Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Metabolic features of Cryptosporidium parvum oocysts: Control vs. UV treatment.

ABSTRACT: 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).

ORGANISM(S): Cryptosporidium parvum

SUBMITTER: haili zhang

PROVIDER: E-GEOD-34307 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Transcriptome analysis reveals unique metabolic features in the Cryptosporidium parvum Oocysts associated with environmental survival and stresses.

Zhang Haili H Guo Fengguang F Zhou Huaijun H Zhu Guan G

BMC genomics 20121121

<h4>Background</h4>Cryptosporidium parvum is a globally distributed zoonotic parasite and an important opportunistic pathogen in immunocompromised patients. Little is known on the metabolic dynamics of the parasite, and study is hampered by the lack of molecular and genetic tools. Here we report the development of the first Agilent microarray for C. parvum (CpArray15K) that covers all predicted ORFs in the parasite genome. Global transcriptome analysis using CpArray15K coupled with real-time qRT ...[more]

PMID: 23171372

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Project description:Phosphorylation is a regulatory mechanism by which intracellular apicomplexan parasites control the process of invading and modifying host cells. However, the sporulated oocysts’ phosphoprotein repertoires between virulent and avirulent strains of Toxoplasma gondii and the underlying mechanisms contributing to virulence is still a mystery. A quantitative analysis of the sporulated oocysts’ phosphoproteome profile of T. gondii virulent and avirulent strains belonging to different genotypes was conducted to reveal phosphoprotein expression patterns that contribute to the virulence of a particular phenotype. Phosphopeptides from the sporulated oocysts of the virulent strain PYS (Chinese ToxoDB#9) and the avirulent strain type II (PRU strain) were enriched by titanium dioxide (TiO2) affinity chromatography and quantified using iBT technology. A total of 10,645 unique phosphopeptides, 8,181 nonredundant phosphorylation sites and 2,792 phosphoproteins were identified. The quantitative analysis identified 4,129 differentially expressed phosphopeptides (DEPs) between sporulated oocysts of the PYS strain and PRU strain (|log1.5 fold change| > 1 and P < 0.05), including 2,485 upregulated and 1,644 downregulated phosphopeptides. Motif analysis identified 24 motifs from the upregulated phosphorylated peptides including 22 serine motifs and two threonine motifs (TPE and TP), and 15 motifs from the downregulated phosphorylated peptides including 12 serine motifs and three threonine motifs (TP, RxxT and KxxT) in PYS strain when comparing PYS/PRU. Several kinases were consistent with motifs of overrepresented phosphopeptides, such as PKA, PKG, CKII, IKK, MAPK, EGFR, INSR, Jak, Syk, Src, Ab1. GO analysis, KEGG pathway analysis and STRING analysis revealed differentially expressed phosphoproteins (DEPs) exhibiting significant functional properties. Kinase associated network analysis showed that AGC kinase had the greatest connected peptides. Our findings reveal significant difference in phosphopeptides of sporulated oocysts between virulent and avirulent T. gondii strains, which provides solid foundation for further exploring the mechanisms contributing to the virulence of T. gondii.

Dataset Information

Metabolic features of Cryptosporidium parvum oocysts: Control vs. UV treatment.

Publications

Transcriptome analysis reveals unique metabolic features in the Cryptosporidium parvum Oocysts associated with environmental survival and stresses.

Similar Datasets

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