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具有湿态生物黏附和滑爽双重表面特性的结构色医用贴片。

Structural Color Medical Patch with Surface Dual-Properties of Wet Bioadhesion and Slipperiness.

机构信息

Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, P. R. China.

Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, P. R. China.

出版信息

Adv Sci (Weinh). 2022 Nov;9(31):e2203096. doi: 10.1002/advs.202203096. Epub 2022 Sep 11.

Abstract

Developing a self-reporting bioadhesive patch that has strong adhesion to the wet tissues and meanwhile can avoid adhering to the adjacent tissues is a current research difficulty and challenge. In this paper, inspired by the wet adhesion of spider web, slippery surface of Nepenthes, and structural color phenomena of chameleons, a novel structural color medical patch with surface dual-properties of wet bioadhesion and slipperiness for internal tissue repair based on inverse opal scaffold is presented. The adhesive surface made by poly(acrylic acid)-polyethylene glycol-N-hydroxysuccinimide ester and gelatin hydrogel can attain tough adhesion to internal wet tissues by absorbing tissue interfacial water and the covalent cross-linking between the hydrogel and tissue. Besides, the slippery surface made by liquid paraffin infused inverse opal scaffold can avoid adhesion to the adjacent tissues. It is demonstrated that the designed patch can adhere tightly to the defect tissue and improve the tissue repair without adjacent adhesion when applied in a rat model with full-thickness perforation of the stomach wall. In addition, the responsive structural color can supply a color-sensing monitoring to evaluate the adhesive and repair process. These features impart the bioinspired patch with great scientific significance and broad clinical application prospects.

摘要

开发一种对湿组织具有强附着力同时避免与相邻组织粘连的自报告型生物粘附贴片是当前的研究难点和挑战。本文受蜘蛛网的湿粘附、猪笼草的光滑表面和变色龙的结构色现象的启发,提出了一种基于反转蛋白石支架的具有表面双湿生物粘附和光滑性能的新型结构色医用贴片,用于内部组织修复。由聚(丙烯酸)-聚乙二醇-N-羟基琥珀酰亚胺酯和明胶水凝胶制成的粘附表面可以通过吸收组织界面水和水凝胶与组织之间的共价交联来实现对内部湿组织的牢固粘附。此外,由液态石蜡注入的反转蛋白石支架制成的光滑表面可以避免与相邻组织粘连。在大鼠全层胃壁穿孔模型中应用表明,设计的贴片可以紧密地粘附在缺陷组织上,并在不相邻粘连的情况下改善组织修复。此外,响应性结构色可以提供颜色感应监测,以评估粘附和修复过程。这些特性赋予仿生贴片具有重要的科学意义和广阔的临床应用前景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8108/9631070/1dd8c345910e/ADVS-9-2203096-g007.jpg

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