中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (8): 1929-1939.doi: 10.12307/2026.017

• 水凝胶材料Hydrogel materials • 上一篇    下一篇

金属有机框架/羧甲基壳聚糖-氧化海藻酸钠/富血小板血浆水凝胶促糖尿病感染创面愈合

刘宏杰1,牟秋菊2,申玉雪1,梁  飞1,祝丽丽1,2   

  1. 1贵州医科大学医学检验学院临床检验学教研室,贵州省贵阳市   550004;2贵州医科大学附属医院输血科,贵州省贵阳市   550000
  • 收稿日期:2024-11-13 接受日期:2025-01-06 出版日期:2026-03-18 发布日期:2025-07-15
  • 通讯作者: 祝丽丽,主任技师,贵州医科大学医学检验学院临床检验学教研室,贵州省贵阳市 550004;贵州医科大学附属医院输血科,贵州省贵阳市 550000
  • 作者简介:刘宏杰,男,1999年生,贵州省贵阳市人,汉族,贵州医科大学在读硕士,初级技师,主要从事临床血细胞治疗研究。
  • 基金资助:
    贵州省科技计划项目(黔科合基础-ZK[2024]一般184),项目负责人:祝丽丽

Metal organic framework/carboxymethyl chitosan-oxidized sodium alginate/platelet-rich plasma hydrogel promotes healing of diabetic infected wounds

Liu Hongjie1, Mu Qiuju2, Shen Yuxue1, Liang Fei1, Zhu Lili1, 2   

  1. 1Clinical Laboratory Science Teaching and Research Department, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 2Department of Blood Transfusion, Affiliated Hospital of Guizhou Medical University, Guiyang 550000, Guizhou Province, China
  • Received:2024-11-13 Accepted:2025-01-06 Online:2026-03-18 Published:2025-07-15
  • Contact: Zhu Lili, Senior technologist, Clinical Laboratory Science Teaching and Research Department, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang 550004, Guizhou Province, China; Department of Blood Transfusion, Affiliated Hospital of Guizhou Medical University, Guiyang 550000, Guizhou Province, China
  • About author:Liu Hongjie, Master candidate, Junior technologist, Clinical Laboratory Science Teaching and Research Department, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Supported by:
    Guizhou Provincial Science and Technology Plan Project, No. ZK[2024]184 (to ZLL)

摘要:

文题释义:
富血小板血浆:是一种从血液中提取的浓缩血浆,富含血小板和生长因子,可促进细胞的增殖和血管生成、加速创面愈合过程、减少瘢痕形成、改善创面整体愈合质量。
金属有机框架:是一类由金属离子或金属簇与有机配体通过配位作用构成的多孔材料,具有高度可调的孔结构和大比表面积,是理想的药物传递载体。

背景:糖尿病创面中的过量活性氧和细菌感染会干扰细胞活性和功能,增加创面愈合难度,同时缺乏生物活性物质也是导致创面难愈合的重要因素。
目的:探讨金属有机框架/羧甲基壳聚糖-氧化海藻酸钠/富血小板血浆水凝胶在氧化应激环境下对细胞的保护作用和体外抗菌活性,以及在糖尿病感染创面修复中的作用。
方法:将氧化锰和银纳米颗粒加载到UIO-66-NH2上制备金属有机框架,随后制备金属有机框架/羧甲基壳聚糖-氧化海藻酸钠/富血小板血浆水凝胶,表征该水凝胶的结构、形貌以及对NIH-3T3成纤维细胞增殖、形态的影响;在H2O2诱导的氧化应激环境下,表征该水凝胶对
NIH-3T3成纤维细胞增殖、活性、活性氧水平、细胞周期及细胞迁移的影响;表征该水凝胶在体外对金黄色葡萄球菌与大肠杆菌的抑制作用。取12只SD大鼠,通过腹腔注射链脲佐菌素的方法建立糖尿病模型,验证造模成功后在大鼠背部制作1个圆形(直径20 mm)全层皮肤创面并滴注金黄色葡萄球菌悬液,12 h后随机分2组干预:对照组(n=6)创面采用纱布包扎,实验组创面采用金属有机框架/羧甲基壳聚糖-氧化海藻酸钠/富血小板血浆水凝胶覆盖并以纱布包扎,定期观察创面愈合情况;治疗第14天取材,苏木精-伊红染色与Masson染色观察创面愈合质量。
结果与结论:①金属有机框架/羧甲基壳聚糖-氧化海藻酸钠/富血小板血浆水凝胶中的各组分相互交联,呈现均匀的网络结构,可促进NIH-3T3成纤维细胞增殖且不影响细胞形态;在氧化应激环境下,该水凝胶可降低NIH-3T3成纤维细胞内活性氧水平与死亡细胞数量、逆转细胞周期停滞、提升细胞增殖率与迁移能力;该水凝胶可显著抑制金黄色葡萄球菌与大肠杆菌的生长。②糖尿病大鼠感染创面修复实验显示,金属有机框架/羧甲基壳聚糖-氧化海藻酸钠/富血小板血浆水凝胶可促进创面的修复,提升创面愈合质量。③结果表明,金属有机框架/羧甲基壳聚糖-氧化海藻酸钠/富血小板血浆水凝胶能够保护细胞免受过量活性氧的影响,提高细胞在氧化应激环境中的活性及功能表达,显著促进糖尿病大鼠感染创面的愈合。
https://orcid.org/0009-0006-3422-3458 (刘宏杰) 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料;口腔生物材料;纳米材料;缓释材料;材料相容性;组织工程

