1
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Cui Y, Fan S, Zhai Y, Liu Y, Li J, Hu J, Wang L. "Turn-on" and pinhole-free ultrathin core-shell Au@SiO 2 nanoparticle-based metal-enhanced fluorescent (MEF) chemodosimeter for Hg 2. NANOSCALE ADVANCES 2024; 6:2319-2327. [PMID: 38694453 PMCID: PMC11059484 DOI: 10.1039/d3na00746d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/16/2023] [Indexed: 05/04/2024]
Abstract
This study reports a metal-enhanced fluorescence chemodosimeter for highly sensitive detection of Hg2+ ions. Silica-coated Au nanoparticles (Au@SiO2 NPs) with a pinhole-free 4-5 nm shell were synthesized and functionalized with a monolayer of turn-on fluorescent probes. Compared to other organic fluorescent probes suffering from poor biocompatibility and detection limits, this design of a monolayer of turn-on fluorescent probes immobilized on the Au@SiO2 NPs with a pinhole-free 4-5 nm shell avoids fluorescence quenching and allows the fluorescent probe within the field of the inner Au NPs to experience metal-enhanced fluorescence. With this design, the chemodosimeter permits fluorescence emission in the presence of Hg2+ ions, because they trigger the ring-opening reaction of the fluorescent probe immobilized on the Au@SiO2 NPs. Additionally, the fluorescent probe is distanced by the thin SiO2 shell from directly attaching to the metallic Au NPs, which not only avoids fluorescence quenching but allows the fluorescent probe within the long-ranged field of the inner Au NPs to experience metal-enhanced fluorescence. As a result, the detection limit for the chemodosimeter can reach up to 5.0 × 10-11 M, nearly two orders of magnitude higher than that achieved for the free fluorescent probe. We also demonstrate the acquisition of images of Hg2+ in HTC116 cells and zebrafish using a simple fluorescence confocal imaging technique. The fluorescence response results for HTC116 cells and zebrafish show that the probes can permeate into cells and organisms. Considering the availability of the many organic fluorescent probes that have been designed, the current designed metal-enhanced fluorescence chemodosimeter holds great potential for fluorescence detection of diverse species and fluorescence imaging.
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Affiliation(s)
- Ying Cui
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University Hengyang 421001 PR China
| | - Shanji Fan
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China Hengyang 421000 China
| | - Yunran Zhai
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Yingjie Liu
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China Hengyang 421000 China
| | - Junhua Li
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University Hengyang 421001 PR China
| | - Jiawen Hu
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Lijia Wang
- Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center Hangzhou Zhejiang 310052 China
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2
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Greaves GE, Allison L, Machado P, Morfill C, Fleck RA, Porter AE, Phillips CC. Infrared nanoimaging of neuronal ultrastructure and nanoparticle interaction with cells. NANOSCALE 2024; 16:6190-6198. [PMID: 38445876 PMCID: PMC10956966 DOI: 10.1039/d3nr04948e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 02/28/2024] [Indexed: 03/07/2024]
Abstract
Here we introduce scattering-type scanning near-field optical microscopy (s-SNOM) as a novel tool for nanoscale chemical-imaging of sub-cellular organelles, nanomaterials and of the interactions between them. Our setup uses a tuneable mid-infrared laser and a sharp scanning probe to image at a resolution substantially surpassing the diffraction limit. The laser can be tuned to excite vibrational modes of functional groups in biomolecules, (e.g. amide moieties), in a way that enables direct chemical mapping without the need for labelling. We, for the first time, chemically image neuronal ultrastructure, identify neuronal organelles and sub-organelle structures as small as 10 nm and validate our findings using transmission electron microscopy (TEM). We produce chemical and morphological maps of neurons treated with gold nanospheres and characterize nanoparticle size and intracellular location, and their interaction with the plasma membrane. Our results show that the label-free nature of s-SNOM means it has a 'true' chemical resolution of up to 20 nm which can be further improved. We argue that it offers significant potential in nanomedicine for nanoscale chemical imaging of cell ultrastructure and the subcellular distribution of nanomaterials within tissues.
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Affiliation(s)
- George E Greaves
- Experimental Solid State Group, Department of Physics, Imperial College London, SW7 2BW, UK.
| | - Leanne Allison
- Centre for Ultrastructural Imaging, Kings College London, SE1 1UL, UK
| | - Pedro Machado
- Centre for Ultrastructural Imaging, Kings College London, SE1 1UL, UK
| | - Corinne Morfill
- Department of Materials and London Centre for Nanotechnology, Imperial College London, SW7 2AZ, UK
| | - Roland A Fleck
- Centre for Ultrastructural Imaging, Kings College London, SE1 1UL, UK
- Randall Centre for Cell and Molecular Biophysics, Kings College London, SE1 1YR, UK
| | - Alexandra E Porter
- Department of Materials and London Centre for Nanotechnology, Imperial College London, SW7 2AZ, UK
| | - Chris C Phillips
- Experimental Solid State Group, Department of Physics, Imperial College London, SW7 2BW, UK.
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3
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Chacko N, Motiei M, Suryakant JS, Firer M, Ankri R. Au nanodyes as enhanced contrast agents in wide field near infrared fluorescence lifetime imaging. DISCOVER NANO 2024; 19:18. [PMID: 38270794 PMCID: PMC10810770 DOI: 10.1186/s11671-024-03958-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Abstract
The near-infrared (NIR) range of the electromagnetic (EM) spectrum offers a nearly transparent window for imaging tissue. Despite the significant potential of NIR fluorescence-based imaging, its establishment in basic research and clinical applications remains limited due to the scarcity of fluorescent molecules with absorption and emission properties in the NIR region, especially those suitable for biological applications. In this study, we present a novel approach by combining the widely used IRdye 800NHS fluorophore with gold nanospheres (GNSs) and gold nanorods (GNRs) to create Au nanodyes, with improved quantum yield (QY) and distinct lifetimes. These nanodyes exhibit varying photophysical properties due to the differences in the separation distance between the dye and the gold nanoparticles (GNP). Leveraging a rapid and highly sensitive wide-field fluorescence lifetime imaging (FLI) macroscopic set up, along with phasor based analysis, we introduce multiplexing capabilities for the Au nanodyes. Our approach showcases the ability to differentiate between NIR dyes with very similar, short lifetimes within a single image, using the combination of Au nanodyes and wide-field FLI. Furthermore, we demonstrate the uptake of Au nanodyes by mineral-oil induced plasmacytomas (MOPC315.bm) cells, indicating their potential for in vitro and in vivo applications.
