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El-Sayed MA, Ibrahim NS, Assi HAEM, El-Gawad MA, Mohammed WS, Ibrahim MA, Mesalam NM, Abdel-Moneim AE. Utilization of Biotechnology, Neurotransmitter and Cytogenetic Indices in Selecting Pigeon Breeds. Braz J Poult Sci 2023. [DOI: 10.1590/1806-9061-2021-1586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - HAEM Assi
- Animal Production Research Institute, Egypt
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2
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Abdollahramezani S, Hemmatyar O, Taghinejad M, Taghinejad H, Krasnok A, Eftekhar AA, Teichrib C, Deshmukh S, El-Sayed MA, Pop E, Wuttig M, Alù A, Cai W, Adibi A. Electrically driven reprogrammable phase-change metasurface reaching 80% efficiency. Nat Commun 2022; 13:1696. [PMID: 35354813 PMCID: PMC8967895 DOI: 10.1038/s41467-022-29374-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 03/02/2022] [Indexed: 01/23/2023] Open
Abstract
Phase-change materials (PCMs) offer a compelling platform for active metaoptics, owing to their large index contrast and fast yet stable phase transition attributes. Despite recent advances in phase-change metasurfaces, a fully integrable solution that combines pronounced tuning measures, i.e., efficiency, dynamic range, speed, and power consumption, is still elusive. Here, we demonstrate an in situ electrically driven tunable metasurface by harnessing the full potential of a PCM alloy, Ge2Sb2Te5 (GST), to realize non-volatile, reversible, multilevel, fast, and remarkable optical modulation in the near-infrared spectral range. Such a reprogrammable platform presents a record eleven-fold change in the reflectance (absolute reflectance contrast reaching 80%), unprecedented quasi-continuous spectral tuning over 250 nm, and switching speed that can potentially reach a few kHz. Our scalable heterostructure architecture capitalizes on the integration of a robust resistive microheater decoupled from an optically smart metasurface enabling good modal overlap with an ultrathin layer of the largest index contrast PCM to sustain high scattering efficiency even after several reversible phase transitions. We further experimentally demonstrate an electrically reconfigurable phase-change gradient metasurface capable of steering an incident light beam into different diffraction orders. This work represents a critical advance towards the development of fully integrable dynamic metasurfaces and their potential for beamforming applications. The authors demonstrate an efficient platform for electrically driven reconfigurable metasurfaces by using Ge2Sb2Te5 to realize non-volatile, reversible, multilevel, and fast optical modulation and wavefront engineering in the near-infrared spectral range.
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Affiliation(s)
- Sajjad Abdollahramezani
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Omid Hemmatyar
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Mohammad Taghinejad
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Hossein Taghinejad
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Alex Krasnok
- Photonics Initiative, Advanced Science Research Center, City University of New York, New York, NY, 10031, USA.,Department of Electrical and Computer Engineering, Florida International University, Miami, FL, 33174, USA
| | - Ali A Eftekhar
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | | | | | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Eric Pop
- Department of Electrical Engineering, Stanford, CA, 94305, USA.,Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.,Precourt Institute for Energy, Stanford University, Stanford, CA, 94305, USA
| | - Matthias Wuttig
- Physikalisches Institut IA, RWTH Aachen, 52074, Aachen, Germany
| | - Andrea Alù
- Photonics Initiative, Advanced Science Research Center, City University of New York, New York, NY, 10031, USA.,Physics Program, Graduate Center, City University of New York, New York, NY, 10016, USA
| | - Wenshan Cai
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.,School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Ali Adibi
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
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3
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Abstract
As renewable energy sources are either intermittent in nature or remote in location, developing cost-effective, sustainable, modular systems and technologies to store and transport renewables at an industrial scale is imperative. Storing cheap renewable electricity into chemical bonds (i.e., chemical energy storage) could be a transformative opportunity for reliable and resilient grid energy storage. This approach enables renewables to be stored and shipped similarly to fossil fuels. Currently, the chemical industry primarily consumes fossil feedstock as an energy source, which has been the standard for over a century. A paradigm shift is required to move toward a more sustainable route for chemical synthesis by electrifying and decarbonizing the modern chemical industry. As renewable electricity costs decrease, (photo)electrosynthesis is gaining interest for synthesizing high-value and high-energy fuels and molecules in a clean, sustainable, and decentralized manner.The nitrogen cycle is one of the Earth's most critical biogeochemical cycles since nitrogen is a vital element for all living organisms. Artificial nitrogen fixation via a (photo)electrochemical system powered by renewables provides an alternative route to resource- and carbon-intensive thermochemical processes. (Photo)electrochemical nitrogen fixation at a large scale necessitates the discovery of active, selective, and stable heterogeneous (photo)electrocatalysts. In addition, the use of advanced in situ and operando spectroscopic techniques is needed to pinpoint the underlying reaction mechanisms. The selectivity of nitrogen (N2) molecules on the catalyst surface and suppressing thermodynamically favorable side reactions (e.g., hydrogen evolution reaction) are the main bottlenecks in improving the rate of (photo)electrochemical nitrogen fixation in aqueous solutions. The rational design of electrode, electrolyte, and reactors is required to weaken the strong nitrogen-nitrogen triple bond (N≡N) at or near ambient conditions. This Account covers our group's recent advances in synthesizing shape-controlled hybrid plasmonic nanoparticles, including plasmonic-semiconductor and plasmonic-transition metal nanostructures with increased surface areas. The nanocatalysts' selectivity and activity toward nitrogen conversion are benchmarked in liquid- and gas-phase electrochemical systems. We leverage operando vibrational-type spectroscopy (i.e., surface-enhanced Raman spectroscopy (SERS)) to identify intermediate species relevant to nitrogen fixation at the electrode-electrolyte interface to gain mechanistic insights into reaction mechanisms, leading to the discovery of more efficient catalysts. Operando SERS revealed that the nitrogen reduction reaction (NRR) to ammonia on hybrid plasmonic-transition metal nanoparticle surfaces (e.g., Pd-Ag) occurs through an associative mechanism. In the NRR process, hydrazine (N2H4) is consumed as an intermediate species. A femtosecond pulsed laser is used to synthesize hybrid plasmonic photocatalysts with homogeneously distributed Pd atoms on a Au nanorod surface, resulting in enhanced optoelectronic and catalytic properties. The overarching goal is to develop modular photoelectrochemical systems for long-duration renewable energy storage. In the context of nitrogen fixation, we aim to propose strategies to manage the nitrogen cycle through the interconversion of N2 and active nitrogen-containing compounds (e.g., NH3, NOx), enabling a circular nitrogen economy with sustainable and positive social and economic outcomes. The versatile approaches presented in this Account can inform future opportunities in (photo)electrochemical energy conversion systems and solar fuel-based applications.
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Affiliation(s)
- Mohammadreza Nazemi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Mostafa A. El-Sayed
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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4
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Nazemi M, Panikkanvalappil SR, Liao CK, Mahmoud MA, El-Sayed MA. Role of Femtosecond Pulsed Laser-Induced Atomic Redistribution in Bimetallic Au-Pd Nanorods on Optoelectronic and Catalytic Properties. ACS Nano 2021; 15:10241-10252. [PMID: 34032116 DOI: 10.1021/acsnano.1c02347] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Utilizing solar energy for chemical transformations has attracted a growing interest in promoting the clean and modular chemical synthesis approach and addressing the limitations of conventional thermocatalytic systems. Under light irradiation, noble metal nanoparticles, particularly those characterized by localized surface plasmon resonance, commonly known as plasmonic nanoparticles, generate a strong electromagnetic field, excited hot carriers, and photothermal heating. Plasmonic nanoparticles enabling efficient absorption of light in the visible range have moderate catalytic activities. However, the catalytic performance of a plasmonic nanoparticle can be significantly enhanced by incorporating a highly catalytically active metal domain onto its surface. In this study, we demonstrate that femtosecond laser-induced atomic redistribution of metal domains in bimetallic Au-Pd nanorods (NRs) can enhance its photocurrent response by 2-fold compared to parent Au-Pd NRs. We induce structure changes on Au-Pd NRs by irradiating them with a femtosecond pulsed laser at 808 nm to precisely redistribute Pd atoms on AuNR surfaces, resulting in modified electronic and optical properties and, thereby, enhanced catalytic activity. We also investigate the trade-off between the effect of light absorption and catalytic activity by optimizing the structure and composition of bimetallic Au-Pd nanoparticles. This work provides insight into the design of hybrid plasmonic-catalytic nanostructures with well-tailored geometry, composition, and structure for solar-fuel-based applications.
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Affiliation(s)
- Mohammadreza Nazemi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Sajanlal R Panikkanvalappil
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02210, United States
| | - Chih-Kai Liao
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Mahmoud A Mahmoud
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Mostafa A El-Sayed
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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Abdollahramezani S, Hemmatyar O, Taghinejad M, Taghinejad H, Kiarashinejad Y, Zandehshahvar M, Fan T, Deshmukh S, Eftekhar AA, Cai W, Pop E, El-Sayed MA, Adibi A. Dynamic Hybrid Metasurfaces. Nano Lett 2021; 21:1238-1245. [PMID: 33481600 DOI: 10.1021/acs.nanolett.0c03625] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Efficient hybrid plasmonic-photonic metasurfaces that simultaneously take advantage of the potential of both pure metallic and all-dielectric nanoantennas are identified as an emerging technology in flat optics. Nevertheless, postfabrication tunable hybrid metasurfaces are still elusive. Here, we present a reconfigurable hybrid metasurface platform by incorporating the phase-change material Ge2Sb2Te5 (GST) into metal-dielectric meta-atoms for active and nonvolatile tuning of properties of light. We systematically design a reduced-dimension meta-atom, which selectively controls the hybrid plasmonic-photonic resonances of the metasurface via the dynamic change of optical constants of GST without compromising the scattering efficiency. As a proof-of-concept, we experimentally demonstrate two tunable metasurfaces that control the amplitude (with relative modulation depth as high as ≈80%) or phase (with tunability >230°) of incident light promising for high-contrast optical switching and efficient anomalous to specular beam deflection, respectively. Our findings further substantiate dynamic hybrid metasurfaces as compelling candidates for next-generation reprogrammable meta-optics.
