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Gene expression profiling of dsDNA90 or ssDNA90 stimulated Mouse Embryonic Fibroblasts

ABSTRACT: Gene expression analysis of wild type, STING knock-out and STAT1 knock-out Mouse Embryonic Fibroblasts (MEFs) stimulated with 90-mer dsDNA or 90-mer ssDNA. Genes whose expression that are affected by cytosolic DNA in a STING dependent manner will be identified and signaling pathways regulated by STING will be elucidated.

ORGANISM(S): Mus musculus

PROVIDER: GSE43481 | GEO | 2013/01/15

SECONDARY ACCESSION(S): PRJNA186544

REPOSITORIES: GEO

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Gene expression profiling of dsDNA90 or ssDNA90 stimulated Mouse Embryonic Fibroblasts

Project description:Gene expression analysis of wild type, STING knock-out and STAT1 knock-out Mouse Embryonic Fibroblasts (MEFs) stimulated with 90-mer dsDNA or 90-mer ssDNA. Genes whose expression that are affected by cytosolic DNA in a STING dependent manner will be identified and signaling pathways regulated by STING will be elucidated. Primary MEFs were mock treated or transfected with dsDNA90 or ssDNA90 for 3 hours. Total RNA was then extracted for array analysis.

2013-01-15 | E-GEOD-43481 | biostudies-arrayexpress

Gene expression in murine embryonic fibroblasts stimulated with DNA or LPS

Project description:MyD88 may play a direct role in STING-dependent signaling, or alternatively that STING-dependent pro-inflammatory cytokines may require downstream MyD88-dependent signaling to exert their effect. To determine this, we treated STING or MyD88-deficient murine embryonic fibroblasts (MEFs), bone marrow derived macrophages (BMDM) or dendritic cells (BMDC) with exogenous CDN’s or cytosolic dsDNA (ISD) which triggers STING-signaling and type I IFN production.

2018-02-01 | GSE107809 | GEO

The REL domain of the NFATc2 protein binding to four types of DNA using protein binding microarrays

Project description:NFATc2 is a sequence specific DNA binding protein in the Rel family that binds a 5-mer motif CGGAA better when both cytosines in the CG dinucleotide are methylated. Using protein binding microarrays (PBMs) we examined the DNA binding of NFATc2 to three additional types of DNA: (1) single-stranded DNA (ssDNA), (2) double stranded DNA (dsDNA) with 5-methylcytosine (5mC, M) in one strand and cytosine in the second strand (dsDNA(5mC|C)) and (3) DNA with 5-hydroxymethylcytosine (5hmC, H) in one strand and cytosine in the second strand (dsDNA(5hmC|C)). NFATc2 binding to ssDNA is strongest for the 7-mer ATTTCCA. While NFAT can bind ssDNA, the average binding to the 40,000 DNA features of the PBM was twice as high for ssDNA compared to dsDNA, with maximal binding observed to dsDNA, suggesting that NFAT binding to dsDNA is more specific. dsDNA sequences containing the 5-mer MGGAA with 5mC in one DNA strand are better bound than CGGAA, with methylation of a single cytosine being sufficient for the stronger binding seen when both cytosines in the CG dinucleotide are methylated. Several DNA sequences containing HGGAA are also better bound than those containing cytosine, however the effect of 5hmC is not as dramatic as that of 5mC. Analysis of available NFATc2:DNA complexes rationalizes our PBM data.

2018-12-31 | GSE104631 | GEO

Gene expression by cyotosolic DNA stimulation

2014-09-30 | GSE61835 | GEO

Gene expression by cyotosolic DNA stimulation

Project description:STING molecule has been reported to be important adaptor molecule for cytosolic DNA sensing. We investigated gene expression by cytosolic DNA stimulation using bone marrow derived dendritic cells. We comparared gene expression profile between WT and STING knock out BMDCs after cytosolic DNA stimulation. We generated BMDCs by culturing in the presence of GM-CSF. BMDCs were stimulated by purified tumor-cell derived DNA using lipofectamine. After 7 hrs incubation, total RNA was isolated using Rneasy kit (Qiagen) and microarray was performed at genomic core facility in university of Chicago

2014-09-30 | E-GEOD-61835 | biostudies-arrayexpress

Gene expression profiling of Î³34.5 deleted HSV1 infected Mouse Embryonic Fibroblasts

Project description:Gene expression analysis of wild type and STING knock-out Mouse Embryonic Fibroblasts (MEFs) infected with Î³34.5 deleted HSV1. Genes whose expression that are affected by HSV1 in a STING dependent manner will be identified and signaling pathways regulated by STING will be elucidated. Primary MEFs were mock treated or infected with Î³34.5 deleted HSV1 at M.O.I. 1. Total RNA was extracted 3 hours post infection for array analysis.

