AIM： To study the effect of oxymatrine-baicalin combination （OB） against HBV replication in 2.2.15 cells and α smooth muscle actin （ α SMA） expression, type I, collagen synthesis in HSC-T6 cells. METHODS： The ...AIM： To study the effect of oxymatrine-baicalin combination （OB） against HBV replication in 2.2.15 cells and α smooth muscle actin （ α SMA） expression, type I, collagen synthesis in HSC-T6 cells. METHODS： The 2.2.15 cells and HSC-T6 cells were cultured and treated respectively. HBsAg and HBeAg in the culture supernatants were detected by ELISA and HBV DNA levels were determined by fluorescence quantitative PCR. Total RNA was extracted from HSC-T6 cells and reverse transcribed into cDNA. The cDNAs were amplified by PCR and the quantities were expressed in proportion to β actin. The total cellular proteins extracted from HSC-T6 cells were separated by electrophoresis. Resolved proteins were electrophoretically transferred to nitrocellulose membrane. Protein bands were revealed and the quantities were corrected by β actin. RESULTS： In the 2.2.15 cell culture system, the inhibitory rate against secretion of HBsAg and HBeAg in the OB group was significantly stronger than that in the oxymatrine group （HBsAg, P = 0.043; HBeAg, P = 0.026; respectively）; HBV DNA level in the OB group was significantly lower than that in the oxymatrine group （P = 0.041）. In HSC-T6 cells the mRNA and protein expression levels of α SMA in the OB group were significantly lower as compared with those in the oxymatrine group （mRNA, P = 0.013; protein, P = 0.042; respectively）; The mRNA and protein expression levels of type I collagen in the OB group were significantly lower as compared with those in the oxymatrine group （mRNA, P 〈 0.01; protein, P 〈 0.01; respectively）.CONCLUSION： OB combination has a better effect against HBV replication in 2.2.15 cells and is more effective against α SMA expression and type I collagen synthesis in HSC-T6 cells than oxymatrine in vitro.展开更多
目的观察TGF-β1对大鼠肝星状细胞系HSC-T6增殖、细胞周期以及分泌肝纤维化相关胶原的影响。方法采用MTT法检测细胞增殖;使用流式细胞仪检测细胞周期;采用荧光定量RT-PCR法检测SMAD3、c-myc、cdk-2、cyclinE、EGF、HGF、Bcl-2、NF-κB、...目的观察TGF-β1对大鼠肝星状细胞系HSC-T6增殖、细胞周期以及分泌肝纤维化相关胶原的影响。方法采用MTT法检测细胞增殖;使用流式细胞仪检测细胞周期;采用荧光定量RT-PCR法检测SMAD3、c-myc、cdk-2、cyclinE、EGF、HGF、Bcl-2、NF-κB、MMP1、MMP9、MMP14、TIMP-1、PAI-1、α-SMA、COLⅠ及COLⅢ等基因mRNA水平;采用ELISA法检测细胞培养液COLⅠ、COLⅢ和α-SMA含量。结果与对照组比,TGF-β1处理24h及36h时,细胞形态及生长状况均无明显变化;在24h和36h时,TGF-β1处理组细胞G0/G1期细胞比率均减少(24h:57.3±8.5%vs 60.6±9.7%;36h:53.0±2.2%vs 56.6±5.0%),S期细胞比例略高(24h:30.6±7.2%vs26.4±10.1%;36h:35.2±3.7%vs 30.8±2.5%),但差异无统计学意义(P>0.05);TGF-β1处理组SMAD3、c-myc、cdk2、cyclin E、EGF、Bcl-2、NF-κB、TIMP1、PAI-1、α-SMA及COLⅠmRNA在24h和36h表达均上调,HGF、MMP1、MMP9、MMP14及COLⅢmRNA在24h时表达下调,36h时表达上调;TGF-β1处理组HSC-T6细胞分泌COLⅠ[24h:(63.0±7.4ng/ml vs 33.2±10.8 ng/ml,P<0.05;36h:58.5±6.0ng/ml vs 42.2±6.3ng/ml,P<0.05];α-SMA[24h:20.6±2.6ng/ml vs 4.2±0.7ng/ml,P<0.05;36h:59.7±14.6ng/ml vs 36.8±5.6ng/ml,P<0.05)均显著增加。结论 TGF-β1对大鼠肝星状细胞系HSC-T6显示了促增殖作用,并能促进肝纤维化相关胶原的分泌。展开更多
