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               ·150 ·                          南   京 医 科       大 学      学 报                        2024年2月






                       control PNU⁃282987 PNU⁃282987+CaCl2  COL⁃I GAPDH  1.5  ***  *  DSPP/GAPDH  1.5  ***  ***  *  OPN/GAPDH  1.5  *  ***  ***
                                                                        1.0
                                                                                              1.0
                                                  1.0
                              CaCl2
                 COL⁃1              -139 kDa      0.5  ***              0.5                   0.5
                  DSPP              -131 kDa
                                                   0                     0                     0
                  OPN               -70 kDa
                                                    control
                                                                          control
                                                                                               control
                                                    PNU⁃282987 CaCl2     PNU⁃282987 CaCl2      PNU⁃282987 CaCl2
                  ALP               -57 kDa           PNU⁃282987+CaCl2      PNU⁃282987+CaCl2     PNU⁃282987+CaCl2
                RUNX2               -56 kDa
                  OSX               -40 kDa
                                                  1.5                                         1.5
                                                          ***           1.5     ***                   ***
                GAPDH               -36 kDa       1.0   **    **                   ***        1.0        ***
                                                  ALP GAPDH  0.5       GAPDH  1.0  **        OSX GAPDH  0.5  ***
                                                                        0.5
                                                   0                   RUNX2  0                0
                                                    PNU⁃282987 CaCl2     PNU⁃282987 CaCl2      PNU⁃282987 CaCl2
                                                                                               control
                                                    control
                                                                                                 PNU⁃282987+CaCl2
                                                      PNU⁃282987+CaCl2
                                                                          control
                                                                            PNU⁃282987+CaCl2
                                                   *      **     ***
                                                    P < 0.05,P < 0.01, P < 0.001.
                                                    2+
                             图5 活化α7⁃nAChR联合Ca 对LPS刺激的DPSC牙/骨向分化相关蛋白表达的影响
              Figure 5  Effects ofactivation of α7⁃nAChR combined with Ca on the expression of odontogenic/osteogenic related proteins
                                                               2+
                      in DPSCs stimulated by LPS
                              10       ***              6       ***             10        ***
                           relative  mRNA expression  8 6  *  **  relative  mRNA expression  4  ***  ***  relative  mRNA expression  8 6  ***  ***

                           COL⁃I  4 2                DSPP  2                 OPN  4 2

                               0                        0                        0
                                                         PNU⁃282987
                                PNU⁃282987  CaCl2        control PNU⁃282987+CaCl2  control PNU⁃282987+CaCl2
                                                                                   PNU⁃282987
                                control
                                                                CaCl2
                                   PNU⁃282987+CaCl2
                                                                                          CaCl2
                              8       ***               6       ***              15      ***
                           relative  mRNA expression  6 4  *  **  RUNX2 relative  mRNA expression  4  *  ***  relative  mRNA expression  10  *  ***

                           ALP  2                       2                    OSX  5

                              0                         0                        0
                               PNU⁃282987  CaCl2         PNU⁃282987  CaCl2        control PNU⁃282987+CaCl2
                               control
                                                                                  PNU⁃282987
                                                         control
                                   PNU⁃282987+CaCl2
                                                                                          CaCl2
                                                            PNU⁃282987+CaCl2
                                                   *      **     ***
                                                    P < 0.05,P < 0.01, P < 0.001.
                                                     2+
                             图6 活化α7⁃nAChR联合Ca 对炎症环境下DPSC牙/骨向分化相关基因表达的影响
              Figure 6  Effects of activation of α7⁃nAChR combined with Ca on the expression of odontogenic/osteogenic related genes
                                                                2+
                       in DPSC under inflammatory conditions
              后,Ca 内流最明显(图8)。                                   外实验中模拟炎症环境刺激 DPSC,获得分化功能
                   2+
                                                                受损的 DPSC 炎症反应        [12] 。已有研究证明,大肠杆
              3  讨 论
                                                                菌来源的LPS显著减少了DPSC中的矿化物质沉积,
                  LPS 是革兰氏阴性菌外膜的成分,广泛用于体                        降低了 DPSC 的功能分化         [13] ,因此本研究参考文献
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