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桃红四物汤改善紫杉醇导致的大鼠外周神经损伤的机制研究
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          韩 滨 ,郝晨伟,董 敏,李正翔(天津医科大学总医院药剂科,天津 300052)
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          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2023)14-1707-05
          DOI  10.6039/j.issn.1001-0408.2023.14.09


          摘  要  目的  探索桃红四物汤(THD)改善紫杉醇(PTX)导致的大鼠外周神经损伤的作用机制。方法  考察THD(1 g/mL含药血
          清)、PTX(0.1 μmol/L)单用和联用下对施万细胞系RSC96细胞增殖率以及自噬溶酶体关联膜蛋白2(LAMP2)、自噬标记蛋白酵母
          Atg6同源物(Beclin1)、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)表达的影响,并与自噬促
          进剂雷帕霉素和自噬抑制剂3-甲基腺嘌呤(3-MA)进行比较。考察THD高、低剂量对PTX导致的外周神经损伤模型大鼠坐骨神
          经中髓鞘碱性蛋白质(MBP)、鞘磷脂蛋白(MPZ)、S100 钙结合蛋白(S100)、LAMP2、Beclin1、PI3K、Akt、mTOR 表达的影响。结
          果  THD+PTX作用下RSC96细胞增殖率显著高于PTX单用;THD+PTX、THD+3-MA作用下RSC96细胞中LAMP2、Beclin1蛋白
          的表达显著高于PTX、3-MA单用,PI3K、Akt、mTOR蛋白的表达显著低于PTX、3-MA单用(P<0.05)。与模型组相比,THD高、低
          剂量组大鼠坐骨神经中 MBP、MPZ、S100、LAMP2、Beclin1 蛋白表达均显著升高,PI3K、Akt、mTOR 蛋白表达均显著降低(P<
          0.05)。结论  THD可能通过抑制PI3K/Akt/mTOR信号通路来激活施万细胞自噬,从而改善PTX导致的外周神经损伤。
          关键词  桃红四物汤;紫杉醇;外周神经损伤;自噬;大鼠;施万细胞

          Study  on  the  mechanism  of  Taohong  siwu  decoction  improving  peripheral  nerve  injury  induced  by
          paclitaxel in rats
          HAN Bin,HAO Chenwei,DONG Min,LI Zhengxiang(Dept. of Pharmacy, General Hospital of Tianjin Medical
          University, Tianjin 300052, China)


          ABSTRACT   OBJECTIVE  To  explore  the  mechanism  of  Taohong  siwu  decoction (THD)  improving  peripheral  nerve  injury
          induced  by  paclitaxel (PTX)  in  rats.  METHODS  The  effects  of  THD (1  g/mL  drug-containing  serum)  and  PTX (0.1  μmol/L)
          alone  or  in  combination  on  the  proliferation  rate  of  Schwann  cells  line  RSC96  as  well  as  the  expressions  of  lysosomal-associated
          membrane protein-2 (LAMP2), autophagy marker protein yeast Atg 6 homolog (Beclin1), phosphatidylinositol 3-kinase (PI3K),
          protein  kinase  B (Akt),  and  mammalian  target  of  rapamycin (mTOR)  were  investigated,  and  then  compared  with  autophagy
          promoter  rapamycin  and  autophagy  inhibitor  3-methyladenine (3-MA).  The  effects  of  high-dose  and  low-dose  THD  on  the
          expressions  of  myelin  basic  protein (MBP)  and  myelin  protein  zero (MPZ),  S100  calcium-binding  protein (S100),  LAMP2,
          Beclin1,  PI3K,  Akt  and  mTOR  were  tested  at  the  end  of  the  experiment.  RESULTS  After  treatment  of  THD+PTX,  the
          proliferation rate of RSC96 cells was significantly higher than those treated with PTX alone. After treatment of THD+PTX or THD+
          3-MA, the protein expressions of LAMP2 and Beclin1 in RSC96 cells were significantly higher than those treated with PTX or 3-
          MA  alone,  while  the  protein  expressions  of  PI3K, Akt  and  mTOR  were  significantly  lower  than  those  treated  with  PTX  or  3-MA
          alone (P<0.05). Compared with model group, the protein expressions of MBP, MPZ, S100, LAMP2 and Beclin1 in sciatic nerve
          of rats were increased significantly in THD high-dose and low-dose groups, while the protein expressions of PI3K, Akt and mTOR
          were  significantly  decreased (P<0.05).  CONCLUSIONS  THD  may  activate  Schwann  cell  autophagy  by  inhibiting  the  PI3K/Akt/
          mTOR signaling pathway, thereby improving peripheral nerve injury caused by PTX.
          KEYWORDS    Taohong siwu decoction; paclitaxel; peripheral nerve injury; autophagy; rat; Schwann cells


              紫杉醇(paclitaxel,PTX)在临床广泛应用于乳腺癌、                存质量,甚至可能迫使患者化疗提前中止,降低其预后
          卵巢癌和肺癌等常见癌症的治疗              [1―2] ,疗效显著,但PTX       效果。有研究证实,PTX损伤的外周神经会出现沃勒变
                                    [3]
          导致的外周神经损伤发病率高 ,严重降低了患者的生                           性,导致轴突的崩溃和瓦解,产生大量的髓鞘碎片、细胞
                                                             器和细胞碎片堆积于病变部位,影响外周神经的修
             Δ 基金项目 天津市卫生健康委员会天津市中医药管理局中医中                   复 [4―5] 。有效清除髓鞘和轴突碎片对于促进轴突再生至
          西医结合科研课题(No.2019135)                               关重要,是改善外周神经损伤的基础和关键 。施万细
                                                                                                   [6]
             * 第一作者 主 管 药 师 ,硕 士 。 研 究 方 向 :药 理 学 。 E-mail:
                                                             胞(Schwann cells,SC)是正常机体外周神经系统损伤修
          hanbintj@163.com
             # 通信作者 主任药师。研究方向:药理学。E-mail:lee41@sina.         复的核心细胞,外周神经部位损伤产生的髓鞘碎片主要
                                                                                    [7]
          com                                                是由SC通过自噬来清除的 。

          中国药房  2023年第34卷第14期                                              China Pharmacy  2023 Vol. 34  No. 14    · 1707 ·
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