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Investigsting the role of NF-ĸB p50 S80 phosphorylation in regulating TNFα-induced transcription in HEK293T cells

ABSTRACT: Investigsting the role of NF-ĸB p50 S80 phosphorylation in regulating TNFα-induced transcription in HEK293T cells

PROVIDER: PRJNA481649 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7535360.fastq.gz	Fastqsanger.gz
	SRR7535361.fastq.gz	Fastqsanger.gz
	SRR7535362.fastq.gz	Fastqsanger.gz
	SRR7535363.fastq.gz	Fastqsanger.gz
	SRR7535364.fastq.gz	Fastqsanger.gz

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Investigsting the role of NF-ĸB p50 S80 phosphorylation in regulating TNFα-induced transcription in HEK293T cells

Project description:Phosphorylation of the NF-ĸB p50 subunit is known to regulate target gene expression. Here, we investigate the role of the novel p50 S80 phosphorylation in regulating TNFα-induced transcription by utilising Wild type (WT) and NFKB1S80A HEK293T cells

2019-09-16 | GSE117279 | GEO

Investigsting the role of NF-ĸB p50 S80 phosphorylation in regulating LPS-induced transcription in THP-1 cells

Project description:Phosphorylation of the NF-ĸB p50 subunit is known to regulate target gene expression. The role of p50 S80 phosphorylation in regulating LPS-induced transcription by utilising wild type (WT) and NFKB1S80A THP-1 cells is investigated.

2020-09-19 | GSE120212 | GEO

Investigsting the role of NF-ĸB p50 S80 phosphorylation in regulating LPS-induced transcription in THP-1 cells

Project description:Investigsting the role of NF-ĸB p50 S80 phosphorylation in regulating LPS-induced transcription in THP-1 cells

| PRJNA492130 | ENA

Genome-wide maps of NFKB1/p50 binding dynamics

Project description:We report the application of ChIP-Seq for high-throughput profiling of NFKB1/p50 binding dynamics. The binding profiles were performed under three conditions/models. We first examine the p50 binding in HEK293T cells during G1 and S phase. HEK293T cells were synchronized with double thymidine block method. Before and after release to S phase, ChIP was performed, and chromatin immunoprecipitated DNA was converted to libraries for sequencing with HiSeq 4000. We find that these NFKB1/p50 binding peaks in G1 phase dramatically reduced at S phase. Then, we further examine the p50 binding in HEK293T/TopBP1 cells in response to tamoxifen treatment. These cells have stable expression of TopBP1 activation domain fusion with estrogen receptor. After treatment, chromatin immunoprecipitated DNA was converted to libraries for sequencing with HiSeq 4000. We find that these NFKB1/p50 binding peaks in vehicle control sample dramatically reduced after tamoxifen treatment. Final, we compare the genome wide binding behavior of wild type p50 and mutant p50 2KR (K354R and K356R). HEK293T cells was transfected with plasmids expression HA-tagged wild type or mutation p50. Chromatin immunoprecipitated DNA was converted to libraries for sequencing with HiSeq 4000. We find that both wild type and p50 2KR mutant share similar binding profile. However, in general, p50 mutant has less binding affinity to NFKB binding sites. This study provides a preliminary but solid basis to our understanding of NFKB1/p50 binding dynamics.

2020-08-13 | GSE129618 | GEO

Tumor-derived prostaglandin E2 promotes p50 NF-κB-dependent differentiation of monocytic MDSC.

Project description:Myeloid-derived suppressor cells (MDSC) include immature monocytic (M-MDSC) and granulocytic (PMN-MDSC) cells that share the ability to suppress adaptive immunity and hinder the effectiveness of anti-cancer treatments. Of note, in response to interferon-γ (IFNγ) M-MDSC release the tumor-promoting and immunosuppressive molecule nitric oxide (NO), whereas macrophages largely express anti-tumor properties. Investigating these opposing activities, we found that tumor-derived prostaglandin E2 (PGE2) induces nuclear accumulation of p50 NF-κB in M-MDSC, diverting their response to IFNγ towards NO-mediated immunosuppression and reducing TNFα expression. At the genome level, p50 NF-κB promoted binding of STAT1 to regulatory regions of selected IFNγ-dependent genes, including inducible nitric oxide synthase (Nos2). In agreement, ablation of p50 as well as pharmacological inhibition of either the PGE2 receptor EP2 or NO production reprogrammed M-MDSC towards a NOS2low/TNFαhigh phenotype, restoring the in vivo antitumor activity of IFNγ. Our results indicate that inhibition of the PGE2/p50/NO axis prevents MDSC suppressive functions and restores the efficacy of anticancer immunotherapy.

