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Genes Differentially Expressed as a Result of Enforced Pokemon Expression in MCF-7 cell

ABSTRACT: Pokmeon is an oncogenic transcription factor involved in cell growth, differentiation, and oncogenesis,but its regulatory network in breast cancer cells remians elusive . We used microarray to determine the down stream target genes of pokemon by using the MCF-7 cell line with stable ectopic expression of pokemon. The MCF-7 cell clones with high ectopic expression of pokemon were screened by the Hygromycin B,and the control cell line was also obtained by introducing empty vector .Both the RNA were extracted and hybridized with 22k cDNA spots from CapitalBio, Chin

ORGANISM(S): Homo sapiens

SUBMITTER: Zu Xuyu

PROVIDER: S-ECPF-GEOD-27442 | biostudies-other |

REPOSITORIES: biostudies-other

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Genes Differentially Expressed as a Result of Enforced Pokemon Expression in MCF-7 cell

2011-02-25 | GSE27442 | GEO

Genes Differentially Expressed as a Result of Enforced Pokemon Expression in MCF-7 cell

Project description:Pokmeon is an oncogenic transcription factor involved in cell growth, differentiation, and oncogenesis,but its regulatory network in breast cancer cells remians elusive . We used microarray to determine the down stream target genes of pokemon by using the MCF-7 cell line with stable ectopic expression of pokemon. The MCF-7 cell clones with high ectopic expression of pokemon were screened by the Hygromycin B,and the control cell line was also obtained by introducing empty vector .Both the RNA were extracted and hybridized with 22k cDNA spots from CapitalBio, Chin

2011-02-25 | E-GEOD-27442 | biostudies-arrayexpress

Genes Differentially Expressed as a Result of Enforced EDAG Expression In 32D Cells

2010-07-01 | GSE18862 | GEO

Genes Differentially Expressed as a Result of Enforced EDAG Expression In 32D Cells

Project description:Erythroid differentiation-associated gene (EDAG), a hematopoietic tissue-specific transcription regulator, plays a key role in maintaining the homeostasis of hematopoietic lineage commitment. However, the mechanism and genes regulated by EDAG remain unknown.Here, we performed genome-wide parallel expression analyses of 32D cells stably transfected with EDAG. Total RNA from the control 32D cells and 32D/EDAG cells were used to generate target cDNA, and then hybridized to 36k Mouse Genome Array Genechips, representing about 25000 characterized murine genes.

2010-07-01 | E-GEOD-18862 | biostudies-arrayexpress

Identification of genes differentially expressed as result of adenovirus type 5- and adenovirus type 12-transformation.

Project description:Cells transformed by human adenoviruses (Ad) exhibit differential capacities to induce tumours in immunocompetent rodents; for example, Ad12-transformed rodent cells are oncogenic whereas Ad5-transformed cells are not. The E1A gene determines oncogenic phenotype, is a transcriptional regulator and dysregulates host cell gene expression, a key factor in both cellular transformation and oncogenesis. To reveal differences in gene expression between cells transformed with oncogenic and non-oncogenic adenoviruses we have performed comparative analysis of transcript profiles with the aim of identifying candidate genes involved in the process of neoplastic transformation.Analysis of microarray data revealed that a total of 232 genes were differentially expressed in Ad12 E1- or Ad5 E1-transformed BRK cells compared to untransformed baby rat kidney (BRK) cells. Gene information was available for 193 transcripts and using gene ontology (GO) classifications and literature searches it was possible to assign known or suggested functions to 166 of these identified genes. A subset of differentially-expressed genes from the microarray was further examined by real-time PCR and Western blotting using BRK cells immortalised by Ad12 E1A or Ad5 E1A in addition to Ad12 E1- or Ad5 E1-transformed BRK cells. Up-regulation of RelA and significant dysregulation of collagen type I mRNA transcripts and proteins were found in Ad-transformed cells.These results suggest that a complex web of cellular pathways become altered in Ad-transformed cells and that Ad E1A is sufficient for the observed dysregulation. Further work will focus on investigating which splice variant of Ad E1A is responsible for the observed dysregulation at the pathway level, and the mechanisms of E1A-mediated transcriptional regulation.

| S-EPMC2651901 | biostudies-literature

Identification of differentially expressed genes in cutaneous squamous cell carcinoma by microarray expression profiling.

