High-efficiency expression of human epidermal growth factor fusion protein and preparation method and application thereof

By introducing glycine and His tags to the C-terminus of hEGF, combined with E. coli expression and nickel column purification, the problems of efficient production and stability of hEGF were solved. Furthermore, the stable delivery and release of drugs were achieved using ROS-responsive hydrogel compositions, expanding its applications in wound healing and cosmetics.

CN122404570APending Publication Date: 2026-07-17GUILIN MEDICAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUILIN MEDICAL UNIVERSITY
Filing Date
2026-03-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to produce human epidermal growth factor (hEGF) efficiently and stably, and its instability in liquid formulations makes sustained release and targeted delivery difficult, limiting its application in wound healing and cosmetics.

Method used

By introducing hydrophilic glycine into the C-terminus of hEGF and fusing it with a His tag, an E. coli expression system was used, followed by nickel column affinity chromatography purification, and then combined with a ROS-responsive hydrogel composition to achieve efficient expression and stable delivery.

Benefits of technology

This study achieved efficient expression and stable purification of hEGF, reduced production costs, and provided application potential in wound healing and skin repair. Furthermore, the hydrogel composition enabled stable drug release and efficient absorption in the wound environment.

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Abstract

本发明公开了一种高效表达的人表皮生长因子融合蛋白及其制备方法和应用。所述融合蛋白包括hEGF与His标签,hEGF氨基酸序列如SEQ ID NO.1所示。本发明经密码子优化及C端引入甘氨酸,实现融合蛋白在大肠杆菌中包涵体高效表达;借助His标签与镍离子特异性螯合,经镍柱亲和层析一步纯化即可获得高纯度hEGF,工艺简单、成本低。本发明还提供了一种负载所述融合蛋白与雷公藤红素的ROS响应性水凝胶组合物,该水凝胶具有良好机械性能、稳定释药特性及生物安全性,糖尿病小鼠实验证实其能显著促进创面愈合。本发明为hEGF在创伤修复、化妆品等领域的应用提供了高效生产技术和新剂型选择。
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