551
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Hu C, Mou Z, Lu G, Chen N, Dong Z, Hu M, Qu L. 3D graphene–Fe3O4 nanocomposites with high-performance microwave absorption. Phys Chem Chem Phys 2013; 15:13038-43. [DOI: 10.1039/c3cp51253c] [Citation(s) in RCA: 284] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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552
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Teng Z, Sun C, Su X, Liu Y, Tang Y, Zhao Y, Chen G, Yan F, Yang N, Wang C, Lu G. Superparamagnetic high-magnetization composite spheres with highly aminated ordered mesoporous silica shell for biomedical applications. J Mater Chem B 2013; 1:4684-4691. [DOI: 10.1039/c3tb20844c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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553
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Wang Y, Yang P, Ma P, Qu F, Gai S, Niu N, He F, Lin J. Hollow structured SrMoO4:Yb3+, Ln3+ (Ln = Tm, Ho, Tm/Ho) microspheres: tunable up-conversion emissions and application as drug carriers. J Mater Chem B 2013; 1:2056-2065. [DOI: 10.1039/c3tb00377a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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554
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Chen NT, Cheng SH, Souris JS, Chen CT, Mou CY, Lo LW. Theranostic applications of mesoporous silica nanoparticles and their organic/inorganic hybrids. J Mater Chem B 2013; 1:3128-3135. [DOI: 10.1039/c3tb20249f] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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555
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Chen X, Zhao Z, Jiang M, Que D, Shi S, Zheng N. Preparation and photodynamic therapy application of NaYF4:Yb, Tm–NaYF4:Yb, Er multifunctional upconverting nanoparticles. NEW J CHEM 2013. [DOI: 10.1039/c3nj00065f] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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556
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Jun SW, Shokouhimehr M, Lee DJ, Jang Y, Park J, Hyeon T. One-pot synthesis of magnetically recyclable mesoporous silica supported acid–base catalysts for tandem reactions. Chem Commun (Camb) 2013; 49:7821-3. [DOI: 10.1039/c3cc43568g] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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557
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Jayabal S, Ramaraj R. Synthesis of core/shell Au/Ag nanorods embedded in functionalized silicate sol–gel matrix and their applications in electrochemical sensors. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.10.065] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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558
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Wang ZG, Cheng G, Liu YL, Zhang JL, Sun DH, Ni JZ. Magnetic γ-Fe2O3@REVO4 (RE = Sm, Dy, Ho) affinity microspheres for selective capture, fast separation and easy identification of phosphopeptides. J Mater Chem B 2013; 1:1491-1500. [DOI: 10.1039/c2tb00431c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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559
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Zhao J, Niu W, Zhang L, Cai H, Han M, Yuan Y, Majeed S, Anjum S, Xu G. A Template-Free and Surfactant-Free Method for High-Yield Synthesis of Highly Monodisperse 3-Aminophenol–Formaldehyde Resin and Carbon Nano/Microspheres. Macromolecules 2012. [DOI: 10.1021/ma302119t] [Citation(s) in RCA: 142] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianming Zhao
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
People’s Republic of China
- University of Chinese Academy
of Sciences, Chinese Academy of Sciences, No. 19A Yuquanlu, Beijing 100049, People’s Republic of China
| | - Wenxin Niu
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
People’s Republic of China
- University of Chinese Academy
of Sciences, Chinese Academy of Sciences, No. 19A Yuquanlu, Beijing 100049, People’s Republic of China
| | - Ling Zhang
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
People’s Republic of China
- University of Chinese Academy
of Sciences, Chinese Academy of Sciences, No. 19A Yuquanlu, Beijing 100049, People’s Republic of China
| | - Haoran Cai
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
People’s Republic of China
| | - Moyan Han
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
People’s Republic of China
| | - Yali Yuan
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
People’s Republic of China
| | - Saadat Majeed
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
People’s Republic of China
- University of Chinese Academy
of Sciences, Chinese Academy of Sciences, No. 19A Yuquanlu, Beijing 100049, People’s Republic of China
- Department of Chemistry, Bahauddin Zakaryia University Multan, 60800, Pakistan
| | - Saima Anjum
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
People’s Republic of China
- University of Chinese Academy
of Sciences, Chinese Academy of Sciences, No. 19A Yuquanlu, Beijing 100049, People’s Republic of China
- Department of Chemistry, Faculty
of Science, The Islamia University of Bahawalpur, 63100, Pakistan
| | - Guobao Xu
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
People’s Republic of China
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560
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Wu Q, Liu C, Fan L, Shi J, Liu Z, Li R, Sun L. Heparinized magnetic mesoporous silica nanoparticles as multifunctional growth factor delivery carriers. NANOTECHNOLOGY 2012; 23:485703. [PMID: 23128185 DOI: 10.1088/0957-4484/23/48/485703] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Well-defined magnetic mesoporous silica nanoparticles (MMSNs) with a core/shell structure were prepared via a one pot synthesis. Sphere-like magnetite aggregates were obtained as cores of the final nanoparticles by assembly in the presence of polyvinyl pyrrolidone and cetyltrimethylammonium bromide. The nanoparticles have the property of superparamagnetism with a saturation magnetization value of 20.3 emu g(-1). In addition, the combination of heparin and fluorescence-labeled MMSNs endows the resultant particles (denoted as MFMSNs-HP) with magnetism and fluorescence properties, excellent dispersity in the buffer solutions and cell culture media, anticoagulant activity in the blood stream, and the controlled release of basic fibroblast growth factor (bFGF). Furthermore, the bFGF cell viability assays indicate that MFMSNs-HP has nearly no toxicity to human umbilical vein endothelial cells (HUVEC) up to a concentration of 200 μg ml(-1), and the proliferation activity of bFGF incorporated into MFMSNs-HP could be retained for at least 6 days. All of these suggest that MFMSNs-HP may serve as a multifunctional carrier for the delivery of growth factors.
