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Three-dimensional Inflammatory Human Tissue Equivalents of Gingiva
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TlR expression profile of human gingival margin-derived stem progenitor cells
Karim Fawzy-El-Sayed1, Mohamed Mekhemar, Sabine Adam-Klages
1Clinic for Conservative Dentistry and Periodontology, School of Dental Medicine, Christian Albrechts-Universität zu Kiel, Arnold-Heller-Str. 3, Haus 26, 24105 Kiel, Germany, karim.fawzy@gmail.com.
Medicina Oral, Patologia Oral Y Cirugia Bucal
|November 30, 2015
Summary
Gingival margin-derived stem cells (G-MSCs) express toll-like receptors (TLRs) 1-7 and 10 in basic conditions. Inflammation alters this profile, upregulating most TLRs and downregulating TLR 6.
Area of Science:
- Stem Cell Biology
- Immunology
- Periodontal Regeneration
Background:
- Gingival margin-derived stem/progenitor cells (G-MSCs) possess significant periodontal regenerative capabilities.
- G-MSCs may interact with inflammatory signals through toll-like receptors (TLRs) during regeneration.
Purpose of the Study:
- To characterize the toll-like receptor (TLR) expression profile of G-MSCs.
- To investigate how inflammatory conditions affect TLR expression in G-MSCs.
Main Methods:
- Gingival margin cells were isolated, sorted using STRO-1 magnetic beads, and cultured to form colony-forming units (CFUs).
- G-MSCs were characterized for stem cell markers (CD14, CD34, CD45, CD73, CD90, CD105, CD146, STRO-1) and multilineage differentiation potential.
- TLR expression was analyzed after incubating G-MSCs in basic or inflammatory medium (IL-1β, IFN-γ, IFN-α, TNF-α).
Main Results:
- G-MSCs exhibited typical stem/progenitor cell characteristics.
- In basal medium, G-MSCs expressed TLRs 1, 2, 3, 4, 5, 6, 7, and 10.
- Inflammatory medium significantly upregulated TLRs 1, 2, 4, 5, 7, and 10, while downregulating TLR 6 (p≤0.05).
Conclusions:
- This study provides the first detailed TLR expression profile for G-MSCs.
- Distinct TLR expression patterns were observed in G-MSCs under both non-inflammatory and inflammatory conditions.
- Understanding G-MSC TLRs is crucial for their application in periodontal regeneration therapies.
