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小檗碱通过下调METTL3表达抑制肾癌细胞侵袭和迁移的机制                                                                    Δ



                *
          杨天宇 ,帅立雄,许竞泽,程馨阳,许志明,张永胜(苏州大学附属第二医院病理科,江苏 苏州 215004)
                                                       #
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2023)15-1863-06
          DOI  10.6039/j.issn.1001-0408.2023.15.14

          摘  要  目的  探讨小檗碱(BER)对人肾癌细胞侵袭、迁移的抑制作用及可能机制。方法  以人肾癌OSRC-2细胞为对象进行实
          验。采用alamarBlue法测定0(对照组)、25、50、75、100、125、150、175、200 μmol/L BER作用24、48 h后对OSRC-2细胞增殖的抑制
          作用。用0(对照组)、50、100 μmol/L BER作用于细胞48 h后,通过流式细胞术分析BER对细胞周期的影响;通过细胞划痕实验观
          察24、36 h时各组细胞的迁移能力;通过Transwell实验观察作用24 h时各组细胞的侵袭能力;并通过Western blot法检测上述药物
          作用48 h后细胞中甲基转移酶样蛋白3(METTL3)的蛋白表达,通过RNA甲基化定量试剂盒检测各组细胞内RNA的N6-甲基腺
          嘌呤(m6A)水平。结果  与对照组比较,不同浓度BER均可显著升高OSRC-2细胞的增殖抑制率(P<0.01),并呈时间和浓度依赖
          性趋势;50、100 μmol/L BER作用48 h后可将细胞周期阻滞在G0/G1期(P<0.01);50、100 μmol/L BER组细胞的迁移、侵袭能力均
          显著降低(P<0.05或P<0.01),细胞中METTL3蛋白的表达水平和RNA的m6A水平均显著降低(P<0.01)。结论  BER可通过下
          调METTL3的表达,进而抑制m6A水平,从而抑制人肾癌细胞的侵袭、迁移。
          关键词  小檗碱;人肾癌OSRC-2细胞;迁移;侵袭;甲基转移酶样蛋白3;N6-甲基腺嘌呤


          Mechanism of berberine inhibiting invasion and migration of renal carcinoma cells by down-regulating the
          expression of METTL3
          YANG Tianyu,SHUAI Lixiong,XU Jingze,CHENG Xinyang,XU Zhiming,ZHANG Yongsheng(Dept.  of
          Pathology, the Second Affiliated Hospital of Soochow University, Jiangsu Suzhou 215004, China)

          ABSTRACT   OBJECTIVE To investigate the inhibitory effect of berberine (BER) on the invasion and migration of human renal
          carcinoma  cells  and  its  potential  mechanism.  METHODS  Using  human  renal  carcinoma  OSRC-2  cell  as  object,  alamarBlue  assay
          was adopted to detect the inhibitory effects of 0 (control group), 25, 50, 75, 100, 125, 150, 175 and 200 μmol/L BER on the
          proliferation of OSRC-2 cell after treatment for 24 h and 48 h. After treated with 0(control group), 50, 100 μmol/L BER for 48 h,
          the effect of BER on cell cycle was analyzed by flow cytometry. The migration of OSRC-2 cells in 24 h and 36 h was observed by
          cell  scratch  test,  and  the  invasion  ability  of  OSRC-2  cells  in  24  h  was  detected  by  Transwell  assay.  The  protein  expression  of
          methyltransferase-like 3 (METTL3) was detected by Western blot after treatment for 48 h, and RNA methylation quantification kit
          was  used  to  detect  the  levels  of  N6-methyladenosine (m6A)  in  OSRC-2  cells.  RESULTS  Compared  with  control  group,  BER  at
          different concentrations could significantly decrease the survival rate of OSRC-2 cells (P<0.01), and showed a dose-dependent and
          time-dependent  manner.  After  48  h  of  BER  treatment  at  50,  100  μmol/L,  the  cell  was  arrested  in  G0/G1  phase (P<0.01).
          Compared  with  control  group,  the  migration  and  invasion  abilities  of  cells  in  50,  100  μmol/L  BER  group  were  significantly
          decreased (P<0.05  or  P<0.01);  the  protein  expression  of  METTL3  and  the  level  of  m6A  in  RNA  were  significantly  decreased
         (P<0.01). CONCLUSIONS BER can inhibit level of m6A by down-regulating the expression of METTL3, thereby inhibiting the
          invasion and metastasis of human renal carcinoma cells.
          KEYWORDS    berberine;  human  renal  carcinoma  OSRC-2  cell;  migration;  invasion;  methyltransferase-like  3;  N6-
          methyladenosine



                                                                 肾细胞癌(renal cell carcinoma,RCC)是泌尿系统常
             Δ 基金项目 苏州市科技发展项目(No.SYS2020146);苏州市医学
                                                             见的恶性肿瘤,约25%的患者最初即被诊断为晚期或转
          重点扶持学科(No.SZFCXK202137)
             *第一作者 住院医师,硕士。研究方向:肿瘤病理学。电话:                    移 性 RCC。 即 使 有 手 术 切 除 史 的 RCC 患 者 ,也 有
          0512-67783457。E-mail:445999886@qq.com
                                                             20%~40%会发生转移性RCC,而细胞因子治疗和分子
             # 通信作者 主任医师,硕士生导师。研究方向:肿瘤病理学。电
                                                                               [1]
          话:0512-67783457。E-mail:shengyongzh@126.com         靶向治疗的效果有限 。中药抗肿瘤作用及机制一直是

          中国药房  2023年第34卷第15期                                              China Pharmacy  2023 Vol. 34  No. 15    · 1863 ·
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