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Affiliation(s)
- Qiang Wu
- College of Pharmacy, Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Institute of Environmental Health, Henan University, Kaifeng, People's Republic of China.
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561
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Xue M, Cao D, Stoddart JF, Zink JI. Size-selective pH-operated megagates on mesoporous silica materials. NANOSCALE 2012; 4:7569-7574. [PMID: 23108219 PMCID: PMC3884833 DOI: 10.1039/c2nr32170j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
pH-responsive megagates have been fabricated around mesoporous silica material SBA-15 in order to mechanize the mesopores. These megagates remain closed in neutral conditions, but open at pH 5. The capping components of the megagates were designed to be capable of controlling pores up to 6.5 nm in diameter. Selectivity of payloads with different sizes can be achieved through the use of different capping components. The operation of the megagates was demonstrated by time-resolved fluorescence spectroscopy which is capable of monitoring the release of both the payload and the cap. This study opens up new possibilities in the field of controllable release.
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Affiliation(s)
- Min Xue
- Department of Chemistry and Biochemistry, and California Nano Systems Institute, University of California, Los Angeles, CA 90095, USA
| | - Dennis Cao
- Center for the Chemistry of Integrated Systems, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA. ; Fax: +1 847-491-1009
- NanoCentury KAIST Institute and Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong Dong, Yuseong Gu, Daejeon 305-701, Republic of Korea
| | - J. Fraser Stoddart
- Center for the Chemistry of Integrated Systems, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA. ; Fax: +1 847-491-1009
- NanoCentury KAIST Institute and Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong Dong, Yuseong Gu, Daejeon 305-701, Republic of Korea
| | - Jeffrey I. Zink
- Department of Chemistry and Biochemistry, and California Nano Systems Institute, University of California, Los Angeles, CA 90095, USA
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562
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Reddy LH, Arias JL, Nicolas J, Couvreur P. Magnetic nanoparticles: design and characterization, toxicity and biocompatibility, pharmaceutical and biomedical applications. Chem Rev 2012; 112:5818-78. [PMID: 23043508 DOI: 10.1021/cr300068p] [Citation(s) in RCA: 1121] [Impact Index Per Article: 93.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- L Harivardhan Reddy
- Laboratoire de Physico-Chimie, Pharmacotechnie et Biopharmacie, Université Paris-Sud XI, UMR CNRS, Faculté de Pharmacie, IFR, Châtenay-Malabry, France
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563
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Hong SK, Ma JY, Kim JC. Preparation of iron oxide nanoparticles within monoolein cubic phase. J IND ENG CHEM 2012. [DOI: 10.1016/j.jiec.2012.05.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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564
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Lu X, Wu J, Huo G, Sun Q, Huang Y, Han Z, Liang G. Protein-passivated FeNi3 particles with low toxicity and high inductive heating efficiency for thermal therapy. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.08.062] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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565
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Engineering imaging probes and molecular machines for nanomedicine. SCIENCE CHINA-LIFE SCIENCES 2012; 55:843-61. [DOI: 10.1007/s11427-012-4380-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 09/10/2012] [Indexed: 12/21/2022]
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566
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Guan B, Cui Y, Ren Z, Qiao ZA, Wang L, Liu Y, Huo Q. Highly ordered periodic mesoporous organosilica nanoparticles with controllable pore structures. NANOSCALE 2012; 4:6588-6596. [PMID: 22976432 DOI: 10.1039/c2nr31662e] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A general synthetic procedure for highly ordered and well-dispersed periodic mesoporous organosilica (PMO) nanoparticles is reported based on a single cationic surfactant cetyltrimethylammonium bromide (CTAB) and simple silica sources with organic bridging groups via an ammonia-catalyzed sol-gel reaction. By changing the bridging group in the silica sources, the pore structures of the as-made particles with three-dimensional hexagonal (P6(3)/mmc), cubic (Pm3n), two-dimensional hexagonal (P6mm), and wormlike structure were evidenced by powder X-ray diffraction analysis (XRD) and transmission electron microscopy (TEM). The size range of the nanoparticles can be adjusted from 30 nm to 500 nm by variation of the ammonia concentration or the co-solvent content of the reaction medium. The PMO nanoparticles with high concentration of organic groups in the framework offered good thermal stability, good dispersion in low polarity solvent and high adsorption of small hydrophobic molecules. Finally, the dye functionalized PMO nanoparticles show low cytotoxicity and excellent cell permeability, which offers great potential for biomedical applications.
