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Renzi E, Piper A, Nastri F, Merkoçi A, Lombardi A. An Artificial Miniaturized Peroxidase for Signal Amplification in Lateral Flow Immunoassays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207949. [PMID: 36942720 DOI: 10.1002/smll.202207949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Signal amplification strategies are widely used for improving the sensitivity of lateral flow immunoassays (LFiAs). Herein, the artificial miniaturized peroxidase Fe(III)-MimochromeVI*a (FeMC6*a), immobilized on gold nanoparticles (AuNPs), is used as a strategy to obtain catalytic signal amplification in sandwich immunoassays on lateral flow strips. The assay scheme uses AuNPs decorated with the mini-peroxidase FeMC6*a and anti-human-IgG as a detection antibody (dAb), for the detection of human-IgG, as a model analyte. Recognition of the analyte by the capture and detection antibodies is first evidenced by the appearance of a red color in the test line (TL), due to the accumulation of AuNPs. Subsequent addition of 3,3',5,5'-tetramethylbenzidine (TMB) induces an increase of the test line color, due to the TMB being converted into an insoluble colored product, catalyzed by FeMC6*a. This work shows that FeMC6*a acts as an efficient catalyst in paper, increasing the sensitivity of an LFiA up to four times with respect to a conventional LFiA. Furthermore, FeMC6*a achieves lower limits of detection that are found in control experiments where it is replaced with horseradish peroxidase (HRP), its natural counterpart. This study represents a significant proof-of-concept for the development of more sensitive LFiAs, for different analytes, based on properly designed artificial metalloenzymes.
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Affiliation(s)
- Emilia Renzi
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 21, Napoli, 80126, Italy
- Nanobioelectronics & Biosensors Group, Institut Català de Nanociència I Nanotecnologia (ICN2), CSIC and The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, Barcelona, 08193, Spain
| | - Andrew Piper
- Nanobioelectronics & Biosensors Group, Institut Català de Nanociència I Nanotecnologia (ICN2), CSIC and The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, Barcelona, 08193, Spain
| | - Flavia Nastri
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 21, Napoli, 80126, Italy
| | - Arben Merkoçi
- Nanobioelectronics & Biosensors Group, Institut Català de Nanociència I Nanotecnologia (ICN2), CSIC and The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, Barcelona, 08193, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, Barcelona, 08010, Spain
| | - Angela Lombardi
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 21, Napoli, 80126, Italy
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Sibuyi NRS, Moabelo KL, Fadaka AO, Meyer S, Onani MO, Madiehe AM, Meyer M. Multifunctional Gold Nanoparticles for Improved Diagnostic and Therapeutic Applications: A Review. NANOSCALE RESEARCH LETTERS 2021; 16:174. [PMID: 34866165 PMCID: PMC8645298 DOI: 10.1186/s11671-021-03632-w] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 11/21/2021] [Indexed: 05/07/2023]
Abstract
The medical properties of metals have been explored for centuries in traditional medicine for the treatment of infections and diseases and still practiced to date. Platinum-based drugs are the first class of metal-based drugs to be clinically used as anticancer agents following the approval of cisplatin by the United States Food and Drug Administration (FDA) over 40 years ago. Since then, more metals with health benefits have been approved for clinical trials. Interestingly, when these metals are reduced to metallic nanoparticles, they displayed unique and novel properties that were superior to their bulk counterparts. Gold nanoparticles (AuNPs) are among the FDA-approved metallic nanoparticles and have shown great promise in a variety of roles in medicine. They were used as drug delivery, photothermal (PT), contrast, therapeutic, radiosensitizing, and gene transfection agents. Their biomedical applications are reviewed herein, covering their potential use in disease diagnosis and therapy. Some of the AuNP-based systems that are approved for clinical trials are also discussed, as well as the potential health threats of AuNPs and some strategies that can be used to improve their biocompatibility. The reviewed studies offer proof of principle that AuNP-based systems could potentially be used alone or in combination with the conventional systems to improve their efficacy.
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Affiliation(s)
- Nicole Remaliah Samantha Sibuyi
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa
| | - Koena Leah Moabelo
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa
- Nanobiotechnology Research Group, Department of Biotechnology, University of the Western Cape, Bellville, South Africa
| | - Adewale Oluwaseun Fadaka
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa
| | - Samantha Meyer
- Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Bellville, South Africa
| | - Martin Opiyo Onani
- Organometallics and Nanomaterials, Department of Chemical Sciences, University of the Western Cape, Bellville, South Africa
| | - Abram Madimabe Madiehe
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa.
- Nanobiotechnology Research Group, Department of Biotechnology, University of the Western Cape, Bellville, South Africa.
| | - Mervin Meyer
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa.
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Development of an Immunochromatographic Strip Using Conjugated Gold Nanoparticles for the Rapid Detection of Klebsiella pneumoniae Causing Neonatal Sepsis. Pharmaceutics 2021; 13:pharmaceutics13081141. [PMID: 34452099 PMCID: PMC8401635 DOI: 10.3390/pharmaceutics13081141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/09/2021] [Accepted: 07/22/2021] [Indexed: 11/16/2022] Open
Abstract
Neonatal sepsis is a leading cause of death among newborns and infants, especially in the developing world. The problem is compounded by the delays in pinpointing the causative agent of the infection. This is reflected in increasing mortality associated with these cases and the spread of multi-drug-resistant bacteria. In this work, we deployed bioinformatics and proteomics analyses to determine a promising target that could be used for the identification of a major neonatal sepsis causative agent, Klebsiella pneumoniae. A 19 amino acid peptide from a hypothetical outer membrane was found to be very specific to the species, well conserved among its strains, surface exposed, and expressed in conditions simulating infection. Antibodies against the selected peptide were conjugated to gold nanoparticles and incorporated into an immunochromatographic strip. The developed strip was able to detect as low as 105 CFU/mL of K. pneumoniae. Regarding specificity, it showed negative results with both Escherichia coli and Enterobacter cloacae. More importantly, in a pilot study using neonatal sepsis cases blood specimens, the developed strip selectively gave positive results within 20 min with those infected with K. pneumoniae without prior sample processing. However, it gave negative results in cases infected with other bacterial species.