2013-01-15 | E-GEOD-43479 | biostudies-arrayexpress

Gene expression profiling of γ34.5 deleted HSV1 infected Mouse Embryonic Fibroblasts

Project description:Gene expression analysis of wild type and STING knock-out Mouse Embryonic Fibroblasts (MEFs) infected with γ34.5 deleted HSV1. Genes whose expression that are affected by HSV1 in a STING dependent manner will be identified and signaling pathways regulated by STING will be elucidated.

2013-01-15 | GSE43479 | GEO

Cytosolic DNA accumulation promotes breast cancer immunogenicity via a STING-independent pathway

Project description:Immune checkpoint blockade (ICB) has revolutionized cancer treatment. However, ICB alone has demonstrated only benefit in a small subset of patients with breast cancer. We here reported that the tumoral cytosolic ssDNA is associated with tumor-infiltrating lymphocyte in patients with triple negative breast cancer. TREX1 deficiency triggered a STING-independent innate immune response via DDX3X. Cytosolic ssDNA accumulation in tumors due to TREX1 deletion is sufficient to drastically improve the efficacy of ICB.

2023-09-28 | GSE244296 | GEO

For origin melting Rep nucleoprotein complex accommodates both dsDNA and ssDNA of DUE

Project description:The replication initiation proteins interact dsDNA located at replication origin and ssDNA of DNA unwinding element (DUE), formed as a result of the destabilization of the double-stranded helix of AT-rich origin region. It is a critical step in the DNA replication initiation; however, the structure of nucleoprotein complex involving initiator protein, dsDNA and/or ssDNA is still elusive and different models are proposed. In this work, based on crosslinking combined with mass spectrometry (MS), structural and bioinformatic analysis, we defined amino acid residues in plasmid Rep proteins, TrfA and RepE, that are essential for interaction with ssDNA. The study of Rep mutant proteins containing single amino acid substitutions affecting DNA interaction reveals the importance of Rep-ssDNA complexes formation for a dsDNA melting at DUE. Furthermore, the crystal structures obtained for complex of RepE protein with DUE ssDNA, and, RepE complexed with both DUE ssDNA and dsDNA containing RepE specific binding site (iteron) revealed that the plasmid initiator can not only bind iterons and ssDNA DUE separately but also can form a tripartite nucleoprotein complex bringing together specific sequences of replication origin. The presented data strongly supports the loop-back model in which a replication initiator molecule interacts with dsDNA and ssDNA.

2024-01-26 | PXD032398 | Pride

High-yield genome engineering in primary cells using a hybrid ssDNA repair template and small-molecule cocktails [Ampli-seq]

Project description:Enhancing site-specific transgene insertion efficiency by homology-directed repair (HDR) using high concentrations of double-stranded DNA (dsDNA) with Cas9 target sequences (CTSs) can be toxic to primary cells. Here, we develop single-stranded DNA (ssDNA) HDR templates (HDRTs) incorporating CTSs with reduced toxicity that boost knock-in efficiency and yield by an average of 2–3-fold relative to dsDNA CTSs. Using small-molecule combinations that enhance HDR, we could further increase knock-in efficiencies by an additional 2–3-fold on average. Our method works across a variety of target loci, knock-in constructs, and primary human cell types, reaching HDR efficiencies of >80–90%. We demonstrate application of this approach for both pathogenic gene variant modeling and gene-replacement strategies for IL2RA and CTLA4 mutations associated with Mendelian disorders. Finally, we develop a good manufacturing practice (GMP)-compatible process for non-viral chimeric antigen receptor (CAR)-T cell manufacturing, with knock-in efficiencies (46–62%) and yields (>1.5×109 modified cells) exceeding those of conventional approaches.

2022-05-21 | GSE203349 | GEO

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