基于Wnt/β-catenin通路探讨通心络胶囊对ApoE-/-动脉粥样硬化小鼠炎症水平的影响Effect of Tongxinluo Capsules on Inflammation in Apo E-/-Atherosclerotic Mice Based on Wnt/β-catenin Pathway
姜雪娇,李金霞,张秋云,宗文静
摘要(Abstract):
目的 探究通心络胶囊对ApoE-/-小鼠动脉粥样硬化形成的影响及其通过Wnt/β-catenin信号通路产生的作用机制。方法 将24只ApoE-/-小鼠随机分为正常饮食组(n=6)及高脂饮食组(n=18)。高脂饮食组喂养8周后,随机分为阿托伐他汀组(n=6)、通心络胶囊组(n=6)、模型组(n=6),并分别给予阿托伐他汀4.8 mg/kg、通心络胶囊超微粉1.5 g/kg以及同体积的生理盐水,每日1次,持续8周。末次给药后禁食12 h,收集各组小鼠主动脉组织进行苏木素-伊红(HE)及油红O染色,观察主动脉斑块情况;收集小鼠血清,采用酶联免疫吸附法(ELISA)检测肿瘤坏死因子-α(TNF-α)和白细胞介素-6(IL-6)的含量;并通过蛋白免疫印迹法(Western blotting)和实时荧光定量聚合物酶链式反应(Real-time PCR)检测主动脉组织中Wnt1、Wnt3a、β-catenin蛋白及基因表达量的变化。结果 与正常组相比较,模型组小鼠的斑块面积明显增加,血清中的炎症因子TNF-α和IL-6含量增加。与模型组相比较,通心络胶囊能够明显降低ApoE-/-小鼠粥样硬化斑块面积,降低血清中TNF-α和IL-6含量,降低主动脉组织中Wnt1、Wnt3a、β-catenin蛋白表达和基因水平。结论 通心络胶囊可降低ApoE-/-动脉粥样硬化小鼠血清中炎症因子表达,降低斑块面积,其机制可能与其调控Wnt/β-catenin信号通路有关。
关键词(KeyWords): 动脉粥样硬化;Wnt/β-catenin通路;炎症;通心络胶囊;ApoE-/-小鼠
基金项目(Foundation): 国家自然科学基金青年基金项目(81804016,82104775)
作者(Author): 姜雪娇,李金霞,张秋云,宗文静
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