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Cut & Tag sequencing exhibited the chromosome binding regions of transcription factor IRF5 within murine bone marrow derived macrophages

ABSTRACT: CUT&Tag technology represents a cutting-edge method for investigating protein-DNA interactions. Utilizing a hyperactive novel fusion enzyme (Hyperactive pG-Tn5 / pA-Tn5 Transposase), this technique, under antibody guidance, specifically targets and cleaves DNA sequences near target proteins. It boasts several advantages over traditional ChIP-Seq, including lower cell input requirements, enhanced signal-to-noise ratio, and improved repeatability. Employing this innovative approach, we examined the binding strength of interferon regulatory factor 5 in bone marrow-derived macrophages, and analyzed the biological behaviors of IRF5 following stimulation of these cells.

ORGANISM(S): Mus musculus

PROVIDER: GSE267400 | GEO | 2024/05/20

REPOSITORIES: GEO

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Genome-wide maps of chromatin state of IRF5+/+ and IRF5-/- CD4+ mouse T cells

Project description:Genetic variants in IRF5 are associated with multiple immune-mediated diseases. IRF5 has been predominantly focused on for its regulation of myeloid-derived cells. We found that IRF5 contributes to CD4+ T cell outcomes and that it regulates early T cell receptor-initiated signaling and subsequently translocates to the nucleus where it binds to promoters of various genes regulated with T cell activation. We report the chromatin state of freshly isolated and activated IRF5+/+ and IRF5-/- CD4+ T cells in vitro. While there are minimal differential peaks between freshly isolated IRF5+/+ and IRF5-/- CD4+ T cells, once activated multiple differential peaks are observed between IRF5+/+ and IRF5-/- CD4+ T cells.

2020-06-29 | GSE148672 | GEO

RNA-sequencing of IRF5+ and IRF5- circulating monocytes from patients with Type-2 Diabetes

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Expression analysis of murine splenic B-cells after retroviral transduction with a constitutively active variant of IRF5 (IRF5-4D)

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Project description:To characterize the relationship between IRF5 and Lyn in innate immune responses at a genome-wide scale, we performed gene expression microarray analysis for wild-type (WT), Irf5-KO, Lyn-KO and Lyn/Irf5-DKO bone marrow-derived dendritic cells (BMDCs) with or without 6 h-stimulation with 150 nM CpG-B ODN. We extracted the transcripts that were upregulated by CpG-B ODN in WT BMDCs, further upregulated in Lyn-KO BMDCs and then downregulated in Lyn/Irf5-DKO BMDCs (fold change â?¥ 2, false discovery rate < 0.05). When these 79 transcripts were sorted by their expression levels in Lyn-KO BMDCs, most of the top 20 genes (13 out of 20) were those encoding type I interferons (IFNs), indicating that Lyn particularly suppresses IRF5 induction of type I IFNs. BMDCs from WT, Irf5-KO, Lyn-KO and Lyn/Irf5-DKO mice in a C57BL/6 background were unstimulated or stimulated with CpG-B ODN. Biological triplicate for each genotype were analyzed (24 samples in total).

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Tn5 tagments and transports oligos to single-strand DNA for high throughput sequencing

Project description:Tn5 transposon tagments double-strand DNA and RNA/DNA hybrid to generate nucleic acids ready to be amplified for high throughput sequencing. The nucleic acid substrates of Tn5 transposon need to be explored to increase the applications of Tn5. Here, we find that Tn5 transposon is able to transport oligos into the 5’ end of single-strand DNA, which are more than 140 base pairs of nucleic acids. Based on this property of Tn5, we develop a tagmentation-based and ligation-enabled single-strand DNA sequencing method, TABLE-seq. Through a series of reaction temperature, time, and enzyme concentration tests, we managed to apply this TABLE-seq to strand-specific RNA sequencing, starting with as low as 30 picograms of total RNA. Moreover, compared with traditional dUTP based strand-specific RNA sequencing, this method detects more genes, has higher strand-specificity, and shows more evenly distributed reads across genes. Together, our results provide insights into the properties of Tn5 transposons and expand the applications of Tn5 in cutting-edge sequencing techniques.

2023-01-30 | GSE208316 | GEO

Expression analysis of murine splenic B-cells after retroviral transduction with a constitutively active variant of IRF5 (IRF5-4D)

Project description:Genome-wide gene expression analysis of murine splenic B-cells following retroviral transduction with a constitutively active IRF5 (IRF5-4D)

2014-09-24 | GSE51719 | GEO

Gene expression profiling in wild-type, Irf5-KO, Lyn-KO and Lyn/Irf5-DKO BMDCs unstimulated or stimulated with CpG-B ODN

Project description:To characterize the relationship between IRF5 and Lyn in innate immune responses at a genome-wide scale, we performed gene expression microarray analysis for wild-type (WT), Irf5-KO, Lyn-KO and Lyn/Irf5-DKO bone marrow-derived dendritic cells (BMDCs) with or without 6 h-stimulation with 150 nM CpG-B ODN. We extracted the transcripts that were upregulated by CpG-B ODN in WT BMDCs, further upregulated in Lyn-KO BMDCs and then downregulated in Lyn/Irf5-DKO BMDCs (fold change ≥ 2, false discovery rate < 0.05). When these 79 transcripts were sorted by their expression levels in Lyn-KO BMDCs, most of the top 20 genes (13 out of 20) were those encoding type I interferons (IFNs), indicating that Lyn particularly suppresses IRF5 induction of type I IFNs.

2016-07-25 | GSE63014 | GEO

CUT&Tag analysis of H3K36me3 and H3K27me3, in Setd2-WT and -KO murine PDAC cell line

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2023-02-06 | GSE176013 | GEO

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2017-12-27 | GSE108526 | GEO

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