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The function of ERRalpha in viral infection

ABSTRACT: To explore the function of ERRalpha in viral infection, we compared the cDNA expression profile of ERRalpha knockdown 293T cells and control 293T cells. The cells infected with VSV for 12 h or left uninfected were collected and RNA was extracted by Trizol. Viral infection induced gene expression in ERRalpha knockdown 293T cells or control 293T cells were measured at 0 and 12 hours.

ORGANISM(S): Homo sapiens

SUBMITTER: Xiang He

PROVIDER: E-GEOD-69661 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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The function of ERRalpha in viral infection

Project description:To explore the function of ERRalpha in viral infection, we compared the cDNA expression profile of ERRalpha knockdown 293T cells and control 293T cells. The cells infected with VSV for 12 h or left uninfected were collected and RNA was extracted by Trizol.

2015-06-09 | GSE69661 | GEO

ERRalpha mediates metabolic adaptations that drive lapatinib resistance in breast cancer (ERRalpha binding profiles in breast cancer cells by ChIP-seq)

Project description:Ablation of ERRalpha significantly delays ERBB2-induced mammary tumorigenesis and ERRalpha regulates genes of the ERBB2 amplicon. To further investigate the relationship between ERRalpha activity and RTK signaling, we mapped ERRalpha binding sites in SKBr3 cells upon EGF treatment or heregulin treatment. Inhibition of ERBB2 signaling using the RTK inhibitor lapatinib impacts on ERRalpha stability, while cells resistant to lapatinib treatment exhibit restored ERRalpha expression. We therefore mapped ERRalpha binding sites in parental (sensitive) cells (pSKBr3) as well as in lapatinib-resistant cells (LRSKBr3).

2016-06-15 | GSE81651 | GEO

Generation of neural progenitor cells by chemical cocktails and hypoxia

Project description:Neural progenitor cells (NPCs) can be induced from somatic cells by defined factors. Here we report that NPCs can be generated from mouse embryonic fibroblasts by a chemical cocktail, namely VCR (V, VPA, an inhibitor of HDACs; C, CHIR99021, an inhibitor of GSK-3 kinases and R, Repsox, an inhibitor of TGF-β pathways), under a physiological hypoxic condition. These chemical-induced NPCs (ciNPCs) resemble mouse brain-derived NPCs regarding their proliferative and self-renewing abilities, gene expression profiles, and multipotency for different neuroectodermal lineages in vitro and in vivo. Further experiments reveal that alternative cocktails with inhibitors of histone deacetylation, glycogen synthase kinase, and TGF-β pathways show similar efficacies for ciNPC induction. Moreover, ciNPCs can also be induced from mouse tail-tip fibroblasts and human urinary cells with the same chemical cocktail VCR. Thus our study demonstrates that lineage-specific conversion of somatic cells to NPCs could be achieved by chemical cocktails without introducing exogenous factors. To access the exact identity of ciNPCs, we extracted mRNA from mouse brain-derived NPCs (as control NPCs), MEFs, ciNPCs at passage 5 and passage 13 and compared the global gene expression patterns of these cells by microarray analysis.

2015-04-27 | E-GEOD-68311 | biostudies-arrayexpress

UNC50 prompts G1/S transition and proliferation in HCC through regulation of epidermal growth factor receptor trafficking

Project description:Background: UNC50 has long been recognized as a Golgi apparatus protein in yeast, and is involved in nicotinic receptor trafficking in Caenorhabditis elegans, but little is known about UNC50 gene function in human biology despite it being conserved from yeast to high eukaryotes. Objectives: We investigated the relation between UNC50 and human hepatocellular carcinoma (HCC) and the potential mechanisms underlying HCC development. Methods: UNC50 mRNA expression patterns in 12 HCC and adjacent non-cancerous tissues determined using northern blotting were confirmed by real-time PCR in another 44 paired tissues. Microarray experiments were used to screen for global effects of UNC50 knockdown in the Hep3B cell line, and were confirmed by real-time PCR, western blotting, flow cytometry, and tetrazolium assay in both UNC50 overexpression and knockdown Hep3B cells. Results: UNC50 expression levels were upregulated in HCC tissues in comparison with the adjacent non-cancerous tissues. UNC50 knockdown reduced mRNA levels of the downstream targets of the epidermal growth factor receptor (EGFR) pathway: cyclin D1 (CCND1), EGF, matrix metalloproteinase-7 (MMP7), aldose reductase-like 1 (AKR1B10), cell surfaceM-bM-^@M-^Sassociated mucin 1 (MUC1), and gastrin (GAST). Moreover, UNC50 influenced EGF, inducing cell cycle entry by affecting cell surface EGFR amounts. Conclusions: UNC50 is a potential oncogene that promotes HCC progression by affecting the EGFR pathway. To gain insight into the role UNC50 plays in HCC progression, we used microarray analyses to identify indirect evidence of UNC50 gene function via the knockdown strategy in Hep3B cells. Hep3B cells transfected with the shRNA expression plasmids shR-467, shR-554, shR-749, and shR-MOCK were purified with 1ug/ml puromycin, and the total RNA from each cell was extracted and analyzed with oligo microarrays.

