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Sadr SH, Davaran S, Alizadeh E, Salehi R, Ramazani A. PLA-based magnetic nanoparticles armed with thermo/pH responsive polymers for combination cancer chemotherapy. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.03.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Zhang M, Jin X, Gou G. Preparation and characterization of magnetic thermosensitive fluorouracil micelles. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 27:773-91. [PMID: 26948946 DOI: 10.1080/09205063.2016.1162626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
In this study, we synthesized P(NIPAM-co-DMAM)-b-PLA polymers with free radical polymerization and ring-opening addition polymerization, and immediately assembled 'dextran magnetic layered double hydroxide fluorouracil' (DMF) magnetic particles into the core of the amphiphilic polymer micelles with synchronous hydration and dialysis, to generate a magnetic thermosensitive fluorouracil drug delivery system. The basic properties of the micelle particles, such as the core-shell-type structure, size, and zeta potential, were studied with (1)H-NMR, FTIR, TEM, TGA, laser nanoparticle size analysis, and other characterization techniques. The thermosensitivity of the micelles was investigated by measuring parameters such as the lower critical solution temperature (LCST) and the relationship between the particle size variation and temperature. The drug release curves for the micelles at different temperatures were constructed with a dialysis method. The LCST of the triblock polymers was 42 °C. The particle sizes of the blank micelles and DMF-loaded micelles were 493.6 ± 1.8 nm and 464.9 ± 4.1 nm, respectively, at 25 °C. When the temperature was higher than LSCT, a contraction phase change in the micelle structure occurred, a significant characteristic of the core-shell-type structure, and reversible phase transition phenomena. The release behavior of the drug-loaded micelles showed obvious variations with temperature. Therefore, the magnetic thermosensitive fluorouracil drug delivery system has a good magnetic response and excellent temperature controlled release characteristics, so it can be used as a drug delivery system in magnetically and thermally targeted chemotherapy for tumors.
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Affiliation(s)
- Min Zhang
- a Department of Pharmacy, College of Pharmacy , Ningxia Medical University , Yinchuan
| | - Xueqin Jin
- a Department of Pharmacy, College of Pharmacy , Ningxia Medical University , Yinchuan
| | - Guojing Gou
- a Department of Pharmacy, College of Pharmacy , Ningxia Medical University , Yinchuan
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On the Mechanism of Drug Release from Polysaccharide Hydrogels Cross-Linked with Magnetite Nanoparticles by Applying Alternating Magnetic Fields: the Case of DOXO Delivery. Gels 2015; 1:24-43. [PMID: 30674163 PMCID: PMC6318587 DOI: 10.3390/gels1010024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/04/2015] [Accepted: 05/11/2015] [Indexed: 11/18/2022] Open
Abstract
The chemical, biological and physical properties of carboxymethylcellulose (CMC) hydrogels with silanized magnetite (Fe3O4) nanoparticles (NPs) as cross-linker were investigated and compared with the analogous hydrogel obtained by using 1,3-diaminopropane (DAP) as cross-linker. The magnetic hydrogel was characterized from the chemical point of view by FT-IR, whereas the morphology of the hydrogel was investigated by FESEM and STEM. The water uptake and rheological measurements reveal how much the swelling and mechanical properties change when CMC is cross-linked with silanized magnetite NPs instead of with DAP. As far as the biological properties, the hybrid hydrogel neither exerts any adverse effect nor any alteration on the cells. The magnetic hydrogels show magnetic hysteresis at 2.5 K as well as at 300 K. Magnetic measurements show that the saturation magnetization, remanent magnetization and coercive field of the NPs are not influenced significantly by the silanization treatment. The magnetic hydrogel was tested as controlled drug delivery system. The release of DOXO from the hydrogel is significantly enhanced by exposing it to an alternating magnetic field. Under our experimental conditions (2 mT and 40 kHz), no temperature increase of the hydrogel was measured, testifying that the mechanism for the enhancement of drug release under the AMF involves the twisting of the polymeric chains. A static magnetic field (0.5 T) does not influence the drug release from the hydrogel, compared with that without magnetic field.