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Affiliation(s)
- Buyuan Guan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
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567
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Manganese oxide-based multifunctionalized mesoporous silica nanoparticles for pH-responsive MRI, ultrasonography and circumvention of MDR in cancer cells. Biomaterials 2012; 33:7126-37. [DOI: 10.1016/j.biomaterials.2012.06.059] [Citation(s) in RCA: 235] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 06/22/2012] [Indexed: 01/25/2023]
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568
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Chen QY, Tao GP, Liu YQ, Yang X. Synthesis, characterization, cell imaging and anti-tumor activity of multifunctional nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:284-288. [PMID: 22698845 DOI: 10.1016/j.saa.2012.05.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 04/26/2012] [Accepted: 05/03/2012] [Indexed: 06/01/2023]
Abstract
Most anticancer complexes are unable to differentiate between diseased and healthy cells, systemic toxicity and undesired side effects can result. In the current study, a PEG and RGD peptides functionalized fluorescent dye Rhodamine B isothiocyanate (RBITC) doped magnetic silica nanoparticle (MnFe(3)O(4)@SiO(2)-PEG-RGD), carrying a anticancer superparamagnetic Mn(II) complex, was synthesized and characterized using spectroscopic methods. The multifunctional nanoparticles (MnFe(3)O(4)@SiO(2)-PEG-RGD) can image HepG-2 cells and differentiate between HepG-2 and WRL-68 cells based on T(1) MR imaging technology. The in vitro fluorescence image and inhibition assay on the proliferation of HeLa cells indicate that MnFe(3)O(4)@SiO(2)-PEG-RGD nanoparticles can effectively reach the tumor site, be internalized by endocytosis and then retain in cancer cells due to the retention effect of nanoparticles. This study demonstrated that a PEG and RGD peptides functionalized silica nanoparticle was a good carrier for the anticancer complexes, and the anticancer complexes loaded multifunctional nanoparticles could be developed as special agents in monitoring therapy of cancer.
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Affiliation(s)
- Qiu-Yun Chen
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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569
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Recent advances in the rational design of silica-based nanoparticles for gene therapy. Ther Deliv 2012. [DOI: 10.4155/tde.12.98] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Gene therapy has attracted much attention in modern society and provides a promising approach for treating genetic disorders, diseases and cancers. Safe and effective vectors are vital tools to deliver genetic molecules to cells. This review summarizes recent advances in the rational design of silica-based nanoparticles and their applications in gene therapy. An overview of different types of genetic agents available for gene therapy is provided. The engineering of various silica nanoparticles is described, which can be used as versatile complexation tools for genetic agents and advanced gene therapy. Several challenges are raised and future research directions in the area of gene therapy using silica-based nanoparticles are proposed.
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570
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Li C, Liu J, Alonso S, Li F, Zhang Y. Upconversion nanoparticles for sensitive and in-depth detection of Cu2+ ions. NANOSCALE 2012; 4:6065-71. [PMID: 22930418 DOI: 10.1039/c2nr31570j] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Detection of Cu(2+) ions and study of their subcellular distribution in physiological processes are of considerable significance because of their potential environmental and biological applications. Some fluorescence based sensors have been developed for selective detection of Cu(2+) ions, based on organic fluorescent probes that specifically bind to Cu(2+) ions. However, these sensors are not suitable for detection in biological samples due to the short penetration depth of UV/visible light used to excite the fluorescent probes. The use of near-infrared (NIR) light can afford penetration depths of an order of magnitude greater than that of visible light, however, a material that can convert NIR light to visible light is required. A facile method has been developed for in-depth detection of Cu(2+) ions based on fluorescence upconversion. A mesoporous silica shell is coated on upconversion nanoparticles (UCNPs) and a Cu(2+) ion sensitive fluorescent probe, rhodamine B hydrazide, is incorporated into the mesoporous silica. Upon excitation by a NIR light, the UCNPs emit visible light to excite the Cu(2+)-sensitive fluorescent probe. Because of the unique optical properties of UCNPs and their ability to convert NIR light to visible light, this is a feasible method for sensitive and in-depth detection of Cu(2+) ions in a complex biological or environmental sample due to the low autofluorescence and the high penetration depth of NIR light.
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Affiliation(s)
- Chunxia Li
- Department of Bioengineering, Faculty of Engineering, National University of Singapore, Singapore 117574
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571
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Preconcentration of Pb2+ by iron oxide/amino-functionalized silica core–shell magnetic nanoparticles as a novel solid-phase extraction adsorbent and its determination by flame atomic absorption spectrometry. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2012. [DOI: 10.1007/s13738-012-0162-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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572
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Li D, Tang J, Wei C, Guo J, Wang S, Chaudhary D, Wang C. Doxorubicin-conjugated mesoporous magnetic colloidal nanocrystal clusters stabilized by polysaccharide as a smart anticancer drug vehicle. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:2690-2697. [PMID: 22674615 DOI: 10.1002/smll.201200272] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Indexed: 06/01/2023]
Abstract
Fabrication of magnetic nanocarriers that demonstrate enhanced biocompatibility and excellent colloidal stability is critical for the application of magnetic-motored drug delivery, and it remains a challenge. Herein, a novel approach to synthesize mesoporous magnetic colloidal nanocrystal clusters (MMCNCs) that are stabilized by agarose is described; these clusters demonstrate high magnetization, large surface area and pore volume, excellent colloidal stability, enhanced biocompatibility, and acid degradability. The hydroxyl groups of agarose, which cover the surface of the magnetic nanocrystals, are modified with vinyl groups, followed by click reaction with mercaptoacetyl hydrazine to form the terminal hydrazide (-CONHNH(2)). The anticancer agent doxorubicin (DOX) is then conjugated to MMCNCs through a hydrazone bond. The resulting hydrazone is acid cleavable, thereby providing a pH-sensitive drug release capability. This novel carrier provides an important step towards the construction of a new family of magnetic-motored drug-delivery systems. The experimental results show that the release rate of DOX from the DOX-conjugated MMCNCs (MMCNCs-DOX) is dramatically improved at low pH (tumor cell: pH 4-5 in the late stage of endolysosome and pH 5-6 from the early to late endosome), while almost no DOX is released at neutral pH (blood plasma). The cell cytotoxicity of the MMCNCs-DOX measured by MTT assay exhibits a comparable antitumor efficacy but lower cytotoxicity for normal cell lines, when measured against the free drug, thus achieving the aim of reducing side effects to normal tissues associated with controlled drug release.
