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• W2041814147 abstract "The success of tissue engineering is dependent on rapid scaffold vascularization after engraftment. Copper ions are well known to be angiogenic but exhibit cytotoxicity at elevated doses. The high sensitivity to copper concentration underlines the need of a controlled release mechanism. This study investigated the effect of copper ions released from phosphate-based glasses (PGs) on human umbilical vein endothelial cells (HUVECs) under standard growth conditions (SGC), as well as in a reduced nutrient environment (RNE) with decreased bovine serum and growth factor concentrations to approximate conditions in the core of large volume scaffolds where nutrient diffusion is limited. Initially, HUVECs were exposed to a range of CuCl2 concentrations in order to identify an optimal response in terms of their metabolism, viability, and apoptotic activity. Under SGC, HUVEC metabolic activity and viability were reduced in a dose-dependent manner in the presence of 0.44–12 ppm Cu2+. In contrast, HUVEC death induced by the RNE was delayed by an optimal dose of 4 ppm Cu2+, which was associated with a down-regulation of apoptosis as evidenced by caspase-3/7 activity. Copper ion release from soluble PGs of the formulation 50P2O5-30CaO-(20-x)Na2O-xCuO [mol%] (x=0, 1, 5 and 10) demonstrated a controllable increase with CuO content. The presence of 4 ppm copper ions released from the 10% CuO PG composition reproduced the delay in HUVEC death in the RNE, suggesting the potential of these materials to extend survival of transplanted endothelial cells in large volume scaffolds." @default.
• W2041814147 created "2016-06-24" @default.
• W2041814147 creator A5020563927 @default.
• W2041814147 creator A5032968932 @default.
• W2041814147 creator A5040908856 @default.
• W2041814147 date "2013-02-01" @default.
• W2041814147 modified "2023-09-23" @default.
• W2041814147 title "Controlled Copper Ion Release from Phosphate-Based Glasses Improves Human Umbilical Vein Endothelial Cell Survival in a Reduced Nutrient Environment" @default.
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• W2041814147 doi "https://doi.org/10.1089/ten.tea.2012.0223" @default.
• W2041814147 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23298240" @default.
• W2041814147 hasPublicationYear "2013" @default.
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