IFN-γ induces the migration of human dental pulp stem cells by regulating the Wnt signaling pathway,and inhibits the effect of osteogenic differentiation on pulp injury repair
10.3969/j.issn.1001-3733.2025.03.007
- VernacularTitle:IFN-γ通过调控Wnt信号通路诱导人牙髓干细胞迁移抑制成骨向分化对牙髓损伤修复的影响
- Author:
Nuo CHENG
1
;
Xiyuan CHEN
;
Siqi ZHU
;
Hongmin YIN
Author Information
1. 646099 泸州,西南医科大学附属口腔医院口腔预防保健科
- Publication Type:Journal Article
- Keywords:
IFN-γ;
Wnt signaling pathway;
Human dental pulp stem cells;
Osteogenic differentiation;
Dental pulp injury re-pair
- From:
Journal of Practical Stomatology
2025;41(3):344-350
- CountryChina
- Language:Chinese
-
Abstract:
Objectives:To investigate the effect of interferon-γ(IFN-γ)on the repair of dental pulp injury.Methods:hDPSCs were isolated and cultured,and the hDPSCs were divided into control group,0.05 ng/mL IFN-γ group,0.5 ng/mL IFN-γ group,5 ng/mL IFN-γ group and 0.5 ng/mL IFN-γ+PDTC group.Transwell was used to detect the effect of IFN-γ on the migration abil-ity of human dental pulp stem cells,alizarin red staining was used to evaluated the influence of IFN-γ on the osteogenic differentia-tion of hDPSCs,and the expression of protein related to Wnt/β-catenin signaling pathway in cells was detected by Western blot.The rat dental pulp mechanical injury model was established,and the 3D cultured hDPSCs cell mass and hDPSCs cell mass with 0.5 ng/mL IFN-γ were placed in the cavity of the established rat dental pulp injury model.The cavity was filled with glass ionomer,and HE staining was used to compare the repair of dental pulp tissue in each group of rats.Results:The number of migrating cells in dif-ferent concentrations of IFN-γ groups was significantly higher than that in the control group,and the difference was statistically signif-icant(P＜0.05),and the number of migrated cells in the 0.5 ng/mL IFN-γ group was more than that in the 0.05 ng/mL IFN-γgroup and the 5 ng/mL IFN-γ group(P＜0.05).Compared with the control group,the mineralized nodules and osteoblastic differ entiation of hDPSCs in different concentrations IFN-γgroups were significantly inhibited(P＜0.05).Compared with the 0.5 ng/mL IFN-γ group,the mineralized nodule formation and osteogenic differentiation of hDPSCs in the 0.5 ng/mL IFN-γ+PDTC group were enhanced(P＜0.05).Compared with the control group,the ALP activity of IFN-γ group and IFN-γ+PDTC group was significantly lower(P＜0.05),and the ALP activity of IFN-γ+PDTC group was higher than that of IFN-γgroup,and the difference between groups was statistically significant(P＜0.05).Compared with the control group,the protein ex-pression levels of Wnt1,β-catenin,RUNX2,CyclinD1 and OCN in the IFN-γ group and IFN-γ+PDTC group were significantly decreased,while the GSK-3β and p-GSK-3β had increased,and the difference between the groups was statistically significant(P＜0.05),the protein expressions of Wnt1,β-catenin,RUNX2,CyclinD1 and OCN in the IFN-γ+PDTC group were significantly higher than those in the IFN-γ group,while the protein expression levels of p-GSK-3β and GSK-3β were lower than those in the IFN-γ group,and the differences between the groups were statistically significant(P＜0.05).Compared with the control group,the inflammatory response in the dental pulp mechanical injury model of the IFN-γ group was aggravated,and the dentin formation was significantly inhibited.Conclusion:IFN-γ can promote the migration of hDPSCs and inhibit the osteogenic differentiation of hDP-SCs,and IFN-γ has an inhibitory effect on the formation of restorative dentin after pulp injury,which may be related to the expres-sion regulation of Wnt signaling pathway.