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Affiliation(s)
- Dian Li
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, PR China
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573
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Some S, Ho SM, Dua P, Hwang E, Shin YH, Yoo H, Kang JS, Lee DK, Lee H. Dual functions of highly potent graphene derivative-poly-L-lysine composites to inhibit bacteria and support human cells. ACS NANO 2012; 6:7151-61. [PMID: 22845739 DOI: 10.1021/nn302215y] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Dual-function poly(L-lysine) (PLL) composites that function as antibacterial agents and promote the growth of human cell culture have been sought by researchers for a long period. In this paper, we report the preparation of new graphene derivative-PLL composites via electrostatic interactions and covalent bonding between graphene derivatives and PLL. The resulting composites were characterized by infrared spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. The novel dual function of PLL composites, specifically antibacterial activity and biocompatibility with human cells [human adipose-derived stem cells and non-small-cell lung carcinoma cells (A549)], was carefully investigated. Graphene-DS-PLL composites composed of 4-carboxylic acid benzene diazonium salt (DS) generated more anionic carboxylic acid groups to bind to cationic PLLs, forming the most potent antibacterial agent among PLL and PLL composites with high biocompatibility with human cell culture. This dual functionality can be used to inhibit bacterial growth while enhancing human cell growth.
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Affiliation(s)
- Surajit Some
- National Creative Research Initiative, Center for Smart Molecular Memory, Department of Chemistry, Sungkyunkwan University, 300 Cheoncheon-Dong, Jangan-Gu, Suwon, Gyeonggi-Do 440-746, Republic of Korea
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574
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Wang S, Kim G, Lee YEK, Hah HJ, Ethirajan M, Pandey RK, Kopelman R. Multifunctional biodegradable polyacrylamide nanocarriers for cancer theranostics--a "see and treat" strategy. ACS NANO 2012; 6:6843-51. [PMID: 22702416 PMCID: PMC3429656 DOI: 10.1021/nn301633m] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We describe here the development of multifunctional nanocarriers, based on amine-functionalized biodegradable polyacrylamide nanoparticles (NPs), for cancer theranostics, including active tumor targeting, fluorescence imaging, and photodynamic therapy. The structural design involves adding primary amino groups and biodegradable cross-linkers during the NP polymerization, while incorporating photodynamic and fluorescent imaging agents into the NP matrix, and conjugating PEG and tumor-targeting ligands onto the surface of the NPs. The as-synthesized NPs are spherical, with an average diameter of 44 nm. An accelerated biodegradation study, using sodium hydroxide or porcine liver esterase, indicated a hydrogel polymer matrix chain collapse within several days. By using gel permeation chromatography, small molecules were detected, after the degradation. In vitro targeting studies on human breast cancer cells indicate that the targeted NPs can be transported efficiently into tumor cells. Incubating the multifunctional nanocarriers into cancer cells enabled strong fluorescence imaging. Irradiation of the photosensitizing drug, incorporated within the NPs, with light of a suitable wavelength, causes significant but selective damage to the impregnated tumor cells, but only inside the illuminated areas. Overall, the potential of polymeric-based NPs as biodegradable, multifunctional nanocarriers, for cancer theranostics, is demonstrated here.
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Affiliation(s)
- Shouyan Wang
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109
| | - Gwangseong Kim
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109
| | - Yong-Eun Koo Lee
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109
| | - Hoe Jin Hah
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109
| | | | | | - Raoul Kopelman
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109
- Corresponding author,
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575
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Zhang L, Wang T, Yang L, Liu C, Wang C, Liu H, Wang YA, Su Z. General Route to Multifunctional Uniform Yolk/Mesoporous Silica Shell Nanocapsules: A Platform for Simultaneous Cancer-Targeted Imaging and Magnetically Guided Drug Delivery. Chemistry 2012; 18:12512-21. [DOI: 10.1002/chem.201200030] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 03/06/2012] [Indexed: 12/17/2022]
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576
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Development of mesoporous silica nanomaterials as a vehicle for anticancer drug delivery. Ther Deliv 2012; 3:389-404. [PMID: 22506096 DOI: 10.4155/tde.12.9] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The development of delivery vehicles that would carry therapeutic agents selectively to cancer cells has become an important focus in biomedical research. Nanoparticles have received much attention because the advances made in this field have resulted in multiple biocompatible materials. In particular, mesoporous silica nanoparticles (MSNs) offer a solid framework with porous structure and high surface area that allows for the attachment of different functional groups. In this article we discuss the different surface modifications made to MSNs that have allowed for the construction of targeted nanoparticles to enhance accumulation and uptake in target sites, the incorporation of nanomachines for controlled cargo release and the combination with superparamagnetic metals for MRI cell labeling. We also discuss biocompatibility, biodistribution and drug-delivery efficacy of MSNs. Finally, we mention the construction of multifunctional nanoparticles that combine all of the previously examined nanoparticle modifications.
