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Biphasic effects of pleiotropic cytokine IL-27 during Staphylococcus aureus implant-associated osteomyelitis

ABSTRACT: Biphasic effects of pleiotropic cytokine IL-27 during Staphylococcus aureus implant-associated osteomyelitis

PROVIDER: PRJNA714525 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13962500.fastq.gz	Fastqsanger.gz
	SRR13962501.fastq.gz	Fastqsanger.gz
	SRR13962502.fastq.gz	Fastqsanger.gz
	SRR13962503.fastq.gz	Fastqsanger.gz
	SRR13962504.fastq.gz	Fastqsanger.gz

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Biphasic effects of pleiotropic cytokine IL-27 during Staphylococcus aureus implant-associated osteomyelitis

Project description:We aimed to elucidate the mechanism of IL-27/ IL-27 receptor signaling effects on S. aureus osteomyelitis via gene expression studies.

2021-03-16 | GSE168896 | GEO

mRNA transcriptome analysis of bone in a mouse model of implant-associated Staphylococcus aureus osteomyelitis

Project description:Objective: To investigate the molecular pathogenesis of bone with implant-associated osteomyelitis (IAOM) in early and chonic stages. Methods: After a 2 mm sterile stainless pin (0.3 mm in diameter) was inserted into the bone marrow cavity, 2 μl S. aureus solution at 1 × 10e6 CFU/ml was slowly injected into the bone marrow cavity using a micro-syringe to create IAOM mice while only an equal volume of sterile PBS to create controls. Transcriptomic sequencing was performed on day 3 and 14 post-operation, respectively. Differential expression analyses of IAOM_3D vs Ctrl_3D and of IAOM _14D vs Ctrl_14D were performed using the DESeq2 R package (1.16.1); P-values were adjusted using the Benjamini and Hochberg’s approach to control the false discovery rate. The genes with an adjusted P-value < 0.05 and |log2 (Fold Change)| > 1 were recognized as differentially expressed genes (DEGs). GO, KEGG and PPI analysis of DEGs were performed to identify key genes. Results: Differential expression analyses detected a total of 101 DEGs, among which 96 were up-regulated and 5 down-regulated in the femur, when the IAOM and control groups were compared by day 3 post-infection. The number of DEGs significantly increased up to 1,702 by day 14 post-operation, with 1,065 up-regulated and 637 down-regulated in the IAOM femurs compared with controls. Further GO, KEGG and PPI analyses of DEGs suggested that IL-6, CXCL10, IFN-γ and CXCL9 were associated with early development of IAOM. Conclusions: Our study has revealed transcriptomic characteristics of IAOM and suggested that IL-6, CXCL10, IFN-γ and CXCL9 might play an important role in the early stage of IAOM.

2021-02-11 | GSE166522 | GEO

mRNA transcriptome analysis of bone in a mouse model of implant-associated Staphylococcus aureus osteomyelitis

Project description:mRNA transcriptome analysis of bone in a mouse model of implant-associated Staphylococcus aureus osteomyelitis

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Apolipoprotein E deficiency potentiates macrophage resistance to staphylococcus aureus osteomyelitis via regulating cholesterol metabolism

Project description:To explore how APOE functions in the mechanism of regulation of cholesterol metabolism during S. aureus osteomyelitis, we established S. aureus osteomyelitis models in WT mice and APOE knockout mice. We then performed gene expression profiling analysis using data obtained from RNA-seq of bone marrow from mice mentioned above at day 7 after operation.

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Transcriptomic profile of Lin negative, LEPR positive cells of human peri-implant fibrous tissue and peri-implant bone

Project description:Peri-implant fibrosis is one of the most common reasons for implant failure and surgical revision after prosthetic joint replacement. This type of surgical revisionis associated with substantial additional morbidity and healthcare costs. However, the cellular and molecular mediators of peri-implant fibrosis remain unclear. Here, we show that peri-implant fibrotic tissue in mice and humans is largely composed of a specific population of leptin receptor-expressing(LEPR+) cells and that these LEPR+cells are necessary and sufficient to both generate and maintain peri-implant fibrotic tissue. Genetic ablation of LEPR+cells prevents peri-implant fibrosis, and implantation of LEPR+cells from peri-implant fibrotic tissue is sufficient to induce fibrosis in secondary hosts. We further identify adhesion G protein-coupled receptorF5 (ADGRF5) as a crucial mediator of the fibrotic response by LEPR+cells, as conditional deletion of ADGRF5 in LEPR+cells attenuates peri-implant fibrosis while augmenting peri-implant bone formation. Finally, we demonstrate that inhibition of ADGRF5 by intra articular or systemic administration of neutralizing anti-ADGRF5prevents and reverses peri-implant fibrosis. Thus, pharmaceutical agents that inhibit the ADGRF5 pathway inLEPR+cells may represent a new approach to prevent and treat peri-implant fibrosis.

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Transcriptomic profile of Lin negative, LEPR positive cells of murine peri-implant fibrous tissue and peri-implant bone

Project description:To investigate the transcriptomic profile difference between LEPR cells in peri-implant fibrous tissue and peri-implant bone

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Project description:High-resolution transcriptomic analysis of the adaptive response of Staphylococcus aureus during acute and chronic phases of osteomyelitis infection

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A chromatin-regulated biphasic circuit coordinates IL1B-mediated inflammation

Project description:Inflammation is characterized by a biphasic cycle consisting initially of a pro-inflammatory phase which is subsequently resolved by anti-inflammatory processes. The coordination of these two disparate states needs to be highly controlled, suggesting that the regulation of the cytokines that drive these processes are intimately linked. Interleukin-1 beta (IL1B) is a master regulator of pro-inflammation and is encoded within the same topologically associated domain (TAD) as interleukin-37 (IL37). IL37 has recently emerged as a powerful anti-inflammatory cytokine which diametrically opposes the function of IL1B. Within this TAD, we identified a novel long non-coding RNA called AMANZI which negatively regulates IL1B expression and trained immunity through the induction of IL37 transcription. We found that the activation of IL37 occurs through the formation of a dynamic long-range chromatin contact that leads to the temporal delay of anti-inflammatory responses. The common variant rs16944 present in AMANZI augments this regulatory circuit, predisposing individuals to enhanced pro-inflammation or immunosuppression. Our work illuminates a chromatin-mediated biphasic circuit coordinating expression of IL1B and IL37, thereby regulating two functionally opposed states of inflammation from within a single TAD.

2023-10-27 | PXD045971 | Pride

Comparison of Gene Expression between Peri-implant Soft Tissue and Oral Mucosal Tissue

Project description:The mucosal penetration area formed by implant placement is critical problems of dental implant treatment, because epithelial barrier is broken and it can become a source of inflammation. To clarify the influence and risk caused by dental implant treatment in peri-implant soft tissue, we compared to gene expression profile of peri-implant soft tissue and oral mucosal tissue with microarray analysis.

2013-01-24 | GSE43744 | GEO

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