51
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Li F, Yu Z, Zhao L, Xue T. Synthesis and application of homogeneous Fe3O4 core/Au shell nanoparticles with strong SERS effect. RSC Adv 2016. [DOI: 10.1039/c5ra27875a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Magnetic Fe3O4@Au nanoparticles (NPs) were fabricated using a specific strategy for use as a surface-enhanced Raman scattering (SERS) substrate.
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Affiliation(s)
- Fang Li
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Zhifang Yu
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Liyan Zhao
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Tao Xue
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
- Center for Analysis and Tests
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52
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Wang H, Zhou S. Magnetic and fluorescent carbon-based nanohybrids for multi-modal imaging and magnetic field/NIR light responsive drug carriers. Biomater Sci 2016; 4:1062-73. [DOI: 10.1039/c6bm00262e] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
This mini-review summarizes the latest developments and addresses the future perspectives of carbon-based magnetic and fluorescent nanohybrids in the biomedical field.
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Affiliation(s)
- Hui Wang
- Department of Chemistry
- The College of Staten Island
- and The Graduate Center
- The City University of New York
- Staten Island
| | - Shuiqin Zhou
- Department of Chemistry
- The College of Staten Island
- and The Graduate Center
- The City University of New York
- Staten Island
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53
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Li J, Hu Y, Sun W, Luo Y, Shi X, Shen M. Facile preparation of hyaluronic acid-modified Fe3O4@Mn3O4 nanocomposites for targeted T1/T2 dual-mode MR imaging of cancer cells. RSC Adv 2016. [DOI: 10.1039/c6ra05648b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
HA-Modified Fe3O4@Mn3O4 nanocomposites with both r2 and r1 relaxivities can be prepared for T1/T2 dual-mode MR imaging of cancer cells.
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Affiliation(s)
- Jingchao Li
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Yong Hu
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Wenjie Sun
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Yu Luo
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Xiangyang Shi
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Mingwu Shen
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
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54
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Targeted Fe-filled carbon nanotube as a multifunctional contrast agent for thermoacoustic and magnetic resonance imaging of tumor in living mice. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:235-44. [DOI: 10.1016/j.nano.2015.08.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 07/24/2015] [Accepted: 08/30/2015] [Indexed: 12/27/2022]
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55
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Jiang Y, Zhang Q, Liu X, Chen Y, Wang L, Fu J, Duan H, Wang Y, Yang X. Au nanoshell-coated superparamagnetic Fe 3O 4–silica composite nanoparticles with surface-modification of an activatable cell-penetrating peptide for tumor-targeted multimode bioimaging and photothermal therapy. RSC Adv 2016. [DOI: 10.1039/c6ra07708k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The superparamagnetic Fe3O4–silica composite nanoparticles coated with Au nanoshells were prepared and subsequently surface-modified with PEG conjugated ACPP for realizing the tumor site-specific multimode bioimaging and photothermal therapy.
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Affiliation(s)
- Yunfang Jiang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics)
- School of Pharmacy
- Basic Medical Research Center
- Tianjin Medical University
- Tianjin 300070
| | - Qianyu Zhang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics)
- School of Pharmacy
- Basic Medical Research Center
- Tianjin Medical University
- Tianjin 300070
| | - Xinghua Liu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics)
- School of Pharmacy
- Basic Medical Research Center
- Tianjin Medical University
- Tianjin 300070
| | - Yifu Chen
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Li Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics)
- School of Pharmacy
- Basic Medical Research Center
- Tianjin Medical University
- Tianjin 300070
| | - Jingwei Fu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics)
- School of Pharmacy
- Basic Medical Research Center
- Tianjin Medical University
- Tianjin 300070
| | - Hongquan Duan
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics)
- School of Pharmacy
- Basic Medical Research Center
- Tianjin Medical University
- Tianjin 300070
| | - Yinsong Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics)
- School of Pharmacy
- Basic Medical Research Center
- Tianjin Medical University
- Tianjin 300070
| | - Xiaoying Yang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics)
- School of Pharmacy
- Basic Medical Research Center
- Tianjin Medical University
- Tianjin 300070
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56
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Gomez V, Bear JC, McNaughter PD, McGettrick JD, Watson T, Charbonneau C, O'Brien P, Barron AR, Dunnill CW. Bi-phasic titanium dioxide nanoparticles doped with nitrogen and neodymium for enhanced photocatalysis. NANOSCALE 2015; 7:17735-17744. [PMID: 26455738 DOI: 10.1039/c5nr06025g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Bi-phasic or multi-phasic composite nanoparticles for use in photocatalysis have been produced by a new synthetic approach. Sol-gel methods are used to deposit multiple layers of active material onto soluble substrates. In this work, a layer of rutile (TiO2) was deposited onto sodium chloride pellets followed by an annealing step and a layer of anatase. After dissolving the substrate, bi-phasic nanoparticles containing half anatase and half rutile TiO2; with "Janus-like" characteristics are obtained. Nitrogen and neodymium doping of the materials were observed to enhance the photocatalytic properties both under UV and white light irradiation. The unique advantage of this synthetic method is the ability to systematically dope separate sides of the nanoparticles. Nitrogen doping was found to be most effective on the anatase side of the nanoparticle while neodymium was found to be most effective on the rutile side. Rhodamine B dye was effectively photodegraded by co-doped particles under white light.
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Affiliation(s)
- Virginia Gomez
- Energy Safety Research Institute (ESRI), College of Engineering, Swansea University, Bay Campus, Fabian Way Swansea, SA1 8EN, UK.