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Affiliation(s)
- Sajjad Abdollahramezani
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
| | - Omid Hemmatyar
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
| | - Mohammad Taghinejad
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
| | - Hossein Taghinejad
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
| | - Yashar Kiarashinejad
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
| | - Mohammadreza Zandehshahvar
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
| | - Tianren Fan
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
| | - Sanchit Deshmukh
- Department of Electrical Engineering, Department of Materials Science and Engineering, Precourt Institute for Energy, Stanford University, Stanford, California 94305, United States
| | - Ali A Eftekhar
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
| | - Wenshan Cai
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
- School of Materials Science and Engineering, Georgia Institute of Technology, 801 Ferst Drive NW, Atlanta, Georgia 30332-0295, United States
| | - Eric Pop
- Department of Electrical Engineering, Department of Materials Science and Engineering, Precourt Institute for Energy, Stanford University, Stanford, California 94305, United States
| | - Mostafa A El-Sayed
- School of Materials Science and Engineering, Georgia Institute of Technology, 801 Ferst Drive NW, Atlanta, Georgia 30332-0295, United States
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Ali Adibi
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 778 Atlantic Drive NW, Atlanta, Georgia 30332-0250, United States
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Labouta HI, Hooshmand N, Upreti T, El-Sayed MA. Localized Plasmonic Photothermal Therapy as a Life-saving Treatment Paradigm for Hospitalized COVID-19 Patients. Plasmonics 2021; 16:1029-1033. [PMID: 33495692 PMCID: PMC7815498 DOI: 10.1007/s11468-020-01353-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/04/2020] [Indexed: 05/12/2023]
Abstract
Lung failure is the main reason for mortality in COVID-19 patients, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). To date, no drug has been clinically approved for treatment of COVID-19. Nanotechnology has a great potential in contributing significantly to the fight against COVID-19 by developing effective therapies that can selectively eradicate the respiratory virus load. We propose a novel COVID-19 management approach that is efficient in eliminating the virus load from the airways and protecting the lungs from the fatal effects of the virus. This approach relies on targeting the virus using ACE-2-functionalized gold nanorods (AuNRs) followed by irradiation with near-infrared (NIR) light for the selective eradication of SARS-CoV-2 without off-target effects, i.e., targeted plasmonic photothermal therapy. Using discrete dipole approximation (DDA), we quantitatively determined the efficiency of AuNRs (31 nm × 8 nm) in absorbing NIR when present at different orientations relative to one another on the surface of the virus. The safety and the local administration of AuNRs using a well-tolerated flexible bronchoscopy technique, commonly used for hospitalized COVID-19 patients, ensure feasibility and clinical translation. While requiring further research, we anticipate this approach to result in a first-line treatment for hospitalized COVID-19 patients that are experiencing severe respiratory conditions or belong to a high-risk population, e.g., seniors and diabetic patients.
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Affiliation(s)
- Hagar I. Labouta
- College of Pharmacy, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba Canada
- Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba Canada
- Biomedical Engineering, University of Manitoba, Winnipeg, Manitoba Canada
- Faculty of Pharmacy , University of Alexandria , Alexandria, Egypt
| | - Nasrin Hooshmand
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA USA
| | - Tushar Upreti
- College of Pharmacy, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba Canada
| | - Mostafa A. El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA USA
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7
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Ali MRK, Wu Y, Ghosh D, Do BH, Chen K, Dawson MR, Fang N, Sulchek TA, El-Sayed MA. Correction to Nuclear Membrane-Targeted Gold Nanoparticles Inhibit Cancer Cell Migration and Invasion. ACS Nano 2020; 14:12260. [PMID: 32902953 DOI: 10.1021/acsnano.0c07219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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8
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Nazemi M, Ou P, Alabbady A, Soule L, Liu A, Song J, Sulchek TA, Liu M, El-Sayed MA. Electrosynthesis of Ammonia Using Porous Bimetallic Pd–Ag Nanocatalysts in Liquid- and Gas-Phase Systems. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02680] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mohammadreza Nazemi
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405, United States
| | - Pengfei Ou
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Abdulaziz Alabbady
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405, United States
| | - Luke Soule
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405, United States
| | - Alan Liu
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405, United States
| | - Jun Song
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Todd A. Sulchek
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405, United States
| | - Meilin Liu
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405, United States
| | - Mostafa A. El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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Sharifi M, Hosseinali SH, Hossein Alizadeh R, Hasan A, Attar F, Salihi A, Shekha MS, Amen KM, Aziz FM, Saboury AA, Akhtari K, Taghizadeh A, Hooshmand N, El-Sayed MA, Falahati M. Plasmonic and chiroplasmonic nanobiosensors based on gold nanoparticles. Talanta 2020; 212:120782. [DOI: 10.1016/j.talanta.2020.120782] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 12/20/2022]
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10
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Abstract
Due to the considerable amount of applications of gold nanoparticles (AuNPs) in biological systems, there is a great need for an improved methodology to quantitatively measure the uptake of AuNPs in cells. Flow cytometry has the ability to measure intracellular AuNPs by collecting the light scattering from a large population of live cells through efficient single cell analysis. Traditionally, the side scattering setting of the flow cytometer, which is associated with a 488 nm excitation laser (SSC channel), is used to detect nanoparticle uptake. This method is limited as AuNPs do not have the optimized response when excited with this laser. Here, we reported that the use of more red-shifted excitation lasers will greatly enhance the optical signal needed for the flow cytometry-based detection of AuNSs (26 nm in diameter) and AuNRs (67 nm × 33 nm, length × width) uptake in triple negative breast cancer cells (MDA-MB-231).
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Affiliation(s)
- Yue Wu
- Laser Dynamics Lab (LDL), School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
| | - Moustafa R K Ali
- Laser Dynamics Lab (LDL), School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
| | - Kamaria Dansby
- Laser Dynamics Lab (LDL), School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
| | - Mostafa A El-Sayed
- Laser Dynamics Lab (LDL), School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
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Falahati M, Attar F, Sharifi M, Saboury AA, Salihi A, Aziz FM, Kostova I, Burda C, Priecel P, Lopez-Sanchez JA, Laurent S, Hooshmand N, El-Sayed MA. Gold nanomaterials as key suppliers in biological and chemical sensing, catalysis, and medicine. Biochim Biophys Acta Gen Subj 2019; 1864:129435. [PMID: 31526869 DOI: 10.1016/j.bbagen.2019.129435] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 09/11/2019] [Accepted: 09/11/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Gold nanoparticles (AuNPs) with unique physicochemical properties have received a great deal of interest in the field of biological, chemical and biomedical implementations. Despite the widespread use of AuNPs in chemical and biological sensing, catalysis, imaging and diagnosis, and more recently in therapy, no comprehensive summary has been provided to explain how AuNPs could aid in developing improved sensing and catalysts systems as well as medical settings. SCOPE OF REVIEW The chemistry of Au-based nanosystems was followed by reviewing different applications of Au nanomaterials in biological and chemical sensing, catalysis, imaging and diagnosis by a number of approaches, and finally synergistic combination therapy of different cancers. Afterwards, the clinical impacts of AuNPs, future application of AuNPs, and opportunities and challenges of AuNPs application were also discussed. MAJOR CONCLUSIONS AuNPs show exclusive colloidal stability and are considered as ideal candidates for colorimetric detection, catalysis, imaging, and photothermal transducers, because their physicochemical properties can be tuned by adjusting their structural dimensions achieved by the different manufacturing methods. GENERAL SIGNIFICANCE This review provides some details about using AuNPs in sensing and catalysis applications as well as promising theranostic nanoplatforms for cancer imaging and diagnosis, and sensitive, non-invasive, and synergistic methods for cancer treatment in an almost comprehensive manner.
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Affiliation(s)
- Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Farnoosh Attar
- Department of Biology, Faculty of Food Industry & Agriculture, Standard Research Institute (SRI), Karaj, Iran
| | - Majid Sharifi
- Department of Nanotechnology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Abbas Salihi
- Department of Biology, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq; Department of Medical Analysis, Faculty of Science, Tishk International University, Erbil, Iraq
| | - Falah Mohammad Aziz
- Department of Biology, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq
| | - Irena Kostova
- Department of Chemistry, Faculty of Pharmacy, Medical University, 2 Dunav St., Sofia 1000, Bulgaria
| | - Clemens Burda
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, United States
| | - Peter Priecel
- Stephenson Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, United Kingdom
| | - Jose A Lopez-Sanchez
- Stephenson Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, United Kingdom
| | - Sophie Laurent
- General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Avenue Maistriau, 19, B-7000 Mons, Belgium; Center for Microscopy and Molecular Imaging (CMMI), Rue A. Bolland, 8 B-6041 Gosselies, Belgium
| | - Nasrin Hooshmand
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, United States
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, United States
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12
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Sharifi M, Attar F, Saboury AA, Akhtari K, Hooshmand N, Hasan A, El-Sayed MA, Falahati M. Plasmonic gold nanoparticles: Optical manipulation, imaging, drug delivery and therapy. J Control Release 2019; 311-312:170-189. [PMID: 31472191 DOI: 10.1016/j.jconrel.2019.08.032] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 08/25/2019] [Accepted: 08/26/2019] [Indexed: 12/20/2022]
Abstract
Over the past two decades, the development of plasmonic nanoparticle (NPs), especially gold (Au) NPs, is being pursued more seriously in the medical fields such as imaging, drug delivery, and theranostic systems. However, there is no comprehensive review on the effect of the physical and chemical parameters of AuNPs on their plasmonic properties as well as the use of these unique characteristic in medical activities such as imaging and therapeutics. Therefore, in this literature the surface plasmon resonance (SPR) modeling of AuNPs was accurately captured toward precision medicine. Indeed, we investigated the importance of plasmonic properties of AuNPs in optical manipulation, imaging, drug delivery, and photothermal therapy (PTT) of cancerous cells based on their physicochemical properties. Finally, some challenges regarding the commercialization of AuNPs in future medicine such as, cytotoxicity, lack of standards for medical applications, high cost, and time-consuming process were discussed.
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Affiliation(s)
- Majid Sharifi
- Department of Nanotechnology, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Farnoosh Attar
- Department of Biology, Faculty of Food Industry & Agriculture, Standard Research Institute, Karaj, Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Keivan Akhtari
- Department of Physics, University of Kurdistan, Sanandaj, Iran
| | - Nasrin Hooshmand
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, United States
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; Biomedical Research Center, Qatar University, Doha 2713, Qatar.