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Affiliation(s)
- Neelima Chacko
- Department of Physics, Faculty of Natural Science, Ariel University, 40700, Ariel, Israel
| | - Menachem Motiei
- Faculty of Engineering, The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Jadhav Suchita Suryakant
- Department of Chemical Engineering, Faculty of Engineering, Ariel University, 40700, Ariel, Israel
| | - Michael Firer
- Department of Chemical Engineering, Faculty of Engineering, Ariel University, 40700, Ariel, Israel
| | - Rinat Ankri
- Department of Physics, Faculty of Natural Science, Ariel University, 40700, Ariel, Israel.
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4
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Yin L, You T, Arslan M, El-Seedi HR, Guo Z, Zou X, Cai J. Dual-layers Raman reporter-tagged Au@Ag combined with core-satellite assemblies for SERS detection of Zearalenone. Food Chem 2023; 429:136834. [PMID: 37453336 DOI: 10.1016/j.foodchem.2023.136834] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 06/18/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
Zearalenone (ZEN) is a prevalent mycotoxin identified in corn. A SERS-based immunosensor by constructing core-satellite assemblies was developed for ZEN detection. ZEN monoclonal antibody modified gold nanostars (AuNSs) were fabricated as the capture probe (core). The Raman signal probes (satellites) utilized ZEN antigen linked to the core-shell structures loaded with two layers of Raman reporter molecules (AuMBA@AgMBANPs). The coupling between AuNSs and AuMBA@AgMBANPs can produce a poweful electromagnetic field, thus considerably amplifying the Raman signal. The detection range of ZEN for corn samples under the optimal conditions was 5 ∼ 400 μg/kg with a LOD of 3 μg/kg, which completely satisfying the requirement of maximum residual level (60 μg/kg). Moreover, the proposed SERS method was consistent with the HPLC-FLD method for the detection of ZEN in naturally contaminated corn samples (90.58% ∼ 105.29%). Conclusively, fabricated immunosensor with exceptional sensitivity and specificity broaden the application of SERS in mycotoxin detection.
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Affiliation(s)
- Limei Yin
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Tianyan You
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Muhammad Arslan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Hesham R El-Seedi
- Pharmacognosy Group, Department of Pharmaceutical Biosciences, BMC, Uppsala University, Box 591, SE-751 24 Uppsala, Sweden
| | - Zhiming Guo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing (Jiangsu University), Jiangsu Education Department, Zhenjiang 212013, China
| | - Xiaobo Zou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing (Jiangsu University), Jiangsu Education Department, Zhenjiang 212013, China
| | - Jianrong Cai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
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5
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Theodorou IG, Mpekris F, Papagiorgis P, Panagi M, Kalli M, Potamiti L, Kyriacou K, Itskos G, Stylianopoulos T. Gold Nanobipyramids for Near-Infrared Fluorescence-Enhanced Imaging and Treatment of Triple-Negative Breast Cancer. Cancers (Basel) 2023; 15:3693. [PMID: 37509354 PMCID: PMC10378199 DOI: 10.3390/cancers15143693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
There is an imminent need for novel strategies for the diagnosis and treatment of aggressive triple-negative breast cancer (TNBC). Cell-targeted multifunctional nanomaterials hold great potential, as they can combine precise early-stage diagnosis with local therapeutic delivery to specific cell types. In this study, we used mesoporous silica (MS)-coated gold nanobipyramids (MS-AuNBPs) for fluorescence imaging in the near-infrared (NIR) biological window, along with targeted TNBC treatment. Our MS-AuNBPs, acting partly as light amplification components, allow considerable metal-enhanced fluorescence for a NIR dye conjugated to their surfaces compared to the free dye. Fluorescence analysis confirms a significant increase in the dye's modified quantum yield, indicating that MS-AuNBPs can considerably increase the brightness of low-quantum-yield NIR dyes. Meanwhile, we tested the chemotherapeutic efficacy of MS-AuNBPs in TNBC following the loading of doxorubicin within the MS pores and functionalization to target folate receptor alpha (FRα)-positive cells. We show that functionalized particles target FRα-positive cells with significant specificity and have a higher potency than free doxorubicin. Finally, we demonstrate that FRα-targeted particles induce stronger antitumor effects and prolong overall survival compared to the clinically applied non-targeted nanotherapy, Doxil. Together with their excellent biocompatibility measured in vitro, this study shows that MS-AuNBPs are promising tools to detect and treat TNBCs.
