MiR-508-5p Suppresses Osteogenic Differentiation of Human Periodontal Ligament Stem Cells Via Targeting Sex-determining Region Y-related HMG-box 11

Overview

Journal J Dent Sci

Date 2025 Jan 28

PMID 39873049

Authors

Jing Guo

Xiang-Ying Ouyang

Jian-Ru Liu

Wen-Yi Liu

Yuan-Bo Wang

Affiliations

Soon will be listed here.

Abstract

Background/purpose: The local inflammatory microenvironment created by periodontitis negatively impacts periodontal tissue regeneration, necessitating the development of methods to enhance the regenerative capacity of stem cells. This study explored the regulatory role and underlying mechanism of miR-508-5p in the osteogenic differentiation of human periodontal ligament stem cells (hPDLSCs).

Materials And Methods: The regulatory roles of miR-508-5p in osteogenic differentiation of hPDLSCs were investigated through its inhibition or overexpression. Expression of the sex-determining region Y-related HMG-box 11 (SOX11) and osteogenic markers was analyzed using Western blot and real-time PCR. Osteogenesis was measured using alizarin red S (ARS) staining and alkaline phosphatase (ALP) staining. A dual luciferase reporter assay was performed to confirm SOX11 as a target of miR-508-5p.

Results: During the osteogenic differentiation of hPDLSCs, miR-508-5p expression level gradually decreased, while that of SOX11 increased. miR-508-5p inhibition significantly promoted osteogenesis in hPDLSCs, while overexpression inhibited the process. SOX11 overexpression reversed the suppressive effects of miR-508-5p on the osteogenic differentiation of hPDLSCs. miR-508-5p downregulation significantly increased SOX11; a dual luciferase reporter assay provided evidence for their direct targeting.

Conclusion: miR-508-5p downregulation promotes the osteogenic differentiation of hPDLSCs by targeting SOX11.

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