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1,8-桉叶油素对2型糖尿病胰岛β细胞铁死亡的干预作用及机制
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          杨 红    1, 2* ,任鹏艳 ,陈永鑫 ,姚喻霆 ,甘诗泉 ,刘 佳 ,陈婷婷 ,张 宝 ,沈祥春                              2, 3 # ,李 悦(1.贵阳
                            2, 3
                                      2, 3
                                                                           1
                                                                   1
                                                         2, 3
                                               2, 3
                                                                                   1
                                                                                                      1
          市妇幼保健院/贵阳市儿童医院药学部,贵阳 550003;2.贵州医科大学天然药物资源优效利用重点实验室,
          贵阳 561113;3.贵州医科大学药学院,贵阳 561113)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2024)03-0290-06
          DOI  10.6039/j.issn.1001-0408.2024.03.05
          摘   要  目的  研究1,8-桉叶油素对2型糖尿病胰岛β细胞铁死亡的干预作用及机制。方法  使用高糖作用于小鼠胰岛β细胞以
          建立细胞铁死亡模型,考察低、高剂量1,8-桉叶油素(0.25、0.5 μmol/L)对胰岛β细胞中Fe 水平的影响,并考察1,8-桉叶油素(0.5
                                                                               2+
          μmol/L)联合铁死亡诱导剂 Erastin(20 μmol/L)和抑制剂 Ferrostatin-1(20 μmol/L)后对胰岛 β 细胞中谷胱甘肽过氧化物酶 4
         (GPX4)、环氧合酶2(COX2)蛋白表达的影响。采用高脂高糖饲料饲养联合腹腔注射链脲佐菌素构建2型糖尿病小鼠模型,考察
          低、高剂量1,8-桉叶油素(50、200 mg/kg)对模型小鼠胰腺组织病理形态、铁含量以及GPX4、COX2蛋白表达的影响。结果  细胞
          实验结果显示,与模型组比较,经1,8-桉叶油素干预后,胰岛β细胞中Fe 水平显著降低(P<0.05);GPX4蛋白表达水平显著升高
                                                                  2+
         (P<0.05),COX2蛋白表达水平显著降低(P<0.05),且联合Ferrostatin-1后上述两种蛋白表达趋势相同,而联合Erastin后差异无
          统计学意义。动物实验结果显示,与模型组比较,经1,8-桉叶油素干预后,小鼠胰岛结构恢复完整,形态有所改善;胰腺组织中铁
          含量和COX2蛋白表达水平均显著降低(P<0.05),GPX4蛋白表达水平显著升高(P<0.05)。结论  1,8-桉叶油素对2型糖尿病胰
          岛β细胞损伤具有明显的改善作用,其作用机制可能与降低细胞内铁沉积以及调控铁死亡相关蛋白有关。
          关键词  1,8-桉叶油素;2型糖尿病;胰岛β细胞;铁死亡


          Interventional  effect  and  mechanism  of  1,8-cineole  on  pancreatic  β  cell  ferroptosis  induced  by  type  2
          diabetes
          YANG Hong ,REN Pengyan ,CHEN Yongxin ,YAO Yuting ,GAN Shiquan ,LIU Jia ,CHEN Tingting ,
                                                                                            1
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          ZHANG Bao ,SHEN Xiangchun ,LI Yue(1.  Dept.  of  Pharmacy,  Guiyang  Maternal  and  Child  Health  Care
                      1
                                       2, 3
                                                 1
          Hospital/Guiyang  Children’s  Hospital,  Guiyang  550003,  China;2.  Key  Laboratory  of  Optimal  Utilization  of
          Natural  Medicine  Resources,  Guizhou  Medical  University,  Guiyang  561113,  China;3.  College  of  Pharmacy,
          Guizhou Medical University, Guiyang 561113, China)
          ABSTRACT    OBJECTIVE  To  study  the  interventional  effect  and  mechanism  of  1,8-cineole  on  pancreatic  β  cell  ferroptosis
          induced  by  type  2  diabetes.  METHODS  In  vitro  ferroptosis  model  was  established  in  pancreatic  β  cells  of  mice  by  using  high
          glucose.  The  effects  of  low-dose  and  high-dose  1,8-cineole (0.25,  0.5  μmol/L)  on  the  level  of  Fe   in  pancreatic  β  cells  were
                                                                                       2+
          investigated.  The  effects  of  1,8-cineole (0.5  μmol/L)  combined  with  ferroptosis  inducer  Erastin (20  μmol/L)  and  ferroptosis
          inhibitor Ferrostatin-1 (20 μmol/L) on the protein expressions of glutathione peroxidase-4 (GPX4) and cyclooxygenase-2 (COX2)
          were  also  detected.  The  type  2  diabetes  model  mice  were  established  by  feeding  high-sugar  and  high-fat  diet  combined  with
          intraperitoneal  injection  of  streptozotocin. The  effects  of  low-dose  and  high-dose  1,8-cineole (50,  200  mg/kg)  on  the  pathological
          morphology  of  pancreatic  tissue,  the  content  of  iron  as  well  as  the  protein  expressions  of  GPX4  and  COX2  were  investigated.
          RESULTS  The  results  of  the  cell  experiment  showed  that  compared  with  the  model  group,  pretreatment  with  1,8-cineole
          significantly  reduced  intracellular  Fe levels  and  upregulated  GPX4  protein  expression,  while  downregulated  COX2  protein
                                       2+
                                                              expression  in  pancreatic  β  cells (P<0.05).  After  combining
              Δ 基金项目 国家自然科学基金项目(No.82060772);贵州省科技
                                                              with  Ferrostatin-1,  the  expression  trends  of  the  above  two
          计划项目(No.黔科合基础-ZK〔2022〕一般005);贵州省科技创新基地
          建设项目(No.黔科合中引地〔2023〕003);贵阳市卫生健康局科学技术               proteins  were  the  same,  while  there  was  no  statistically
          计划项目(No.〔2022〕筑卫健科技合同字第005号)                        significant  difference  after  combining  with  Erastin.  The  results
             *第一作者 主管药师。研究方向:中医药防治糖尿病。E-mail:
                                                              of  animal  experiments  showed  that  compared  with  the  model
          1329070275@qq.com
                                                              group, after intervention with 1,8-cineole, the structure of the
              # 通信作者 教授,博士生导师,博士。研究方向:心血管药物药理
          活性、中药与民族药。E-mail:shengxiangchun@126.com             pancreatic  islets  in  mice  recovered  intact  and  their  morphology


          · 290 ·    China Pharmacy  2024 Vol. 35  No. 3                               中国药房  2024年第35卷第3期
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