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Gold nanoparticles are small gold particles with a diameter of 1 to 100 nm. Their characteristic surface Plasmon resonance feature aid indistinctive absorption and optical properties which can be characterized and can be useful in many biomedical applications. Gold Nanoparticles can be used as delivery vectors due to their high surface loading capacity of drug, gene, Protein or vaccine. The surface of Gold Nanoparticles can be modified by molecules such as polymers, Ligands, surfactants by conjugation increases its ability to cross the membrane and also helps in reduction of cytotoxic effect due to attraction to targeted areas. So, it can be used in Targeted drug Therapy by conjugating cancer drug molecules to these particles. Gold Nanoparticles absorbs certain wavelength of incident light and converts into heat which is transferred to cancer cells and leads to destruction of cells due to photothermal effect. |