2014-11-17 | E-GEOD-63322 | biostudies-arrayexpress

Identification of TEAD4 target genes in colorectal cancer cells

Project description:We have identified TEAD4 as a key prognosis factor in colorectal cancer. To elucidate the potentail mechanism and function of TEAD4 in colorectal caner, we generated two stable cell lines expressing different shRNA targeting TEAD4 in the mesenchymal-like LoVo cells and the differential genes were detected by microarray. LoVo colorectal cancer cells stably expressing pLKO.1 control shRNA or sh1_shTEAD4 or sh2_shTEAD4

2014-01-01 | E-GEOD-53063 | biostudies-arrayexpress

Genome-wide profiling of long noncoding RNA expression patterns in chemoresistant breast cancer cells

Project description:Long non-coding RNAs (lncRNAs) are involved in cancer progression. In this study, the lncRNA profiling were analyzed in chemoresistant and sensitive breast cancer cells. We found a group of dysregulated lncRNAs in chemoresistant cells. Expression of dysregulated lncRNAs are correlated with dysregulated mRNAs, and enriched in GO and KEGG pathways related with cancer progression and chemoresistance development. Within those lncRNA-mRNA interactions, some lncRNAs may cis-regulate neighboring protein coding genes and involved in chemoresistance. The lncRNA NONHSAT028712 was then validated to regulate nearby CDK2 and interfere with cell cycle and chemoresistance. Furthermore, we identified another group of lncRNAs trans-regulated gene expression via interacting with different transcription factors (TF). Whereby NONHSAT057282 and NONHSAG023333 was found to modulate chemoresistance and most likely interacted with ELF1 and E2F1 respectively. In conclusion, this study reported for the first time the lncRNA expression patterns in chemoresistant breast cancer cells, and provided a group of novel lncRNA targets in mediating chemoresistance development in both cis- and trans- action mode. MCF-7/ADM replication 3 times, MCF-7/WT replication 3 times

2016-05-28 | E-GEOD-81971 | biostudies-arrayexpress

ERRalpha mediates metabolic adaptations that drive lapatinib resistance in breast cancer (gene expression profiles)

Project description:Ablation of ERRalpha significantly delays ERBB2-induced mammary tumorigenesis and ERRalpha regulates genes of the ERBB2 amplicon. To further investigate the relationship between ERRalpha activity and RTK signaling, we depleted ERRalpha in SKBr3 cells upon serum starvation, EGF treatment or heregulin treatment. Inhibition of ERBB2 signaling using the RTK inhibitor lapatinib impacts on ERRalpha stability. Since we have shown that the development of lapatinib-resistance restaures the expression of ERRalpha in breast cancer cells, we performed depletion of ERRalpha in SKBr3 cells that have developped resistance to lapatinib treatment in order to identify a potential reprogramming of ERRa transcriptional activity associated to lapatinib resistance,

2016-06-15 | GSE81546 | GEO

ERRalpha mediates metabolic adaptations that drive lapatinib resistance in breast cancer (ERRalpha binding profiles in breast cancer cells by ChIP-seq)

2016-06-15 | E-GEOD-81651 | biostudies-arrayexpress

ARPE-19_adriamycin_gene_expression

Project description:This study compared the gene expression change of ARPE-19 cells before and after adriamycin treatment ARPE-19 cells were treated with 1Î¼M adriamycin for 24 h compared with control

2016-03-01 | E-GEOD-78765 | biostudies-arrayexpress

The anti-tumor core molecular targets of TSA in cholangiocarcinoma

Project description:Firstly our study demonstrated that TSA can inhibits cell proliferation, induces cell apoptosis and cell cycle arrest in CCA cell lines in vitro. To identify the target transcripts of TSA to suppress CCA tumorigenesis, mRNA expression profiles were determined by microarray analysis. We chose TFK-1 cells treated by TSA in indicated concentration (IC50) 48 hours for the microarray. Then we found out TACC3 was downregulated, and demonstrated that TACC3 was high expression and may played a role as an target of TSA in inhibiting CCA cells proliferation and migration via in vitro and vivo experiments. We chose TFK-1 cells treated by TSA in indicated concentration (IC50) 48 hours as the experiment sample and without TSA as the control sample to do this microarray analysis for three times. Then regulated genes would be tested to investigate the potential roles in CCA tumorigenesis,

2016-03-15 | E-GEOD-78867 | biostudies-arrayexpress

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