, tissue damage induces rapid responses that activate defense, regeneration and wound healing. While early wound signaling mediated by phytohormones, electrical signals and reactive oxygen species is well-characterized, the mechanisms governing the final stages of wound healing remain poorly understood. Here, we show that wounding in Arabidopsis leaves induces localized cooling, likely due to evaporative water loss, accompanied by the activation of cold-responsive genes. The subsequent disappearance of localized cooling and deactivation of cold-responsive genes serve as a quantitative marker of wound healing. Based on these observations, we developed a workflow by leveraging computer vision and deep learning to monitor the dynamics of wound healing. We found that CBFs transcription factors relay injury-induced cooling signal to wound healing. Thus, our work advances our understanding of tissue repair and provides a tool to quantify wound healing in plants.
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- Award ID(s):
- 2039313
- PAR ID:
- 10616278
- Publisher / Repository:
- bioRxiv
- Date Published:
- Format(s):
- Medium: X
- Institution:
- bioRxiv
- Sponsoring Org:
- National Science Foundation
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