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Osteogenic potential of periodontal ligament stem cells are unaffected after exposure to lipopolysaccharides
ALBIERO, Mayra Laino; AMORIM, Bruna Rabelo; CASATI, Márcio Zaffalon; SALLUM, Enilson Antonio; NOCITI JUNIOR, Francisco Humberto; SILVÉRIO, Karina Gonzales.
  • ALBIERO, Mayra Laino; Universidadade de Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontics. Piracicaba. BR
  • AMORIM, Bruna Rabelo; Universidadade de Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontics. Piracicaba. BR
  • CASATI, Márcio Zaffalon; Universidadade de Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontics. Piracicaba. BR
  • SALLUM, Enilson Antonio; Universidadade de Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontics. Piracicaba. BR
  • NOCITI JUNIOR, Francisco Humberto; Universidadade de Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontics. Piracicaba. BR
  • SILVÉRIO, Karina Gonzales; Universidadade de Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontics. Piracicaba. BR
Braz. oral res. (Online) ; 31: e17, 2017. tab, graf
Article in English | LILACS | ID: biblio-839523
ABSTRACT
Abstract Periodontitis develops as a result of a continuous interaction between host cells and subgingival pathogenic bacteria. The periodontium has a limited capacity for regeneration, probably due to changes in periodontal ligament stem cells (PDLSCs) phenotype. The aim of this study was to evaluate the effects of lipopolysaccharides from Porphyromonas gingivalis (PgLPS) on mesenchymal phenotype and osteoblast/cementoblast (O/C) potential of PDLSCs. PDLSCs were assessed for Toll-like receptor 2 (TLR2) expression by immunostaining technique. After, cells were exposed to PgLPS, and the following assays were carried out (i) cell metabolic activity using MTS; (ii) gene expression for IL-1β, TNF-α and OCT-4 by real-time polymerase chain reaction (RT-qPCR); (iii) flow cytometry for STRO-1 and CD105, and (iv) osteogenic differentiation. PDLSCs were positive for TLR2. PgLPS promoted cell proliferation, produced IL-1β and TNF-α, and did not affect the expression of stem cell markers, STRO-1, CD105 and OCT-4. Under osteogenic condition, PDLSCs exposed to PgLPS showed a similar potential to differentiate toward osteoblast/cementoblast phenotype compared to control group as revealed by mineralized matrix deposition and levels of transcripts for RUNX2, ALP and OCN. These results provide evidence that PgLPS induces pro-inflammatory cytokines, but does not change the mesenchymal phenotype and osteoblast/cementoblast differentiation potential of PDLSCs.
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Full text: Available Index: LILACS (Americas) Main subject: Osteogenesis / Periodontal Ligament / Lipopolysaccharides / Porphyromonas gingivalis / Mesenchymal Stem Cells Limits: Humans Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2017 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Universidadade de Campinas/BR

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Full text: Available Index: LILACS (Americas) Main subject: Osteogenesis / Periodontal Ligament / Lipopolysaccharides / Porphyromonas gingivalis / Mesenchymal Stem Cells Limits: Humans Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2017 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Universidadade de Campinas/BR