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57
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Gao D, Zhang P, Liu C, Chen C, Gao G, Wu Y, Sheng Z, Song L, Cai L. Compact chelator-free Ni-integrated CuS nanoparticles with tunable near-infrared absorption and enhanced relaxivity for in vivo dual-modal photoacoustic/MR imaging. NANOSCALE 2015; 7:17631-17636. [PMID: 26457565 DOI: 10.1039/c5nr05237h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A chelator-free doping method is developed for constructing a Ni-integrated CuS nanostructure as a novel PA/MRI contrast agent. It exhibits tunable near-infrared absorption. Moreover, the hybrid nanostructure has demonstrated a dramatically enhanced T1 relaxivity compared with Ni ions. Due to these unique properties, chelator-free nanoparticles have been successfully applied for in vivo PA/MRI dual-modal imaging.
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Affiliation(s)
- Duyang Gao
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory for Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China.
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58
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Abstract
Raman spectroscopy is increasingly investigated for cancer diagnosis. As the potential of the technique is explored and realized, it is slowly making its way into clinics. There are more reports in recent years showing promise that it can help clinicians for cancer diagnosis. However, a number of challenges remain to be overcome, especially in vivo cancer diagnosis. In this article, the recent progress of the technique toward clinical cancer diagnosis is discussed from a critical perspective.
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59
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Acharya A, Rawat K, Bhat KA, Patial V, Padwad YS. A multifunctional magneto-fluorescent nanocomposite for visual recognition of targeted cancer cells. MATERIALS RESEARCH EXPRESS 2015; 2:115401. [DOI: 10.1088/2053-1591/2/11/115401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2024]
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60
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Bai LY, Yang XQ, An J, Zhang L, Zhao K, Qin MY, Fang BY, Li C, Xuan Y, Zhang XS, Zhao YD, Ma ZY. Multifunctional magnetic-hollow gold nanospheres for bimodal cancer cell imaging and photothermal therapy. NANOTECHNOLOGY 2015; 26:315701. [PMID: 26177713 DOI: 10.1088/0957-4484/26/31/315701] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Multifunctional nanocomposites combining imaging and therapeutic functions have great potential for cancer diagnosis and therapy. In this work, we developed a novel theranostic agent based on hollow gold nanospheres (HGNs) and superparamagnetic iron oxide nanoparticles (SPIO). Taking advantage of the excellent magnetic properties of SPIO and strong near-infrared (NIR) absorption property of HGNs, such nanocomposites were applied to targeted magnetic resonance imaging (MRI) and photoacoustic imaging (PAI) of cancer cells. In vitro results demonstrated they displayed significant contrast enhancement for T2-weighted MRI and strong PAI signal enhancement. Simultaneously, the nanocomposites exhibited a high photothermal effect under the irradiation of the near-infrared laser and can be used as efficient photothermal therapy (PTT) agents for selective killing of cancer cells. All these results indicated that such nanocomposites combined with MRI-PAI and PTT functionality can have great potential for effective cancer diagnosis and therapy.
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61
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McNamara K, Tofail SAM. Nanosystems: the use of nanoalloys, metallic, bimetallic, and magnetic nanoparticles in biomedical applications. Phys Chem Chem Phys 2015; 17:27981-95. [PMID: 26024211 DOI: 10.1039/c5cp00831j] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
There is a growing interest in the use of nanosystems such as nanoalloys, bimetallic nanoparticles, metallic nanoparticles and magnetic nanoparticles in biomedical applications. These applications can be as diverse as hyperthermic treatments; targeted drug delivery; bio-imaging; cell labelling and gene delivery. The use of nanoalloys in these applications has received only limited attention due to the fact that there were many unanswered questions and concerns regarding nanoparticles and nanoalloys such as their stability over time, tendency to agglomerate, chemical activity, ease of oxidation, biocompatibility and cytotoxicity. In this chapter we survey current applications and advances in magnetic nanoparticles used in these biomedical applications so as to understand the materials properties that can pave the way for the use of nanoalloys as a potential alternative or improve solutions that are offered by current materials.
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Affiliation(s)
- Karrina McNamara
- Department of Physics & Energy, and Materials and Surface Science Institute, University of Limerick, Limerick, Ireland.
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62
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Jeong CJ, Sharker SM, In I, Park SY. Iron Oxide@PEDOT-Based Recyclable Photothermal Nanoparticles with Poly(vinylpyrrolidone) Sulfobetaines for Rapid and Effective Antibacterial Activity. ACS APPLIED MATERIALS & INTERFACES 2015; 7:9469-78. [PMID: 25905634 DOI: 10.1021/acsami.5b02737] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Growing microbial resistance that renders antibiotic treatment vulnerable has emerged, attracting a great deal of interest in the need to develop alternative antimicrobial treatments. To contribute to this effort, we report magnetic iron oxide (Fe3O4) nanoparticles (NPs) coated with catechol-conjugated poly(vinylpyrrolidone) sulfobetaines (C-PVPS). This negatively charged Fe3O4@C-PVPS is subsequently encapsulated by poly(3,4-ethylenedioxythiophene) (PEDOT) following a layer-by-layer (LBL) self-assembly method. The obtained Fe3O4@C-PVPS:PEDOT nanoparticles appear to be novel NIR-irradiated photothermal agents that can achieve effective bacterial killing and are reusable after isolation of the used particles using external magnetic fields. The recyclable Fe3O4@C-PVPS:PEDOT NPs exhibit a high efficiency in converting photothermal heat for rapid antibacterial effects against Staphylococcus aureus and Escherichia coli. In this study, antibacterial tests for repeated uses maintained almost 100% antibacterial efficiency during three cycles and provided rapid and effective killing of 99% Gram-positive and -negative bacteria within 5 min of near-infrared (NIR) light exposure. The core-shell nanoparticles (Fe3O4@C-PVPS:PEDOT) exhibit the required stability, and their paramagnetic nature means that they rapidly convert photothermal heat sufficient for use as NIR-irradiated antibacterial photothermal sterilizing agents.
