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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