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, United States.
| | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
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13
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Ali MRK, Farghali HAM, Wu Y, El-Sayed I, Osman AH, Selim SA, El-Sayed MA. Gold Nanorod-Assisted Photothermal Therapy Decreases Bleeding during Breast Cancer Surgery in Dogs and Cats. Cancers (Basel) 2019; 11:E851. [PMID: 31248191 PMCID: PMC6627051 DOI: 10.3390/cancers11060851] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 12/28/2022] Open
Abstract
For localized tumors, gold nanorod (AuNR)-assisted plasmonic photothermal therapy (PPTT) is a potentially effective alternative to traditional surgery, in which AuNRs absorb near-infrared light and convert it to heat in order to kill cancer cells. However, for large tumors (volume ≥ 20 cm3), an uneven distribution of AuNRs might cause inhomogeneity of the heat distribution inside the tumor. Surgery is frequently recommended for removing large tumors, but it is associated with a high risk of cancer recurrence and metastasis. Here, we applied PPTT before surgery, which showed improved treatment for large tumors. We divided the animals (eight cats/dogs) into two groups: Group I (control), where three cases were solely treated with surgery, laser, or AuNRs alone, resulting in recurrence and metastasis; and Group II, where animals were treated with PPTT before surgery. In Group II, four out of the five cases had tumor regression without any recurrence or metastasis. Interestingly, we observed that applying PPTT before surgery displayed reduced bleeding during tumor removal, supported by histopathology that showed altered blood vessels. In conclusion, our study showed that applying AuNR-assisted PPTT (AuNRs-PPTT) before surgery could significantly affect blood vessels inside the tumor, leading to a decreased amount of bleeding during surgery, which can potentially decrease the risk of metastasis and blood loss during surgery.
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Affiliation(s)
- Moustafa R K Ali
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
| | | | - Yue Wu
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
| | - Ivan El-Sayed
- Department of Otolaryngology, University of California, San Francisco, CA 94115, USA.
| | - Ahmed H Osman
- Department of Veterinary Medicine, Cairo University, Giza 12211, Egypt.
| | - Salah A Selim
- Department of Veterinary Medicine, Cairo University, Giza 12211, Egypt.
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
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14
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Nazemi M, El-Sayed MA. The Role of Oxidation of Silver in Bimetallic Gold-Silver Nanocages on Electrocatalytic Activity of Nitrogen Reduction Reaction. J Phys Chem A 2019. [PMID: 30991002 DOI: 10.1021/acs.jpca.9b01107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electrochemical ammonia synthesis from nitrogen and water provides an alternative route to the thermochemical process (Haber-Bosch) in a clean, sustainable, and decentralized way if electricity is generated from renewable sources. We have previously demonstrated the use of bimetallic hollow Au-Ag nanocages as an effective electrocatalyst for electrosynthesis of ammonia in an aqueous solution. The stability of the electrocatalyst during electrochemical nitrogen reduction reaction (NRR) is of paramount importance when considering the feasibility of electrochemical NRR for industrial applications. Here, the role of oxidation of silver in bimetallic Au-Ag nanocages with various localized surface plasmon resonance (LSPR) peak positions on electrocatalytic activity of NRR is studied by oxygen treatment of Ag through the simple oxidation process to form Ag2O-Au nanocages. Electrocatalytic NRR activity with an NH3 yield rate of 2.14 µg cm-2 h-1 and Faradaic efficiency of 23.4% has been achieved at -0.4V vs. RHE using Ag2O-Au-719. This electrochemical performance is a substantial reduction to our previously reported NRR activity using Ag-Au-715 nanocages (3.74 µg cm-2 h-1 and 35.9% at -0.4V vs. RHE). This work highlights the importance of an O2-free environment in electrochemical NRR for the stable N2 electrolysis operation and discerns the role of Ag on the selectivity and activity of bimetallic Au-Ag nanocages toward NRR.
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15
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Panikkanvalappil SR, Garlapati C, Hooshmand N, Aneja R, El-Sayed MA. Monitoring the dynamics of hemeoxygenase-1 activation in head and neck cancer cells in real-time using plasmonically enhanced Raman spectroscopy. Chem Sci 2019; 10:4876-4882. [PMID: 31183038 PMCID: PMC6520930 DOI: 10.1039/c9sc00093c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 03/21/2019] [Indexed: 12/13/2022] Open
Abstract
Real-time monitoring of the dynamics of pharmacologically generated HO-1 in mammalian cells by using plasmonically enhanced Raman spectroscopy (PERS).
We report for the first time the usage of plasmonically enhanced Raman spectroscopy (PERS) to directly monitor the dynamics of pharmacologically generated hemeoxygenase-1 (HO-1) by evaluating the kinetics of formation of carbon monoxide (CO), one of the metabolites of HO-1 activation, in live cells during cisplatin treatment. Being an endogenous signaling molecule, CO plays an important role in cancer regression. Many aspects of HO-1's and CO's functions in biology are still unclear largely due to the lack of technological tools for the real-time monitoring of their dynamics in live cells and tissues. In this study, we found that, together with nuclear region-targeted gold nanocubes (AuNCs), cisplatin treatment can dramatically trigger the activation of HO-1 and thereby the rate and production of CO in mammalian cells in a dose-dependent manner. Though quantitative molecular data revealed that a lower concentration of cisplatin up-regulates HO-1 expression in cancer cells, PERS data suggest that it poorly facilitates the activation of HO-1 and thereby the production of CO. However, at a higher dose, cisplatin along with AuNCs could significantly enhance the activation of HO-1 in cancer cells, which could be probed in real-time by monitoring the CO generation by using PERS. Under the same conditions, the rate of formation of CO in healthy cells was relatively higher in comparison to the cancer cells. Additionally, molecular data revealed that AuNCs have the potential to suppress the up-regulation of HO-1 in cancer cells during cisplatin treatment at a lower concentration. As up-regulation of HO-1 has a significant role in cell adaptation to oxidative stress in cancer cells, the ability of AuNCs in suppressing the HO-1 overexpression will have a remarkable impact in the development of nanoformulations for combination cancer therapy. This exploratory study demonstrates the unique possibilities of PERS in the real-time monitoring of endogenously generated CO and thereby the dynamics of HO-1 in live cells, which could expedite our understanding of the signaling action of CO and HO-1 in cancer progression.
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Affiliation(s)
- Sajanlal R Panikkanvalappil
- Laser Dynamics Laboratory , School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , USA .
| | | | - Nasrin Hooshmand
- Laser Dynamics Laboratory , School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , USA .
| | - Ritu Aneja
- Georgia State University , Department of Biology , Atlanta , GA , USA
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory , School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , USA .
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16
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Chen D, Mahmoud MA, Wang JH, Waller GH, Zhao B, Qu C, El-Sayed MA, Liu M. Operando Investigation into Dynamic Evolution of Cathode-Electrolyte Interfaces in a Li-Ion Battery. Nano Lett 2019; 19:2037-2043. [PMID: 30803236 DOI: 10.1021/acs.nanolett.9b00179] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
While Li-ion battery cathode-electrolyte interfaces (CEIs) have been extensively investigated in recent decades, accurately identifying the chemical nature and tracking the dynamics of the CEIs during electrochemical cycling still remain a grand challenge. Here we report our findings in the investigation into the dynamic evolution of the interface between a LiNi0.33Co0.33Mn0.33O2 (LNMC) cathode and an ethylene carbonate/dimethyl carbonate (EC/DMC)-based electrolyte using surface-enhanced Raman spectroscopy (SERS) performed on a model cell under typical battery operating conditions. In particular, the strong SERS activity provided by a monolayer of Au nanocubes deposited on a model LNMC electrode (additive-free) enables quasi-quantitative assessment of the CEI evolution during cycling, proving information vital to revealing the dynamics of the species adsorbed on the LNMC surface as a function of cell potential. Furthermore, our theoretical calculation, which is based on the interaction between a model interface-bound molecule and a model LNMC surface, agrees with our experimental observation. The carefully designed operando SERS platform has demonstrated high sensitivity, good surface specificity, and excellent compatibility with extensive electrochemical measurements; it is also applicable to fundamental studies of dynamic interfaces in other electrochemical energy storage and conversion systems.
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Affiliation(s)
- Dongchang Chen
- School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies , Georgia Institute of Technology , 771 Ferst Drive , Atlanta , Georgia 30332-0245 , United States
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry , Georgia Institute of Technology , 901 Atlantic Drive , Atlanta , Georgia 30332-0400 , United States
| | - Mahmoud A Mahmoud
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry , Georgia Institute of Technology , 901 Atlantic Drive , Atlanta , Georgia 30332-0400 , United States
- Chemical Engineering, Department of Biomedical Engineering, College of Engineering , The University of Texas at San Antonio , One UTSA Circle, San Antonio , Texas 78249 , United States
| | - Jeng-Han Wang
- Department of Chemistry , National Taiwan Normal University , 88, Sec. 4 Ting-Zhou Road , Taipei 11677 , Taiwan R.O.C
| | - Gordon H Waller
- School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies , Georgia Institute of Technology , 771 Ferst Drive , Atlanta , Georgia 30332-0245 , United States
| | - Bote Zhao
- School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies , Georgia Institute of Technology , 771 Ferst Drive , Atlanta , Georgia 30332-0245 , United States
| | - Chong Qu
- School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies , Georgia Institute of Technology , 771 Ferst Drive , Atlanta , Georgia 30332-0245 , United States
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry , Georgia Institute of Technology , 901 Atlantic Drive , Atlanta , Georgia 30332-0400 , United States
| | - Meilin Liu
- School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies , Georgia Institute of Technology , 771 Ferst Drive , Atlanta , Georgia 30332-0245 , United States
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17
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Wu Y, Ali MRK, Dong B, Han T, Chen K, Chen J, Tang Y, Fang N, Wang F, El-Sayed MA. Gold Nanorod Photothermal Therapy Alters Cell Junctions and Actin Network in Inhibiting Cancer Cell Collective Migration. ACS Nano 2018; 12:9279-9290. [PMID: 30118603 PMCID: PMC6156989 DOI: 10.1021/acsnano.8b04128] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Most cancer-related deaths come from metastasis. It was recently discovered that nanoparticles could inhibit cancer cell migration. Whereas most researchers focus on single-cell migration, the effect of nanoparticle treatment on collective cell migration has not been explored. Collective migration occurs commonly in many types of cancer metastasis, where a group of cancer cells move together, which requires the contractility of the cytoskeleton filaments and the connection of neighboring cells by the cell junction proteins. Here, we demonstrate that gold nanorods (AuNRs) and the introduction of near-infrared light could inhibit the cancer cell collective migration by altering the actin filaments and cell junctions with significantly triggered phosphorylation changes of essential proteins, using mass spectrometry-based phosphoproteomics. Further observation using super-resolution stochastic optical reconstruction microscopy (STORM) showed the actin cytoskeleton filament bundles were disturbed, which is difficult to differentiate under a normal fluorescence microscope. The decreased expression level of N-cadherin junctions and morphological changes of tight junction protein zonula occludens 2 were also observed. All of these results indicate possible functions of the AuNR treatments in regulating and remodeling the actin filaments and cell junction proteins, which contribute to decreasing cancer cell collective migration.