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63
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Branca M, Pelletier F, Cottin B, Ciuculescu D, Lin CC, Serra R, Mattei JG, Casanove MJ, Tan R, Respaud M, Amiens C. Design of FeBi nanoparticles for imaging applications. Faraday Discuss 2015; 175:97-111. [PMID: 25271897 DOI: 10.1039/c4fd00105b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variety of imaging technologies are now routinely used in the medical field, their use being continuously enlarged through the development of contrast agents. Recently nanoparticles (NPs) proved efficient to improve imaging in vivo by increasing contrast and targeting capabilities. The current trend is now focused on the development of dual contrast agents combining two or more functionalities on the same NP. Motivated by this new challenge we developed FeBi NPs as new nanomaterials with potential application as a contrast agent for MRI and CT imaging. In addition to the well-known use of iron in the development MRI contrast agents, we chose Bi as a CT imaging agent rather than the more documented gold, because it possesses a larger X-ray attenuation coefficient and is much less expensive. Two sets of NPs, with sizes around 150 nm and 14 nm, were synthesized using organometallic approaches. In both cases, the NPs are spherical, and contain distinct domains of Fe and Bi, with the surface being enriched with Fe, and a hydrophobic coating. This coating differs from one sample to the other: the surfaces of the 150 nm large NPs are coated by amine ligands, while those of the 14 nm large NPs are coated by a mixture of an amine and its hydrochloride salt. Exchange of the surface ligands to afford water soluble NPs has been attempted. We show that only the larger NPs could be functionalized with water soluble ligands, which is in agreement with the lability of their initial surface coating. Colloidal aqueous solutions of FeBi NPs with glycoPEG ligands have been obtained.
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Affiliation(s)
- M Branca
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, F-31077 Toulouse, France.
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64
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WU Y, XU X, LI Q, YANG R, DING H, XIAO Q. Synthesis of bifunctional Gd2O3:Eu3+ nanocrystals and their applications in biomedical imaging. J RARE EARTH 2015. [DOI: 10.1016/s1002-0721(14)60452-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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65
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Sreejith S, Huong TTM, Borah P, Zhao Y. Organic–inorganic nanohybrids for fluorescence, photoacoustic and Raman bioimaging. Sci Bull (Beijing) 2015. [DOI: 10.1007/s11434-015-0765-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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66
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67
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Chen H, Liu F, Lei Z, Ma L, Wang Z. Fe2O3@Au core@shell nanoparticle–graphene nanocomposites as theranostic agents for bioimaging and chemo-photothermal synergistic therapy. RSC Adv 2015. [DOI: 10.1039/c5ra17143a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Graphene-based magnetic and plasmonic nanocomposites (DOX–rGO–Fe2O3@Au NPs) have been prepared for magnetic-field-assisted drug delivery and chemo-photothermal synergistic therapy.
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Affiliation(s)
- Hongda Chen
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Fuyao Liu
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Zhen Lei
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Lina Ma
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Zhenxin Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
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68
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Anisotropic Gold Nanoparticles: Preparation, Properties, and Applications. ANISOTROPIC NANOMATERIALS 2015. [DOI: 10.1007/978-3-319-18293-3_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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69
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Li J, Hu Y, Yang J, Wei P, Sun W, Shen M, Zhang G, Shi X. Hyaluronic acid-modified Fe3O4@Au core/shell nanostars for multimodal imaging and photothermal therapy of tumors. Biomaterials 2015; 38:10-21. [DOI: 10.1016/j.biomaterials.2014.10.065] [Citation(s) in RCA: 289] [Impact Index Per Article: 32.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 10/19/2014] [Indexed: 10/24/2022]
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70
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Wu D, Huang L, Jiang MS, Jiang H. Contrast agents for photoacoustic and thermoacoustic imaging: a review. Int J Mol Sci 2014; 15:23616-39. [PMID: 25530615 PMCID: PMC4284784 DOI: 10.3390/ijms151223616] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 11/18/2014] [Accepted: 11/27/2014] [Indexed: 11/16/2022] Open
Abstract
Photoacoustic imaging (PAI) and thermoacoustic imaging (TAI) are two emerging biomedical imaging techniques that both utilize ultrasonic signals as an information carrier. Unique advantages of PAI and TAI are their abilities to provide high resolution functional information such as hemoglobin and blood oxygenation and tissue dielectric properties relevant to physiology and pathology. These two methods, however, may have a limited detection depth and lack of endogenous contrast. An exogenous contrast agent is often needed to effectively resolve these problems. Such agents are able to greatly enhance the imaging contrast and potentially break through the imaging depth limit. Furthermore, a receptor-targeted contrast agent could trace the molecular and cellular biological processes in tissues. Thus, photoacoustic and thermoacoustic molecular imaging can be outstanding tools for early diagnosis, precise lesion localization, and molecular typing of various diseases. The agents also could be used for therapy in conjugation with drugs or in photothermal therapy, where it functions as an enhancer for the integration of diagnosis and therapy. In this article, we present a detailed review about various exogenous contrast agents for photoacoustic and thermoacoustic molecular imaging. In addition, challenges and future directions of photoacoustic and thermoacoustic molecular imaging in the field of translational medicine are also discussed.