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Affiliation(s)
- Ioannis G Theodorou
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, Cyprus
| | - Fotios Mpekris
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, Cyprus
| | - Paris Papagiorgis
- Experimental Condensed Matter Physics Laboratory, Department of Physics, University of Cyprus, Nicosia 1678, Cyprus
| | - Myrofora Panagi
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, Cyprus
| | - Maria Kalli
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, Cyprus
| | - Louiza Potamiti
- Department of Cancer Genetics, Therapeutics and Ultrastructural Pathology, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus
| | - Kyriacos Kyriacou
- Department of Cancer Genetics, Therapeutics and Ultrastructural Pathology, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus
| | - Grigorios Itskos
- Experimental Condensed Matter Physics Laboratory, Department of Physics, University of Cyprus, Nicosia 1678, Cyprus
| | - Triantafyllos Stylianopoulos
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 1678, Cyprus
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6
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Morfill C, Pankratova S, Machado P, Fernando NK, Regoutz A, Talamona F, Pinna A, Klosowski M, Wilkinson RJ, Fleck RA, Xie F, Porter AE, Kiryushko D. Nanostars Carrying Multifunctional Neurotrophic Dendrimers Protect Neurons in Preclinical In Vitro Models of Neurodegenerative Disorders. ACS APPLIED MATERIALS & INTERFACES 2022; 14:47445-47460. [PMID: 36218307 PMCID: PMC9614720 DOI: 10.1021/acsami.2c14220] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 09/26/2022] [Indexed: 05/06/2023]
Abstract
A challenge in neurology is the lack of efficient brain-penetrable neuroprotectants targeting multiple disease mechanisms. Plasmonic gold nanostars are promising candidates to deliver standard-of-care drugs inside the brain but have not been trialed as carriers for neuroprotectants. Here, we conjugated custom-made peptide dendrimers (termed H3/H6), encompassing motifs of the neurotrophic S100A4-protein, onto star-shaped and spherical gold nanostructures (H3/H6-AuNS/AuNP) and evaluated their potential as neuroprotectants and interaction with neurons. The H3/H6 nanostructures crossed a model blood-brain barrier, bound to plasma membranes, and induced neuritogenesis with the AuNS, showing higher potency/efficacy than the AuNP. The H3-AuNS/NP protected neurons against oxidative stress, the H3-AuNS being more potent, and against Parkinson's or Alzheimer's disease (PD/AD)-related cytotoxicity. Unconjugated S100A4 motifs also decreased amyloid beta-induced neurodegeneration, introducing S100A4 as a player in AD. Using custom-made dendrimers coupled to star-shaped nanoparticles is a promising route to activate multiple neuroprotective pathways and increase drug potency to treat neurodegenerative disorders.
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Affiliation(s)
- Corinne Morfill
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Stanislava Pankratova
- Department
of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen2200N, Denmark
- Comparative
Paediatrics and Nutrition, Department of Veterinary and Animal Sciences,
Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen2200N, Denmark
| | - Pedro Machado
- Centre
for Ultrastructural Imaging, Kings College
London, LondonSE1 1UL, UK
| | - Nathalie K. Fernando
- Department
of Chemistry, University College London, 20 Gordon Street, LondonWC1H 0AJ, UK
| | - Anna Regoutz
- Department
of Chemistry, University College London, 20 Gordon Street, LondonWC1H 0AJ, UK
| | - Federica Talamona
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Alessandra Pinna
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
- The Francis
Crick Institute, LondonNW11 AT, UK
| | - Michal Klosowski
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Robert J. Wilkinson
- The Francis
Crick Institute, LondonNW11 AT, UK
- Imperial
College, Exhibition Road, LondonSW7 2AZ, UK
| | - Roland A. Fleck
- Centre
for Ultrastructural Imaging, Kings College
London, LondonSE1 1UL, UK
| | - Fang Xie
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Alexandra E. Porter
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Darya Kiryushko
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
- Centre
for Neuroinflammation and Neurodegeneration, Imperial College London, Hammersmith Hospital Campus, Burlington Danes Building, 160 Du
Cane Road, LondonW12 0NN, UK
- Experimental
Solid State Physics Group, Department of Physics, Imperial College, Exhibition Road, LondonSW72AZ, UK
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7
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Hahm E, Jo A, Lee SH, Kang H, Pham XH, Jun BH. Silica Shell Thickness-Dependent Fluorescence Properties of SiO 2@Ag@SiO 2@QDs Nanocomposites. Int J Mol Sci 2022; 23:ijms231710041. [PMID: 36077434 PMCID: PMC9456444 DOI: 10.3390/ijms231710041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/27/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022] Open
Abstract
Silica shell coatings, which constitute important technology for nanoparticle (NP) developments, are utilized in many applications. The silica shell's thickness greatly affects distance-dependent optical properties, such as metal-enhanced fluorescence (MEF) and fluorescence quenching in plasmonic nanocomposites. However, the precise control of silica-shell thicknesses has been mainly conducted on single metal NPs, and rarely on complex nanocomposites. In this study, silica shell-coated Ag nanoparticle-assembled silica nanoparticles (SiO2@Ag@SiO2), with finely controlled silica shell thicknesses (4 nm to 38 nm), were prepared, and quantum dots (QDs) were introduced onto SiO2@Ag@SiO2. The dominant effect between plasmonic quenching and MEF was defined depending on the thickness of the silica shell between Ag and QDs. When the distance between Ag NPs to QDs was less than ~10 nm, SiO2@Ag@SiO2@QDs showed weaker fluorescence intensities than SiO2@QD (without metal) due to the quenching effect. On the other hand, when the distance between Ag NPs to QDs was from 10 nm to 14 nm, the fluorescence intensity of SiO2@Ag@SiO2@QD was stronger than SiO2@QDs due to MEF. The results provide background knowledge for controlling the thickness of silica shells in metal-containing nanocomposites and facilitate the development of potential applications utilizing the optimal plasmonic phenomenon.
