中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (3): 464-469.doi: 10.3969/j.issn.2095-4344.0598

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

白藜芦醇修复内皮细胞氧化损伤抑制促血栓分子表达的作用和机制

何  卫,娄振凯,王  兵,李兴国,赵冲宇,赵学凌   

  1. (昆明医科大学第一附属医院骨科,云南省昆明市   650032)
  • 基金资助:

    国家自然科学基金项目(81160236),项目负责人:王兵;国家自然科学基金项目(81760029),项目负责人:王兵;国家自然科学基金项目(81760030);云南省卫生科技计划项目(2016NS021,2017NS021,2017NS022);昆明医科大学第一附属医院博士科研基金项目(2017BS030)

Resveratrol protects endothelial cells from oxidative damage and inhibits expression of pro-thrombosis molecules: the underlying mechanisms

He Wei, Lou Zhenkai, Wang Bing, Li Xingguo, Zhao Chongyu, Zhao Xueling   

  1.  (Department of Orthopedics, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan Province, China)
  • Supported by:

    the National Natural Science Foundation of China, No. 81160236 (to WB), 81760029 (to WB) and 81760030; the Science and Technology Program of Yunnan Province, No. 2016NS021, 2017NS021 and 2017NS022; the Doctoral Research Foundation of the First Affiliated Hospital of Kunming Medical University, No. 2017BS030

摘要:

文章快速阅读:

文题释义:
氧化应激:机体在遭受各种有害刺激时,体内高活性分子如活性氧自由基(reactive oxygen species,ROS)和活性氮自由基(reactive nitrogen species,RNS)产生过多,氧化系统和抗氧化系统失衡,导致组织损伤。被认为是导致衰老和疾病的一个重要因素。
PI3-K/Akt/GSK3β信号通路:磷脂酰肌醇3-激酶/蛋白激酶B(PI3-K/Akt)通路首先在肿瘤细胞中被发现,该通路通过调控下游的多种效应分子对葡萄糖转运、细胞增殖、分化和凋亡等过程起重要调节作用,其中糖原合成酶激酶3B(GSK3B)是主要效应分子,两者联合被称为PI3-K/Akt/GSK3β信号通路。
摘要
背景
:相关研究表明,白藜芦醇具有抗氧化、抑制动脉血栓的作用。
目的:探讨白藜芦醇保护内皮细胞氧化损伤,抑制深静脉血栓形成的分子作用。
方法:使用人脐静脉内皮细胞进行传代培养;实验分3组:①对照组为正常培养液中培养24 h;②H2O2组在培养液中加入200 μmol/L H2O2培养24 h;③H2O2+白藜芦醇组:先分别予以10,20,30 μmol/L的白藜芦醇预处理2 h,再加入200 μmol/L H2O2培养24 h。采用MTT法检测细胞活力;Hoechst 33258染色法、荧光显微镜观察细胞凋亡;Western blot检测P-选择素、P-选择素糖蛋白配体1、血管性血友病因子及PI3-K/Akt/GSK3β、NF-κB信号通路关键蛋白表达。
结果与结论:①与对照组相比,H2O2能够诱导内皮细胞损伤,白藜芦醇对H2O2诱导的内皮细胞损伤具有修复作用(P < 0.05);②与对照组相比,H2O2组细胞凋亡率明显增加(P < 0.05);与H2O2组相比,H2O2+白藜芦醇组细胞凋亡率明显减少(P < 0.05);③与对照组相比,H2O2组P-选择素、P-选择素糖蛋白配体1、血管性血友病因子、NF-κB和GSK3β蛋白的表达显著上调(P < 0.05),Akt总蛋白无明显变化(P > 0.05),pAkt蛋白表达下调(P < 0.05);与H2O2组相比,H2O2+白藜芦醇组上述蛋白表达被逆转(P < 0.05);④结果表明,白藜芦醇能够修复静脉内皮细胞氧化损伤,对P-选择素、P-选择素糖蛋白配体1、血管性血友病因子蛋白表达具有抑制作用,其机制可能与PI3-K/Akt/GSK3β、NF-κB信号通路相关。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0002-2603-4167(何卫)

关键词: 白藜芦醇, 内皮细胞, 氧化应激, 国家自然科学基金, 组织构建

Abstract:

BACKGROUND: Resveratrol has been shown to hold anti-oxidant and anti-arterial thrombosis effects.
OBJECTIVE: To explore the mechanism of resveratrol in repairing endothelial cell injury and inhibiting deep vein thrombosis at molecular level.
METHODS: Human umbilical vein endothelial cells were isolated and cultured. The cells were divided into three groups: control group (common medium), H2O2 group (cultured with 200 μmol/L H2O2 for 24 hours), and resveratrol plus resveratrol group (pretreated with 10, 20 and 30 μmol/L resveratrol for 2 hours, and then cultured with 200 μmol/L H2O2 for 24 hours). The cell viability was evaluated by MTT assay. The apoptotic cells were observed by Hoechst 33258 staining and fluorescence microscopy. The protein expression levels of P-selectin, P-selectin glycoprotein ligand-1, von Willebrand Factor and PI3-K/Akt/GSK3β and NF-κB signaling pathways were tested by western blot assay.
RESULTS AND CONCLUTION: Compared with the control group, H2O2 could induce endothelial cell injury and resveratrol could repair endothelial cells injured by H2O2 (P < 0.05). The apoptotic rate in the H2O2 group was significantly higher than that in the control group (P < 0.05). Compared with the H2O2 group, the apoptosis rate in the H2O2 plus resveratrol group was significantly decreased (P < 0.05). Compared with the control group, the expression levels of P-selectin, P-selectin glycoprotein ligand-1, von Willebrand Factor, NF-κB and GSK3β in the H2O2 group were significantly increased (P < 0.05), the expression of Akt protein showed no significant change (P > 0.05), and the expression level of p-Akt protein was significantly down-regulated (P < 0.05). Meanwhile, resveratrol could reverse all above protein expression (P < 0.05). To conclude, resveratrol can repair human umbilical vein endothelial cells and inhibit the expression of P-selectin, P-selectin glycoprotein ligand-1 and von Willebrand Factor proteins, which may be related to PI3-K/Akt/GSK3β and NF-κB signaling pathways.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Veratrum, Endothelial Cells, Oxidative Stress, Venous Thrombosis, Tissue Engineering

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