Human rhinovirus and influenza virus infections of the upper airway lead to colds and the flu and can trigger exacerbations of lower airway diseases including asthma and chronic obstructive pulmonary disease. Despite modest advances in the diagnosis and treatment of infections by these viruses, novel diagnostic and therapeutic targets are still needed to differentiate between the cold and the flu, since the clinical course of influenza can be severe while that of rhinovirus is usually more mild.
A systems approach to understanding human rhinovirus and influenza virus infection.
Time
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Systems biology of interstitial lung diseases: integration of mRNA and microRNA expression changes.
Specimen part, Disease
View SamplesThe mechanisms and molecular pathways underlying interstitial lung diseases (ILDs) are poorly understood. Systems biology approaches were used to identify perturbed networks in these disease states to gain a better understanding of the underlying mechanisms of disease. Through profiling genes and miRNAs, we found subsets of genes and miRNAs that distinguish different disease stages, ILDs from controls, and idiopathic pulmonary fibrosis (IPF) from non-specific interstitial pneumonitis (NSIP). Traditional pathway analysis revealed several disease-associated modules involving genes from the TGF-beta, Wnt, focal adhesion and smooth muscle actin pathways that may be involved in advancing fibrosis.
Systems biology of interstitial lung diseases: integration of mRNA and microRNA expression changes.
Specimen part, Disease
View SamplesAutophagy is a starvation response that facilitates cell survival under metabolic stress and yet defects in autophagy promote tumorigenesis. While the role of understarvation is relatively clearer, its mechanistic role in tumorigenesis is poorly understood. We show that defective autophagy promotes protein damage and accumulation of p62, a marker for protein damage accumulation that is cleared through autophagy pathway. The failure to eliminate p62 in autophagy-defective cells, leads to deregulation of cell signalling and gene expression and ultimately promotes tumorigenesis. Thus defective-autophagy is a mechanism for p62 accumulation commonly observed in human tumors.
Autophagy suppresses tumorigenesis through elimination of p62.
Cell line
View SamplesThe reduced folate carrier (RFC1) is an integral membrane protein and facilitative anion exchanger that mediates delivery of 5-methyltetrahydrofolate into mammalian cells. Adequate maternal-fetal transport of folate is necessary for normal embryogenesis. Targeted inactivation of the murine RFC1 gene results in post-implantation embryo lethality, but daily folic acid supplementation of pregnant dams prolongs survival of homozygous embryos until mid-gestation. At E10.5 RFC1-/- embryos are developmentally delayed relative to wildtype littermates, have multiple malformations, including neural tube defects, and die due to failure of chorioallantoic fusion. The mesoderm is sparse and disorganized, and there is a marked absence of erythrocytes in yolk sac blood islands. Affymetrix microarray analysis and quantitative RT-PCR validation of the relative gene expression profiles in E9.5 RFC1-/- vs. RFC1+/+ embryos indicates a dramatic downregulation of multiple genes involved in erythropoiesis, and upregulation of several genes that form the cubilin-megalin multiligand endocytic receptor complex. Megalin protein expression disappears from the visceral yolk sac of RFC1-/- embryos, and cubilin protein is widely misexpressed. Inactivation of RFC1 impacts the expression of several ligands and interacting proteins in the cubilin-amnionless-megalin complex that are involved in the maternal-fetal transport of folate, vitamin B12, and other nutrients, lipids and morphogens required for normal embryogenesis.
Microarray analysis of E9.5 reduced folate carrier (RFC1; Slc19a1) knockout embryos reveals altered expression of genes in the cubilin-megalin multiligand endocytic receptor complex.
No sample metadata fields
View SamplesHuman peripheral blood mononuclear cells were cultured in presence of H37Ra strain at 37oC, 5%CO2. Cellular aggregates were collected at 24h, and RNA extracted and hybridized to Affymetrix microarrays (HG-U133). Raw data from microarray experiments was analyzed with dCHIP and SAM programs to determine the significance of changes at the biological context.
Microarray analysis of the in vitro granulomatous response to Mycobacterium tuberculosis H37Ra.
Specimen part
View Sampleswe analyzed the gene expression profiles of Mat-Lylu cell lines (in duplicate) compared to G cell lines (in duplicate) using Affymetrix tools and dChip software. The objective was to find metastasis-associated genes in prostate cancer, using this in vitro model.
DNA microarray analysis reveals metastasis-associated genes in rat prostate cancer cell lines.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The epigenetic processes of meiosis in male mice are broadly affected by the widely used herbicide atrazine.
Specimen part
View SamplesEnvironmental factors such as pesticides are widely used in the agriculture of many countries and their negative impact on human health and fertility are largely unknown. There is a rapidly growing body of evidence that human reproductive health is negatively affected by the various environmental factors, including life style and exposure to the chemical compounds such as certain drugs and pesticides. Sexually reproducing organisms produce haploid gametes via a process called meiosis. Meiosis is dependent on androgen action within the testis. Pesticides and herbicides interfere with natural hormones system and are considered to be endocrine disruptors. We hypothesize that atrazine (ATZ), a herbicide used globally, adversely affects meiosis. To test this idea we used the mouse as a model organism. Mice were treated three weeks with atrazine in drinking water at concentration of 100 mg/l. To assess the molecular mechanisms of effects of ATZ on spermatogenesis we performed comparative analysis of genes expression by using Affymetrix microarray by using three biological testis samples from ATZ treated and control mice. Using a fold-change cutoff value of 1.5 and p value <0.05 (statistical Limma test (linear models test for microarray data)), we identified 51 genes that were differentially expressed in ATZ treated mice.
The epigenetic processes of meiosis in male mice are broadly affected by the widely used herbicide atrazine.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
C9ORF72 GGGGCC Expanded Repeats Produce Splicing Dysregulation which Correlates with Disease Severity in Amyotrophic Lateral Sclerosis.
Specimen part, Subject
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