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Affiliation(s)
- Eunil Hahm
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Ahla Jo
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Sang Hun Lee
- Department of Chemical and Biological Engineering, Hanbat National University, Deajeon 34158, Korea
| | - Homan Kang
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Xuan-Hung Pham
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
- Correspondence: ; Tel.: +82-2-450-0521
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8
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Pearl WG, Perevedentseva EV, Karmenyan AV, Khanadeev VA, Wu SY, Ma YR, Khlebtsov NG, Cheng CL. Multifunctional plasmonic gold nanostars for cancer diagnostic and therapeutic applications. JOURNAL OF BIOPHOTONICS 2022; 15:e202100264. [PMID: 34784104 DOI: 10.1002/jbio.202100264] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/15/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
Gold nanostar (AuNSt) has gained great attention in bioimaging and cancer therapy due to their tunable surface plasmon resonance across the visible-near infrared range. Photothermal treatment and imaging capabilities including fluorescence lifetime imaging at two-photon excitation (TP-FLIM) and dark-field microscopic imaging are considered in this work. Two types of AuNSts having plasmon absorption peaks centred at 600 and 750 nm wavelength were synthesized and studied. Both NSts exhibited low cytotoxicity on A549 human lung carcinoma cells. A strong emission at two-photon excitation was observed for both NSts, well-distinguishable from lifetimes of bio-object autofluorescence. High efficiency in raising the temperature in the NSts environment with the irradiation of near infrared, AuNSts triggered photothermal effect. The decreased cell viability of A549 observed via MTT test and the cell membrane damaging was demonstrated with trypan blue staining. These results suggest AuNSts can be agents with tunable plasmonic properties for imaging and photothermal therapy.
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Affiliation(s)
- Wrenit Gem Pearl
- Department of Physics, National Dong Hwa University, Hualien, Taiwan
| | - Elena V Perevedentseva
- Department of Physics, National Dong Hwa University, Hualien, Taiwan
- P. N. Lebedev Physics Institute of Russian Academy of Sciences, Moscow, Russia
| | | | - Vitaly A Khanadeev
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Saratov, Russia
- Saratov State Vavilov Agrarian University, Saratov, Russia
| | - Sheng-Yun Wu
- Department of Physics, National Dong Hwa University, Hualien, Taiwan
| | - Yuan-Ron Ma
- Department of Physics, National Dong Hwa University, Hualien, Taiwan
| | - Nikolai G Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Saratov, Russia
- Saratov State University, Saratov, Russia
| | - Chia-Liang Cheng
- Department of Physics, National Dong Hwa University, Hualien, Taiwan
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9
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Zheng P, Kasani S, Tan W, Boryczka J, Gao X, Yang F, Wu N. Plasmon-enhanced near-infrared fluorescence detection of traumatic brain injury biomarker glial fibrillary acidic protein in blood plasma. Anal Chim Acta 2022; 1203:339721. [DOI: 10.1016/j.aca.2022.339721] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/20/2022] [Accepted: 03/09/2022] [Indexed: 12/11/2022]
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10
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Zhao S, Yu Y, Zhang B, Feng P, Dang C, Li M, Zhao L, Gao L. Dual-Mode Circularly Polarized Light Emission and Metal-Enhanced Fluorescence Realized by the Luminophore-Chiral Cellulose Nanocrystal Interfaces. ACS APPLIED MATERIALS & INTERFACES 2021; 13:59132-59141. [PMID: 34852461 DOI: 10.1021/acsami.1c19404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Circularly polarized (CP) light has attracted wide attention for its great potential in broad applications. However, it remains a challenge to generate left-handed and right-handed circularly polarized (LCP and RCP) light from cellulose nanocrystal (CNC)-based materials only with an intrinsic left-handed chiral structure, owing to the pattern of CP light emission primarily based on the chirality of materials. Herein, a separation structure of luminophore layers and chiral CNCs was provided to achieve dual-mode CP light emission by building a luminophore-chiral CNC interface. By directly exciting the back and front of two-layer films, LCP and RCP light could be easily emitted without any assisting means and specific setting angles. In addition, owing to the formation of the luminophore-chiral CNC interface, metal-enhanced fluorescence (MEF) was achieved to offset the brightness loss caused by circular polarization. By incorporating gold triangular nanoprisms in CNC chiral layers, the fluorescence enhancement of the ensemble was as high as 6.5-fold. The decisive role of the luminophore-chiral CNC interface in enhancing luminescence and dual-mode CP light emission was carefully investigated by contrasting the systems with and without luminophore-chiral CNC interfaces in this study. We believe that this dual-mode CP light emission film with MEF enables a promising approach to extending the application of CP light materials.
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Affiliation(s)
- Sixiang Zhao
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yingying Yu
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Boyu Zhang
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Pu Feng
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Congcong Dang
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Ming Li
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Liancheng Zhao
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Liming Gao
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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11
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Yin W, Chen J, Sui J, Dabiri D, Cao G. Luminescence and sensitivity enhancement of oxygen sensors through tuning the spectral overlap between luminescent dyes and SiO
2
@Ag nanoparticles. NANO SELECT 2021. [DOI: 10.1002/nano.202100131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Wenwen Yin
- Department of Aeronautics & Astronautics University of Washington, Seattle Washington USA
| | - Jinxing Chen
- Institute of Functional Nano&Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon‐Based Functional Materials Devices Soochow University Suzhou Jiangsu P. R. China
| | - Jiajie Sui
- Department of Materials and Engineering University of Washington, Seattle Washington USA
| | - Dana Dabiri
- Department of Aeronautics & Astronautics University of Washington, Seattle Washington USA
| | - Guozhong Cao
- Department of Materials and Engineering University of Washington, Seattle Washington USA
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12
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Spedalieri C, Szekeres GP, Werner S, Guttmann P, Kneipp J. Probing the Intracellular Bio-Nano Interface in Different Cell Lines with Gold Nanostars. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1183. [PMID: 33946192 PMCID: PMC8145934 DOI: 10.3390/nano11051183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 02/07/2023]
Abstract
Gold nanostars are a versatile plasmonic nanomaterial with many applications in bioanalysis. Their interactions with animal cells of three different cell lines are studied here at the molecular and ultrastructural level at an early stage of endolysosomal processing. Using the gold nanostars themselves as substrate for surface-enhanced Raman scattering, their protein corona and the molecules in the endolysosomal environment were characterized. Localization, morphology, and size of the nanostar aggregates in the endolysosomal compartment of the cells were probed by cryo soft-X-ray nanotomography. The processing of the nanostars by macrophages of cell line J774 differed greatly from that in the fibroblast cell line 3T3 and in the epithelial cell line HCT-116, and the structure and composition of the biomolecular corona was found to resemble that of spherical gold nanoparticles in the same cells. Data obtained with gold nanostars of varied morphology indicate that the biomolecular interactions at the surface in vivo are influenced by the spike length, with increased interaction with hydrophobic groups of proteins and lipids for longer spike lengths, and independent of the cell line. The results will support optimized nanostar synthesis and delivery for sensing, imaging, and theranostics.
