201
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Wang H, Wang JG, Zhou HJ, Liu YP, Sun PC, Chen TH. Facile fabrication of noble metal nanoparticles encapsulated in hollow silica with radially oriented mesopores: multiple roles of the N-lauroylsarcosine sodium surfactant. Chem Commun (Camb) 2011; 47:7680-2. [DOI: 10.1039/c1cc12823j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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202
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Liu J, Qiao SZ, Chen JS, (David) Lou XW, Xing X, (Max) Lu GQ. Yolk/shell nanoparticles: new platforms for nanoreactors, drug delivery and lithium-ion batteries. Chem Commun (Camb) 2011; 47:12578-91. [DOI: 10.1039/c1cc13658e] [Citation(s) in RCA: 736] [Impact Index Per Article: 56.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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203
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Teow Y, Valiyaveettil S. Active targeting of cancer cells using folic acid-conjugated platinum nanoparticles. NANOSCALE 2010; 2:2607-13. [PMID: 20936240 DOI: 10.1039/c0nr00204f] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Interaction of nanoparticles with human cells is an interesting topic for understanding toxicity and developing potential drug candidates. Water soluble platinum nanoparticles were synthesized via reduction of hexachloroplatinic acid using sodium borohydride in the presence of capping agents. The bioactivity of folic acid and poly(vinyl pyrrolidone) capped platinum nanoparticles (Pt-nps) has been investigated using commercially available cell lines. In the cell viability experiments, PVP-capped nanoparticles were found to be less toxic (>80% viability), whereas, folic acid-capped platinum nanoparticles showed a reduced viability down to 24% after 72 h of exposure at a concentration of 100 μg ml(-1) for MCF7 breast cancer cells. Such toxicity, combined with the possibility to incorporate functional organic molecules as capping agents, can be used for developing new drug candidates.
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Affiliation(s)
- Yiwei Teow
- Department of Chemistry, National University of Singapore (NUS), 3 Science Drive 3, 117543, Singapore.
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204
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Inorganic nanoparticles in cancer therapy. Pharm Res 2010; 28:237-59. [PMID: 21104301 DOI: 10.1007/s11095-010-0318-0] [Citation(s) in RCA: 213] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 11/01/2010] [Indexed: 01/10/2023]
Abstract
Nanotechnology is an evolving field with enormous potential for biomedical applications. The growing interest to use inorganic nanoparticles in medicine is due to the unique size- and shape-dependent optoelectronic properties. Herein, we will focus on gold, silver and platinum nanoparticles, discussing recent developments for therapeutic applications with regard to cancer in terms of nanoparticles being used as a delivery vehicle as well as therapeutic agents. We will also discuss some of the key challenges to be addressed in future studies.
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205
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Yoshihisa Y, Zhao QL, Hassan MA, Wei ZL, Furuichi M, Miyamoto Y, Kondo T, Shimizu T. SOD/catalase mimetic platinum nanoparticles inhibit heat-induced apoptosis in human lymphoma U937 and HH cells. Free Radic Res 2010; 45:326-35. [PMID: 21047173 DOI: 10.3109/10715762.2010.532494] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Platinum nanoparticles (Pt-NPs) are known to possess anti-tumouric activity and the ability to scavenge superoxides and peroxides indicating that they can act as superoxide dismutase (SOD)/catalase mimetics. These potentials seem useful in the protection and/or amelioration of oxidative stress-associated pathologies, but, when they are combined with a therapeutic modality that depends upon the mediation of reactive oxygen species in cell killing induction, the effect of Pt-NPs might be questionable. Here, the effects of polyacrylic acid-capped Pt-NPs (nano-Pts) on hyperthermia (HT)-induced apoptosis and the underlying molecular mechanisms were investigated in human myelomonocytic lymphoma U937 and human cutaneous T-cell lymphoma HH cells. The results showed that the pre-treatment with nano-Pts significantly inhibited HT-induced apoptosis in a dose-dependent manner. Superoxide, but not peroxides, was suppressed to varying extents. All pathways involved in apoptosis execution were also negatively affected. The results reveal that the combination of nano-Pts and HT could result in HT-desensitization.
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Affiliation(s)
- Yoko Yoshihisa
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
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206
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Park JC, Kim JY, Heo E, Park KH, Song H. Platinum-centered yolk-shell nanostructure formation by sacrificial nickel spacers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:16469-16473. [PMID: 20481526 DOI: 10.1021/la101248g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We have synthesized Pt@silica/nickel phyllosilicate and Pt@silica yolk-shell nanostructures from NiPt@silica core-shell particles by simple chemical treatments. Silica coating of the NiPt alloy nanoparticles via the microemulsion method yielded spherical NiPt@silica core-shell nanoparticles with an average core diameter of 6.5 nm. Under a reflux condition in water, the core-shell structure transformed into Pt@silica yolk-shell nanoparticles with branched nickel phyllosilicate, which exhibited high surface area and large pore volume. The addition of hydrochloric acid selectively etched the nickel component from the NiPt cores and yielded Pt@silica yolk-shell nanoparticles with single-crystalline platinum cores. The average diameter of the metal cores was reduced to 4.5 nm. In both cases, the nickel components behaved as sacrificial spacers and successfully formed a vacancy between the metal cores and the silica hollow shells.
