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The extensive genetic diversity of porcine reproductive and respiratory syndrome virus (PRRSV) strains is a major obstacle for vaccine development. We previously demonstrated that chimeric PRRSVs in which a single envelope gene (ORF3, ORF4, ORF5 or ORF6) was shuffled via DNA shuffling had an improved heterologous cross-neutralizing ability. In this study, we incorporate all of the individually-shuffled...
The nonstructural protein 9 (Nsp9) of porcine reproductive and respiratory syndrome virus (PRRSV) is a RNA-dependent RNA polymerase (RdRp) that plays a vital role in viral replication. This study first demonstrated that the Nsp9 of genotype 2 PRRSV interacted with cellular retinoblastoma protein (pRb), and Nsp9 co-localized with pRb in the cytoplasm of PRRSV-infected MARC-145 cells and pulmonary alveolar...
A strain of the porcine cytomegalovirus (PCMV), which causes inclusion body rhinitis in newborn piglets, has been characterized with respect to its complete genome sequence. The virus genome is 128,367bp, containing 79 predicted open reading frames (ORFs). Of these ORFs, 69 have counterparts in human herpesvirus 6A (HHV-6A), 6B (HHV-6B) and 7 (HHV-7), and two ORFs are homologous to other members in...
Porcine reproductive and respiratory syndrome virus (PRRSV) is an important swine pathogen. Here we applied the DNA shuffling approaches to molecularly breed the PRRSV GP3 gene, a neutralizing antibodies inducer, in an attempt to improve its heterologous cross-neutralizing ability. The GP3 genes of six different PRRSV strains were bred by traditional DNA shuffling. Additionally, synthetic DNA shuffling...
In this study, we confirmed the autophagy induced by porcine reproductive and respiratory syndrome virus (PRRSV) in permissive cells and investigated the role of autophagy in the replication of PRRSV. We first demonstrated that PRRSV infection significantly results in the increased double-membrane vesicles, the accumulation of LC3 fluorescence puncta, and the raised ratio of LC3-II/β-actin, in MARC-145...
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