目的构建含有金属蛋白酶组织抑制因子-1(TIMP-1)的重组质粒并以其为模板建立荧光定量聚合酶链反应(PCR)技术检测TIMP-1的标准曲线,为荧光定量PCR准确检测TIMP-1奠定基础.方法提取大鼠星状细胞系HSC-T6的mRNA,经RT-PCR扩增TIMP-1基因后与...目的构建含有金属蛋白酶组织抑制因子-1(TIMP-1)的重组质粒并以其为模板建立荧光定量聚合酶链反应(PCR)技术检测TIMP-1的标准曲线,为荧光定量PCR准确检测TIMP-1奠定基础.方法提取大鼠星状细胞系HSC-T6的mRNA,经RT-PCR扩增TIMP-1基因后与pGMT-Vector 连接,转化到大肠杆菌DH5α,以筛选得到的阳性克隆质粒作为标准品进行梯度稀释,分别用Taqman荧光探针技术和SYBR Green I荧光染料技术进行荧光定量PCR检测,建立标准曲线,并对两者结果进行了对比.同时进行普通PCR检测,与荧光定量PCR方法检测结果进行比较.结果重组质粒经PCR扩增及序列测定,表明pGMT-TIMP-1基因已成功克隆.以不同稀释水平的标准品质粒进行荧光定量PCR扩增, 应用Taqman荧光探针技术建立的标准曲线的线性检测范围为7×104～7×108拷贝,检测灵敏度为7×104拷贝;应用SYBR Green I荧光染料技术的线性检测范围为7×106～7×108拷贝,检测灵敏度为7×106拷贝,且熔解曲线显示出现非特异性扩增;两种技术相对于普通PCR技术均具有定量功能.结论所构建的pGMT-TIMP-1基因荧光定量PCR检测标准品应用Taqman荧光探针技术建立的标准曲线线性关系好, 灵敏度和特异性高,准确可靠,此方法可作为荧光定量PCR检测TIMP-1基因的标准方法.展开更多
文摘AIM： To study the effect of oxymatrine-baicalin combination （OB） against HBV replication in 2.2.15 cells and α smooth muscle actin （ α SMA） expression, type I, collagen synthesis in HSC-T6 cells. METHODS： The 2.2.15 cells and HSC-T6 cells were cultured and treated respectively. HBsAg and HBeAg in the culture supernatants were detected by ELISA and HBV DNA levels were determined by fluorescence quantitative PCR. Total RNA was extracted from HSC-T6 cells and reverse transcribed into cDNA. The cDNAs were amplified by PCR and the quantities were expressed in proportion to β actin. The total cellular proteins extracted from HSC-T6 cells were separated by electrophoresis. Resolved proteins were electrophoretically transferred to nitrocellulose membrane. Protein bands were revealed and the quantities were corrected by β actin. RESULTS： In the 2.2.15 cell culture system, the inhibitory rate against secretion of HBsAg and HBeAg in the OB group was significantly stronger than that in the oxymatrine group （HBsAg, P = 0.043; HBeAg, P = 0.026; respectively）; HBV DNA level in the OB group was significantly lower than that in the oxymatrine group （P = 0.041）. In HSC-T6 cells the mRNA and protein expression levels of α SMA in the OB group were significantly lower as compared with those in the oxymatrine group （mRNA, P = 0.013; protein, P = 0.042; respectively）; The mRNA and protein expression levels of type I collagen in the OB group were significantly lower as compared with those in the oxymatrine group （mRNA, P 〈 0.01; protein, P 〈 0.01; respectively）.CONCLUSION： OB combination has a better effect against HBV replication in 2.2.15 cells and is more effective against α SMA expression and type I collagen synthesis in HSC-T6 cells than oxymatrine in vitro.
