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The Role of SDF-1𝛼-CXCR4/CXCR7 in Migration of Human Periodontal Ligament Stem Cells

  • Jialei Xu (State Key Laboratory of Oral Diseases & Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, National Center of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University) ;
  • Fan Yang (State Key Laboratory of Oral Diseases & Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, National Center of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University) ;
  • Shuhan Luo (State Key Laboratory of Oral Diseases & Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, National Center of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University) ;
  • Yuan Gao (State Key Laboratory of Oral Diseases & Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, National Center of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University) ;
  • Dingming Huang (State Key Laboratory of Oral Diseases & Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, National Center of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University) ;
  • Lan Zhang (State Key Laboratory of Oral Diseases & Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, National Center of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University)
  • 투고 : 2022.03.27
  • 심사 : 2022.10.14
  • 발행 : 2023.05.30

초록

Background and Objectives: Regenerative endodontic procedures (REPs) are a research hotspot in the endodontic field. One of the biggest problems of REPs is that it is difficult to realize regeneration of pulp-dentin complex and functional reconstruction. The reason is still not clear. We hypothesize that the migration may be different in different dental stem cells. Periodontal ligament stem cells (PDLSCs) may migrate faster than stem cells of apical papilla (SCAPs), differentiating into cementum-like tissue, bone-like tissue and periodontal ligament-like tissue and, finally affecting the outcomes of REPs. Hence, this study aimed to explore the mechanism that regulates the migration of PDLSCs. Methods and Results: After isolating and culturing PDLSCs and SCAPs from human third molars, we compared the migration of PDLSCs and SCAPs. Then we investigated the role of SDF-1𝛼-CXCR4/CXCR7 axis in PDLSC migration. We further investigated the impact of Porphyromonas gingivalis (P. gingivalis) lipopolysaccharide (LPS) on PDLSC migration and the potential mechanism. PDLSCs showed better migration under both noninflammatory and inflammatory conditions than SCAPs. SDF-1𝛼 can promote the migration of PDLSCs by elevating the expression of CXCR4 and CXCR7, increasing the interaction between them, promoting expression of 𝛽-arrestin1 and activating the ERK signaling pathway. P. gingivalis LPS can promote the migration of PDLSCs toward SDF-1𝛼 through increasing the expression of CXCR4 via the NF-𝜅B signaling pathway, promoting the expression of 𝛽-arrestin1, and activating the ERK signaling pathway. Conclusions: This study helped elucidate the potential reason for the difficulty in forming pulp-dentin complex.

키워드

과제정보

This study was supported by the National Natural Science Foundation of China (No. 81970936).

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