PURPOSE:
Unique gene expression profile based on pathologic response in epithelial ovarian cancer.
No sample metadata fields
View SamplesWe performed a time-course microarray experiment to define the transcriptional response to carboplatin in vitro, and to correlate this with clinical outcome in epithelial ovarian cancer (EOC). RNA was isolated from carboplatin and control-treated 36M2 ovarian cancer cells at several time points, followed by oligonucleotide microarray hybridization. Carboplatin induced changes in gene expression were assessed at the single gene as well as at the pathway level. Clinical validation was performed in publicly available microarray datasets using disease free and overall survival endpoints.
Carboplatin-induced gene expression changes in vitro are prognostic of survival in epithelial ovarian cancer.
No sample metadata fields
View SamplesA gene expression profile of BRCAness was defined in publicly available expression data of 61 patients with epithelial ovarian cancer (34 patients with BRCA-1 or BRCA-2 mutations and 27 patients with sporadic disease). This dataset is publicly available at http://jnci.oxfordjournals.org/cgi/content/full/94/13/990/DC1
Gene expression profile of BRCAness that correlates with responsiveness to chemotherapy and with outcome in patients with epithelial ovarian cancer.
Age, Disease stage
View SamplesPrevious studies identified a role for latent herpesvirus infection in cross-protection to infection and exacerbation of chronic inflammatory diseases. Here, we compared the gene expression signature from livers, spleens and brains of mice infected with wild-type gammaherpesvirus 68 (MHV68), a mutant virus defective in the establishment of latency (ORF73.stop) or mockulum. We identified over 600 genes differentially expressed in organs of mice latently infected with MHV68 and found distinct sets of genes linked to different pathways were altered in spleen compared to liver. Several of the most differentially expressed latency-specific genes (e.g. IFN, Cxcl9, Ccl5) are associated with known latency-specific phenotypes.
Latent gammaherpesvirus 68 infection induces distinct transcriptional changes in different organs.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Transcriptome-wide miR-155 binding map reveals widespread noncanonical microRNA targeting.
Specimen part
View SamplesmicroRNAs (miRNAs) are essential components of gene regulation, but identification of miRNA targets remains a major challenge. Most target prediction and discovery relies on perfect complementarity of the miRNA seed to the 3 untranslated region (UTR). However, it is unclear to what extent miRNAs target sites without seed matches. Here, we performed a transcriptome-wide identification of the endogenous targets of a single miRNAmiR-155in a genetically controlled manner. We found that approximately forty percent of miR-155-dependent Argonaute binding occurs at sites without perfect seed matches. The majority of these non-canonical sites feature extensive complementarity to the miRNA seed with one mismatch. These non-canonical sites confer regulation of gene expression albeit less potently than canonical sites. Thus, non-canonical miRNA binding sites are widespread, often contain seed-like motifs, and can regulate gene expression, generating a continuum of targeting and regulation.
Transcriptome-wide miR-155 binding map reveals widespread noncanonical microRNA targeting.
Specimen part
View SamplesThe goal of this study is to characterize the human immune responses to the live attenuated Herpes zoster vaccine Zostavax, to understand the molecular and cellular mechanisms that lead to antibody production and T cell induction, and to understand the difference between young and elderly healthy adults. The overall data collection included antigen specific assays, flow cytometric profiling of innate and adaptive cell populations, measurement of serum cytokines, and transcriptomic and metabolomics signatures. Zostavax induced robust antigen-specific antibody responses, and significant T cell responses. A number of gene pathways were upregulated after vaccination. Using our previously developed blood transcription modules, we also identified transcriptomic correlates to antibody response. Furthermore, this study revealed strong association between PBMC transcriptomics and plasma metabolomics. Integrative analysis of orthogonal datasets from metabolomics, transcriptomic and immune profiling facilitated a temporal reconstruction of Zostavax induced biological networks culminating in antibody responses , and the delineation of novel molecular correlates of vaccine immunity.
Metabolic Phenotypes of Response to Vaccination in Humans.
Sex, Age, Specimen part, Race, Subject
View SamplesPurpose: Primary cutaneous squamous cell carcinoma (SCC) can be an invasive cancer in skin and has the potential to metastasize. We aimed to define the cancer related molecular changes that distinguish non-invasive from invasive SCC.
Gene expression profiling of the leading edge of cutaneous squamous cell carcinoma: IL-24-driven MMP-7.
Subject
View SamplesThe import of nuclear transcribed RNAs into mitochondria is an emerging area that presents tremendous opportunity to develop human metabolic therapeutics. However, our knowledge base is quite limited. Much remains to be discovered regarding specific RNA localization and mechanisms of import. In order to identify novel RNAs imported into mitochondria, all RNAs within the mitochondria were characterized using next generation sequencing technology. Several nuclear transcribed RNAs were found within mitochondrial RNA samples, including nuclear ribosomal RNAs, gamma satellite RNA and VL30 retroelement RNA. The presence of these RNAs within mitochondria coupled with RNA sequencing data (RNAseq) from other laboratories investigating mitochondrial RNA processing, lead us to hypothesize that nuclease treatment of mitoplasts is insufficient for removing contaminating cytoplasmic RNAs. In contrast to traditional methodology, mitochondrial import was evaluated by qRT-PCR after stepwise removal of the outer mitochondrial membrane and subsequent lysis of mitochondria. This allowed identification of RNAs lost from the mitochondria with the same kinetics as mtDNA-transcribed RNAs. This approach provided an improved evaluation of nuclear RNA enrichment within mitochondrial membranes in order to characterize nuclease protection and mitochondrial import and identify false-positive detection errors. qRT-PCR results confirmed the presence of VL30 retroelement RNA within mitochondria and question the hypothesis that the RNA component of RNase P is imported. These results illustrate a reliable approach for evaluating the presence of RNAs within mitochondria and open new avenues of investigation relating to mitochondrial RNA biology and in targeting mitochondrial based therapeutics. Overall design: RNA isolated from purified mitoplasts was sequenced on an Illumina Genome Analyzer IIx
Mitochondrially-imported RNA in drug discovery.
No sample metadata fields
View SamplesCellular and molecular differences between DNs and CMNs are not completely understood. Using cDNA microarray, quantitative RT-PCR, and immunohistochemistry, we molecularly characterized DNs and analyzed the difference between DNs and CMNs.
Discrimination of Dysplastic Nevi from Common Melanocytic Nevi by Cellular and Molecular Criteria.
Specimen part
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