Evaluation of cytotoxic activity of docetaxel loaded gold nanoparticles for lung cancer drug delivery
Abstract
The effective use of the gold nanoparticle (AuNPs) conjugated drugs for targeted drug delivery applications is one of the most promising research areas in the field of cancer. Herein, we aimed to establish a nano drug conjugated with docetaxel as a possible therapy option. Gold nanoparticles were synthesized by chemical reduction method. This is followed by the conjugation with an anticancer drug, docetaxel (Dtx) by a non-covalent method and folic acid (FA) was conjugated by a covalent method. The physicochemical characteristics of the synthesized AuNPs, Dtx and FA were studied by various analytical techniques such as UV-vis spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscope (FE-SEM) high-resolution transmission electron microscope (HR-TEM) and energy dispersive X-ray spectroscopy (EDS). The surface morphology and microstructure of the synthesized AuNPs and gold conjugates (AuNPs-Dtx-FA) were examined by FESEM and HR-TEM. The average size of the spherical shaped AuNPs was observed in the range of 5-18 nm. XPS and EDS spectra were examined the oxidation state and chemical composition of the synthesized nanoparticles. The cytotoxicity of the synthesized AuNPs nano-conjugates was evaluated by in-vitro studies against lung cancer cell line (H520). The chemical reduction method followed here in the development of AuNPs is a simple…
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