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Affiliation(s)
- Ji Chan Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea
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207
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Wang Z, Luan D, Li CM, Su F, Madhavi S, Boey FYC, Lou XW. Engineering Nonspherical Hollow Structures with Complex Interiors by Template-Engaged Redox Etching. J Am Chem Soc 2010; 132:16271-7. [DOI: 10.1021/ja107871r] [Citation(s) in RCA: 225] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhiyu Wang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Energy Research Institute at NTU, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, and State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190
| | - Deyan Luan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Energy Research Institute at NTU, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, and State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190
| | - Chang Ming Li
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Energy Research Institute at NTU, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, and State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190
| | - Fabing Su
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Energy Research Institute at NTU, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, and State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190
| | - Srinivasan Madhavi
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Energy Research Institute at NTU, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, and State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190
| | - Freddy Yin Chiang Boey
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Energy Research Institute at NTU, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, and State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190
| | - Xiong Wen Lou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Energy Research Institute at NTU, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, and State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190
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208
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Zhou W, Liu H, Wang J, Liu D, Du G, Han S, Lin J, Wang R. Interface dominated high photocatalytic properties of electrostatic self-assembled Ag(2)O/TiO(2) heterostructure. Phys Chem Chem Phys 2010; 12:15119-23. [PMID: 20963235 DOI: 10.1039/c0cp00734j] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrostatic self-assembled Ag(2)O/TiO(2) nanobelts heterostructure was synthesized via simple physical mixing of Ag(2)O nanoparticles and TiO(2) nanobelts. The morphologies and microstructures of Ag(2)O/TiO(2) nanobelt heterostructure were characterized by high resolution transmission electron microscopy. The interface dominated high UV photocatalytic activity and degraded photoluminescence strength of composite catalyst confirmed the heterostructure effect between Ag(2)O nanoparticles and TiO(2) nanobelts. X-ray photoelectron spectroscope provided direct evidence of charge transfer on the heterostructures between them.
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Affiliation(s)
- Weijia Zhou
- State Key Laboratory of Crystal Materials, Center of Bio & Micro/Nano Functional Materials, Shandong University, 27 Shandanan Road, Jinan 250100, PR China
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209
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Synthesis and characterization of In2S3 nanocrystalline material for photovoltaic application. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.egypro.2010.07.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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210
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From iron oxide nanoparticles towards advanced iron-based inorganic materials designed for biomedical applications. Pharmacol Res 2010; 62:126-43. [DOI: 10.1016/j.phrs.2009.12.012] [Citation(s) in RCA: 367] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Accepted: 12/21/2009] [Indexed: 11/22/2022]
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211
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Hao R, Xing R, Xu Z, Hou Y, Gao S, Sun S. Synthesis, functionalization, and biomedical applications of multifunctional magnetic nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:2729-42. [PMID: 20473985 DOI: 10.1002/adma.201000260] [Citation(s) in RCA: 783] [Impact Index Per Article: 55.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Synthesis of multifunctional magnetic nanoparticles (MFMNPs) is one of the most active research areas in advanced materials. MFMNPs that have magnetic properties and other functionalities have been demonstrated to show great promise as multimodality imaging probes. Their multifunctional surfaces also allow rational conjugations of biological and drug molecules,making it possible to achieve target-specific diagnostics and therapeutics.This review fi rst outlines the synthesis of MNPs of metal oxides and alloy sand then focuses on recent developments in the fabrication of MFMNPs of core/shell, dumbbell, and composite hybrid type. It also summarizes the general strategies applied for NP surface functionalization. The review further highlights some exciting examples of these MFMNPs for multimodality imaging and for target-specific drug/gene delivery applications.
