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Dönmez Güngüneş Ç, Başçeken S, Elçin AE, Elçin YM. Fabrication and Molecular Modeling of Navette-Shaped Fullerene Nanorods Using Tobacco Mosaic Virus as a Nanotemplate. Mol Biotechnol 2022; 64:681-692. [PMID: 35067850 DOI: 10.1007/s12033-021-00440-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 12/13/2021] [Indexed: 10/19/2022]
Abstract
To date, metallization studies have been performed with the nanometer-scale template, Tobacco Mosaic Virus (TMV). Here we show that fullerenes as well can be deposited on TMV coat protein in a controlled manner. Two methods were followed for the coating process. First, underivatized fullerene was dispersed in different solvents to bring the underivatized fullerene and wild-type TMV together. Improved depositions were obtained with the fullerene dicarboxylic derivative synthesized via the Bingel method. The form of the coating was analyzed by transmission electron microscopy. Our results demonstrate that the coating efficiency with the carboxy derivative was much better compared to the underivatized fullerene. The goal of coupling a carbon nanoparticle to a biological molecule, the viral coat of TMV, was achieved with the carboxy derivative of fullerene, resulting in the production of navette-shaped nanorods. The interactions between carboxyfullerenes and TMV were investigated through modeling with computational simulations and Gaussian-based density functional theory (DFT) calculations using the Gaussian09 program package. The theoretical calculations supported the experimental findings. This inexpensive and untroublesome method promises new fullerene hybrid nanomaterials in particular shapes and structures.
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Affiliation(s)
- Çiğdem Dönmez Güngüneş
- Tissue Engineering, Biomaterials and Nanobiotechnology Laboratory, Faculty of Science, and Stem Cell Institute, Ankara University, Ankara, Turkey
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Hitit University, Corum, Turkey
| | - Sinan Başçeken
- Chemistry Department, Faculty of Arts and Sciences, Hitit University, Corum, Turkey
| | - Ayşe Eser Elçin
- Tissue Engineering, Biomaterials and Nanobiotechnology Laboratory, Faculty of Science, and Stem Cell Institute, Ankara University, Ankara, Turkey
| | - Yaşar Murat Elçin
- Tissue Engineering, Biomaterials and Nanobiotechnology Laboratory, Faculty of Science, and Stem Cell Institute, Ankara University, Ankara, Turkey.
- Biovalda Health Technologies, Inc, Ankara, Turkey.
- Faculty of Science, Biochemistry Division, Ankara University, Tandogan, 06100, Ankara, Turkey.
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2
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Shellaiah M, Thirumalaivasan N, Sun KW, Wu SP. A pH cooperative strategy for enhanced colorimetric sensing of Cr(III) ions using biocompatible L-glutamic acid stabilized gold nanoparticles. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105754] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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García-Lojo D, Núñez-Sánchez S, Gómez-Graña S, Grzelczak M, Pastoriza-Santos I, Pérez-Juste J, Liz-Marzán LM. Plasmonic Supercrystals. Acc Chem Res 2019; 52:1855-1864. [PMID: 31243968 DOI: 10.1021/acs.accounts.9b00213] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
For decades, plasmonic nanoparticles have been extensively studied due to their extraordinary properties, related to localized surface plasmon resonances. A milestone in the field has been the development of the so-called seed-mediated growth method, a synthetic route that provided access to an extraordinary diversity of metal nanoparticles with tailored size, geometry and composition. Such a morphological control came along with an exquisite definition of the optical response of plasmonic nanoparticles, thereby increasing their prospects for implementation in various fields. The susceptibility of surface plasmons to respond to small changes in the surrounding medium or to perturb (enhance/quench) optical processes in nearby molecules, has been exploited for a wide range of applications, from biomedicine to energy harvesting. However, the possibilities offered by plasmonic nanoparticles can be expanded even further by their careful assembly into either disordered or ordered structures, in 2D and 3D. The assembly of plasmonic nanoparticles gives rise to coupling/hybridization effects, which are strongly dependent on interparticle spacing and orientation, generating extremely high electric fields (hot spots), confined at interparticle gaps. Thus, the use of plasmonic nanoparticle assemblies as optical sensors have led to improving the limits of detection for a wide variety of (bio)molecules and ions. Importantly, in the case of highly ordered plasmonic arrays, other novel and unique optical effects can be generated. Indeed, new functional materials have been developed via the assembly of nanoparticles into highly ordered architectures, ranging from thin films (2D) to colloidal crystals or supercrystals (3D). The progress in the design and fabrication of 3D supercrystals could pave the way toward next generation plasmonic sensors, photocatalysts, optomagnetic components, metamaterials, etc. In this Account, we summarize selected recent advancements in the field of highly ordered 3D plasmonic superlattices. We first analyze their fascinating optical properties for various systems with increasing degrees of complexity, from an individual metal nanoparticle through particle clusters with low coordination numbers to disordered self-assembled structures and finally to supercrystals. We then describe recent progress in the fabrication of 3D plasmonic supercrystals, focusing on specific strategies but without delving into the forces governing the self-assembly process. In the last section, we provide an overview of the potential applications of plasmonic supercrystals, with a particular emphasis on those related to surface-enhanced Raman scattering (SERS) sensing, followed by a brief highlight of the main conclusions and remaining challenges.