文摘目的观察TGF-β1对大鼠肝星状细胞系HSC-T6增殖、细胞周期以及分泌肝纤维化相关胶原的影响。方法采用MTT法检测细胞增殖;使用流式细胞仪检测细胞周期;采用荧光定量RT-PCR法检测SMAD3、c-myc、cdk-2、cyclinE、EGF、HGF、Bcl-2、NF-κB、MMP1、MMP9、MMP14、TIMP-1、PAI-1、α-SMA、COLⅠ及COLⅢ等基因mRNA水平;采用ELISA法检测细胞培养液COLⅠ、COLⅢ和α-SMA含量。结果与对照组比,TGF-β1处理24h及36h时,细胞形态及生长状况均无明显变化;在24h和36h时,TGF-β1处理组细胞G0/G1期细胞比率均减少(24h:57.3±8.5%vs 60.6±9.7%;36h:53.0±2.2%vs 56.6±5.0%),S期细胞比例略高(24h:30.6±7.2%vs26.4±10.1%;36h:35.2±3.7%vs 30.8±2.5%),但差异无统计学意义(P>0.05);TGF-β1处理组SMAD3、c-myc、cdk2、cyclin E、EGF、Bcl-2、NF-κB、TIMP1、PAI-1、α-SMA及COLⅠmRNA在24h和36h表达均上调,HGF、MMP1、MMP9、MMP14及COLⅢmRNA在24h时表达下调,36h时表达上调;TGF-β1处理组HSC-T6细胞分泌COLⅠ[24h:(63.0±7.4ng/ml vs 33.2±10.8 ng/ml,P<0.05;36h:58.5±6.0ng/ml vs 42.2±6.3ng/ml,P<0.05];α-SMA[24h:20.6±2.6ng/ml vs 4.2±0.7ng/ml,P<0.05;36h:59.7±14.6ng/ml vs 36.8±5.6ng/ml,P<0.05)均显著增加。结论 TGF-β1对大鼠肝星状细胞系HSC-T6显示了促增殖作用,并能促进肝纤维化相关胶原的分泌。
文摘目的构建含有金属蛋白酶组织抑制因子-1(TIMP-1)的重组质粒并以其为模板建立荧光定量聚合酶链反应(PCR)技术检测TIMP-1的标准曲线,为荧光定量PCR准确检测TIMP-1奠定基础.方法提取大鼠星状细胞系HSC-T6的mRNA,经RT-PCR扩增TIMP-1基因后与pGMT-Vector 连接,转化到大肠杆菌DH5α,以筛选得到的阳性克隆质粒作为标准品进行梯度稀释,分别用Taqman荧光探针技术和SYBR Green I荧光染料技术进行荧光定量PCR检测,建立标准曲线,并对两者结果进行了对比.同时进行普通PCR检测,与荧光定量PCR方法检测结果进行比较.结果重组质粒经PCR扩增及序列测定,表明pGMT-TIMP-1基因已成功克隆.以不同稀释水平的标准品质粒进行荧光定量PCR扩增, 应用Taqman荧光探针技术建立的标准曲线的线性检测范围为7×104～7×108拷贝,检测灵敏度为7×104拷贝;应用SYBR Green I荧光染料技术的线性检测范围为7×106～7×108拷贝,检测灵敏度为7×106拷贝,且熔解曲线显示出现非特异性扩增;两种技术相对于普通PCR技术均具有定量功能.结论所构建的pGMT-TIMP-1基因荧光定量PCR检测标准品应用Taqman荧光探针技术建立的标准曲线线性关系好, 灵敏度和特异性高,准确可靠,此方法可作为荧光定量PCR检测TIMP-1基因的标准方法.