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Affiliation(s)
- Rui Hao
- Department of Advanced Materials and NanotechnologyPeking University, Beijing, People's Republic of China
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212
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Asharani PV, Lianwu Y, Gong Z, Valiyaveettil S. Comparison of the toxicity of silver, gold and platinum nanoparticles in developing zebrafish embryos. Nanotoxicology 2010; 5:43-54. [PMID: 21417687 DOI: 10.3109/17435390.2010.489207] [Citation(s) in RCA: 275] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Nanoparticles have diverse applications in electronics, medical devices, therapeutic agents and cosmetics. While the commercialization of nanoparticles is rapidly expanding, their health and environmental impact is not well understood. Toxicity assays of silver, gold, and platinum nanoparticles, using zebrafish embryos to study their developmental effects were carried out. Gold (Au-NP, 15-35 nm), silver (Ag-NP, 5-35 nm) and platinum nanoparticles (Pt-NP, 3-10 nm) were synthesized using polyvinyl alcohol (PVA) as a capping agent. Toxicity was recorded in terms of mortality, hatching delay, phenotypic defects and metal accumulation. The addition of Ag-NP resulted in a concentration-dependant increase in mortality rate. Both Ag-NP and Pt-NP induced hatching delays, as well as a concentration dependant drop in heart rate, touch response and axis curvatures. Ag-NP also induced other significant phenotypic changes including pericardial effusion, abnormal cardiac morphology, circulatory defects and absence or malformation of the eyes. In contrast, Au-NP did not show any indication of toxicity. Uptake and accumulation of nanoparticles in embryos was confirmed by inductively coupled plasma optical emission spectroscopy (ICP-OES), which revealed detectable levels in embryos within 72 hpf. Ag-NP and Au-NP were taken up by the embryos in relatively equal amounts whereas lower Pt concentrations were observed in embryos exposed to Pt-NP. This was probably due to the small size of the Pt nanoparticles compared to Ag-NP and Au-NP, thus resulting in fewer metal atoms being retained in the embryos. Among the nanoparticles studied, Ag-NPs were found to be the most toxic and Au-NPs the non-toxic. The toxic effects exhibited by the zebrafish embryos as a consequence of nanoparticle exposure, accompanied by the accumulation of metals inside the body calls for urgent further investigations in this field.
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Affiliation(s)
- P V Asharani
- Department of Chemistry, National University of Singapore, Singapore
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213
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Liu J, Qiao S, Budi Hartono S, Lu G. Monodisperse Yolk-Shell Nanoparticles with a Hierarchical Porous Structure for Delivery Vehicles and Nanoreactors. Angew Chem Int Ed Engl 2010; 49:4981-5. [DOI: 10.1002/anie.201001252] [Citation(s) in RCA: 513] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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214
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Liu J, Qiao S, Budi Hartono S, Lu G. Monodisperse Yolk-Shell Nanoparticles with a Hierarchical Porous Structure for Delivery Vehicles and Nanoreactors. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001252] [Citation(s) in RCA: 146] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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215
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Wu XJ, Xu D. Soft template synthesis of yolk/silica shell particles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:1516-1520. [PMID: 20437501 DOI: 10.1002/adma.200903879] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Yolk/shell particles possess a unique structure that is composed of hollow shells that encapsulate other particles but with an interstitial space between them. These structures are different from core/shell particles in that the core particles are freely movable in the shell. Yolk/shell particles combine the properties of each component, and can find potential applications in catalysis, lithium ion batteries, and biosensors. In this Research News article, a soft-template-assisted method for the preparation of yolk/silica shell particles is presented. The demonstrated method is simple and general, and can produce hollow silica spheres incorporated with different particles independent of their diameters, geometry, and composition. Furthermore, yolk/mesoporous silica shell particles and multishelled particles are also prepared through optimization of the experimental conditions. Finally, potential applications of these particles are discussed.
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Affiliation(s)
- Xue-Jun Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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216
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Asharani PV, Xinyi N, Hande MP, Valiyaveettil S. DNA damage and p53-mediated growth arrest in human cells treated with platinum nanoparticles. Nanomedicine (Lond) 2010; 5:51-64. [PMID: 20025464 DOI: 10.2217/nnm.09.85] [Citation(s) in RCA: 143] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM Platinum-based therapeutic agents are widely used in medicine. Thus, a thorough understanding of their mechanism of action in cells is warranted. This study investigates the uptake and bioactivity (e.g., cytotoxicity, genotoxicity and protein expression) of platinum nanoparticles (Pt-NPs, approximately 5-8 nm in size) in human cells. MATERIALS & METHODS Pt-NPs capped with polyvinyl alcohol were synthesized, characterized and incubated with human cells. Uptake and the biological properties were evaluated through metabolic activity, genome integrity, cell cycle and protein expression. RESULTS Pt-NPs entered the cells through diffusion, and localized inside the cytoplasm. Exposure to the Pt-NP increased DNA damage, accumulation of cells at the S-phase of the cell cycle and apoptosis. A significant number of cells recovered from the stress and formed colonies. Protein-expression levels uncovered upregulation of p53, phosphorylated p53, p21 and downregulation of proliferating cell nuclear antigen following Pt-NP treatment. Pro-caspase 3 and poly-ADP ribose polymerase and cyclin B levels were not altered in both the cell types after Pt-NP exposure. CONCLUSION The results suggest p53 activation in Pt-NP-treated cells due to genotoxic stress, with subsequent activation of p21 leading to a proliferating cell nuclear antigen-mediated growth arrest and apoptosis. This study recommends development of Pt-NP-based anticancer agents by appropriate surface modifications to augment its innate anticancer activity.
