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Functional roles of STIM1::MXD3 in K562 myeloid leukemic cells and its impact on MYC transcriptional control [K562_STIM1-MXD3]

ABSTRACT: To investigate the functional significance of STIM1::MXD3, we overexpressed the fusion gene in K562 myeloid leukemia cells and analysed global gene expression changes using RNA-seq.

ORGANISM(S): Homo sapiens

PROVIDER: GSE222813 | GEO | 2023/05/02

REPOSITORIES: GEO

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Functional roles of STIM1::MXD3 in K562 myeloid leukemic cells and its impact on MYC transcriptional control [K562_STIM1-MXD3]

Project description:Functional roles of STIM1::MXD3 in K562 myeloid leukemic cells and its impact on MYC transcriptional control [K562_STIM1-MXD3]

| PRJNA923604 | ENA

Expression profiling of MXD3 stable cell lines

Project description:A subset of medulloblastomas, the most common brain tumor in children, is hypothesized to originate from granule neuron precursors (GNPs) in which the sonic hedgehog (SHH) pathway is over-activated. MXD3, a basic helix-look-helix zipper transcription factor of the MAD family, has been reported to be upregulated during postnatal cerebellar development and to promote GNP proliferation and MYCN expression. Mxd3 is upregulated in mouse models of medulloblastoma as well as in human medulloblastomas. Therefore, we hypothesize that MXD3 plays a role in the cellular events that lead to medulloblastoma biogenesis. The purpose of this study was to identify changes in gene expression in response to MXD3.

2012-07-13 | GSE34100 | GEO

Expression profiling of MXD3 stable cell lines

2012-07-12 | E-GEOD-34100 | biostudies-arrayexpress

Role of MXD3 in DAOY cell proliferation

Project description:This SuperSeries is composed of the following subset Series: GSE34050: ChIP-chip from DAOY cells stably expressing HA-MXD3 with anti-HA GSE34100: Expression profiling of MXD3 stable cell lines Refer to individual Series

2012-07-12 | E-GEOD-34101 | biostudies-arrayexpress

DAOY human medulloblastoma cells stably expressing a tamoxifen inducible MXD3: Ethanol vs. Tamoxifen

Project description:Gene expression profiling of DAOY stable cell lines expressing a tamoxifen inducible MXD3. Data was normalized to a null version of MXD3 (unable to bind DNA). Goal of the study was to identify candidate genes regulated by MXD3.

2014-06-28 | GSE58903 | GEO

ChIP-chip from DAOY cells stably expressing HA-MXD3 with anti-HA

2012-07-13 | GSE34050 | GEO

ChIP-chip from DAOY cells stably expressing HA-MXD3 with anti-HA

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Expression profile of select glucose and lipid metabolic genes mediated by STIM1 knockout, or STIM1 knockout plus Snail1 overexpression in SMMC7721 cells

Project description:To investigate the altered glucose and lipid metabolism genes after STIM1 knockout (STIM1 KO) or STIM1 knockout plus Snail1 OE (STIM1 KO+Snail1 OE) in SMMC7721 cells. STIM1 KO-SMMC7721 cells were constructed by CRISPR/Cas9, and STIM1 KO+Snail1 OE-SMMC7721 cells was established via lentiviral Infection of Snail1 overexpression in STIM1 KO-SMMC7721 cells. The cells mentioned above were cultured in DMEM supplemented with 10% (v/v) FBS at 37 °C in 5% CO2. When the cells grow to 60~70% confluent, total RNA was extracted by using Trizol (TAKARA, Japan). Reverse transcription was performed from 1μg total RNA using PrimeScript™ RT reagent Kit with gDNA Eraser (TAKARA), Quantitative real-time PCR were performed (CFX386, BioRad) with 40 cycles at 95 °C for 10 seconds, 59 °C for 20 seconds and 72 °C for 30 seconds.

2020-04-07 | GSE148129 | GEO

STIM1 Translocation to The Nucleus Protects Cells from DNA Damage

Project description:DNA damage represents a challenge for cells as this damage must be eliminated to preserve cell viability and the transmission of genetic information. To reduce or eliminate unscheduled chemical modifications in genomic DNA, an extensive signaling network, known as the DNA damage response (DDR) pathway, ensures this repair. In this work, and by means of a proteomic analysis aimed at the study of the STIM1 protein interactome, we have found that STIM1 is closely related to the protection from endogenous DNA damage, replicative stress, as well as in the response to interstrand crosslinks (ICLs). Here we show that STIM1 has a nuclear localization signal (NLS) that mediates its translocation to the nucleus, and that this translocation and the association of STIM1 to chromatin is enhanced in response to mitomycin C (MMC), an ICL-inducing agent. Consequently, STIM1-deficient cell lines show a higher level of basal DNA damage, replicative stress, and a higher sensitivity to MMC. We show that STIM1 normalizes FANCD2 protein levels in the nucleus, explaining the increased sensitivity to MMC in STIM1-KO cells. Our results show for the first time a nuclear function for the endoplasmic reticulum protein STIM1 and increase the number of genes involved in DNA repair.

2023-12-22 | PXD041181 | Pride

STIM1 controls T cell mediated immune regulation and inflammation in chronic infection

Project description:Influence of STIM1 on the transcriptome of CD4+ T cell subsets STIM1 is critical for the regulation of the intracellular Ca2+ homeostasis in CD4+ T cell. Loss of function mutations in STIM1 in patients result in severe immuno deficiency and recurrent infections. Using conditional knock out mice for STIM1, we investigated the role of STIM1 in T cells during chronic infections by in-vivo and in-vitro experiments. We found that STIM1 is required for T cell-mediated immunity to chronic infection with Mycobacterium tuberculosis (Mtb) as STIM1-deficient mice succumb to infection faster than littermate controls, have increased mycobacterial burdens and severe pulmonary infiltration with myeloid and lymphoid cells .Using the Affymetrix Mouse Exon 1.0 platform, we analyzed the influence of STIM1 expression on the transcriptom of CD4+T cells in-vitro. We found that STIM1 is required for the regulation of apoptosis related genes after TCR stimulation as well as for the induction of a transcriptonal program that polarizes naive CD4+ T cells into inducible CD4+ T regulatory cells (iTreg). Together with our in-vivo findings, these experiments reveal that STIM1 is essential for immune regulation to prevent an injurious inflammatory response during chronic infection.

2015-03-17 | GSE66933 | GEO

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