Premium
Synthesis of Functional Core, Star Polymers via RAFT Polymerization for Drug Delivery Applications
Author(s) -
Liu Jinna,
Duong Hien,
Whittaker Michael R.,
Davis Thomas P.,
Boyer Cyrille
Publication year - 2012
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201200029
Subject(s) - raft , reversible addition−fragmentation chain transfer polymerization , chain transfer , polymerization , drug delivery , polymer chemistry , polymer , acrylate , dispersity , chemistry , doxorubicin , vinyl alcohol , materials science , conjugated system , radical polymerization , organic chemistry , copolymer , medicine , surgery , chemotherapy
Poly(oligoethylene glycol) methyl ether acrylate was polymerized via reversible addition fragmentation transfer polymerization (RAFT), and then chain extended in the presence of both a cross‐linker and vinyl benzaldehyde (VBA), yielding monodisperse star polymers. The presence of aldehyde groups in the core was exploited to attach doxorubicin. The drug loading was controlled by the amount of VBA incorporated (until 28 wt% in drug). The doxorubicin release was studied at pH = 5.5 and 7.4; conditions representative of endosomal and extra cellular environments. In vitro studies revealed that the doxorubicin‐conjugated star polymers had a level of cytotoxicity comparable to that found for free doxorubicin. Confocal microscopy and flow cytometry studies confirmed efficient cell uptake of the star polymers.