Back to Journals » International Journal of Nanomedicine » Volume 10 » Issue 1

pH-sensitive poly(lactide-co-glycolide) nanoparticle composite microcapsules for oral delivery of insulin

Authors Sun S, Liang N, Yamamoto H, Kawashima Y, Cui F, Yan P

Received 28 January 2015

Accepted for publication 20 March 2015

Published 11 May 2015 Volume 2015:10(1) Pages 3489—3498


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Dr Lei Yang

Shaoping Sun,1 Na Liang,2 Hiromitsu Yamamoto,3 Yoshiaki Kawashima,3 Fude Cui,4 Pengfei Yan1,5

1Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion, College of Heilongjiang Province (Heilongjiang University), School of Chemistry and Material Science, Heilongjiang University, Harbin, People’s Republic of China; 2College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, People’s Republic of China; 3School of Pharmaceutical Science, Aichi Gakuin University, Nissin, Japan; 4School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People’s Republic of China; 5Key Laboratory of Functional Inorganic Material Chemistry, Heilongjiang University, Harbin, People’s Republic of China

Abstract: This study proposes a new concept of pH-sensitive poly(lactide-co-glycolide) (PLGA) nanoparticle composite microcapsules for oral delivery of insulin. Firstly, insulin–sodium oleate complex was prepared by the hydrophobic ion pairing method and then encapsulated into PLGA nanoparticles by the emulsion solvent diffusion method. In order to reduce the burst release of insulin from PLGA nanoparticles and deliver insulin to specific gastrointestinal regions, hence to enhance bioavailability of insulin, the PLGA nanoparticles were further encapsulated into Eudragit® FS 30D to prepare PLGA nanoparticle composite microcapsules by organic spray-drying method. The preparation was evaluated in vitro and in vivo, and the absorption mechanism was discussed. The in vitro drug release studies revealed that the drug release was pH dependent, and the in vivo results demonstrated that the formulation of PLGA nanoparticle composite microcapsules was an effective candidate for oral insulin delivery.

Keywords: sodium oleate, complex, PLGA nanoparticles, Eudragit® FS 30D

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

Download Article [PDF]  View Full Text [HTML][Machine readable]


Readers of this article also read:

Reduction-responsive cross-linked stearyl peptide for effective delivery of plasmid DNA

Yao C, Tai Z, Wang X, Liu J, Zhu Q, Wu X, Zhang L, Zhang W, Tian J, Gao Y, Gao S

International Journal of Nanomedicine 2015, 10:3403-3416

Published Date: 8 May 2015

Green synthesis of water-soluble nontoxic polymeric nanocomposites containing silver nanoparticles

Prozorova GF, Pozdnyakov AS, Kuznetsova NP, Korzhova SA, Emel’yanov AI, Ermakova TG, Fadeeva TV, Sosedova LM

International Journal of Nanomedicine 2014, 9:1883-1889

Published Date: 16 April 2014

Methacrylic-based nanogels for the pH-sensitive delivery of 5-Fluorouracil in the colon

Ashwanikumar N, Kumar NA, Nair SA, Kumar GS

International Journal of Nanomedicine 2012, 7:5769-5779

Published Date: 15 November 2012

A novel preparation method for silicone oil nanoemulsions and its application for coating hair with silicone

Hu Z, Liao M, Chen Y, Cai Y, Meng L, Liu Y, Lv N, Liu Z, Yuan W

International Journal of Nanomedicine 2012, 7:5719-5724

Published Date: 12 November 2012

Cross-linked acrylic hydrogel for the controlled delivery of hydrophobic drugs in cancer therapy

Deepa G, Thulasidasan AK, Anto RJ, Pillai JJ, Kumar GS

International Journal of Nanomedicine 2012, 7:4077-4088

Published Date: 27 July 2012

Crystallization after intravitreal ganciclovir injection

Pitipol Choopong, Nattaporn Tesavibul, Nattawut Rodanant

Clinical Ophthalmology 2010, 4:709-711

Published Date: 14 July 2010