关键词: 富血小板血浆, 金属有机框架, 羧甲基壳聚糖, 氧化海藻酸钠, 水凝胶, 成纤维细胞, 抗菌, 抗氧化, 工程化皮肤材料

Abstract: BACKGROUND: Excessive reactive oxygen species and bacterial infections in diabetic wounds can interfere with cell activity and function, increasing the difficulty of wound healing. Additionally, the lack of bioactive substances is an important factor contributing to delayed wound healing.
OBJECTIVE: To investigate the protective effects of metal organic framework/carboxymethyl chitosan-oxidized sodium alginate/platelet-rich plasma hydrogel on cells under oxidative stress and in vitro antibacterial activity, as well as its role in the repair of diabetic infected wounds.
METHODS: Manganese oxide and silver nanoparticles were loaded onto UIO-66-NH2 to prepare metal organic frameworks, and then metal organic framework/carboxymethyl chitosan-oxidized sodium alginate/platelet-rich plasma hydrogels were prepared. The structure and morphology of the hydrogels and their effects on the proliferation and morphology of NIH-3T3 fibroblasts were characterized. Under H2O2-induced oxidative stress, the effects of the hydrogels on the proliferation, activity, reactive oxygen species levels, cell cycle and cell migration of NIH-3T3 fibroblasts were characterized. The inhibitory effects of the hydrogels on Staphylococcus aureus and Escherichia coli in vitro were characterized. Twelve SD rats were selected and the diabetic model was established by intraperitoneal injection of streptozotocin. After the model was successfully established, a circular (20 mm in diameter) full-thickness skin wound was made on the back of the rats and Staphylococcus aureus suspension was dripped. After 12 hours, the rats were randomly divided into two intervention groups: the control group (n=6) had the wound wrapped with gauze, and the experimental group had the wound covered with metal organic framework/carboxymethyl chitosan-oxidized sodium alginate/platelet-rich plasma hydrogel and wrapped with gauze. The wound healing was observed regularly. On day 14 of treatment, the wound was collected and the wound healing quality was observed by hematoxylin-eosin staining and Masson staining.
RESULTS AND CONCLUSION: (1) The components in the metal organic framework/carboxymethyl chitosan-oxidized sodium alginate/platelet-rich plasma hydrogel were cross-linked to present a uniform network structure, which could promote the proliferation of NIH-3T3 fibroblasts without affecting the cell morphology. Under oxidative stress, the hydrogel could reduce the level of reactive oxygen species and the number of dead cells in NIH-3T3 fibroblasts, reverse cell cycle arrest, and increase cell proliferation rate and migration ability. The hydrogel could significantly inhibit the growth of Staphylococcus aureus and Escherichia coli. (2) The diabetic rat infection wound repair experiment showed that the metal organic framework/carboxymethyl chitosan-oxidized sodium alginate/platelet-rich plasma hydrogel could promote wound repair and improve the quality of wound healing. (3) The results show that the metal organic framework/carboxymethyl chitosan-oxidized sodium alginate/platelet-rich plasma hydrogel can protect cells from the influence of excessive reactive oxygen species, improve the activity and functional expression of cells in an oxidative stress environment, and significantly promote the healing of infected wounds in diabetic rats. 

Key words: platelet-rich plasma, metal organic framework, carboxymethyl chitosan, oxidized sodium alginate, hydrogel, fibroblast, antibacterial, antioxidant, engineered skin materia

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