小檗碱对ApoE^(-/-)小鼠动脉粥样硬化的影响及机制研究  

The anti-atherosclerotic effect and mechanism study of berberine in hyperlipidemic ApoE^(-/-) mice

作　　者：左璇[1] 罗金雀 姜新海 韩小婉[1] 王潇[1] 刘鹏[1] 李依宁 王瑞海 许艳妮[1] 司书毅[1] ZUO Xuan;LUO Jin-que;JIANG Xin-hai;HAN Xiao-wan;WANG Xiao;LIU Peng;LI Yi-ning;WANG Rui-hai;XU Yan-ni;SI Shu-yi(NHC Key Laboratory of Biotechnology of Antibiotics,National Center for New Microbial Drug Screening,Institute of Medicinal Biotechnology,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100050,China)

机构地区：[1]中国医学科学院北京协和医学院医药生物技术研究所卫健委抗生素生物工程重点实验室国家新药(微生物)筛选实验室,北京100050

出　　处：《药学学报》2019年第1期104-110,共7页Acta Pharmaceutica Sinica

基　　金：中国医学科学院医学与健康科技创新工程专项经费(2016-I2M-1-011);国家自然科学基金面上项目(81573482);国家重大新药创制专项(2018ZX09711001-003-006)

摘　　要：本文旨在高脂喂养的ApoE^(-/-)小鼠模型中研究小檗碱(berberine, BBR)抗动脉粥样硬化的作用及可能的作用机制,为BBR的临床研究打下基础。将7周龄的雄性ApoE^(-/-)小鼠,随机分为对照组(普通饲料)、模型组、BBR组(BBR-L:50 mg·kg^(-1)、BBR-H:150 mg·kg^(-1))、阿托伐他汀组(5 mg·kg^(-1))。高脂饲料喂养ApoE^(-/-)小鼠12周建立实验性高脂血症动物模型,同时给予不同剂量的BBR。12周后,分离主动脉进行油红染色,统计各组ApoE^(-/-)小鼠主动脉斑块情况;采用悬液芯片试剂盒检测血清中炎症因子水平;应用试剂盒测定肝脏总胆固醇、甘油三酯和游离脂肪酸的含量, Western blot方法检测肝脏中炎症信号通路相关蛋白以及胆固醇转运相关基因的表达情况。所有动物实验均按照医药生物技术研究所实验室动物管理条例进行。结果表明,与模型组相比, BBR可以显著降低主动脉全长中的斑块面积,抑制血清中促炎性因子IL-1β等的表达,减少肝脏中总胆固醇等的聚积;机制研究结果显示, BBR能显著抑制MAPKs和NF-κB信号通路的活化,显著上调胆固醇代谢调节蛋白LDLR、ABCA1等的表达。总之,BBR能显著抑制高脂饮食喂养的ApoE^(-/-)小鼠动脉粥样硬化斑块的形成,其作用机制与抑制炎症和降低胆固醇的聚积有关。The purpose of this research is to study the anti-atherosclerotic effects and mechanisms of berberine(BBR) in high fat diet(HFD) fed ApoE^-/-mice, and then to lay a solid foundation of the clinical studies of BBR treatment. The hyperlipidemic ApoE^-/-mice model was established by feeding HFD for 12 weeks. Mice were randomly divided into control group(chow diet), model group, BBR group(BBR-L: 50 mg · kg^-1, BBR-H: 150 mg · kg^-1) and atorvastatin(5 mg · kg^-1) group. Mice were intragastric administration with BBR in 0.5% sodium salt of caboxy methyl cellulose. After 12 weeks, enface aortas were stained with oil red O, and the lesions area wereanalyzed by Image J software. The inflammatory factor levels were detected by suspension microarray kits. Liver total cholesterol(TC), triglyceride(TG) and free fatty acids(FFA) were determined by commercial kits. Western blot was performed to examine the inflammatory pathway related and cholesterol and lipid transport related proteins’ expression. All animal experiments were performed in accordance with the Regulation on the Administra-tion of Laboratory Animals of Institute of Medicinal Biotechnology. After 12 weeks treatment, compared with model group, BBR treatment significantly reduced the lesions area of en face aortas and obviously inhibited serum proinflammatory factors such as IL-1β and IL-6 compared with model group. In addition, BBR treatment obviously reduced liver TC, TG and FFA levels compared with model group. Furthermore, mechanic study showed that BBR significantly inhibited MAPKs and NF-κB pathways, and increased cholesterol and lipid regulated proteins expres-sion such as p-AMPK, LDLR, ABCA1 and SR-BI. In conclusion, BBR can obviously reduce enface aortas lesions in ApoE^-/-mice, which is related to inhibit inflammation and liver cholesterol and lipid accumulation.

关 键 词：小檗碱 动脉粥样硬化 ApoE^-/- 炎症 胆固醇 

分 类 号：R966[医药卫生—药理学]