Micelle-like nanoparticles of star-branched PEO-PLA copolymers as chemotherapeutic carrier

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

108 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)20-33
Journal / PublicationJournal of Controlled Release
Volume110
Issue number1
Online published11 Nov 2005
Publication statusPublished - 10 Dec 2005
Externally publishedYes

Abstract

Four-armed (star-branched) block copolymers of l-PLA and PEO were synthesized using ring opening polymerization with different LA / EO ratio. Micellar aggregates were prepared from these block copolymers and characterized. Some surface segregation of PEG was found : the extent depends on the state of the material (whether it is in film or particle form), as well as on molecular geometry. The degradation behavior of star-shaped copolymer was studied over a three week period and compared to its linear counterpart. Anti-cancer drugs 5-FU and paclitaxel were loaded into the micellar nanoparticles. The drug release profile showed that the release of paclitaxel from these polymers could be controlled over 2 weeks. The kinetics of drug release for star-branched, tri- and di-block copolymers were compared. The micelles from star-shaped branch showed more complete release of drug than the diblock copolymers; also, the lower hydrodynamic radius of star-shaped polymers may result in better clearance of the carrier polymer from the body. © 2005 Elsevier B.V. All rights reserved.

Research Area(s)

  • 5-FU, Drug carrier, Paclitaxel, PEO, PLA

Citation Format(s)

Micelle-like nanoparticles of star-branched PEO-PLA copolymers as chemotherapeutic carrier. / Jie, Pan; Venkatraman, Subbu S.; Min, Feng et al.
In: Journal of Controlled Release, Vol. 110, No. 1, 10.12.2005, p. 20-33.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review