جستجوی مقالات مرتبط با کلیدواژه « Breast cancer cells » در نشریات گروه « فنی و مهندسی »

This study is a green approach for the synthesis of silver nanoparticles (AgNPs) using morphine ampoules (MO) as reducing and capping agents. The toxicity effects of prepared particles were evaluated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay on breast cancer cells. UV–visible spectrum, Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), environmental scanning electron microscopy (ESEM), transmission electron microscopy (TEM), and dynamic light scattering (DLS) techniques were employed for characterization of prepared particles. A review mechanism has been done based on density functional theory (DFT). The results confirmed the formation of spherical and crystalline AgNPs with the average particle size of 50nm. Also, DFT analysis revealed that the reduction was occurred by connection of MO constituents to the NO3 part of AgNO3. In addition of reducing effect, the capping characteristics of MO biomolecules were proved by FTIR spectra. Moreover, comparison of Anti-proliferation Activity of MO-AgNPs was 69% higher than MO at similar dosage. Therefore, in addition to use MO as a painkiller in the treatment of cancer, it can also be used as a factor for the synthesis of AgNPs with enhanced its anticancer properties.

There has been considerable interest in developing albumin nanoparticles as drug delivery devices. Albumin is an important endogenous antioxidant due to its potential of acting as reactive oxygen species scavenger. On the other hand, toxicity of silver nanoparticles had been demonstrated on cancer cell lines. In the present study, Ag NPs coated with BSA NPs were synthesized by silver nanoparticles which were coated with bovine serum albumin (BSA) via desolvation technique. The Ag NPs coated with BSA NPs formation was confirmed by UV-Vis spectroscopy and Dynamic Light Scattering (DLS). Human breast cancer cells (MCF7 cells) were then cultured in the presence of the nanoparticles to evaluate the cytotoxicity of Ag NPs coated with BSA NPs by the MTT colorimetric technique. The antioxidant activities of Ag NPs coated with BSA NPs were evaluated in terms of their inhibition of autoxidation rate of pyrogallol as superoxide. The effect of Ag NPs coated with BSA NPs on MCF7 exhibit a dose-dependent toxicity for the cell tested and the viability of MCF-7 decreased to 50% (LD50) at the concentration of 5 μg/mL. The IC50 value of antioxidant activities of Ag NPs coated with BSA NPs were 8 µg/mL which demonstrated that Ag NPs coated with BSA NPs were good superoxide scavengers. In conclusion, our data show that Ag NPs coated with BSA NPs had antioxidant and anticancer activities in MCF-7 cells.