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Expression Data from Toxoplasma gondii Infected Murine Macrophages and Dendritic Cells

ABSTRACT: We wanted to determine how type II versus type III Toxoplasma infection affect host gene expression We infected mouse macrophage (RAW264.7 and J774) and dendritic (DC2.4) cell lines with type II (Me49) and type III (CEP) cells were grown in T75 until 80% confluency, then infected with parasites for 18 hours at MOI of 7. Then the RNA was harvested from the cells by Trizol.

ORGANISM(S): Mus musculus

SUBMITTER: Kenneth Hu

PROVIDER: E-GEOD-29584 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Expression Data from Toxoplasma gondii Infected Murine Macrophages and Dendritic Cells

Project description:We wanted to determine how type II versus type III Toxoplasma infection affect host gene expression We infected mouse macrophage (RAW264.7 and J774) and dendritic (DC2.4) cell lines with type II (Me49) and type III (CEP)

2011-05-29 | GSE29584 | GEO

Expression data from Human foreskin fibroblasts (HFFs) infected with Toxoplasma gondii.

Project description:Toxoplasma strains have been shown to modulate host cell transcription. We have found a type II Toxoplasma gene, GRA15, which activates the nuclear translocation of the NF-kappaB p65 transcription factor. We used microarrays to determine how GRA15II modulates host cell transcription. HFFs were infected with type I (RH), type I GRA15II (RH GRA15II), type II (Pru), type II GRA15KO (Pru GRA15KO), type III (cep), or type III GRA15II (cep GRA15II) parasites for 18-24 hours. Some samples were also stimulated with TNF-alpha. Total RNA was isolated and hybridized to Affymetrix GeneChip Human Genome U133A 2.0 arrays.

2011-01-10 | E-GEOD-25468 | biostudies-arrayexpress

Expression data from RAW264.7 murine macrophages infected with Toxoplasma gondii and subsequently stimulated with interferon-gamma

Project description:Toxoplasma strains are known to inhibit the expression of several interferon-gamma induced genes, and a type II strain was shown to dysregulate genome-wide responses to interferon-gamma in human fibroblasts (Kim et al., 2007, J Immunol.). In this study we aimed to determine the effect of infection with three clonal lineages of Toxoplasma, type I, II, and III strains on genome-wide interferon-gamma induced transcription in murine macrophages. We also assessed the effect of the two main Toxoplasma modulators of mouse macrophage transcription, ROP16 and GRA15 (Jensen et al., 2011, Cell Host Microbe). We used Affymetrix microarrays to analyze host cell transcription after Toxoplasma infection and interferon-gamma stimulation. RAW264.7 murine macrophages were left uninfected or infected with type I (RH), type I ?rop16 (RH ?rop16), type II (Pru), type II ?gra15 (Pru ?gra15), or type II (CEP) parasites at an MOI ~5 for 18 hours and subsequently stimulated with murine IFN-? for six hours. Plaque assays were done to assess parasite viability. Total RNA was isolated and hybridized to Affymetrix Mouse 430A 2.0 gene chips.

2013-02-19 | E-GEOD-34913 | biostudies-arrayexpress

Strain-dependent host responses in chicken embryonic fibroblasts infected with Toxoplasma gondii [ME49, CEP, and Mock]

Project description:Toxoplasma gondii is a ubiquitous protozoan pathogen able to infect both mammalian and avian hosts. Surprisingly, just three strains appear to account for the majority of isolates from Europe and N. America. To test the hypothesis that strain divergence might be driven by differences between mammalian and avian response to infection, we examine in vitro strain-dependent host responses in a representative avian host, the chicken. Chicken embryonic fibroblasts were cultivated in vitro and infected with different strains of Toxoplasma gondii (Type II = ME49, Type III = CEP); host transcriptional responses were then analyzed at 24 hours post-infection.

2011-05-27 | E-GEOD-29562 | biostudies-arrayexpress

Infection of macrophages by Toxoplasma Progeny from a Type II x Type III cross

Project description:Infection of RAW264.7 cells for 24 hours with 32 Toxoplasma Progeny from a Type II x Type III cross To measure changes in gene expression induced in macropahges upon Toxoplasma infection, we infected RAW 264.7 macrophages in cell culture with one of 32 Toxoplasma parasite progeny from a Type II x Type III cross. RNA was harvested 24 hours post infection.

2014-06-01 | GSE56534 | GEO

Infection of macrophages by Toxoplasma Progeny from a Type II x Type III cross

2014-06-01 | E-GEOD-56534 | biostudies-arrayexpress

Differential gene expression in mice infected with distinct Toxoplasma gondii strains

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

Differential gene expression in mice infected with distinct Toxoplasma gondii strains

2011-12-22 | E-GEOD-34416 | biostudies-arrayexpress

Expression Data from Toxoplasma gondii-Infected Murine Bone Marrow-Derived Macrophages

Project description:We wanted to determine how type II Toxoplasma GRA15 and type I ROP16 affect host gene expression. We infected bone marrow-derived macrophages (BMMs) from B6 mice with type II (Pru), type II +ROP16 I, type II ?gra15, or type II ?gra15 + ROP16I. BMMs were plated, then infected with parasites for 18 hours. RNA was harvested from the cells by Trizol.

2011-05-20 | E-GEOD-29404 | biostudies-arrayexpress

Gene expression Data from Toxoplasma gondii-Infected Murine Bone Marrow-Derived STAT6 and STAT3 Deficient Macrophages

Project description:The Toxoplasma type I ROP16 kinase directly activates the host STAT3 and STAT6 transcription factors and regulates the expression of many host genes. However, many of genes lack known STAT3/6 transcription factor binding sites in their promoter regions. We wanted to understand what fraction of host genes that are modulated by ROP16 were dependent on the STAT3 and STAT6 signaling pathways. Bone marrow-derived macrophages (BMMs) from mLys-Mcre Stat3fl/fl mice were infected with type II (Pru A7), type II +ROP16 I, type II Δgra15, or type II Δgra15 + ROP16I and gene expression was analyzed 18 hrs after infection. This data set was generated side by side with infections performed in B6 BMDMs, the gene expression results for that experiment were previoiusly submitted under the GEO accession number GSE29404. In addition, gene expression of wild type B6 and Stat6-/- BMDMs were infected with the II+ROP16I strain.

2013-03-20 | E-GEOD-45309 | biostudies-arrayexpress

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