Ontology highlight
ABSTRACT:
PROVIDER: PRJNA797162 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:The goal of this experiment is to evaluate the potential for utilising this oligonucleotide microarray in other species and genera of the Pinaceae family by using comparative RNA hybridizations in four different spruces (Picea spp), two pines (Pinus spp.) and a larch (Larix laricina), across two tissues, xylem and phelloderm.
2012-02-16 | GSE35847 | GEO
Project description:The goal of this experiment is to evaluate the potential for utilising this oligonucleotide microarray in other species and genera of the Pinaceae family by using comparative RNA hybridizations in four different spruces (Picea spp), two pines (Pinus spp.) and a larch (Larix laricina), across two tissues, xylem and phelloderm. One-color comparison of 7 conifer species in 2 tissue types: xylem and phelloderm. Between 4 and 28 biological repetitions per sample type, depending on the species, for a total of 142 slides.
2012-02-16 | E-GEOD-35847 | biostudies-arrayexpress
Project description:Genomic surveys of yeast hybrid species isolated from the wild and from human-related environment, aimed at the reconstruction of the natural evolution of Saccharomyces spp. evolution
2016-04-30 | E-SYBR-11 | biostudies-arrayexpress
Project description:MicroRNAs (miRNA) are small, endogenous RNAs that regulate the expression of mRNAs posttranscriptionally. Evolutionarily new miRNAs, like new protein-coding genes, are dominantly expressed in reproductive organs. To dissect the evolutionary dynamics of new miRNAs in Drosophila spp, we sequenced small RNAs from two species of Drosophila, including four samples from reproductive organs and one sample from imaginal discs / CNS. miRNA expression profile shows vast majority of new miRNAs are specifically expressed in testes and/or ovaries, suggesting a role of sexual selection for new miRNA evolution.
2013-12-31 | GSE48017 | GEO
Project description:Hymenolepis spp. (H. diminuta, H. nana and H. microstoma) are rodent-hosted tapeworms (Platyhelminthes: Cestoda) that have been used as laboratory and teaching models since the 1950s, and consequently much of our understanding of the basic physiology, biochemistry and anatomy of tapeworms in general stems from research using these species. As representatives of the order Cyclophyllidea, they are closely related to species with significant medical and economic importance such as Taenia and Echinococcus spp., but unlike these may be maintained in vivo using only laboratory mice and flour beetles (n.b. Echinoccous spp. are hosted by foxes and Taenia spp. are hosted by pigs or cows). This effort brings a classical laboratory model into the genomic age, allowing researchers in silico access to its genome and expressed gene transcripts and thereby greatly expediting research directed at understanding the genetic basis of tapeworm biology.
2013-01-28 | E-ERAD-56 | biostudies-arrayexpress
Project description:Sequencing of two Syndiniales dinoflagellate species, Amoebophrya spp. A25 and A120
| PRJEB39972 | ENA
Project description:Brucella dynamically engage macrophages while trafficking to an intracellular replicative niche as macrophages, the first line of innate host defense, attempt to eliminate organisms. Brucella melitensis, B. neotomae, and B. ovis are highly homologous, yet exhibit a range of host pathogenicity and specificity. RAW 264.7 macrophages infected with B. melitensis, and B. ovis exhibit divergent patterns of bacterial persistence and clearance; conversely, B. melitensis and B. neotomae exhibit similar patterns of infection. Evaluating early macrophage interaction with Brucella spp. allows discovery of host entry and intracellular translocation mechanisms, rather than bacterial replication. Microarray analysis of macrophage transcript levels following a 4 hr Brucella spp. infection revealed 130 probe sets altered compared to uninfected macrophages; specifically, 72 probe sets were increased and 58 probe sets were decreased with any Brucella spp. Interestingly, much of the inflammatory response was not regulated by the number of Brucella gaining intracellular entry, as macrophage transcript levels were often equivalent among B. melitensis, B. ovis, and B. neotomae infections. An additional 33 probe sets were identified with altered macrophage transcript levels among Brucella spp. infections that may correlate with species specific host defenses and intracellular survival. Gene ontological categorization unveiled genes altered among species are involved in cell growth and maintenance, response to external stimuli, transcription regulation, transporter activity, endopeptidase inhibitor activity and G-protein mediated signaling. Host transcript profiles provide a foundation to understand variations in Brucella spp. infections, while structure of the macrophage response and intracellular niche of Brucella spp. will be revealed through piecewise consideration of host signaling pathways. Keywords: Macrophage, intracellular pathogen, Brucella melitensis, Brucella neotomae, Brucella ovis, inflammatory immune response, species specificity
2010-01-01 | GSE8385 | GEO
Project description:Aims: To assess the virulence of multiple Aeromonas spp. using two models, a neonatal mouse assay and a mouse intestinal cell culture. Methods and Results: Transcriptional responses to both infection models were evaluated using microarrays. After artificial infection with a variety of Aeromonas spp., mRNA extracts from the two models were processed and hydridized to murine microarrays to determine host gene response. Definition of virulence was determined based on host mRNA production in murine neonatal intestinal tissue and mortality of infected animals. Infections of mouse intestinal cell cultures were then performed to determine whether this simpler model system's mRNA responses correlated to neonatal results and therefore be predictive of virulence of Aeromonas spp. Virulent aeromonads up-regulated transcripts in both models including multiple host defense gene products (chemokines, regulation of transcription and apoptosis, cell signaling). Avirulent species exhibited little or no host response in neonates. Mortality results correlated well with both bacterial dose and average fold change of up-regulated transcripts in the neonatal mice. Conclusions: Cell culture results were less discriminating but showed promise as potentially being able to be predictive of virulence. Jun oncogene up-regulation in murine cell culture is potentially predictive of Aeromonas virulence. Significance and Impact of the Study: Having the ability to determine virulence of waterborne pathogens quickly would potentially assist public health officials to rapidly assess exposure risks. Experiment Overall Design: Two infection models were assessed, live, whole animals (neonatal Swiss Webster mice) and a murine small intestinal cell culture. Biological replicates (n=5) were infected with different Aeromonas species/strains and compared to uninfected controls.
2008-06-15 | E-GEOD-6065 | biostudies-arrayexpress