中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (28): 6052-6060.doi: 10.12307/2025.489

• 材料力学及表面改性 material mechanics and surface modification • 上一篇    下一篇

MXene纳米颗粒Ti3C2TX与光热效应促进糖尿病小鼠创面愈合

李美运1,2,刘  森1,陈开元1,施  灵1,宋美陈1,曹家洪1,武  艳1,于  晶3   

  1. 1牡丹江医学院生命科学学院,黑龙江省牡丹江市   157001;2中国人民解放军南部战区总医院临床病理科,广东省广州市   510030;3牡丹江医学院附属红旗医院内分泌科,黑龙江省牡丹江市   157001
  • 收稿日期:2024-06-07 接受日期:2024-08-14 出版日期:2025-10-08 发布日期:2024-12-07
  • 通讯作者: 于晶,副主任医师,牡丹江医学院附属红旗医院内分泌科,黑龙江省牡丹江市 157001
  • 作者简介:李美运,女,1996年生,辽宁省营口市人,汉族,硕士,主要从事组织损伤与修复研究。
  • 基金资助:
    牡丹江市指导性科技计划项目(HT2022JG125),项目负责人:武艳;黑龙江省省属高等学校基本科研业务费科研项目(2021-KYYWF-0515),项目负责人:于晶

MXene nanoparticles Ti3C2Tx and photothermal effect promote wound healing in diabetic mice

Li Meiyun1, 2, Liu Sen1, Chen Kaiyuan1, Shi Ling1, Song Meichen1, Cao Jiahong1, Wu Yan1, Yu Jing3   

  1. 1College of Life Sciences, Mudanjiang Medical University, Mudanjiang 157001, Heilongjiang Province, China; 2Department of Clinical Pathology, General Hospital of Southern Theater Command of People’s Liberation Army of China, Guangzhou 510030, Guangdong Province, China; 3Department of Endocrinology, Hongqi Hospital, Mudanjiang Medical College, Mudanjiang 157001, Heilongjiang Province, China 
  • Received:2024-06-07 Accepted:2024-08-14 Online:2025-10-08 Published:2024-12-07
  • Contact: Yu Jing, Associate chief physician, Department of Endocrinology, Hongqi Hospital, Mudanjiang Medical College, Mudanjiang 157001, Heilongjiang Province, China
  • About author:Li Meiyun, MS, College of Life Sciences, Mudanjiang Medical University, Mudanjiang 157001, Heilongjiang Province, China; Department of Clinical Pathology, General Hospital of Southern Theater Command of People’s Liberation Army of China, Guangzhou 510030, Guangdong Province, China
  • Supported by:
    Mudanjiang City Guided Science and Technology Plan Project, No. HT2022JG125 (to WY); Heilongjiang Provincial Higher Education Institutions Basic Scientific Research Business Expense Research Project, No. 2021-KYYWF-0515 (to YJ)

摘要:


文题释义:

MXene纳米颗粒:MXene是一种由过渡金属碳化物、氮化物或碳氮化物构成的独特2D材料,因具有高电导率、高弹性模量、二维柔韧性以及可亲水表面,表现出优异的光学、电子和机械性能,在各种领域得到广泛研究。

MXene光热效应:MXene在接受光照射过程中会吸收光子所携带的能量,并与其晶格发生相互作用,从而引发粒子温度上升,这种机制使得MXene能够高效地将光能转化为热能,在医药、能源领域等发面发挥重要作用。


背景:MXene纳米颗粒具备出色的亲水性、生物相容性和抗菌特性,被广泛应用于创面、肿瘤、神经修复和心血管等治疗领域,目前尚不清楚MXene纳米颗粒对糖尿病创面愈合的作用。
目的:考察MXene纳米颗粒Ti3C2Tx的体外抗氧化、抗炎和光热抗菌活性,以及对糖尿病小鼠创面的修复效果。
方法:①体外实验:采用MTT法检测不同质量浓度Ti3C2Tx对小鼠成纤维细胞(NIH-3T3)的毒性作用。将NIH-3T3细胞暴露在H2O2中,采用MTT法检测不同质量浓度Ti3C2Tx对NIH-3T3细胞的保护作用。将NIH-3T3细胞暴露在H2O2中,分析光照(或不光照)处理下Ti3C2Tx(20 μg/mL)对NIH-3T3细胞活性氧生成的影响。将RAW264.7巨噬细胞分3组处理:对照组、脂多糖组与脂多糖+Ti3C2Tx组,采用实时定量PCR法检测细胞中特定基因(CD86、白细胞介素6、CD206、精氨酸酶1)的表达。将大肠杆菌(或金黄色葡萄球菌)分3组处理:对照组、Ti3C2Tx组、Ti3C2Tx光照组,利用平板菌落计数法计算细菌存活率。②体内实验:通过腹腔注射链脲佐菌素的方法构建ICR小鼠糖尿病模型,造模成功后在小鼠背部建立全层皮肤缺损创面,随机分3组干预:对照组(n=6)、Ti3C2Tx组(n=6)和Ti3C2Tx光照组(n=6),观察创面愈合情况,干预后第7天进行创面组织CD31、CD206免疫组化染色,干预后第7,14天进行创面组织苏木精-伊红与Masson染色。将Ti3C2Tx溶液注射至ICR小鼠皮下,在光照(或非光照)后,通过血生化检测分析Ti3C2Tx对小鼠的毒性作用。

