Jon Duri Tratschin,Nicolas Ruggli,Kenneth Charles McCullough
申请号：
US12995874
公开号：
US09249395B2
申请日:
2009.05.30
申请国别(地区):
US
年份:
2016
代理人:
摘要：
The present invention concerns replicons of pestiviruses, in particular replicons of swine fever virus, engineered to have a defective replication thereby having lost infectivity, and further containing a foreign gene. A replicon of the invention contains all the genetic information required for its replication, but lacks essential codons or all codons of at least one of the genes encoding the viral structural proteins E1, E2, Ems or C protein, and consequently cannot generate infectious virus particles. Particular replicons are generated with a mutated gene encoding a modified Npro protein that no longer controls the cell interferon-induction pathway. Another particular replicon lacks the genes encoding all the structural proteins, the p7 protein and the NS2 protein, and has cytopathogenic properties in transduced cells. The replicons of the invention provide a new vector system that can be used for vaccination, gene delivery and gene therapy applications in mammals, including humans, as naked RNA or packaged into any form of delivery vehicle.
