Topical corticosteroids and calcineurin inhibitors are well known treatments of atopic dermatitis (AD), but differ in their efficacy and side effects. A study in AD patients has demonstrated that betamethasone valerate (BM) though clinically more efficient impaired skin barrier repair in contrast to pimecrolimus. Objective: The present study elucidates the mode of action of topical BM and pimecrolimus cream in AD.
Gene expression is differently affected by pimecrolimus and betamethasone in lesional skin of atopic dermatitis.
Specimen part
View SamplesThe MUC1 oncoprotein is aberrantly overexpressed in diverse human malignancies including breast and lung cancer. Although MUC1 modulates the activity of several transcription factors, there is no information regarding the effects of MUC1 on global gene expression patterns and the potential role of MUC1-induced genes in predicting outcome for cancer patients. We have developed an experimental model of MUC1-induced transformation that has identified the activation of gene families involved in oncogenesis, angiogenesis and extracellular matrix remodeling. A set of experimentally-derived MUC1-induced genes associated with tumorigenesis was applied to the analysis of breast and lung adenocarcinoma cancer databases. A 35-gene MUC1-induced tumorigenesis signature (MTS) predicts significant decreases in both disease-free and overall survival in patients with breast (n = 295) and lung (n = 442) cancers. The data demonstrate that the MUC1 oncoprotein contributes to the regulation of genes that are highly predictive of clinical outcome in breast and lung cancer patients.
MUC1-induced alterations in a lipid metabolic gene network predict response of human breast cancers to tamoxifen treatment.
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STAT1 is overexpressed in tumors selected for radioresistance and confers protection from radiation in transduced sensitive cells.
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View SamplesNu61, a radiation-resistant human tumor xenograft, was selected from a parental radiosensitive tumor SCC-61 by eight serial cycles of passage in athymic nude mice and in vivo irradiation.
STAT1 is overexpressed in tumors selected for radioresistance and confers protection from radiation in transduced sensitive cells.
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View SamplesNu61, a radiation-resistant human tumor xenograft, was selected from a parental radiosensitive tumor SCC-61 by eight serial cycles of passage in athymic nude mice and in vivo irradiation.
STAT1 is overexpressed in tumors selected for radioresistance and confers protection from radiation in transduced sensitive cells.
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View SamplesNu61, a radiation-resistant human tumor xenograft, was selected from a parental radiosensitive tumor SCC-61 by eight serial cycles of passage in athymic nude mice and in vivo irradiation.
STAT1 is overexpressed in tumors selected for radioresistance and confers protection from radiation in transduced sensitive cells.
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View SamplesGene expression has been proposed as an intermediate phenotype that can increase power in complex trait gene-mapping studies. Psoriasis, an immune-mediated, inflammatory and hyperproliferative disease of the skin and joints, provides an ideal model system to evaluate this paradigm, as conclusive evidence demonstrates that psoriasis has a genetic basis and the disease tissue is readily accessible.
Genome-wide scan reveals association of psoriasis with IL-23 and NF-kappaB pathways.
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View SamplesThe murine model of Lyme disease provides a unique opportunity to study the localized host response to similar stimulus, B. burgdorferi, in the joints of mice destined to develop severe arthritis (C3H) or mild disease (C57BL/6). Pathways associated with the response to infection and the development of Lyme arthritis were identified by global gene expression patterns using oligonucleotide microarrays. A robust induction of IFN responsive genes was observed in severely arthritic C3H mice at one week of infection, which was absent from mildly arthritic C57BL/6 mice. In contrast, infected C57BL/6 mice displayed a novel expression profile characterized by genes involved in epidermal differentiation and wound repair, which were decreased in the joints of C3H mice. These expression patterns were associated with disease state rather than inherent differences between C3H and C57BL/6 mice, as C57BL/6-IL10-/- mice infected with B. burgdorferi develop more severe arthritis that C57BL/6 mice and displayed an early gene expression profile similar to C3H mice. Gene expression profiles at two and four weeks post infection revealed a common response of all strains that was likely to be important for the host defense to B. burgdorferi and mediated by NF-kB-dependent signaling. The gene expression profiles identified in this study add to the current understanding of the host response to B. burgdorferi and identify two novel pathways that may be involved in regulating the severity of Lyme arthritis.
Gene expression profiling reveals unique pathways associated with differential severity of lyme arthritis.
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View SamplesBackground: Recent characterization of the transcriptional landscape of cell lines and whole tissues has suggested widespread transcription of the genome, including loci that produce regulatory non-coding RNAs that function within the nucleus. Methods: Here, we have defined the nuclear transcriptional landscape of the three major cellular divisions of the nervous system using flow sorting of genetically labeled nuclei from bacTRAP mouse lines followed by characterization the unique expression of coding, non-coding and intergenic RNAs in the mature mouse brain with RNAseq, and validation with independent methods. Results: Our findings reveal diverse expression across the cell-types of all classes of RNAs, including long non-coding RNAs - several of which were confirmed as highly enriched in the nuclei of specific cell-types using anatomical methods. Finally, we also discovered several examples of cell-type specific expression of tandem gene fusions, and report the first cell-type specific expression of circular RNAs, notably a neuron specific and nuclear enriched RNA arising from the gene Hnrnpu. Conclusion: These non-coding RNA expression data should provide an important context for studies evaluating the function of a variety of ncRNA in the nervous system. Overall design: Three to four independent replicate samples (each from one mouse) were collected for each of three sample types: Neuronal nuclear RNA, Astrocyte nuclear RNA, Oligodendrocyte nuclear RNA. Controls include low-coverage presorted nuclear RNA from each mouse.
A Comprehensive Analysis of Cell Type-Specific Nuclear RNA From Neurons and Glia of the Brain.
Sex, Specimen part, Subject
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Krüppel-like factor 4 (KLF4) inactivation in chronic lymphocytic leukemia correlates with promoter DNA-methylation and can be reversed by inhibition of NOTCH signaling.
Sex
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