Chinese Journal of Tissue Engineering Research ›› 2022, Vol. 26 ›› Issue (31): 4975-4981.doi: 10.12307/2022.709
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Li Suyao1, 2, Guo Minfang2, Yu Jingwen2, Meng Tao2, Mu Bingtao2, Li Mengdi1, 2, Li Na1, 2, Song Lijuan1, 3, Ma Cungen1, 2, Yu Jiezhong1, 2, 4
Received:
2021-08-24
Accepted:
2021-10-11
Online:
2022-11-08
Published:
2022-04-25
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 Fourth 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; Institute of Brain Science, Shanxi Datong University, Datong 037009, Shanxi Province, China
About author:
Li Suyao, 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
Guo Minfang, Master, Associate professor, Institute of Brain Science, Shanxi Datong University, Datong 037009, Shanxi Province, China
Li Suyao and Guo Minfang contributed equally to this article.
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CLC Number:
Li Suyao, Guo Minfang, Yu Jingwen, Meng Tao, Mu Bingtao, Li Mengdi, Li Na, Song Lijuan, Ma Cungen, Yu Jiezhong. Effect of eriodictyol on the imbalance of mitochondrial dynamics and apoptosis in SH-SY5Y cells induced by hydrogen peroxide[J]. Chinese Journal of Tissue Engineering Research, 2022, 26(31): 4975-4981.
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2.4 圣草酚对过氧化氢诱导的SH-SY5Y细胞线粒体膜电位的影响 JC-1常用于检测线粒体膜电位的变化,JC-1探针的灵敏度使其在线粒体膜电位较高时聚集在线粒体基质中,形成聚合物产生红色荧光;当线粒体膜电位下降时JC-1探针则不能聚集,此时产生绿色荧光;通过荧光颜色的变化可以检测到线粒体膜电位的变化;与PBS对照组相比,过氧化氢组的红/绿荧光强度比值低,差异有显著性意义(P < 0.001),表明线粒体膜电位降低;与过氧化氢组比较,圣草酚治疗组的红/绿荧光强度比值升高,差异有显著性意义(P < 0.001),表明线粒体膜电位恢复正常状态。与PBS对照组比较,圣草酚治疗组红/绿荧光强度比值无明显差异(P > 0.05),见图4,说明圣草酚治疗可以恢复线粒体膜电位,发挥保护作用。"
2.6 圣草酚对过氧化氢诱导的SH-SY5Y细胞凋亡相关蛋白的影响 Western blot结果显示,与PBS对照组相比,过氧化氢组促凋亡蛋白Bax的表达显著增加(P < 0.001),抗凋亡蛋白Bcl-2的表达明显下降(P < 0.001)。与过氧化氢组相比,圣草酚治疗组Bax的表达下调(P < 0.001),Bcl-2的表达增加(P < 0.001),见图6;免疫荧光结果显示,与PBS对照组相比,过氧化氢组Caspase3增高(P < 0.05),而与过氧化氢组相比,圣草酚治疗组Caspase3表达降低(P < 0.05),见图7,说明圣草酚可以抑制促凋亡蛋白的表达水平,增加抗凋亡蛋白的表达水平。"
2.7 圣草酚调控线粒体动力学 免疫荧光结果显示,与PBS对照组比较,过氧化氢组线粒体分裂蛋白p-Drp1和Fis1的表达增加(P < 0.001),而线粒体融合蛋白Mfn2、OPA1的表达降低(P < 0.01)。与过氧化氢组比较,圣草酚治疗组p-Drp1和Fis1的表达降低(P < 0.001),Mfn2、OPA1的表达增加(P < 0.001),见图8。Western blot结果显示,与PBS对照组比较,过氧化氢组线粒体分裂蛋白p-Drp1和Fis1的表达增加(P < 0.01,P < 0.001),而线粒体融合蛋白Mfn2、OPA1的表达降低(P < 0.01)。与过氧化氢组比较,圣草酚治疗组p-Drp1和Fis1的表达下调(P < 0.05,P < 0.001),Mfn2、OPA1的表达增加(P < 0.001),见图9。免疫荧光和Western blot结果说明圣草酚可以抑制线粒体分裂蛋白的表达水平,增加线粒体融合蛋白的表达水平。"
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