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Adhesive, sustained-release, antibacterial, cytocompatible hydrogel-based nanofiber membrane assembled from polysaccharide hydrogels and functionalized nanofibers

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Abstract

Hydrogels, three-dimensional hydrophilic polymer cross-linked networks, have attracted much attention in the fields of biomedicine, health care, etc., due to their unique water retention, and structural similarity to extracellular matrix. However, the conventional synthetic polymer hydrogels have poor biocompatibility, adhesion, and biodegradability. Polysaccharides as a major constituent of native extracellular matrix are biocompatible and degradable, so the polysaccharides hydrogels are outstanding candidates for biomedicine and health care applications. Herein, novel hydrogel-based nanofiber membranes with adhesive, sustained-release, antibacterial and biocompatible performance were developed by complexing functionalized nanofibers membranes and polysaccharide hydrogels. The functionalized nanofiber membranes loaded with poly-lysine and allantoin were obtained by green solvent electrospinning technology using non-toxic and biological polycaprolactone as the base material. Biocompatible polysaccharide hydrogels were prepared by dynamic Schiff base crosslinking of chitosan oligosaccharide and oxidized konjac glucomannan. The dynamic Schiff base bonds endow hydrogels with outstanding self-healing properties. Consequently, with the integrated features of fibrous membranes and hydrogels, hydrogel-based nanofiber membranes have outstanding antibacterial capability against both Escherichia coli (99.99%) and Staphylococcus aureus (99.99%), sustained-release characteristic with 65.7% cumulative allantoin release during 10 h, and biocompatibility with at least 450% cell viability within 5 days. This unique composite structure exhibits positive potential in the application of skincare, including facial masks, medical dressings and other products.

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Acknowledgments

This work was partly supported by the Fundamental Research Funds for the Central Universities (2232020D-15, 2232020A-08, 2232020G-01, 2232020D-14 and 2232019D3-11) and Grants (51773037, 51973027, 51803023, 52003044 and 61771123) from the National Natural Science Foundation of China. This work has also been supported by the Chang Jiang Scholars Program and the Innovation Program of Shanghai Municipal Education Commission (2019-01-07-00-03-E00023) to Prof. Xiaohong Qin, the Shanghai Sailing Program (18YF 1400400), the Shanghai Sailing Program (19YF1400700), the Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure (SKL201906SIC), Young Elite Scientists Sponsorship Program by CAST and DHU Distinguished Young Professor Program.

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Correspondence to Hongnan Zhang.

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All authors contributed to the writing of the manuscript and approved the final version. The author declares that there are no competing economic interests.

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Wang, M., Gu, J., Hao, Y. et al. Adhesive, sustained-release, antibacterial, cytocompatible hydrogel-based nanofiber membrane assembled from polysaccharide hydrogels and functionalized nanofibers. Cellulose 30, 323–337 (2023). https://doi.org/10.1007/s10570-022-04894-y

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