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Affiliation(s)
- P V Asharani
- Department of Chemistry, Faculty of Science, 3 Science Drive 3, National University of Singapore, Singapore.
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217
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Ding Y, Hu Y, Wu W, Jiang X. Polymer-assisted nanoparticulate contrast-enhancing materials. Sci China Chem 2010. [DOI: 10.1007/s11426-010-0102-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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218
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Chen A, Holt-Hindle P. Platinum-Based Nanostructured Materials: Synthesis, Properties, and Applications. Chem Rev 2010; 110:3767-804. [DOI: 10.1021/cr9003902] [Citation(s) in RCA: 1154] [Impact Index Per Article: 82.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aicheng Chen
- Department of Chemistry, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Peter Holt-Hindle
- Department of Chemistry, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
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219
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Cho EC, Camargo PHC, Xia Y. Synthesis and characterization of noble-metal nanostructures containing gold nanorods in the center. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:744-748. [PMID: 20217782 DOI: 10.1002/adma.200903097] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Affiliation(s)
- Eun Chul Cho
- Department of Biomedical Engineering, School of Engineering and Applied Science, Washington University, St. Louis, MO 63130, USA
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220
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Anisur RM, Shin J, Choi HH, Yeo KM, Kang EJ, Lee IS. Hollow silica nanosphere having functionalized interior surface with thin manganese oxide layer: nanoreactor framework for size-selective Lewis acid catalysis. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm02647f] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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221
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Yang L, Zhang M, Lan Y, Zhang W. Hollow shell–corona microspheres with a mesoporous shell as potential microreactors for Au-catalyzed aerobic oxidation of alcohols. NEW J CHEM 2010. [DOI: 10.1039/b9nj00802k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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222
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Cheng K, Peng S, Xu C, Sun S. Porous hollow Fe(3)O(4) nanoparticles for targeted delivery and controlled release of cisplatin. J Am Chem Soc 2009; 131:10637-44. [PMID: 19722635 DOI: 10.1021/ja903300f] [Citation(s) in RCA: 280] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report a new approach to cisplatin storage and release using porous hollow nanoparticles (PHNPs) of Fe(3)O(4). We prepared the PHNPs by controlled oxidation of Fe NPs at 250 degrees C followed by acid etching. The opening pores ( approximately 2-4 nm) facilitated the cisplatin diffusion into the cavity of the hollow structure. The porous shell was stable in neutral or basic physiological conditions, and cisplatin escape from the cavity through the same pores was a diffusion-controlled slow process with t(1/2) = 16 h. However, in low pH (<6) conditions, the pores were subject to acidic etching, resulting in wider pore gaps and faster release of cisplatin with t(1/2) < 4 h. Once coupled with Herceptin to the surface, the cisplatin-loaded hollow NPs could target to breast cancer SK-BR-3 cells with IC(50) reaching 2.9 muM, much lower than 6.8 muM needed for free cisplatin. Our model experiments indicate that the low pH-responsive PHNPs of Fe(3)O(4) can be exploited as a cisplatin delivery vehicle for target-specific therapeutic applications.
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Affiliation(s)
- Kai Cheng
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
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223
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Pan J, Xiong S, Xi B, Li J, Li J, Zhou H, Qian Y. Tartatric Acid and L-Cysteine Synergistic-Assisted Synthesis of Antimony Trisulfide Hierarchical Structures in Aqueous Solution. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900607] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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224
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Xu C, Yuan Z, Kohler N, Kim J, Chung MA, Sun S. FePt nanoparticles as an Fe reservoir for controlled Fe release and tumor inhibition. J Am Chem Soc 2009; 131:15346-51. [PMID: 19795861 PMCID: PMC2791709 DOI: 10.1021/ja905938a] [Citation(s) in RCA: 132] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chemically disordered face centered cubic (fcc) FePt nanoparticles (NPs) show the controlled release of Fe in low pH solution. The released Fe catalyzes H(2)O(2) decomposition into reactive oxygen species within cells, causing fast oxidation and deterioration of cellular membranes. Functionalized with luteinizing hormone-releasing hormone (LHRH) peptide via phospholipid, the fcc-FePt NPs can bind preferentially to the human ovarian cancer cell line (A2780) that overexpresses LHRH receptors and exhibit high toxicity to these tumor cells. In contrast, the fcc-FePt NPs pre-etched in the low pH (4.8) buffer solution show nonappreciable cytotoxicity. The work demonstrates that fcc-FePt NPs may function as a new type of agent for controlled cancer therapy.
