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
Impact statement Nonhuman primates(NHPs)such as monkeys are the closest living relatives to humans and are the best available models for causative studies of human health and diseases.Gut microbiomes are intensively i...Impact statement Nonhuman primates(NHPs)such as monkeys are the closest living relatives to humans and are the best available models for causative studies of human health and diseases.Gut microbiomes are intensively involved in host health.In this study,by large-scale cultivation of microbes from fecal samples of monkeys,we obtained previously uncultured bacterial species and constructed a Macaca fascicularis Gut Microbial Biobank(MfGMB).The MfGMB consisted of 250 strains that represent 97 species of 63 genera,25 families,and 4 phyla.The information of the 250 strains and the genomes of 97 cultured species are publicly accessible.The MfGMB represented nearly 50% of core gut microbial compositions at the genus level and covered over 80% of the KO-based known gut microbiome functions of M.fascicularis.Data mining showed that the bacterial species in the MfGMB were prevalent not only in NHPs gut microbiomes but also in human gut microbiomes.This study will help the understanding and future investigations on how gut microbiomes interact with their mammalian hosts.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.
基金financially supported by the National Key Research and Development Program of China(No.2019YFA0905601)the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB38020300)China Microbiome Initiative(CMI)supported by Chinese Academy of Sciences(CAS-CMI).
文摘Impact statement Nonhuman primates(NHPs)such as monkeys are the closest living relatives to humans and are the best available models for causative studies of human health and diseases.Gut microbiomes are intensively involved in host health.In this study,by large-scale cultivation of microbes from fecal samples of monkeys,we obtained previously uncultured bacterial species and constructed a Macaca fascicularis Gut Microbial Biobank(MfGMB).The MfGMB consisted of 250 strains that represent 97 species of 63 genera,25 families,and 4 phyla.The information of the 250 strains and the genomes of 97 cultured species are publicly accessible.The MfGMB represented nearly 50% of core gut microbial compositions at the genus level and covered over 80% of the KO-based known gut microbiome functions of M.fascicularis.Data mining showed that the bacterial species in the MfGMB were prevalent not only in NHPs gut microbiomes but also in human gut microbiomes.This study will help the understanding and future investigations on how gut microbiomes interact with their mammalian hosts.
