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红花多糖对人肝癌细胞凋亡和自噬的影响及潜在机制
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          白皓天 ,杨 婧 ,李娅兰 ,牛 捷 ,张翔珂 ,张筠昊 ,梁 霄 ,王 锐 (1.黑龙江中医药大学药学院,
          哈尔滨 150040;2.黑龙江中医药大学基础医学院,哈尔滨 150040;3.教育部北药基础与应用研究重点实验
          室,哈尔滨 150040)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2022)24-2962-07
          DOI  10.6039/j.issn.1001-0408.2022.24.04
          摘   要  目的  探讨红花多糖(SPS)对人肝癌细胞凋亡和自噬的影响及潜在机制。方法 以人肝癌细胞HepG2、SMMC-7721、Huh-
          7为研究对象,以SPS为干预药物,筛选敏感细胞、药物干预浓度及干预时间。以所选敏感细胞为对象,以不同浓度的SPS进行干
          预,观察其凋亡、迁移、克隆形成、形态、自噬发生情况,并检测其凋亡、自噬和磷脂酰肌醇-3-激酶(PI3K)/蛋白激酶B(Akt)/哺乳动
          物雷帕霉素靶蛋白(mTOR)信号通路相关蛋白的表达情况。结果  SPS可抑制人肝癌细胞HepG2等3种细胞的增殖,其对SMMC-
          7721细胞的半数抑制浓度显著低于其余2种细胞(P<0.05)。经低、中、高浓度(20、40、80 μmol/L)SPS干预48 h后,SMMC-7721
          细胞凋亡较对照组有所增加,24、48 h 的细胞迁移率(24 h 的 SPS 低浓度组除外)和 24 h 的细胞克隆形成率均较对照组显著降低
         (P<0.05或P<0.01);与对照组比较,SPS各浓度组细胞数量均明显减少,自噬水平均有所提升,细胞中剪切的胱天蛋白酶3、胱天
          蛋白酶 9、Bax、beclin-1 蛋白的相对表达量和微管相关蛋白 1 轻链 3Ⅱ(LC3Ⅱ)与 LC3Ⅰ的比值均显著升高,Bcl-2、p62、PI3K、
          mTOR、Akt 蛋白的相对表达量均显著降低(P<0.05 或 P<0.01)。结论  SPS 可抑制人肝癌 SMMC-7721 细胞的增殖并诱导其凋
          亡、自噬,这种作用可能与抑制PI3K/Akt/mTOR信号通路有关。
          关键词  红花多糖;人肝癌细胞;SMMC-7721;凋亡;自噬;磷脂酰肌醇-3-激酶/蛋白激酶B/哺乳动物雷帕霉素靶蛋白信号通路

          Effect  and  potential  mechanism  of  Safflower  polysaccharide  on  apoptosis  and  autophagy  of  human
          hepatocellular carcinoma cells
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          BAI Haotian ,YANG Jing ,LI Yalan ,NIU Jie ,ZHANG Xiangke ,ZHANG Junhao ,LIANG Xiao ,WANG Rui     1, 3
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         (1.  College  of  Pharmacy,Heilongjiang  University  of  Chinese  Medicine,Harbin  150040,  China;2.  College  of
          Basic  Medicine,  Heilongjiang  University  of  Chinese  Medicine,Harbin  150040,China;3.  Key  Laboratory  of
          Basic and Application Research of Beiyao,Ministry of Education,Harbin 150040,China)
          ABSTRACT    OBJECTIVE  To  investigate  the  effect  and  potential  mechanism  of  safflower  polysaccharide  on  apoptosis  and
          autophagy of human hepatocellular carcinoma cells. METHODS Human hepatocellular carcinoma HepG2, SMMC-7721 and Huh-7
          cells  were  selected  as  subjects,  and  safflower  polysaccharide  was  used  as  intervention  drug  to  screen  sensitive  cells,  intervention
          concentration  and  intervention  time.  The  sensitive  cells  were  selected  as  the  object  and  intervened  with  different  concentrations  of
          safflower  polysaccharide;  the  apoptosis,  migration,  clone  formation,  morphology  and  autophagy  of  human  hepatocellular
          carcinoma cells were observed; the expressions of apoptosis, autophagy and phosphatidyl inositol-3-kinase (PI3K)/protein kinase B
         (Akt)/mammals  rapamycin  target  protein (mTOR)  signaling  pathway  related  protein  were  detected.  RESULTS  safflower
          polysaccharide  could  inhibit  the  proliferation  of  3  kinds  of  human  hepatocellular  carcinoma  cells,  and  the  half  inhibition
          concentration  of  it  to  SMMC-7721  cells  was  significantly  lower  than  to  other  two  kinds  of  cells (P<0.05). After  48  h  intervened
          with low, medium and high concentrations of safflower polysaccharide (20, 40, 80 μmol/L), the apoptosis of SMMC-7721 cells
          was increased compared with the control group, and cell migration rates at 24 and 48 h (except for safflower polysaccharide low-
          dose group at 24 h) and clone formation rate at 24 h were significantly decreased compared with the control group (P<0.05 or P<
          0.01).  Compared  with  the  control  group,  cell  number  in  safflower  polysaccharide  groups  was  significantly  decreased,  and
          autophagy levels were improved to some extent; the relative expressions of cleaved caspase-3, caspase-9, Bax and beclin-1 protein
                                                              and  ratio  of  LC3 Ⅱ/LC3 Ⅰ  were  significantly  increased,  and
              Δ 基金项目 国家自然科学基金资助项目(No.82074271);黑龙江
                                                              the  relative  protein  expressions  of  Bcl-2,  p62,  PI3K,  mTOR
          省 省 属 本 科 高 校 中 央 支 持 地 方 高 校 改 革 发 展 资 金 项 目(No.
                                                              and  Akt  were  significantly  decreased (P<0.05  or  P<0.01).
          2020YQ05)
                                                              CONCLUSIONS  Safflower  polysaccharide  could  effectively
             *第一作者 硕士研究生。研究方向:天然多糖作为基因载体的可
          行性研究。E-mail:447405678@qq.com                        inhibit  the  proliferation  and  induce  apoptosis  and  autophagy  of
              # 通信作者 教授,硕士生导师,博士。研究方向:新药与新剂型的                 human  hepatocellular  carcinoma  SMMC-7721  cells, the
          开发。E-mail:wrdx@sina.com                             mechanism  of  which  may  be  related  to  the  inhibition  of  PI3K/


          · 2962 ·    China Pharmacy  2022 Vol. 33  No. 24                            中国药房  2022年第33卷第24期
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