A chicken liver-derived polypeptide capable of alleviating alcoholic liver injury, and a preparation method and application thereof

By binding chicken liver-derived peptides to the Keap1 receptor protein, cell inflammation in alcoholic liver injury is reduced, solving the problems of low development efficiency and large side effects of existing chicken liver-derived peptides, and achieving a highly efficient and safe effect in alleviating alcoholic liver injury.

CN122404476APending Publication Date: 2026-07-17HEFEI UNIV OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Filing Date
2026-04-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies cannot effectively alleviate alcoholic liver damage through food-derived peptides, and traditional liver-protecting drugs have side effects, long development cycles, low efficiency, and difficulty in obtaining highly efficient peptides that target specific pathological processes.

Method used

Using chicken liver as raw material, a chicken liver-derived polypeptide with the amino acid sequence Leu-Asp-Phe-Phe was obtained through fermentation and computer high-throughput screening. Combined with solid-phase peptide synthesis, its binding to Keap1 receptor protein was prepared and verified, reducing the level of cell inflammation in alcoholic liver injury, thus preparing a liver-protective polypeptide with a clear structure and high efficiency.

Benefits of technology

It provides chicken liver-derived peptides with simple structure, high safety and strong biocompatibility, which can enhance the antioxidant capacity of cells in vivo through the Keap1-Nrf2 antioxidant signaling pathway, significantly alleviate alcoholic liver damage, and have potential medical value with no toxicity and no side effects.

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Abstract

本发明公开了一种可缓解酒精性肝损伤的鸡肝源多肽及其制备方法与应用,涉及生物蛋白肽技术领域,具体为利用枯草芽孢杆菌在恒温箱37℃条件下对鸡肝溶液发酵3天后,将收集的发酵物在2000 g条件下离心10min获取上清液冻干。冻干多肽通过纯化后利用计算机高通量筛选出5条潜在活性肽,随后通过分子对接、分子动力学模拟、抗氧化及胃肠消化稳定性评价筛选出1条最佳活性肽。最后将此活性肽通过固相合成,由小鼠酒精性肝模型验证,本发明提出的鸡肝源多肽可缓解酒精性肝损伤具有潜在医学价值;与细胞内抗氧化信号通路中的Keap1信号分子结合进而提高Nrf2分子的累积水平,最终提高体内细胞抗氧化能力。
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