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Affiliation(s)
- Yue Wu
- Laser Dynamics Lab, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA
| | - Moustafa R. K. Ali
- Laser Dynamics Lab, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA
| | - Bin Dong
- Department of Chemistry, Georgia State University, P.O. Box 3965, Atlanta, Georgia 30302
| | - Tiegang Han
- Laser Dynamics Lab, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA
| | - Kuangcai Chen
- Department of Chemistry, Georgia State University, P.O. Box 3965, Atlanta, Georgia 30302
| | - Jin Chen
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, Liaoning, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Tang
- Department of Medicine, Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Ning Fang
- Department of Chemistry, Georgia State University, P.O. Box 3965, Atlanta, Georgia 30302
- Corresponding Author: Ning Fang, , Fangjun Wang, , Mostafa A. El-Sayed,
| | - Fangjun Wang
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, Liaoning, P. R. China
- Corresponding Author: Ning Fang, , Fangjun Wang, , Mostafa A. El-Sayed,
| | - Mostafa A. El-Sayed
- Laser Dynamics Lab, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA
- Corresponding Author: Ning Fang, , Fangjun Wang, , Mostafa A. El-Sayed,
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18
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Nazemi M, El-Sayed MA. Electrochemical Synthesis of Ammonia from N 2 and H 2O under Ambient Conditions Using Pore-Size-Controlled Hollow Gold Nanocatalysts with Tunable Plasmonic Properties. J Phys Chem Lett 2018; 9:5160-5166. [PMID: 30139258 DOI: 10.1021/acs.jpclett.8b02188] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
An electrochemical nitrogen reduction reaction (NRR) could provide an alternative pathway to the Haber-Bosch process for clean, sustainable, and decentralized NH3 production when it is coupled with renewably derived electricity sources. Developing an electrocatalyst that overcomes sluggish kinetics due to the challenges associated with N2 adsorption and cleavage and that also produces NH3 with a reasonable yield and efficiency is an urgent need. Here, we engineer the size and density of pores in the walls of hollow Au nanocages (AuHNCs) by tuning their peak localized surface plasmon resonance (LSPR); in this way, we aim to enhance the rate of electroreduction of N2 to NH3. The interdependency between the pore size/density, the peak LSPR position, the silver content in the cavity, and the total surface area of the nanoparticle should be realized for further optimization of hollow plasmonic nanocatalysts in electrochemical NRRs.
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Affiliation(s)
- Mohammadreza Nazemi
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
- George W. Woodruff School of Mechanical Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332-0405 , United States
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
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19
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Jang H, Kang K, El-Sayed MA. Real-time tracking of the autophagy process in living cells using plasmonically enhanced Raman spectroscopy of fucoidan-coated gold nanoparticles. J Mater Chem B 2018; 6:5460-5465. [PMID: 32254605 DOI: 10.1039/c8tb01402g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
To date, a variety of biological assays such as immunostaining, western blotting, enzyme-linked immunosorbent assay (ELISA), and flow cytometry have been used to analyze and trace important biological events and therapies. In addition to these techniques, the application of microscopic analytical techniques such as matrix-assisted laser desorption/ionization-time of flight (MALDI-ToF) mass spectrometry and Raman spectroscopy is increasing, allowing information to be obtained at the molecular level. In this study, we have conducted real-time tracking of autophagy, a cellular process that has recently been attracting significant attention. To achieve this purpose, we performed Raman spectroscopy on human oral squamous carcinoma cells (HSC3) incubated with bioactive molecule-modified plasmonic gold nanoparticles. The bioactive molecule-nanoparticle complexes were synthesized using fucoidan, a biopolymer that induces autophagy. By using this platform, it was possible to trace the entire autophagic process successively from cell introduction to autophagic apoptosis. This fusion of nanocomposites and spectroscopic techniques is expected to enable more complex biological processes to be pursued at the molecular level in the future.
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Affiliation(s)
- Hongje Jang
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA30332, USA.
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20
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El-Sayed MA, Schatz GC. Virtual Issue in Memory of Ahmed Zewail. J Phys Chem A 2018; 120:7405-7. [PMID: 27681082 DOI: 10.1021/acs.jpca.6b08645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Wu Y, Ali MR, Fang N, El-Sayed MA. Abstract LB-365: Microscopic imaging for understanding gold nanorods-protein interactions in inhibiting cancer cell migration. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-lb-365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Metastasis is the primary cause of cancer-related deaths. Current clinical treatments for anti-metastasis, however, are not effective. Gold nanorods (AuNRs), which are safe within biological systems, were recently discovered to inhibit cancer cell migration and prevent metastasis. However, the mechanism of how AuNRs inhibit cancer cell migration remains largely unexplored. The migration of cancer cells from one site to another requires dramatic remodeling of cytoskeleton proteins. Our recent studies have shown a great impact of AuNRs treatment on proteins that regulate the cytoskeleton. However, the interaction of AuNRs and the cytoskeletal structures are not well studied due to the lack of advanced microscopic technologies at single nanoparticle-single protein level. Herein, we used cutting-edge imaging techniques to enable the study of the direct correlation between cytoskeleton filaments (microtubule) and AuNRs . Differential interference contrast (DIC) (for imaging AuNRs) and the stochastic optical reconstruction microscopy (STORM) (for imaging proteins) were combined to resolve the interaction of how AuNRs interact with the cytoskeleton filaments, disrupt the cytoskeleton structures, including microtubule and therefore inhibit cell migration. In conclusion, we are able to visualize the interaction of AuNRs with cytoskeleton filaments at nanometer resolution with their accurate intracellular location, which is beneficial for the future studies of nanoparticle-cell interactions.
Citation Format: Yue Wu, Moustafa R. Ali, Ning Fang, Mostafa A. El-Sayed. Microscopic imaging for understanding gold nanorods-protein interactions in inhibiting cancer cell migration [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr LB-365.
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Affiliation(s)
- Yue Wu
- 1Georgia Institute of Technology, Atlanta, GA
| | | | - Ning Fang
- 2Georgia State University, Atlanta, GA
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22
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Geng J, Aioub M, El-Sayed MA, Barry BA. UV Resonance Raman Study of Apoptosis, Platinum-Based Drugs, and Human Cell Lines. Chemphyschem 2018; 19:1428-1431. [DOI: 10.1002/cphc.201800252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Jiafeng Geng
- School of Chemistry and Biochemistry and the Parker H. Petit Institute of Bioengineering and Bioscience; Georgia Institute of Technology; Atlanta, Georgia USA
| | - Mena Aioub
- School of Chemistry and Biochemistry, the Parker H. Petit Institute of Bioengineering and Bioscience, and the Laser Dynamics Laboratory; Georgia Institute of Technology; Atlanta, Georgia USA
| | - Mostafa A. El-Sayed
- School of Chemistry and Biochemistry, the Parker H. Petit Institute of Bioengineering and Bioscience, and the Laser Dynamics Laboratory; Georgia Institute of Technology; Atlanta, Georgia USA
| | - Bridgette A. Barry
- School of Chemistry and Biochemistry and the Parker H. Petit Institute of Bioengineering and Bioscience; Georgia Institute of Technology; Atlanta, Georgia USA
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23
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Dowidar YA, El-Sayed MA, Elrefy AM, Shoura HE. Detection of myostatin gene MSTN in some goat breeds ( Capra hircus). J Genet Eng Biotechnol 2018; 16:507-512. [PMID: 30733767 PMCID: PMC6353733 DOI: 10.1016/j.jgeb.2018.04.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 04/12/2018] [Accepted: 04/23/2018] [Indexed: 11/21/2022]
Abstract
Till now not information about myostatin MSTN gene in Egyptian goat breeds. Here we show more information about MSTN in some Egyptian goat breeds to enrich the database with new sequences for Egyptian goat breeds. Our conducted study focused on detection and identifying the MSTN gene as a candidate gene of the muscles growth trait in three goat breeds (Zaraibi, Baladi and Damascus). We found the similarity between the registered sequences with the accession numbers KY463684 for Zaraibi and KY463685 for Baladi and Chinese goat breeds of the MSTN gene deposited with international gene banks by up to 99% and some other species including sheep, cows and bull breeds with percentages of 95 to 97% and between 95 to 99%, respectively. There is also a correlation between the sequences of the registered pieces of Baladi with KY463686 and Damascus and Chinese breeds with KY441464 of MSTN deposited with international gene banks by up to 99% and some other species including sheep and bull breeds at a ratio of 99% for two pieces. Results demonstrated the deposited sequences of object are part of intron 1, exon 2 is fully sequenced with Zaraibi and Baladi breeds; the intron 1, exon 1 with Baladi breed; and the intron 2, part of exon 3 with Damascus breed. Therefore, the Egyptian goat breeds consider national wealth can be used to develop breeding and improvement programs which helps in more applicable scopes like biotechnology, genetic engineering and molecular biology with the help of bioinformatics tools.