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Ede SR, Ramadoss A, Nithiyanantham U, Anantharaj S, Kundu S. Bio-molecule Assisted Aggregation of ZnWO4 Nanoparticles (NPs) into Chain-like Assemblies: Material for High Performance Supercapacitor and as Catalyst for Benzyl Alcohol Oxidation. Inorg Chem 2015; 54:3851-63. [DOI: 10.1021/acs.inorgchem.5b00018] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sivasankara Rao Ede
- Electrochemical Materials Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu, India
| | - Ananthakumar Ramadoss
- Nanomaterials
and System Lab, Faculty of Applied Energy System, Science and Engineering
College, Jeju National University, Jeju 690-756, Republic of Korea
| | - U. Nithiyanantham
- Electrochemical Materials Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu, India
| | - S. Anantharaj
- Electrochemical Materials Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu, India
| | - Subrata Kundu
- Electrochemical Materials Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630006, Tamil Nadu, India
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Tsai H, Lu YH, Liao HX, Wu SW, Yu FY, Fuh CB. Detection of rabbit IgG by using functional magnetic particles and an enzyme-conjugated antibody with a homemade magnetic microplate. Chem Cent J 2015; 9:8. [PMID: 25745512 PMCID: PMC4350001 DOI: 10.1186/s13065-015-0088-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 02/06/2015] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The enzyme-linked immunosorbent assay (ELISA) has been used for diagnosing medical and plant pathologies. In addition, it is used for quality-control evaluations in various industries. The ELISA is the simplest method for obtaining excellent results; however, it is time consuming because the immunoreagents interact only on the contact surfaces. Antibody-labeled magnetic particles can be dispersed in a solution to yield a pseudohomogeneous reaction with antigens which improved the efficiency of immunoreaction, and can be easily separated from the unreactive substances by applying a magnetic force. We used a homemade magnetic microplate, functional magnetic particles (MPs) and enzyme-labeled secondary antibody to perform the sandwich ELISA successfully. RESULTS Using antibody-labeled MPs enabled reducing the analysis time to one-third of that required in using a conventional ELISA. The secondary antibody conjugated with horseradish peroxidase (HRP) was affinity-bound to the analyte (IgG in this study). The calibration curve was established according to the measured absorbance of the 3, 3', 5, 5'-tetramethybezidine-HRP reaction products versus the concentrations of standard IgG. The linear range of IgG detection was 114 ng/mL-3.5 ng/mL. The limit of detection (LOD) of IgG was 3.4 ng/mL. The recovery and coefficient of variation were 100% (±7%) and 116% (±4%) for the spiked concentrations of 56.8 ng/mL and 14.2 ng/mL, respectively. CONCLUSION Pseudohomogeneous reactions can be performed using functional MPs and a magnetic microplate. Using antibody-labeled MPs, the analysis time can be reduced to one-third of that required in using a conventional ELISA. The substrate-enzyme reaction products can be easily transferred to another microplate, and their absorbance can be measured without interference by light scattering caused by magnetic microbeads. This method demonstrates great potential for detecting other biomarkers and in biochemical applications. Graphical AbstractA magnetic ELISA with convenient magnetic microplate.
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Affiliation(s)
- Hweiyan Tsai
- School of Medical Applied Chemistry, Chung Shan Medical University, Taichung, 402 Taiwan ; Department of Medical Education, Chung Shan Medical University Hospital, Taichung, 402 Taiwan
| | - Yi-Hsuan Lu
- School of Medical Applied Chemistry, Chung Shan Medical University, Taichung, 402 Taiwan
| | - Huan-Xuan Liao
- School of Medical Applied Chemistry, Chung Shan Medical University, Taichung, 402 Taiwan
| | - Shih-Wei Wu
- School of Biomedical Sciences, Chung Shan Medical University, Taichung, 402 Taiwan
| | - Feng-Yih Yu
- School of Biomedical Sciences, Chung Shan Medical University, Taichung, 402 Taiwan
| | - Chwan Bor Fuh
- Department of Applied Chemistry, National Chi Nan University, Puli, Nantou, 545 Taiwan
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Ma Y, Qiao M, Chen Y, Hou C, Zhang B, Zhang Q. Fabrication of electromagnetic Fe3O4@polyaniline nanofibers with high aspect ratio. RSC Adv 2015. [DOI: 10.1039/c4ra14723e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
High aspect ratio Fe3O4@polyaniline nanofibers prepared show better magnetization saturation and conductivity value compared to Fe3O4@polyaniline microspheres.
