title: A magnetically guided anti-cancer drug delivery system using porous FePt capsules.
abstract: Magnetic carriers with efficient loading, delivery, and release of drugs are required for magnetically guided drug delivery system (DDS) as the potential cancer therapy. The present article describes the fabrication of porous FePt capsules approximately 340 nm in diameter with large pores of 20 nm in an ultrathin shell of 10 nm and demonstrates their application to a magnetically guided DDS in vitro. An aqueous anti-cancer drug is easily introduced in the hollow space of the capsules without external stimuli and released to cancer cells on cue through the magnetic shell composed of an ordered-alloy FePt network structure, which exhibits superparamagnetic features at approximately body temperature. The drug-loaded magnetic capsules coated with a lipid membrane are efficiently guided to the cancer cells within 15 min using a NdFeB magnet (0.2 T), and more than 70% of the cancer cells are destroyed.
authors: Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Midori-ku, Yokohama, Japan.
authors: Teruaki
authors: T
authors: Fuchigami
authors: Ryo
authors: R
authors: Kawamura
authors: Yoshitaka
authors: Y
authors: Kitamoto
authors: Masaru
authors: M
authors: Nakagawa
authors: Yoshihisa
authors: Y
authors: Namiki
mesh_terms: D000643:Ammonium Chloride / Q000737:chemistry; D000970:Antineoplastic Agents / Q000494:pharmacology*; D002214:Capsules; D045744:Cell Line, Tumor; D004317:Doxorubicin / Q000494:pharmacology; D016503:Drug Delivery Systems / Q000379:methods*; D006801:Humans; D007501:Iron / Q000737:chemistry*; D008055:Lipids / Q000737:chemistry; D008280:Magnetics / Q000379:methods*; D008856:Microscopy, Fluorescence; D053758:Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D010984:Platinum / Q000737:chemistry*; D016062:Porosity / Q000187:drug effects; D012822:Silicon Dioxide / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D000970:Antineoplastic Agents; D002214:Capsules; D008055:Lipids; D000643:Ammonium Chloride; D010984:Platinum; D012822:Silicon Dioxide; D004317:Doxorubicin; D007501:Iron