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In this study, we have developed a series of novel gallium oxide doped bioactive glasses to specifically target osteosarcoma cells while aiding new bone formation. The results show that osteosarcoma (Saos-2) cell death is induced through the addition of gallium oxide. Relative to the gallium-free control glass (0% Ga) glasses containing 1, 2, and 3% Ga decreased Saos-2 cell viability in a dose dependent manner. After 72 h in media preconditioned with 3% Ga Saos-2 cell viability was reduced by over 50%. Corresponding studies undertaken on primary normal human osteoblast cells (NHOst) demonstrated no adverse effects to the gallium containing glasses. Hydroxyapatite formation was observed for all glasses when exposed to simulated body fluid.
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http://dx.doi.org/10.1021/acsbiomaterials.7b00283 | DOI Listing |
J Biomed Mater Res B Appl Biomater
September 2025
Abyss Ingredients, Caudan, France.
The development of functional materials for osteoporosis is essential for effective bone remodeling. In this context, the extraction of biocompatible implantable biomaterials from bio-waste emerges as a valuable strategy, addressing both environmental challenges and promoting human health. The objective of this work was to evaluate the physicochemical properties of the added-value by-product biomaterial (SS-90), extracted from sardine scales (Sardina Pilchardus) and combined with chitosan (SS-90-CH).
View Article and Find Full Text PDFInt J Implant Dent
September 2025
Department of Periodontology, Center for Biomedical Education and Research (ZBAF), School of Dentistry, Faculty of Health, Witten/Herdecke University, Witten, Germany.
Background: Guided bone regeneration (GBR) relies on biocompatible membranes to support osteogenesis. 1,4-butanediol diglycidyl ether (BDDE)-crosslinked hyaluronic acid (xHyA) has shown promise in enhancing bone regeneration, yet its mechanisms remain unclear.
Objective: This study evaluates the osteogenic effects of xHyA-functionalized native pericardium collagen membrane (NPCM) and ribose-crosslinked collagen membrane (RCCM) using an airlift culture model with SaOS-2 cells.
Small
September 2025
State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, School of Biomedical Sciences, Hunan University, Changsha, Hunan, 410082, China.
Chemotherapy is often hindered by systemic toxicity and poor selectivity. To address these issues, we develop an enzyme-responsive metallopeptide hydrogel (HY-Pd) that integrates enzyme-instructed self-assembly (EISA) and bioorthogonal catalysis for selective tumor-targeted prodrug activation. Upon exposure to alkaline phosphatase (ALP), which is overexpressed in osteosarcoma cells (Saos-2), HY-Pd selectively accumulates and self-assembles into catalytic nanofibers.
View Article and Find Full Text PDFIUBMB Life
September 2025
Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China.
Osteosarcoma (OS) is an uncommon malignancy with stagnant survival rates over the past four decades and early-stage metastasis, predominantly affecting children and adolescents. This study identified significant metabolic differences between metastatic and non-metastatic OS samples through bioinformatics analysis, highlighting key processes such as cell proliferation, mitochondrial assembly, and changes in mitochondrial membrane permeability. Among differentially expressed genes, Pleckstrin Homology And FYVE Domain Containing 1 (PLEKHF1) was the most significantly downregulated in metastatic OS samples.
View Article and Find Full Text PDFDrug Dev Res
September 2025
Department of Orthopedics, Gaoxin Branch of The First Affiliated Hospital, Nanchang University, Nanchang, PR China.
Osteosarcoma (OS) is a common malignant bone tumor, frequently associated with impaired osteogenic differentiation of tumor cells. Recent studies have suggested that the NOTCH signaling pathway plays a crucial role in maintaining tumor cell stemness and may influence their differentiation status. This study investigates the role of NOTCH2, a key receptor in the NOTCH family, in regulating osteogenic differentiation in OS.
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