2020-05-15 | GSE84468 | GEO

An autoregulatory RelB:p50 NF-κB pathway perpetuates pro-survival TNF response in multiple myeloma

Project description:Pro-inflammatory cytokines were shown to promote growth and survival of cancerous cells. TNF induced RelA:p50 NF-κB dimer via the canonical pathway is thought to link inflammation with cancer. Integrating biochemical and computational studies we identify that deficiency of non-canonical signal transducer p100 triggers a positive autoregulatory loop, which instead perpetuates an alternate RelB:p50 containing NF-κB activity upon TNF treatment. TNF stimulated RelB:p50 dimer is sufficient for mediating NF-κB target gene-expressions and suppressing apoptotic cellular death independent of principal NF-κB subunit RelA. We further demonstrate that activating mutations in non-canonical NF-κB module deplete multiple myeloma cells of p100, thereby, provoking autoregulatory RelB:p50 activation. Finally, autoregulatory control reinforces protracted pro-survival NF-κB response, albeit comprising of RelB:p50, upon TNF priming that protects myeloma cells with dysfunctional p100 from subsequent apoptotic insults. In sum, we present evidence for positive autoregulation mediated through the NF-κB system and its potential involvement in human neoplasm.

2017-06-12 | GSE68615 | GEO

Selective Regulation of a Defined Subset of Inflammatory and Immunoregulatory Genes by an NF-kB p50-IkBz Pathway

Project description:The five NF-kB family members and three nuclear IkB proteins play diverse biological roles, but the mechanisms by which distinct NF-kB and NF-kB: IkB complexes contribute to selective gene transcription remain poorly understood. Using nascent transcript RNA-seq, we observed considerable overlap between p50-dependent and IkBz-dependent genes in Toll-like receptor 4 (TLR4)-activated macrophages. Key inflammatory and immunoregulatory genes, including Il6, Il1b, Nos2, Lcn2, and Batf, were among the p50-IkBz co-dependent genes. IkBz typically bound genomic sites occupied earlier by NF-kB dimers. However, p50-IkBz co-dependence did not coincide with preferential binding of either protein, as p50, IkBz, and RelA co-occupied thousands of sites. A common feature of p50-IkBz co-dependent genes was close proximity to a p50/RelA/IkBz co-bound site exhibiting p50-dependent binding of RelA and IkBz. This result and others suggest that IkBz function is not restricted to p50 homodimers. Notably, IkBz and the p50-IkBz target genes comprise a high percentage of genes that exhibited the greatest differential expression between TLR4-stimulated and tumor necrosis factor receptor (TNFR)-stimulated macrophages, with ectopic IkBz rescuing a subset of these genes. These results reveal a defined p50-IkBz pathway that selectively activates a set of key inflammatory and immunoregulatory genes and serves as an important contributor to the differential responses to TNFR and TLR4.

2024-04-23 | GSE245681 | GEO

Selective Regulation of a Defined Subset of Inflammatory and Immunoregulatory Genes by an NF-kB p50-IkBz Pathway

Project description:The five NF-kB family members and three nuclear IkB proteins play diverse biological roles, but the mechanisms by which distinct NF-kB and NF-kB:IkB complexes contribute to selective gene transcription remain poorly understood. Using nascent transcript RNA-seq, we observed considerable overlap between p50-dependent and IkBz-dependent genes in Toll-like receptor 4 (TLR4)-activated macrophages. Key inflammatory and immunoregulatory genes, including Il6, Il1b, Nos2, Lcn2, and Batf, were among the p50-IkBz co-dependent genes. IkBz typically bound genomic sites occupied earlier by NF-kB dimers. However, p50-IkBz co-dependence did not coincide with the preferential binding of either protein, as p50, IkBz, and RelA co-occupied thousands of sites. A common feature of p50-IkBz co-dependent genes was close proximity to a p50/RelA/IkBz co-bound site exhibiting p50-dependent binding of RelA and IkBz. This result and others suggest that IkBz function is not restricted to p50 homodimers. Notably, IkBz and the p50-IkBz target genes comprise a high percentage of genes that exhibited the greatest differential expression between TLR4-stimulated and tumor necrosis factor receptor (TNFR)-stimulated macrophages, with ectopic IkBz rescuing a subset of these genes. These results reveal a defined p50-IkBz pathway that selectively activates a set of key inflammatory and immunoregulatory genes and serves as an important contributor to the differential responses to TNFR and TLR4.

2024-03-14 | GSE249261 | GEO

Defining the role of NF-ĸB p105/p50 in human macrophage through the transcriptomic analysis of NFKB1 deletion in THP-1 cells

Project description:Defining the role of NF-ĸB p105/p50 in human macrophage through the transcriptomic analysis of NFKB1 deletion in THP-1 cells

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Control of LPS induced gene expression in bone marrow derived macrophages by the p50/p105 subunit of NF-kB and IL-10

Project description:Bone marrow-derived macrophages were produced from mice lacking IL-10 alone (IL10-def) or mice lacking both IL-10 and the p50/p105 subunit of NF-kB (p50/IL10), and left unstimulated, stimulated with LPS (1 ng/ml) or stimulated with LPS and IL-10 (0.3 ng/ml).

2011-01-10 | GSE19941 | GEO

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