Effect of circRASA2 targeting miR-543/TRAF6 axis on LPS-induced periodontal ligament cell proliferation and osteogenic differentiation

doi:10.19439/j.sjos.2023.02.007

Abstract

Abstract: PURPOSE: To investigate the possible role of circRASA2 in periodontitis and its potential regulatory mechanism. METHODS: Periodontitis cell model was established by lipopolysaccharide(LPS)-induced periodontal ligament cells(PDLCs). Cell proliferation activity was detected by CCK-8 assay, cell migration ability was detected by Transwell chamber assay, and the expression of osteogenic differentiation-related proteins in cells was detected by Western blot. The target miRNA of circRASA2 and its downstream target genes were predicted using the databases circinteractome and starBase, respectively, and the targeting relationship between the target genes was verified by dual-luciferase reporter gene experiment. GraphPad Prism 8.0 software package was used to analyze the data. RESULTS: circRASA2 was highly expressed in LPS-treated PDLCs cells. LPS-induced PDLCs cell proliferation activity, migration ability and osteogenic differentiation ability decreased, while knockdown of circRASA2 promoted proliferation, migration and osteogenic differentiation ability of PDLCs under LPS treatment. circRASA2 targeted and negatively regulated the expression of miR-543, and overexpression of miR-543 promoted proliferation, migration and osteogenic differentiation of PDLCs under LPS treatment. TRAF6 was a downstream target gene of miR-543, knockdown of circRASA2 down-regulated the expression of TRAF6 through the sponge action of miR-543. Overexpression of TRAF6 reversed the promotion of circRASA2 knockdown on proliferation, migration and osteogenic differentiation of PDLCs. CONCLUSIONS: circRASA2 accelerated the pathological process of periodontitis in vitro through miR-543/TRAF6 axis, and might improve periodontitis by targeting down the expression of circRASA2.

Key words: Periodontitis, Periodontal ligament cells, circRASA2, miR-543, TRAF6

CLC Number:

R781.4

XIE Bing, YANG Zhen-yu, TANG Xu-na. Effect of circRASA2 targeting miR-543/TRAF6 axis on LPS-induced periodontal ligament cell proliferation and osteogenic differentiation[J]. Shanghai Journal of Stomatology, 2023, 32(2): 147-153.

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