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• W2024269220 abstract "The pivotal role of chemokine stromal cell-derived factor-1 (SDF-1) in bone marrow mesenchymal stem cells recruitment and tissue regeneration has already been reported. However, its roles in human periodontal ligament stem cells (PDLSCs) remain unknown. PDLSCs are regarded as candidates for periodontal tissue regeneration and are used in stem cell-based periodontal tissue engineering. The expression of chemokine receptors on PDLSCs and the migration of these cells induced by chemokines and their subsequent function in tissue repair may be a crucial procedure for periodontal tissue regeneration.PDL tissues were obtained from clinically healthy premolars extracted for orthodontic reasons and used to isolate single-cell colonies by the limited-dilution method. Immunocytochemical staining was used to detect the expression of the mesenchymal stem cell marker STRO-1. Differentiation potentials were assessed by alizarin-red staining and oil-red O staining. The expression of SDF-1 receptor CXCR4 was evaluated by real-time polymerase chain reaction (PCR) and immunocytochemical staining. 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and bromodeoxyuridine incorporation assay were used to determine the viability and proliferation of the PDLSC subpopulation. Expression of collagen type I and alkaline phosphatase was detected by real-time PCR to determine the effect of SDF-1 on cells differentiation.Twenty percent of PDL single-cell colonies expressed STRO-1 positively, and this specific subpopulation was positive for CXCR4 and formed minerals and lipid vacuoles after 4 weeks induction. SDF-1 significantly increased proliferation and stimulated the migration of this PDLSC subpopulation at concentrations between 100 and 400 ng/mL. CXCR4 neutralizing antibody could block cell proliferation and migration, suggesting that SDF-1 exerted its effects on cells through CXCR4. SDF-1 promoted collagen type I level significantly but had little effect on alkaline phosphatase level.SDF-1 may have the potential of promoting periodontal tissue regeneration by the mechanism of guiding PDLSCs to destructive periodontal tissue, promoting their activation and proliferation and influencing the differentiation of these stem cells." @default.
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• W2024269220 date "2012-03-01" @default.
• W2024269220 modified "2023-09-24" @default.
• W2024269220 title "Stromal Cell–Derived Factor-1 Significantly Induces Proliferation, Migration, and Collagen Type I Expression in a Human Periodontal Ligament Stem Cell Subpopulation" @default.
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• W2024269220 doi "https://doi.org/10.1902/jop.2011.110201" @default.
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