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Expression data from ZBP1-expression and ZBP1 nonexpression breast tumors.

ABSTRACT: ZBP1/IMP1 is an mRNA binding protein that post-transcriptionally regulates the expression of a handful mRNAs, implicated in maintaining cell polarity and adhesion. We have previously shown that ZBP1 was able to inhibit proliferation and invasiveness of breast carcinoma cells in vitro. In the current study, we utilized orthotopic breast fat pad xenografts to further investigate the ZBP1-mediated functions in breast tumorigenesis and metastasis in vivo. We used microarrays to identify important gene for breast tumor growth and metastasis in response to ZBP1 expression

ORGANISM(S): Mus musculus Homo sapiens

PROVIDER: GSE62638 | GEO | 2014/10/24

SECONDARY ACCESSION(S): PRJNA264609

REPOSITORIES: GEO

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Expression data from ZBP1-expression and ZBP1 nonexpression breast tumors.

Project description:ZBP1/IMP1 is an mRNA binding protein that post-transcriptionally regulates the expression of a handful mRNAs, implicated in maintaining cell polarity and adhesion. We have previously shown that ZBP1 was able to inhibit proliferation and invasiveness of breast carcinoma cells in vitro. In the current study, we utilized orthotopic breast fat pad xenografts to further investigate the ZBP1-mediated functions in breast tumorigenesis and metastasis in vivo. We used microarrays to identify important gene for breast tumor growth and metastasis in response to ZBP1 expression Total RNA was extracted from breast tumor generated from ZBP1-expression and ZBP1-nonexpression MDA231 cells and used for hybridization on Affymetrix microarrays. We sought to obtain gene expression profiles from the individual tumors and identify what genes are up-regulated or down-regulated in the presence of ZBP1. The microarray experiments and data analysis were performed in 'Gene Company Limited' in Senzheng, China. G-10 and G-13, Tumors generated from MDA231/GFP cells; I-5 and I-6, tumors generated from MDA231/ZBP1-GFP cells.

2014-10-24 | E-GEOD-62638 | biostudies-arrayexpress

Long Noncoding RNA Expression profiling of IMP1-expression and IMP1 nonexpression MDA231 Cells

Project description:ZBP1/IMP1 is a RNA binding protein that post-transcriptionally regulates the expression of a handful mRNAs, implicated in maintaining cell polarity and adhesion. We have previously shown that ZBP1 was able to inhibit proliferation and invasiveness of breast carcinoma cells in vitro. To determine important LncRNA for breast tumor growth and metastasis in response to IMP1 expression, LncRNA expression data were obtained from, and compared between the breast cancer cell line MDA231-IMP1 and MDA231/GFP.

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Project description:The RNA editing enzyme ADAR1 is essential for suppression of innate immune activation and pathology caused by aberrant recognition of self-RNA, a role it carries out by disrupting the duplex structure of endogenous double-stranded RNA species. A point mutation in the Z-nucleic-acid binding domain (ZBD) of ADAR1 is associated with severe autoinflammatory disease. ZBP1 is the only other ZBD-containing mammalian protein and its activation can trigger both cell death and transcriptional responses via the kinases RIPK1 and RIPK3, and the protease caspase-8. Here, we show that the pathology caused by ADAR1 ZBD mutation is driven by activation of ZBP1. We found that ablation of ZBP1 fully rescued the overt pathology caused by ADAR1 mutation, without reversing the underlying inflammatory program caused by this mutation. While loss of RIPK3 partially phenocopied the protective effects of ZBP1 ablation, combined deletion of caspase-8 and RIPK3, or of caspase-8 and MLKL, unexpectedly exacerbated the pathogenic effects of ADAR1 mutation. These findings indicate that ADAR1 is a negative regulator of sterile ZBP1 activation, and that ZBP1-dependent signaling underlies the autoinflammatory pathology caused by mutation of ADAR1.

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ADAR1 restricts ZBP1–mediated immune response and PANoptosis to promote tumorigenesis

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Project description:Whole transcriptome of ZBP1-depleted myeloma cells was analysed using a high-throughput RNA-seq approach. ZBP1 was depleted by 2 different shRNAs in MM1.S and H929 cells, and total RNA was isolated on day 4 post-lentiviral transduction. Poly A-tail enriched RNA was sequenced and the analysis of commonly regulated genes by both shRNAs from 2 independent experiments revealed that ZBP1 regulates genes that are involved in cell cycle regulation.

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