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Affiliation(s)
- Daniel García-Lojo
- Department of Physical Chemistry and Biomedical Research Center (CINBIO), University of Vigo, As Lagoas-Marcosende, 36310 Vigo, Spain
| | - Sara Núñez-Sánchez
- Department of Physical Chemistry and Biomedical Research Center (CINBIO), University of Vigo, As Lagoas-Marcosende, 36310 Vigo, Spain
| | - Sergio Gómez-Graña
- Department of Physical Chemistry and Biomedical Research Center (CINBIO), University of Vigo, As Lagoas-Marcosende, 36310 Vigo, Spain
| | - Marek Grzelczak
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, Donostia−San Sebastián 20018, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Isabel Pastoriza-Santos
- Department of Physical Chemistry and Biomedical Research Center (CINBIO), University of Vigo, As Lagoas-Marcosende, 36310 Vigo, Spain
| | - Jorge Pérez-Juste
- Department of Physical Chemistry and Biomedical Research Center (CINBIO), University of Vigo, As Lagoas-Marcosende, 36310 Vigo, Spain
| | - Luis M. Liz-Marzán
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, 20014 Donostia−San Sebastián, Spain
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4
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Demir US, Shahbazi R, Calamak S, Ozturk S, Gultekinoglu M, Ulubayram K. Gold nano-decorated aligned polyurethane nanofibers for enhancement of neurite outgrowth and elongation. J Biomed Mater Res A 2018; 106:1604-1613. [PMID: 29427534 DOI: 10.1002/jbm.a.36365] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 01/13/2018] [Accepted: 02/01/2018] [Indexed: 12/21/2022]
Abstract
Neurite outgrowth and elongation of neural cells is the most important subject that is considered in nerve tissue engineering. In this regard, aligned nanofibers have taken much attention in terms of providing guidance for newly outgrown neurites. The main objective of this study was to fabricate aligned polyurethane nanofibers by electrospinning process and decorate them with gold nanoparticles to further investigate the synergistic effects of nanotopography, biological nerve growth factor (NGF) and electrical stimulations on neurite outgrowth and elongation of pheochromocytoma (PC-12) model cells. In this regard, smooth and uniform aligned polyurethane nanofibers with the average diameter of 519 ± 56 nm were fabricated and decorated with the gold nanoparticles with the average diameter of ∼50 nm. PC-12 cells were cultured on the various nanofiber surfaces inside the bio-mimetic bioreactor system and exposed either to NGF alone or combination of NGF and electrical stimulation. It was found that 50 ng/mL NGF concentration is an optimal value for the stimulation of neurite outgrowth. After 4 days of culture under 100 mV, 10 ms electrical stimulation in 1 h/day period it was found that the gold nanoparticle decorated aligned polyurethane nanofibers increased the neurite outgrowth and elongation more with the combinational NGF and electrical stimulation. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1604-1613, 2018.
