Static Magnetic Field-induced IL-6 Secretion in Periodontal Ligament Stem Cells Accelerates Orthodontic Tooth Movement

Overview

Journal Sci Rep

Specialty Science

Date 2024 Apr 29

PMID 38684732

Authors

Shitong Luo

Zhilian Li

Lizhiyi Liu

Juan Zhao

Wenbin Ge

Kun Zhang

Zhi Zhou

Yali Liu

Affiliations

Soon will be listed here.

Abstract

Static magnetic field (SMF) promoting bone tissue remodeling is a potential non-invasive therapy technique to accelerate orthodontic tooth movement (OTM). The periodontal ligament stem cells (PDLSCs), which are mechanosensitive cells, are essential for force-induced bone remodeling and OTM. However, whether and how the PDLSCs influence the process of inflammatory bone remodeling under mechanical force stimuli in the presence of SMFs remains unclear. In this study, we found that local SMF stimulation significantly enhanced the OTM distance and induced osteoclastogenesis on the compression side of a rat model of OTM. Further experiments with macrophages cultured with supernatants from force-loaded PDLSCs exposed to an SMF showed enhanced osteoclast formation. RNA-seq analysis showed that interleukin-6 (IL-6) was elevated in force-loaded PDLSCs exposed to SMFs. IL-6 expression was also elevated on the pressure side of a rat OTM model with an SMF. The OTM distance induced by an SMF was significantly decreased after injection of the IL-6 inhibitor tocilizumab. These results imply that SMF promotes osteoclastogenesis by inducing force-loaded PDLSCs to secrete the inflammatory cytokine IL-6, which accelerates OTM. This will help to reveal the mechanism of SMF accelerates tooth movement and should be evaluated for application in periodontitis patients.

Citing Articles

Effect of Mechanical Force Stress on the Inflammatory Response in Human Periodontal Ligament Cells.

Rojasawasthien T, Srithanyarat S, Bulanawichit W, Osathanon T Int Dent J. 2024; 75(1):117-126.

PMID: 39730290 PMC: 11806315. DOI: 10.1016/j.identj.2024.12.001.

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