Glutathione-sensitive nanogels for drug release

Natascia Grimaldi, Maria Antonietta Sabatino, Simona Campora, Giorgia Adamo, Giulio Ghersi, Clelia Dispenza, Giorgia Adamo, Clelia Dispenza, Simona Campora, Giulio Ghersi

Research output: Chapter in Book/Report/Conference proceedingChapter

10 Citations (Scopus)

Abstract

Nanogels (NGs) synthesized by pulsed electron-beam irradiation of semi-dilute poly (N-vinyl pyrrolidone) (PVP) aqueous solutions, at relatively low energy per pulse and doses within the sterilization dose range, represent a very interesting family of polymeric nanocarriers. Ionizing irradiation-induced crosslinking of PVP allows to control particle size, and surface chemistry of the polymer nanoparticles without making use of catalysts, organic solvents or surfactants, and with beneficial effects onto the purity and hence biocompatibility of the final products obtained. Furthermore, the availability of reactive functional groups, either generated by the radiation or purposely grafted via copolymerisation with suitable functional monomers enables the conjugation of therapeutics drug, that make them suitable nanocarriers for biomedical applications. In particular, we have developed a carboxyl-functionalized nanogel variant for glutathione-mediated delivery of a chemotherapeutic agent, Doxorubicin. The drug is linked to the nanoparticles through a linker containing a cleavable disulphide bridge, aminoethyldithiopropionic acid (AEDP). In vitro drug release experiments have shown that glutathione can induce the release of Doxorubicin, through the reduction of the disulfide bridge. These results suggest that such redox-responsive nanoparticles can deliver doxorubicin into the nuclei of tumor cells, thus inducing inhibition of cell proliferation, and provide a favourable platform to construct nanoscalar drug delivery systems for cancer therapy.
Original languageEnglish
Title of host publicationCHEMICAL ENGINEERING TRANSACTIONS
Pages457-462
Number of pages6
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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