Abstract
Although photothermal treatment (PTT) has made significant progress in the fight against cancer, certain types of malignant tumors are still difficult to eradicate. PTT uses photothermal transforming agents to absorb NIR light and convert it to thermal energy, causing cancer cell death. In this study, we synthesized alginate (Alg)-coated CuS nanoparticles (CuS@Alg) as photothermal transforming agents to kill glioblastoma cancer cells. Nanoparticles were synthesized via a facile method, then, were characterized with different techniques such as ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared (FTIR), X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), and dynamic light scattering (DLS). Nanoparticles show high stability, and are monodisperse. CuS@Alg was discovered to have a spherical shape, a hydrodynamic size of about 19.93nm, and a zeta potential of - 9.74mV. CuS@Alg is able to increase temperature of medium under NIR light. Importantly, in vitro investigations show that PTT based on CuS@Alg has a strong theraputic impact, resulting in much high effectiveness. The LD50 and histopathology assays were used to confirm the NPs' non-toxicity in vivo. Results from an in vivo subacute toxicity investigation showed that the fabricated NPs were perfectly safe to biomedical usage.
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