EGFR and cancer: The surface of gold nanoparticles (Au-NPs) can be easily functionalized with chemotherapeutics, antibodies, or nucleic acids, such as snake-venom-protein toxin NKCT1, anti- epidermal growth factor receptor (EGFR) monoclonal antibody, trastuzumab, or quercetin, making them excellent autophagy inducers for cancer therapy [65, 66].