心痛泰含药血清干预PI3K/Akt/HIF-1α通路抑制兔主动脉平滑肌细胞凋亡的作用机制  

To Explore the Mechanism of Xintongtai Medicated Serum on Inhibiting Apoptosis of Rabbit Aortic Vascular Smooth Muscle Cell by Interfering PI3K/Akt/HIF-1α Signaling Pathway

作　　者：易琼[1,2] 彭清华 郭志华[2] 彭筱平[3] 魏佳明 Yi Qiong;Peng Qinghua;Guo Zhihua;Peng Xiaoping;Wei Jiaming(the First Hospital of Hunan University of Chinese Medicine,Changsha 410007,China;Hunan University of Chinese Medicine,Changsha 410208,China;Hunan Provincial Hospital of Traditional Chinese Medicine,Zhuzhou 412008,China)

机构地区：[1]湖南中医药大学第一附属医院,长沙410007 [2]湖南中医药大学,长沙410208 [3]湖南省直中医医院,株洲412008

出　　处：《世界科学技术-中医药现代化》2023年第6期1998-2011,共14页Modernization of Traditional Chinese Medicine and Materia Medica-World Science and Technology

基　　金：湖南省科学技术厅湖南省自然科学基金面上项目(2021JJ30492):基于NOX/ROS-NF-κB信号通路研究心痛泰调节动脉粥样硬化氧化应激与自噬反应的作用机制,负责人:郭志华;湖南省科学技术厅湖南省自然科学基金青年项目(2021JJ40426):从miR-320-3p调控自噬对VSMC表型转化的影响探讨心痛泰稳定易损斑块的作用机制,负责人:易琼;湖南中医药大学中医学一流学科开放基金一般项目(2021ZYX19):从“心受气于脾”探讨理气活血法调控miR-429抑制VSMC凋亡以稳定动脉易损斑块的作用机制,负责人:易琼。

摘　　要：目的通过生信分析和细胞实验探讨心痛泰含药血清干预PI3K/Akt/HIF-1α对兔主动脉平滑肌细胞(Aortic vascular smooth muscle cell,VSMC)凋亡的作用机制。方法采用ox-LDL诱导实验兔主动脉平滑肌细胞凋亡,构建动脉粥样硬化的细胞模型。采用细胞增殖与活性检测(Cell counting Kit8,CCK8)法筛选心痛泰含药血清最佳作用浓度。在中药药理数据分析平台中收集心痛泰的主要化学成分,通过PubChem数据库收集各活性化合物成分信息,SwissTargetPrediction数据库预测活性化合物相关靶点,通过GeneCards和DisGeNET数据库收集“动脉粥样硬化”、“细胞凋亡”的作用靶点,STRING平台构建蛋白质-蛋白质相互作用(Protein-protein interaction network,PPI)网络,DAVID在线分析GO分析和KEGG分析。VSMC分为空白血清组、模型组、心痛泰含药血清组、磷脂酰肌醇3激酶(Phosphatidylinositol 3 kinase,PI3K)抑制剂(LY294002)组、心痛泰含药血清+LY294002组。分别采用原位末端标记(TdT mediated dUTP Nick End Labeling,TUNEL)法和流式细胞术检测VSMC凋亡,计算凋亡率;聚合酶链式反应(Polymerase chain reaction,PCR)法测定PI3K、丝/苏氨酸蛋白激酶(Phospho-Alpha serine/threonine-protein kinase,Akt)、缺氧诱导因子(Hypoxia-Inducible factor 1-Alpha,HIF-1α)、caspase-3、caspase-9的mRNA表达;蛋白质免疫印迹(Western blot)法测定磷酸化的PI3K(p-PI3K)/PI3K、磷酸化的Akt(p-Akt)/Akt、HIF-1α、cleaved caspase-3、cleaved caspase-9的蛋白表达;细胞免疫荧光法检测VSMC中收缩型特异性标志物α-平滑肌肌动蛋白(α-smooth muscle actin,α-SMA)的荧光定量。结果CCK-8筛选出最佳干预浓度为20%心痛泰中剂量含药血清;TUNEL法和流式细胞术表明,与空白组相比,模型组的VSMC凋亡阳性细胞百分比、早期凋亡率、晚期凋亡率和总凋亡率均明显升高(P<0.01),PI3K、Akt、HIF-1α、caspase-3、caspase-9 mRNA表达明显增加(P<0.01),p-PI3K/PI3K、p-Akt/Akt、HIF-1αObjective Bioinformatics analysis combined with cell experiment to explore the effect of Xintongtai medicated serum on apoptosis of rabbit aortic vascular smooth muscle cells by down-regulating PI3K/Akt/HIF-1α.Methods ox-LDL was used to induce the apoptosis of VSMC so as to establish the atherosclerotic cell model.The CCK8 method was used to select the optimal concentration of Xintongtai medicated serum.The main chemical components of Xintongtai were collected by TCMSP,the information of active compounds was collected by PubChem,the targets of active compounds were predicted by SwissTargetPrediction,the targets of"atherosclerosis"and"apoptosis"were collected by genecards and disgenet,and the protein-protein interaction(PPI)network was constructed by string platform.David online analysis gene ontology(GO)enrichment analysis function and Kyoto Encyclopedia of genes and genomes(KEGG)enrichment analysis.VSMC was divided into blank serum group,model group,Xintongtai medicated serum group and phosphatidylinositol 3 kinase(PI3K)inhibitor(LY294002)group,and Xintongtai medicated serum+LY294002 group.The apoptosis of VSMC was detected by TUNEL and flow cytometry,and the apoptosis rate was calculated.The mRNA expression of PI3K,Akt,HIF-1α,caspase-3,caspase-9 were determined by polymerase chain reaction(PCR).Protein expression of p-PI3K/PI3K,p-Akt/Akt,HIF-1α,cleaved caspase-3,cleaved caspase-9 were determined by Western blot.α-SMA(Contractive VSMC specific marker)Fluorescence quantification of VSMC was determined by cellular immunofluorescence.Results The optimal concentration selected by CCK-8 was 20%middle dose Xintongtai medicated serum.Compared with the blank group,the VSMC early apoptosis rate,late apoptosis rate and total apoptosis rate in model group were increased(P<0.01),the mRNA expression of PI3K,Akt,HIF-1α,caspase-3,caspase-9 of the model group were up-regulated(P<0.01),the protein expression of p-PI3K/PI3K,p-Akt/Akt,HIF-1α,cleaved caspase-3,cleaved caspase-9 of the model group were up-regulated(P<0.01).Com

关 键 词：心痛泰 动脉粥样硬化 生信分析 PI3K/Akt/HIF-1α信号通路 平滑肌细胞凋亡 

分 类 号：R285[医药卫生—中药学]