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Affiliation(s)
- Y A Dowidar
- Biotechnology Dept., Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - M A El-Sayed
- Animal Genetic Resources Dept., National Gene Bank, Agricultural Research Center, Egypt
| | - Aly M Elrefy
- Biotechnology Dept., Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - Hytham E Shoura
- Biotechnology Dept., Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
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Abdelhafiz AA, Ganzoury MA, Amer AW, Faiad AA, Khalifa AM, AlQaradawi SY, El-Sayed MA, Alamgir FM, Allam NK. Defect engineering in 1D Ti-W oxide nanotube arrays and their correlated photoelectrochemical performance. Phys Chem Chem Phys 2018; 20:10258-10265. [PMID: 29594276 DOI: 10.1039/c8cp01413b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Understanding the nature of interfacial defects of materials is a critical undertaking for the design of high-performance hybrid electrodes for photocatalysis applications. Theoretical and computational endeavors to achieve this have touched boundaries far ahead of their experimental counterparts. However, to achieve any industrial benefit out of such studies, experimental validation needs to be systematically undertaken. In this sense, we present herein experimental insights into the synergistic relationship between the lattice position and oxidation state of tungsten ions inside a TiO2 lattice, and the respective nature of the created defect states. Consequently, a roadmap to tune the defect states in anodically-fabricated, ultrathin-walled W-doped TiO2 nanotubes is proposed. Annealing the nanotubes in different gas streams enabled the engineering of defects in such structures, as confirmed by XRD and XPS measurements. While annealing under hydrogen stream resulted in the formation of abundant Wn+ (n < 6) ions at the interstitial sites of the TiO2 lattice, oxygen- and air-annealing induced W6+ ions at substitutional sites. EIS and Mott-Schottky analyses indicated the formation of deep-natured trap states in the hydrogen-annealed samples, and predominantly shallow donating defect states in the oxygen- and air-annealed samples. Consequently, the photocatalytic performance of the latter was significantly higher than those of the hydrogen-annealed counterparts. Upon increasing the W content, photoelectrochemical performance deteriorated due to the formation of WO3 crystallites that hindered charge transfer through the photoanode, as evident from the structural and chemical characterization. To this end, this study validates the previous theoretical predictions on the detrimental effect of interstitial W ions. In addition, it sheds light on the importance of defect states and their nature for tuning the photoelectrochemical performance of the investigated materials.
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Affiliation(s)
- Ali A Abdelhafiz
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332, USA
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25
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El-Sayed MA, Schatz GC. Virtual Issue in Memory of Ahmed Zewail. J Phys Chem B 2018; 120:10043-10045. [PMID: 27696876 DOI: 10.1021/acs.jpcb.6b08647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Geng J, Aioub M, El-Sayed MA, Barry BA. An Ultraviolet Resonance Raman Spectroscopic Study of Cisplatin and Transplatin Interactions with Genomic DNA. J Phys Chem B 2017; 121:8975-8983. [PMID: 28925698 DOI: 10.1021/acs.jpcb.7b08156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ultraviolet resonance Raman (UVRR) spectroscopy is a label-free method to define biomacromolecular interactions with anticancer compounds. Using UVRR, we describe the binding interactions of two Pt(II) compounds, cisplatin (cis-diamminedichloroplatinum(II)) and its isomer, transplatin, with nucleotides and genomic DNA. Cisplatin binds to DNA and other cellular components and triggers apoptosis, whereas transplatin is clinically ineffective. Here, a 244 nm UVRR study shows that purine UVRR bands are altered in frequency and intensity when mononucleotides are treated with cisplatin. This result is consistent with previous suggestions that purine N7 provides the cisplatin-binding site. The addition of cisplatin to DNA also causes changes in the UVRR spectrum, consistent with binding of platinum to purine N7 and disruption of hydrogen-bonding interactions between base pairs. Equally important is that transplatin treatment of DNA generates similar UVRR spectral changes, when compared to cisplatin-treated samples. Kinetic analysis, performed by monitoring decreases of the 1492 cm-1 band, reveals biphasic kinetics and is consistent with a two-step binding mechanism for both platinum compounds. For cisplatin-DNA, the rate constants (6.8 × 10-5 and 6.5 × 10-6 s-1) are assigned to the formation of monofunctional adducts and to bifunctional, intrastrand cross-linking, respectively. In transplatin-DNA, there is a 3.4-fold decrease in the rate constant of the slow phase, compared with the cisplatin samples. This change is attributed to generation of interstrand, rather than intrastrand, adducts. This longer reaction time may result in increased competition in the cellular environment and account, at least in part, for the lower pharmacological efficacy of transplatin.
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Affiliation(s)
- Jiafeng Geng
- School of Chemistry and Biochemistry, ‡Parker H. Petit Institute of Bioengineering and Bioscience, and §Laser Dynamics Laboratory, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Mena Aioub
- School of Chemistry and Biochemistry, ‡Parker H. Petit Institute of Bioengineering and Bioscience, and §Laser Dynamics Laboratory, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Mostafa A El-Sayed
- School of Chemistry and Biochemistry, ‡Parker H. Petit Institute of Bioengineering and Bioscience, and §Laser Dynamics Laboratory, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Bridgette A Barry
- School of Chemistry and Biochemistry, ‡Parker H. Petit Institute of Bioengineering and Bioscience, and §Laser Dynamics Laboratory, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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Panikkanvalappil SR, Hooshmand N, El-Sayed MA. Intracellular Assembly of Nuclear-Targeted Gold Nanosphere Enables Selective Plasmonic Photothermal Therapy of Cancer by Shifting Their Absorption Wavelength toward Near-Infrared Region. Bioconjug Chem 2017; 28:2452-2460. [PMID: 28837765 DOI: 10.1021/acs.bioconjchem.7b00427] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Despite the important applications of near-infrared (NIR) absorbing nanomaterials in plasmonic photothermal therapy (PPT), their high yield synthesis and nonspecific heating during the active- and passive-targeted cancer therapeutic strategies remain challenging. In the present work, we systematically demonstrate that in situ aggregation of typical non-NIR absorbing plasmonic nanoparticles at the nuclear region of the cells could translate them into an effective NIR photoabsorber in plasmonic photothermal therapy of cancer due to a significant shift of the plasmonic absorption band to the NIR region. We evaluated the potential of nuclear-targeted AuNSs as photoabsorber at various stages of endocytosis by virtue of their inherent in situ assembling capabilities at the nuclear region of the cells, which has been considered as one of the most thermolabile structures within the cells, to selectively destruct cancer cells with minimal damage to healthy cells. Various plasmonic nanoparticles such as rods and cubes have been exploited to elucidate the role of plasmonic field coupling in assembled nanoparticles and their subsequent killing efficiency. The NIR absorbing capabilities of aggregated AuNSs have been further demonstrated both experimentally and theoretically using discrete dipolar approximation (DDA) techniques, which was in concordance with the observed results in plasmonic photothermal therapeutic studies. While the current work was able to demonstrate the utility of non-NIR absorbing plasmonic nanoparticles as a potential alternative for plasmonic photothermal therapy by inducing localized plasmonic heating at the nuclear region of the cells, these findings could potentially open up new possibilities in developing more efficient nanoparticles for efficient cancer treatment modalities.
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Affiliation(s)
- Sajanlal R Panikkanvalappil
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Nasrin Hooshmand
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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Ali MR, Farghali HA, Ali HR, Osman AH, Soliman YA, Wu Y, Ibrahim IM, Selim SA, Shin DM, El-Sayed MA. Abstract 175: Combination of plasmonic photothermal therapy with surgery applied to naturally occurring mammary tumors in canines and felines: clinical outcomes and molecular studies. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Plasmonic Photothermal Therapy (PPTT) is a cancer therapy where gold nanorods (AuNRs) are injected at the tumor site and near-infrared light (safe to bio-system) is applied to generate localized heat causing cancer cell death. PPTT is a potentially good alternative to replace traditional surgery for localized tumors. However, for large tumors (volume ≥10 cm3), PPTT could be ineffective due to an uneven distribution of injected AuNRs causing possible inhomogeneity of heat. Surgery is frequently recommended in those cases. However, it carries a high risk of cancer recurrence. For effective treatment of large tumors, we combined both PPTT and surgical resection and applied it to naturally occurring tumors in mammary glands of dogs and cats, which could realistically represent their human equivalents at the molecular level. For the experimental design, we divided the animals into three different groups. 20 cases (7 cats and 13 dogs) were all diagnosed with adenocarcinoma; the animals were monitored for 1-2 years after treatments. Group (I): three cases were solely treated by mastectomy (control group); all of them died within a few weeks. Group (II): five cases were treated with mastectomy first. Then, each tumor wound was divided into two halves, and only one half was exposed to PPTT. After treatment, two cases in this group rendered complete remission. In the other three cases, the half wound that was not exposed to PPTT had tumor recurrence causing animal death within one year. Group (III): 12 cases were treated with surgery followed by PPTT treatment. This regime showed complete remission without any recurrence for eight cases. However, four cases died 4-12 months after therapy for reasons such as pneumonia (no tumor found, based on X ray). Histopathology results showed a decrease of cancer grades before (variant grades from 1-4) and after two weeks of treatment via PPTT and surgery (grade 0). Blood tests (conducted 1 year after therapy) showed no obvious change in liver and kidney functions in groups II and III. In addition, X-ray diffraction showed no metastasis 1- 2 years after treatment. We have performed quantitative, real time-PCR analysis two weeks before and after treatment to study the expression levels of several important genes. The genes that are responsible for repairing cancer cells such as BRCA1, BRCA2, and CD163-IL-10 were significantly diminished two weeks after treatment (group III). Furthermore, tumor microenvironment cells such as tumor-associated macrophages (TAMs) were greatly altered after treatment. TAM 1, which retards tumor growth, augmented, and TAM 2, which promotes tumorigenesis, was diminished, which explains the animals’ increased survival rate. In conclusion, our study demonstrates the feasibility of applying PPTT after surgery for large tumors in dogs and cats.
