Journal of Oral Science Research ›› 2020, Vol. 36 ›› Issue (1): 51-55.DOI: 10.13701/j.cnki.kqyxyj.2020.01.013

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Effect of SDF-1 on CXCR4 Expression of Human Periodontal Stem Cell Chemokine Receptor

LIU Pingping, TANG Xiaoying, YUAN Xiaoping*   

  1. Oral & Maxillofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Department of Orthodontics, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China
  • Received:2019-04-01 Online:2020-01-28 Published:2020-01-16

Abstract: Objective: To confirm the effect of human periodontal ligament stem cells (hPDLSCs) on expression of chemokine receptor CXCR4, and the effect of chemokine SDF-1 and blocker AMD3100 on expression of CXCR4. Methods: hPDLSCs were isolated and purified by digestible tissue block method combined with limited dilution method. The third generation of hPDLSCs were randomly divided into three groups: negative control group, SDF-1 group (200μg/L SDF-1), and SDF-1+AMD3100 group (200μg/L SDF-1+10 mg/L AMD3100). Western blotting was used to detect the expression of CXCR4 on hPDLSCs and the expression of CXCR4 under the action of SDF-1 and AMD3100. Results: The selected hPDLSCs could be induced to differentiate into osteoblasts and adipocytes. The cell phenotype was detected by flow cytometry to identify the immunophenotype consistent with periodontal ligament stem cells. Western blotting analysis showed that CXCR4 was expressed on hPDLSCs, and the expression of CXCR4 was up-regulated after SDF-1. There was no significant change in SDF-1+AMD3100 group. Conclusion: hPDLSCs could be obtained from the periodontal ligament of fresh isolated teeth and purified as a mesenchymal source after purification by limiting dilution method. The CXCR4 receptor was expressed on hPDLSCs. SDF-1 up-regulated CXCR4 receptor on hPDLSCs, and AMD3100 blocked the binding of SDF-1 to CXCR4 receptor.

Key words: SDF-1, CXCR4, human periodontal ligament stem cells, orthodontic tooth movement, AMD3100