| Self-protecting core-shell magnetic nanoparticles for targeted, traceable, long half-life delivery of BCNU to gliomas. | |
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MedLine Citation:
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PMID: 21645920 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The successful delivery of anti-cancer drugs relies on the simultaneous capability to actively target a specific location, a sufficient lifetime in the active form in the circulation, and traceability and quantification of drug distribution via in vivo medical imaging. Herein, a highly magnetic nanocarrier (HMNC) composed of an Fe(3)O(4) core and an aqueous-stable, self-doped poly[N-(1-one-butyric acid)]aniline (SPAnH) shell was chemically synthesized. This nanocarrier exhibited a high capacity for 1,3-bis(2-chloroethyl)-1-nitrosourea (BCNU) drug loading. BCNU and o-(2-aminoethyl)polyethylene glycol (EPEG) were covalently immobilized on the surface of the HMNC to form a self-protecting magnetic nanomedicine (i.e., SPMNM) that could simultaneously provide low reticuloendothelial system uptake, high active-targeting, and in vivo magnetic resonance imaging (MRI) traceability. Meanwhile, the SPMNM was found to reduce the phagocytosis by macrophages and reduce the hydrolysis rate of BCNU. The high magnetization (approximately 1.2-fold higher than Resovist) of the HMNC allowed efficient magnetic targeting to the tumor. The synergetic drug delivery approach provided approximately a 3.4-fold improvement of the drug's half-life (from 18 h to 62 h) and significantly prolonged the median survival rate in animals that received a low dose of BCNU, compared with those that received a high dose of free BCNU (63 days for those that received 4.5 mg BCNU/kg carried by the nanocarrier versus 50 days for those that received 13.5 mg of free-BCNU). This improvement could enhance the potential of magnetic targeting therapy in clinical applications of cancer treatments. |
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Authors:
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Hung-Wei Yang; Mu-Yi Hua; Hao-Li Liu; Chiung-Yin Huang; Rung-Ywan Tsai; Yu-Jen Lu; Ju-Yu Chen; Hsiang-Jun Tang; Han-Yi Hsien; Yu-Sun Chang; Tzu-Chen Yen; Pin-Yuan Chen; Kuo-Chen Wei |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-6-4 |
Journal Detail:
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Title: Biomaterials Volume: - ISSN: 1878-5905 ISO Abbreviation: - Publication Date: 2011 Jun |
Date Detail:
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Created Date: 2011-6-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8100316 Medline TA: Biomaterials Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Molecular Medicine Research Center, Department of Chemical and Materials Engineering, Chang Gung University, 259 Wen-Hwa 1st Road, Kuei-Shan, Tao-Yuan 33302, Taiwan, ROC. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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