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Phelligridin D maintains the function of periodontal ligament cells through autophagy in glucose-induced oxidative stress

Journal of Periodontal & Implant Science 2020년 50권 5호 p.291 ~ 302
김지은, 김태건, 이영희, 이호근,
소속 상세정보
김지은 ( Kim Ji-Eun ) - Chonbuk National University School of Dentistry Department of Oral Biochemistry
김태건 ( Kim Tae-Gun ) - Chonbuk National University School of Dentistry Department of Oral Biochemistry
이영희 ( Lee Young-Hee ) - Chonbuk National University School of Dentistry Department of Oral Biochemistry
이호근 ( Yi Ho-Keun ) - Chonbuk National University School of Dentistry Department of Oral Biochemistry

Abstract


Purpose: The objective of this study was to investigate whether phelligridin D could reduce glucose-induced oxidative stress, attenuate the resulting inflammatory response, and restore the function of human periodontal ligament cells (HPDLCs).

Methods: Primary HPDLCs were isolated from healthy human teeth and cultured. To investigate the effect of phelligridin D on glucose-induced oxidative stress, HPDLCs were treated with phelligridin D, various concentrations of glucose, and glucose oxidase. Glucose-induced oxidative stress, inflammatory molecules, osteoblast differentiation, and mineralization of the HPDLCs were measured by hydrogen peroxide (H2O2) generation, cellular viability, alkaline phosphatase (ALP) activity, alizarin red staining, and western blot analyses.

Results: Glucose-induced oxidative stress led to increased production of H2O2, with negative impacts on cellular viability, ALP activity, and calcium deposition in HPDLCs. Furthermore, HPDLCs under glucose-induced oxidative stress showed induction of inflammatory molecules (intercellular adhesion molecule-1, vascular cell adhesion protein-1, tumor necrosis factor-alpha, interleukin-1-beta) and disturbances of osteogenic differentiation (bone morphogenetic protein-2, and -7, runt-related transcription factor-2), cementogenesis (cementum protein-1), and autophagy-related molecules (autophagy related 5, light chain 3 I/II, beclin-1). Phelligridin D restored all these molecules and maintained the function of HPDLCs even under glucose-induced oxidative stress.

Conclusions: This study suggests that phelligridin D reduces the inflammation that results from glucose-induced oxidative stress and restores the function of HPDLCs (e.g., osteoblast differentiation) by upregulating autophagy.

키워드

Cementum; Inflammation; Osteogenesis; Periodontitis

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