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Affiliation(s)
- Ulku Selcen Demir
- Department of Bioengineering, Institute for Graduate Studies in Science and Engineering, Hacettepe University, Ankara, 06640, Turkey
| | - Reza Shahbazi
- Department of Nanotechnology and Nanomedicine, Institute for Graduate Studies in Science and Engineering, Hacettepe University, Ankara, 06640, Turkey
| | - Semih Calamak
- Department of Nanotechnology and Nanomedicine, Institute for Graduate Studies in Science and Engineering, Hacettepe University, Ankara, 06640, Turkey.,Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Hacettepe University, Ankara, 06100, Turkey
| | - Sukru Ozturk
- Department of Bioengineering, Institute for Graduate Studies in Science and Engineering, Hacettepe University, Ankara, 06640, Turkey.,Bioengineering Department, Gebze Technical University, Kocaeli, 41400, Turkey
| | - Merve Gultekinoglu
- Department of Bioengineering, Institute for Graduate Studies in Science and Engineering, Hacettepe University, Ankara, 06640, Turkey.,Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Hacettepe University, Ankara, 06100, Turkey
| | - Kezban Ulubayram
- Department of Bioengineering, Institute for Graduate Studies in Science and Engineering, Hacettepe University, Ankara, 06640, Turkey.,Department of Nanotechnology and Nanomedicine, Institute for Graduate Studies in Science and Engineering, Hacettepe University, Ankara, 06640, Turkey.,Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Hacettepe University, Ankara, 06100, Turkey.,Department of Polymer Science and Technology, Institute for Graduate Studies in Science and Engineering, Hacettepe University, Ankara, 06640, Turkey
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5
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Pereira SO, Barros-Timmons A, Trindade T. Polymer@gold Nanoparticles Prepared via RAFT Polymerization for Opto-Biodetection. Polymers (Basel) 2018; 10:E189. [PMID: 30966225 PMCID: PMC6415202 DOI: 10.3390/polym10020189] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 02/09/2018] [Accepted: 02/11/2018] [Indexed: 11/17/2022] Open
Abstract
Colloidal gold nanoparticles (Au NPs) have been used in several biological applications, which include the exploitation of size- and shape-dependent Localized Surface Plasmon Resonance (LSPR) in biosensing devices. In order to obtain functional and stable Au NPs in a physiological medium, surface modification and functionalization are crucial steps in these endeavors. Reversible addition-fragmentation chain transfer (RAFT) polymerization meets this need offering the possibility of control over the composition and architecture of polymeric shells coating Au NPs. Furthermore, playing with a careful choice of monomers, RAFT polymerization allows the possibility to design a polymer shell with the desired functional groups aiming at Au based nanocomposites suitable for biorecognition and biotargeting. This review provides important aspects concerning the synthesis and optical properties of Au NPs as well as concepts of RAFT polymerization. Understanding these concepts is crucial to appreciate the chemical strategies available towards RAFT-polymer coated Au core-shell nanostructures, which are here reviewed. Finally, examples of applications in opto-biodetection devices are provided and the potential of responsive "smart" nanomaterials based on such structures can be applied to other biological applications.
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Affiliation(s)
- Sónia O Pereira
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Ana Barros-Timmons
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Tito Trindade
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
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6
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Song J, Park S, Kim S, Im K, Park N. Electrostatic interaction driven gold nanoparticle assembly on three-dimensional triangular pyramid DNA nanostructures. NEW J CHEM 2017. [DOI: 10.1039/c7nj01944k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The electrostatic attraction between DNA structures and AuNPs has shown nonspecific assembly behavior and allowed tunable plasmonic absorption peaks.
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Affiliation(s)
- Jaejung Song
- School of Interdisciplinary Bioscience and Bioengineering
- Pohang University of Science & Technology (POSTECH)
- Pohang 790-784
- South Korea
| | - Sungmin Park
- Department of Chemistry
- Myongji University
- Gyeonggi-do 449-728
- South Korea
| | - Sehwan Kim
- Department of Chemistry
- Myongji University
- Gyeonggi-do 449-728
- South Korea
| | - Kyuhyun Im
- Samsung Advanced Institute of Technology
- Samsung Electronics
- Gyeonggido 446-712
- South Korea
| | - Nokyoung Park
- Department of Chemistry
- Myongji University
- Gyeonggi-do 449-728
- South Korea
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Dey N, Bhagat D, Cherukaraveedu D, Bhattacharya S. Utilization of Red-Light-Emitting CdTe Nanoparticles for the Trace-Level Detection of Harmful Herbicides in Adulterated Food and Agricultural Crops. Chem Asian J 2016; 12:76-85. [DOI: 10.1002/asia.201601302] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 1 India
| | - Deepa Bhagat
- Indian Council of Agricultural Research; National Bureau of Agriculturally Insect Resources; Bangalore 560 024 India
| | - Durgadas Cherukaraveedu
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 1 India
- School of Chemistry; University of Edinburgh; David Brewster Road, Joseph Black Building EH9 3JF United Kingdom
| | - Santanu Bhattacharya