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Affiliation(s)
- Chenjie Xu
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Zhenglong Yuan
- Department of Surgery, Rhode Island Hospital, Brown University, Providence, Rhode Island 02903
| | - Nathan Kohler
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Jaemin Kim
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Maureen A. Chung
- Department of Surgery, Rhode Island Hospital, Brown University, Providence, Rhode Island 02903
| | - Shouheng Sun
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
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225
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Song JY, Kwon EY, Kim BS. Biological synthesis of platinum nanoparticles using Diopyros kaki leaf extract. Bioprocess Biosyst Eng 2009; 33:159-64. [DOI: 10.1007/s00449-009-0373-2] [Citation(s) in RCA: 253] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Accepted: 08/05/2009] [Indexed: 11/30/2022]
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226
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Gao J, Gu H, Xu B. Multifunctional magnetic nanoparticles: design, synthesis, and biomedical applications. Acc Chem Res 2009; 42:1097-107. [PMID: 19476332 DOI: 10.1021/ar9000026] [Citation(s) in RCA: 1077] [Impact Index Per Article: 71.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The combination of nanotechnology and molecular biology has developed into an emerging research area: nanobiotechnology. Magnetic nanoparticles are well-established nanomaterials that offer controlled size, ability to be manipulated externally, and enhancement of contrast in magnetic resonance imaging (MRI). As a result, these nanoparticles could have many applications in biology and medicine, including protein purification, drug delivery, and medical imaging. Because of the potential benefits of multimodal functionality in biomedical applications, researchers would like to design and fabricate multifunctional magnetic nanoparticles. Currently, there are two strategies to fabricate magnetic nanoparticle-based multifunctional nanostructures. The first, molecular functionalization, involves attaching antibodies, proteins, and dyes to the magnetic nanoparticles. The other method integrates the magnetic nanoparticles with other functional nanocomponents, such as quantum dots (QDs) or metallic nanoparticles. Because they can exhibit several features synergistically and deliver more than one function simultaneously, such multifunctional magnetic nanoparticles could have unique advantages in biomedical applications. In this Account, we review examples of the design and biomedical application of multifunctional magnetic nanoparticles. After their conjugation with proper ligands, antibodies, or proteins, the biofunctional magnetic nanoparticles exhibit highly selective binding. These results indicate that such nanoparticles could be applied to biological medical problems such as protein purification, bacterial detection, and toxin decorporation. The hybrid nanostructures, which combine magnetic nanoparticles with other nanocomponents, exhibit paramagnetism alongside features such as fluorescence or enhanced optical contrast. Such structures could provide a platform for enhanced medical imaging and controlled drug delivery. We expect that the combination of unique structural characteristics and integrated functions of multicomponent magnetic nanoparticles will attract increasing research interest and could lead to new opportunities in nanomedicine.
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Affiliation(s)
- Jinhao Gao
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Hongwei Gu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
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227
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Xiao L, Li J, Li Q, Zhang L. One-pot template-free synthesis, formation mechanism, and lithium ions storage property of hollow SnO2 microspheres. J Solid State Electrochem 2009. [DOI: 10.1007/s10008-009-0885-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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228
