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Odontology

Odontology

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Shikonin promotes rat periodontal bone defect repair and osteogenic differentiation of BMSCs by p38 MAPK pathway

Published:1 July 2023 DOI: 10.1007/s10266-022-00774-w PMID: 36469160
Xiaoxin Lin, Yuxin Wang, Xiaoli Guo, Chen Li, Kuaifeng Wu, Siya Wang, Xijiao Yu, Yi Du

Abstract

In recent years, the treatment of periodontal bone defect has been a major challenge. Cell-based bone tissue engineering provides an advanced way for bone regeneration. Bone formation hinges on the potential of osteogenesis in bone marrow stromal cells (BMSCs). Shikonin (SHI), an active principle of Radix Lithospermi, has shown a striking role to mitigate osteoporosis of ovariectomized mice, whereas its effects on periodontal bone defect are vague. Herein, we explored the impact of SHI on osteogenic differentiation of BMSCs in vitro and further analyzed the potential mechanisms using an inhibitor of p38 MAPK (SB203580). A rat periodontal bone defect model was built to assess its effects on bone formation in vivo by micro-CT and immunofluorescence. Our results showed SHI with no cytotoxicity could conspicuously enhanced alkaline phosphatase (ALP) activity, calcium accumulation and the expression of runt-related transcription factor 2 (Runx2) and osteocalcin (OCN) of BMSCs in vitro. Increased bone volume/tissue volume (BV/TV) and osteopontin (OPN) expression after SHI administration further demonstrated the capacity of promoting osteogenesis of SHI in vivo. Furthermore, SHI could also increase the phosphorylation of p38. However, the phosphorylation of p38 and expression of osteogenic indicators promoted by SHI were reversed by SB203580, thereby illustrating the positive regulatory relationship between p38 MAPK and SHI-mediated osteogenesis. This finding may help SHI become a promising agent with respect to the therapy of periodontal bone defect.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
SB 203580 152121-47-6 C21H16FN3OS 320 suppliers $16.00-$2151.00
SB 203580 152121-47-6 C21H16FN3OS 320 suppliers $16.00-$2151.00
SB 203580 152121-47-6 C21H16FN3OS 320 suppliers $16.00-$2151.00
SB 203580 152121-47-6 C21H16FN3OS 320 suppliers $16.00-$2151.00

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