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Redox-responsive self-assembled HG-type pectin nanomicelles for alleviating chronic alcoholic liver injury in mice

文献类型： 外文期刊

作者： Kang, Lingtao 1 ; Chang, Xia 1 ; Ma, Shuangshuang 1 ; Gao, Zhipeng 3 ; Su, Zhipeng 1 ; Li, Xiaopeng 1 ; Zhao, Yifei 1 ; Guo, Jiajing 1 ; Li, Gaoyang 1 ;

作者机构： 1.Hunan Acad Agr Sci, Hunan Agr Prod Proc Inst, Dongting Lab, Hunan Prov Key Lab Food Engn & Safety, Changsha 410125, Peoples R China

2.Hunan Univ, Coll Biol, Longping Branch, Changsha 410125, Peoples R China

3.Hunan Agr Univ, Fisheries Coll, Changsha 410128, Hunan, Peoples R China

关键词： HG-type pectin; Oleanolic acid; Redox responsiveness; Self-assembling nanomicelles; Hepatoprotection

期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：12.5； 五年影响因子：11.9 ）

ISSN： 0144-8617

年卷期： 2025 年 361 卷

页码：

收录情况： SCI

摘要： This study aimed to develop nanomicelles with redox-responsive properties using HG-type pectin (polygalacturonic acid) as a substrate to enhance the solubility of oleanolic acid (OA) and evaluate their potential application in the prevention of chronic alcoholic liver injury. Three amphiphilic conjugates, PA-OA, PA-S-OA, and PA-SS-OA (PA: polygalacturonic acid; S: 3,3 '-thiodipropionic acid; SS: 3,3 '-dithiobispropionic acid), were successfully synthesized by carbodiimide chemistry. The amphiphilic conjugates were physicochemically characterized and experimentally validated for efficacy in animal models. In aqueous solutions, these amphiphilic conjugates self-assembled to form nanomicelles with a particle size of approximately 430 nm and excellent stability. These nanomicelles exhibited superior water solubility compared with that of OA. In experiments simulating oxidizing and reducing environments to assess the degradation and OA release, PA-SS-OA exhibited superior redox responsiveness and achieved an efficient controlled release of OA. Erythrocyte hemolysis and cytotoxicity experiments demonstrated the excellent biocompatibility and safety of the prepared nanomicelles. In animal experiments, PA-SS-OA effectively mitigated alcohol-induced chronic liver injury by robustly stimulating the Nrf2 antioxidant response pathway, demonstrating a superior protective capacity compared with that of OA. These findings indicate that PA-SS-OA improves the bioavailability of OA and has potential applications in preventing chronic alcoholic liver injury.

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