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Affiliation(s)
- Cecilia Spedalieri
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany; (C.S.); (G.P.S.)
| | - Gergo Péter Szekeres
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany; (C.S.); (G.P.S.)
- School of Analytical Sciences Adlershof, Humboldt-Universität zu Berlin, Albert-Einstein-Str. 5-9, 12489 Berlin, Germany
| | - Stephan Werner
- Department X-ray Microscopy, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin, Germany; (S.W.); (P.G.)
| | - Peter Guttmann
- Department X-ray Microscopy, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin, Germany; (S.W.); (P.G.)
| | - Janina Kneipp
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany; (C.S.); (G.P.S.)
- School of Analytical Sciences Adlershof, Humboldt-Universität zu Berlin, Albert-Einstein-Str. 5-9, 12489 Berlin, Germany
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13
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Abstract
The extraordinary sensitivity of plasmonic sensors is well-known in the optics and photonics community. These sensors exploit simultaneously the enhancement and the localization of electromagnetic fields close to the interface between a metal and a dielectric. This enables, for example, the design of integrated biochemical sensors at scales far below the diffraction limit. Despite their practical realization and successful commercialization, the sensitivity and associated precision of plasmonic sensors are starting to reach their fundamental classical limit given by quantum fluctuations of light-known as the shot-noise limit. To improve the sensing performance of these sensors beyond the classical limit, quantum resources are increasingly being employed. This area of research has become known as "quantum plasmonic sensing", and it has experienced substantial activity in recent years for applications in chemical and biological sensing. This review aims to cover both plasmonic and quantum techniques for sensing, and it shows how they have been merged to enhance the performance of plasmonic sensors beyond traditional methods. We discuss the general framework developed for quantum plasmonic sensing in recent years, covering the basic theory behind the advancements made, and describe the important works that made these advancements. We also describe several key works in detail, highlighting their motivation, the working principles behind them, and their future impact. The intention of the review is to set a foundation for a burgeoning field of research that is currently being explored out of intellectual curiosity and for a wide range of practical applications in biochemistry, medicine, and pharmaceutical research.
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Affiliation(s)
- Changhyoup Lee
- Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany.,Quantum Universe Center, Korea Institute for Advanced Study, Seoul 02455, Republic of Korea
| | - Benjamin Lawrie
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Raphael Pooser
- Quantum Information Science Group, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Kwang-Geol Lee
- Department of Physics, Hanyang University, Seoul 04763, Republic of Korea
| | - Carsten Rockstuhl
- Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany.,Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021Karlsruhe, Germany.,Max Planck School of Photonics, 07745 Jena, Germany
| | - Mark Tame
- Department of Physics, Stellenbosch University, Stellenbosch 7602, South Africa
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14
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15
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Tavakkoli Yaraki M, Hu F, Daqiqeh Rezaei S, Liu B, Tan YN. Metal-enhancement study of dual functional photosensitizers with aggregation-induced emission and singlet oxygen generation. NANOSCALE ADVANCES 2020; 2:2859-2869. [PMID: 36132415 PMCID: PMC9419615 DOI: 10.1039/d0na00182a] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/09/2020] [Indexed: 05/10/2023]
Abstract
Photosensitizers with aggregation-induced emission (AIE-PS) are attractive for image-guided photodynamic therapy due to their dual functional role in generating singlet oxygen and producing high fluorescent signal in the aggregated state. However, their brightness and treatment efficiency maybe limited in current practice. Herein we report the first systematic investigation on the metal-enhanced fluorescence (MEF) and singlet oxygen generation (ME-SOG) ability of our newly synthesized AIE-photosensitizers. The Ag@AIE-PS of varied sizes were prepared via layer-by-layer assembly with controlled distance between silver nanoparticles (AgNPs) and AIE-PS. A maximum of 6-fold enhancement in fluorescence and 2-fold increment in SOG were observed for the 85nmAg@AIE-PS. Comprehensive characterization and simulation were conducted to unravel the plasmon-enhancement mechanisms of Ag@AIE-PS. Results show that MEF of AIE-PS is determined by the enhanced electric field around AgNPs, while ME-SOG is dictated by the scattering efficiency of the metal core, where bigger AgNPs would result in larger enhancement factor. Furthermore, the optimum distance between AgNPs and AIE-PS to achieve maximum SOG enhancement is shorter than that required for the highest MEF. The correlation of MEF and ME-SOG found in this study is useful for designing new a generation of AIE-photosensitizers with high brightness and treatment efficiency towards practical theranostic application in the future.
