Project description:Geographical distinct virulent Babesia bovis strains have similar gene expression changes as they go through attenuation. Pair end RNA-sequencing reads on three biological replicate sample pairs of virulent parent and attenuated derivative Babesia bovis strain isolated in Argentina.
Project description:Babesia parasites transition between a mammalian host, where they cause babesiosis, and the tick vector that transmits them. This transition provides an environmental signal resulting in altered gene expression allowing the completion of the parasite’s life cycle. A comparison of the different life stages that occur within mammalian and tick hosts can provide insight into the adaptation of Babesia to these different environments. In this study, we used RNA-Seq to compare gene expression between Babesia bovis blood stages and tick derived kinetes.
Project description:To understand Babesia gene regulation during tick and mammalian host infection, we performed high throughput RNA-sequencing using samples collected from calves and Rhipicephalus microplus ticks infected with Babesia bigemina. We evaluated gene expression differences between B. bigemina kinetes and blood-stage parasites
Project description:Mycobacterium bovis is an intracellular pathogen that causes tuberculosis in cattle. Following infection, the pathogen resides and persists inside host macrophages by subverting host immune responses via a diverse range of mechanisms. Here, a high-density bovine microarray platform was used to examine the bovine monocyte-derived macrophage transcriptome response to M. bovis infection relative to infection with the attenuated vaccine strain, M. bovis Bacille Calmette–Guérin. Differentially expressed genes were identified (adjusted P-value ≤ 0.01) and interaction networks generated across an infection time course of 2, 6 and 24 h. The largest number of biological interactions was observed in the 24 h network, which exhibited small-worldscale-free network properties. The 24 h network featured a small number of key hub and bottleneck gene nodes, including IKBKE, MYC, NFKB1 and EGR1 that differentiated the macrophage response to virulent and attenuated M. bovis strains, possibly via the modulation of host cell death mechanisms. These hub and bottleneck genes represent possible targets for immunomodulation of host macrophages by virulent mycobacterial species that enable their survival within a hostile environment.
