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- W1502682364 abstract "Herein, chiral selenium nanoparticles (L-SeNPs/D-SeNPs) modified with a dinuclear Ruthenium (II) complex were used to effectively deliver siRNA targeting the MDR1 gene. In this co-delivery system, the luminescent dinuclear Ruthenium (II) complex was developed to act as a gene carrier and anti-tumor drug, while offering luminescent imaging to follow the intracellular trafficking. Interestingly, Ru@L-SeNPs exhibited a stronger protein and pDNA affinity than Ru@D-SeNPs, indicating that chirality may have an effect on pDNA/siRNA binding and biocompatibility. Cisplatin-resistant A549R cells treated with Ru@L-SeNPs-siRNA demonstrated significant downregulation of P-glycoprotein (P-gp) expression, resulting in unprecedented enhanced cytotoxicity through the induction of apoptosis with the involvement of phosphorylation of p53, MAPK and PI3K/Akt signaling pathways. In vivo investigation confirmed that Ru@L-SeNPs-siRNA nanoparticles exhibited high tumor-targeted fluorescence, enhanced anti-tumor efficacy, and decreased systemic toxicity. These results suggest that Ru@L-SeNPs are promising vectors for the delivery of siRNA and for real-time tracking of treatment.In this study, the authors designed bi-functional selenium nanoparticles with specific chirality to deliver siRNA, for targeting tumor MDR1 gene. The underlying ruthenium (II) complex could also offer fluorescence for real-time imaging. This new system has been shown to have enhanced efficacy against drug resistant tumor cells in both in-vitro and in-vivo experiments." @default.
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- W1502682364 date "2015-10-01" @default.
- W1502682364 modified "2023-10-16" @default.
- W1502682364 title "Multifunctional selenium nanoparticles: Chiral selectivity of delivering MDR-siRNA for reversal of multidrug resistance and real-time biofluorescence imaging" @default.
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- W1502682364 doi "https://doi.org/10.1016/j.nano.2015.04.011" @default.
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