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Affiliation(s)
- Dan Wu
- School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Lin Huang
- School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Max S Jiang
- College of Medicine, University of Central Florida, Orlando, FL 32827, USA.
| | - Huabei Jiang
- Department of Biomedical Engineering, University of Florida, Gainesville, FL 32611, USA.
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71
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Li J, You J, Dai Y, Shi M, Han C, Xu K. Gadolinium oxide nanoparticles and aptamer-functionalized silver nanoclusters-based multimodal molecular imaging nanoprobe for optical/magnetic resonance cancer cell imaging. Anal Chem 2014; 86:11306-11. [PMID: 25338209 DOI: 10.1021/ac503026d] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Multimodal molecular imaging has attracted more and more interest from researchers due to its combination of the strengths of each imaging modality. The development of specific and multifunctional molecular imaging probes is the key for this method. In this study, we fabricated an optical/magnetic resonance (MR) dual-modality molecular imaging nanoprobe, polyethylene glycol-coated ultrasmall gadolinium oxide (PEG-Gd2O3)/aptamer-Ag nanoclusters (NCs), for tracking cancer cells. To achieve this aim, PEG-Gd2O3 nanoparticles (NPs) as magnetic resonance imaging (MRI) contrast agent and aptamer functionalized silver nanoclusters (aptamer-Ag NCs) as fluorescence reporter were first synthesized by a one-pot approach, respectively. They were then conjugated by the covalent coupling reaction between the carboxyl group on the surface of PEG-Gd2O3 NPs and amino group modified on the 5'-end of AS1411 aptamer. With a suitable ratio, the fluorescence intensity of aptamer-Ag NCs and MR signal of PEG-Gd2O3 nanoparticles could both be enhanced after the formation of PEG-Gd2O3/aptamer-Ag NCs nanoprobe, which favored their application for multimodal molecular imaging. With this nanoprobe, MCF-7 tumor cells could be specifically tracked by both fluorescence imaging and magnetic resonance imaging in vitro.
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Affiliation(s)
- Jingjing Li
- Department of Radiology, Affiliated Hospital of Xuzhou Medical College , Xuzhou, Jiangsu 221006, China
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72
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Abstract
Molecular imaging non-invasively visualizes and characterizes the biologic functions and mechanisms in living organisms at a molecular level. In recent years, advances in imaging instruments, imaging probes, assay methods, and quantification techniques have enabled more refined and reliable images for more accurate diagnoses. Multimodal imaging combines two or more imaging modalities into one system to produce details in clinical diagnostic imaging that are more precise than conventional imaging. Multimodal imaging offers complementary advantages: high spatial resolution, soft tissue contrast, and biological information on the molecular level with high sensitivity. However, combining all modalities into a single imaging probe involves problems yet to be solved due to the requirement of high dose contrast agents for a component of imaging modality with low sensitivity. The introduction of targeting moieties into the probes enhances the specific binding of targeted multimodal imaging modalities and selective accumulation of the imaging agents at a disease site to provide more accurate diagnoses. An extensive list of prior reports on the targeted multimodal imaging probes categorized by each modality is presented and discussed. In addition to accurate diagnosis, targeted multimodal imaging agents carrying therapeutic medications make it possible to visualize the theranostic effect and the progress of disease. This will facilitate the development of an imaging-guided therapy, which will widen the application of the targeted multimodal imaging field to experiments in vivo.
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73
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Liang RP, Wang XN, Wang L, Qiu JD. Enantiomeric separation by microchip electrophoresis using bovine serum albumin conjugated magnetic core-shell Fe3 O4 @Au nanocomposites as stationary phase. Electrophoresis 2014; 35:2824-32. [PMID: 25042461 DOI: 10.1002/elps.201400264] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 07/06/2014] [Accepted: 07/10/2014] [Indexed: 11/07/2022]
Abstract
In this work, a novel enantioselective MCE was developed employing BSA-conjugated Fe3 O4 @Au nanoparticles (Fe3 O4 @Au NPs) as stationary phase. Fe3 O4 @Au NPs with high magnetic responsively, excellent solubility, and high dispersibility in water were prepared through a sonochemical synthesis strategy. BSA was then immobilized onto the Fe3 O4 @Au NPs surfaces through the well-developed interaction between Au NPs and amine groups of BSA to form Fe3 O4 @Au NPs-BSA conjugates, which were then locally packed into PDMS microchannels with the help of magnets. The resultant Fe3 O4 @Au NPs-BSA conjugates not only have the magnetism of Fe3 O4 NPs that make them easily manipulated by an external magnetic field, but also have the larger surface and excellent biocompatibility of Au shell, which can incorporate much more biomolecules and well maintain their biological activity. In addition, the successful BSA decorations endowed Fe3 O4 @Au NPs-BSA conjugates with pH-tunable water solubility related to the pI of BSA (pI 4.7) and led to enhanced stability against high ionic strength. Compared with the native PDMS microchannel, the modified surfaces exhibited more stable and suppressed electroosmotic mobility, and less nonspecific adsorption toward analytes. Successful separation of chiral amino acids (tryptophan and threonine) and ofloxacin enantiomers demonstrate that the constructed MCE columns own ideal enantioselectivity. The results are expected to open up a new possibility for high-throughput screening of enantiomers with protein targets as well as a new application of magnetic NPs.
