中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (25): 4041-4047.doi: 10.12307/2024.200

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

灵孢多糖对过氧化氢致SH-SY5Y细胞凋亡及线粒体功能障碍的调控

李雁冰1,2,王记委 1,2,刘晓琴2,郭敏芳2,牛晓洁2,孟  涛2,苏  琴1,2,王瀚斌3,杨立志3,马存根1,尉杰忠1,2,4   

  1. 1山西中医药大学神经生物学研究中心/国家中医药管理局益气活血法治疗多发性硬化重点研究室,山西省晋中市   030619;2山西大同大学脑科学研究所,山西省大同市   037009;3山西国润制药有限公司,山西省大同市   038100;4大同市第五人民医院,山西省大同市   037009
  • 收稿日期:2023-08-01 接受日期:2023-09-18 出版日期:2024-09-08 发布日期:2023-11-24
  • 通讯作者: 尉杰忠,博士,教授,博士生导师,山西中医药大学神经生物学研究中心/国家中医药管理局益气活血法治疗多发性硬化重点研究室,山西省晋中市 030619;山西大同大学脑科学研究所,山西省大同市 037009;大同市第五人民医院,山西省大同市 037009 马存根,博士,教授,博士生导师,山西中医药大学神经生物学研究中心/国家中医药管理局益气活血法治疗多发性硬化重点研究室,山西省晋中市 030619
  • 作者简介:李雁冰,女,广东省梅州市人,山西中医药大学在读硕士,主要从事神经退行性疾病的基础和应用研究。 王记委,男,河南省驻马店市人,山西中医药大学在读硕士,主要从事神经退行性疾病的基础和应用研究。
  • 基金资助:
    山西省 2022 年度“四个一批”科技兴医创新计划项目(2022XM33),项目负责人:尉杰忠;山西省基础研究计划青年科学研究项目(20210302124276),项目负责人:刘晓琴;山西大同大学横向项目(2022001),项目负责人:刘晓琴;山西大同大学校级科研项目(2022Q21),项目负责人:刘晓琴;山西省卫生健康委科研项目(2021168),项目负责人:尉杰忠;大同市平台计划项目(2022082),项目负责人:尉杰忠

Regulatory effect of Ganoderma lucidum polysaccharides on H2O2-induced apoptosis and mitochondrial dysfunction in SH-SY5Y cells

Li Yanbing1, 2, Wang Jiwei1, 2, Liu Xiaoqin2, Guo Minfang2, Niu Xiaojie2, Meng Tao2, Su Qin1, 2, Wang Hanbin3, Yang Lizhi3, Ma Cungen1, Yu Jiezhong1, 2, 4   

  1. 1Research Center of Neurobiology/The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Jinzhong 030619, Shanxi Province, China; 2Institute of Brain Science, Shanxi Datong University, Datong 037009, Shanxi Province, China; 3Shanxi Guorun Pharmaceutical Co., Ltd., Datong 038100, Shanxi Province, China; 4Datong Fifth People’s Hospital, Datong 037009, Shanxi Province, China
  • Received:2023-08-01 Accepted:2023-09-18 Online:2024-09-08 Published:2023-11-24
  • Contact: Yu Jiezhong, MD, Professor, Doctoral supervisor, Research Center of Neurobiology/The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Jinzhong 030619, Shanxi Province, China; Institute of Brain Science, Shanxi Datong University, Datong 037009, Shanxi Province, China; Datong Fifth People’s Hospital, Datong 037009, Shanxi Province, China Ma Cungen, MD, Professor, Doctoral supervisor, Research Center of Neurobiology/The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Jinzhong 030619, Shanxi Province, China
  • About author:Li Yanbing, Master candidate, Research Center of Neurobiology/The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Jinzhong 030619, Shanxi Province, China; Institute of Brain Science, Shanxi Datong University, Datong 037009, Shanxi Province, China Wang Jiwei, Master candidate, Research Center of Neurobiology/The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Jinzhong 030619, Shanxi Province, China; Institute of Brain Science, Shanxi Datong University, Datong 037009, Shanxi Province, China
  • Supported by:
    Shanxi Province 2022 “Four Batch One” Science and Technology Innovation Plan Project, No. 2022XM33 (to YJZ); Youth Science Research Project of Shanxi Province Basic Research Program, No. 20210302124276 (to LXQ); Horizontal Project of Shanxi Datong University, No. 2022001 (to LXQ); Shanxi Datong University Campus Level Research Project, No. 2022Q21 (to LXQ); Research Project of Shanxi Provincial Health Commission, No. 2021168 (to YJZ); Datong City Platform Plan Project, No. 2022082 (to YJZ)

摘要:


文题释义:

灵孢多糖:是灵芝孢子粉中的主要活性成分之一,具有调节免疫功能、抗肿瘤、清除自由基、延缓衰老、神经系统保护等多种药理活性,已有研究证实灵孢多糖可通过促进神经再生有效改善阿尔茨海默病小鼠的认知功能及学习能力。

氧化应激:是生物体内活性氧产生与清除之间不平衡导致的一种病理失衡。氧化应激导致活性氧生成过量时,会损伤中枢神经系统的神经元,导致后期线粒体功能障碍,加重阿尔茨海默病。


