Sg SCS suppresses inflammation and oral microbiome
Ontology highlight
ABSTRACT: To investigate the properties of Sg spent culture supernatant (SCS) on the proliferation of periodontal pathogens and the expression of proinflammatory cytokines by human macrophages, epithelial cells, and gingival fibroblasts.
Project description:Mesenchymal stem cells (MSCs) isolated from human gingival tissue and periodontal ligament (PDL) have shown potential for periodontal regeneration. Although PDL-MSCs have been recognized as the best choic for cell-based periodontal regeneration, isolation of PDL-MSCs required tooth extraction which is impractical for clinical use. Supracrestal gingival connective tissue (SG) is a part of gingival tissue which located closely to PDL and can be harvested without tooth extraction. Here, the characteristics of MSCs derived from SG was evaluated. Differential gene expression profiles of hSG-MSCs, hPDL-MSCs, and human marginal gingival tissue (MG)-derived MSCs were compared. Results demonstrated that hSG-MSCs had a more similar gene expression profile to the hPDL-MSCs than the hMG-MSCs, suggested a potential candidate cell source of SG for future peridontal tissue engineering.
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.
Project description:The purpose of this study was to determine, at a global level, the transcriptomic responses of human gingival keratinocytes to T. denticola infection to better understand the disruption of normal barrier immunity that leads to the development of periodontal disease.
Project description:The normal epithelium derived stromal cells included ECM, normal fibroblast, mesenchymal stromal cells and osteoblast also plays a significant role in the progress of cancers but poorly investigated in the progress of OSCC. In this study, the stromal cells derived from gingival and periodontal tissues were extracted and human dermal fibroblasts were selected as control group. The differentially expressed genes in Gingival derived stromal cells and Periodontal derived stromal cells were identified by microarray. Furthermore, the biological process, cellular component, molecular function and cell pathways of differentially expressed genes in gingival derived stromal cells and periodontal derived stromal cells were analyzed by GO enrichment analysis and KEGG enrichment analysis respectively. All of these findings could provide potential genes in gingival derived stromal cells and periodontal derived stromal cells that influences the progress of OSCC.
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.