Journal
MACROMOLECULAR BIOSCIENCE
Volume 11, Issue 3, Pages 445-454Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mabi.201000399
Keywords
atom transfer radical polymerization (ATRP); copolymerization; drug delivery systems; graft copolymers; nanoparticles
Funding
- MIUR
- University of Palermo
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A new PHEA-IB-PMANa(+) copolymer has been synthesized and its pH-induced self-assembly has been investigated in an aqueous medium. PHEA-IB-PMANa(+) formed nanoparticles with diameters from 25 to 50 nm upon protonation of the carboxylic acid moieties dislocated along the grafted polymethacrylate sodium salt side chains. The physico-chemical characterization of the nanoparticles was performed using light scattering, zeta-potential measurements, SEM, and AFM. Doxorubicin-loaded nanoparticles were prepared and drug release profiles were evaluated under conditions mimicking physiological media. A biological characterization was carried out by testing the cytotoxicity on Caco-2 cells, and cellular uptake on mouse monocyte macrophage (J774 A.1) and Caco-2 cells.
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