Citation Format: Moustafa R. Ali, Haithem A. Farghali, Hala R. Ali, Ahmed H. Osman, Yousef A. Soliman, Yue Wu, Ibrahim M. Ibrahim, Salah A. Selim, Dong M. Shin, Mostafa A. El-Sayed. Combination of plasmonic photothermal therapy with surgery applied to naturally occurring mammary tumors in canines and felines: clinical outcomes and molecular studies [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 175. doi:10.1158/1538-7445.AM2017-175
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Affiliation(s)
| | | | - Hala R. Ali
- 2Veterinary Medicine, Cairo University, Cairo, Egypt
| | | | | | - Yue Wu
- 1Georgia Inst. of Technology, Atlanta, GA
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Affiliation(s)
- Dongchang Chen
- School
of Materials Science and Engineering, Center for Innovative Fuel Cell
and Battery Technologies, Georgia Institute of Technology, 771 Ferst
Drive, Atlanta, Georgia 30332-0245, United States
- Laser
Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0400, United States
| | - Jeng-Han Wang
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4 Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Tsung-Fu Chou
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4 Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Bote Zhao
- School
of Materials Science and Engineering, Center for Innovative Fuel Cell
and Battery Technologies, Georgia Institute of Technology, 771 Ferst
Drive, Atlanta, Georgia 30332-0245, United States
- New
Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Mostafa A. El-Sayed
- Laser
Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0400, United States
| | - Meilin Liu
- School
of Materials Science and Engineering, Center for Innovative Fuel Cell
and Battery Technologies, Georgia Institute of Technology, 771 Ferst
Drive, Atlanta, Georgia 30332-0245, United States
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Ali MRK, Wu Y, Ghosh D, Do BH, Chen K, Dawson MR, Fang N, Sulchek TA, El-Sayed MA. Nuclear Membrane-Targeted Gold Nanoparticles Inhibit Cancer Cell Migration and Invasion. ACS Nano 2017; 11:3716-3726. [PMID: 28333438 PMCID: PMC5519406 DOI: 10.1021/acsnano.6b08345] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Most cancer patients die from metastasis. Recent studies have shown that gold nanoparticles (AuNPs) can slow down the migration/invasion speed of cancer cells and suppress metastasis. Since nuclear stiffness of the cell largely decreases cell migration, our hypothesis is that targeting AuNPs to the cell nucleus region could enhance nuclear stiffness, and therefore inhibit cell migration and invasion. Our results showed that upon nuclear targeting of AuNPs, the ovarian cancer cell motilities decrease significantly, compared with nontargeted AuNPs. Furthermore, using atomic force microscopy, we observed an enhanced cell nuclear stiffness. In order to understand the mechanism of cancer cell migration/invasion inhibition, the exact locations of the targeted AuNPs were clearly imaged using a high-resolution three-dimensional imaging microscope, which showed that the AuNPs were trapped at the nuclear membrane. In addition, we observed a greatly increased expression level of lamin A/C protein, which is located in the inner nuclear membrane and functions as a structural component of the nuclear lamina to enhance nuclear stiffness. We propose that the AuNPs that are trapped at the nuclear membrane both (1) add to the mechanical stiffness of the nucleus and (2) stimulate the overexpression of lamin A/C located around the nuclear membrane, thus increasing nuclear stiffness and slowing cancer cell migration and invasion.
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Affiliation(s)
- Moustafa R. K. Ali
- Laser Dynamics Lab (LDL), School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Yue Wu
- Laser Dynamics Lab (LDL), School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Deepraj Ghosh
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, Rhode Island 02912, United States
| | - Brian H. Do
- School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Kuangcai Chen
- Department of Chemistry, Georgia State University, P.O. Box 3965, Atlanta, Georgia 30302, United States
| | - Michelle R. Dawson
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, Rhode Island 02912, United States
| | - Ning Fang
- Department of Chemistry, Georgia State University, P.O. Box 3965, Atlanta, Georgia 30302, United States
- Corresponding Authors: , ,
| | - Todd A. Sulchek
- School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- Corresponding Authors: , ,
| | - Mostafa A. El-Sayed
- Laser Dynamics Lab (LDL), School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- Corresponding Authors: , ,
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31
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Aioub M, Panikkanvalappil SR, El-Sayed MA. Platinum-Coated Gold Nanorods: Efficient Reactive Oxygen Scavengers That Prevent Oxidative Damage toward Healthy, Untreated Cells during Plasmonic Photothermal Therapy. ACS Nano 2017; 11:579-586. [PMID: 28029783 DOI: 10.1021/acsnano.6b06651] [Citation(s) in RCA: 154] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
As a minimally invasive therapeutic strategy, gold nanorod (AuNR)-based plasmonic photothermal therapy (PPT) has shown significant promise for the selective ablation of cancer cells. However, the heat stress experienced by cells during the PPT treatment produces significant amounts of reactive oxygen species (ROS), which could harm healthy, untreated tissue near the point of care by inducing irreversible damage to DNA, lipids, and proteins, potentially causing cellular dysfunction or mutation. In this study, we utilized biocompatible Pt-coated AuNRs (PtAuNRs) with different platinum shell thicknesses as an alternative to AuNRs often used for the treatment. We show that the PtAuNRs maintain the efficacy of traditional AuNRs for inducing cell death while scavenging the ROS formed as a byproduct during PPT treatment, thereby protecting healthy, untreated cells from indirect death resulting from ROS formation. The synergistic effect of PtAuNRs in effectively killing cancer cells through hyperthermia with the simultaneous removal of heat stress induced ROS during PPT was validated in vitro using cell viability and fluorescence assays. Our results suggest that the high photothermal efficiency and ROS-scavenging activity of PtAuNRs makes them ideal candidates to improve the therapeutic efficacy of PPT treatment while reducing the risk of undesired side effects due to heat-stress-induced ROS formation.
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Affiliation(s)
- Mena Aioub
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Sajanlal R Panikkanvalappil
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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32
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Jang H, Kang K, El-Sayed MA. Facile size-controlled synthesis of fucoidan-coated gold nanoparticles and cooperative anticancer effect with doxorubicin. J Mater Chem B 2017; 5:6147-6153. [DOI: 10.1039/c7tb01123g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Facile one-pot synthesis, surface modification and doxorubicin conjugation of anticancer biopolymer fucoidan coated gold nanoparticle enabled highly efficient cancer therapy through cooperative treatment feasibility.
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Affiliation(s)
- Hongje Jang
- Laser Dynamics Laboratory
- School of Chemistry and Biochemistry
- Georgia Institute of Technology
- Atlanta
- USA
| | - Kyungtae Kang
- Department of Applied Chemistry
- Kyung Hee University
- Yongin
- Republic of Korea
| | - Mostafa A. El-Sayed
- Laser Dynamics Laboratory
- School of Chemistry and Biochemistry
- Georgia Institute of Technology
- Atlanta
- USA
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33
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Ali MRK, Wu Y, Han T, Zang X, Xiao H, Tang Y, Wu R, Fernández FM, El-Sayed MA. Simultaneous Time-Dependent Surface-Enhanced Raman Spectroscopy, Metabolomics, and Proteomics Reveal Cancer Cell Death Mechanisms Associated with Gold Nanorod Photothermal Therapy. J Am Chem Soc 2016; 138:15434-15442. [DOI: 10.1021/jacs.6b08787] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Moustafa R. K. Ali
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Yue Wu
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Tiegang Han
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Xiaoling Zang
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Haopeng Xiao
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Yan Tang
- School
of Biology, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ronghu Wu
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Facundo M. Fernández
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Mostafa A. El-Sayed
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- School
of
Chemistry, King Abdul Aziz University, Jeddah 21589, Saudi Arabia
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34
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Ali HR, Ali MRK, Wu Y, Selim SA, Abdelaal HFM, Nasr EA, El-Sayed MA. Gold Nanorods as Drug Delivery Vehicles for Rifampicin Greatly Improve the Efficacy of Combating Mycobacterium tuberculosis with Good Biocompatibility with the Host Cells. Bioconjug Chem 2016; 27:2486-2492. [PMID: 27595304 DOI: 10.1021/acs.bioconjchem.6b00430] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
TB remains a challenging disease to control worldwide. Nanoparticles have been used as drug carriers to deliver high concentrations of antibiotics directly to the site of infection, reducing the duration of treatment along with any side effects of off-target toxicities after systemic exposure to the antibiotics. Herein we have developed a drug delivery platform where gold nanorods (AuNRs) are conjugated to rifampicin (RF), which is released after uptake into macrophage cells (RAW264.7). Due to the nature of the macrophage cells, the nanoparticles are actively internalized into macrophages and release RF after uptake, under the safety frame of the host cells (macrophage). AuNRs without RF conjugation exhibit obvious antimicrobial activity. Therefore, AuNRs could be a promising antimycobacterial agent and an effective delivery vehicle for the antituberculosis drug Rifampicin for use in tuberculosis therapy.
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Affiliation(s)
- Hala R Ali
- School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States.,Animal Health Research Institute (AHRI) , Department of Bacteriology and Immunology, Dokki, Giza, Egypt.,Department of Veterinary Medicine, Cairo University , Giza, Cairo, Egypt
| | - Moustafa R K Ali
- School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - Yue Wu
- School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - Salah A Selim
- Department of Veterinary Medicine, Cairo University , Giza, Cairo, Egypt
| | - Hazem F M Abdelaal
- Department of Pathobiological Sciences, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Essam A Nasr
- Veterinary Serum and Vaccine Research Institute , Bacterial Diagnostics Research Department (Tuberculosis), Abbasia, Cairo, Egypt
| | - Mostafa A El-Sayed
- School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States.,Adjunct Professor, School of Chemistry, King Abdul Aziz University , Jeddah, Saudi Arabia
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35
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Ali MRK, Ibrahim IM, Ali HR, Selim SA, El-Sayed MA. Treatment of natural mammary gland tumors in canines and felines using gold nanorods-assisted plasmonic photothermal therapy to induce tumor apoptosis. Int J Nanomedicine 2016; 11:4849-4863. [PMID: 27703351 PMCID: PMC5036785 DOI: 10.2147/ijn.s109470] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Plasmonic photothermal therapy (PPTT) is a cancer therapy in which gold nanorods are injected at the site of a tumor before near-infrared light is transiently applied to the tumor causing localized cell death. Previously, PPTT studies have been carried out on xenograft mice models. Herein, we report a study showing the feasibility of PPTT as applied to natural tumors in the mammary glands of dogs and cats, which more realistically represent their human equivalents at the molecular level. We optimized a regime of three low PPTT doses at 2-week intervals that ablated tumors mainly via apoptosis in 13 natural mammary gland tumors from seven animals. Histopathology, X-ray, blood profiles, and comprehensive examinations were used for both the diagnosis and the evaluation of tumor statuses before and after treatment. Histopathology results showed an obvious reduction in the cancer grade shortly after the first treatment and a complete regression after the third treatment. Blood tests showed no obvious change in liver and kidney functions. Similarly, X-ray diffraction showed no metastasis after 1 year of treatment. In conclusion, our study suggests the feasibility of applying the gold nanorods-PPTT on natural tumors in dogs and cats without any relapse or toxicity effects after 1 year of treatment.