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Pérez-Quintanilla D, Gómez-Ruiz S, Zizak Z, Sierra I, Prashar S, del Hierro I, Fajardo M, Juranić ZD, Kaluderović GN. A new generation of anticancer drugs: mesoporous materials modified with titanocene complexes. Chemistry 2009; 15:5588-97. [PMID: 19370742 DOI: 10.1002/chem.200900151] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Dehydroxylated MCM-41 and SBA-15 surfaces were modified by the grafting of two different titanocene complexes ([Ti(eta(5)-C(5)H(4)Me)(2)Cl(2)] and [Ti{Me(2)Si(eta(5)-C(5)Me(4))(eta(5)-C(5)H(4))}Cl(2)]) to give new materials, which have been characterized by powder X-ray diffraction, X-ray fluorescence, nitrogen gas sorption, MAS-NMR spectroscopy, thermogravimetry, SEM, and TEM. The toxicity of the resulting materials toward human adenocarcinoma HeLa, human myelogenous leukemia K562, human malignant melanoma Fem-x, and normal immunocompetent cells, such as peripheral blood mononuclear cells PBMC has been studied. Estimation of the number of particles per gram of material led to the calculation of Q(50) values for these samples, which is the number of particles required to inhibit normal cell growth by 50%. In addition, M(50) values (quantity of material needed to inhibit normal cell growth by 50%) of the studied surfaces is also reported. Nonfunctionalized MCM-41 and SBA-15 did not show notable antiproliferative activity, whereas functionalization of these materials with different titanocene based anticancer drugs led to very promising antitumoral activity. The best Q(50) values correspond to titanocene functionalized MCM-41 surfaces (MCM-41/[Ti(eta(5)-C(5)H(4)Me)(2)Cl(2)] (1) and MCM-41/[Ti{Me(2)Si(eta(5)-C(5)Me(4))(eta(5)-C(5)H(4))}Cl(2)] (2)) with Q(50) values between 3.8+/-0.6x10(8) and 24.5+/-3.0x10(8) particles. Titanocene functionalized SBA-15 surfaces (SBA-15/[Ti(eta(5)-C(5)H(4)Me)(2)Cl(2)] (3) and SBA-15/[Ti{Me(2)Si(eta(5)-C(5)Me(4))(eta(5)-C(5)H(4))}Cl(2)] (4)) gave higher Q(50) values, showing lower activity from 73.2+/-9.9x10(8) to 362+/-7x10(8) particles. The best response of the studied materials in terms of M(50) values was observed against Fem-x (309+/-42 microg for 4) and K562 (338+/-18 microg for 2), whereas moderate activities were observed in HeLa cells (from 508+/-63 microg of 2 to 912+/-10 microg of 1). In addition, the analyzed surfaces presented only marginal activity against unstimulated and stimulated PBMC, showing a slight selectivity on human cancer cells. Comparison of the in vitro cytotoxicity in solution of the titanocene complexes [Ti(eta(5)-C(5)H(4)Me)(2)Cl(2)] and [Ti{Me(2)Si(eta(5)-C(5)Me(4))(eta(5)-C(5)H(4))}Cl(2)] and the corresponding titanocene functionalized materials is also described.
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Affiliation(s)
- Damian Pérez-Quintanilla
- Departamento de Química Inorgánica y Analítica, E.S.C.E.T. Universidad Rey Juan Carlos, 28933 Móstoles, Madrid, Spain
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229
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Yang J, Peng J, Zhang Q, Peng F, Wang H, Yu H. One-Step Synthesis and Characterization of Gold-Hollow PbSxHybrid Nanoparticles. Angew Chem Int Ed Engl 2009; 48:3991-5. [DOI: 10.1002/anie.200806036] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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230
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Yang J, Peng J, Zhang Q, Peng F, Wang H, Yu H. One-Step Synthesis and Characterization of Gold-Hollow PbSxHybrid Nanoparticles. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200806036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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231
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Hilder TA, Hill JM. Modeling the loading and unloading of drugs into nanotubes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:300-308. [PMID: 19058282 DOI: 10.1002/smll.200800321] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
One of the most promising applications of nanotechnology is that of drug delivery, and in particular the targeted delivery of drugs using nanotubes. Functionalized nanotubes might be able to target specific cells, become ingested, and then release their contents in response to a chemical trigger. This will have significant implications for the future treatment of patients, particularly those suffering from cancer, for whom presently the nonspecific nature of chemotherapy often kills healthy normal cells. Research to date has largely been through experiments investigating toxicity, biocompatibility, solubility, functionalization, and cellular uptake. More recently, the loading and unloading of molecular cargo has gained momentum from both experimental and theoretical investigations. This Review focuses on the loading and unloading of molecular cargo and highlights recent theoretical investigations, which to date have received very little attention in the review literature. The development of nanotube drug-delivery capsules is of vital concern for the improvement of medical treatment, and mathematical modeling tends to facilitate such development and provides a quicker route to applications of the technology. This Review highlights the latest progress in terms of theoretical investigations and provides a focus for the development of the next generation of medical therapeutics.
