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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
Δ
*
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 ·