Pegylated magnetic carbon nanotubes for efficient and safe delivery of poorly water-soluble platinum anticancer drugs

Abstract

In this work, a new PEGylated magnetic carbon nanotube was developed for efficient and safe delivery of poorly water-soluble platinum anticancer drugs. Nanocarriers based on PEGylated magnetic carbon nanotubes were chemically synthesized through simple methods and finally platinum(II) complex conjugated to the synthesized delivery system (carbon nanotubes/polyethyleneglycol@Fe3O4/CPTMS@Cis-dichloro-bis(5-(4-pyridyl)-5-phenylhydantoin)platinum(II)) (CNTs/PEG@M/CPTMS@CisPt(II)). This nanomaterial was characterized by Transmission electron microscopes (TEM), Scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), X-Ray diffraction analysis (XRD), Ultraviolet–visible (UV–Vis) spectroscopy, Inductively coupled plasma mass spectrometry (ICP-MS), Fourier-transform infrared spectroscopy (FT-IR), Elemental mapping, Raman spectroscopy, and Nuclear Magnetic Resonance (NMR) analysis. The pattern of drug release from the CNTs/PEG@M/CPTMS@CisPt(II) was affected by pH at a certain temperature and time. In vitro cytotoxicity studies shown that despite the acceptable biocompatibility of the drug-free carrier, the drug-conjugated carrier has a good efficiency in limiting the growth and killing cancer cells. These findings revealed that CNTs/PEG@M/CPTMS@CisPt(II) carrier may provide a promising approach for delivery of the anticancer drugs to cancer cells.