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Affiliation(s)
- Moustafa R K Ali
- School of Chemistry and Biochemistry, Georgia Institute of Technology, and Laser Dynamics Laboratory, Atlanta, GA, USA
| | - Ibrahim M Ibrahim
- Department of Veterinary Medicine, Cairo University, Giza, Cairo, Egypt
| | - Hala R Ali
- Department of Veterinary Medicine, Cairo University, Giza, Cairo, Egypt
- Department of Bacteriology and Immunology, Animal Health Research Institute (AHRI), Dokki, Giza, Egypt
| | - Salah A Selim
- Department of Veterinary Medicine, Cairo University, Giza, Cairo, Egypt
| | - Mostafa A El-Sayed
- School of Chemistry and Biochemistry, Georgia Institute of Technology, and Laser Dynamics Laboratory, Atlanta, GA, USA
- School of Chemistry, King Abdul Aziz University, Jeddah, Saudi Arabia
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36
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Ali MR, Ali HR, Rankin CR, El-Sayed MA. Targeting heat shock protein 70 using gold nanorods enhances cancer cell apoptosis in low dose plasmonic photothermal therapy. Biomaterials 2016; 102:1-8. [DOI: 10.1016/j.biomaterials.2016.06.017] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 06/03/2016] [Accepted: 06/04/2016] [Indexed: 01/12/2023]
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Rahman MA, Ali MRK, Zhao Z, Chen GZ, El-Sayed MA, Shin DM. Abstract 3903: Optimizing the antitumor efficacy of AuNR-assisted plasmonic photothermal therapy and its molecular impact. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-3903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Plasmonic gold nanorods (AuNRs) are very promising for biomedical applications because of their strongly enhanced radiation (e.g. absorption and scattering) and non-radioactive photothermal properties due to surface plasmon resonance. In plasmonic photothermal therapy (PPTT), AuNRs absorb near infrared (NIR) laser and induce localized heat (i.e., hyperthermia) which can promote tumor tissue ablation. However, the lack of comprehensive studies to improve the efficiency of AuNRs has hindered their application. The objectives of this study were to perform a systematic analysis to optimize AuNR-PPTT based on different sizes, formulation and concentration along with various laser powers for cancer therapy in vitro and in vivo. We used AuNRs of sizes 26×6 nm and 72×19 nm with concentrations of 2.5, 5 and 10 nM, followed by 2 min of 0.5, 1, 1.78 W/cm2 NIR 808 nm diode laser exposure both in vitro and in vivo. For in vitro studies, we studied several head and neck squamous cell carcinoma (HNSCC) cell lines. We conducted an in vivo antitumor efficacy study in nude mice bearing human HNSCC Tu686 xenograft tumors with three formulations of AuNRs (72×19 nm and 26×6 nm with or without rifampicin (Rf) conjugation).Single dose intratumoral injection of 5 nM and 10 nM AuNRs (26×6 nm), followed by 2 min of 1.78 W/cm2 NIR laser exposure inhibited tumor growth and the 2.5 nM dose led to moderate antitumor efficacy. However, we observed severe skin burning at higher concentrations. In contrast, AuNRs (72×19nm) had no remarkable antitumor efficacy at high laser power. Impressively, small AuNR-conjugated Rf (AuNR-Rf) accumulated AuNRs inside the cell and had very significant antitumor efficacy (p<0.05) without any skin burning at 2.5 nM concentration. We confirmed our observations by immunohistochemistry staining of proliferation marker Ki67 in tumor tissues. To understand the molecular impact, we applied the optimized treatment in vitro. AuNR-Rf was able to induce apoptosis in 24 hours of treatment and decreased cell viability, as supported by immunoblotting of PARP and caspase 3 cleavage. In addition, we found that mutant p53 was completely abolished in AuNR-PPTT treatment. Overall, we have demonstrated that 2.5 nM AuNR with 1.78 W/cm2 NIR laser has no remarkable toxicities and optimal antitumor efficacy was observed by conjugation with Rf. In future studies, we will explore potential novel biomarkers by next generation sequencing (NGS) in mouse tumor tissues to determine the response to AuNR-PPTT. (This study supported by U01CA151802).
[M.A.R. and M.R.K.A. contributed equally to this work.]
Citation Format: Mohammad Aminur Rahman, Moustafa R. K. Ali, Zhixiang Zhao, Georgia Z. Chen, Mostafa A. El-Sayed, Dong M. Shin. Optimizing the antitumor efficacy of AuNR-assisted plasmonic photothermal therapy and its molecular impact. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 3903.
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Affiliation(s)
| | | | - Zhixiang Zhao
- 1Emory University Winship Cancer Institute, Atlanta, GA
| | | | | | - Dong M. Shin
- 1Emory University Winship Cancer Institute, Atlanta, GA
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38
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Chen D, Xiong X, Zhao B, Mahmoud MA, El-Sayed MA, Liu M. Probing Structural Evolution and Charge Storage Mechanism of NiO 2H x Electrode Materials using In Operando Resonance Raman Spectroscopy. Adv Sci (Weinh) 2016; 3:1500433. [PMID: 27812474 PMCID: PMC5067601 DOI: 10.1002/advs.201500433] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 01/31/2016] [Indexed: 05/29/2023]
Abstract
In operando resonance Raman spectroscopy suggests quantitative correlation between phonon band properties and the amount of charge storage of high-energy density NiO2H x battery/pseudocapacitive material. Comparing the spectroscopic evolution using different electrolytes reveals the contributions of breaking/formation of O-H bonds and insertion/extraction of cations to electrochemical charge storage of NiO2H x .
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Affiliation(s)
- Dongchang Chen
- School of Materials Science and Engineering Center for Innovative Fuel Cell and Battery Technologies Georgia Institute of Technology 771 Ferst Drive Atlanta GA 30332-0245 USA; Laser Dynamics Laboratory School of Chemistry and Biochemistry Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332-0400 USA
| | - Xunhui Xiong
- School of Materials Science and Engineering Center for Innovative Fuel Cell and Battery Technologies Georgia Institute of Technology 771 Ferst Drive Atlanta GA 30332-0245 USA
| | - Bote Zhao
- School of Materials Science and Engineering Center for Innovative Fuel Cell and Battery Technologies Georgia Institute of Technology 771 Ferst Drive Atlanta GA 30332-0245 USA
| | - Mahmoud A Mahmoud
- Laser Dynamics Laboratory School of Chemistry and Biochemistry Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332-0400 USA
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory School of Chemistry and Biochemistry Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332-0400 USA
| | - Meilin Liu
- School of Materials Science and Engineering Center for Innovative Fuel Cell and Battery Technologies Georgia Institute of Technology 771 Ferst Drive Atlanta GA 30332-0245 USA
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39
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Panikkanvalappil SR, James M, Hira SM, Mobley J, Jilling T, Ambalavanan N, El-Sayed MA. Hyperoxia Induces Intracellular Acidification in Neonatal Mouse Lung Fibroblasts: Real-Time Investigation Using Plasmonically Enhanced Raman Spectroscopy. J Am Chem Soc 2016; 138:3779-88. [DOI: 10.1021/jacs.5b13177] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Sajanlal R. Panikkanvalappil
- Laser
Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Masheika James
- Department
of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama 35233, United States
| | - Steven M. Hira
- Laser
Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - James Mobley
- Department
of Surgery, University of Alabama at Birmingham, Birmingham, Alabama 35233, United States
| | - Tamas Jilling
- Department
of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama 35233, United States
| | - Namasivayam Ambalavanan
- Department
of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama 35233, United States
| | - Mostafa A. El-Sayed
- Laser
Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- Department
of Chemistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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40
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Ghuman KK, Hoch LB, Szymanski P, Loh JYY, Kherani NP, El-Sayed MA, Ozin GA, Singh CV. Photoexcited Surface Frustrated Lewis Pairs for Heterogeneous Photocatalytic CO2 Reduction. J Am Chem Soc 2016; 138:1206-14. [DOI: 10.1021/jacs.5b10179] [Citation(s) in RCA: 160] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kulbir Kaur Ghuman
- Department
of Materials Science and Engineering, University of Toronto, 184 College
Street, Suite 140, Toronto, Ontario M5S 3E4, Canada
| | - Laura B. Hoch
- Department
of Chemistry, University of Toronto, 80 St. George Street, Rm 326, Toronto, Ontario M5S 3E4, Canada
| | - Paul Szymanski
- Laser
Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0400, United States
| | - Joel Y. Y. Loh
- The
Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, Ontario M5S 3G4, Canada
| | - Nazir P. Kherani
- Department
of Materials Science and Engineering, University of Toronto, 184 College
Street, Suite 140, Toronto, Ontario M5S 3E4, Canada
- The
Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, Ontario M5S 3G4, Canada
| | - Mostafa A. El-Sayed
- Laser
Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0400, United States
| | - Geoffrey A. Ozin
- Department
of Chemistry, University of Toronto, 80 St. George Street, Rm 326, Toronto, Ontario M5S 3E4, Canada
| | - Chandra Veer Singh
- Department
of Materials Science and Engineering, University of Toronto, 184 College
Street, Suite 140, Toronto, Ontario M5S 3E4, Canada
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Aioub M, El-Sayed MA. A Real-Time Surface Enhanced Raman Spectroscopy Study of Plasmonic Photothermal Cell Death Using Targeted Gold Nanoparticles. J Am Chem Soc 2016; 138:1258-64. [DOI: 10.1021/jacs.5b10997] [Citation(s) in RCA: 162] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mena Aioub
- Laser Dynamics Laboratory,
School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Mostafa A. El-Sayed
- Laser Dynamics Laboratory,
School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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Panikkanvalappil SR, Hira SM, El-Sayed MA. Elucidation of ultraviolet radiation-induced cell responses and intracellular biomolecular dynamics in mammalian cells using surface-enhanced Raman spectroscopy. Chem Sci 2015; 7:1133-1141. [PMID: 29910869 PMCID: PMC5975792 DOI: 10.1039/c5sc03817k] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 11/05/2015] [Indexed: 12/16/2022] Open
Abstract
Surface-enhanced Raman spectroscopy has been used to elucidate biomolecular dynamics on the response of mammalian cells towards UV light irradiation.
Fingerprinting biochemical changes associated with cellular responses to external stimuli can provide vital information on the dynamics of biological processes and their defense mechanisms. In this study, surface-enhanced Raman spectroscopy (SERS) has been used to elucidate biomolecular dynamics on the response of healthy and cancerous cells towards ultraviolet (UV) light irradiation at the cellular level in real-time. We have identified a number of physiochemical damages to proteins, especially to the chemical structure of the sulfur and aromatic amino acid containing moieties, as well as changes in secondary structure. Furthermore, we found that continuous exposure of short wave UV-C light (254 nm) to living cells can photolytically damage intracellular proteins and can completely arrest nanoparticle transport and trigger apoptosis. However, under similar conditions, this was not observed when the cells were exposed to long wave UV-A light (365 nm). These biomolecular events were probed in real-time using SERS and dark-field (DF) imaging. Specifically, this technique has been utilized for the real-time evaluation of a unique cellular defense mechanism in cancer cells towards UV exposure. Our technique provides a powerful approach to understand the mechanisms of UV light-triggered cell death, protein dynamics, and enhanced cell repair and defense machinery within cancer cells through actively monitoring molecular vibrations.