背景:目前研究证实,灵孢多糖可促进神经退行性相关疾病的神经再生。神经退行性疾病的发生与线粒体功能失调密切相关,但灵孢多糖对神经退行性疾病的细胞凋亡及线粒体功能的调控作用尚不明确。
目的:探索灵孢多糖对过氧化氢诱导的SH-SY5Y细胞凋亡及线粒体功能障碍的调控作用及机制。
方法:SH-SY5Y细胞分为3组:对照组,过氧化氢组,灵孢多糖组。对照组细胞正常培养,过氧化氢组细胞用300 μmol/L过氧化氢处理24 h,灵孢多糖组先用300 μg/μL灵孢多糖干预一两个小时,然后加入300 μmol/L过氧化氢干预24 h,干预结束后用JC-1试剂盒检测线粒体膜电位,TUNEL染色试剂盒检测细胞凋亡情况,丙二醛试剂盒和超氧化物歧化酶试剂盒检测丙二醛和超氧化物歧化酶活性,免疫荧光染色法和Western blot法检测凋亡、线粒体动力学相关蛋白的表达。

结果与结论:①与对照组相比,过氧化氢组线粒体膜电位和超氧化歧化酶活性显著降低,细胞凋亡率、丙二醇水平显著增高,差异均有显著性意义(P < 0.05);与过氧化氢组相比,灵孢多糖组线粒体膜电位和超氧化歧化酶活性显著增高,细胞凋亡率、丙二醛水平显著下降,差异均有显著性意义(P < 0.05);②与对照组相比,过氧化氢组促凋亡蛋白Bax和Caspase-3的表达显著增加,抗凋亡蛋白Bcl-2的表达显著下降,差异均有显著性意义(P < 0.05);与过氧化氢组相比,灵孢多糖组促凋亡蛋白Bax、Caspase-3的表达显著降低,抗凋亡蛋白Bcl-2的表达显著增加,差异均有显著性意义(P < 0.05);③与对照组相比,过氧化氢组线粒体分裂蛋白Fis1与线粒体动力学蛋白p-Drp1的表达均显著增高,线粒体融合蛋白OPA1、Mfn1、Mfn2的表达均显著降低,差异均有显著性意义(P < 0.05);与过氧化氢组相比,灵孢多糖组线粒体分裂蛋白Fis1与线粒体动力学蛋白p-Drp1的表达显著降低,线粒体融合蛋白OPA1、Mfn1、Mfn2的表达显著增高,差异均有显著性意义(P < 0.05);④以上结果证实,灵孢多糖可通过改善线粒体功能障碍以减轻过氧化氢诱导的SH-SY5Y细胞氧化应激损伤和细胞凋亡。

https://orcid.org/0009-0006-5940-7069 (李雁冰) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 灵孢多糖, SH-SY5Y细胞, 细胞凋亡, 线粒体功能障碍, 氧化应激

Abstract: BACKGROUND: Current studies have confirmed that Ganoderma lucidum polysaccharides can promote nerve regeneration in neurodegeneration-related diseases. The occurrence of neurodegenerative diseases is closely related to mitochondrial dysfunction, but the role of Ganoderma lucidum polysaccharides on the regulation of apoptosis and mitochondrial function in neurodegenerative diseases is not yet clarified. 
OBJECTIVE: To explore the regulatory effects and mechanisms of Ganoderma lucidum polysaccharides on apoptosis and mitochondrial dysfunction in H2O2-induced SH-SY5Y cells.
METHODS: SH-SY5Y cells were divided into three groups: control group, H2O2 group, and Ganoderma lucidum polysaccharides group. Cells in the control group were normally cultured. Cells in the H2O2 group were treated with 300 μmol/L H2O2 for 24 hours. In the Ganoderma lucidum polysaccharides group, the intervention with 300 μg/L Ganoderma lucidum polysaccharides was conducted first for 1-2 hours, followed by the addition of 300 μmol/L H2O2 for 24 hours. The mitochondrial membrane potential was detected by JC-1 kit. Apoptosis was detected by TUNEL staining kit. The activities of malondialdehyde and superoxide dismutase were detected by malondialdehyde test kit and superoxide dismutase test kit, respectively. The apoptosis and expression of mitochondrial dynamics-related proteins were detected by immunofluorescence staining and western blot assay.
RESULTS AND CONCLUSION: (1) Compared with the control group, the mitochondrial membrane potential and superoxide dismutase activity were significantly reduced, as well as apoptotic rate and malondialdehyde levels were significantly increased in the H2O2 group (P < 0.05). After treatment with Ganoderma lucidum polysaccharides, the membrane potential and superoxide dismutase activities were significantly increased, and apoptotic rate and malondialdehyde levels were significantly reduced compared with the H2O2 group (P < 0.05). (2) The expression levels of pro-apoptotic proteins Bax and Caspase-3 were significantly increased, but the expression of anti-apoptotic protein Bcl-2 was significantly decreased in the H2O2 group compared with the control group (P < 0.05). Compared with the H2O2 group, the levels of Bax and Caspase-3 were significantly decreased, but the expression of anti-apoptotic protein Bcl-2 was significantly increased in the Ganoderma lucidum polysaccharides group (P < 0.05). (3) Compared with the control group, the expression of mitochondrial splitting proteins Fis1 and p-Drp1 was significantly increased, but the expression of mitochondrial fusion proteins OPA1, Mfn1, and Mfn2 was decreased in the H2O2 group (P < 0.05). Compared with the H2O2 group, Fis1 and p-Drp1 expression was significantly reduced, but the expression levels of OPA1, Mfn1, and Mfn2 were significantly increased in the Ganoderma lucidum polysaccharides group (P < 0.05). (4) The above results confirm that Ganoderma lucidum polysaccharides can attenuate H2O2-induced oxidative stress damage and apoptosis in SH-SY5Y cells by ameliorating mitochondrial dysfunction.

Key words: Ganoderma lucidum polysaccharides, SH-SY5Y cell, apoptosis, mitochondrial dysfunction, oxidative stress

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