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Affiliation(s)
- Mohammad Tavakkoli Yaraki
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (ASTAR) 138634 Singapore
- Department Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore
| | - Fang Hu
- Department Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore
| | - Soroosh Daqiqeh Rezaei
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (ASTAR) 138634 Singapore
- Department of Mechanical Engineering, National University of Singapore 9 Engineering Drive 1 117575 Singapore
| | - Bin Liu
- Department Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore
| | - Yen Nee Tan
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (ASTAR) 138634 Singapore
- Faculty of Science, Agriculture & Engineering, Newcastle University Newcastle Upon Tyne NE1 7RU UK
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16
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Magalhães Sousa D, Chiappim W, P. Leitão J, Lima JC, Ferreira I. Microwave Synthesis of Silver Sulfide and Silver Nanoparticles: Light and Time Influence. ACS OMEGA 2020; 5:12877-12881. [PMID: 32548471 PMCID: PMC7288597 DOI: 10.1021/acsomega.0c00656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
Silver sulfide (Ag2S) is a low band gap material, which absorbs near-infrared light and is of great importance in areas such as nanotechnology and biomedicine. We report the influence of the starting reagents, synthesis time, and light radiation on the geometry and size of silver sulfide nanoparticles and on the fraction of metallic Ag obtained in a microwave reactor. The X-ray diffraction diffractograms confirmed that Ag2S is the main product if the reaction's precursor contains silver in the oxidation state of +1 and mostly metallic silver (Ag°) when it is +2. Small nanoparticles (∼6 nm) of spherical geometry are present in the transmission electron microscopy images for the synthesis performed with the lamp light ON, while with the light switched OFF, wider and hundreds of nanometers longer particles are observed. This discriminative effect occurs with shorter synthesis time duration (<10 min) but when the time of reaction is extended, the particles coalesce for both light and dark conditions. Overall, it was observed by photoluminescence that crystalline Ag and Ag2S 4-8 nm nanoparticles obtained in 15 min and light irradiation during synthesis have a clear relative increase of the radiative recombination channels of the charged carriers, which are typical of materials characterized by the involvement of low density of states inside the band gap.
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Affiliation(s)
- David Magalhães Sousa
- CENIMAT/I3N,
Departamento de Ciência dos Materiais, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - William Chiappim
- i3N,
Departamento de Física, Universidade
de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Joaquim P. Leitão
- i3N,
Departamento de Física, Universidade
de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - João Carlos Lima
- LAQV-REQUIMTE,
Departamento de Química, CQF B. Faculdade de Ciências
e Tecnologia, Universidade NOVA de Lisboa, Quinta da Torre, Campus Universitário, 2829-516 Caparica, Portugal
| | - Isabel Ferreira
- CENIMAT/I3N,
Departamento de Ciência dos Materiais, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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17
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Charchi N, Li Y, Huber M, Kwizera EA, Huang X, Argyropoulos C, Hoang T. Small mode volume plasmonic film-coupled nanostar resonators. NANOSCALE ADVANCES 2020; 2:2397-2403. [PMID: 34046555 PMCID: PMC8153380 DOI: 10.1039/d0na00262c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 05/04/2020] [Indexed: 06/12/2023]
Abstract
Confining and controlling light in extreme subwavelength scales are tantalizing tasks. In this work, we report a study of individual plasmonic film-coupled nanostar resonators where polarized plasmonic optical modes are trapped in ultrasmall volumes. Individual gold nanostars, separated from a flat gold film by a thin dielectric spacer layer, exhibit a strong light confinement between the sub-10 nm volume of the nanostar's tips and the film. Through dark field scattering measurements of many individual nanostars, a statistical observation of the scattered spectra is obtained and compared with extensive simulation data to reveal the origins of the resonant peaks. We observe that an individual nanostar on a flat gold film can result in a resonant spectrum with single, double or multiple peaks. Further, these resonant peaks are strongly polarized under white light illumination. Our simulation data revealed that the resonant spectrum of an individual film-coupled nanostar resonator is related to the symmetry of the nanostar, as well as the orientation of the nanostar relative to its placement on the gold substrate. Our results demonstrate a simple new method to create an ultrasmall mode volume and polarization sensitive plasmonic platform which could be useful for applications in sensing or enhanced light-matter interactions.
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Affiliation(s)
- Negar Charchi
- Department of Physics and Materials Science, The University of MemphisMemphisTN 38152USA
| | - Ying Li
- Department of Electrical and Computer Engineering, University of Nebraska-LincolnLincolnNE 68588USA
| | - Margaret Huber
- Department of Physics and Materials Science, The University of MemphisMemphisTN 38152USA
| | | | - Xiaohua Huang
- Department of Chemistry, The University of MemphisMemphisTN 38152USA
| | - Christos Argyropoulos
- Department of Electrical and Computer Engineering, University of Nebraska-LincolnLincolnNE 68588USA
| | - Thang Hoang
- Department of Physics and Materials Science, The University of MemphisMemphisTN 38152USA
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18
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Ruenraroengsak P, Kiryushko D, Theodorou IG, Klosowski MM, Taylor ER, Niriella T, Palmieri C, Yagüe E, Ryan MP, Coombes RC, Xie F, Porter AE. Frizzled-7-targeted delivery of zinc oxide nanoparticles to drug-resistant breast cancer cells. NANOSCALE 2019; 11:12858-12870. [PMID: 31157349 DOI: 10.1039/c9nr01277j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
There is a need for novel strategies to treat aggressive breast cancer subtypes and overcome drug resistance. ZnO nanoparticles (NPs) have potential in cancer therapy due to their ability to potently and selectively induce cancer cell apoptosis. Here, we tested the in vitro chemotherapeutic efficacy of ZnONPs loaded via a mesoporous silica nanolayer (MSN) towards drug-sensitive breast cancer cells (MCF-7: estrogen receptor-positive, CAL51: triple-negative) and their drug-resistant counterparts (MCF-7TX, CALDOX). ZnO-MSNs were coated on to gold nanostars (AuNSs) for future imaging capabilities in the NIR-II range. Electron and confocal microscopy showed that MSN-ZnO-AuNSs accumulated close to the plasma membrane and were internalized by cells. High-resolution electron microscopy showed that MSN coating degraded outside the cells, releasing ZnONPs that interacted with cell membranes. MSN-ZnO-AuNSs efficiently reduced the viability of all cell lines, and CAL51/CALDOX cells were more susceptible than MCF7/MCF-7-TX cells. MSN-ZnO-AuNSs were then conjugated with the antibody to Frizzled-7 (FZD-7), the receptor upregulated by several breast cancer cells. We used the disulphide (S-S) linker that could be cleaved with a high concentration of glutathione normally observed within cancer cells, releasing Zn2+ into the cytoplasm. FZD-7 targeting resulted in approximately three-fold amplified toxicity of MSN-ZnO-AuNSs towards the MCF-7TX drug-resistant cell line with the highest FZD-7 expression. This study shows that ZnO-MSs are promising tools to treat triple-negative and drug-resistant breast cancers and highlights the potential clinical utility of FZD-7 for delivery of nanomedicines and imaging probes specifically to these cancer types.