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Affiliation(s)
- Sajanlal R Panikkanvalappil
- Laser Dynamics Laboratory , School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA .
| | - Steven M Hira
- Laser Dynamics Laboratory , School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA .
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory , School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA . .,King Abdulaziz University , Department of Chemistry , Jeddah 22254 , Saudi Arabia
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43
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Bordley JA, Hooshmand N, El-Sayed MA. The Coupling between Gold or Silver Nanocubes in Their Homo-Dimers: A New Coupling Mechanism at Short Separation Distances. Nano Lett 2015; 15:3391-3397. [PMID: 25844929 DOI: 10.1021/acs.nanolett.5b00734] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Using the DDA method, we investigated the near-field coupling between two excited Au or Ag 42 nm nanocubes in a face-to-face dimer configuration at small separation distances where the exponential coupling behavior distinctly changes. This could be due to the failure of the dipole approximation at short distances or a change in the electromagnetic field distribution between the adjacent monomers. A detailed calculation of the plasmonic field distribution strongly suggests that the latter mechanism is responsible for the failure of the expected exponential coupling behavior at small separation distances. The results suggest that the observed optical properties of the pair of Au or Ag nanocubes separated by distances larger than 6 nm, result from the electromagnetic coupling between the oscillating dipoles at the corners of the adjacent facets of the nanocubes. At separations smaller than 6 nm, the distribution of the plasmonic dipoles along both the facets and the corners of the adjacent monomers control the plasmonic spectra and the distance dependent optical properties of the dimer.
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Affiliation(s)
- Justin A Bordley
- †Department of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Nasrin Hooshmand
- †Department of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Mostafa A El-Sayed
- †Department of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- ‡King Abdulaziz University, Department of Chemistry, Jeddah 22254, Saudi Arabia
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44
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Mahmoud MA, O'Neil D, El-Sayed MA. Correction to Shape- and symmetry-dependent mechanical properties of metallic gold and silver on the nanoscale. Nano Lett 2015; 15:2764. [PMID: 25789787 DOI: 10.1021/acs.nanolett.5b01060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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45
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König TAF, Ledin PA, Russell M, Geldmeier JA, Mahmoud MA, El-Sayed MA, Tsukruk VV. Silver nanocube aggregation gradient materials in search for total internal reflection with high phase sensitivity. Nanoscale 2015; 7:5230-5239. [PMID: 25707955 DOI: 10.1039/c4nr06430e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We fabricated monolayer coatings of a silver nanocube aggregation to create a step-wise optical strip by applying different surface pressures during slow Langmuir-Blodgett deposition. The varying amount of randomly distributed nanocube aggregates with different surface coverages in gradient manner due to changes in surface pressure allows for continuous control of the polarization sensitive absorption of the incoming light over a broad optical spectrum. Optical characterization under total internal reflection conditions combined with electromagnetic simulations reveal that the broadband light absorption depends on the relative orientation of the nanoparticles to the polarization of the incoming light. By using computer simulations, we found that the electric field vector of the s-polarized light interacts with the different types of silver nanocube aggregations to excite different plasmonic resonances. The s-polarization shows dramatic changes of the plasmonic resonances at different angles of incidence (shift of 64 nm per 10° angle of incidence). With a low surface nanocube coverage (from 5% to 20%), we observed a polarization-selective high absorption of 80% (with an average 75%) of the incoming light over a broad optical range in the visible region from 400 nm to 700 nm. This large-area gradient material with location-dependent optical properties can be of particular interest for broadband light absorption, phase-sensitive sensors, and imaging.
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Affiliation(s)
- Tobias A F König
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA.
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46
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Szymanski P, Mahmoud MA, O'Neil D, Garlyyev B, El-Sayed MA. Electronic and vibrational dynamics of hollow au nanocages embedded in cu2 o shells. Photochem Photobiol 2015; 91:599-606. [PMID: 25682692 DOI: 10.1111/php.12432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 02/07/2015] [Indexed: 11/30/2022]
Abstract
We have synthesized hollow Au nanocages embedded within thick porous shells of cuprous oxide (Cu2 O). The shell causes a significant redshift of the localized surface plasmon resonance of Au into the near-IR. Electron-phonon coupling in the Au nanocage is 3-6 times faster in the core-shell structure due to the higher thermal conductivity of Cu2 O compared to water. Coherent phonon oscillations within the Au lattice are characterized by a breathing mode of the entire structure for both bare and core-shell nanocages, an assignment made through the use of structural mechanics simulations. The experimental frequencies are obtained through simulations by selectively applying a force to the shell of the core-shell structure. We interpret this as rapid thermal expansion of the gold leading to a mechanical force that acts on the shell.
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Affiliation(s)
- Paul Szymanski
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
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Ledin PA, Russell M, Geldmeier JA, Tkachenko IM, Mahmoud MA, Shevchenko V, El-Sayed MA, Tsukruk VV. Light-responsive plasmonic arrays consisting of silver nanocubes and a photoisomerizable matrix. ACS Appl Mater Interfaces 2015; 7:4902-4912. [PMID: 25671557 DOI: 10.1021/am508993z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report on the synthesis of novel branched organic-inorganic azo-polyhedral oligomeric silsesquioxane (POSS) conjugates (Azo-POSS) and their use as a stable active medium to induce reversible plasmonic modulations of embedded metal nanostructures. A dense monolayer of silver nanocubes was deposited on a quartz substrate using the Langmuir-Blodgett technique and subsequently coated with an ultrathin Azo-POSS layer. The reversible light-induced photoisomerization between the trans and cis states of the azobenzene-terminated branched POSS material results in significant changes in the refractive index (up to 0.17) at a wavelength of 380 nm. We observed that the pronounced and reversible change in the surrounding refractive index results in a corresponding hypsochromic plasmonic shift of 6 nm in the plasmonic band of the embedded silver nanocubes. The reversible tuning of the plasmonic modes of noble-metal nanostructures using a variable-refractive-index medium opens up the possibility of fabricating photoactive, hybrid, ultrathin coatings with robust, real-time, photoinitiated responses for prospective applications in photoactive materials that can be reversibly tuned by light illumination.
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Affiliation(s)
- Petr A Ledin
- School of Materials Science and Engineering and §Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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48
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Mahmoud MA, Garlyyev B, El-Sayed MA. Controlling the Catalytic Efficiency on the Surface of Hollow Gold Nanoparticles by Introducing an Inner Thin Layer of Platinum or Palladium. J Phys Chem Lett 2014; 5:4088-4094. [PMID: 26278937 DOI: 10.1021/jz502071v] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The efficiency of heterogeneous catalysis of electron-transfer reactions on the surface of gold nanoshells was changed by adding an inner platinum or palladium nanoshell in the double-shell nanocatalysts. The reduction of 4-nitrothiophenol (4NTP) by borohydride was studied as a model reaction. To confirm the heterogeneous catalytic mechanism, the nanocatalysts were assembled into a monolayer on the surface of a quartz substrate using the Langmuir-Blodgett technique, and the 4NTP was allowed to bind to the surface of gold through a strong thiol bond. The stages of the reduction reaction of 4NTP on the surface of gold were successfully followed by time-resolved surface-enhanced Raman spectroscopy. Palladium was found to increase the catalytic efficiency of the gold surface due to the presence of a new Fermi level of the palladium-gold alloy, while platinum decreased its catalytic efficiency due to the electron-withdrawing effect of platinum atoms, which resulted from the difference in their electrochemical reduction potentials.
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Affiliation(s)
- Mahmoud A Mahmoud
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Batyr Garlyyev
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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49
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Panikkanvalappil S, Hira S, Mahmoud MA, El-Sayed MA. Unraveling the biomolecular snapshots of mitosis in healthy and cancer cells using plasmonically-enhanced Raman spectroscopy. J Am Chem Soc 2014; 136:15961-8. [PMID: 25330058 PMCID: PMC4235372 DOI: 10.1021/ja506289u] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Indexed: 12/24/2022]
Abstract
Owing to the dynamic and complex nature of mitosis, precise and timely executions of biomolecular events are critical for high fidelity cell division. In this context, visualization of such complex events at the molecular level can provide vital information on the biomolecular processes in abnormal cells. Here, we explored the plasmonically enhanced light scattering properties of functionalized gold nanocubes (AuNCs) together with surface-enhanced Raman spectroscopy (SERS) to unravel the complex and dynamic biological processes involved in mitosis of healthy and cancerous cells from its molecular perspectives. By monitoring various stages of mitosis using SERS, we noticed that relatively high rate of conversion of mitotic proteins from their α-helix structure to β-sheet conformation is likely in the cancer cells during meta-, ana-, and telophases. Unique biochemical modifications to the lipid and amino acid moieties, associated with the observed protein conformational modifications, were also identified. However, in healthy cells, the existence of proteins in their β conformation was momentary and was largely in the α-helix form. The role of abnormal conformational modifications of mitotic proteins on the development of anomalous mitotic activities was further confirmed by looking at plasmonic nanoparticle-induced cytokinesis failure in cancer cells. Our findings illustrate the vast possibilities of SERS in real-time tracking of complex, subtle, and momentary modifications of biomolecules in live cells, which could provide new insights to the role of protein conformation dynamics during mitosis on the development of cancer and many other diseases.
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Affiliation(s)
- Sajanlal
R. Panikkanvalappil
- Laser Dynamics Laboratory,
School of Chemistry and Biochemistry, Georgia
Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Steven
M. Hira
- Laser Dynamics Laboratory,
School of Chemistry and Biochemistry, Georgia
Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Mahmoud A. Mahmoud
- Laser Dynamics Laboratory,
School of Chemistry and Biochemistry, Georgia
Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Mostafa A. El-Sayed
- Laser Dynamics Laboratory,
School of Chemistry and Biochemistry, Georgia
Institute of Technology, Atlanta, Georgia 30332-0400, United States
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50
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Mahmoud MA, El-Sayed MA. Enhancing Catalytic Efficiency of Hollow Palladium Nanoparticles by Photothermal Heating of Gold Nanoparticles Added to the Cavity: Palladium-Gold Nanorattles. ChemCatChem 2014. [DOI: 10.1002/cctc.201402644] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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