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Affiliation(s)
- Yong Ma
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Mingtao Qiao
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Yanhui Chen
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Chunping Hou
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Baoliang Zhang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Qiuyu Zhang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
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Preiss LC, Landfester K, Muñoz-Espí R. Biopolymer colloids for controlling and templating inorganic synthesis. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:2129-2138. [PMID: 25551041 PMCID: PMC4273287 DOI: 10.3762/bjnano.5.222] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 10/29/2014] [Indexed: 05/31/2023]
Abstract
Biopolymers and biopolymer colloids can act as controlling agents and templates not only in many processes in nature, but also in a wide range of synthetic approaches. Inorganic materials can be either synthesized ex situ and later incorporated into a biopolymer structuring matrix or grown in situ in the presence of biopolymers. In this review, we focus mainly on the latter case and distinguish between the following possibilities: (i) biopolymers as controlling agents of nucleation and growth of inorganic materials; (ii) biopolymers as supports, either as molecular supports or as carrier particles acting as cores of core-shell structures; and (iii) so-called "soft templates", which include on one hand stabilized droplets, micelles, and vesicles, and on the other hand continuous scaffolds generated by gelling biopolymers.
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Affiliation(s)
- Laura C Preiss
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Rafael Muñoz-Espí
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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Kumar A, Kumar V. Biotemplated Inorganic Nanostructures: Supramolecular Directed Nanosystems of Semiconductor(s)/Metal(s) Mediated by Nucleic Acids and Their Properties. Chem Rev 2014; 114:7044-78. [DOI: 10.1021/cr4007285] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Anil Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, India
| | - Vinit Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, India
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Pershina AG, Sazonov AE, Filimonov VD. Magnetic nanoparticles–DNA interactions: design and applications of nanobiohybrid systems. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n04abeh004412] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Yen SK, Padmanabhan P, Selvan ST. Multifunctional iron oxide nanoparticles for diagnostics, therapy and macromolecule delivery. Theranostics 2013; 3:986-1003. [PMID: 24396508 PMCID: PMC3881099 DOI: 10.7150/thno.4827] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Accepted: 12/18/2012] [Indexed: 12/20/2022] Open
Abstract
In recent years, multifunctional nanoparticles (NPs) consisting of either metal (e.g. Au), or magnetic NP (e.g. iron oxide) with other fluorescent components such as quantum dots (QDs) or organic dyes have been emerging as versatile candidate systems for cancer diagnosis, therapy, and macromolecule delivery such as micro ribonucleic acid (microRNA). This review intends to highlight the recent advances in the synthesis and application of multifunctional NPs (mainly iron oxide) in theranostics, an area used to combine therapeutics and diagnostics. The recent applications of NPs in miRNA delivery are also reviewed.
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Bhalla N, Bentley PJ, Vize PD, Jacob C. Staging the self-assembly process: inspiration from biological development. ARTIFICIAL LIFE 2013; 20:29-53. [PMID: 23373983 DOI: 10.1162/artl_a_00095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
One of the practical challenges facing the creation of self-assembling systems is being able to exploit a limited set of fixed components and their bonding mechanisms. The method of staging divides the self-assembly process into time intervals, during which components can be added to, or removed from, an environment at each interval. Staging addresses the challenge of using components that lack plasticity by encoding the construction of a target structure in the staging algorithm itself and not exclusively in the design of the components. Previous staging strategies do not consider the interplay between component physical features (morphological information). In this work we use morphological information to stage the self-assembly process, during which components can only be added to their environment at each time interval, to demonstrate our concept. Four experiments are presented, which use heterogeneous, passive, mechanical components that are fabricated using 3D printing. Two orbital shaking environments are used to provide energy to the components and to investigate the role of morphological information with component movement in either two or three spatial dimensions. The benefit of our staging strategy is shown by reducing assembly errors and exploiting bonding mechanisms with rotational properties. As well, a doglike target structure is used to demonstrate in theory how component information used at an earlier time interval can be reused at a later time interval, inspired by the use of a body plan in biological development. We propose that a staged body plan is one method toward scaling self-assembling systems with many interacting components. The experiments and body plan example demonstrate, as proof of concept, that staging enables the self-assembly of more complex morphologies not otherwise possible.
