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      Green synthesis and characterization of selenium nanoparticles and its augmented cytotoxicity with doxorubicin on cancer cells.

      Bioprocess and Biosystems Engineering
      Antibiotics, Antineoplastic, chemistry, Apoptosis, Doxorubicin, administration & dosage, Drug Screening Assays, Antitumor, Drug Synergism, Female, Green Chemistry Technology, methods, Humans, MCF-7 Cells, Metal Nanoparticles, Microscopy, Electron, Scanning, Nanomedicine, Neoplasms, drug therapy, Plant Extracts, Selenium, Spectrometry, X-Ray Emission, Spectroscopy, Fourier Transform Infrared, Trigonella, X-Ray Diffraction

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          Green synthesis of selenium nanoparticles (SeNPs) was achieved by a simple biological procedure using the reducing power of fenugreek seed extract. This method is capable of producing SeNPs in a size range of about 50-150 nm, under ambient conditions. The synthesized nanoparticles can be separated easily from the aqueous sols by a high-speed centrifuge. These selenium nanoparticles were characterized by UV-Vis spectroscopy, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and elemental analysis by X-ray fluorescence spectrometer (XRF). Nanocrystalline SeNPs were obtained without post-annealing treatment. FTIR spectrum confirms the presence of various functional groups in the plant extract, which may possibly influence the reduction process and stabilization of nanoparticles. The cytotoxicity of SeNPs was assayed against human breast-cancer cells (MCF-7). It was found that SeNPs are able to inhibit the cell growth by dose-dependent manner. In addition, combination of SeNPs and doxorubicin shows better anticancer effect than individual treatments.

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