Kılıçay, Ebru | Karahaliloğlu, Zeynep | Hazer, Baki | Tekin, İshak Özel | Denkbaş, Emir Baki

Article | 2016 | Journal of Microencapsulation33 ( 3 ) , pp.274 - 285

The aim of this study was to evaluate therapeutic potential of curcumin-loaded poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) PHBHHx nanoparticles (CUR-NPs) and concanavaline A conjugated curcumin-loaded NPs (ConA-CUR-NPs) for breast cancer treatment. The size and zeta potential of prepared NPs were about 228 ± 5 nm and -23.3 mV, respectively. The entrapment efficiencies of polymer/drug weight ratios, 1.25CUR-NPs, 2.5CUR-NPs, 5CUR-NPs, ConA-1.25CUR-NPs, ConA-2.5CUR-NPs and ConA-5CUR-NPs were found to be ?68, 55, 45, 70, 60 and 51%, respectively. Optimized NPs formulations in the freeze-dried form were assessed with their short-term s . . .tability for 30 days of storage at 4 °C and 25 °C. Anticancer activity of ConA-CUR-NPs was proved by MTT assay and reconfirmed by double staining and flow cytometry results. The anticancer activity of ConA-CUR-NPs was measured in human breast cancer cells (MDA-MB 231) in vitro, and the results revealed that the ConA-CUR-NPs had better tumor cells decline activity. © 2016 Informa UK Limited, trading as Taylor & Francis Group Daha fazlası Daha az

Anılmış, Nur Merve | Kara, Göknur | Kılıçay, Ebru | Hazer, Baki | Denkbaş, Emir Baki

Article | 2019 | Journal of Microencapsulation36 ( 7 ) , pp.635 - 648

In this study, the anticancer activities of two siRNA carriers were compared using a human lung adenocarcinoma epithelial cell line (A549). Firstly, poly(styrene)-graft-poly(linoleic acid) (PS-g-PLina) and poly(styrene)-graft-poly(linoleic acid)-graft-poly(ethylene glycol) (PS-g-PLina-g-PEG) graft copolymers were synthesized by free-radical polymerization. PS-PLina and PS-PLina-PEG nanoparticles (NPs) were prepared by solvent evaporation method and were then characterized. The size was found as 150 ± 10 nm for PS-PLina and 184 ± 6 nm for PS-PLina-PEG NPs. The NPs were functionalized with poly(l-lysine) (PLL) for c-myc siRNA conjugat . . .ion. siRNA entrapment efficiencies were found in the range of 4–63% for PS-PLina-PLL and 6–42% for PS-PLina-PEG-PLL NPs. The short-term stability test was realised for 1 month. siRNA release profiles were also investigated. In vitro anticancer activity of siRNA-NPs was determined by MTT, flow cytometry, and fluorescence microscopy analyses. Obtained findings showed that both NPs systems were promising as siRNA delivery tool for lung cancer therapy. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group Daha fazlası Daha az