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12
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Kundu S. Formation of self-assembled Ag nanoparticles on DNA chains with enhanced catalytic activity. Phys Chem Chem Phys 2013; 15:14107-19. [DOI: 10.1039/c3cp51890f] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Zinchenko AA. Templating of inorganic nanomaterials by biomacromolecules and their assemblies. POLYMER SCIENCE SERIES C 2012. [DOI: 10.1134/s1811238212070077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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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: 683] [Impact Index Per Article: 56.9] [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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Di HW, Luo YL, Xu F, Chen YS, Nan YF. Fabrication and Caffeine Release from Fe3O4/P(MAA-co-NVP) Magnetic Microspheres with Controllable Core–Shell Architecture. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 22:557-76. [DOI: 10.1163/092050610x487891] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Hong-Wei Di
- a Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Yan-Ling Luo
- b Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Feng Xu
- c Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Yao-Shao Chen
- d Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Yun-Fei Nan
- e Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, P. R. China
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17
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Nelson A, Dai Q. Magnetically Responsive Self-Assembled Composite Materials. Supramol Chem 2012. [DOI: 10.1002/9780470661345.smc190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Akbarzadeh A, Zarghami N, Mikaeili H, Asgari D, Goganian AM, Khiabani HK, Samiei M, Davaran S. Synthesis, characterization, and in vitro evaluation of novel polymer-coated magnetic nanoparticles for controlled delivery of doxorubicin. Nanotechnol Sci Appl 2012; 5:13-25. [PMID: 24198493 DOI: 10.2147/nsa.s24328] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Poly (N-isopropylacrylamide-methyl methacrylic acid, PNIPAAm-MAA)-grafted magnetic nanoparticles were synthesized using silane-coated magnetic nanoparticles as a template for radical polymerization of N-isopropylacrylamide and methacrylic acid. Properties of these nanoparticles, such as size, drug-loading efficiency, and drug release kinetics, were evaluated in vitro for targeted and controlled drug delivery. The resulting nanoparticles had a diameter of 100 nm and a doxorubicin-loading efficiency of 75%, significantly higher doxorubicin release at 40°C compared with 37°C, and pH 5.8 compared with pH 7.4, demonstrating their temperature and pH sensitivity, respectively. In addition, the particles were characterized by X-ray powder diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, and vibrating sample magnetometry. In vitro cytotoxicity testing showed that the PNIPAAm-MAA-coated magnetic nanoparticles had no cytotoxicity and were biocompatible, indicating their potential for biomedical application.
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Affiliation(s)
- Abolfazl Akbarzadeh
- Department of Medicinal Chemistry, Tabriz University of Medical Sciences, Iran
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Saha K, Bajaj A, Duncan B, Rotello VM. Beauty is skin deep: a surface monolayer perspective on nanoparticle interactions with cells and bio-macromolecules. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:1903-18. [PMID: 21671432 PMCID: PMC3516997 DOI: 10.1002/smll.201100478] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Indexed: 05/24/2023]
Abstract
Surface recognition of biosystems is a critical component in the development of novel biosensors and delivery vehicles, and for the therapeutic regulation of biological processes. Monolayer-protected nanoparticles present a highly versatile scaffold for selective interaction with bio-macromolecules and cells. Through the engineering of the monolayer surface, nanoparticles can be tailored for surface recognition of biomolecules and cells. This review highlights recent progress in nanoparticle-bio-macromolecule/cellular interactions, emphasizing the effect of the surface monolayer structure on the interactions with proteins, DNA, and cell surfaces. The extension of these tailored interactions to hybrid nanomaterials, biosensing platforms, and delivery vehicles is also discussed.
