Abstract
Developing novel antibacterial dressing protecting skin injuries from infection is essential for wound healing. In this study, sericin, a bio-waste produced during the degumming of silk cocoons, is utilized to exfoliate MoS2 layers and improve the dispersity and stability of MoS2 nanosheets (MoS2-NSs). Moreover, owing to its ability to promote oxygen permeability and cell growth and its good biocompatibility, MoS2-NS/Sericin maintains its photothermal property under an 808 nm light source for a strong antibacterial activity as well as improves the fibroblast migration, which accelerates wound healing. Furthermore, the in vitro experiments indicates that MoS2-NS/Sericin can also scavenge reactive oxygen species (ROS) at an inflammatory stage of wound healing and transform classical activated macrophages (M1-type) into alternatively activated macrophages (M2-type), which is beneficial for wound recovery. Based on these results observed in vitro, full-thickness skin wound experiments are conducted on rats, and the corresponding results show that MoS2/Sericin under 808 nm irradiation exhibits the best performance in promoting wound healing. Overall, MoS2-NS/Sericin exhibits a high potential for bacteria-infected wound healing.
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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (No. 22008201), Natural Science Foundation Innovation and Development Joint Fund Project of Chongqing (No. CSTB2023NSCQ-LZX0028), Fundamental Research Funds for the Central Universities (No. SWU-KW22004), Special Program Project (No. 2022-JCJQ-ZD-224-12) and Open Project Program of the Ministry of Education of the Key Laboratory of Textile Fiber and Products (No. Fzxw2021001).
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XY, YS, and SY conceived and designed the study. LQ and LD wrote the manuscript. LQ, LD, and HL organized the data. MW, HL and GP supervised the project. #LQ and LD contributed equally to this work. All authors discussed the results and reviewed the manuscript.
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Qiu, L., Duan, L., Lin, H. et al. Multifunctional and Sprayable 2D MoS2/Silk Sericin Bio-Nanocomposite Dressings with Enhanced Photothermal Effect for Infected Wound Healing. Adv. Fiber Mater. 6, 1074–1091 (2024). https://doi.org/10.1007/s42765-024-00407-7
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DOI: https://doi.org/10.1007/s42765-024-00407-7