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第44卷第10期                           南京医科大学学报(自然科学版)
                 2024年10月                   Journal of Nanjing Medical University(Natural Sciences)     ·1353 ·


               ·基础研究·

                利拉鲁肽对二氧化硅诱导巨噬细胞极化的影响及机制



                杨雨欣 ,刘晨阳 ,金琳羚 ,周 宏 ,何梦钰 ,孔                   辉 ,解卫平    1*
                                       1
                              1
                      1
                                                               1
                                                       1
                                               2
                南京医科大学第一附属医院呼吸与危重症医学科,江苏                     南京    210029;南京医科大学附属无锡人民医院呼吸与危重症医
                1                                                        2
                学科,江苏 无锡       214023
               [摘   要] 目的:初步探讨利拉鲁肽(liraglutide,Li)对二氧化硅(SiO2)诱导巨噬细胞极化的影响及其机制。方法:将巨噬细胞
                分为5组,分别为:Control组、SiO2组、SiO2+Li(10 nmol/L)组、SiO2+Li(100 nmol/L)组及SiO2+Li(1 000 nmol/L)组。CCK⁃8法检测
                巨噬细胞活性;ELISA法测定各组细胞白细胞介素(interlukin,IL)⁃1β、IL⁃10、转化生长因子(transforming growth factor,TGF)⁃β1
                分泌水平;Western blot 测定 NOD 样受体蛋白 3(NOD⁃like receptor protein 3,NLRP3)、半胱天冬蛋白酶 1(cysteinyl aspartate
                specific proteinase 1,Caspase⁃1)p20、精氨酸酶(arginase,Arg)⁃1 表达;JC⁃1 荧光探针染色测量各组巨噬细胞线粒体膜电位;
                DCFH⁃DA 探针检测细胞内活性氧(reactive oxygen species,ROS)水平。结果:与 Control 组比较,SiO2组 NLRP3、Caspase⁃1 p20、
                Arg⁃1 蛋白水平显著升高,IL⁃1β、IL⁃10、TGF⁃β1 分泌显著增加,差异有统计学意义(P 均< 0.001);与 SiO2 组比较,SiO2+Li
               (10 nmol/L)组、SiO2+Li(100 nmol/L)组及SiO2+Li(1 000 nmol/L)组NLRP3、Caspase⁃1 p20、Arg⁃1蛋白水平降低,IL⁃1β、IL⁃10、TGF⁃β1
                分泌减少,差异有统计学意义(P均< 0.05)。SiO2组细胞内线粒体膜电位较Control 组下降;与SiO2组比较,SiO2+Li(10 nmol/L)
                组、SiO2+Li(100 nmol/L)组及SiO2+Li(1 000 nmol/L)组细胞内线粒体膜电位上升。SiO2组ROS相对荧光强度较Control组增加,
                差异有统计学意义(P < 0.05);与SiO2组比较,SiO2+Li(10 nmol/L)组、SiO2+Li(100 nmol/L)组及SiO2+Li(1 000 nmol/L)组ROS相
                对荧光强度逐渐降低,差异有统计学意义(P < 0.05)。结论:Li可通过改善SiO2诱导的线粒体功能障碍,减轻ROS氧化应激,阻
                止NLRP3炎症小体活化,抑制SiO2诱导的M2型巨噬细胞极化。
               [关键词] 利拉鲁肽;二氧化硅;巨噬细胞;NLRP3
               [中图分类号] R563.13                   [文献标志码] A                     [文章编号] 1007⁃4368(2024)10⁃1353⁃09
                doi:10.7655/NYDXBNSN240540


                Effects and potential mechanisms of liraglutide on silica ⁃ induced polarization of

                macrophages
                           1            1          1           2           1          1           1*
                YANG Yuxin ,LIU Chenyang ,JIN Linling ,ZHOU Hong ,HE Mengyu ,KONG Hui ,XIE Weiping
                Department of Respiratory and Critical Care Medicine,the First Affiliated Hospital of Nanjing Medical University,
                1
                Nanjing 210029;Department of Pulmonary and Critical Care Medicine,the Affiliated Wuxi People’s Hospital of
                               2
                Nanjing Medical University,Wuxi 214023,China


               [Abstract] Objective:To investigate the effects and potential mechanisms of liraglutide(Li)on macrophages polarization induced by
                silica(SiO2). Methods:Macrophages were divided into five groups:the control group,SiO2 group,SiO2+Li(10 nmol/L)group,SiO2+Li
               (100 nmol/L)group,and SiO2+Li(1 000 nmol/L)group. The cytotoxicity of Li on the macrophages was assessed using the CCK⁃8 assay;

                levels of interleukin(IL)⁃1β,IL⁃10 and transforming growth factor(TGF)⁃β1 in each group were measured by ELISA. Western blot
                was used to determine the expression levels of NOD⁃like receptor protein 3(NLRP3),cysteinyl aspartate specific proteinase(Caspase⁃
                1)p20,and arginase⁃1(Arg⁃1). Mitochondrial membrane potential in the macrophages was detected by using JC⁃1 fluorescent probe
                staining. Reactive oxygen species(ROS)levels in the macrophages from all groups were measured by using DCFH⁃DA probe. Results:

                Compared with the control group,the SiO2 group showed significantly increased protein levels of NLRP3,Caspase⁃1 p20,and Arg⁃1,as
                well as elevated secretion of IL⁃1β,IL⁃10,and TGF⁃β1(all P < 0.010). Compared with the SiO 2 group,the SiO2+Li(10 nmol/L),SiO2+Li

               [基金项目] 国家自然科学基金(81870054,82000061);江苏省科教能力提升工程:江苏省医学创新中心(CXZX202206);南京
                医科大学第一附属医院青年基金培育计划(PY2022012)
                ∗
                通信作者(Corresponding author),E⁃mail:wpxie@njmu.edu.cn
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