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Affiliation(s)
- Krishnendu Saha
- Department of Chemistry, University of Massachusetts Amherst 710 North Pleasant Street, Amherst, MA 01003
| | - Avinash Bajaj
- Department of Chemistry, University of Massachusetts Amherst 710 North Pleasant Street, Amherst, MA 01003
- Regional Centre for Biotechnology, 180 Udyog Vihar Phase 1, Gurgaon-122016, Haryana, India
| | - Bradley Duncan
- Department of Chemistry, University of Massachusetts Amherst 710 North Pleasant Street, Amherst, MA 01003
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts Amherst 710 North Pleasant Street, Amherst, MA 01003
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Wang P, Jaganathan H, Ivanisevic A. Multicomponent DNA-templated nanoparticle chains with controllable dimension and composition. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:2021-2026. [PMID: 21626683 DOI: 10.1002/smll.201100067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Indexed: 05/30/2023]
Affiliation(s)
- Pengfei Wang
- Weldon School of Biomedical Engineering, Purdue University, 206 S. Martin Jischke Drive, West Lafayette, IN 47907-2032, USA
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Jaganathan H, Hugar DL, Ivanisevic A. Examining MRI contrast in three-dimensional cell culture phantoms with DNA-templated nanoparticle chains. ACS APPLIED MATERIALS & INTERFACES 2011; 3:1282-1288. [PMID: 21381721 DOI: 10.1021/am200086r] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
DNA-templated nanoparticle (NP) chains were examined as potential magnetic resonance imaging (MRI) contrast agents using in vitro environments of the extracellular matrix and tissue. A 3-T clinical MRI scanner was utilized to examine and compare image contrast enhanced by dispersed NPs, DNA-templated NP chains, gold-superparamagnetic multicomponent NP chains, and polyelectrolyte encapsulated, multicomponent NP chains in both T(1)-weighted and T(2)-weighted images. In addition, the longitudinal and transverse relaxivity (r(1) and r(2)) changes were measured both in the basement membrane, using Matrigel, and in the tissue environment, using in vitro 3D cell culture scaffolds. Results suggest that MRI contrast was significantly enhanced from NP chains compared to dispersed NPs in the basement membrane and polyelectrolyte encapsulation for NP chains produced similar relaxivity to nonencapsulated NP chains due to the enhanced cell uptake of encapsulated NP chains.
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Affiliation(s)
- Hamsa Jaganathan
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47906, USA
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22
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Novel glucose biosensor based on a glassy carbon electrode modified with hollow gold nanoparticles and glucose oxidase. Mikrochim Acta 2011. [DOI: 10.1007/s00604-010-0538-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Jaganathan H, Ivanisevic A. Gold–iron oxide nanoparticle chains scaffolded on DNA as potential magnetic resonance imaging agents. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02754e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yuan J, Xu Y, Müller AHE. One-dimensional magnetic inorganic–organic hybrid nanomaterials. Chem Soc Rev 2011; 40:640-55. [DOI: 10.1039/c0cs00087f] [Citation(s) in RCA: 175] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jaganathan H, Gieseck RL, Hudson K, Kellogg M, Ramaswamy AK, Raver KE, Smith T, Vacchiano AN, Wager A, Ivanisevic A. Mechanism of Proton Relaxation for Enzyme‐Manipulated, Multicomponent Gold–Magnetic Nanoparticle Chains. Chemphyschem 2010; 11:3664-72. [PMID: 21077085 DOI: 10.1002/cphc.201000397] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hamsa Jaganathan
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
| | - Richard L. Gieseck
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
| | - Katherine Hudson
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
| | - Michael Kellogg
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
| | - Aneesh K. Ramaswamy
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
| | - Kimberly E. Raver
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
| | - Tyler Smith
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
| | - Ashley N. Vacchiano
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
| | - Andrew Wager
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
| | - Albena Ivanisevic
- Department of Chemistry, Purdue University, West Lafayette, IN (USA)
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN (USA)
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Zhou J, Meng L, Feng X, Zhang X, Lu Q. One-Pot Synthesis of Highly Magnetically Sensitive Nanochains Coated with a Highly Cross-Linked and Biocompatible Polymer. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003820] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Zhou J, Meng L, Feng X, Zhang X, Lu Q. One-Pot Synthesis of Highly Magnetically Sensitive Nanochains Coated with a Highly Cross-Linked and Biocompatible Polymer. Angew Chem Int Ed Engl 2010; 49:8476-9. [DOI: 10.1002/anie.201003820] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Yuan W, Zhao Z, Yuan J, Gu S, Zhang F, Xie X, Ren J. Synthesis of pH- and temperature-responsive chitosan-graft-poly[2-(N,N-dimethylamino) ethyl methacrylate] copolymer and gold nanoparticle stabilization by its micelles. POLYM INT 2010. [DOI: 10.1002/pi.2926] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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29
