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小檗碱诱导骨肉瘤细胞铁死亡的作用及机制
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          姬健钧 ,邱文奎(开封市中心医院骨科二病区,河南 开封 475000)
                          #
          中图分类号  R965;R285      文献标志码  A      文章编号  1001-0408(2024)03-0296-08
          DOI  10.6039/j.issn.1001-0408.2024.03.06

          摘   要  目的  探讨小檗碱对MG63骨肉瘤细胞铁死亡的影响及机制。方法  以不加药的细胞为对照,用不同浓度(2.5、5.0、10.0
          μmol/L)小檗碱作用于细胞24 h,检测细胞存活率、铁死亡相关指标[细胞核增殖相关抗原Ki-67(Ki67)、线粒体超微结构、Fe 、活
                                                                                                          2+
          性氧(ROS)、丙二醛(MDA)和谷胱甘肽(GSH)]变化、信号转导及转录活化因子3(STAT3)与DNA结合活性以及磷酸化STAT3(p-
          STAT3)、肿瘤蛋白53(p53)和溶质载体家族7成员11(SLC7A11)蛋白表达水平。为观察p53在小檗碱诱导细胞铁死亡中的作用,
          转染p53 siRNA,将细胞分为对照组、p53 siRNA组、小檗碱组和p53 siRNA+小檗碱组,以10.0 μmol/L小檗碱作用24 h后,检测细
          胞内p53和SLC7A11蛋白表达水平、线粒体膜电位、GSH水平以及MDA含量。为探究STAT3在小檗碱调控p53/SLC7A11信号通
          路中的作用,转染STAT3过表达质粒,将细胞分为对照组、小檗碱组、STAT3组和STAT3+小檗碱组,以10.0 μmol/L小檗碱作用24
          h后,检测细胞内p-STAT3、STAT3、p53和SLC7A11蛋白表达水平。结果  与对照细胞比较,2.5、5.0、10.0 μmol/L小檗碱均能降低
          细胞存活率和细胞内Ki67蛋白表达,引起线粒体形态改变,升高细胞内Fe 、ROS和MDA水平以及p53蛋白表达水平,降低GSH
                                                                   2+
          水平、STAT3与DNA的结合活性以及p-STAT3和SLC7A11蛋白表达水平,差异均有统计学意义(P<0.05或P<0.01)。与小檗碱
          组比较,p53 siRNA+小檗碱组细胞内p53蛋白表达水平和MDA水平降低,SLC7A11蛋白表达水平、线粒体膜电位以及GSH水平
          升高,差异均有统计学意义(P<0.01)。与小檗碱组比较,STAT3+小檗碱组细胞内p-STAT3、STAT3、SLC7A11蛋白表达水平升高,
          p53 蛋白表达水平降低,差异均有统计学意义(P<0.01)。结论  小檗碱可通过 STAT3/p53/SLC7A11 信号通路诱导 MG63 细胞铁
          死亡。
          关键词  小檗碱;铁死亡;骨肉瘤;信号转导及转录活化因子3;肿瘤蛋白53;溶质载体家族7成员11


          Effect and mechanism of berberine-induced ferroptosis in osteosarcoma cells
          JI Jianjun,QIU Wenkui(Orthopedics  Department  Ward  2,  Kaifeng  Central  Hospital,  Henan  Kaifeng  475000,
          China)

          ABSTRACT    OBJECTIVE  To  investigate  the  effect  of  berberine  on  ferroptosis  in  MG63  osteosarcoma  cells  and  its  mechanism.
          METHODS  Using  cells  without  drug  treatment  as  control,  the  cell  viability,  proliferation,  the  related  indexes  of  ferroptosis
          [nuclear  proliferation  associated-antigen (Ki67),  mitochondrial  ultrastructure,  ferric  ion (Fe ),  reactive  oxygen  species (ROS),
                                                                                 2+
          malondialdehyde (MDA),  and  glutathione (GSH)],  the  protein  expression  of  signal  transducer  and  activator  of  transcription  3
         (STAT3),  tumor  protein  53 (p53),  and  solute  carrier  family  7  member  11 (SLC7A11)  were  detected  after  being  treated  with
          different  concentrations  of  berberine.  Cells  were  transfected  with  p53  siRNA  and  then  assigned  to  the  control  group,  p53  siRNA
          group,  berberine  group,  and  p53  siRNA+berberine  group  to  explore  the  role  of  p53  in  berberine-induced  ferroptosis.  After  24  h
          incubation  with  10.0  μmol/L  berberine,  the  protein  expressions  of  p53  and  SLC7A11,  the  levels  of  mitochondrial  membrane
          potential, GSH, and MDA content were determined. Cells were transfected with STAT3 overexpressed plasmid and then assigned to
          the control group, berberine group, STAT3 group, and STAT3+berberine group to explore the effect of STAT3 on the regulation of
          the  p53/SLC7A11  pathway. After  24  h  incubation  with  10  μmol/L  berberine,  the  protein  expressions  of  p-STAT3,  STAT3,  p53,
          and SLC7A11 were detected. RESULTS Compared with the control cell, the concentrations of 2.5, 5.0 and 10.0 μmol/L berberine
          could  reduce  the  cell  viability  and  expression  of  Ki67,  and  induce  the  morphological  changes  in  ferroptosis-related  mitochondria,
          increase  the  levels  of  Fe ,  ROS  and  MDA,  and  the  protein  expression  of  p53,  reduce  the  level  of  GSH,  the  binding  activity  of
                             2+
          STAT3 with DNA, and the protein expressions of p-STAT3 and SLC7A11; the above differences were statistically significant (P<
                                                              0.05  or  P<0.01).  Compared  with  the  berberine  group,
              Δ 基金项目 河南省医学科技攻关计划项目(No.LHGJ20210834)           significantly  down-regulated  p53  protein  expression  and  MDA
             * 第一作者 主 治 医 师 ,硕 士 。 研 究 方 向 :骨 科 学 。 E-mail:
                                                              level,  up-regulated  SLC7A11  protein  expression,  and
          jijianjun653@163.com
              # 通信作者 副主任医师,硕士。研究方向:骨科学。E-mail:                increased  mitochondrial  membrane  potential  and  GSH  level
          526087266@qq.com                                    were  observed  in  the  p53  siRNA+berberine  group (P<0.01).


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