Targeted Photothermal Therapy of Melanoma in C۵۷BL/۶ Mice using Fe۳O۴@Au Core-shell Nanoparticles and Near-infrared Laser

Background: Gold nanoshells can be tuned to absorb a particular wavelength of light. As a result, these tunable nanoparticles (NPs) can efficiently absorb light and convert it to heat. This phenomenon can be used for cancer treatment known as photothermal therapy. In this study, we synthesized Fe۳O۴@Au core-shell NPs, magnetically targeted them towards tumor, and used them for photothermal therapy of cancer.Objective: The main purpose of this research was to synthesize Fe۳O۴@Au core-shell NPs, magnetically target them towards tumor, and use them for photothermal therapy of cancer. Material and Methods: In this experimental study, twenty mice received ۲ × ۱۰۶ B۱۶-F۱۰ melanoma cells subcutaneously. After tumors volume reached ۱۰۰ mm۳,the mice were divided into five groups including a control group, NPs group, laser irradiation group, NPs + laser group and NPs + magnet + laser group. NPs were injected intravenously. After ۶ hours, the tumor region was irradiated by laser (۸۰۸ nm, ۲.۵ W/cm۲, ۶ minutes). The tumor volumes were measured every other day. Results: The effective diameter of Fe۳O۴@Au NPs was approximately ۳۷.۸ nm. The average tumor volume in control group, NPs group, laser irradiation group, NPs + laser irradiation group and NPs + magnet + laser irradiation group increased to ۴۷.۳, ۴۵.۳, ۳۲.۸, ۱۹.۹ and ۷.۷ times, respectively in ۲ weeks. No obvious change in the average body weight for different groups occurred. Conclusion: Results demonstrated that magnetically targeted nano-photothermal therapy of cancer described in this paper holds great promise for the selective destruction of tumors.

کلیدواژه ها:

Photothermal Therapy ، Hyperthermia ، Fe۳O۴@Au Core-shell Nanoparticles ، Magnetic Targeting ، Malignant ، Melanoma ، cancer