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Wu C, He H, Gao H, Liu G, Ma R, An Y, Shi L. Synthesis of Fe3O4@SiO2@polymer nanoparticles for controlled drug release. Sci China Chem 2010. [DOI: 10.1007/s11426-010-0084-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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31
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Wang S, Lu L, Yang M, Lei Y, Shen G, Yu R. A novel cobalt hexacyanoferrate nanocomposite on CNT scaffold by seed medium and application for biosensor. Anal Chim Acta 2009; 651:220-6. [DOI: 10.1016/j.aca.2009.09.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Revised: 08/31/2009] [Accepted: 09/02/2009] [Indexed: 11/26/2022]
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32
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Ranjbar B, Gill P. Circular Dichroism Techniques: Biomolecular and Nanostructural Analyses- A Review. Chem Biol Drug Des 2009; 74:101-20. [DOI: 10.1111/j.1747-0285.2009.00847.x] [Citation(s) in RCA: 403] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Li S, Ma Y, Yue X, Cao Z, Dai Z. One-pot construction of doxorubicin conjugated magnetic silica nanoparticles. NEW J CHEM 2009. [DOI: 10.1039/b9nj00342h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Jaganathan H, Ivanisevic A. Circular dichroism study of enzymatic manipulation on magnetic and metallic DNA template nanowires. Colloids Surf B Biointerfaces 2008; 67:279-83. [DOI: 10.1016/j.colsurfb.2008.08.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2008] [Accepted: 08/29/2008] [Indexed: 11/26/2022]
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35
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Cao L, Ye J, Tong L, Tang B. A New Route to the Considerable Enhancement of Glucose Oxidase (GOx) Activity: The Simple Assembly of a Complex from CdTe Quantum Dots and GOx, and Its Glucose Sensing. Chemistry 2008; 14:9633-40. [DOI: 10.1002/chem.200800681] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Jaganathan H, Kinsella JM, Ivanisevic A. Circular Dichroism Study of the Mechanism of Formation of DNA Templated Nanowires. Chemphyschem 2008; 9:2203-6. [DOI: 10.1002/cphc.200800509] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Wang S, Wu Z, Qu F, Zhang S, Shen G, Yu R. A novel electrochemical immunosensor based on ordered Au nano-prickle clusters. Biosens Bioelectron 2008; 24:1026-32. [PMID: 18819790 DOI: 10.1016/j.bios.2008.08.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2008] [Revised: 07/14/2008] [Accepted: 08/05/2008] [Indexed: 11/29/2022]
Abstract
In this paper, we report a kind of ordered 3D Au nano-prickle clusters by directly electrodeposited on glassy carbon electrode utilizing the spatial obstruction/direction of the polycarbonate membrane. The proposed 3D nanoclusters are applied to fabricate a sandwich-type electrochemical immunosensor with human IgG as a model analyte. The electrodeposited Au nanoclusters build direct electrical contact and immobilization interface for protein molecules, which do not need post-modification and positioning. Scanning electron microscopy, cyclic voltammetry and alternating current impedance spectroscopy were used to investigate the properties of the modified interface. The deposited Au nanoclusters are stable with good biocompatibility, large specific surface area and high electron exchange capability. Under the optimized experimental conditions, a wide linear range from 1.0 to 10000.0 ng/mL was reached with a detection limit of 0.5 ng/mL. The calibration curve fits a second-order polynomial equation very well (R(2)=0.9914). The developed immunosensor based on Au nano-prickle clusters possesses advantages such as simple fabrication, fast response, low detection limit, wide linear range, easy regeneration, excellent reproducibility and long stability. To our knowledge, the Au nanostructure of special ordered 3D nano-prickle clusters is new for electrochemical immunosensor.
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Affiliation(s)
- Suiping Wang
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
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Chen FH, Gao Q, Ni JZ. The grafting and release behavior of doxorubincin from Fe(3)O(4)@SiO(2) core-shell structure nanoparticles via an acid cleaving amide bond: the potential for magnetic targeting drug delivery. NANOTECHNOLOGY 2008; 19:165103. [PMID: 21825634 DOI: 10.1088/0957-4484/19/16/165103] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Fe(3)O(4)@SiO(2) core-shell structure nanoparticles were first prepared and characterized by TEM, FTIR, XPS and XRD. Subsequently the widely used anticancer agent doxorubincin (DOX) was successfully grafted to the surface of the core-shell nanoparticles via an amide bond with the aid of a spacer arm we synthesized. The spacer arm met two needs: one end can couple to the core-shell nanoparticles' surface while the other end was the active -COOH group, which can react with the -NH(2) group of DOX molecules. The synthesized spacer arm and the conjugation of the drug with nanoparticles through amidation were confirmed by FTIR. The DOX-loading efficiency determined by UV-vis spectrometer was 86.5%. Drug release experiments displayed a pH-dependent behavior that DOX was cleaved from the nanoparticles easily under low pH conditions in the presence of protease and that most of the conjugated doxorubincin were released within the first 12 h. The prepared DOX-grafted Fe(3)O(4)@SiO(2) core-shell structure nanoparticles showed a superparamagnetic property with a saturation magnetization value of 49.3 emu g(-1), indicating a great potential application in the treatment of cancer using magnetic targeting drug-delivery technology.