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Affiliation(s)
- Ru-Ping Liang
- Department of Chemistry, Nanchang University, Nanchang, P.R. China
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74
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Jiang R, Li B, Fang C, Wang J. Metal/Semiconductor hybrid nanostructures for plasmon-enhanced applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5274-309. [PMID: 24753398 DOI: 10.1002/adma.201400203] [Citation(s) in RCA: 445] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 03/03/2014] [Indexed: 05/21/2023]
Abstract
Hybrid nanostructures composed of semiconductor and plasmonic metal components are receiving extensive attention. They display extraordinary optical characteristics that are derived from the simultaneous existence and close conjunction of localized surface plasmon resonance and semiconduction, as well as the synergistic interactions between the two components. They have been widely studied for photocatalysis, plasmon-enhanced spectroscopy, biotechnology, and solar cells. In this review, the developments in the field of (plasmonic metal)/semiconductor hybrid nanostructures are comprehensively described. The preparation of the hybrid nanostructures is first presented according to the semiconductor type, as well as the nanostructure morphology. The plasmonic properties and the enabled applications of the hybrid nanostructures are then elucidated. Lastly, possible future research in this burgeoning field is discussed.
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Affiliation(s)
- Ruibin Jiang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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75
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Chatterjee K, Sarkar S, Jagajjanani Rao K, Paria S. Core/shell nanoparticles in biomedical applications. Adv Colloid Interface Sci 2014; 209:8-39. [PMID: 24491963 DOI: 10.1016/j.cis.2013.12.008] [Citation(s) in RCA: 236] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 12/19/2013] [Accepted: 12/19/2013] [Indexed: 12/21/2022]
Abstract
Nanoparticles have several exciting applications in different areas and biomedial field is not an exception of that because of their exciting performance in bioimaging, targeted drug and gene delivery, sensors, and so on. It has been found that among several classes of nanoparticles core/shell is most promising for different biomedical applications because of several advantages over simple nanoparticles. This review highlights the development of core/shell nanoparticles-based biomedical research during approximately past two decades. Applications of different types of core/shell nanoparticles are classified in terms of five major aspects such as bioimaging, biosensor, targeted drug delivery, DNA/RNA interaction, and targeted gene delivery.
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76
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Zhang S, Gong M, Zhang D, Yang H, Gao F, Zou L. Thiol-PEG-carboxyl-stabilized Fe₂O ₃/Au nanoparticles targeted to CD105: synthesis, characterization and application in MR imaging of tumor angiogenesis. Eur J Radiol 2014; 83:1190-1198. [PMID: 24832501 DOI: 10.1016/j.ejrad.2014.03.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/16/2014] [Accepted: 03/21/2014] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To detect tumor angiogenesis in tumor-bearing mice using thiol-PEG-carboxyl-stabilized Fe2O3/Au nanoparticles targeted to CD105 on magnetic resonance imaging (MRI). METHODS Fe2O3/Au nanoparticles (hybrids) were prepared by reducing Au(3+) on the surface of Fe2O3 nanoparticles. Hybrids were stabilized with thiol-PEG-carboxyl via the Au-S covalent bond, and further conjugated with anti-CD105 antibodies through amide linkages. Characteristics of the hybrid-PEG-CD105 nanoparticles were evaluated. Using these nanoparticles, the labeling specificity of human umbilical vein endothelial cells (HUVECs) was evaluated in vitro. MRI T2-weighted images were obtained at different time points after intravenous administration of the hybrid-PEG-CD105 nanoparticles in the tumor-bearing mice. After MR imaging, the breast cancer xenografts were immediately resected for immunohistochemistry staining and Prussian blue staining to measure the tumor microvessel density (MVD) and evaluate the labeling of blood microvessels by the hybrid-PEG-CD105 nanoparticles in vivo. RESULTS The mean diameter of the hybrid-PEG-CD105 nanoparticles was 56.6 ± 8.0 nm, as measured by transmission electron microscopy (TEM). Immune activity of the hybrid-PEG-CD105 nanoparticles was 53% of that of the anti-CD105 antibody, as detected by enzyme-linked immunosorbent assay (ELISA). The specific binding of HUVECs with the hybrid-PEG-CD105 nanoparticles was proved by immunostaining and Prussian blue staining in vitro. For breast cancer xenografts, the combination of the hybrid-PEG-CD105 nanoparticles with blood microvessels was detectable by MRI after 60 min administration of the contrast agent. The T2* relative signal intensity (SIR) was positively correlated with the tumor MVD (R(2)=0.8972). CONCLUSION Anti-CD105 antibody-coupled, thiol-PEG-carboxyl-stabilized core-shell Fe2O3/Au nanoparticles can efficiently target CD105 expressed by HUVECs. Furthermore, the hybrid-PEG-CD105 nanoparticles can be used to detect tumor angiogenesis in vivo.
