任玮晔, 程苇钇, 陈井泉, 何李婷, 朴寄纲, 魏颖慧, 包丹丹. 活性氧响应纳米粒嵌合油凝胶通过铁代谢-胶原重构协同促MRSA创面无瘢痕愈合J. 药学学报, 2026, 61(2): 624-635. DOI: 10.16438/j.0513-4870.2025-0773
引用本文: 任玮晔, 程苇钇, 陈井泉, 何李婷, 朴寄纲, 魏颖慧, 包丹丹. 活性氧响应纳米粒嵌合油凝胶通过铁代谢-胶原重构协同促MRSA创面无瘢痕愈合J. 药学学报, 2026, 61(2): 624-635. DOI: 10.16438/j.0513-4870.2025-0773
REN Wei-ye, CHENG Wei-yi, CHEN Jing-quan, HE Li-ting, PIAO Ji-gang, WEI Ying-hui, BAO Dan-dan. ROS-responsive nanoparticles embedded in oleogel promote scarless healing of MRSA-infected wounds through synergistic regulation of iron metabolism and collagen remodelingJ. Acta Pharmaceutica Sinica, 2026, 61(2): 624-635. DOI: 10.16438/j.0513-4870.2025-0773
Citation: REN Wei-ye, CHENG Wei-yi, CHEN Jing-quan, HE Li-ting, PIAO Ji-gang, WEI Ying-hui, BAO Dan-dan. ROS-responsive nanoparticles embedded in oleogel promote scarless healing of MRSA-infected wounds through synergistic regulation of iron metabolism and collagen remodelingJ. Acta Pharmaceutica Sinica, 2026, 61(2): 624-635. DOI: 10.16438/j.0513-4870.2025-0773

活性氧响应纳米粒嵌合油凝胶通过铁代谢-胶原重构协同促MRSA创面无瘢痕愈合

ROS-responsive nanoparticles embedded in oleogel promote scarless healing of MRSA-infected wounds through synergistic regulation of iron metabolism and collagen remodeling

  • 摘要: 耐甲氧西林金黄色葡萄球菌(methicillin-resistant Staphylococcus aureus, MRSA) 感染严重阻碍皮肤创面愈合, 常伴随炎症持续与瘢痕增生, 临床治疗亟需更有效的局部治疗策略。本研究构建了一种基于天然活性成分的活性氧(reactive oxygen species, ROS) 响应纳米粒嵌合油凝胶系统, 集抗菌、抗炎及抗瘢痕多重功能于一体, 用于MRSA感染创面的综合治疗。该油凝胶系扁柏酚与维替泊芬(verteporfin, VP) 自组装纳米粒嵌合于β-谷甾醇构建的油凝胶中, 其可贴合不规则创面, 并在感染部位ROS刺激下响应释放药物。扁柏酚在局部与Fe3+螯合, 破坏细菌铁代谢, 诱导膜损伤并破坏DNA, 实现非抗生素杀菌; VP通过抑制Yes相关蛋白/具有PDZ结合基序的转录共激活因子(Yes-associated protein/transcriptional co-activator with PDZ-binding motif, YAP/TAZ) 通路, 减少成纤维细胞过度活化, 促进组织再生并抑制瘢痕形成; 胶凝剂β-谷甾醇具备一定抗炎活性并辅助调控早期免疫反应。该制剂可发挥抗菌、抗炎及瘢痕修复等多重协同作用, 为感染性慢性创面治疗提供新策略。动物实验经浙江中医药大学动物实验研究中心批准, 且实验均按相关指导原则和规定进行, 批准号: IACUC-20241125-07。

     

    Abstract: Methicillin-resistant Staphylococcus aureus (MRSA) infection poses a major obstacle to skin wound healing, often accompanied by persistent inflammation and excessive scar formation. There is an urgent clinical need for more effective localized therapeutic strategies. In this study, we developed a responsive nano-oleogel system based on natural bioactive compounds for the synergistic treatment of MRSA-infected wounds. This system consists of self-assembled nanoparticles of hinokitiol and verteporfin (VP), embedded within an oleogel matrix constructed using β-sitosterol. The oleogel conforms well to irregular wound surfaces and enables stimuli-responsive drug release in the presence of reactive oxygen species (ROS) at the infection site. Hinokitiol chelates Fe3+ locally, disrupting bacterial iron metabolism and inducing membrane damage and DNA disruption, thereby achieving non-antibiotic bactericidal effects. β-Sitosterol contributes inherent anti-inflammatory activity, helping to modulate early immune responses. VP exerts its effects by inhibiting the Yes-associated protein/transcriptional co-activator with PDZ-binding motif (YAP/TAZ) signaling pathway. This multifunctional formulation demonstrates synergistic antibacterial, anti-inflammatory, and scar-modulating effects, offering a promising strategy for the treatment of infected chronic wounds. The animal experiments were approved by the Animal Experimental Research Center of Zhejiang Chinese Medical University and were conducted in accordance with the relevant guidelines and regulations (approval No. IACUC-20241125-07).

     

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