The construction of the first infectious clone JFH-1 speeds up the research on hepatitis C virus (HCV). However, Huh7 cell line was the only highly permissive cell line for HCV infection and only a few clones were ful...The construction of the first infectious clone JFH-1 speeds up the research on hepatitis C virus (HCV). However, Huh7 cell line was the only highly permissive cell line for HCV infection and only a few clones were fully permissive. In this study, two different fully permissive clones of Huh7 cells, Huh7.5.1 and Huh7-Lunet-CD81 (Lunet-CD81) cells were compared for their responses upon HCV infection. The virus replication level was found slightly higher in Huh7.5.1 cells than that in Lunet-CD81 cells. Viability of Huh7.5.1 cells but not of Lunet-CD81 cells was reduced significantly after HCV infection. Further analysis showed that the cell cycle of infected Huh7.5.1 cells was arrested at G1 phase. The G1/S transition was blocked by HCV infection in Huh7.5.1 cells as shown by the cell cycle synchronization analysis. Genes related to cell cycle regulation was modified by HCV infection and gene interaction analysis in GeneSpring GX in Direct Interactions mode highlighted 31 genes. In conclusion, the responses of those two cell lines were different upon HCV infection. HCV infection blocked G1/S transition and cell cycle progress, thus reduced the cell viability in Huh7.5.1 cells but not in Lunet-CD81 cells. Lunet-CD81 cells might be suitable for long term infection studies of HCV.展开更多
丙型肝炎病毒(Hepatitis C virus,HCV)是导致人类肝脏疾病的重要病原体。长链非编码RNA(Long noncoding RNA,lncRNA)参与了许多疾病和生物过程的调控,但是lncRNA在HCV感染中的作用还了解很少。本研究旨在筛选HCV感染人肝癌细胞系Huh7.5....丙型肝炎病毒(Hepatitis C virus,HCV)是导致人类肝脏疾病的重要病原体。长链非编码RNA(Long noncoding RNA,lncRNA)参与了许多疾病和生物过程的调控,但是lncRNA在HCV感染中的作用还了解很少。本研究旨在筛选HCV感染人肝癌细胞系Huh7.5.1后差异表达的长链非编码RNA(lncRNA),并研究相关lncRNA对细胞增殖及周期相关基因表达的影响。首先,分析HCV感染Huh7.5.1细胞72h前后lncRNA芯片表达谱;然后采用实时荧光定量PCR(Reverse tanscription-quantitative real time PCR,RT-qPCR)的方法对芯片中差异表达明显的17条lncRNA进行细胞水平验证;进一步采用CCK8以及ki67细胞增殖实验研究差异表达最明显的lncRNA对细胞增殖的影响;最后采用RT-qPCR探讨lncRNA对细胞周期蛋白基因cyclin B1/D1/E1的mRNA表达的影响。lncRNA芯片检测结果与RT-qPCR验证的相符的lncRNA中,发现HCV感染Huh7.5.1细胞后上调和下调最明显的两条lncRNA分别是RP11-288L9.1与ADAM20P1,而沉默RP11-288L9.1能抑制细胞周期蛋白基因cyclin B1/D1/E1的表达水平,并抑制Huh7.5.1细胞增殖。首次发现HCV感染后上调的RP11-288L9.1能促进细胞周期蛋白基因的表达水平和Huh7.5.1细胞增殖,另一种下调的ADAM20P1对细胞增殖影响不大。研究结果为HCV感染及肝癌细胞增殖提供了潜在的诊断标志物和治疗的新型靶点,具有一定的参考价值。展开更多
基金supported partly by grants of National Nature Science Foundation of China (grant 31200135)
文摘The construction of the first infectious clone JFH-1 speeds up the research on hepatitis C virus (HCV). However, Huh7 cell line was the only highly permissive cell line for HCV infection and only a few clones were fully permissive. In this study, two different fully permissive clones of Huh7 cells, Huh7.5.1 and Huh7-Lunet-CD81 (Lunet-CD81) cells were compared for their responses upon HCV infection. The virus replication level was found slightly higher in Huh7.5.1 cells than that in Lunet-CD81 cells. Viability of Huh7.5.1 cells but not of Lunet-CD81 cells was reduced significantly after HCV infection. Further analysis showed that the cell cycle of infected Huh7.5.1 cells was arrested at G1 phase. The G1/S transition was blocked by HCV infection in Huh7.5.1 cells as shown by the cell cycle synchronization analysis. Genes related to cell cycle regulation was modified by HCV infection and gene interaction analysis in GeneSpring GX in Direct Interactions mode highlighted 31 genes. In conclusion, the responses of those two cell lines were different upon HCV infection. HCV infection blocked G1/S transition and cell cycle progress, thus reduced the cell viability in Huh7.5.1 cells but not in Lunet-CD81 cells. Lunet-CD81 cells might be suitable for long term infection studies of HCV.
文摘丙型肝炎病毒(Hepatitis C virus,HCV)是导致人类肝脏疾病的重要病原体。长链非编码RNA(Long noncoding RNA,lncRNA)参与了许多疾病和生物过程的调控,但是lncRNA在HCV感染中的作用还了解很少。本研究旨在筛选HCV感染人肝癌细胞系Huh7.5.1后差异表达的长链非编码RNA(lncRNA),并研究相关lncRNA对细胞增殖及周期相关基因表达的影响。首先,分析HCV感染Huh7.5.1细胞72h前后lncRNA芯片表达谱;然后采用实时荧光定量PCR(Reverse tanscription-quantitative real time PCR,RT-qPCR)的方法对芯片中差异表达明显的17条lncRNA进行细胞水平验证;进一步采用CCK8以及ki67细胞增殖实验研究差异表达最明显的lncRNA对细胞增殖的影响;最后采用RT-qPCR探讨lncRNA对细胞周期蛋白基因cyclin B1/D1/E1的mRNA表达的影响。lncRNA芯片检测结果与RT-qPCR验证的相符的lncRNA中,发现HCV感染Huh7.5.1细胞后上调和下调最明显的两条lncRNA分别是RP11-288L9.1与ADAM20P1,而沉默RP11-288L9.1能抑制细胞周期蛋白基因cyclin B1/D1/E1的表达水平,并抑制Huh7.5.1细胞增殖。首次发现HCV感染后上调的RP11-288L9.1能促进细胞周期蛋白基因的表达水平和Huh7.5.1细胞增殖,另一种下调的ADAM20P1对细胞增殖影响不大。研究结果为HCV感染及肝癌细胞增殖提供了潜在的诊断标志物和治疗的新型靶点,具有一定的参考价值。