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Affiliation(s)
- F H Chen
- State Key Laboratory of Rare Earth Resources and Application, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China. Graduate University of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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39
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Ofir Y, Samanta B, Rotello VM. Polymer and biopolymer mediated self-assembly of gold nanoparticles. Chem Soc Rev 2008; 37:1814-25. [DOI: 10.1039/b712689c] [Citation(s) in RCA: 311] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Patil AJ, Li M, Dujardin E, Mann S. Novel bioinorganic nanostructures based on mesolamellar intercalation or single-molecule wrapping of DNA using organoclay building blocks. NANO LETTERS 2007; 7:2660-5. [PMID: 17705435 DOI: 10.1021/nl071052q] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Nanosheets or nanoclusters of aminopropyl-functionalized magnesium phyllosilicate (AMP) were prepared in water by exfoliation and used as structural building blocks for the preparation of DNA-based hybrid nanostructures in the form of ordered mesolamellar nanocomposites or highly elongated nanowires, respectively. The former consisted of alternating layers of single sheets of AMP interspaced with intercalated monolayers of intact double-stranded DNA molecules of relatively short length ( approximately 700 base pairs) that were accessible to small molecules such as ethidium bromide. In contrast, the nanowires comprised isolated micrometer-long molecules of lambda-DNA or plasmid DNA that were sheathed in an ultrathin organoclay layer and which were either protected from or remained accessible to endonuclease-mediated clipping depending on the extent of biomolecule wrapping. Both types of hybrid nanostructures showed a marked increase in the DNA melting (denaturation) temperature, indicating significant thermal stabilization of the confined biomolecules. Our results suggest that nanoscale building blocks derived from organically modified inorganic clays could be useful agents for enhancing the chemical, thermal, and mechanical stability of isolated molecules or ensembles of DNA. Such constructs should have increased potential as functional components in bionanotechnology and nonviral gene transfection.
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Affiliation(s)
- Avinash J Patil
- Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
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41
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Kinsella JM, Ivanisevic A. Selective placement of templated DNA nanowires between microstructured electrodes. Int J Nanomedicine 2007; 1:219-22. [PMID: 17722539 PMCID: PMC2426792 DOI: 10.2147/nano.2006.1.2.219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Dip-pen nanolithography is used to selectively modify the SiOx area between microfabricated electrodes. The modified surface is characterized by atomic force microscopy, X-ray photoelectron spectroscopy, force volume imaging, and adhesion maps. The functionalized complex architecture is used for the localization of DNA coated with magnetic nanoparticles. The strategy reported here can become the basis for the construction of a number of functional devices. The devices can utilize the unique recognition properties of the DNA and the magnetic properties of the nanoparticles that template them.
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Affiliation(s)
- Joseph M Kinsella
- Weldon School of Biomedical Engineering, Purdue UniversityWest Lafayette, IN, USA
| | - Albena Ivanisevic
- Weldon School of Biomedical Engineering, Purdue UniversityWest Lafayette, IN, USA
- Department of Chemistry, Purdue UniversityWest Lafayette, IN, USA
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42
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Kinsella JM, Ivanisevic A. DNA-templated magnetic nanowires with different compositions: fabrication and analysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:3886-90. [PMID: 17316030 DOI: 10.1021/la0628571] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The structure and magnetic properties of different types of templated wires are compared in this study. A long DNA molecule was used to guide the assembly of pyrrolidinone-capped Fe2O3 and CoFe2O3 particles as well as polylysine-coated gold nanoparticles. The resulting DNA-templated wires were stretched onto silicon oxide surfaces using a receding meniscus procedure. The coated, stretched, and surface-bound wires were characterized using atomic force microscopy (AFM), magnetic force microscopy (MFM), and spectroscopic methods. The results with respect to the wire properties were correlated with those determined from the bulk properties of the nanoparticles and with the properties of the bulk DNA. The MFM measurements allowed us to visualize the formation of domains along the wires as well as qualitatively compare the magnetic properties of each templated structure.
