Effect of ursolic acid on osteogenic differentiation of human periodontal ligament stem cells#br#

doi:10.12307/2025.031

Abstract

Abstract: BACKGROUND: Ursolic acid can promote the directed differentiation of bone marrow mesenchymal stem cells into osteoblasts. However, there are few reports on whether ursolic acid has osteogenic effect on human periodontal ligament stem cells.
OBJECTIVE: To investigate the effect of ursolic acid on proliferation and osteogenic differentiation of human periodontal ligament stem cells.
METHODS: The human periodontal ligament stem cells were isolated and cultured. Passage 3 cells were selected and treated with ordinary medium containing different concentrations (0, 1, 2, 4, 6, 8 μmol/L) of ursolic acid. After intervention for 1, 3, 5, 7 days, the cell proliferation was detected by CCK-8 assay and the appropriate intervention concentration was screened. Passage 3 human periodontal ligament stem cells were treated with osteogenic induction solution containing 0, 1, 2, 4 μmol/L ursolic acid, respectively. After 7 days of intervention, the mRNA expressions of alkaline phosphatase, Runx2, and osteocalcin were detected by qRT-PCR. After 14 days of intervention, the formation of mineralized nodules was observed by alizarin red staining. Passage 3 human periodontal ligament stem cells were taken and the control group was added with osteogenic induction solution; the ursolic acid group and the antagonist group were added with osteogenic induction solution containing ursolic acid (2 μmol/L) and the bone morphogenetic protein signaling pathway antagonist Noggin, respectively. The ursolic acid+antagonist group was added with osteogenic induction solution containing ursolic acid (2 μmol/L) and Noggin, the inhibitor of bone morphogenetic protein signaling pathway, and cultured for 7 days. qRT-PCR and western blot assay were used to detect the mRNA and protein expressions of bone morphogenetic protein 2, Smad1, osteopontin, and Runx2.
RESULTS AND CONCLUSION: (1) 1, 2, 4 μmol/L ursolic acid could promote the proliferation of human periodontal ligament stem cells. 6, 8 μmol/L ursolic acid could inhibit the proliferation of human periodontal ligament stem cells, and 1, 2, 4 μmol/L ursolic acid was selected to intervene in subsequent experiments. (2) Compared with 0 μmol/L, 1, 2, 4 μmol/L ursolic acid could promote the expression of alkaline phosphatase, Runx2, and osteocalcin mRNA and the formation of mineralized nodules (P < 0.05), and the effect of 2 μmol/L ursolic acid was the most significant. (3) Compared with the control group, the mRNA and protein expressions of bone morphogenetic protein 2, Smad1, osteopontin, and Runx2 in the ursolic acid group were increased (P < 0.05), while mRNA and protein expressions of the above indexes were decreased in the antagonist group (P < 0.05). Compared with the ursolic acid group, mRNA and protein expressions of above indexes were decreased in ursolic acid+antagonist group (P < 0.05). (4) The results indicate that ursolic acid promotes osteogenic differentiation of human periodontal ligament stem cells through bone morphogenetic protein signaling pathway.

Key words: human periodontal ligament stem cell, ursolic acid, osteogenesis, bone morphogenetic protein signaling pathway, alkaline phosphatase, osteocalcin, bone morphogenetic protein 2, Smad1 protein

CLC Number:

Zheng Qian, Liu Pingping, Gu Yujie, Xie Lei. Effect of ursolic acid on osteogenic differentiation of human periodontal ligament stem cells#br#[J]. Chinese Journal of Tissue Engineering Research, 2025, 29(1): 80-86.

Figures/Tables 4

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