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[Role of P2X7 receptor in osteogenic differentiation of human periodontal ligament stem cells].

Shanghai Kou Qiang Yi Xue. 2020 Aug;29(4):370-374
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摘要


PURPOSE:To investigate the role of P2X7 receptor (P2X7r) in osteogenic differentiation of human periodontal ligament stem cells (hPDLSCs). METHODS:hPDLSCs were isolated from the premolars collected in the First Affiliated Hospital of Guiyang University of Traditional Chinese Medicine, and divided into four groups. Group A was cultured in conventional medium, group B was cultured in osteogenic induction medium, group C was cultured in osteogenic induction medium + 100 nmol/L adenosine triphosphate (ATP) solution, and group D was cultured in osteogenic induction medium + 100 nmol/L P2X7 receptor specific antagonist KN-62. After 7 days, alizarin red staining was used to observe the osteogenic effect of hPDLSCs in each group. The mRNA expression of osteocalcin (OCN), RUNX2 and P2X7r in hPDLSCs was detected by real-time PCR reaction (RT-PCR). The data were processed by SPSS 22.0 software package. RESULTS:Alisarin red staining showed that the morphology of hPDLSCs cells in group B and group C was significantly changed. The pale calcified nodules in group C were significantly more than those in group B, while very few calcified nodules were found in group A and group D. The mRNA expression of OCN, RUNX2 and P2X7r in hPDLSCs were the highest in group C, followed by group B(P<0.05), and no difference was found between group A and group D(P>0.05). CONCLUSIONS:P2X7 receptor can promote osteogenic differentiation of human periodontal ligament stem cells after being activated by ATP, which may provide a new direction for clinical treatment of periodontitis.

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