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Large scale gene expression of Vero cell correlated to infection of infectious bursal disease virus

ABSTRACT: Infectious bursal disease virus (IBDV) is the pathogenic agent of infectious bursal disease (IBD). Scine it was observed in 1957, IBD spread worldwidely in the chicken flocks, is a important immunosuppressive disease and an threat to poultry industry. Although many studies have be done about IBDV, interaction of IBDV infection and IBDV-encoding genes to host cell gene expression are little known. In this study, the LongSAGE library of Vero-cell, IBDV- infected vero cell, Vero-cell transfected with IBDV-VP5 gene, Vero-cell transfected with IBDV A frament and Vero-cell transfected with IBDV VP243 frament were obtained. We got 96,213 gene tags (17 nucleotides), which represented 24,475 transcripts. Keywords: Transcripts of different state vero-cell

ORGANISM(S): Chlorocebus aethiops

PROVIDER: GSE6243 | GEO | 2007/11/05

SECONDARY ACCESSION(S): PRJNA97515

REPOSITORIES: GEO

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Project description:Nasal cavity is the main gateway for pathogen infection although it composed of many layers of defending barriers. Pathogens strongly willing to enter and infect from nasal cavity with the dominant form aerosol or respiratory droplets. However, the underlying mechanism of virus nasal infection and transmission are still unknown. Hence, a better understanding of this mechanism may provide insight into the pathogenesis of virus. In this study, IBDV was select as a model virus to study nasal infection and transmission for it could infect chicken from head (nasal) to tail (basal) and lead to massive destruction of bursal IgM+ B-lymphocytes. Initially, we found IBDV mostly entered and infected the interior of chicken’s nasal, where full of lymphoid tissue and easily for virus to transfer into blood. After passing nasal barriers, IBDV was subsequently transmit into blood and infected PBMCs. Following blood circulates, IBDV then infected bursal and hugely destroyed B-lymphocytes. However, the mechanism of how IBDV influenced the bursal cells, especially how virus destroyed B-lymphocytes were still unclear. With the help of single cells RNA sequence, we identified five vigorous clusters, including three immune cells types (B-cells: 64.70%, dendritic cells: 3.32% and T-cells: 6.33%) and two non-immune cell types (epithelial cells: 23.86% and fibroblast cells: 1.80% cells). Further analyses found that B-cells population were serious damaged, especially IgM+ B cells. However, the IgA+ B cells population hugely increased after IBDV infection. Interesting, we first demonstrated that basal cells and other non-immune cells in Bursa of Fabricius (BF) were the main target for IBDV infection and replication. Together, our study not only comprehensive elaborated the airborne IBDV and its transmission via intranasal route into the BF, but also explained its distribution in different immune and nonimmune cells and immunoglobulins rearrangement after immunosuppressive disorder on an age dependent infected organ.

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Large scale gene expression of Vero cell correlated to infection of infectious bursal disease virus

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