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1、紧密连接蛋白occludin和ZO1在豚鼠耳蜗外侧壁血管纹中的表达论文【摘要】目的:研究紧密连接蛋白occludin,ZO1在豚鼠耳蜗外侧壁血管纹中的表达.方法:成年健康杂色豚鼠,耳廓反射灵敏,分别取耳蜗、脑、肺三组组织,免疫组织化学法及ini,EDTAfree药片(RocheDiagnostics,德国),冰上充分匀浆,12000g,4℃,离心5min,收集上清.考马斯亮蓝检测三组蛋白的含量.按照每泳道5μg加载于SDSPAGE凝胶电泳孔中,以恒压120V/40mA电泳至溴酚蓝到达凝胶底
2、边.恒流300mA转印于NC膜上.丽春红染色,TBST缓冲液配置的50g/L脱脂奶粉室温下封闭2h.三组分别加入兔抗豚鼠ZO1一抗(1μg/mL),兔抗豚鼠occludin一抗(2mg/L,ZymedLaboratories,美国)及兔抗actin(SantaCruz,.freelin,TBS缓冲液洗膜1次,10min,加入HRP标记的二抗(北京中衫,1∶5000),37℃孵育1h,洗膜3次,每次10min.ECL化学发光系统(pierce)检测occludin,ZO1及βactin的蛋白表
3、达水平.分析阳性条带的分子量大小,用TANON高清晰度计算机图像分析系统进行灰度扫描分析,根据信号的强弱分析蛋白的表达量.以目的条带与βactin内参条带灰度的比值代表蛋白质表达水平.统计学处理:数据均用x±s表示,采用SPSS13.0统计软件,应用Oneeabilitybarriersofinnerear.Finestructureandfunction[J].FortschrMed,1980,98(9):330-336.[2]FuruseM,FujitaK,HiiragiT,etal.Cl
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7、atightjunctionassociatedguaninenucleotideexchangefactorthatactivatesRhoandregulatesparacellularpermeability[J].JCellBiol,2003,160:729-740.TAG: