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SRP042975
Danio rerio
4 Downloadable Samples
IlluminaHiSeq2000
Description
Scavenger receptors on the cell surface of macrophages play an important role in host defence through their ability to bind microbial ligands and induce phagocytosis. Concurrently, signal transduction pathways are initiated that aid in defence mechanisms against the invading microbe. Here we report on the function of scavenger receptor Marco (macrophage receptor with collagenous structure) during infection of zebrafish embryos with Mycobacterium marinum, a close relative of Mycobacterium tuberculosis. Morpholino knockdown demonstrates that Marco is required for the rapid phagocytosis of M. marinum following intravenous infection. Furthermore, gene expression analysis shows that Marco controls the initial transient pro-inflammatory response to M. marinum and remains a determining factor for the immune response signature at later stages of infection. Increased bacterial burden following marco knockdown indicates that this scavenger receptor is important for control of M. marinum growth, likely due to delayed phagocytosis and reduced pro-inflammatory signalling observed under conditions of Marco deficiency Overall design: Embryos were injected at the one cell stage with a morpholino targeting marco, or with the standard control morpholino from GeneTools for comparison. Subsequently, at 24 hours post fertilization (hpf) the morphants and their controls were manually dechorionated at 24 hpf and at 28 hpf they were infected by injecting 200 colony forming units of M. marinum Mma20 into the caudal vein, or mock-injected with PBS/2%PVP. After injections embryos were transferred into fresh egg water containing 0.003% 1-phenyl-2-thiourea (Sigma-Aldrich) to prevent melanization and incubated for 4 days at 28°C. After the incubation period, infected and uninfected morphants, mutants and their controls were imaged and groups of 30 embryos were snap-frozen in liquid nitrogen and RNA was isolated for Illumina RNAseq analysis.
Publication Title
Phagocytosis of mycobacteria by zebrafish macrophages is dependent on the scavenger receptor Marco, a key control factor of pro-inflammatory signalling.
Sample Metadata Fields
No sample metadata fields
View Samples- Escherichia coli
- 15 Downloadable Samples
Affymetrix E. coli Genome 2.0 Array (ecoli2)
Description
Comparison of gene expression profile of E. coli 83972 grown in minimal lab media, in urine and in 3 individual patients.
Publication Title
Global gene expression profiling of the asymptomatic bacteriuria Escherichia coli strain 83972 in the human urinary tract.
Sample Metadata Fields
No sample metadata fields
View Samples- Arabidopsis thaliana
- 12 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Identification of genes differentially expressed in roots of Arabidopsis Col-0 and ndr1-1 mutants 48 h post inoculation with the fungal pathogen Verticillium longisporum.
Publication Title
Susceptibility to Verticillium longisporum is linked to monoterpene production by TPS23/27 in Arabidopsis.
Sample Metadata Fields
Age, Specimen part, Time
View Samples- Hordeum vulgare
- 21 Downloadable Samples
- Affymetrix Barley Genome Array (barley1)
Description
Detection of single feature polymorphisms comparing five barley genotypes. Gene expression under unstressed and drought stressed conditions.
Publication Title
Detecting single-feature polymorphisms using oligonucleotide arrays and robustified projection pursuit.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 17 Downloadable Samples
- Illumina humanRef-8 v2.0 expression beadchip
Description
The in vitro effect of infection with different strains of Toxoplasma gondii was tested 24 hours after infection of Human Foreskin Fibroblasts (HFF)
Publication Title
Integrative genomic approaches highlight a family of parasite-specific kinases that regulate host responses.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 10 Downloadable Samples
- Affymetrix Human Transcriptome Array 2.0 (hta20)
Description
We used microarray to compare global gene expression profiles between 5 GNAQ/11 mutant uveal melanoma cell lines (GNAQ mutant: 92-1, omm1.3, mel270; GNA11 mutant: omm-gn11 and upmd-1) and 5 GNAQ/11 wild type melanoma cell lines(sk-mel-2, mm415, mm485, sk-mel-5 and mum2c). Uveal melanoma is the most common intraocular tumor that mainly metastasizes to the liver in about 50% patients. Over 80% of UMs harbor GNAQ or GNA11 activating mutation. Currently there is no effective treatment available for UM patients. Results provide insights into downstream signaling of oncogenic GNAQ/11 and identification of therapeutic targets in UM.
Publication Title
RasGRP3 Mediates MAPK Pathway Activation in GNAQ Mutant Uveal Melanoma.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus, Homo sapiens
- 25 Downloadable Samples
Illumina HumanRef-8 v3.0 expression beadchip
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Differential induction of TLR3-dependent innate immune signaling by closely related parasite species.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Homo sapiens
- 13 Downloadable Samples
- Illumina HumanRef-8 v3.0 expression beadchip
Description
The closely related protozoan parasites Toxoplasma gondii and Neospora caninum display similar life cycles, subcellular ultrastructure, invasion mechanisms, metabolic pathways, and genome organization, but differ in their host range and disease pathogenesis. Type II () interferon has long been known to be the major mediator of innate and adaptive immunity to Toxoplasma infection, but genome-wide expression profiling of infected host cells indicates that Neospora is a potent activator of the type I (/) interferon pathways typically associated with antiviral responses. Infection of macrophages from mice with targeted deletions in various innate sensing genes demonstrates that host responses to Neospora are dependent on the toll-like receptor Tlr3 and the adapter protein Trif. Consistent with this observation, RNA from Neospora elicits TLR3-dependent type I interferon responses when targeted to the host endo-lysosomal system. Although live Toxoplasma fail to induce type I interferon, heat-killed parasites do trigger this response, albeit much weaker than Neospora, and co-infection studies reveal that T. gondii actively suppresses the production of type I interferon. These findings reveal that eukaryotic pathogens can be potent inducers of type I interferon and that related parasite species interact with this pathway in distinct ways.
Publication Title
Differential induction of TLR3-dependent innate immune signaling by closely related parasite species.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Mus musculus
- 12 Downloadable Samples
- Illumina HumanRef-8 v3.0 expression beadchip
Description
The closely related protozoan parasites Toxoplasma gondii and Neospora caninum display similar life cycles, subcellular ultrastructure, invasion mechanisms, metabolic pathways, and genome organization, but differ in their host range and disease pathogenesis. Type II () interferon has long been known to be the major mediator of innate and adaptive immunity to Toxoplasma infection, but genome-wide expression profiling of infected host cells indicates that Neospora is a potent activator of the type I (/) interferon pathways typically associated with antiviral responses. Infection of macrophages from mice with targeted deletions in various innate sensing genes demonstrates that host responses to Neospora are dependent on the toll-like receptor Tlr3 and the adapter protein Trif. Consistent with this observation, RNA from Neospora elicits TLR3-dependent type I interferon responses when targeted to the host endo-lysosomal system. Although live Toxoplasma fail to induce type I interferon, heat-killed parasites do trigger this response, albeit much weaker than Neospora, and co-infection studies reveal that T. gondii actively suppresses the production of type I interferon. These findings reveal that eukaryotic pathogens can be potent inducers of type I interferon and that related parasite species interact with this pathway in distinct ways.
Publication Title
Differential induction of TLR3-dependent innate immune signaling by closely related parasite species.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 7 Downloadable Samples
- Affymetrix Murine Genome U74A Version 2 Array (mgu74av2)
Description
Background: The use of electrical pulses to enhance uptake of molecules into living cells have been used for decades. This technique, often referred to as electroporation, has become an increasingly popular method to enhance in vivo DNA delivery for both gene. therapy applications as well as for delivery of vaccines against both infectious diseases and cancer. In vivo electrovaccination is currently being investigated in several clinical trials, including DNA delivery to healthy volunteers. However, the mode of action at molecular level is not yet fully understood.
Publication Title
Skin electroporation: effects on transgene expression, DNA persistence and local tissue environment.
Sample Metadata Fields
Specimen part
View Samples