title: Synthesis of water soluble PEGylated magnetic complexes using mPEG-fatty acid for biomedical applications.
abstract: We report the successful fabrication of the various types of water soluble PEGylated magnetic complexes (PMCs) for magnetism-related biomedical applications. Various types of PMCs were synthesized and tested to accomplish phase transfer from organic to aqueous phase using monomethoxy polyethylene glycol (mPEG)-fatty acid amphiphilic block copolymers (PFs) through conjugation of the hydroxyl group of mPEG with the carboxyl group of fatty acids. We also carefully investigate their colloidal stabilities in aqueous phase according to the ratio of hydrophilic and hydrophobic lengths relying on different types of fatty acids. Synthesized PMCs clearly demonstrated high magnetic sensitivity under magnetic field as magnetic resonance (MR) contrast agents. Furthermore, PMCs exhibited sufficient cell viabilities and excellent cell affinities in an in vitro model. Our results demonstrated that our PMCs possessed the potential for highly efficient magnetism-related biomedical applications such as MR image agents, drug delivery and tracking of cells.
authors.affiliation: Department of Chemical Engineering, College of Engineering, Yonsei University, Seoul 120-749, South Korea. ekekek@yonsei.ac.kr
authors.forename: Eun-Kyung
authors.initials: EK
authors.lastname: Lim
authors.forename: Jaemoon
authors.initials: J
authors.lastname: Yang
authors.forename: Mee-ye
authors.initials: MY
authors.lastname: Park
authors.forename: Joseph
authors.initials: J
authors.lastname: Park
authors.forename: Jin-Suck
authors.initials: JS
authors.lastname: Suh
authors.forename: Ho-Geun
authors.initials: HG
authors.lastname: Yoon
authors.forename: Yong-Min
authors.initials: YM
authors.lastname: Huh
authors.forename: Seungjoo
authors.initials: S
authors.lastname: Haam
mesh_terms: D001672:Biocompatible Materials / Q000138:chemical synthesis / Q000378:metabolism; D004337:Drug Carriers / Q000138:chemical synthesis* / Q000378:metabolism; D005227:Fatty Acids / Q000737:chemistry* / Q000378:metabolism; D005290:Ferric Compounds / Q000138:chemical synthesis; D006367:HeLa Cells; D006801:Humans; D008280:Magnetics; D017895:Manganese Compounds / Q000138:chemical synthesis; D053758:Nanoparticles / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry* / Q000378:metabolism; D011108:Polymers / Q000138:chemical synthesis / Q000378:metabolism; D012995:Solubility; D013778:Tetrazolium Salts / Q000737:chemistry; D013844:Thiazoles / Q000737:chemistry; D000267:Tissue Adhesions; D014867:Water
chemical_list: D001672:Biocompatible Materials; D004337:Drug Carriers; D005227:Fatty Acids; D005290:Ferric Compounds; D017895:Manganese Compounds; D011108:Polymers; D013778:Tetrazolium Salts; D013844:Thiazoles; D014867:Water; D011092:Polyethylene Glycols; C028210:monomethoxypolyethylene glycol; C022616:thiazolyl blue