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    Antiproliferative effects of 5FU-AgNPs on different breast cancer cells
    (Taylor & Francis Ltd, 2024) Danisman-Kalindemirtas, Ferdane; Kariper, I. Afsin; Ustundag, Hilal; Ozsoy, Ceylan; Erdem-Kuruca, Serap
    Breast cancer is a leading cause of cancer-related deaths in women, and researchers are seeking more effective treatments. Nanotechnology offers a promising approach by creating nanocarriers to reduce the side effects of cancer drugs. This study synthesized AgNPs-5FU nanoparticles by binding the anticancer drug 5-fluorouracil (5FU) to a silver nanocarrier, significantly increasing 5FU's cytotoxicity. Characterization using DLS, SEM, UV-Vis, and FTIR confirmed the nanoparticles' properties, with a size of 18-28 nm and a PDI of 0.598. The release of 5FU from AgNPs-5FU was about 70%, demonstrating sustained and controlled release. Cytotoxicity results showed that AgNPs-5FU had an IC50 value of 23.006 in MCF-7 cells and 10.41 in 4T1 cells, making it 2.14 and 4.64 times more effective than free 5FU, respectively. Low cytotoxicity was observed in HUVEC cells. This study indicates that AgNPs-5FU has significantly higher potential activity against cancer cells compared to free 5FU.
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    Selective cytotoxicity of paclitaxel bonded silver nanoparticle on different cancer cells
    (Elsevier, 2021) Danisman-Kalindemirtas, Ferdane; Kariper, I. Afsin; Hepokur, Ceylan; Erdem-Kuruca, Serap
    Paclitaxel (PTX) is one of the most effective drugs in the treatment of cancer. However, its usability is limited due to low solubility and side effects. In this study, we investigated anticancer effects of PTX bonded silver nanoparticles (AgNPs-PTX) on 4 different cancer cells, namely MDA-MB-231, MCF-7, 4T1, Saos-2, and on noncancerous HUVEC cells. The silver nanoparticles (AgNPs) that we synthesized were first characterized by UV-VIS, FTIR, SEM, and DLS analysis. The size of AgNPs was measured to be around 3 nm and AgNPs-PTX around 10 nm. AgNPs-PTX were found to be 2 to 10 times more effective than PTX alone. Especially, Saos-2 cells were found to be approximately 10 times more sensitive to AgNPs-PTX than PTX alone. AgNPs-PTX did not caused toxicity on non-cancerous HUVEC cell and significantly reduced the viability of all cancer cells we tested. Our findings suggest that AgNPs-PTX may be an anticancer agent candidate that is more effective than PTX alone and specific to Saos-2 cells.