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甲基莲心碱对帕金森病细胞线粒体自噬的影响
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陈翠青 ,谭臣臣 ,王电翠 ,蒋 敏 (1. 康复大学青岛中心医院/青岛市中心医院神经内科,山东 青岛
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266042;2.康复大学青岛中心医院/青岛市中心医院血液科,山东 青岛 266042;3.青岛市第六人民医院神经
内科,山东 青岛 266000)
中图分类号 R965;R742.5 文献标志码 A 文章编号 1001-0408(2025)02-0197-06
DOI 10.6039/j.issn.1001-0408.2025.02.11
摘 要 目的 探究甲基莲心碱(NEF)调节腺苷一磷酸活化的蛋白激酶(AMPK)/哺乳动物雷帕霉素靶蛋白(mTOR)/UNC-51 样
激酶1(ULK1)信号通路对帕金森病(PD)细胞线粒体自噬的影响,从而探讨该药改善PD的作用机制。方法 用100 μmol/L的1-甲
基-4-苯基吡啶离子(MPP)处理SH-SY5Y细胞24 h以构建PD细胞模型,将PD模型细胞分为模型组(PD组)和NEF低、中、高浓度
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处理组(NEF-L、NEF-M、NEF-H组,2.5、5.0、10.0 μmol/L)以及NEF高浓度+AMPK抑制剂组(NEF-H+Compound C组,10.0 μmol/L
NEF和50 μmol/L Compound C);另取未经MPP 、NEF处理的细胞作为对照组。观察各组细胞的超微形态,检测其自噬体数量、存
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活率、凋亡率、线粒体膜电位的变化情况,胱天蛋白酶3(Caspase-3)、微管相关蛋白1轻链3(LC3)、Beclin-1蛋白的表达水平,以及
mTOR、AMPK、ULK1蛋白的磷酸化水平。结果 与PD组比较,NEF-L、NEF-M、NEF-H组细胞自噬体明显增多,膜电位有所升高,
存活率、LC3-Ⅱ/LC3-Ⅰ、Beclin-1蛋白的表达和AMPK、ULK1蛋白的磷酸化水平均显著升高或上调,凋亡率和Caspase-3、p62蛋
白的表达及mTOR蛋白的磷酸化水平均显著降低或下调,且上述改善作用均呈浓度依赖性(P<0.05);Compound C能显著逆转高
浓度NEF的上述改善作用(P<0.05)。结论 NEF通过上调AMPK、ULK1蛋白的磷酸化水平,下调mTOR蛋白的磷酸化水平来促
进PD模型细胞的线粒体自噬,抑制细胞凋亡,从而发挥神经细胞保护作用。
关键词 甲基莲心碱;帕金森病;线粒体自噬;AMPK/mTOR/ULK1信号通路
Effect of neferine on mitophagy in Parkinson’s disease cells
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CHEN Cuiqing ,TAN Chenchen ,WANG Diancui ,JIANG Min (1. Dept. of Neurology, Qingdao Central
Hospital, Rehabilitation University/Qingdao Central Hospital, Shandong Qingdao 266042, China;2. Dept. of
Hematology, Qingdao Central Hospital, Rehabilitation University/Qingdao Central Hospital, Shandong Qingdao
266042, China;3. Dept. of Neurology, the Sixth People’s Hospital of Qingdao, Shandong Qingdao 266000,
China)
ABSTRACT OBJECTIVE To investigate the effect of neferine (NEF) on mitophagy in Parkinson’s disease (PD) cells by
regulating the adenosine monophosphate-activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR)/UNC-51-like
kinase 1 (ULK1) signaling pathway, and explore the mechanism of this drug to improve PD. METHODS SH-SY5Y cells were
treated with 100 μmol/L 1-methyl-4-phenylpyridinium ion (MPP ) for 24 h to construct a PD cell model. PD model cells were
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divided into model group (PD group), NEF low-, medium- and high-concentration groups (NEF-L, NEF-M, NEF-H group, 2.5,
5.0, 10.0 μmol/L), and high concentration of NEF+AMPK inhibitor group (NEF-H+Compound C group, 10.0 μmol/L NEF+50
μmol/L Compound C). The cells treated without MPP and NEF were used as the control group. The ultrastructure of the cells in
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each group was observed; the amount of autophagosomes, survival rate, apoptosis rate, mitochondrial membrane potential, and
the protein expressions of Caspase-3, microtubule-associated protein 1 light chain 3 (LC3) and Beclin-1, as well as the
phosphorylation levels of mTOR, AMPK and ULK1 were detected. RESULTS Compared with PD group, the amount of
autophagosomes in NEF-L, NEF-M and NEF-H groups was increased, and membrane potential was increased; survival rate, LC3-
Ⅱ/LC3-Ⅰ, protein expression of Beclin-1, and protein phosphorylation levels of AMPK and ULK1 were significantly increased or
up-regulated; the apoptotic rate, protein expressions of Caspase-3 and p62, and protein phosphorylation level of mTOR were
significantly decreased or down-regulated, and the above improvements were in a dose-dependent manner (P<0.05). Compound C
could significantly reverse the above improvement effect of high concentration of NEF (P<0.05). CONCLUSIONS NEF can
promote mitophagy and inhibit apoptosis of PD model cells by up-regulating protein phosphorylation levels of AMPK and ULK1,
and down-regulating protein phosphorylation level of mTOR,
Δ 基金项目 青岛市医药卫生科研指导项目(No.2022-WJZD056)
thus playing a protective role in nerve cells.
*第一作者 主治医师。研究方向:神经内科。E-mail:oewms6@ KEYWORDS
163.com neferine; Parkinson’s disease; mitophagy;
AMPK/mTOR/ULK1 signaling pathway
# 通信作者 主治医师。研究方向:神经内科。E-mail:f48kwf@
163.com
中国药房 2025年第36卷第2期 China Pharmacy 2025 Vol. 36 No. 2 · 197 ·