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Affiliation(s)
- Tamsyn A Hilder
- Nanomechanics Group, School of Mathematics and Applied Statistics, University of Wollongong, Wollongong, NSW, Australia. tamsyn.hilder@.edu.au
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232
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Wu XJ, Xu D. Formation of Yolk/SiO2 Shell Structures Using Surfactant Mixtures as Template. J Am Chem Soc 2009; 131:2774-5. [DOI: 10.1021/ja808452r] [Citation(s) in RCA: 176] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xue-Jun Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Dongsheng Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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233
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Shin J, Anisur RM, Ko MK, Im GH, Lee JH, Lee IS. Hollow manganese oxide nanoparticles as multifunctional agents for magnetic resonance imaging and drug delivery. Angew Chem Int Ed Engl 2009; 48:321-4. [PMID: 19040234 DOI: 10.1002/anie.200802323] [Citation(s) in RCA: 327] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jongmin Shin
- Department of Chemistry & Advanced Material Sciences, Kyung Hee University, Gyeonggi-do 446-701, Korea
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234
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Zhang Y, Li Y, Yan XP. Aqueous layer-by-layer epitaxy of type-II CdTe/CdSe quantum dots with near-infrared fluorescence for bioimaging applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:185-189. [PMID: 19016250 DOI: 10.1002/smll.200800473] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Yi Zhang
- Research Center for Analytical Sciences College of Chemistry, Nankai University Tianjin 300071 (P. R. China)
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235
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Hollow Manganese Oxide Nanoparticles as Multifunctional Agents for Magnetic Resonance Imaging and Drug Delivery. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200802323] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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236
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Pattanayak P, Pratihar JL, Patra D, Mitra S, Bhattacharyya A, Man Lee H, Chattopadhyay S. Synthesis, structure and reactivity of azosalophen complexes of vanadium(IV): studies on cytotoxic properties. Dalton Trans 2009:6220-30. [DOI: 10.1039/b903352a] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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237
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He S, Garcia I, Gallo J, Penadés S. A step-heating procedure for the synthesis of high-quality FePt nanostars. CrystEngComm 2009. [DOI: 10.1039/b909022n] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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238
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Zhu J, Shen Y, Xie A, Zhu L. Tunable surface plasmon resonance of Au@Ag2S core–shell nanostructures containing voids. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b914550h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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239
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Jeon S, Yong K. A novel composite hierarchical hollow structure: one-pot synthesis and magnetic properties of W18O49–WO2 hollow nanourchins. Chem Commun (Camb) 2009:7042-4. [DOI: 10.1039/b916234h] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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240
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Liu S, Ding N, Ye E, Zong Y, Wang D, Knoll W, Han MY. Oxidation-induced constituent separation of magnetic exchange biased Fe/CoO nanocrystals. Chem Commun (Camb) 2009:6255-7. [DOI: 10.1039/b912976f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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241
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An K, Kwon SG, Park M, Na HB, Baik SI, Yu JH, Kim D, Son JS, Kim YW, Song IC, Moon WK, Park HM, Hyeon T. Synthesis of uniform hollow oxide nanoparticles through nanoscale acid etching. NANO LETTERS 2008; 8:4252-8. [PMID: 19367964 DOI: 10.1021/nl8019467] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We synthesized various hollow oxide nanoparticles from as-prepared MnO and iron oxide nanocrystals. Heating metal oxide nanocrystals dispersed in technical grade trioctylphosphine oxide (TOPO) at 300 degrees C for hours yielded hollow nanoparticles retaining the size and shape uniformity of the original nanocrystals. The method was highly reproducible and could be generalized to synthesize hollow oxide nanoparticles of various sizes, shapes, and compositions. Control experiments revealed that the impurities in technical grade TOPO, especially alkylphosphonic acid, were responsible for the etching of metal oxide nanocrystals to the hollow structures. Elemental mapping analysis revealed that the inward diffusion of phosphorus and the outward diffusion of metal took place in the intermediate stages during the etching process. The elemental analysis using XPS, EELS, and EDX showed that the hollow nanoparticles were amorphous metal oxides containing significant amount of phosphorus. The hollow nanoparticles synthesized from MnO and iron oxide nanocrystals were paramagnetic at room temperature and when dispersed in water showed spin relaxation enhancement effect for magnetic resonance imaging (MRI). Because of their morphology and magnetic property, the hollow nanoparticles would be utilized for multifunctional biomedical applications such as the drug delivery vehicles and the MRI contrast agents.
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Affiliation(s)
- Kwangjin An
- National Creative Research Initiative Center for Oxide Nanocrystalline Materials, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
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242
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Lee Y, Lee H, Kim YB, Kim J, Hyeon T, Park H, Messersmith PB, Park TG. Bioinspired Surface Immobilization of Hyaluronic Acid on Monodisperse Magnetite Nanocrystals for Targeted Cancer Imaging. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2008; 20:4154-4157. [PMID: 19606262 DOI: 10.1002/adma.200701726] [Citation(s) in RCA: 278] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- Yuhan Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea)
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243
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Lai CW, Wang YH, Uttam BP, Chen YC, Hsiao JK, Liu CL, Liu HM, Chen CY, Chou PT. One-pot solvothermal synthesis of FePt/Fe3O4 core-shell nanoparticles. Chem Commun (Camb) 2008:5342-4. [PMID: 18985204 DOI: 10.1039/b810965f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Via a facile, one-pot solvothermal synthesis, highly uniform FePt/Fe3O4 core-shell nanoparticles are successfully developed, which further demonstrates their superiority in the MR imaging of living cells.
