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Gingival Epithelial Cell Responses to a Complex Microbiome Comprising Commensal and Opportunistic Oral Microbial Species

ABSTRACT: Transcriptional profiling was utilized to define the biological pathways of gingival epithelial cells modulated by mono- and complex co-culture with oral commensal S. gordonii and pathogenic P. gingivalis. We used microarrays to detail the global programme of gene expression underlying infection and identified distinct classes of up- and down-regulated genes during this process. Keywords: infection state

ORGANISM(S): Homo sapiens

PROVIDER: GSE12121 | GEO | 2009/07/14

SECONDARY ACCESSION(S): PRJNA113779

REPOSITORIES: GEO

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Gingival Epithelial Cell Transcriptional Responses to Commensal and Opportunistic Oral Microbial Species.

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Transcription profiling of human gingival epithelial cell transcriptional responses to commensal and opportunistic oral microbial species.

Project description:Transcriptional profiling was utilized to define the biological pathways of gingival epithelial cells modulated by co-culture with the oral commensal S. gordonii and the opportunistic commensal F. nucleatum. We used microarrays to detail the global programme of gene expression underlying infection and identified distinct classes of up- and down-regulated genes during this process. Experiment Overall Design: Gingival epithelial HIGK cells were sham infected (CTRL) and infected with either the oral commensal S. gordonii (Sg) or the opportunistic commensal F. nucleatum (Fn). These samples were hybridized to Affymetrix microarrays. Understanding how host cells have adapted to commensals, and how barrier cells respond to limit their impact, provides a mechanistic biological basis of health in the mixed bacterial-human ecosystem of the oral cavity.

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Project description:Transcriptional profiling was utilized to define the biological pathways of gingival epithelial cells modulated by mono- and complex co-culture with oral commensal S. gordonii and pathogenic P. gingivalis. We used microarrays to detail the global programme of gene expression underlying infection and identified distinct classes of up- and down-regulated genes during this process. Experiment Overall Design: Gingival epithelial HIGK cells were sham infected (CTRL) and infected with either the oral commensal S. gordonii (Sg) or the pathogenic P. gingivalis (Pg) as well as co-cultured in mixed cultures of Sg and Pg (Sg+Pg). These samples were hybridized to Affymetrix microarrays. Understanding how host cells have adapted to commensals, and how barrier cells respond to limit their impact, provides a mechanistic biological basis of health in the mixed bacterial-human ecosystem of the oral cavity and provides insight on how the degree of complexity of a microbiome influences this balance.

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Project description:Transcriptional profiling was utilized to define the biological pathways of gingival epithelial cells modulated by co-culture with the oral pathogenic Porphyromonas gingivalis and Aggregatibacter (formerly actinobacillus) actinomycetemcomitans. We used microarrays to detail the global programme of gene expression underlying infection and identified distinct classes of up- and down-regulated genes during this process. Experiment Overall Design: Gingival epithelial HIGK cells were sham infected (CTRL) and infected with either the oral pathogenic P. gingivalis (Pg) or A. actinomycetemcomitans (Aa). These samples were hybridized to Affymetrix microarrays. Understanding how host cells have adapted to pathogens, and how barrier cells respond to limit their impact, provides a mechanistic biological basis of microbial disease in the mixed bacterial-human ecosystem of the oral cavity.

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Effect of P. gingivalis on human primary gingival epithelial cells

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2008-11-07 | GSE13042 | GEO

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2010-05-16 | E-GEOD-13042 | biostudies-arrayexpress

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Project description: Not available

| S-EPMC1865734 | biostudies-literature

Differential miRNA expression in gingival epithelial cells infected with Porphyromonas gingivalis

Project description:Porphyromonas gingivalis is a pathogen in severe periodontal disease. Able to exploit an intracellular lifestyle within primary gingival epithelial cells (GECs), a reservoir of P. gingivalis can persist within the gingival epithelia. This process is facilitated by manipulation of the host cell signal transduction cascades which can impact cell cycle, cell death and cytokine responses. Using microarrays, we investigated the ability of P. gingivalis 33277 to regulate microRNA (miRNA) expression in GECs. One of several miRNAs differentially regulated by GECs in the presence of P. gingivalis was miR-203, which was upregulated 4-fold compared with uninfected controls. Differential regulation of miR-203 was confirmed by qRT-PCR. Putative targets of miR-203, suppressors of cytokine signaling (SOCS) 3 and 6, were evaluated by qRT-PCR. SOCS3 and SOCS6 mRNA levels were reduced >5-fold and >2-fold, respectively, in P. gingivalis-infected GECs compared with controls. Silencing miR-203 using a si-RNA construct reversed the inhibition of SOCS3 expression. A dual luciferase assay confirmed binding of miR-203 to the putative target binding site of SOCS3 3’ UTR. Western blot analysis demonstrated that activation of Stat3, a downstream target of SOCS, was diminished following miR-203 silencing. This study shows that induction of miRNAs by P. gingivalis can modulate important host signaling responses.

2011-04-15 | GSE28635 | GEO

Transcription profiling of human oral keratinocytes was utilized to define the biological role of P. gingivalis in gingival epithelial cell cytoskeletal remodeling and cytokine production

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2008-06-18 | E-GEOD-10526 | biostudies-arrayexpress

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