Project description:Influenza A virus (FLUAV) poses a significant threat to both humans and animals. While vaccination serves as the primary defense against influenza, the effectiveness of currently approved vaccines is suboptimal. To address this issue, we have developed modified live virus (MLV) vaccines against influenza using genome rearrangement techniques targeting the internal gene segments of FLUAV. The rearranged M2 (RAM) strategy involves cloning the M2 ORF downstream of the PB1 ORF in segment 2 and incorporating multiple early stop codons within the M2 ORF in segment 7. Additionally, the IgA-inducing protein (IGIP) coding region was inserted into the HA segment to further attenuate the virus and enhance protective mucosal responses. RAM-IGIP viruses exhibit similar growth rates to wild type (WT) viruses in vitro and remain stable during multiple passages in cells and embryonated eggs. The safety, immunogenicity, and protective efficacy of the RAM-IGIP MLV vaccine against the prototypical 2009 pandemic H1N1 strain A/California/04/2009 (H1N1) (Ca/04) were evaluated in Balb/c mice and compared to a prototypic cold-adapted live attenuated virus vaccine. The results demonstrate that the RAM-IGIP virus exhibits attenuated virulence in vivo. Mice vaccinated with RAM-IGIP and subsequently challenged with an aggressive lethal dose of the Ca/04 strain exhibited complete protection. Analysis of the humoral immune response revealed that the inclusion of IGIP enhanced the production of neutralizing antibodies and augmented the antibody-dependent cellular cytotoxicity response. Similarly, the RAM-IGIP potentiated the mucosal immune response against various FLUAV subtypes. Moreover, increased antibodies against NP and NA responses were observed. These findings support the development of MLVs utilizing genome rearrangement strategies in conjunction with the incorporation of immunomodulators.
Project description:We have performed a genome wide investigation for the binding locations of the transcriptional co-repressor proteins Ssn6, Tup11 and Tup12 in the fission yeast Schizosaccharomyces pombe. We have used a ChIP protocol described previously (Robyr et al, 2003) with microarrays containing ORF and IGR fragments representing the complete fission yeast genome (Wiren et al, 2005). Keywords: ChIP-CHIP
Project description:We have performed a genome wide investigation for the binding locations of the transcriptional co-repressor proteins Ssn6, Tup11 and Tup12 in the fission yeast Schizosaccharomyces pombe. We have used a ChIP protocol described previously (Robyr et al, 2003) with microarrays containing ORF and IGR fragments representing the complete fission yeast genome (Wiren et al, 2005). Keywords: ChIP-CHIP
Project description:We have performed a genome wide investigation for the binding locations of the transcriptional co-repressor proteins Ssn6, Tup11 and Tup12 in the fission yeast Schizosaccharomyces pombe. We have used a ChIP protocol described previously (Robyr et al, 2003) with microarrays containing ORF and IGR fragments representing the complete fission yeast genome (Wiren et al, 2005). Keywords: ChIP-CHIP
Project description:Microarray analysis on days 1, 2 and 7 post-infection with dengue, yellow fever and West Nile virus in Aedes aegypti Rockefeller strain mosquitoes RNA was purified and hybridized with Nimblegen X4 microarray chips using 81-mer probes designed from 18,000 open reading frames (ORF) found in the Ae. aegypti genome, with 2 different probes per ORF