nanomedicine
Rajaa H Salih; Wajeeh Kachi Obead; Ahmed Majeed Al-Shammari
Abstract
Objective(s): This study aimed to prepare a stable colloidal silver nanoparticles (AgNPs) and assess its novelty combination therapy, which comprises AgNPs and lives attenuated Measles virus (MV) vaccine, to target breast cancer cells. The safety of the proposed therapy in normal breast epithelial cell ...
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Objective(s): This study aimed to prepare a stable colloidal silver nanoparticles (AgNPs) and assess its novelty combination therapy, which comprises AgNPs and lives attenuated Measles virus (MV) vaccine, to target breast cancer cells. The safety of the proposed therapy in normal breast epithelial cell lines (HBL-100) was evaluated.Methods: Silver nanoparticles prepared by chemical reduction, The stability, size, and concentration of the colloidal component have been demonstrated by examining the ultraviolet-visible (UV-Vis) spectroscopy at various times using Zeta potential examination, atomic force microscopy (AFM), and atomic spectroscopy. MV was propagated using the VERO-hSLAM cell line. Cytotoxicity assay was evaluated on human breast cancer cell lines. The safety of the proposed therapy in normal Human breast Luminal epithelial cells was assessed to compare the effect against cancer cell lines.Results: The formation of nanoparticles is confirmed by the appearance of a perfect surface plasmon resonance (SPR) band at 424 nm. The stability was proved via a slight change in the absorption intensity from 224 nm to 226 nm (immediately and after a month), respectively, and the value of the charge was -41.13 mV. NPs were spherical in shape and had an average diameter of 40.87 nm. The concentration was 13 µg/ml. The Chou–Talalay analysis revealed synergism between the Measles virus and silver nanoparticles in all tested cancer cell lines and there were highly significant differences (p-value<0.001) among them Conclusions: The novel combination of AgNPs and MV showed effective antitumor activity against breast cancer cells with high safety in normal human breast cells.
Fatemeh Gheybi; Seyedeh Hoda Alavizadeh; Seyed Mahdi Rezayat; Elham Zendedel; Mahmoud Jaafari
Abstract
Cancer is the second leading cause of death worldwide. Despite great efforts over many years, today cancer treatment is not very effective. The main reasons for cancer chemotherapy failure are high cytotoxicity, low response rates in solid tumors, and development of resistance. Different experimental ...
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Cancer is the second leading cause of death worldwide. Despite great efforts over many years, today cancer treatment is not very effective. The main reasons for cancer chemotherapy failure are high cytotoxicity, low response rates in solid tumors, and development of resistance. Different experimental studies have shown that drug combination using low toxicity natural compounds such as polyphenols can reduce the required dose of cytotoxic drugs for cancer treatment. The polyphenolic compound, Silymarin (SLM), is an active extract from the seeds of the plant milk thistle (Silybum Marianum). It is well known for its hepatoprotective, antioxidant and chemoprotective effects. In present study, we investigated cytotoxic effects of combined liposomal doxorubicin (DXL) and SLM on 4T1 breast cancer cells at different molar ratios of the two drugs and we focused on elucidating whether the combination of the two drugs could dictate antitumor activity in vitro. Results indicated that SLM-DXL combination at 100 and 300 molar ratios, exert synergistic growth-inhibitory effects. These synergistic effects were observed only at lower SLM-DXL concentrations. In conclusion, it is conceivable that in SLM-DXL combination chemotherapy, drug ratios play a key role which determine the final response following treatment. Thus, using liposomes as targeted drug delivery systems, it would be possible to achieve appropriate combination of the two drugs at correct doses and correct administration intervals clinically. Keywords: Silymarin; Doxorubicin; Liposomes; Combination therapy; 4T1
