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南京医科大学学报(自然科学版)                                  第41卷第3期
               ·324 ·                     Journal of Nanjing Medical University(Natural Sciences)   2021年3月


             ·基础研究·


              甲基苯丙胺引起 BV2 小胶质细胞炎性反应:基于 Toll 样受体⁃
              Peli1信号通路的研究



              须怀沙 ,王易欣 ,陈旭锋 ,蒋 雷 ,王                军 ,张久平    4*
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               南京鼓楼医院医学心理科,江苏            南京    210008;南京医科大学公共卫生学院卫生毒理系,江苏                 南京   211166;南京医科
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              大学第一附属医院急诊科,江苏 南京               210029;南京医科大学附属脑科医院儿童心理卫生研究中心,江苏                    南京 210029
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             [摘    要] 目的:探讨Toll样受体(Toll like receptor,TLR)⁃E3泛素连接酶Pellino 1(Peli1)介导的炎性通路在甲基苯丙胺(meth⁃
              amphetamine,Meth)引起BV2小胶质细胞炎性反应中的作用。方法:利用Western blot观察Meth作用后Toll样家族中多种TLR
              的表达及其下游接头蛋白髓样分化因子(myeloid differentiation factor 88,MyD88)、β干扰素 TIR 结构域衔接蛋白(TIR⁃domain⁃
              containing adaptor inducing interferon⁃β,TRIF)水平的改变,同时观察上述接头蛋白下游Peli1蛋白的表达,利用ELISA、实时定
              量 PCR(real time⁃PCR)及 Western blot 观察 Peli1 调节的下游炎性因子及信号通路的改变。结果:Meth 作用于 BV2 细胞后,
              TLR3、TLR4、TLR7、TLR8、TLR11在特定时间内表达明显上调,同时下游MyD88及TRIF蛋白表达显著增加,其中TRIF具有浓
              度依赖效应。Meth作用后亦可引起泛素化蛋白Peli1的表达,而利用RNA干扰的方法将Peli1下调后,炎性因子诱导型一氧化
              氮合酶(inducible nitric oxide synthase,iNOS)、肿瘤坏死因子(tumor necrosis factor,TNF)⁃α、白细胞介素(interleukin⁃ 6,IL)⁃6表
              达下降,核因子(nuclear factor,NF)⁃κB的激活明显缓解。结论:TLR介导的炎性信号在Meth引起BV2细胞炎性反应过程中发
              挥重要作用。因此,基于TLRs⁃Peli1靶信号轴的干预可能为Meth神经毒性的干预提供靶点,具有潜在的应用意义。
             [关键词] 甲基苯丙胺;Toll样受体家族;Peli1;神经炎性反应;BV2细胞
             [中图分类号] R392.12                   [文献标志码] A                       [文章编号] 1007⁃4368(2021)03⁃324⁃07
              doi:10.7655/NYDXBNS20210303


              Methamphetamine induced neuroinflammation in microglial BV2 cells based on the roles
              of Toll like receptors⁃Peli1 pathway

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              XU Huaisha ,WANG Yixin ,CHEN Xufeng ,JIANG Lei ,WANG Jun ,ZHANG Jiuping  4*
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              1 Department of Clinical Psychology,Nanjing Drum Tower Hospital,Nanjing 210008;Department of Toxicology,
              School of Public Health,Nanjing Medical University,Nanjing 211166;Department of Emergency,the First Affiliated
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              Hospital of Nanjing Medical University,Nanjing 210029;Child Mental Health Research Center,Nanjing Brain
              Hospital Affiliated to Nanjing Medical University,Nanjing 210029,China
             [Abstract] Objective:This study aims to investigate the roles of Toll like receptor(TLR)⁃Pellino 1(Peli1)axis in methamphetamine
             (Meth)⁃mediated microglial inflammation and pathway in BV2 cells. Methods:Western blot was used to observe the expression of Toll
              like receptors(TLR),the downstream adaptor proteins of myeloid differentiation factor 88(MyD88)and TIR⁃domain⁃containing adaptor
              inducing interferon⁃β(TRIF). In parallel,the expression of Peli1 protein was detected by Western blot. The downstream inflammatory
              factors and signal pathway regulated by Peli1 were observed by ELISA,real⁃time PCR and Western blot. Results:The expression of
              TLR3,TLR4,TLR7,TLR8 and TLR11 was significantly up⁃regulated after Meth treatment in BV2 cells. Meanwhile,the expression of
              MyD88 and TRIF was significantly increased,and TRIF level exhibited a concentration⁃dependent effect. Meanwhile,Meth obviously
              induced the expression of ubiquitin protein Peli1. Noteworthily,after Peli1 was down⁃regulated by RNA interference,the expression of
              inflammatory factors including inducible nitric oxide synthase(iNOS),tumor necrosis factor(TNF)⁃α and interleukin(IL)⁃6 were
              dramatically decreased,accompanied by the significant attenuation of nuclear factor(NF)⁃ κB activation. Conclusion:The TLRs ⁃

             [基金项目] 国家自然科学基金(81673213);江苏省自然科学基金(BK20191349)
              ∗
              通信作者(Corresponding author),E⁃mail:zjpcn@126.com
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