Weiyu Gong1, Zhiwei Huang1, Yanmei Dong2, Yehua Gan3, Shenglin Li3, Xuejun Gao1, Xiaofeng Chen4. 1. Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, China. 2. Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, China. Electronic address: kqdongyanmei@bjmu.edu.cn. 3. Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China. 4. National Engineering Research Center for Human Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, China.
Abstract
INTRODUCTION: This study aimed to investigate the effects of a novel nano-sized 58S bioactive glass (nano-58S BG) on the odontogenic differentiation and mineralization of human dental pulp cells (hDPCs) in vitro. METHODS: Extractions were prepared by incubating nano-58S BG, 45S5 BG, or 58S BG particulates in Dulbecco modified Eagle medium at 1% w/v for 24 hours and were filtrated through 0.22-μm filters. The supernatants were used as BG extractions. The hDPCs were cultured in nano-58S BG, 45S5 BG, and 58S BG extractions. The proliferation of hDPCs was evaluated using the methylthiazol tetrazolium assay. Odontogenic differentiation was evaluated based on the real-time polymerase chain reaction of differentiation- and mineralization-related genes, namely, alkaline phosphatase (ALP), collagen type I, dentin sialophosphoprotein (DSPP), and dentin matrix protein 1. The gene expressions were verified using ALP activity assessment, immunocytochemistry staining of osteocalcin and DSPP, and mineralization assay using alizarin red S stain. RESULTS: All BG extractions up-regulated the expression of odontogenic genes, and the most significant enhancement was in the nano-58S BG group. All BG extractions, especially nano-58S, increased ALP activity, osteocalcin and DSPP protein production, and mineralized nodules formation. CONCLUSIONS: Compared with regular BG, the novel nano-58S BG can induce the differentiation and mineralization of hDPCs more efficiently and might be a better potential candidate for dentin-pulp complex regeneration.
INTRODUCTION: This study aimed to investigate the effects of a novel nano-sized 58S bioactive glass (nano-58S BG) on the odontogenic differentiation and mineralization of human dental pulp cells (hDPCs) in vitro. METHODS: Extractions were prepared by incubating nano-58S BG, 45S5 BG, or 58S BG particulates in Dulbecco modified Eagle medium at 1% w/v for 24 hours and were filtrated through 0.22-μm filters. The supernatants were used as BG extractions. The hDPCs were cultured in nano-58S BG, 45S5 BG, and 58S BG extractions. The proliferation of hDPCs was evaluated using the methylthiazol tetrazolium assay. Odontogenic differentiation was evaluated based on the real-time polymerase chain reaction of differentiation- and mineralization-related genes, namely, alkaline phosphatase (ALP), collagen type I, dentin sialophosphoprotein (DSPP), and dentin matrix protein 1. The gene expressions were verified using ALP activity assessment, immunocytochemistry staining of osteocalcin and DSPP, and mineralization assay using alizarin red S stain. RESULTS: All BG extractions up-regulated the expression of odontogenic genes, and the most significant enhancement was in the nano-58S BG group. All BG extractions, especially nano-58S, increased ALP activity, osteocalcin and DSPP protein production, and mineralized nodules formation. CONCLUSIONS: Compared with regular BG, the novel nano-58S BG can induce the differentiation and mineralization of hDPCs more efficiently and might be a better potential candidate for dentin-pulp complex regeneration.
Authors: Yasmine Elhamouly; Rania M El Backly; Dalia M Talaat; Samia S Omar; Maha El Tantawi; Karin M L Dowidar Journal: Clin Oral Investig Date: 2021-01-06 Impact factor: 3.573
Authors: Saeed Farzad-Mohajeri; Mir Sepehr Pedram; Nasrin Saeedifar; Fatemeh Mashhadi-Abbas; Mohammad Mehdi Dehghan; Naghmeh Bahrami; Sedighe Sadat Hashemikamangar Journal: Vet Res Forum Date: 2022-06-15 Impact factor: 0.950