Project description:BackgroundCarcinogenesis is a multi-step process indicated by several genes up- or down-regulated during tumor progression. This study examined and identified differentially expressed genes in cutaneous squamous cell carcinoma (SCC).ResultsThree different biopsies of 5 immunosuppressed organ-transplanted recipients each normal skin (all were pooled), actinic keratosis (AK) (two were pooled), and invasive SCC and additionally 5 normal skin tissues from immunocompetent patients were analyzed. Thus, total RNA of 15 specimens were used for hybridization with Affymetrix HG-U133A microarray technology containing 22,283 genes. Data analyses were performed by prediction analysis of microarrays using nearest shrunken centroids with the threshold 3.5 and ANOVA analysis was independently performed in order to identify differentially expressed genes (p < 0.05). Verification of 13 up- or down-regulated genes was performed by quantitative real-time reverse transcription (RT)-PCR and genes were additionally confirmed by sequencing. Broad coherent patterns in normal skin vs. AK and SCC were observed for 118 genes.ConclusionThe majority of identified differentially expressed genes in cutaneous SCC were previously not described.

| S-EPMC1569867 | biostudies-literature

Differentially expressed genes between MCF-7 and MCF-7-14 cells

Project description:We investigated the differentially expressed genes between MCF-7 and MCF-7-14, and estimated the similarities of expression profiles between MCF-7-14 and MDA-MB-231. We identified genes differentially expressed between non-invasive/non-metastatic and invasive/metastatic breast cancer cells.

2009-11-06 | GSE18903 | GEO

Detecting multivariate differentially expressed genes.

Project description:BACKGROUND: Gene expression is governed by complex networks, and differences in expression patterns between distinct biological conditions may therefore be complex and multivariate in nature. Yet, current statistical methods for detecting differential expression merely consider the univariate difference in expression level of each gene in isolation, thus potentially neglecting many genes of biological importance. RESULTS: We have developed a novel algorithm for detecting multivariate expression patterns, named Recursive Independence Test (RIT). This algorithm generalizes differential expression testing to more complex expression patterns, while still including genes found by the univariate approach. We prove that RIT is consistent and controls error rates for small sample sizes. Simulation studies confirm that RIT offers more power than univariate differential expression analysis when multivariate effects are present. We apply RIT to gene expression data sets from diabetes and cancer studies, revealing several putative disease genes that were not detected by univariate differential expression analysis. CONCLUSION: The proposed RIT algorithm increases the power of gene expression analysis by considering multivariate effects while retaining error rate control, and may be useful when conventional differential expression tests yield few findings.

| S-EPMC1885271 | biostudies-literature

Identification of differentially expressed genes in non-small cell lung cancer.

Project description:Lung cancer is the most common malignant tumor and the leading cause of cancer-related deaths worldwide. Because current treatments for advanced non-small cell lung cancer (NSCLC), the most prevalent lung cancer histological subtype, show limited efficacy, screening for tumor-associated biomarkers using bioinformatics reflects the hope to improve early diagnosis and prognosis assessment. In our study, a Gene Expression Omnibus dataset was analyzed to identify genes with prognostic significance in NSCLC. Upon comparison with matched normal tissues, 118 differentially expressed genes (DEGs) were identified in NSCLC, and their functions were explored through bioinformatics analyses. The most significantly upregulated DEGs were TOP2A, SLC2A1, TPX2, and ASPM, all of which were significantly associated with poor overall survival (OS). Further analysis revealed that TOP2A had prognostic significance in early-stage lung cancer patients, and its expression correlated with levels of immune cell infiltration, especially dendritic cells (DCs). Our study provides a dataset of potentially prognostic NSCLC biomarkers, and highlights TOP2A as a valuable survival biomarker to improve prediction of prognosis in NSCLC.

| S-EPMC6932904 | biostudies-literature

Genes Differentially Expressed as a result of Candida albicans SC5314 exposure to 10b

Project description:Azole resistance and varying degrees of cross-resistance to other members of the azole family in clinical isolates have been documented, which has necessitated additional and prolonged use of the antifungal agents available. 2-Amino-Nonyl-6-Methoxyl-Tetralin Muriate (10b), a novel chemical structural aminotetralin derivate, is synthesized as an antifungal agent and exibited strong antifungal activity. To further investigated the action mechanism, we used microarray analysis to investigate the genes expression profiles of C. albicans cells treated or untreated with 10b and found 957 genes were differentially expressed. Of them,457 showed a decrease in expression and 500 showed an increase in expression. 33 down-regulated genes were involved in glycolysis (e.g., PFK1, CDC19 and HXK2), fermentation (e.g., PDC11, ALD5 and ADH1) and respiratory electron transport chain (e.g., CBP3, COR1 and QCR8). 30 differentially expressed genes were found to relate to biofilm formation, filamentous or hyphal growth. It was noticed that striking up-regulation of SFL1 and marked down-regulation of YWP1 directly related to prevent C. albicans from changing its morphology from the yeast form to the hyphal. Two genes related to specifically hydrolyzing beta-1, 3 glucan (e.g., XOG1) and chitin (e.g., CHT1) were significantly increased. 40 overexpressed genes and 15 down-regulated genes were related to the lipid metabolic process. Of them, Eight were directly linked to ergosterol biosynthesis, including ERG2, ERG6 and ERG11. 99 genes related to translation were down-regulated following exposure to 10b, which account for 21.66% in down-regulated genes. This suggested that translation might be lower in SC5314 cells exposed to 10b than in control.

2011-05-11 | GSE19552 | GEO

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