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- W2599603205 abstract "// Weirong Kang 1 , Darren Svirskis 1 , Vijayalekshmi Sarojini 2 , Ailsa L. McGregor 1 , Joseph Bevitt 3 and Zimei Wu 1 1 School of Pharmacy, University of Auckland, Auckland 1142, New Zealand 2 School of Chemical Sciences, University of Auckland, Auckland 1142, New Zealand 3 Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organization, Sydney 2232, Australia Correspondence to: Zimei Wu, email: z.wu@auckland.ac.nz Keywords: boron neutron capture therapy (BNCT), dual-targeting drug delivery, glioblastomas, Integrin αv and β3, cyclic RGD peptides Received: November 09, 2016 Accepted: March 01, 2017 Published: March 28, 2017 ABSTRACT The efficacy of boron neutron capture therapy depends on the selective delivery of 10 B to the target. Integrins αvβ3 are transmembrane receptors over-expressed in both glioblastoma cells and its neovasculature. In this study, a novel approach to dual-target glioblastoma vasculature and tumor cells was investigated. Liposomes (124 nm) were conjugated with a αvβ3 ligand, cyclic arginine-glycine-aspartic acid-tyrosine-cysteine peptide (c(RGDyC)-LP) (1% molar ratio) through thiol-maleimide coupling. Expression of αvβ3 in glioblastoma cells (U87) and human umbilical vein endothelial cells (HUVEC), representing tumor angiogenesis, was determined using Western Blotting with other cells as references. The results showed that both U87 and HUVEC had stronger expression of αvβ3 than other cell types, and the degree of cellular uptake of c(RGDyC)-LP correlated with the αvβ3-expression levels of the cells. In contrast, control liposomes without c(RGDyC) showed little cellular uptake, regardless of cell type. In an in vitro boron neutron capture therapy study, the c(RGDyC)-LP containing sodium borocaptate generated more rapid and significant lethal effects to both U87 and HUVEC than the control liposomes and drug solution. Interestingly, neutron irradiated U87 and HUVEC showed different types of subsequent cell death. In conclusion, this study has demonstrated the potential of a new dual-targeting strategy using c(RGDyC)-LP to improve boron neutron capture therapy for glioblastoma." @default.
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- W2599603205 date "2017-03-28" @default.
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- W2599603205 title "Cyclic-RGDyC functionalized liposomes for dual-targeting of tumor vasculature and cancer cells in glioblastoma: An <i>in vitro</i> boron neutron capture therapy study" @default.
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- W2599603205 doi "https://doi.org/10.18632/oncotarget.16625" @default.
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