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In vivo visualization of endogenous miR-21 using hyaluronic acid-coated graphene oxide for targeted cancer therapy
Cited 87 time in
Web of Science
Cited 86 time in Scopus
- Authors
- Issue Date
- 2017-03
- Publisher
- Pergamon Press Ltd.
- Citation
- Biomaterials, Vol.121, pp.144-154
- Abstract
- Oncogene-targeted nucleic acid therapy has been spotlighted as a new paradigm for cancer therapeutics. However, in vivo delivery issues and uncertainty of therapeutic antisense drug reactions remain critical hurdles for a successful targeted cancer therapy. In this study, we developed a fluorescence-switchable theranostic nanoplatform using hyaluronic acid (HA)-conjugated graphene oxide (GO), which is capable of both sensing oncogenic miR-21 and inhibiting its tumorigenicity simultaneously. Cy3-labeled anti sense miR-21 peptide nucleic acid (PNA) probes loaded onto HA-GO (HGP21) specifically targeted CD44-positive MBA-MB231 cells and showed fluorescence recovery by interacting with endogenous miR-21 in the cytoplasm of the MBA-MB231 cells. Knockdown of endogenous miR-21 by HGP21 led to decreased proliferation and reduced migration of cancer cells, as well as the induction of apoptosis, with enhanced PTEN levels. Interestingly, in vivo fluorescence signals markedly recovered 3 h after the intravenous delivery of HGP21 and displayed signals more than 5-fold higher than those observed in the HGPscrtreated group of tumor-bearing mice. These findings demonstrate the possibility of using the HGP nanoplatform as a cancer theranostic tool in miRNA-targeted therapy. (C) 2017 Elsevier Ltd. All rights reserved.
- ISSN
- 0142-9612
- Language
- English
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