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 1 India
- Indian Association of Cultivation of Science; Kolkata 700032 India
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8
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Byeon JH. Multifunctional metal-polymer nanoagglomerates from single-pass aerosol self-assembly. Sci Rep 2016; 6:31329. [PMID: 27507668 PMCID: PMC4979091 DOI: 10.1038/srep31329] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 07/18/2016] [Indexed: 12/24/2022] Open
Abstract
In this study, gold (Au)-iron (Fe) nanoagglomerates were capped by a polymer mixture (PM) consisting of poly(lactide-co-glycolic acid), protamine sulfate, and poly-l-lysine via floating self-assembly in a single-pass aerosol configuration as multibiofunctional nanoplatforms. The Au-Fe nanoagglomerates were directly injected into PM droplets (PM dissolved in dichloromethane) in a collison atomizer and subsequently heat-treated to liberate the solvent from the droplets, resulting in the formation of PM-capped Au-Fe nanoagglomerates. Measured in vitro, the cytotoxicities of the nanoagglomerates (>98.5% cell viability) showed no significant differences compared with PM particles alone (>98.8%), thus implying that the nanoagglomerates are suitable for further testing of biofunctionalities. Measurements of gene delivery performance revealed that the incorporation of the Au-Fe nanoagglomerates enhanced the gene delivery performance (3.2 × 106 RLU mg−1) of the PM particles alone (2.1 × 106 RLU mg−1), which may have been caused by the PM structural change from a spherical to a hairy structure (i.e., the change followed the agglomerated backbone). Combining the X-ray-absorbing ability of Au and the magnetic property of Fe led to magnetic resonance (MR)-computed tomography (CT) contrast ability in a phantom; and the signal intensities [which reached 64 s−1T2-relaxation in MR and 194 Hounsfield units (HUs) in CT at 6.0 mg mL−1] depended on particle concentration (0.5–6.0 mg mL−1).
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Affiliation(s)
- Jeong Hoon Byeon
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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Gentile P, Carmagnola I, Nardo T, Chiono V. Layer-by-layer assembly for biomedical applications in the last decade. NANOTECHNOLOGY 2015; 26:422001. [PMID: 26421916 DOI: 10.1088/0957-4484/26/42/422001] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In the past two decades, the design and manufacture of nanostructured materials has been of tremendous interest to the scientific community for their application in the biomedical field. Among the available techniques, layer-by-layer (LBL) assembly has attracted considerable attention as a convenient method to fabricate functional coatings. Nowadays, more than 1000 scientific papers are published every year, tens of patents have been deposited and some commercial products based on LBL technology have become commercially available. LBL presents several advantages, such as (1): a precise control of the coating properties; (2) environmentally friendly, mild conditions and low-cost manufacturing; (3) versatility for coating all available surfaces; (4) obtainment of homogeneous film with controlled thickness; and (5) incorporation and controlled release of biomolecules/drugs. This paper critically reviews the scientific challenge of the last 10 years--functionalizing biomaterials by LBL to obtain appropriate properties for biomedical applications, in particular in tissue engineering (TE). The analysis of the state-of-the-art highlights the current techniques and the innovative materials for scaffold and medical device preparation that are opening the way for the preparation of LBL-functionalized substrates capable of modifying their surface properties for modulating cell interaction to improve substitution, repair or enhancement of tissue function.
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Affiliation(s)
- P Gentile
- School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield S10 2TA, UK
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Kang MK, Lee J, Nguyen AH, Sim SJ. Label-free detection of ApoE4-mediated β-amyloid aggregation on single nanoparticle uncovering Alzheimer's disease. Biosens Bioelectron 2015; 72:197-204. [PMID: 25982728 DOI: 10.1016/j.bios.2015.05.017] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 04/20/2015] [Accepted: 05/06/2015] [Indexed: 11/29/2022]
Abstract
Beta amyloid (Aβ) deposition is a pathological milestone of Alzheimer's disease (AD). This is facilitated by an isoform of Apolipoprotein E4 (ApoE4), which is a dominant risk factor for AD. However, current in vitro Aβ aggregation assays were performed in extreme conditions not linked to physiological conditions, to understand the mechanism of Aβ induced neurotoxicity. Here, we present a simple method for the ApoE4-mediated Aβ aggregation at physiological conditions using single gold nanoparticle based on localized surface plasmon resonance (LSPR). It can be directly observed by dark-field microscope or even by the naked eye. Following LSPR principles, we used ApoE4 inducing Aβ42 self-assemblies on gold nanoparticles (AuNPs) surface via their surface charge interaction. Using physiologically mimic cerebrospinal fluid, we determined a detection limit of 1.5 pM for Aβ42 corresponding to the ~2.9 nm LSPR-peak shift under ApoE4. Interestingly, the result also shows that ApoE4 induces the aggregation of Aβ42 more specifically and rapidly than that of Aβ40. This is the first biomimetic platform for real-time detection of Aβ aggregation, mimicking biological conditions, which can be used to investigate AD directly.
