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• W2945461861 abstract "Exosomes are important mediators of intercellular communication and have a vital part in the diagnosis and treatment of various diseases in humans. Here, we investigated the benefits and underlying mechanism of exosomes secreted via stem cells from human exfoliated deciduous teeth (SHED-derived exosomes) in promoting alveolar bone regeneration, thus providing new insights into exosome-based therapy for periodontitis. SHED-derived exosomes were isolated by ultracentrifugation. The impacts of SHED-derived exosomes on the angiogenic ability of human umbilical vein endothelial cells (HUVECs) and the osteogenic capability of rat bone marrow mesenchymal stem cells (BMSCs) were evaluated in vitro. Compound C, a pharmacological blocker of adenosine monophosphate-activated protein kinase (AMPK), was used to examine the role of the AMPK signaling cascade in these processes. Periodontal defect rat models were established and treated with PBS, β-tricalcium phosphate (β-TCP), or a grouping of exosomes/β-TCP. Microcomputed tomography (micro-CT) scanning, hematoxylin and eosin (HE) staining, Masson staining, and immunofluorescence staining were done to inspect the impacts of the exosomes/β-TCP combination on periodontal bone regeneration. Our outcomes indicated that the expression of angiogenesis-related genes (KDR, SDF-1, and FGF2), osteogenesis-related genes (COL1, RUNX2, and OPN), and phosphorylated (p)-AMPK were upregulated after treatment with exosomes, while the positive impacts of SHED-derived exosomes on HUVECs and BMSCs were partially reversed by compound C. Micro-CT analysis demonstrated that the exosomes/β-TCP group exhibited better bone regeneration than either the β-TCP group or the control group. Additionally, the results of HE and Masson staining as well as immunofluorescence staining showed neovascularization and new bone formation in the exosomes/β-TCP group but only limited new bone formation in the other two groups. Thus, SHED-derived exosomes contribute to periodontal bone regeneration by promoting neovascularization and new bone formation, possibly through the AMPK signaling pathway." @default.
• W2945461861 created "2019-05-29" @default.
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• W2945461861 date "2019-05-25" @default.
• W2945461861 modified "2023-10-14" @default.
• W2945461861 title "Exosomes Secreted by Stem Cells from Human Exfoliated Deciduous Teeth Promote Alveolar Bone Defect Repair through the Regulation of Angiogenesis and Osteogenesis" @default.
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• W2945461861 doi "https://doi.org/10.1021/acsbiomaterials.9b00607" @default.
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• W2945461861 hasPublicationYear "2019" @default.
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