Hyperlipidemia impaired innate response
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE42061 | GEO | 2012/11/07
SECONDARY ACCESSION(S): PRJNA179048
REPOSITORIES: GEO
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Project description:To explore the effect of hyperlipidemia on macrophages' innate immune response to Porphyromonas gingivalis invasion 12 samples, 3 replicates in 4 groups, with cells from hyperlipidemic ApoE deficient mice and nonhyperlipidemic C57BL/6 mice stimulate with or without P.gingivalis(Pg)
2012-11-07 | E-GEOD-42061 | biostudies-arrayexpress
Project description:Obesity is a chronic inflammatory disease that weakens macrophage innate immune response to infections. Since M1 polarization is crucial during acute infectious diseases, we hypothesized that diet-induced obesity inhibits M1 polarization of macrophages in the response to bacterial infection. Using a computational approach in conjunction with microarray data, we identified switching genes that may differentially control the behavior of response pathways in macrophages from lean and obese mice. Bone marrow macrophages (BMMM-NM-&) from lean and obese mice were exposed to live Porphyromonas gingivalis (P. gingivalis) for three incubation times (1 h, 4 h and 24 h). cDNA from BMMM-NM-& of lean and obese mice were hybridized on Affymetrix Mouse Genome 430 2.0 Arrays. Hybridization was performed on three replicates at each time point (18 arrays total).
2013-06-12 | E-GEOD-47414 | biostudies-arrayexpress
Project description:Transcriptome profiling of KYSE30 cells after intracellular invasion by Porphyromonas gingivalis Purpose: Overabundance of Porphyromonas gingivalis (P. gingivalis) plays oncogenic roles in development and progression of esophageal squamous cell carcinoma (ESCC). To unveil the molecular mechanisms underlying the tumor-promoting role, RNAseq was used to identify differentially expressed genes in response to P. gingivalis in KYSE30 cells. Methods: mRNA profiles were generated by deep sequencing for P. gingivalis-treated KYSE30 cells and PBS-treated control cells in triplicate. RNAseq data were mapped to human genome (hg19) using Hisat2. Differentially expressed genes were identified using StringTiel and Ballgown. Results: A total of 10 239 genes and a total of 10 297 genes were identified in KYSE30 cells treated with P. gingivalis and PBS, respectively. After expression quantification using Ballgown, 124 up-regulated genes and 122 down-regulated genes were identified in P. gingivalis-treated KYSE30 cells compared with PBS-treated cells. Enrichment analysis of GO and KEGG pathway showed response to virus, innate immune response, Herpes simplex infection, metabolism of xenobiotics by cytochrome P450 and tyrosine metabolism were enriched in P. gingivalis-treated KYSE30 cells. Conclusions: This study reveals that P. gingivalis infection in ESCC triggers immune response and may cause deregulation of signal transduction through tyrosine metabolism.
2018-12-12 | GSE121995 | GEO
Project description:We report the study of the mechanism of action of Porphyromonas gingivalis on human oral epithelial cells based on high-throughput sequencing technology. By acting Porphyromonas gingivalis and its metabolites on human oral epithelial cells separately, the mechanism of Porphyromonas gingivalis evading immune surveillance and causing local and deep tissue diffusion to induce systemic diseases was studied. This study provides a framework for studying the pathogenic mechanism of Porphyromonas gingivalis.
2023-02-21 | GSE192887 | GEO
Project description:Bone marrow-derived macrophages (BMMs) from Itga9-Lyz2-cKO and Itga9-Lyz2-cHet mice were stimulated with Porphyromonas gingivalis (Pg) for 2 hours, then subjected to mRNA sequencing.
2024-08-14 | GSE274669 | GEO
Project description:Porphyromonas gingivalis is a keystone oral pathogen that successfully manipulates the human innate immune defenses, resulting in a chronic pro-inflammatory state of periodontal tissues and beyond. Here we demonstrate that secreted outer membrane vesicles (OMVs) are deployed by P. gingivalis to selectively coat and activate human neutrophils, thereby provoking degranulation without neutrophil killing. Secreted granule components with antibacterial activity, especially LL-37 and MPO, are subsequently degraded by potent OMV-bound proteases known as gingipains, thereby ensuring bacterial survival. In contrast to neutrophils, the P. gingivalis OMVs are efficiently internalized by macrophages and epithelial cells. Importantly, we show that neutrophil coating is a conserved feature displayed by OMVs of at least one other oral pathogen, namely Aggregatibacter actinomycetemcomitans. Altogether, we conclude that P. gingivalis deploys its OMVs for a neutrophil-deceptive strategy to escape phagocytosis and to create a favorable inflammatory niche.
2022-08-16 | PXD026704 | Pride
Project description:Wild type Porphyromonas gingivalis strain ATCC33277 (V3176) and PG1626 - deficient mutant (V3177) were grown in iron replete conditions was used to compare to Porphyromonas gingivalis strains grown in iron chelated conditions.
2023-06-08 | GSE174493 | GEO
Project description:Investigation of whole genome gene expression level changes in Porphyromonas gingivalis ATCC 33277 treated with an anti-adhesive extract from Myrothamnus flabellifolia compared to the untreated strain. Aim: Identification of anti-adhesive plant extracts against cell surface binding of Porphyromonas gingivalis. Materials and Methods: Polyphenol-enriched extract from Myrothamnus flabellifolia (MF) traditionally used for periodontitis was tested for inhibition of P. gingivalis adhesion to KB cells by FACS, for influence on gingipain activity, hemagglutination and by microarray analysis for effects on the bacterial transcriptome. P. gingivalis-induced inflammation parameters were monitored by RT-PCR. Results: MF (100 µg/ml) reduced P. gingivalis adhesion/invasion about 50% by interacting with fimbriae and bacterial OMPs. Microarray analysis of MF-treated bacteria indicated up-regulation of genes involved in cell adhesion. As confirmed by RT-PCR, fimbrillin- and Arg-gingipain-encoding genes were upregulated by MF. On the protein level, inhibition (70%) of Arg-gingipain activity was observed, while the corresponding Lys-gingipain was hardly influenced. MF also inhibited hemagglutination. While exposure to P. gingivalis resulted in an increased expression of inflammation-related genes in KB cells, pretreatment of KB cells with MF evoked cytoprotective effects concerning IL-1β, IL-6, IL-8 and TNFα gene expression as well as IL-6 release rates. Conclusions: While being cytoprotective, MF exerts strong anti-adhesive effects against P. gingivalis. Thus, MF may be useful for the prevention of P. gingivalis-associated periodontal diseases. The chip study used total RNA recovered from two separate MF-treated and two separate untreated Porphyromonas gingivalis ATCC 33277 cultures. Each chip measured the expression level of 1,842 genes from P. gingivalis ATCC 33277 with thirteen 60-mer probes per gene, with three-fold technical redundancy.
2010-09-02 | E-GEOD-23939 | biostudies-arrayexpress
Project description:RNA-Seq of wild-type Porphyromonas gingivalis compared to ΔPGN_1524 mutant Illumina based RNA-Seq was used to probe transcriptome differences between wild-type Porphyromonas gingivalis and ΔPGN_1524 mutant
2014-07-19 | E-GEOD-55192 | biostudies-arrayexpress
Project description:Porphyromonas gingivalis and Treponema denticola are periodontalpathogens that are associated with the severity and progression of periodontal diseases. This study investigates the gene expression of Porphyromonas gingivalis during co-culture with Treponema denticola
2014-03-31 | E-MTAB-2214 | biostudies-arrayexpress