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Affiliation(s)
- Song Zhang
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Mingfu Gong
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Dong Zhang
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Hua Yang
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Fabao Gao
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Liguang Zou
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
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Li C, Chen T, Ocsoy I, Zhu G, Yasun E, You M, Wu C, Zheng J, Song E, Huang CZ, Tan W. Gold-Coated Fe 3O 4 Nanoroses with Five Unique Functions for Cancer Cell Targeting, Imaging and Therapy. ADVANCED FUNCTIONAL MATERIALS 2014; 24:1772-1780. [PMID: 25530745 PMCID: PMC4266531 DOI: 10.1002/adfm.201301659] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The development of nanomaterials that combine diagnostic and therapeutic functions within a single nanoplatform is extremely important for molecular medicine. Molecular imaging with simultaneous diagnosis and therapy will provide the multimodality needed for accurate diagnosis and targeted therapy. Here, we demonstrate gold-coated iron oxide (Fe3O4@Au) nanoroses with five distinct functions, which integrate aptamer-based targeting, magnetic resonance imaging (MRI), optical imaging, photothermal therapy and chemotherapy into one single probe. The inner Fe3O4 core functions as an MRI agent, while the photothermal effect is achieved through near-infrared absorption by the gold shell, causing a rapid rise in temperature and also resulting in a facilitated release of the anticancer drug doxorubicin carried by the nanoroses. Where the doxorubicin is released is monitored by its fluorescent. Aptamers immobilized on the surfaces of the nanoroses enable efficient and selective drug delivery, imaging and photothermal effect with high specificity. The five-function-embedded nanoroses show great advantages in multimodality.
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Affiliation(s)
- Chunmei Li
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States; Ministry of Education Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, College of Pharmaceutical Science, Southwest University, Chongqing 400715, (P.R. China)
| | - Tao Chen
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States
| | - Ismail Ocsoy
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States
| | - Guizhi Zhu
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States
| | - Emir Yasun
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States
| | - Mingxu You
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States
| | - Cuichen Wu
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States
| | - Jing Zheng
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States; Molecular Sciences and Biomedicine Laboratory, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering and College of Biology, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, China
| | - Erqun Song
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States; Ministry of Education Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, College of Pharmaceutical Science, Southwest University, Chongqing 400715, (P.R. China)
| | - Cheng Zhi Huang
- Ministry of Education Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, College of Pharmaceutical Science, Southwest University, Chongqing 400715, (P.R. China)
| | - Weihong Tan
- Center for Research at Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida, 32611-7200, United States; Molecular Sciences and Biomedicine Laboratory, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering and College of Biology, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, China
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Van Roosbroeck R, Van Roy W, Stakenborg T, Trekker J, D'Hollander A, Dresselaers T, Himmelreich U, Lammertyn J, Lagae L. Synthetic antiferromagnetic nanoparticles as potential contrast agents in MRI. ACS NANO 2014; 8:2269-2278. [PMID: 24483137 DOI: 10.1021/nn406158h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present the top-down synthesis of a novel type of MRI T2 contrast agent with great control over size and shape using a colloidal lithography technique. The resulting synthetic antiferromagnetic nanoparticles (SAF-NPs) yield improved relaxivities compared to superparamagnetic iron oxide alternatives (SPIONs). For T2 weighted imaging, the outer sphere relaxation theory has shown that the sensitivity of a T2 contrast agent is dependent on the particle size with an optimal size that exceeds the superparamagnetic limit of SPIONs. With the use of the interlayer exchange coupling effect, the SAF-NPs presented here do not suffer from this limit. Adjusting the outer sphere relaxation theory for spherical particles to SAF-NPs, we show both theoretically and experimentally that the SAF-NP size can be optimized to reach the r2 maximum. With measured r2 values up to 355 s(-1) mM(-1), our SAF-NPs show better performance than commercial alternatives and are competitive with the state-of-the-art. This performance is confirmed in an in vitro MRI study on SKOV3 cells.
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79
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He X, Liu F, Liu L, Duan T, Zhang H, Wang Z. Lectin-Conjugated Fe2O3@Au Core@Shell Nanoparticles as Dual Mode Contrast Agents for in Vivo Detection of Tumor. Mol Pharm 2014; 11:738-45. [DOI: 10.1021/mp400456j] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Xiuxia He
- School
of Life Science and Technology, Changchun University of Science and Technology, Changchun 130022, P. R. China
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Fuyao Liu
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100039, P. R. China
| | - Liang Liu
- China-Japan
Union Hospital, Jilin University, Changchun 130033, P. R. China
| | - Taicheng Duan
- National Analytical Research Center of Electrochemistry and Spectroscopy, Changchun 130022, P. R. China
| | - Huimao Zhang
- China-Japan
Union Hospital, Jilin University, Changchun 130033, P. R. China
| | - Zhenxin Wang
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
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80
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Shen S, Zhao B, Wang H, Li Z, Qu G, Guo Z, Zhou T, Song W, Wang X, Ruan W. CdTe quantum dots modified polystyrene spheres with Ag nanoparticle caps: Applications both in fluorescence and in SERS. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2013.12.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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81
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Li N, Zhao P, Astruc D. Anisotrope Gold-Nanopartikel: Synthese, Eigenschaften, Anwendungen und Toxizität. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201300441] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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82
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Li N, Zhao P, Astruc D. Anisotropic Gold Nanoparticles: Synthesis, Properties, Applications, and Toxicity. Angew Chem Int Ed Engl 2014; 53:1756-89. [DOI: 10.1002/anie.201300441] [Citation(s) in RCA: 691] [Impact Index Per Article: 69.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/26/2013] [Indexed: 12/26/2022]
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83
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Lu X, Jiang R, Yang M, Fan Q, Hu W, Zhang L, Yang Z, Deng W, Shen Q, Huang Y, Liu X, Huang W. Monodispersed grafted conjugated polyelectrolyte-stabilized magnetic nanoparticles as multifunctional platform for cellular imaging and drug delivery. J Mater Chem B 2014; 2:376-386. [DOI: 10.1039/c3tb20955e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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84
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Mao GY, Yang WJ, Bu FX, Jiang DM, Zhao ZJ, Zhang QH, Fang QC, Jiang JS. One-step hydrothermal synthesis of Fe3O4@C nanoparticles with great performance in biomedicine. J Mater Chem B 2014; 2:4481-4488. [DOI: 10.1039/c4tb00394b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Core@shell structured Fe3O4@C nanoparticles synthesized by one-pot hydrothermal method show good pH-response drug release property and magneto-thermal performance.