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Affiliation(s)
- Joseph M Kinsella
- Weldon School of Biomedical Engineering and Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, USA
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43
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Song M, Pan C, Li J, Wang X, Gu Z. Electrochemical Study on Synergistic Effect of the Blending of Nano TiO2 and PLA Polymer on the Interaction of Antitumor Drug with DNA. ELECTROANAL 2006. [DOI: 10.1002/elan.200603613] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Zhu X, Han K, Li G. Magnetic Nanoparticles Applied in Electrochemical Detection of Controllable DNA Hybridization. Anal Chem 2006; 78:2447-9. [PMID: 16579633 DOI: 10.1021/ac051962x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electrochemical detection of hybridized DNA strands was achieved with a magnetic nanoparticle modified electrode and the commonly used electrochemical couple K3[Fe(CN)6]/K4[Fe(CN)6]. The detection proved to be fast and very simple. Furthermore, magnetic nanoparticles could be employed to control the DNA hybridization process. An inhibited or an enhanced degree of hybridizing could be produced.
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Affiliation(s)
- Xiaoli Zhu
- Department of Biochemistry and National Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, 210093 Nanjing, P. R. China
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45
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You CC, Verma A, Rotello VM. Engineering the nanoparticle-biomacromolecule interface. SOFT MATTER 2006; 2:190-204. [PMID: 32646145 DOI: 10.1039/b517354j] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Monolayer-protected nanoparticles feature tunable size, surface functionality and core material, providing scaffolds for targeting biomacromolecules. This review highlights recent advances in nanoparticle-biomacromolecule interactions, focusing on two key areas: (1) The modulation of structure and function of biomacromolecules through engineered interactions with nanoparticle surfaces; (2) The use of biomacromolecules as building blocks for nanostructured materials.
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Affiliation(s)
- Chang-Cheng You
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA.
| | - Ayush Verma
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA.
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA.
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46
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Wu ZS, Jiang JH, Fu L, Shen GL, Yu RQ. Optical detection of DNA hybridization based on fluorescence quenching of tagged oligonucleotide probes by gold nanoparticles. Anal Biochem 2006; 353:22-9. [PMID: 16626619 DOI: 10.1016/j.ab.2006.01.018] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2005] [Revised: 12/24/2005] [Accepted: 01/10/2006] [Indexed: 11/24/2022]
Abstract
A novel system for the detection of DNA hybridization in a homogeneous format is developed. This method is based on fluorescence quenching by gold nanoparticles used as both nanoscaffolds for the immobilization of capture sequences and nanoquenchers of fluorophores attached to detection sequences. The oligonucleotide-functionalized gold nanoparticles are synthesized by derivatizing the colloidal gold solution with 5'-thiolated 12-base oligonucleotides. Introduction of sequence-specific target DNAs (24 bases) into the mixture containing dye-tagged detection sequences and oligonucleotide-functionalized gold nanoparticles results in the quenching of carboxytetramethylrhodamine-labeled DNA fluorescence because DNA hybridization occurs and brings fluorophores into close proximity with oligonucleotide-functionalized gold nanoparticles. The quenching efficiency of fluorescence increases with the target DNA concentration and provides a quantitative measurement of sequence-specific DNA in sample. A linearity is obtained within the range from 1.4 to 92 nM. The target sequence is detected down to 2 nM. This new system not only overcomes many of the drawbacks inherent in radioisotopic measurement or enzyme-linked assay but also avoids the requirement for the stem-loop structure compared with conventional molecular beacons. Furthermore, the background signal that is defined as fluorescence quenching arising from electrostatic attraction between positively charged fluorophores and negatively charged gold nanoparticles is comparatively low due to electrostatic repulsion between negatively charged oligonucleotides. In addition, this is a homogeneous assay that can offer the potential to be monitored in real time, be amenable to automation, eliminate washing steps, and reduce the risk of contamination.
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Affiliation(s)
- Zai-Sheng Wu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, People's Republic of China
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47
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Tian Y, He Y, Ribbe AE, Mao C. Preparation of branched structures with long DNA duplex arms. Org Biomol Chem 2006; 4:3404-5. [PMID: 17036131 DOI: 10.1039/b605464a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Branched structures with long DNA duplex arms have been constructed through biotin-streptavidin binding and characterized by gel electrophoresis and atomic force microscopy (AFM) imaging.
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Affiliation(s)
- Ye Tian
- Purdue University, Department of Chemistry, West Lafayette, Indiana 47907, USA
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