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Affiliation(s)
- Chih-Wei Lai
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
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244
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Han W, Yi L, Zhao N, Tang A, Gao M, Tang Z. Synthesis and Shape-Tailoring of Copper Sulfide/Indium Sulfide-Based Nanocrystals. J Am Chem Soc 2008; 130:13152-61. [DOI: 10.1021/ja8046393] [Citation(s) in RCA: 230] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wei Han
- Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing 100190, China
| | - Luoxin Yi
- Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing 100190, China
| | - Nan Zhao
- Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing 100190, China
| | - Aiwei Tang
- Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing 100190, China
| | - Mingyuan Gao
- Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing 100190, China
| | - Zhiyong Tang
- Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing 100190, China
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245
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Sun C, Lee JSH, Zhang M. Magnetic nanoparticles in MR imaging and drug delivery. Adv Drug Deliv Rev 2008; 60:1252-1265. [PMID: 18558452 DOI: 10.1016/j.addr.2008.03.018] [Citation(s) in RCA: 1384] [Impact Index Per Article: 86.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2007] [Accepted: 03/12/2008] [Indexed: 11/15/2022]
Abstract
Magnetic nanoparticles (MNPs) possess unique magnetic properties and the ability to function at the cellular and molecular level of biological interactions making them an attractive platform as contrast agents for magnetic resonance imaging (MRI) and as carriers for drug delivery. Recent advances in nanotechnology have improved the ability to specifically tailor the features and properties of MNPs for these biomedical applications. To better address specific clinical needs, MNPs with higher magnetic moments, non-fouling surfaces, and increased functionalities are now being developed for applications in the detection, diagnosis, and treatment of malignant tumors, cardiovascular disease, and neurological disease. Through the incorporation of highly specific targeting agents and other functional ligands, such as fluorophores and permeation enhancers, the applicability and efficacy of these MNPs have greatly increased. This review provides a background on applications of MNPs as MR imaging contrast agents and as carriers for drug delivery and an overview of the recent developments in this area of research.
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Affiliation(s)
- Conroy Sun
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
| | - Jerry S H Lee
- Office of Technology and Industrial Relations, National Cancer Institute, Bethesda, MD 20892, USA
| | - Miqin Zhang
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
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246
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Gao J, Liang G, Cheung JS, Pan Y, Kuang Y, Zhao F, Zhang B, Zhang X, Wu EX, Xu B. Multifunctional Yolk−Shell Nanoparticles: A Potential MRI Contrast and Anticancer Agent. J Am Chem Soc 2008; 130:11828-33. [DOI: 10.1021/ja803920b] [Citation(s) in RCA: 323] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jinhao Gao
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Gaolin Liang
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Jerry S. Cheung
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yue Pan
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yi Kuang
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Fan Zhao
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Bei Zhang
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Xixiang Zhang
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Ed X. Wu
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Bing Xu
- Department of Chemistry, Bioengineering Program, and Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, and Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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247
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Lim B, Wang J, Camargo PHC, Jiang M, Kim MJ, Xia Y. Facile synthesis of bimetallic nanoplates consisting of Pd cores and Pt shells through seeded epitaxial growth. NANO LETTERS 2008; 8:2535-2540. [PMID: 18616327 DOI: 10.1021/nl8016434] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Pd-Pt core-shell nanoplates with hexagonal and triangular shapes were synthesized through the heterogeneous, epitaxial growth of Pt on Pd nanoplates. The Pd nanoplates were synthesized by reducing Na2PdCl4 precursor with PVP as a reducing agent, which then served as seeds for the nucleation of Pt atoms formed by reducing H2PtCl6 with citric acid. Characterization of the as-prepared Pd-Pt nanoplates by scanning transmission electron microscopy and high-resolution transmission electron microscopy reveals that a thin, uniform Pt shell was formed around the Pd nanoplate, demonstrating the layer-by-layer epitaxial growth of Pt on Pd surface in this approach. The close lattice match between Pd and Pt (lattice mismatch of only 0.77%) and the slow reduction rate associated with the mild reducing power of citric acid play key roles in achieving the epitaxial growth of Pt shells on Pd nanoplates.
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Affiliation(s)
- Byungkwon Lim
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA
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248
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Di Pasqua AJ, Sharma KK, Shi YL, Toms BB, Ouellette W, Dabrowiak JC, Asefa T. Cytotoxicity of mesoporous silica nanomaterials. J Inorg Biochem 2008; 102:1416-23. [DOI: 10.1016/j.jinorgbio.2007.12.028] [Citation(s) in RCA: 155] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2007] [Revised: 12/20/2007] [Accepted: 12/24/2007] [Indexed: 10/22/2022]
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249
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Jun Y, Lee J, Cheon J. Chemisches Design von leistungsfähigen Nanosonden für die Kernspintomographie. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200701674] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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250
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Jun Y, Lee J, Cheon J. Chemical Design of Nanoparticle Probes for High‐Performance Magnetic Resonance Imaging. Angew Chem Int Ed Engl 2008; 47:5122-35. [DOI: 10.1002/anie.200701674] [Citation(s) in RCA: 749] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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