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Affiliation(s)
- Gui-Yun Mao
- Department of Physics
- Center for Functional Nanomaterials and Devices
- East China Normal University
- Shanghai 200241, P. R. China
| | - Wen-Jing Yang
- Shanghai Diabetes Institute
- Shanghai Key Laboratory of Diabeties Mellitus
- Department of Endocrinology and Metabolism
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233, P. R. China
| | - Fan-Xing Bu
- Department of Physics
- Center for Functional Nanomaterials and Devices
- East China Normal University
- Shanghai 200241, P. R. China
| | - Dong-Mei Jiang
- Department of Physics
- Center for Functional Nanomaterials and Devices
- East China Normal University
- Shanghai 200241, P. R. China
| | - Zhen-Jie Zhao
- Department of Physics
- Center for Functional Nanomaterials and Devices
- East China Normal University
- Shanghai 200241, P. R. China
| | - Qing-Hong Zhang
- Engineering Research Center of Advanced Glasses Manufacturing Technology
- MOE
- Donghua University
- Shanghai 201620, P. R. China
| | - Qi-Chen Fang
- Shanghai Diabetes Institute
- Shanghai Key Laboratory of Diabeties Mellitus
- Department of Endocrinology and Metabolism
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233, P. R. China
| | - Ji-Sen Jiang
- Department of Physics
- Center for Functional Nanomaterials and Devices
- East China Normal University
- Shanghai 200241, P. R. China
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85
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Li J, Zheng L, Cai H, Sun W, Shen M, Zhang G, Shi X. Facile one-pot synthesis of Fe3O4@Au composite nanoparticles for dual-mode MR/CT imaging applications. ACS APPLIED MATERIALS & INTERFACES 2013; 5:10357-66. [PMID: 24063810 DOI: 10.1021/am4034526] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
A facile one-pot hydrothermal approach to synthesizing Fe3O4@Au composite nanoparticles (CNPs) for dual-mode magnetic resonance (MR) and computed tomography (CT) imaging applications is reported. In this work, polyethyleneimine (PEI) partially modified with poly(ethylene glycol) monomethyl ether (mPEG) was used as a stabilizer to form gold NPs (mPEG-PEI.NH2-Au NPs) with the assistance of sodium borohydride reduction. The mPEG-PEI.NH2-Au NPs were then mixed with iron(II) salt in a basic aqueous solution followed by treatment under an elevated temperature and pressure. This hydrothermal process led to the formation of Fe3O4@Au-mPEG-PEI.NH2 CNPs. The remaining PEI amine groups were finally acetylated to reduce the surface positive charge of the CNPs. The formed Fe3O4@Au-mPEG-PEI.NHAc (Fe3O4@Au) CNPs were characterized via different techniques. The combined in vitro cell viability assay, cell morphology observation, flow cytometry, and hemolysis assay data show that the formed Fe3O4@Au CNPs are noncytotoxic and hemocompatible in the given concentration range. MR and CT imaging data reveal that the formed Fe3O4@Au CNPs have a relatively high r2 relaxivity (146.07 mM(-1) s(-1)) and good X-ray attenuation property, which enables their uses as contrast agents for MR imaging of mouse liver and CT imaging of rat liver and aorta. The Fe3O4@Au CNPs developed via the facile one-pot approach may have promising potential for the dual-mode MR/CT imaging of different biological systems.
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Affiliation(s)
- Jingchao Li
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , Shanghai 201620, P. R. China
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86
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Li WM, Chen SY, Liu DM. In situ doxorubicin-CaP shell formation on amphiphilic gelatin-iron oxide core as a multifunctional drug delivery system with improved cytocompatibility, pH-responsive drug release and MR imaging. Acta Biomater 2013; 9:5360-8. [PMID: 23022876 DOI: 10.1016/j.actbio.2012.09.023] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 09/11/2012] [Accepted: 09/19/2012] [Indexed: 01/18/2023]
Abstract
An amphiphilic gelatin-iron oxide core/calcium phosphate shell (AGIO@CaP-DOX) nanoparticle was successfully synthesized as an efficient anti-cancer drug delivery system, where doxorubicin (DOX) as a model molecule was encapsulated by electrolytic co-deposition during CaP shell formation. The shell of CaP precipitate played a pivotal role, not only in acting as a drug depot, but also in rendering the drug release rate in a highly pH-dependent controlled manner. Together with MR imaging, highly biocompatible drug-carrying CaP shell and efficient cellular internalization, the AGIO@CaP-DOX nanoparticles developed in this study area promising multifunctional nanodevice for nanotherapeutic approaches.