结果与结论:①体外实验:Ti3C2Tx质量浓度在5-160 μg/mL范围内对NIH-3T3细胞无毒性作用,在质量浓度20 μg/mL时可增加NIH-3T3细胞存活率。10-80 μg/mL的Ti3C2Tx可显著提升H2O2干预下的NIH-3T3细胞存活率。Ti3C2Tx可显著抑制H2O2干预下NIH-3T3细胞活性氧的生成,光照处理可进一步提升Ti3C2Tx抑制活性氧生成的作用。Ti3C2Tx能够有效抑制由脂多糖诱导的巨噬细胞炎症,促进细胞向具有抗炎特性的M2型巨噬细胞转化。Ti3C2Tx与Ti3C2Tx光照均可显著抑制大肠杆菌和金黄色葡萄球菌的生长,并且Ti3C2Tx光照的抑制效果更显著。②体内实验:创面大体与组织学分析显示,Ti3C2Tx与Ti3C2Tx光照均可促进糖尿病小鼠创面的愈合,并且Ti3C2Tx光照的促进作用更显著。免疫组化染色结果显示,Ti3C2Tx与Ti3C2Tx光照均可抑制糖尿病创面的炎症反应并促进血管的生成,并且Ti3C2Tx光照的作用更显著。血生化检测结果显示,Ti3C2Tx与光照对小鼠无明显毒性作用。③结果表明,Ti3C2Tx借助独特的光热效应能够高效地展现抗氧化、抗炎和抗菌特性,促进糖尿病小鼠创面的愈合。

https://orcid.org/0009-0007-7815-6987 (李美运) 

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: Ti3C2Tx, MXene纳米颗粒, 糖尿病创面, 抗氧化, 抗炎, 抗菌, 工程化创面材料

Abstract: BACKGROUND: MXene nanoparticles, due to their unique hydrophilicity, biocompatibility, and antibacterial properties, are widely used in wound, tumor, nerve repair, and cardiovascular treatments. However, it is still unclear what effect MXene nanoparticles have on diabetic wound healing.
OBJECTIVE: To investigate the in vitro antioxidant, anti-inflammatory and photothermal antibacterial properties of MXene nanoparticles Ti3C2Tx as well as their effect on wound repair in diabetic mice.
METHODS: (1) In vitro experiments: The cytotoxicity of Ti3C2Tx nanoparticles on mouse fibroblasts (NIH-3T3) at various concentrations was evaluated using the methyl thiazolyl tetrazolium (MTT) assay. NIH-3T3 cells were exposed to H2O2, and the MTT assay was used to detect the protective effects of different mass concentrations of Ti3C2Tx on NIH-3T3 cells. NIH-3T3 cells were exposed to H2O2, and the effect of Ti3C2Tx (20 μg/mL) on the generation of reactive oxygen species in NIH-3T3 cells was analyzed under illumination (or no illumination) treatment. RAW264.7 macrophages were divided into three groups: control group, lipopolysaccharide group, and lipopolysaccharide+Ti3C2Tx group. Real-time quantitative PCR was used to detect the expression of specific genes (CD86, interleukin 6, CD206, arginase 1) in the cells. Escherichia coli (or Staphylococcus aureus) were divided into three groups: control group, Ti3C2Tx group, and Ti3C2Tx illumination group. The bacterial survival rate was calculated by plate colony counting method. (2) In vivo experiments: Streptozotocin was administered intraperitoneally to ICR mice to induce a diabetic condition. After successful modeling, a full-thickness skin defect wound was created on the back of the mice using a circular punch. The experiment was divided into three groups: control group (n=6), Ti3C2Tx group (n=6), and Ti3C2Tx illumination group (n=6). The wound healing was observed, and CD31 and CD206 immunohistochemical staining of wound tissue was performed on day 7 after intervention. Hematoxylin-eosin staining and Masson staining of wound tissue were performed on days 7 and 14 after intervention. Ti3C2Tx solution was injected subcutaneously into ICR mice. After illumination (or non-illumination) exposure, the toxic effects of Ti3C2Tx on mice were analyzed by blood biochemical detection. 
RESULTS AND CONCLUSION: (1) In vitro experiments: Ti3C2Tx showed no cytotoxicity on NIH-3T3 cells at mass concentrations ranging from 5-160 μg/mL. It increased the survival rate of NIH-3T3 cells at a mass concentration of 20 μg/mL. Ti3C2Tx at 10-80 μg/mL significantly improved the survival rate of NIH-3T3 cells under H2O2 intervention. Ti3C2Tx significantly inhibited the generation of reactive oxygen species in NIH-3T3 cells under the intervention of H2O2, and illumination treatment further enhanced the effect of Ti3C2Tx on inhibiting the generation of reactive oxygen species. Ti3C2Tx effectively inhibited macrophage inflammation induced by lipopolysaccharide and promoted the transformation of cells into M2 macrophages with anti-inflammatory properties. Both Ti3C2Tx and Ti3C2Tx illumination significantly inhibited the growth of Escherichia coli and Staphylococcus aureus, and the inhibitory effect of Ti3C2Tx illumination was more significant. (2) In vivo experiments: Gross and histological analyses of the wound surface showed that both Ti3C2Tx and Ti3C2Tx illumination promoted wound healing in diabetic mice, and the promotion effect of Ti3C2Tx irradiation was more significant. Immunohistochemical staining results showed that both Ti3C2Tx and Ti3C2Tx illumination inhibited the inflammatory response in diabetic wounds and promoted angiogenesis, and the effect of Ti3C2Tx illumination was more significant. Blood biochemical test results showed that Ti3C2Tx and illumination had no obvious toxic effects on mice. (3) These results indicate that Ti3C2Tx nanoparticles efficiently promote the healing of skin wounds in a diabetic mouse model through antioxidation, anti-inflammation, and antibacterial actions via photothermal effects.

Key words: Ti3C2Tx, MXene nanoparticle, diabetic wound, antioxidation, anti-inflammation, antibacterial, engineered wound material

中图分类号: