Toxoplasma gondii GT1
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ABSTRACT:
PROVIDER: PRJNA16727 | ENA |
REPOSITORIES: ENA
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Project description:Toxoplasma gondii GT1 Transcriptome or Gene expression
| PRJNA287754 | ENA
Project description:Transcriptome analysis of peritoneal lavage of mice infected with T. gondii Toxoplasma gondii is the causative agent of toxoplasmosis in human and animals. In mouse model, T. gondii strains can be divided into three groups, including the virulent, intermediately virulent and non-virulent. The clonal Type I, II and III T. gondii strains belong to these three groups respectively. To better understand the basis of virulence phenotypes, we investigated mouse gene expression responses to the infection of different T. gondii strains at day 5 post intraperitoneal inoculation with 500 tachyzoites. The transcriptomes of mouse peritoneal cells showed that 1927, 1573, and 1009 transcripts were altered more than 2 fold by Type I, II and III infections, respectively, and majority of altered transcripts were shared. Overall transcription patterns were similar in Type I and Type II infections and both had greater changes than that of Type III. Quantification of parasite burden in mouse spleens showed that Type I was 1000 times higher than Type II, and Type II was 20 times higher than Type III. Fluorescence activated cell sorting revealed that Type I and II infections had comparable macrophage populations and both were higher than Type III infection. In addition, Type I infection had higher percentage of neutrophils than that of Type II and III. Taken together, these results suggested that there is a common gene expression response to T. gondii infection in mice. This response is further modified by parasite strain specific factors that determine their distinct virulence phenotypes. We analyzed mRNA from female CD1 outbred mice, 6-8 weeks old infected with Type I, II and III T. gondii strains. We used the Affymetrix Mouse Gene 1.0 ST platform. Raw array data was processed by Partek® Genomics SuiteTM software. Three replicates were performed for Type I-GT1 and Type III-CTG and two replicates for Type II- PTG.
2011-12-22 | E-GEOD-34416 | biostudies-arrayexpress
Project description:Transcriptome analysis of peritoneal lavage of mice infected with T. gondii Toxoplasma gondii is the causative agent of toxoplasmosis in human and animals. In mouse model, T. gondii strains can be divided into three groups, including the virulent, intermediately virulent and non-virulent. The clonal Type I, II and III T. gondii strains belong to these three groups respectively. To better understand the basis of virulence phenotypes, we investigated mouse gene expression responses to the infection of different T. gondii strains at day 5 post intraperitoneal inoculation with 500 tachyzoites. The transcriptomes of mouse peritoneal cells showed that 1927, 1573, and 1009 transcripts were altered more than 2 fold by Type I, II and III infections, respectively, and majority of altered transcripts were shared. Overall transcription patterns were similar in Type I and Type II infections and both had greater changes than that of Type III. Quantification of parasite burden in mouse spleens showed that Type I was 1000 times higher than Type II, and Type II was 20 times higher than Type III. Fluorescence activated cell sorting revealed that Type I and II infections had comparable macrophage populations and both were higher than Type III infection. In addition, Type I infection had higher percentage of neutrophils than that of Type II and III. Taken together, these results suggested that there is a common gene expression response to T. gondii infection in mice. This response is further modified by parasite strain specific factors that determine their distinct virulence phenotypes.
2011-12-22 | GSE34416 | GEO
Project description:Lysine lactylation (Kla) is a new posttranslational modification (PTM) identified in histone and nonhistone proteins of several eukaryotic cells that directly activate gene expression and DNA replication. However, very little is known about their scope and cellular distribution in apicomplexan parasites that are important to public and animal health. Toxoplasma gondii, the agent of toxoplasmosis, is one of obligate intracellular apicomplexan parasite that can infect all kinds of nucleated cells of animals and humans. Using this parasite as model organism, herein, we produced the first global lysine lactylome profile through LC-MS/MS. Overall, a total of 983 Kla sites occurred on 523 lactylated proteins were identified in Toxoplasma tachyzoites, the acute toxoplasmosis-causing stage. Bioinformatics analysis revealed that these lactylated proteins are evolutionarily conserved and involved in a wide variety of cellular functions such as energy metabolism, gene regulation and protein biosynthesis. Moreover, the results from subcellular localization analysis and IFA showed that the majority of lactylated T. gondii proteins localized in the nucleus, indicating a potential impact of Kla on gene regulation. Notably, an extensive batch of parasite-specific proteins unique to Apicomplexa is lactylated in T. gondii. Our findings revealed that Kla was widespread in the early branching eukaryotic cell, and that lactylated proteins, including a crowd of unique parasite proteins, were involved in a remarkably diverse array of cellular functions. These valuable data will improve our understanding of the evolution of Kla while potentially providing novel therapeutic avenues.
2022-06-09 | PXD031526 | Pride
Project description:Parasite gene expression differences have been reported previously between RH-ERP, RH-JSR and GT1. To independently confirm these gene expression differences, we examined the parasite gene expression profiles of RH-ERP, RH-JSR and GT1 through microarray.
2013-08-20 | GSE44191 | GEO
Project description:Toxoplasma gondii is a parasitic protist that is the agent of toxoplasmosis. It is capable of infecting all mammals, including humans. The infection is mainly asymptomatic in immunocompetent patients, but in case of immunosuppression or for the congenital form of toxoplasmosis it can lead to severe pathologies with a possible fatal outcome. T. gondii contains two organelles of endosymbiotic origin: the mitochondrion and the apicoplast, which is a non-photosynthetic plastid. These organelles contain important biochemical pathways which might be interesting targets for future therapeutic strategies. Iron-sulfur clusters are one of the most ancient and ubiquitous prosthetic groups, and they are required by a variety of proteins involved in important metabolic processes. As for plants, T. gondii has several pathways for biosynthesis of iron-sulfur proteins, located in three different cellular compartments: the cytoplasm, the mitochondrion and the apicoplast. We have investigated the relative contributions of the mitochondrion and the apicoplast to the iron-sulfur proteome of the parasite by generating specific mutants for key proteins of the mitochondrial (TgIscU) and plastidic (TgSufS) pathways, on which we performed a quantitative proteomic analysis.
2021-11-09 | PXD023854 | Pride
Project description:Serological diagnostic methods (anti-T. gondii IgM and IgG) and PCR-based diagnosis are the two main methods used to diagnose acute toxoplasmosis. However, serological assays pose limitations, such as IgM false positives, the long-lasting presence of residual specific Abs, and potential IgG immaturity, complicating diagnostic decision making. Moreover, PCR-based diagnosis is not always useful in the case of acute acquired toxoplasmosis. T. gondii excretory-secretory Ags (ESAs) form the majority of the circulating Ags (CAgs) present in serum of patients with acute toxoplasmosis and have been proven to be useful and valuable for acute toxoplasmosis diagnosis. Additionally, the infection route has no effect on the detection of CAgs. Particularly, they have been shown to exist in the cerebrospinal fluid of HIV-infected patients with cerebral toxoplasmosis. Thus, screening and identification of diagnostic markers from CAg components can therefore help to improve the accuracy of acute toxoplasmosis diagnosis.
2021-08-18 | PXD028016 | iProX
Project description:Parasite gene expression differences have been reported previously between RH-ERP, RH-JSR and GT1. To independently confirm these gene expression differences, we examined the parasite gene expression profiles of RH-ERP, RH-JSR and GT1 through microarray. Three type I strains of Toxoplasma gondii were compared with one array each, and these were used to verify data from previous studies.
2013-08-20 | E-GEOD-44191 | biostudies-arrayexpress