Project description:Global gene expression in C. parvum environmental stage (oocysts) and the oocysts treated with UV comparing control untreated ones. Goal was to uncover the metabolic features in oocysts and the oocysts treated with UV. two-condition experiment, UV treatment vs. UV untreatment; two time points, 0.5h and 5h. Each time point, two Biological replicates(1, 2) with two technique replicates(1-1,1-2 ; 2-1, 2-2).
Project description:Global gene expression in C. parvum environmental stage (oocysts) and the oocysts treated with UV comparing control untreated ones. Goal was to uncover the metabolic features in oocysts and the oocysts treated with UV.
Project description:H69 cells were cultured in H69 medium with Cryptosporidium parvum oocysts(10 X 5 per well, for smaples 04, 05 and 06) or without oocysts(for samples 01, 02 and 03)for 8 hours and then collected for array analysis. Sample 07 was cells exposed to heated inactived oocysts. <br>
Project description:Cryptosporidium parvum is an important zoonotic parasitic disease worldwide, but the molecular mechanisms of the host–parasite interaction are not fully understood. Noncoding microRNAs (miRNAs) are considered key regulators of parasitic diseases. Therefore, we used microarray, qPCR, and bioinformatic analyses to investigate the intestinal epithelial miRNA expression profile after Cryptosporidium parvum infection.Twenty miRNAs were differentially expressed after infection (four upregulated and 16 downregulated). Further analysis of the differentially expressed miRNAs revealed that many important cellular responses were triggered by Cryptosporidium parvum infection, including cell apoptosis and the inflammatory and immune responses.This study demonstrates for the first time that the miRNA expression profile of human intestinal epithelium cells is altered by C. parvum infection. This dysregulation of miRNA expression may contribute to the regulation of host biological processes in response to C. parvum infection, including cell apoptosis and the immune responses. These results provide new insight into the regulatory mechanisms of host miRNAs during cryptosporidiosis, which may offer potential targets for future C. parvum control strategies.
Project description:The impact of digestive physicochemical parameters on Cryptosporidium parvum transcriptome was analysed in a human and age-dependent context using a dynamic in vitro gastrointestinal model. The sophisticated TIM-1 in vitro model was used for a comparative analysis of C. parvum gene expression under the digestive conditions encountered in young children (from 6 months to 2 years) or in adults following the simulated ingestion of a glass of water contaminated with C. parvum oocysts. The C. parvum gene expression profile was analysed by RNA-sequencing in the inoculum, as well as the gastric and ileal effluents collected from the TIM-1 system. Results showed that time and compartment of digestion lead to the strongest modification of parasite transcriptome. Accordingly, the highest number of differentially expressed genes was observed in parasite samples collected in child or adult ileal effluents between 120 and 180 min of digestion, where invasive stages (sporozoites) are predominant.