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577
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Jang ES. Preparation of Fe3O4/SiO2Core/Shell Nanoparticles with Ultrathin Silica Layer. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2012. [DOI: 10.5012/jkcs.2012.56.4.478] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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578
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Pack CG, Song MR, Tae EL, Hiroshima M, Byun KH, Kim JS, Sako Y. Microenvironments and different nanoparticle dynamics in living cells revealed by a standard nanoparticle. J Control Release 2012; 163:315-21. [PMID: 22922061 DOI: 10.1016/j.jconrel.2012.07.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 06/29/2012] [Accepted: 07/30/2012] [Indexed: 01/26/2023]
Abstract
For quantitative analysis of nanoparticle diffusions and submicro-environments in living cells, use of newly synthesized silica-based fluorescent nanoparticle (Si-FNP) as a standard nanoprobe is successfully demonstrated. The appropriate characteristics of a standard probe were fully analyzed in vitro by single molecule detection, transmission electron microscopy, and dynamic light scattering. Using fluorescence correlation analysis in single living cells, we quantitatively compared the diffusional properties of the standard Si-FNP with a diameter of 50 nm, peptide coated Si-FNP, streptavidin coated Qdot, and GFP molecule which have different sizes and surface properties. The result demonstrates that the standard Si-FNP without coat is minimally trapped in the vesicles in the process of cellular endocytosis. Interestingly, a large proportion of Si-FNP introduced into the cells by electroporation diffuses freely in the cells during a cell cycle suggesting free diffusing NPs are hardly trapped in the vesicles. The simple but highly sensitive method will provide insight into strategies to understanding the hydrodynamic process of nanoparticle delivery into living cells as well as the cellular microenvironment in the view of submicro-size.
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Affiliation(s)
- Chan Gi Pack
- Cellular Informatics Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan.
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579
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Geng J, Li K, Pu KY, Ding D, Liu B. Conjugated polymer and gold nanoparticle co-loaded PLGA nanocomposites with eccentric internal nanostructure for dual-modal targeted cellular imaging. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:2421-2429. [PMID: 22544732 DOI: 10.1002/smll.201102353] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 02/14/2012] [Indexed: 05/31/2023]
Abstract
Herein is reported the one-step synthesis of an integrated nanocomposite with eccentrically loaded 5 nm gold nanoparticles (Au NPs) and conjugated polymer of poly[9,9-bis(6'-N,N,N-trimethylammonium)hexyl)fluorenyldivinylene-alt-4,7-(2,1,3,- benzothiadiazole) dibromide] (PFVBT). The nanocomposite is generated with surface-functionalized folic acid groups due to the matrix polymer of PLGA-PEG(2000) -folate used for encapsulation. The nanocomposite shows far-red fluorescence from PFVBT and scattering signal from Au NPs. Although Au NPs have been widely reported to quench the fluorescence of conjugated polymers, the PFVBT fluorescence is well maintained in the nanocomposite due to the eccentric location of Au NPs. The folic acid groups at the nanocomposite surface favor its cellular uptake by MCF-7 breast cancer cells, which have overexpressed folate receptors on the cell membranes. In conjugation with its low cytotoxicity, the folic-acid-functionalized nanocomposite has been successfully utilized for fluorescence and dark-field dual-modal targeted cellular imaging.
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Affiliation(s)
- Junlong Geng
- Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, National University of Singapore, 117576, Singapore
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580
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Yang Y, Liu X, Li X, Zhao J, Bai S, Liu J, Yang Q. A Yolk-Shell Nanoreactor with a Basic Core and an Acidic Shell for Cascade Reactions. Angew Chem Int Ed Engl 2012; 51:9164-8. [DOI: 10.1002/anie.201204829] [Citation(s) in RCA: 254] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Indexed: 11/11/2022]
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581
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Yang Y, Liu X, Li X, Zhao J, Bai S, Liu J, Yang Q. A Yolk-Shell Nanoreactor with a Basic Core and an Acidic Shell for Cascade Reactions. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204829] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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582
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583
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Sailor MJ, Park JH. Hybrid nanoparticles for detection and treatment of cancer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:3779-802. [PMID: 22610698 PMCID: PMC3517011 DOI: 10.1002/adma.201200653] [Citation(s) in RCA: 301] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 04/05/2012] [Indexed: 05/04/2023]
Abstract
There is currently considerable effort to incorporate both diagnostic and therapeutic functions into a single nanoscale system for the more effective treatment of cancer. Nanoparticles have great potential to achieve such dual functions, particularly if more than one type of nanostructure can be incorporated in a nanoassembly, referred to in this review as a hybrid nanoparticle. Here we review recent developments in the synthesis and evaluation of such hybrid nanoparticles based on two design strategies (barge vs. tanker), in which liposomal, micellar, porous silica, polymeric, viral, noble metal, and nanotube systems are incorporated either within (barge) or at the surface of (tanker) a nanoparticle. We highlight the design factors that should be considered to obtain effective nanodevices for cancer detection and treatment.
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Affiliation(s)
- Michael J Sailor
- Materials Science and Engineering Program, Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman, La Jolla, CA 92093, USA.
