کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8478 591 2010 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cationic fluorine-containing amphiphilic graft copolymers as DNA carriers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Cationic fluorine-containing amphiphilic graft copolymers as DNA carriers
چکیده انگلیسی

A series of cationic fluorine-containing amphiphilic graft copolymers P(HFMA-St-MOTAC)-g-PEG comprising poly(hexafluorobutyl methacrylate) (PHFMA) poly(methacryl oxyethyl trimethylammonium chloride) (PMOTAC) polystyrene (PSt) backbones and poly(ethylene glycol) (PEG) side chains are synthesized as a type of non-viral gene vector. The copolymers self-assemble into spherical micelles in the aqueous media and turbidity and cytotoxicity measurements show that those micelles have excellent dispersive stability and low cytotoxicity. The interactions between the copolymers and calf-thymus DNA are studied by fluorescence spectroscopy and viscosity. The former discloses electrostatic interaction, hydrophobic interaction, and hydrogen bonding in the copolymer/DNA system, whereas the latter indicates that these graft copolymers can bind DNA via the electrostatic and classical intercalation modes. The DNA-binding capacity determined by the gel retardation assay and UV–visible spectrophotometry shows that the copolymers have good binding capacity to DNA and a high charge density or HFMA content in the copolymers bode well for DNA-binding. Transmission electron microscopy, photon correlation spectroscopy, and zeta potential data reveal that stable colloidal complexes (particles) can form easily between the copolymer micelles and DNA. Our results suggest that the copolymers are a promising non-viral vector in a gene delivery system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomaterials - Volume 31, Issue 9, March 2010, Pages 2673–2685
نویسندگان
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