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Affiliation(s)
- Pakatip Ruenraroengsak
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK. and Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Road, Rajathevi, Bangkok, 10400, Thailand
| | - Darya Kiryushko
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
| | - Ioannis G Theodorou
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
| | - Michał M Klosowski
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
| | - Erik R Taylor
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
| | - Thisa Niriella
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
| | - Carlo Palmieri
- Institute of Translational Medicine, University of Liverpool, L693BX, Liverpool, UK
| | - Ernesto Yagüe
- Division of Cancer, Imperial College Faculty of Medicine, Hammersmith Hospital Campus, Du Cane Road, London W12 0NN, UK
| | - Mary P Ryan
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
| | - R Charles Coombes
- Division of Cancer, Imperial College Faculty of Medicine, Hammersmith Hospital Campus, Du Cane Road, London W12 0NN, UK
| | - Fang Xie
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
| | - Alexandra E Porter
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
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19
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Pang JS, Theodorou IG, Centeno A, Petrov PK, Alford NM, Ryan MP, Xie F. Tunable Three-Dimensional Plasmonic Arrays for Large Near-Infrared Fluorescence Enhancement. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23083-23092. [PMID: 31252484 DOI: 10.1021/acsami.9b08802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metal-enhanced fluorescence (MEF), resulting from the near-field interaction of fluorophores with metallic nanostructures, has emerged as a powerful tool for dramatically improving the performance of fluorescence-based biomedical applications. Allowing for lower autofluorescence and minimal photoinduced damage, the development of multifunctional and multiplexed MEF platforms in the near-infrared (NIR) windows is particularly desirable. Here, a low-cost fabrication method based on nanosphere lithography is applied to produce tunable three-dimensional (3D) gold (Au) nanohole-disc arrays (Au-NHDAs). The arrays consist of nanoscale glass pillars atop nanoholes in a Au thin film: the top surfaces of the pillars are Au-covered (effectively nanodiscs), and small Au nanoparticles (nanodots) are located on the sidewalls of the pillars. This 3D hole-disc (and possibly nanodot) construct is critical to the properties of the device. The versatility of our approach is illustrated through the production of uniform and highly reproducible Au-NHDAs with controlled structural properties and tunable optical features in the NIR windows. Au-NHDAs allow for a very large NIR fluorescence enhancement (more than 400 times), which is attributed to the 3D plasmonic structure of the arrays that allows strong surface plasmon polariton and localized surface plasmon resonance coupling through glass nanogaps. By considering arrays with the same resonance peak and the same nanodisc separation distance, we show that the enhancement factor varies with nanodisc diameter. Using computational electromagnetic modeling, the electric field enhancement at 790 nm was calculated to provide insights into excitation enhancement, which occurs due to an increase in the intensity of the electric field. Fluorescence lifetime measurements indicate that the total fluorescence enhancement may depend on controlling excitation enhancement and therefore the array morphology. Our findings provide important insights into the mechanism of MEF from 3D plasmonic arrays and establish a low-cost versatile approach that could pave the way for novel NIR-MEF bioapplications.
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Affiliation(s)
- Jing S Pang
- Department of Materials and London Centre for Nanotechnology , Imperial College London , SW7 2AZ , London , U.K
| | - Ioannis G Theodorou
- Department of Materials and London Centre for Nanotechnology , Imperial College London , SW7 2AZ , London , U.K
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering , University of Cyprus , 40 Macedonias Avenue , Latsia 2238 , Cyprus
| | - Anthony Centeno
- Department of Materials and London Centre for Nanotechnology , Imperial College London , SW7 2AZ , London , U.K
- Department of Electrical and Electronic Engineering , Xi'an Jiaotong Liverpool University , 111 Ren'ai Road , Suzhou Dushu Lake Higher Education Town , Jiangsu 215123 , China
| | - Peter K Petrov
- Department of Materials and London Centre for Nanotechnology , Imperial College London , SW7 2AZ , London , U.K
| | - Neil M Alford
- Department of Materials and London Centre for Nanotechnology , Imperial College London , SW7 2AZ , London , U.K
| | - Mary P Ryan
- Department of Materials and London Centre for Nanotechnology , Imperial College London , SW7 2AZ , London , U.K
| | - Fang Xie
- Department of Materials and London Centre for Nanotechnology , Imperial College London , SW7 2AZ , London , U.K
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20
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Zang F, Su Z, Zhou L, Konduru K, Kaplan G, Chou SY. Ultrasensitive Ebola Virus Antigen Sensing via 3D Nanoantenna Arrays. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902331. [PMID: 31168856 DOI: 10.1002/adma.201902331] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/15/2019] [Indexed: 05/29/2023]
Abstract
Sensitive detection of pathogens is crucial for early disease diagnosis and quarantine, which is of tremendous need in controlling severe and fatal illness epidemics such as of Ebola virus (EBOV) disease. Serology assays can detect EBOV-specific antigens and antibodies cost-effectively without sophisticated equipment; however, they are less sensitive than reverse transcriptase polymerase chain reaction (RT-PCR) tests. Herein, a 3D plasmonic nanoantenna assay sensor is developed as an on-chip immunoassay platform for ultrasensitive detection of Ebola virus (EBOV) antigens. The EBOV sensor exhibits substantial fluorescence intensity enhancement in immunoassays compared to flat gold substrate. The nanoantenna-based biosensor successfully detects EBOV soluble glycoprotein (sGP) in human plasma down to 220 fg mL-1 , a significant 240 000-fold sensitivity improvement compared to the 53 ng mL-1 EBOV antigen detection limit of the existing rapid EBOV immunoassay. In a mock clinical trial, the sensor detects sGP-spiked human plasma samples at two times the limit of detection with 95.8% sensitivity. The results combined highlight the nanosensor's extraordinary capability of detecting EBOV antigen at ultralow concentration compared to existing immunoassay methods. It is a promising next-generation bioassay platform for early-stage disease diagnosis and pathogen detection for both public health and national security applications.
