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·药学研究·


          苦参素对实验性自身免疫性脑脊髓炎小鼠的改善作用及机制
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          李新雨 ,楚尧娟,豆萌萌,马 睿,黎思露,朱 琳(郑州大学第一附属医院药学部,郑州 450052)
                *
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2023)10-1177-05
          DOI  10.6039/j.issn.1001-0408.2023.10.05

          摘  要  目的  探讨苦参素能否通过调控铁死亡途径发挥对实验性自身免疫性脑脊髓炎(EAE)小鼠的改善作用。方法  将30只
          雌性C57BL/6小鼠随机分为正常组、模型组、苦参素组,每组10只。模型组和苦参素组小鼠以含灭活结核分枝杆菌和MOG35-55
          的抗原乳剂诱导复制EAE模型。苦参素组小鼠自免疫后第7天开始腹腔注射苦参素注射液(50 mg/kg),正常组和模型组小鼠腹
          腔注射等体积生理盐水,每天1次至免疫后第18天。记录各组小鼠的神经功能学评分,以苏木精-伊红染色法和勒克斯光蓝染色
          法分别观察脊髓组织炎症细胞浸润和髓鞘脱失情况,以定量逆转录聚合酶链反应法和Western blot法分别检测其转铁蛋白受体1
         (TFR1)、核受体共激活因子4(NCOA4)、膜铁转运辅助蛋白(Heph)mRNA和胱氨酸-谷氨酸反向转运体(xCT)、谷胱甘肽过氧化物
          酶4(GPx4)蛋白的表达情况。结果  与正常组比较,模型组小鼠的累计神经功能学评分显著升高(P<0.01),脊髓组织内炎症细胞
          浸润和髓鞘脱失现象明显,相关评分均显著升高(P<0.01),髓鞘组织中TFR1、NCOA4 mRNA的表达均显著上调,Heph mRNA和
          xCT、GPx4 蛋白的表达均显著下调(P<0.05 或 P<0.01)。与模型组比较,苦参素组小鼠上述指标均显著改善(P<0.05 或 P<
          0.01)。结论  苦参素对EAE小鼠有一定的改善作用,且这种作用可能与调节铁死亡中的铁代谢途径和xCT/GPx4通路有关。
          关键词  苦参素;实验性自身免疫性脑脊髓炎;铁代谢;胱氨酸-谷氨酸反向转运体/谷胱甘肽过氧化物酶4通路;小鼠

          Improvement effect and mechanism of matrine on experimental autoimmune encephalomyelitis mice
          LI Xinyu,CHU Yaojuan,DOU Mengmeng,MA Rui,LI Silu,ZHU Lin(Dept.  of  Pharmacy,  the  First Affiliated
          Hospital of Zhengzhou University, Zhengzhou 450052, China)

          ABSTRACT   OBJECTIVE  To  investigate  whether  matrine  exerts  improvement  effect  on  experimental  autoimmune  encephalomyelitis
         (EAE)  mice by  regulating ferroptosis  pathway.  METHODS  Totally 30  female C57BL/6  mice were  randomly assigned  into normal
          group, model group and matrine group, with 10 mice in each group. Model group and matrine group were given antigen emulsion
          containing inactivated Mycobacterium tuberculosis and MOG35-55 to induce EAE model. Matrine group was injected with Matrine
          injection (50  mg/kg)  intraperitoneally  since  the  7th  day  after  immunization;  normal  group  and  model  group  were  given  constant
          volume  of  normal  saline  intraperitoneally,  once  a  day,  since  18th  day  after  immunization. The  neurofunctional  score  of  mice  was
          recorded,  and  hematoxylin  and  eosin  staining  and  Luxol  fast  blue  staining  were  used  to  observe  inflammatory  cell  infiltration  and
          demyelination in spinal cord tissue. The quantitative reverse transcription PCR and Western blot assay were performed to determine
          the mRNA expressions of transferrin receptor 1 (TFR1), nuclear receptor coactivator 4 (NCOA4) and hephaestin (Heph), and the
          protein  expressions  of  system  Xc (xCT)  and  glutathione  peroxidase  4 (GPx4).  RESULTS  Compared  with  normal  group,
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          accumulative  neurofunctional  score  was  significantly  increased  in  model  group (P<0.01);  inflammatory  cell  infiltration  and
          demyelination  were  obvious  in  spinal  cord  tissue,  and  related  scores  were  increased  significantly (P<0.01).  The  mRNA
          expressions  of  TFR1  and  NCOA4  in  myelin  tissue  were  up-regulated  significantly,  while  the  mRNA  expression  of  Heph  and  the
          protein expressions of xCT and GPx4 were down-regulated significantly (P<0.05 or P<0.01). Compared with model group, above
          indexes of matrine group were all improved significantly (P<0.05 or P<0.01). CONCLUSIONS Matrine can improve EAE mice,
          the mechanism of which may be associated with regulating iron metabolism pathway and xCT/GPx4 pathway in ferroptosis.
          KEYWORDS    matrine; experimental autoimmune encephalomyelitis; iron metabolism; xCT/GPx4 pathway; mice



                                                                 多发性硬化症(multiple sclerosis,MS)是一种以中
             Δ 基金项目 国家自然科学基金资助项目(No.31870334);河南省            枢神经系统(central nervous system,CNS)脱髓鞘病变为
          医学科技攻关计划项目(No.SBGJ202102087);河南省重点研发与推
                                                             主要特点的自身免疫性神经退行性疾病。铁死亡是一
          广专项(科技攻关)项目(No.222102310346)
                                                             种区别于凋亡、坏死、自噬的铁依赖性细胞程序性死亡
             *第一作者 硕士研究生。研究方向:临床药学、药理学。E-mail:
          lxy2936@163.com                                    方式,其实质是铁依赖性脂质活性氧堆积,使得细胞内
                                                                                          [1]
             # 通信作者 主任药师,硕士生导师,博士。研究方向:中枢神经系                 氧化还原失衡,从而导致细胞死亡 。已有研究发现,铁
          统疾病与免疫药理。E-mail:zhulin66zhulin@163.com             死亡能够介导 MS 少突胶质细胞脱髓鞘,其中铁代谢紊


          中国药房  2023年第34卷第10期                                              China Pharmacy  2023 Vol. 34  No. 10    · 1177 ·
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