Gene expression analysis was conducted using a GeneChip Human Genome U133(HGU133A & B) array with more than 39,000 transcripts
No associated publication
Specimen part
View SamplesIschemic tolerance can be induced by numerous preconditioning stimuli, including various Toll-like receptor (TLR) ligands. We have shown previously that systemic administration of the TLR4 ligand, lipopolysaccharide (LPS) or the TLR9 ligand, unmethylated CpG ODNs prior to transient brain ischemia in mice confers substantial protection against ischemic damage. To elucidate the molecular mechanisms of preconditioning, we compared brain and blood genomic profiles in response to preconditioning with these TLR ligands and to preconditioning via exposure to brief ischemia.
Multiple preconditioning paradigms converge on interferon regulatory factor-dependent signaling to promote tolerance to ischemic brain injury.
Specimen part, Treatment
View SamplesDiagnosis of inflamed human orbit tissue with standard clinical and histopathology evaluation data is imprecise. A large number of these patients are diagnosed with the catch-all classification of nonspecific orbital inflammation (NSOI).
Orbital pseudotumor can be a localized form of granulomatosis with polyangiitis as revealed by gene expression profiling.
Sex, Specimen part, Disease
View SamplesWe hypothesized that patients with sarcoidosis have characteristic mRNA profiles. Microarray analysis of gene expression was done on peripheral blood. Comparing peripheral blood from patients with sarcoidosis to controls, 872 transcripts were upregulated and 1039 were downregulated at >1.5-fold change and a significant q value. Several transcripts associated with interferon and STAT1 were upregulated. Lung and lymph node analyses also showed dramatic increases in STAT1 and STAT1-regulated chemokines. Granulomas in lymph nodes of patients with sarcoidosis expressed abundant STAT1 and phosphorylated STAT1. STAT1 might play an important role in sarcoidosis. This novel hypothesis unites seemingly disparate observations with regard to sarcoidosis including implication of a casual role for interferons, a suspected infectious trigger, TH1 predominating lymphocytes in bronchoalveolar lavage, and the association with hypercalcemia.
Insights in to the pathogenesis of axial spondyloarthropathy based on gene expression profiles.
Sex, Age, Specimen part, Disease, Disease stage
View SamplesDiagnosis of inflamed human lacrimal gland with standard clinical and histopathology evaluation data is imprecise. A large number of these patients are diagnosed with the catch-all classification of nonspecific orbital inflammation (NSOI).
Gene Expression Profiling and Heterogeneity of Nonspecific Orbital Inflammation Affecting the Lacrimal Gland.
Sex, Specimen part, Disease
View SamplesC57BL/6J (B6) and DBA/2J (D2) are two of the most commonly used inbred mouse strains in neuroscience research. However, the only currently available mouse genome is based entirely on the B6 strain sequence. Subsequently, oligonucleotide microarray probes are based solely on this B6 reference sequence, making their application for gene expression profiling comparisons across mouse strains dubious due to their allelic sequence differences, including single nucleotide polymorphisms (SNPs). The emergence of next-generation sequencing (NGS) and the RNA-Seq application provides a clear alternative to oligonucleotide arrays for detecting differential gene expression without the problems inherent to hybridization-based technologies. Using RNA-Seq, an average of 22 million short sequencing reads were generated per sample for 21 samples (10 B6 and 11 D2), and these reads were aligned to the mouse reference genome, allowing 16,183 Ensembl genes to be queried in striatum for both strains. To determine differential expression, 'digital mRNA counting' is applied based on reads that map to exons. The current study compares RNA-Seq (Illumina GA IIx) with two microarray platforms (Illumina MouseRef-8 v2.0 and Affymetrix MOE 430 2.0) to detect differential striatal gene expression between the B6 and D2 inbred mouse strains. We show that by using stringent data processing requirements differential expression as determined by RNA-Seq is concordant with both the Affymetrix and Illumina platforms in more instances than it is concordant with only a single platform, and that instances of discordance with respect to direction of fold change were rare. Finally, we show that additional information is gained from RNA-Seq compared to hybridization-based techniques as RNA-Seq detects more genes than either microarray platform. The majority of genes differentially expressed in RNA-Seq were only detected as present in RNA-Seq, which is important for studies with smaller effect sizes where the sensitivity of hybridization-based techniques could bias interpretation.
Evaluating gene expression in C57BL/6J and DBA/2J mouse striatum using RNA-Seq and microarrays.
Sex, Specimen part
View SamplesWater and ToxB-infiltrated leaves of sensitive cultivar Katepwa were collected at 0,3,9,14,24,48 hours post infiltration (hpi), total RNA was extracted and processed. Expression levels were obtained using Affymetrix GeneChip Wheat Genome Array
Transcriptional changes induced by Ptr ToxB
Specimen part, Treatment, Time
View SamplesFanconi anemia (FA) is a rare inherited disease complicated by aplastic anemia. There is evidence that hematopoietic stem cells have lost self replicative capacity and undergo apoptosis when exposed to inhibitory cytokines including interferon gamma and tumor necrosis factor-alpha.
TLR8-dependent TNF-(alpha) overexpression in Fanconi anemia group C cells.
Sex, Age, Specimen part, Disease, Disease stage
View SamplesThe Hypoxia-Inducible Factors induce the expression of the histone demethylases JMJD1A (KDM3A) and JMJD2B (KDM4B), linking the hypoxic tumor microenvironment to epigenetic mechanisms that may foster tumor progression. Using transcript profiling, we have identified genes that are regulated by JMJD1A and JMJD2B in both normoxic and hypoxic conditions in SKOV3ip.1 ovarian cancer cells.
The histone demethylase KDM4B regulates peritoneal seeding of ovarian cancer.
Specimen part, Cell line
View SamplesThe human kinome is incolved in multiple function in the life cycle of cells, and ther differntial expression in cacner suggests that protein kinases play an important role in tumor progression and proliferation.
No associated publication
Specimen part
View Samples