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Biophysical characterization of quaternary pyridinium functionalized polynorbornenes for DNA complexation and their cellular interactions
Author(s) -
Guler Gokce Zeliha,
Zuhal Birol Semra,
Eren Tarık,
Ercelen Ceylan Sebnem
Publication year - 2017
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.23005
Subject(s) - chemistry , pyridinium , cationic polymerization , romp , vesicle , polymer , amphiphile , polymerization , membrane , alkyl , dna , monomer , polymer chemistry , polyelectrolyte , dna condensation , side chain , ring opening metathesis polymerisation , micelle , copolymer , organic chemistry , metathesis , biochemistry , transfection , aqueous solution , gene
Cationic polymers with hydrophobic side chains have gained great interest as DNA carriers since they form a compact complex with negatively charged DNA phosphate groups and interact with the cell membrane. Amphiphilic polyoxanorbornenes with different quaternary alkyl pyridinium side chains with ethyl‐p(OPy2) and hexyl units‐p(OPy6) bearing 10 kDa MWT were synthesized by living Ring‐Opening Metathesis Polymerization method. The physicochemical characteristics: critical micellar concentration, size distribution, surface charge, and condensation of polymer/DNA complex were investigated. Morphology of complexes was monitored by Atomic force microscopy. Cytotoxicity and interaction of these complexes with model lipid vesicles mimicking the cell membrane were examined. These polymers were enabled to form small sized complexes of DNA, which interact with model membrane vesicles. It was found that the nature of hydrophobicity of the homopolymers significantly impacts rates of DNA complexation and the surface charge of the resulting complexes. These results highlight the prospect of the further examinations of these polymers as gene carriers.