Glucose-responsive micelles from self-assembly of poly(ethylene glycol)-b-poly(acrylic acid-co-acrylamidophenylboronic acid) and the controlled release of insulin

Beilei Wang; Rujiang Ma; Gan Liu; Yan Li; Xiaojun Liu; Yingli An; Linqi Shi

doi:10.1021/la901776a

Glucose-responsive micelles from self-assembly of poly(ethylene glycol)-b-poly(acrylic acid-co-acrylamidophenylboronic acid) and the controlled release of insulin

Langmuir. 2009 Nov 3;25(21):12522-8. doi: 10.1021/la901776a.

Authors

Beilei Wang¹, Rujiang Ma, Gan Liu, Yan Li, Xiaojun Liu, Yingli An, Linqi Shi

Affiliation

¹ Key Laboratory of Functional Polymer Materials, Ministry of Education, and Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China.

PMID: 19810675
DOI: 10.1021/la901776a

Abstract

Poly(ethylene glycol)-block-poly(acrylic acid-co-acrylamidophenylboronic acid) [PEG(114)-b-(PAA(63)-co-PAAPBA(107))] was synthesized by the modification of poly(ethylene glycol)-block-poly(acrylic acid) (PEG(114)-b-PAA(170)) with 3-aminophenylboronic acid (APBA). Glucose-responsive PEG(114)-b-(PAA(63)-co-PAAPBA(107)) self-assembled into core-shell micelles with the hydrophobic core composed of PAAPBA and hydrophilic shell composed of PEG in aqueous solution. The swelling and disaggregating behaviors of micelles responding to glucose were investigated by using light scattering in aqueous solution at pH 7.4. Characterization of insulin-loaded micelles and their drug release in solutions with various glucose concentrations were further studied. The results demonstrated that the drug release rate can be controlled by variation of glucose concentration.