期刊
ADVANCED HEALTHCARE MATERIALS
卷 7, 期 21, 页码 -出版社
WILEY
DOI: 10.1002/adhm.201800266
关键词
breast cancer stem cell; doxorubicin; extra domain B of fibronectin; magnetic resonance imaging; theranostics
资金
- Basic Science Research Program through the National Research Foundation of Korea(NRF) - Ministry of Science, ICT and Future Planning [2015R1A2A1A05001860]
- National R&D Program for Cancer Control of the Ministry of Health Welfare [0920030]
- Bio & Medical Technology Development Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT [NRF-2018M3A9B5023527]
- Institutional Review Board (IRB) of Seoul National University Hospital [1604-063-754, 1608-131-787]
The feasibility of detecting breast cancer stem-like cells (BCSCs) with magnetic resonance imaging using extradomain-B of fibronectin (EDB-FN)-specific peptide (APT(EDB))-conjugated thermally cross-linked superparamagnetic iron oxide nanoparticles (APT(EDB)-TCL-SPIONs) is previously demonstrated. Here, doxorubicin (Dox)-loaded APT(EDB)-TCL-SPIONs (Dox@APT(EDB)-TCL-SPIONs) are generated and their theranostic ability in a BCSC xenograft mouse model is assessed. The Dox@APT(EDB)-TCL-SPIONs enable more efficient delivery of Dox to tumors than nontargeted Dox@TCL-SPIONs. Much greater inhibition of BCSC tumor growth is observed after treatment with the Dox@APT(EDB)-TCL-SPIONs than with either Dox@TCL-SPIONs or free Dox. Hypointense signals are observed in the majority of the mice in postcontrast but not precontrast T2*-weighted MR images of tumors 7 days after treatment with Dox@APT(EDB)-TCL-SPIONs. An inverse correlation is observed between signal intensity and both EDB-FN expression and response to chemotherapy. The data indicate Dox@APT(EDB)-TCL-SPIONs can detect BCSCs within tumors by targeting EDB-FN-expressing cells. These nanoparticles thus have theranostic potential in breast cancer.
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