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Histone deacetylase 3 facilitates TNF α -mediated NF-κB activation through suppressing CTSB induced RIP1 degradation and is required for host defense against bacterial infection

ABSTRACT: Histone deacetylase 3 facilitates TNF α -mediated NF-κB activation through suppressing CTSB induced RIP1 degradation and is required for host defense against bacterial infection

PROVIDER: PRJNA813301 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18248236_1.fastq.gz	Fastqsanger.gz
	SRR18248236_2.fastq.gz	Fastqsanger.gz
	SRR18248237_1.fastq.gz	Fastqsanger.gz
	SRR18248237_2.fastq.gz	Fastqsanger.gz
	SRR18248238_1.fastq.gz	Fastqsanger.gz

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Histone deacetylase 3 facilitates TNF α -mediated NF-κB activation through suppressing CTSB induced RIP1 degradation and is required for host defense against bacterial infection

Project description:Histone deacetylases (HDACs), as important enzymes regulating acetylation, participate in a series of cell physiological process. Here we reported that HDAC3-deficient macrophages had elevated expression of multiple cathepsins and over-expressed cathepsins such as cathepsin B (CTSB) caused remarkable degradation of receptor (TNFRSF)-interacting serine-threonine kinase 1 (RIP1), which resulted in reduced TNFα mediated NF-κB activation and inflammatory response. Consistent with these findings, mice with macrophage specific knockout of HDAC3 were impaired in inflammatory response and susceptible to pseudomonas aeruginosa infection. Thus, our studies uncovered important roles of HDAC3 in the regulation of cathepsin-mediated lysosomal degradation and RIP1-mediated inflammatory response in macrophages as well as in host defense against bacterial infection.

2022-05-12 | GSE197989 | GEO

Histone deacetylase 3 facilitates TNF α -mediated NF-κB activation through suppressing CTSB induced RIP1 degradation and is required for host defense against bacterial infection [ChIP-seq]

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Histone deacetylase 3 facilitates TNF α -mediated NF-κB activation through suppressing CTSB induced RIP1 degradation and is required for host defense against bacterial infection [ChIP-seq]

Project description:Histone deacetylase 3 facilitates TNF α -mediated NF-κB activation through suppressing CTSB induced RIP1 degradation and is required for host defense against bacterial infection [ChIP-seq]

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RIP1 perturbation induces chondrocyte necroptosis and promotes osteoarthritis pathogenesis

Project description:Receptor-interacting protein kinase 1 (RIP1)-mediated necroptosis plays a vital role in various diseases, but the involvement of RIP1 and its functional mechanism in osteoarthritis pathogenesis remains largely unknown. To identify molecular targets of RIP1 in chondrocytes, RNA sequencing was performed in chondrocytes treated with adenovirus expressing RIP1 or vector control. We found that 9857 genes were differentially expressed in chondrocytes after RIP1 overexpression. GO analysis indicated that DNA replication, chromosome segregation and regulation of cell cycle process were upregulated, while terms including cartilage development, skeletal system development, extracellular matrix organization, skeletal system morphogenesis, chondrocyte differentiation, collagen fibril organization and limb development were downregulated. Pathway analysis revealed that IL-17 signaling pathway, cell cycle, DNA replication, proteasome, TNF signaling pathway, cellular senescence and p53 signaling pathway were significantly upregulated by RIP1, meanwhile, ECM-receptor interaction, other glycan degradation and glycosaminoglycan degradation were downregulated. These results underscore the importance of RIP1 in OA by perturbing a series of essential events during disease progression such like cell cycle regulation, chondrocyte differentiation, inflammation and ECM remodeling.

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Role of RelB in Suppressing NF-κB Pro-Inflammatory Gene Expression

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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.

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Vibrio metoecus strain:RIP1

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