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584
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Simultaneous nuclear imaging and intranuclear drug delivery by nuclear-targeted multifunctional upconversion nanoprobes. Biomaterials 2012; 33:7282-90. [PMID: 22796158 DOI: 10.1016/j.biomaterials.2012.06.035] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Accepted: 06/22/2012] [Indexed: 11/23/2022]
Abstract
Nuclear-targeted therapy by delivering anticancer drug directly into cancer cell nuclei can elicit synergistic therapeutic effects and kill these cancer cells with much enhanced efficiencies. Besides nuclear targeting, another difficulty in nuclear-targeted therapy is how to achieve real-time monitoring of the therapy process simultaneously. In this article we report on the development of multifunctional upconversion nanoparticles (UCNPs) which were able to target cancer cell nuclei, and thus deliver the anticancer drug directly to the nuclear region and simultaneously image cell nucleus by magnetic resonance (MR)/upconversion fluorescent for real-time guidance of their therapeutic action simultaneously. The Er/Yb-doped NaYF(4) core and NaGdF(4) shell endow the core/shell structured UCNPs with enhanced upconversion fluorescent imaging and more sensitive T(1)-MR imaging performances, and the surface conjugation of TAT peptide served as a key role in the nuclear targeting and nuclear transport process. This multifunctional UCNPs-based nano-theranostic was used to improve the efficacy of DOX in Hela humor tumor models, by direct DOX delivery to the nucleus under the synchronous monitoring of the nano-theranostics. Further development of this technology may provide more exciting opportunities in treating cancer disease by nuclear-targeted therapy.
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585
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Li W, Yang J, Wu Z, Wang J, Li B, Feng S, Deng Y, Zhang F, Zhao D. A Versatile Kinetics-Controlled Coating Method To Construct Uniform Porous TiO2 Shells for Multifunctional Core–Shell Structures. J Am Chem Soc 2012; 134:11864-7. [DOI: 10.1021/ja3037146] [Citation(s) in RCA: 367] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Wei Li
- Department
of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, and Laboratory of Advanced
Materials, Fudan University, Shanghai 200433,
P. R. China
| | - Jianping Yang
- Department
of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, and Laboratory of Advanced
Materials, Fudan University, Shanghai 200433,
P. R. China
| | - Zhangxiong Wu
- Department
of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, and Laboratory of Advanced
Materials, Fudan University, Shanghai 200433,
P. R. China
| | - Jinxiu Wang
- Department
of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, and Laboratory of Advanced
Materials, Fudan University, Shanghai 200433,
P. R. China
| | - Bin Li
- Department
of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, and Laboratory of Advanced
Materials, Fudan University, Shanghai 200433,
P. R. China
| | - Shanshan Feng
- Department
of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, and Laboratory of Advanced
Materials, Fudan University, Shanghai 200433,
P. R. China
| | - Yonghui Deng
- Department
of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, and Laboratory of Advanced
Materials, Fudan University, Shanghai 200433,
P. R. China
| | - Fan Zhang
- Department
of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, and Laboratory of Advanced
Materials, Fudan University, Shanghai 200433,
P. R. China
| | - Dongyuan Zhao
- Department
of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, and Laboratory of Advanced
Materials, Fudan University, Shanghai 200433,
P. R. China
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586
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Liu Y, Ai K, Liu J, Yuan Q, He Y, Lu L. Hybrid BaYbF(5) nanoparticles: novel binary contrast agent for high-resolution in vivo X-ray computed tomography angiography. Adv Healthc Mater 2012. [PMID: 23184777 DOI: 10.1002/adhm.201200028] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A novel CT contrast agent denoted as BaYbF(5) @SiO(2) @PEG is presented. The as-prepared nanoparticles exhibit significantly enhanced contrast efficacy relative to clinical iodinated agents and maintain higher X-ray attenuation at different voltages, suitable for diagnostic imaging of various patients. Prolonged circulation time in vivo and low toxicity mean the nanoparticles perform excellently in in-vivo X-ray CT angiography.
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Affiliation(s)
- Yanlan Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
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587
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Duong JT, Bailey MJ, Pick TE, McBride PM, Rosen EL, Buonsanti R, Milliron DJ, Helms BA. Efficient polymer passivation of ligand-stripped nanocrystal surfaces. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26178] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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588
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Xing R, Lin H, Jiang P, Qu F. Biofunctional mesoporous silica nanoparticles for magnetically oriented target and pH-responsive controlled release of ibuprofen. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.03.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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589
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Lin CH, Cheng SH, Liao WN, Wei PR, Sung PJ, Weng CF, Lee CH. Mesoporous silica nanoparticles for the improved anticancer efficacy of cis-platin. Int J Pharm 2012; 429:138-47. [DOI: 10.1016/j.ijpharm.2012.03.026] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 02/13/2012] [Accepted: 03/15/2012] [Indexed: 01/23/2023]
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590
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Lu D, Lei J, Wang L, Zhang J. Multifluorescently Traceable Nanoparticle by a Single-Wavelength Excitation with Color-Related Drug Release Performance. J Am Chem Soc 2012; 134:8746-9. [DOI: 10.1021/ja301691j] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Deli Lu
- Key Lab for Advanced Materials and Institute of Fine
Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Juying Lei
- Key Lab for Advanced Materials and Institute of Fine
Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Lingzhi Wang
- Key Lab for Advanced Materials and Institute of Fine
Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Jinlong Zhang
- Key Lab for Advanced Materials and Institute of Fine
Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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591
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Chen AZ, Lin XF, Wang SB, Li L, Liu YG, Ye L, Wang GY. Biological evaluation of Fe₃O₄-poly(L-lactide)-poly(ethylene glycol)-poly(L-lactide) magnetic microspheres prepared in supercritical CO₂. Toxicol Lett 2012; 212:75-82. [PMID: 22609093 DOI: 10.1016/j.toxlet.2012.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 05/06/2012] [Accepted: 05/08/2012] [Indexed: 01/11/2023]
Abstract
The biocompatibility of Fe₃O₄-poly(L-lactide)-poly(ethylene glycol)-poly(L-lactide) magnetic microspheres (Fe₃O₄-PLLA-PEG-PLLA MMPs) prepared in a process of suspension-enhanced dispersion by supercritical CO₂ (SpEDS) was evaluated at various levels: cellular, molecular, and integrated. At the cellular level, the investigations of cytotoxicity and intracellular reactive oxygen species (ROS) generation indicate that the polymer-coated MMPs (2.0 mg/mL) had a higher toxicity than uncoated Fe₃O₄ nanoparticles, which led to about 20% loss of cell viability and an increase (0.2 fold) in ROS generation; the differences were not statistically significant (p > 0.05). However, an opposite phenomenon was observed in tests of hemolysis, which showed that the MMPs displayed the weakest hemolytic activity, namely only about 6% at the highest concentration (20 mg/mL). This phenomenon reveals that polymer-coated MMPs created less toxicity in red blood cells than uncoated Fe₃O₄ nanoparticles. At the molecular level, the MMPs were shown to be less genotoxic than Fe₃O₄ nanoparticles by measuring the micronucleus (MN) frequency in CHO-K1 cells. Furthermore, the mRNA expression of pro-inflammatory cytokines demonstrates that polymer-coated MMPs elicited a less intense secretion of pro-inflammatory cytokines than uncoated Fe₃O₄ nanoparticles. Acute toxicity tests of MMPs show quite a low toxicity, with an LD₅₀ > 1575.00 mg/kg. The evidence of low toxicity presented in the results indicates that the Fe₃O₄-PLLA-PEG-PLLA MMPs from the SpEDS process have great potential for use in biomedical applications.