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Affiliation(s)
- Faheng Zang
- Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, USA
| | - Zhijuan Su
- Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, USA
| | - Liangcheng Zhou
- Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, USA
| | - Krishnamurthy Konduru
- Laboratory of Emerging Pathogens, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD, 20993, USA
| | - Gerardo Kaplan
- Laboratory of Emerging Pathogens, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD, 20993, USA
| | - Stephen Y Chou
- Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, USA
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21
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Han X, Xu Y, Li Y, Zhao X, Zhang Y, Min H, Qi Y, Anderson GJ, You L, Zhao Y, Nie G. An Extendable Star-Like Nanoplatform for Functional and Anatomical Imaging-Guided Photothermal Oncotherapy. ACS NANO 2019; 13:4379-4391. [PMID: 30901191 DOI: 10.1021/acsnano.8b09607] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Combining informative imaging methodologies with effective treatments to destroy tumors is of great importance for oncotherapy. Versatile nanotheranostic agents that inherently possess both diagnostic imaging and therapeutic capabilities are highly desirable to meet these requirements. Here, a simple but powerful nanoplatform based on polydopamine-coated gold nanostar (GNS@PDA), which can be easily diversified to achieve various function extensions, is designed to realize functional and anatomical imaging-guided photothermal oncotherapy. This nanoplatform intrinsically enables computed tomography/photoacoustic/two-photon luminescence/infrared thermal tetramodal imaging and can further incorporate fibroblast activation protein (FAP, a protease highly expressed in most of tumors) activatable near-infrared fluorescence imaging and Fe3+-based magnetic resonance imaging for comprehensive diagnosis. Moreover, GNS@PDA exhibits excellent photothermal performance and efficient tumor accumulation. Under the precise guidance of multimodal imaging, GNS@PDA conducts homogeneous photothermal ablation of bulky solid tumors (∼200 mm3) in a xenograft mouse model. These results suggest great promise of this extendable nanoplatform for cancer theranostics.
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Affiliation(s)
- Xuexiang Han
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P.R. China
- Department of Chemistry , Tsinghua University , Beijing 100084 , P.R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Ying Xu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P.R. China
- Sino-Danish College, Sino-Danish Center for Education and Research , University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
- Department of Pharmacy , Copenhagen University , Universitetsparken 2 , DK-2100 Copenhagen , Denmark
| | - Yiye Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P.R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Xiao Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P.R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Yinlong Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P.R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Huan Min
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P.R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Yingqiu Qi
- School of Basic Medical Sciences , Zhengzhou University , Zhengzhou , Henan 450001 , P.R. China
| | - Gregory J Anderson
- QIMR Berghofer Medical Research Institute , Royal Brisbane Hospital , Brisbane , Queensland 4029 , Australia
| | - Linhao You
- Laboratory of Molecular Iron Metabolism, College of Life Science , Hebei Normal University , Shijiazhuang , Hebei Province 050024 , P.R. China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P.R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P.R. China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
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22
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Theodorou IG, Ruenraroengsak P, Gonzalez-Carter DA, Jiang Q, Yagüe E, Aboagye EO, Coombes RC, Porter AE, Ryan MP, Xie F. Towards multiplexed near-infrared cellular imaging using gold nanostar arrays with tunable fluorescence enhancement. NANOSCALE 2019; 11:2079-2088. [PMID: 30648720 DOI: 10.1039/c8nr09409h] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Sensitive detection of disease biomarkers expressed by human cells is critical to the development of novel diagnostic and therapeutic methods. Here we report that plasmonic arrays based on gold nanostar (AuNS) monolayers enable up to 19-fold fluorescence enhancement for cellular imaging in the near-infrared (NIR) biological window, allowing the application of low quantum yield fluorophores for sensitive cellular imaging. The high fluorescence enhancement together with low autofluorescence interference in this wavelength range enable higher signal-to-noise ratio compared to other diagnostic modalities. Using AuNSs of different geometries and therefore controllable electric field enhancement, cellular imaging with tunable enhancement factors is achieved, which may be useful for the development of multicolour and multiplexed platforms for a panel of biomarkers, allowing to distinguish different subcell populations at the single cell level. Finally, the uptake of AuNSs within HeLa cells and their high biocompatibility, pave the way for novel high-performance in vitro and in vivo diagnostic platforms.
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Affiliation(s)
- Ioannis G Theodorou
- Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
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23
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Nehra K, Pandian SK, Bharati MSS, Soma VR. Enhanced catalytic and SERS performance of shape/size controlled anisotropic gold nanostructures. NEW J CHEM 2019. [DOI: 10.1039/c8nj06206d] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Au nanostars of different sizes and shapes prepared using a simple method and their applications.
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Affiliation(s)
- Kamalesh Nehra
- Department of Physics and Astrophysics, University of Delhi
- Delhi 110007
- India
| | | | - Moram Sree Satya Bharati
- Advanced Centre for Research in High Energy Materials (ACRHEM), University of Hyderabad
- Hyderabad 500046
- India
| | - Venugopal Rao Soma
- Advanced Centre for Research in High Energy Materials (ACRHEM), University of Hyderabad
- Hyderabad 500046
- India
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