制造最好的、富有新意的吉他一直是“Brian Moore Guitars”公司的宗旨。 “Brian Moore Guitars”公司成立于1992年。在1994年,公司推出了木质贴面、琴颈通体的吉他——M C/1。它是由前Steinberger的雇员---BrianMoore和公司总裁Patric...制造最好的、富有新意的吉他一直是“Brian Moore Guitars”公司的宗旨。 “Brian Moore Guitars”公司成立于1992年。在1994年,公司推出了木质贴面、琴颈通体的吉他——M C/1。它是由前Steinberger的雇员---BrianMoore和公司总裁Patrick Cummings(曾在Gibson公司任职)共同设计完成的。现今,公司已经发展壮大,Brian Moore开始做全木质的琴,而且在海外设厂。展开更多
目的应用热休克蛋白90(Hsp90)过表达系统探讨Hsp90是否抑制肿瘤坏死因子α(TNFα)诱导的细胞凋亡及线粒体细胞色素c的释放。方法采用电穿孔技术建立稳定过表达Hsp90的细胞克隆,应用激光共聚焦显微镜和流式细胞仪观察TNFα和放线菌酮(CHX...目的应用热休克蛋白90(Hsp90)过表达系统探讨Hsp90是否抑制肿瘤坏死因子α(TNFα)诱导的细胞凋亡及线粒体细胞色素c的释放。方法采用电穿孔技术建立稳定过表达Hsp90的细胞克隆,应用激光共聚焦显微镜和流式细胞仪观察TNFα和放线菌酮(CHX)诱导的细胞凋亡。应用W estern b lotting方法检测细胞色素c的变化。结果相差显微镜观察Hsp90过表达细胞与对照细胞相比悬浮细胞较少(分别为18%和41%),PBS冲洗后剩余黏附细胞较多。应用共聚焦显微镜进行TUNEL测定结果显示大部分对照细胞发生凋亡,相对较少的Hsp90细胞发生凋亡。W estern b lotting检测Hsp90细胞中细胞色素c的表达与对照组相比明显减少。结论Hsp90过表达抑制TNFα诱导的细胞凋亡及线粒体细胞色素c释放,提示其在凋亡信号传导通路线粒体水平发挥抑制作用。展开更多
AIM: To address the effect of heat-shock protein 90(HSP90) inhibitors on the release of the hepatitis C virus(HCV), a cell culture-derived HCV(JFH1/HCVcc) from Huh-7 cells was examined.METHODS: We quantified both the ...AIM: To address the effect of heat-shock protein 90(HSP90) inhibitors on the release of the hepatitis C virus(HCV), a cell culture-derived HCV(JFH1/HCVcc) from Huh-7 cells was examined.METHODS: We quantified both the intracellular and extracellular(culture medium) levels of the components(RNA and core) of JFH-1/HCVcc. The intracellular HCV RNA and core levels were determined after the JFH1/HCVcc-infected Huh-7 cells were treated with radicicol for 36 h. The extracellular HCV RNA and core protein levels were determined from the medium of the last 24 h of radicicol treatment. To determine the possible role of the HSP90 inhibitor in HCV release, we examined the effect of a combined application of low doses of the HSP90 inhibitor radicicol and the RNA replication inhibitors cyclosporin A(Cs A) or interferon. Finally, we statistically examined the combined effect of radicicoland Cs A using the combination index(CI) and graphical representation proposed by Chou and Talalay.RESULTS: We found that the HSP90 inhibitors had greater inhibitory effects on the HCV RNA and core protein levels measured in the medium than inside the cells. This inhibitory effect was observed in the presence of a low level of a known RNA replication inhibitor(Cs A or interferon-α). Treating the cells with a combination of radicicol and cyclosporin A for 24 h resulted in significant synergy(CI < 1) that affected the release of both the viral RNA and the core protein. CONCLUSION: In addition to having an inhibitory effect on RNA replication, HSP90 inhibitors may interfere with an HCV replication step that occurs after the synthesis of viral RNA, such as assembly and release.展开更多
文摘制造最好的、富有新意的吉他一直是“Brian Moore Guitars”公司的宗旨。 “Brian Moore Guitars”公司成立于1992年。在1994年,公司推出了木质贴面、琴颈通体的吉他——M C/1。它是由前Steinberger的雇员---BrianMoore和公司总裁Patrick Cummings(曾在Gibson公司任职)共同设计完成的。现今,公司已经发展壮大,Brian Moore开始做全木质的琴,而且在海外设厂。
文摘目的应用热休克蛋白90(Hsp90)过表达系统探讨Hsp90是否抑制肿瘤坏死因子α(TNFα)诱导的细胞凋亡及线粒体细胞色素c的释放。方法采用电穿孔技术建立稳定过表达Hsp90的细胞克隆,应用激光共聚焦显微镜和流式细胞仪观察TNFα和放线菌酮(CHX)诱导的细胞凋亡。应用W estern b lotting方法检测细胞色素c的变化。结果相差显微镜观察Hsp90过表达细胞与对照细胞相比悬浮细胞较少(分别为18%和41%),PBS冲洗后剩余黏附细胞较多。应用共聚焦显微镜进行TUNEL测定结果显示大部分对照细胞发生凋亡,相对较少的Hsp90细胞发生凋亡。W estern b lotting检测Hsp90细胞中细胞色素c的表达与对照组相比明显减少。结论Hsp90过表达抑制TNFα诱导的细胞凋亡及线粒体细胞色素c释放,提示其在凋亡信号传导通路线粒体水平发挥抑制作用。
文摘AIM: To address the effect of heat-shock protein 90(HSP90) inhibitors on the release of the hepatitis C virus(HCV), a cell culture-derived HCV(JFH1/HCVcc) from Huh-7 cells was examined.METHODS: We quantified both the intracellular and extracellular(culture medium) levels of the components(RNA and core) of JFH-1/HCVcc. The intracellular HCV RNA and core levels were determined after the JFH1/HCVcc-infected Huh-7 cells were treated with radicicol for 36 h. The extracellular HCV RNA and core protein levels were determined from the medium of the last 24 h of radicicol treatment. To determine the possible role of the HSP90 inhibitor in HCV release, we examined the effect of a combined application of low doses of the HSP90 inhibitor radicicol and the RNA replication inhibitors cyclosporin A(Cs A) or interferon. Finally, we statistically examined the combined effect of radicicoland Cs A using the combination index(CI) and graphical representation proposed by Chou and Talalay.RESULTS: We found that the HSP90 inhibitors had greater inhibitory effects on the HCV RNA and core protein levels measured in the medium than inside the cells. This inhibitory effect was observed in the presence of a low level of a known RNA replication inhibitor(Cs A or interferon-α). Treating the cells with a combination of radicicol and cyclosporin A for 24 h resulted in significant synergy(CI < 1) that affected the release of both the viral RNA and the core protein. CONCLUSION: In addition to having an inhibitory effect on RNA replication, HSP90 inhibitors may interfere with an HCV replication step that occurs after the synthesis of viral RNA, such as assembly and release.