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Affiliation(s)
- Ai-Zheng Chen
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China.
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592
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Jang ES, Shin JH, Ren G, Park MJ, Cheng K, Chen X, Wu JC, Sunwoo JB, Cheng Z. The manipulation of natural killer cells to target tumor sites using magnetic nanoparticles. Biomaterials 2012; 33:5584-92. [PMID: 22575830 DOI: 10.1016/j.biomaterials.2012.04.041] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Accepted: 04/14/2012] [Indexed: 02/02/2023]
Abstract
The present work demonstrates that Cy5.5 conjugated Fe(3)O(4)/SiO(2) core/shell nanoparticles could allow us to control movement of human natural killer cells (NK-92MI) by an external magnetic field. Required concentration of the nanoparticles for the cell manipulation is as low as ~20 μg Fe/mL. However, the relative ratio of the nanoparticles loaded NK-92MI cells infiltrated into the target tumor site is enhanced by 17-fold by applying magnetic field and their killing activity is still maintained as same as the NK-92MI cells without the nanoparticles. This approach allows us to open alternative clinical treatment with reduced toxicity of the nanoparticles and enhanced infiltration of immunology to the target site.
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Affiliation(s)
- Eue-Soon Jang
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Department of Radiology, Stanford University, 1201 Welch Rd, Stanford, CA 94305, USA
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593
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Zhao Y, Lin LN, Lu Y, Gao HL, Chen SF, Yang P, Yu SH. Synthesis of tunable theranostic Fe3O4 @mesoporous silica nanospheres for biomedical applications. Adv Healthc Mater 2012. [PMID: 23184749 DOI: 10.1002/adhm.201200005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yang Zhao
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale Department of Chemistry, the National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, PR China
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594
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pH-responsive magnetic mesoporous silica nanospheres for magnetic resonance imaging and drug delivery. REACT FUNCT POLYM 2012. [DOI: 10.1016/j.reactfunctpolym.2012.03.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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595
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Wang Y, He J, Chen J, Ren L, Jiang B, Zhao J. Synthesis of monodisperse, hierarchically mesoporous, silica microspheres embedded with magnetic nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2012; 4:2735-42. [PMID: 22540143 DOI: 10.1021/am300373y] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
We report a preparation method for the synthesis of monodisperse magnetic polymer/silica hybrid microspheres using polymer microspheres incorporated with magnetic nanoparticles as a novel template. Monodisperse, hierarchically mesoporous, silica microspheres embedded with magnetic nanoparticles were successfully fabricated after the calcination of the hybrid microspheres. The magnetic nanoparticles were encapsulated in silica and distributed over the whole area of the porous microspheres without leakage. The resulting inorganic materials possess highly useful properties such as high magnetic nanoparticle loading, high surface area, and large pore volumes. The hierarchically mesoporous magnetic silica microspheres resulted in a high bovine serum albumin (BSA) protein adsorption capacity (260 mg/g) and a fast adsorption rate (reaching equilibrium with 8 h).
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Affiliation(s)
- Yong Wang
- Nano-Micro Materials Research Center, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
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596
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Rosenholm JM, Mamaeva V, Sahlgren C, Lindén M. Nanoparticles in targeted cancer therapy: mesoporous silica nanoparticles entering preclinical development stage. Nanomedicine (Lond) 2012; 7:111-20. [PMID: 22191780 DOI: 10.2217/nnm.11.166] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Nanotechnology may help overcome persisting limitations of current cancer treatment and thus contribute to the creation of more effective, safer and more affordable therapies. While some nanotechnology-based drug delivery systems are already being marketed and others are in clinical trial, most still remain in the preclinical development stage. Mesoporous silica nanoparticles have been highlighted as an interesting drug delivery platform, due to their flexibility and high drug load potential. Although numerous reports demonstrate sophisticated drug delivery mechanisms in vitro, the therapeutic benefit of these systems for in vivo applications have been under continuous debate. This has been due to nontranslatable conditions used in the in vitro studies, as well as contradictory conclusions drawn from preclinical (in vivo) studies. However, recent studies have indicated that the encouraging cellular studies could in fact be repeated also in vivo. Here, we report on these recent advances regarding therapeutic efficacy, targeting and safety issues related to the application of mesoporous silica nanoparticles in cancer therapy.