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Affiliation(s)
- W-M Li
- Department of Materials Sciences and Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
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87
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Qu H, Lai Y, Niu D, Sun S. Surface-enhanced Raman scattering from magneto-metal nanoparticle assemblies. Anal Chim Acta 2013; 763:38-42. [DOI: 10.1016/j.aca.2012.12.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 12/05/2012] [Accepted: 12/09/2012] [Indexed: 10/27/2022]
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88
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Zhou YM, Wang HB, Gong M, Sun ZY, Cheng K, Kong XK, Guo Z, Chen QW. Yolk-type Au@Fe3O4@C nanospheres for drug delivery, MRI and two-photon fluorescence imaging. Dalton Trans 2013; 42:9906-13. [DOI: 10.1039/c3dt50789k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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89
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90
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Bogart LK, Taylor A, Cesbron Y, Murray P, Lévy R. Photothermal microscopy of the core of dextran-coated iron oxide nanoparticles during cell uptake. ACS NANO 2012; 6:5961-5971. [PMID: 22659064 DOI: 10.1021/nn300868z] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A detailed understanding of cellular interactions with superparamagnetic iron oxide nanoparticles (SPIONs) is critical when their biomedical applications are considered. We demonstrate how photothermal microscopy can be used to follow the cellular uptake of SPIONs by direct imaging of the iron oxide core. This offers two important advantages when compared with current strategies employed to image magnetic cores: first, it is nondestructive and is therefore suitable for studies of live cells and, second, it offers a higher sensitivity and resolution, thus allowing for the identification of low levels of SPIONs within a precise subcellular location. We have shown that this technique may be applied to the imaging of both cell monolayers and cryosections. In the former we have demonstrated the role of temperature on the rate of endocytosis, while in the latter we have been able to identify cells labeled with SPIONs from a mixed population containing predominantly unlabeled cells. Direct imaging of the SPION core is of particular relevance for research involving clinically approved SPIONs, which do not contain fluorescent tags and therefore cannot be detected via fluorescence microscopy.
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Affiliation(s)
- Lara K Bogart
- Structural and Chemical Biology, Institute of Integrative Biology, University of Liverpool, United Kingdom.
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91
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Ren W, Tian G, Zhou L, Yin W, Yan L, Jin S, Zu Y, Li S, Gu Z, Zhao Y. Lanthanide ion-doped GdPO4 nanorods with dual-modal bio-optical and magnetic resonance imaging properties. NANOSCALE 2012; 4:3754-3760. [PMID: 22622654 DOI: 10.1039/c2nr30683b] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Here, dual-modal bioprobes for combined optical and magnetic resonance (MR) imaging are reported. Gadolinium orthophosphate (GdPO(4)) nanorods co-doped with light-emitting lanthanide ions have been successfully prepared through a hydrothermal method. An efficient downconversion luminescence from Ce/Tb or Eu doped GdPO(4) nanorods and upconversion luminescence from Yb/Er co-doped GdPO(4) nanorods are observed, respectively, which offers the optical modality for the nanoprobes. Notably, we first report the upconversion phenomenon based on the GdPO(4) matrix under 980 nm near infrared irradiation. The possibility of using these nanoprobes with downconversion and upconversion luminescent emissions for optical cell imaging is also demonstrated. Furthermore, these Gd(3+)-containing nanophosphors show good positive signal-enhancement ability when performed under a 4.7 T MR imaging scanner, indicating they have potential as T(1) MR imaging contrast agents. Thus, nanoprobes based on GdPO(4) nanophosphors are shown to provide the dual modality of optical and MR imaging.
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Affiliation(s)
- Wenlu Ren
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, PR China
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92
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Huang G, Si Z, Yang S, Li C, Xing D. Dextran based pH-sensitive near-infrared nanoprobe for in vivo differential-absorption dual-wavelength photoacoustic imaging of tumors. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33990k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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93
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Aboelzahab A, Azad AM, Goel V. Necrosis of Staphylococcus aureus by the Electrospun Fe- and Ag-Doped TiO2 Nanofibers. ISRN ORTHOPEDICS 2012; 2012:763806. [PMID: 24977085 PMCID: PMC4063219 DOI: 10.5402/2012/763806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 07/21/2012] [Indexed: 11/23/2022]
Abstract
Postsurgery infections cause prolonged hospitalization, incurring increased patient and hospital costs, making it increasingly vital to develop an effective solution for the mitigation and elimination of infection buildup at these sites. Incorporation of a bactericidal device at the infection-prone sites provides the capability of attacking bacterial growth even after the patient has left the hospital. Polycrystalline titanium dioxide (TiO2) is photoactive and possesses antibacterial properties that can mitigate the onset of these infections and aid in wound healing. In this work, TiO2 nanofibers were synthesized by electrospinning. Doping with iron as well as with silver (5 wt% and 1 wt%, resp.) was also carried out to increase their effectiveness towards bactericidal properties. The electrospun fibers were processed and tested in the presence of light in the suspensions of methicillin-susceptible Staphylococcus aureus (MSSA) bacteria, which are the leading infection-inducing bacteria among hospital patients. It was found that upon brief activation (cf. 30 s) by an infrared laser source, greater than 90% of the S. aureus was rendered inactive within cf. 10 min. of exposure, thereby showing the potential of titania nanofibers for effective mitigation of infection.
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Affiliation(s)
- Asem Aboelzahab
- Department of Bioengineering, The University of Toledo, Toledo, OH 435606-3390, USA
| | - Abdul-Majeed Azad
- Department of Chemical Engineering, The University of Toledo, Toledo, OH 435606-3390, USA
| | - Vijay Goel
- Department of Bioengineering, The University of Toledo, Toledo, OH 435606-3390, USA ; Department of Orthopedic Surgery, The University of Toledo, Toledo, OH 435606-3390, USA
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