一种单取向的强韧丝素蛋白支架及其制备方法

By employing directional cryoablation and chemical treatment, highly oriented silk fibroin scaffolds were prepared, solving the problem of decreased mechanical properties of regenerated silk fibroin and achieving high-strength and highly biocompatible silk fibroin scaffolds suitable for tissue engineering and regenerative medicine.

CN119708602BActive Publication Date: 2026-07-17ZHEJIANG UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Filing Date
2024-12-03
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing regenerated silk fibroin exhibits decreased mechanical properties during the preparation process, making it difficult to meet the high-strength application requirements of tissues such as muscles and tendons, especially when subjected to tensile stress in a single direction.

Method used

By controlling the micro-orientation structure of silk fibroin materials through directional freezing, and combining freeze-drying, humidification, mechanical compaction, and polar solvent-induced β-sheet crystallization, highly oriented and highly crystalline silk fibroin scaffolds were prepared.

Benefits of technology

A high-strength, highly biocompatible silk fibroin scaffold was fabricated, possessing excellent mechanical properties and stress transfer efficiency, making it suitable for tissue engineering and regenerative medicine.

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Abstract

本发明提供一种单取向的强韧丝素蛋白支架及其制备方法。该制备方法通过定向冷冻工艺调控丝素材料的微观取向结构,再经过潮化、机械压实和极性溶剂诱导β‑折叠结晶的方式,制备得到高度取向、结晶度高且生物可降解的强韧高生物相容性的丝素蛋白支架。该制备方法具有设备简单、操作简便、可快速且批量化制备和低经济成本的优点。由该制备方法制得的丝素蛋白支架在宏观和微观层面上具有高度取向、界面结合紧密、β‑折叠晶体含量高的优点,单取向的丝素蛋白纤维和β‑折叠晶体具有裂纹钉扎和裂纹延迟效应,能够有效提高丝素蛋白支架的韧性;由上述方法制得的单取向的强韧丝素蛋白支架可应用于组织工程与再生医学研究中。
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