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Affiliation(s)
- Jessica M Rosenholm
- Center for Functional Materials, Laboratory for Physical Chemistry, Department of Natural Sciences, Åbo Akademi University, Porthansgatan 3-5, FI-20500, Turku, Finland
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597
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Colombo M, Carregal-Romero S, Casula MF, Gutiérrez L, Morales MP, Böhm IB, Heverhagen JT, Prosperi D, Parak WJ. Biological applications of magnetic nanoparticles. Chem Soc Rev 2012; 41:4306-34. [PMID: 22481569 DOI: 10.1039/c2cs15337h] [Citation(s) in RCA: 701] [Impact Index Per Article: 58.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this review an overview about biological applications of magnetic colloidal nanoparticles will be given, which comprises their synthesis, characterization, and in vitro and in vivo applications. The potential future role of magnetic nanoparticles compared to other functional nanoparticles will be discussed by highlighting the possibility of integration with other nanostructures and with existing biotechnology as well as by pointing out the specific properties of magnetic colloids. Current limitations in the fabrication process and issues related with the outcome of the particles in the body will be also pointed out in order to address the remaining challenges for an extended application of magnetic nanoparticles in medicine.
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Affiliation(s)
- Miriam Colombo
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Milan, Italy
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598
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Chang B, Zhang X, Guo J, Sun Y, Tang H, Ren Q, Yang W. General one-pot strategy to prepare multifunctional nanocomposites with hydrophilic colloidal nanoparticles core/mesoporous silica shell structure. J Colloid Interface Sci 2012; 377:64-75. [PMID: 22520713 DOI: 10.1016/j.jcis.2012.03.082] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 02/20/2012] [Accepted: 03/28/2012] [Indexed: 12/19/2022]
Abstract
A general and facile strategy was developed to coat hydrophilic inorganic nanoparticles directly with mesoporous silica nanoparticles (MSNs). The cationic surfactant of cetyltrimethylammonium bromide (CTAB) was adsorbed to various negatively charged CdTe quantum dots, Fe(3)O(4) nanocrystals or Au nanoparticles, introducing the bilayer of CTAB overcoating with positive charge. The subsequent sol-gel reaction of TEOS with the basic catalyst resulted in uniform nanocomposites. The concentration of CTAB and NH(4)OH in the recipe strongly influenced the number of inorganic nanoparticles in the nanocomposites and the homogeneity of MSNs shell. One dimensional Au nanorods and larger size of solid SiO(2) nanoparticles were also able to coat with MSNs using a similar synthetic procedure. The proposed method was greatly simplified without the help of any mediators or silane coupling agents and excellent mesostructural performance was readily achieved. Compared to the methods known from the literatures for the coating of hydrophobic nanoparticles, this efficient way is especially useful for trapping different hydrophilic nanoparticles with arbitrary sizes and shapes into MSNs. These highly versatile multifunctional nanocomposites, together with the pH-responsible drug release behaviors, non-toxicity to normal cells and ease of uptake into cancer cells, are expected to be utilized as drug delivery system for simultaneous imaging and therapeutic applications.
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Affiliation(s)
- Baisong Chang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai 200433, China
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599
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Xuan SH, Lee SF, Lau JTF, Zhu X, Wang YXJ, Wang F, Lai JMY, Sham KWY, Lo PC, Yu JC, Cheng CHK, Leung KCF. Photocytotoxicity and magnetic relaxivity responses of dual-porous γ-Fe2O3@meso-SiO2 microspheres. ACS APPLIED MATERIALS & INTERFACES 2012; 4:2033-2040. [PMID: 22409402 DOI: 10.1021/am300008x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Novel high magnetization microspheres with porous γ-Fe(2)O(3) core and porous SiO(2) shell were synthesized using a templating method, whereas the size of the magnetic core and the thickness of the porous shell can be controlled by tuning the experimental parameters. By way of an example, as-prepared γ-Fe(2)O(3)@meso-SiO(2) microspheres (170 nm) display excellent water-dispersity and show photonic characteristics under externally applied a magnetic field. The magnetic property of the γ-Fe(2)O(3) porous core enables the microspheres to be used as a contrast agent in magnetic resonance imaging with a high r(2) (76.5 s(-1) mM(-1) Fe) relaxivity. The biocompatible composites possess a large BET surface area (222.3 m(2)/g), demonstrating that they can be used as a bifunctional agent for both MRI and drug carrier. Because of the high substrate loading of the magnetic, dual-porous materials, only a low dosage of the substrate will be acquired for potential practical applications. Hydrophobic zinc(II) phthalocyanine (ZnPC) photosensitizing molecules have been encapsulated into the dual-porous microspheres to form γ-Fe(2)O(3)@meso-SiO(2)-ZnPC microspheres. Biosafety, cellular uptake in HT29 cells, and in vitro MRI of these nanoparticles have been demonstrated. Photocytotoxicity (λ > 610 nm) of the HT29 cells uptaken with γ-Fe(2)O(3)@meso-SiO(2)-ZnPC microspheres has been demonstrated for 20 min illumination.
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Affiliation(s)
- Shou-hu Xuan
- Institute of Molecular Functional Materials and Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR
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600
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Development of a pH sensitive nanocarrier using calcium phosphate coated gold nanoparticles as a platform for a potential theranostic material. Macromol Res 2012. [DOI: 10.1007/s13233-012-0061-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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