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Affiliation(s)
- Min Kyung Kang
- Department of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Jeewon Lee
- Department of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Anh H Nguyen
- Department of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Sang Jun Sim
- Department of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea; Green School, Korea University, Seoul 136-713, Republic of Korea.
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Takeda Y, Mafuné F. Self-assembly of positively charged platinum nanoparticles in lysozyme crystal. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.04.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Investigations on the Secondary Structure of Polypeptide Chains in Polyelectrolyte Multilayers and their Effect on the Adhesion and Spreading of Osteoblasts. Biointerphases 2012; 7:62. [DOI: 10.1007/s13758-012-0062-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Accepted: 09/24/2012] [Indexed: 11/26/2022] Open
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Tan WS, Du Y, Luna LE, Khitass Y, Cohen RE, Rubner MF. Templated nanopores for robust functional surface porosity in poly(methyl methacrylate). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:13496-13502. [PMID: 22928489 DOI: 10.1021/la3024887] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A novel "sink and etch" technique is used to generate stable surface nanoporosity in poly(methyl methacrylate). Layer-by-layer assembly is first used to conformally coat PMMA substrates with a uniform layer of silica nanoparticles. Thermal annealing is then applied to cause sinking and engulfment of the silica nanoparticles into the thermoplastic PMMA surface. By selectively etching away the layer of embedded silica nanoparticles, a conformal porous layer of inversely templated structure can be obtained in the PMMA surface. Characterization with atomic force microscopy shows that a variety of nanoporous surface morphologies can be achieved simply by controlling the duration and temperature of thermal annealing. The nanoporous surfaces consisting of either as assembled silica nanoparticles or templated inverse porosity in PMMA were compared in terms of their antireflective (AR) properties. Measuring AR properties provided a quantitative means to compare the stability of these porous AR surfaces before and after several cleaning cycles. Our results show that while both types of surface porosity can provide excellent AR properties (optimized for 300-400 nm), the porous layer generated by the "sink and etch" technique showed superior mechanical stability.
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Affiliation(s)
- Wui Siew Tan
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
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Mahato M, Pal P, Tah B, Ghosh M, Talapatra GB. Study of silver nanoparticle-hemoglobin interaction and composite formation. Colloids Surf B Biointerfaces 2011; 88:141-9. [PMID: 21788120 DOI: 10.1016/j.colsurfb.2011.06.024] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Revised: 06/20/2011] [Accepted: 06/20/2011] [Indexed: 10/18/2022]
Abstract
Nanoscience is now an expanding field of research and finds potential application in biomedical area, but it is limited due to lack of comprehensive knowledge of the interactions operating in nano-bio system. Here, we report the studies on the interaction and formation of nano-bio complex between silver nanoparticle (AgNP) and human blood protein hemoglobin (Hb). We have employed several spectroscopic (absorption, emission, Raman, FTIR, CD, etc.) and electron diffraction techniques (FE-SEM and HR-TEM) to characterize the Hb-AgNP complex system. Our results show the Hb-AgNP interaction is concentration and time dependent. The AgNP particle can attach/come closer to heme, tryptophan, and amide as well aromatic amine residues. As a result, the Hb undergoes conformational change and becomes unfolded through the increment of β-sheet structure. The AgNP-Hb can form charge-transfers (CT) complex where the Hb-heme along with the AgNP involved in the electron transfer mechanism and form Hb-AgNP assembled structure. The electron transfer mechanism has been found to be dependent on the size of silver particle. The overall study is important in understanding the nano-bio system and in predicting the avenues to design and synthesis of novel nano-biocomposite materials in material science and biomedical area.
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Affiliation(s)
- Mrityunjoy Mahato
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India
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KOGA T, NISHIUMA C, HIGASHI N. Thermo-Responsive Polymer Micelle Triggered by Conformational Switch of Elastin-like Peptides. KOBUNSHI RONBUNSHU 2010. [DOI: 10.1295/koron.67.679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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