期刊
INTERNATIONAL JOURNAL OF PHARMACEUTICS
卷 485, 期 1-2, 页码 50-60出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijpharm.2015.02.031
关键词
Gene delivery; Aptamer; Epithelial cell adhesion molecule; Single-walled carbon nanotube; siRNA
资金
- Mashhad University of Medical Sciences, Mashhad (MUMS), Iran
- Iran Nanotechnology Initiative
- Iran National Science Foundation
Epithelial cell adhesion molecule (EpCAM) is a glycosylated type 1 membrane protein which is frequently over expressed in most solid tumors and it has recently been identified as a cancer stem cell (CSC) marker. Specific targeting of CSCs using nano-carriers would enhance treatment efficacy of cancer. In this study, we used a RNA aptamer against EpCAM (EpDT3) attached physically to our newly synthesized non-viral vector, based on single-walled carbon nanotube (SWNT) conjugated to piperazine-polyethylenimine derivative. The DNA transfection efficiency and siRNA delivery activity of the synthesized vector was investigated against upregulated BCL9I, which has been associated with breast and colorectal cancers. The complexes of the vector-aptamer/siRNA could specifically induce apoptosis by more than 20% in MCF-7 cell line as a positive EpCAM than MDA-MB-231 cells which are EpCAM negative. The decrease of BCL9I protein level was observed with western blot analysis in MCF-7 cells indicating the targeted silencing activity of the complex. (C) 2015 Elsevier B.V. All rights reserved.
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