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Dual Trigger Crosslinked Micelles Based Polyamidoamine for Effective Paclitaxel Delivery | OMICS International | Abstract
ISSN: 2157-7439

Journal of Nanomedicine & Nanotechnology
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Research Article

Dual Trigger Crosslinked Micelles Based Polyamidoamine for Effective Paclitaxel Delivery

Kien Voon Kong1, Douglas Goh1 and Malini Olivo1,2*

1Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Agency for Science Technology and Research (A*STAR), 11 Biopolis Way, 138667, Singapore

2School of Physics, National University of Ireland Galway, Galway, Ireland

*Corresponding Author:
Malini Olivo
Bio-Optical Imaging Group, Singapore Bioimaging Consortium
Agency for Science Technology and Research (A*STAR)
11 Biopolis Way, 138667, Singapore
Tel: (65) 6478 8752
Fax: (65) 6478 9957
E-mail: [email protected]

Received Date: June 19, 2014; Accepted Date: July 21, 2014; Published Date: July 26, 2014

Citation: Kong KV, Goh D, Olivo M (2014) Dual Trigger Crosslinked Micelles Based Polyamidoamine for Effective Paclitaxel Delivery. J Nanomed Nanotechnol 5:212. doi:10.4172/2157-7439.1000212

Copyright: © 2014 Kong KV, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Targeted delivery of drugs in therapeutic applications is gaining traction in treating various diseases. However, its practicality is challenged by uncontrolled drug release. We present here a novel dual-trigger polyamidoaminebased crosslinked micelle vector that releases therapeutic drugs in response to triggers. The degradation of micelles can be controlled by redox and MMP-2 enzymatic activities. Such a system can achieve greater specificity for drug release than most recently reported micelle systems. Cytotoxicity tests of the micelles showed that they posed significantly lower toxicity towards normal cells as normal cells have relatively lower concentration of MMP-2 enzyme to disintegrate the micelles. The paclitaxel-conjugated micelles were effective in inducing apoptosis and cell cycle arrest in MDA-MB-231 cancer cells. The results demonstrated that the degradation of polyamidoamines could be fine-tuned by an enzyme-active peptide, thus increasing the anti-tumour efficacy and pave the way for development of highly controllable targeted drug delivery platforms.


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