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Role of HIP1 in HIPPI mediated transcription regulation in HeLa cells

ABSTRACT: Nuclear entry of transcription factor HIPPI is mediated by its interacting partner Huntingtin Interacting Protein 1 (HIP1), a nuclear localization signal containing nucleo-cytoplasmic shuttling protein. In oredr to investigate the role of HIP1 in HIPPI mediated transcriptional regulation in cell, here we performed microarray experiments using stable HIP1 knocked down HeLa cells (Hip1Si) exogenously expressing Green fluorescent protein tagged HIPPI.

ORGANISM(S): Homo sapiens

PROVIDER: GSE26116 | GEO | 2011/09/21

SECONDARY ACCESSION(S): PRJNA142301

REPOSITORIES: GEO

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Role of HIP1 in HIPPI mediated transcription regulation in HeLa cells

Project description:Nuclear entry of transcription factor HIPPI is mediated by its interacting partner Huntingtin Interacting Protein 1 (HIP1), a nuclear localization signal containing nucleo-cytoplasmic shuttling protein. In oredr to investigate the role of HIP1 in HIPPI mediated transcriptional regulation in cell, here we performed microarray experiments using stable HIP1 knocked down HeLa cells (Hip1Si) exogenously expressing Green fluorescent protein tagged HIPPI. Total RNA extracted from HIP1 knocked down HeLa cells (Hip1Si) transfected with empty GFP vector served as control and Total RNA extracted from Hip1Si cells transfected with GFP-Hippi construct served as test. Biological replicates: 4

2011-09-20 | E-GEOD-26116 | biostudies-arrayexpress

Regulation of transcription by HIPPI and its molecular partner HIP1

Project description:This SuperSeries is composed of the following subset Series: GSE26115: Regulation of transcription by HIP1 protein interactor (HIPPI) in HeLa cells GSE26116: Role of HIP1 in HIPPI mediated transcription regulation in HeLa cells Refer to individual Series

2011-09-20 | E-GEOD-26117 | biostudies-arrayexpress

Arabidopsis thaliana AGO1 immunoprecipitated small RNA from Col0 plants transformed with a transgene expressing wild-type or a nuclear localized form of AGO1 fused to GFP.

Project description:Plant microRNAs undergo stepwise-nuclear maturation before engaging cytosolic sequence-complementary transcripts in association with the silencing-effector protein ARGONAUTE1(AGO1). How plant miRNAs translocate to the cytosol remains mysterious as does their cellular loading site(s) into AGO1. Here, we show that the N-termini of plant AGO1s contain a nuclear-localization (NLS) and nuclear-export signal (NES), which, in Arabidopsis thaliana (At) enables AtAGO1 nucleo-cytosolic shuttling in a Leptomycin-B-inhibited manner, diagnostic of CRM1(Expo1)/NES-dependent nuclear export. Nuclear-only AtAGO1 contains the same 2’O-methylated miRNA cohort as its nucleo-cytosolic counterpart, but specifically interacts with the miRNA loading-chaperone HSP90. AtAGO1 nucleo-cytosolic shuttling is required for mature miRNA translocation and for miRNA-mediated silencing. We propose that plant miRNAs are matured, methylated, loaded into AGO1 in the nucleus, and exported cytoplasmically as AGO1:miRNA complexes in a CRM1(Expo1)/NES-dependent manner.

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HIP1 mediates prostate carcinogenesis and progression through STAT3 signalling

Project description:Overexpression of HIP1 has been associated with fibroblast transformation, increasing grades of prostate cancer (CaP), and biochemical relapse. Here we demonstrate cellular transformation and phenotypic effects of HIP1 overexpression in a benign prostate epithelial cell line to be dependent on STAT3 signalling. In vivo xenografts confirmed the cellular transformation phenotype and revealed serum GDF15 to be a marker of CaP in our model. STAT3 signalling was in part, dependent on HIP1 expression, in a highly invasive, metastatic and androgen receptor (AR) negative DU145 cell line, Immunohistochemistry of a large prostate tissue microarray (TMA) revealed increased HIP1 and reciprocal GDF15 expression to adversely affect outcome warranting further studies to assess HIP1 and GDF15 as biomarkers for detection and prognostication of CaP. Gene expression of PNT1a cells stably overexpressing HIP1 protein and LNCaP cells transiently overexpressing HIP1 protein were compared with their respective empty vector control cell lines using the illumina expression array platform. There were six biological replicates for each of the four different groups.

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Recurrent disruption of HIP1 identified in patients with epilepsy, learning difficulties, intellectual disability, and neurobehavioral abnormalities

Project description:We report 12 individuals from ten unrelated families with epilepsy, learning difficulties, intellectual disability, and neurobehavioral abnormalities, who segregated a microdeletion distally adjacent to the Williams-Beuren syndrome region. In six families, a recurrent ~ 1.1 Mb deletion likely resulted from nonallelic homologous recombination between flanking large complex low-copy repeats. Three smaller sized microdeletions (~ 180-500 kb) enabled us to narrow the critical region to one gene, HIP1, encoding Huntington interacting protein 1.

2010-08-28 | GSE23834 | GEO

Recurrent disruption of HIP1 identified in patients with epilepsy, learning difficulties, intellectual disability, and neurobehavioral abnormalities

2010-08-28 | E-GEOD-23834 | biostudies-arrayexpress

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2011-09-21 | GSE26115 | GEO

Transcriptome modulation by loss-of-YAP1/TAZ in SK-N-MC Ewing Sarcoma cells

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2018-09-27 | GSE120512 | GEO

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