Project description:The pathogenesis of bovine besnoitiosis and the molecular bases that govern disease progression remain to be elucidated. Thus, we have employed an in vitro model of infection based on primary bovine aortic endothelial cells (BAEC), a target cell culture of acute infection. Next, host-parasite interactions were investigated by RNA-Seq at two post-infection (pi) time points: 12 hpi, when tachyzoites have already invaded host cells, and 32 hpi, when Besnoitia besnoiti tachyzoites have replicated for at least two generations. Additionally, the gene expression profile of B. besnoiti tachyzoites was also studied at both pi time points.
Project description:Infection of cattle with Mycobacterium bovis causes severe financial hardship in many countries, in addition to presenting a health risk for humans. As an intracellular pathogen, M. bovis, adapted to survive and thrive within the intramacrophage environment. However, little is known about expression patterns in the macrophage, particularly in the bovine host. In this study, DNA microarray analysis was used to detect genes expressed in Holstein bovine macrophages derived from peripheral blood mononuclear cells infected during four hours with two Argentinean strains of M. bovis, a virulent strain, 04-303 and an attenuated strain, 534. Genes encoding antrax toxin receptor, cell division and apoptosis regulator, ankyrin proteins that are found within the membrane associated cytoskeleton, protein of cell differentiation and regulators of endocytic traffic of membrane were more strongly expressed in infected macrophages. Blood from healthy Holstein bovines was taken in sterile conditions and peripheral blood mononuclear cells (PBMC) were separated from heparinized blood. PBMCs were used to prepare ten independent cultures which were incubated at 37C for one week in RPMI 1640 complete medium supplemented with 10% of autologous plasma. Four cultures were infected with viable cells of M. bovis virulent strain 04-303, four with avirulent strain 534 and two were left as uninfected controls. Four hours post infection, the cells were scraped, lysed. RNA was extracted, labeled and hybridized to ten Affymetrix Bovine Genome arrays.
Project description:Analysis of gene expression in macrophages infected with influenza A virus or Mock and treated with the VX-787 to investigate the effects VX-787 have on transcriptional response in human macrophages. Human macrophages were infected with influenza A/WSN/1933(H1N1) or A/Udorn/307/72(H3N2) viruses, or non-infected (Mock). 10nM VX-787 was treated to WSN, Udorn or Mock infected cells, repectively.
Project description:Dual transcriptomics of Besnoitia besnoiti infected fibroblasts reveals hallmarks and molecular biomarkers of early fibrosis associated to TGF beta upregulation and MAPK signalling and novel parasite effectors
Project description:Analysis of gene expression in macrophages infected with influenza A virus or Mock and treated with the VX-787 to investigate the effects VX-787 have on transcriptional response in human macrophages.
Project description:We used different zebrafish transgenic lines to sort macrophages, neutrophils and immature lymphoid cells from 5-6 day old zebrafish larvae and analyzed their transcriptomes. Comparison between the different transcriptomes and gene ontology analysis revealed specificities for each cell population. Comparison with previously published data showed that zebrafish larval macrophages expressed several known human M1 and M2 macrophages. Transcriptome analysis of uninfected and infected macrophages from embryos infected by of Mycobacterium marinum revealed infection induced transcriptional changes and a shift towards M1 transcriptomic signature.
