半夏提取物通过AMPK/FOXO3a信号通路对哮喘大鼠气道平滑肌细胞增殖、凋亡的影响  

Effects of extract of pinellia on proliferation and apoptosis of airway smooth muscle cells in asthmatic rats through AMPK/FOXO3a signaling pathway

作　　者：黄丽萍 郭腾飞 张文青 HUANG Liping;GUO Tengfei;ZHANG Wenqing(Dongguan Polytechnic,School of Health,Dongguan 523000,China)

机构地区：[1]东莞职业技术学院卫生健康学院,东莞523000 [2]东莞市凤岗医院急诊科,东莞523000 [3]东莞市凤岗医院内一科,东莞523000

出　　处：《中国免疫学杂志》2023年第12期2571-2576,共6页Chinese Journal of Immunology

摘　　要：目的:探讨半夏提取物(EP)对哮喘大鼠气道平滑肌细胞(ASMCs)增殖、凋亡的影响及作用机制。方法:采用卵清蛋白致敏和激发方式构建哮喘大鼠模型,分离并培养大鼠ASMCs,免疫荧光染色鉴定ASMCs中的α-肌动蛋白(α-actin),符合ASMCs特征后将ASMCs分为对照组、模型组、EP组、Compound C组、EP+Compound C组,MTT检测细胞增殖活性;流式细胞术检测细胞凋亡;ELISA检测细胞上清中炎症因子IL-6、TNF-α水平;Western blot检测细胞周期蛋白D1(CyclinD1)、增殖细胞核抗原(PCNA)、Bcl-2相关X蛋白(Bax)、Caspase-3、Cleaved-Caspase-3、腺苷酸活化蛋白激酶(AMPK)、p-AMPK、叉头框蛋白O3a(FOXO3a)、p-FOXO3a蛋白表达。结果:免疫荧光染色显示98%细胞的细胞质中呈现绿色荧光的肌丝,α-actin呈阳性表达,证明培养的细胞为ASMCs。与对照组比较,模型组细胞OD490、CyclinD1、PCNA蛋白表达及上清中IL-6、TNF-α水平显著升高,细胞凋亡率、Bax、Caspase-3、Cleaved-Caspase-3蛋白表达及p-AMPK/AMPK、p-FOXO3a/FOXO3a水平显著降低(P<0.05);与模型组比较,EP组细胞OD490、CyclinD1、PCNA蛋白表达及上清中IL-6、TNF-α水平显著降低,细胞凋亡率、Bax、Caspase-3、Cleaved-Caspase-3蛋白表达及p-AMPK/AMPK、p-FOXO3a/FOXO3a水平显著升高(P<0.05),而Compound C组上述对应指标呈相反趋势(P<0.05);与EP组比较,EP+Compound C组细胞OD490、CyclinD1、PCNA蛋白表达及上清中IL-6、TNF-α水平显著升高,细胞凋亡率、Bax、Caspase-3、Cleaved-Caspase-3蛋白表达及p-AMPK/AMPK、p-FOXO3a/FOXO3a水平显著降低(P<0.05)。结论:EP可能通过激活AMPK/FOXO3a通路抑制哮喘大鼠ASMCs增殖,促进细胞凋亡。Objective:To investigate effects of extract of pinellia(EP)on proliferation and apoptosis of airway smooth muscle cells(ASMCs)in asthmatic rats and its mechanism.Methods:Asthma rat model was constructed by sensitization and challenge with ovalbumin and rat ASMCs were isolated and cultured.Immunofluorescence staining was used to identifyα-actin in ASMCs.After iden⁃tifying as meeting characteristics of ASMCs,ASMCs were divided into control group,model group,EP group,Compound C group and EP+Compound C group.MTT was used to detect cell proliferation activity;flow cytometry was used to detect cell apoptosis;ELISA was used to detect levels of inflammatory factors IL-6 and TNF-αin cell supernatant;Western blot was used to detect expressions of CyclinD1,proliferating cell nuclear antigen(PCNA),Bcl-2 associated X protein(Bax),Caspase-3,Cleaved-Caspase-3,adenylate activated protein kinase(AMPK),p-AMPK,forkhead box protein O3a(FOXO3a),p-FOXO3a proteins.Results:Immunofluores⁃cence staining showed that 98%of cells showed green fluorescent filaments in cytoplasm,andα-actin was positively expressed,which proved that cultured cells were ASMCs.Compared with control group,cell OD490,CyclinD1,PCNA protein expressions and IL-6 and TNF-αlevels in supernatant of model group were significantly increased,apoptosis rate,Bax,Caspase-3,Cleaved-Caspase-3 protein expressions and p-AMPK/AMPK,p-FOXO3a/FOXO3a levels were significantly reduced(P<0.05);compared with model group,cell OD490,CyclinD1,PCNA protein expressions and IL-6,TNF-αlevels in supernatant of EP group were significantly reduced,apoptosis rate,Bax,Caspase-3,Cleaved-Caspase-3 protein expressions,and p-AMPK/AMPK,p-FOXO3a/FOXO3a levels were significantly increased(P<0.05),the above corresponding indicators of Compound C group showed opposite trend(P<0.05);compared with EP group,cell OD490,CyclinD1,PCNA protein expressions and IL-6,TNF-αlevels in supernatant of EP+Compound C group were signifi⁃cantly increased,apoptosis rate,Bax,Caspase-3,Cleaved-Caspase-3 protein express

关 键 词：半夏提取物 哮喘 气道平滑肌细胞 细胞增殖 凋亡 腺苷酸活化蛋白激酶/叉头框蛋白O3a通路 

分 类 号：R562.2[医药卫生—呼吸系统]