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    • 80. 发明授权
    • Flavivirus-based system for production of hepatitis C virus (HCV)
    • 用于生产丙型肝炎病毒(HCV)的基于黄病毒病毒的系统
    • US09052321B2
    • 2015-06-09
    • US13122154
    • 2009-09-28
    • Bertrand SaunierMiriam TriyatniEdward A. Berger
    • Bertrand SaunierMiriam TriyatniEdward A. Berger
    • C12N5/10C12N15/85G01N33/68C12Q1/68G01N33/576C07K14/005
    • G01N33/5767C07K14/005C12N2770/24144C12N2770/24222C12N2770/24243
    • Provided herein is a mammalian cell transformed to contain a plasmid encoding a T7 or SP6 promoter operably linked to one or more HCV genes, a subgenomic replicon from a flavivirus and a cytoplasmic T7 and SP6 RNA amplification system. Also provided herein are isolated replication-competent HCV particles produced by the method comprising the steps of providing a transformed mammalian cell according to the first embodiment, culturing the cell, and recovering the replication-competent HCV particles from the cell culture. Provided herein are isolated HCV structural proteins produced by the method comprising the steps of providing a transformed mammalian cell according to the first embodiment, culturing the cell, and recovering the HCV structural proteins from the cell culture. Further provided herein is a system for assaying HCV entry into a cell comprising a first plasmid encoding a T7 or SP6 promoter operably linked to an HCV polynucleotide comprising at least the 5′-UTR to NS2 operably linked to an EMCV IRES in frame with an SP6 or T7 polymerase gene, respectively, a first host cell line expressing a replicon from a flavivirus and comprising a cytoplasmic T7 and SP6 RNA amplification system, a second plasmid encoding a reporter gene operably linked to both T7 and SP6 promoters in tandem, and a second host cell line comprising a cytoplasmic T7 polymerase or SP6 polymerase RNA amplification system.
    • 本文提供了转化成含有编码与一种或多种HCV基因可操作地连接的T7或SP6启动子的质粒的哺乳动物细胞,来自黄病毒的亚基因组复制子和细胞质T7和SP6 RNA扩增系统。 本文还提供了通过包括以下步骤的方法产生的分离的可复制的HCV颗粒,所述方法包括提供根据第一实施方案的转化的哺乳动物细胞,培养细胞,以及从细胞培养物中回收可复制的HCV颗粒。 本文提供了通过包括以下步骤的方法产生的分离的HCV结构蛋白,所述方法包括提供根据第一实施方案的转化的哺乳动物细胞,培养细胞,以及从细胞培养物中回收HCV结构蛋白。 本文进一步提供用于测定HCV进入细胞的系统,其包含编码T7或SP6启动子的第一质粒,所述第一质粒可操作地连接至包含至少5'- UTR至NS2的HCV多核苷酸,其可操作地连接到具有SP6的框架的EMCV IRES 或T7聚合酶基因,表达来自黄病毒的复制子的第一宿主细胞系,其包含细胞质T7和SP6RNA扩增系统,编码与T7和SP6启动子串联可操作地连接的报告基因的第二质粒和第二个 包含细胞质T7聚合酶或SP6聚合酶RNA扩增系统的宿主细胞系。