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Comparison of Single- and Mixed-Sized Gold Nanoparticles on Lateral Flow Assay for Albumin Detection. BIOSENSORS-BASEL 2021; 11:bios11070209. [PMID: 34206883 PMCID: PMC8301757 DOI: 10.3390/bios11070209] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/17/2021] [Accepted: 06/23/2021] [Indexed: 11/16/2022]
Abstract
The sensitivity and reproducibility of the lateral flow assay can be influenced by multiple factors, such as the size of gold nanoparticles (GNPs) employed. Here, we evaluated the analytical performance of single-sized and mixed-sized GNPs using a simple lateral flow assay (LFA) platform. This platform was used as a model assay to diagnose albumin levels and demonstrate the analytical performance of single-sized and mixed-sized GNPs in LFA tests. Two sizes of GNPs@anti-bovine serum albumin (BSA) conjugate proteins were mixed at different ratios. The unique optical properties of the GNPs induced a distinguishing color-shedding effect on the single- and mixed-sized GNPs@anti-BSA conjugates interacting with the target analyte BSA spotted on the test line. The use of mixed-sized GNPs@anti-BSA conjugates enhanced signal relative to the 20 nm GNPs, and provided superior stability compared with solely employing the large GNPs (50 nm). The proposed platform in this study could provide an efficient BSA detection mechanism that can be utilized as a model biomarker for confronting chronic kidney disease.
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Okoampah E, Mao Y, Yang S, Sun S, Zhou C. Gold nanoparticles-biomembrane interactions: From fundamental to simulation. Colloids Surf B Biointerfaces 2020; 196:111312. [PMID: 32841786 DOI: 10.1016/j.colsurfb.2020.111312] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/20/2020] [Accepted: 08/06/2020] [Indexed: 12/21/2022]
Abstract
Gold Nanoparticles (AuNPs) are a class of promising nanomaterial for biomedical applications ranging from bioimaging, drug delivery to phototherapy because of their biocompatibility, easily tunable size and shape, and versatile surface modifications. In recent years, the rapid development of AuNPs in nanomedicine has made it imperative to seek fundamental understanding on their nano-biointeractions to minimize adverse effects and improve targeting/imaging efficiency. In this review, we summarize the different pathways of NPs-biomembrane interactions with a focus on AuNPs, follow by an analysis on how the physiochemical properties (size, surface charge, shape, surface ligands, and hydrophobicity etc.) of AuNPs can be involved in the mechanisms of cellular uptake. Finally, some recent advances on simulation modelling of AuNPs-biomembrane interactions and a brief outlook in the field are discussed.
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Affiliation(s)
- Emmanuel Okoampah
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Yusheng Mao
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Shengyang Yang
- Department of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, China
| | - Shasha Sun
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China.
| | - Chen Zhou
- School of Natural Sciences, University of Central Missouri, Warrensburg, USA.
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Chen X, Leng Y, Hao L, Duan H, Yuan J, Zhang W, Huang X, Xiong Y. Self-assembled colloidal gold superparticles to enhance the sensitivity of lateral flow immunoassays with sandwich format. Theranostics 2020; 10:3737-3748. [PMID: 32206119 PMCID: PMC7069069 DOI: 10.7150/thno.42364] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 01/20/2020] [Indexed: 12/17/2022] Open
Abstract
Background: Traditional lateral flow immunoassay (LFIA) based on 20-40 nm gold nanoparticles (AuNPs) as signal reporter always suffers from relatively low detection sensitivity due to its insufficient brightness, severely restricting its wide-ranging application in the detection of target analytes with trace concentration. Methods: To address this problem, the self-assembled colloidal gold superparticles (GSPs) were synthesized as an improved absorption-dominated labeling probe for improving the sensitivity of sandwich LFIA. Five kinds of GSPs with the size ranging from 100 nm to 400 nm were synthesized by embedding hydrophobic AuNPs of size 12 nm as building blocks into the polymer nanobeads. The as-prepared GSPs were suggested as novel labeling probes of LFIA. The effects of the size of assembled GSPs on the sensitivity of sandwich LFIA was assessed, and the detection performance of GSPs-LFIA was further compared with traditional AuNPs-LFIA. Results: The resultant GSPs showed extremely high light absorption but very low light scattering, which favor the absorption-dominated signal output in LFIA. Among them, the GSP270-LFIA (size 270 nm) exhibits the highest sensitivity for human chorionic gonadotropin and hepatitis B surface antigen detection in real serum sample, which are approximate 39.79- and 13.8-fold higher than that of traditional AuNP40-LFIA. Conclusions: The proposed research demonstrated that the current GSPs can provide an ultrasensitive and quantitative detection for disease biomarkers in real serum samples as promising reporters of sandwich LFIA platform.
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Serebrennikova K, Samsonova J, Osipov A. Hierarchical Nanogold Labels to Improve the Sensitivity of Lateral Flow Immunoassay. NANO-MICRO LETTERS 2018; 10:24. [PMID: 30393673 PMCID: PMC6199071 DOI: 10.1007/s40820-017-0180-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 11/23/2017] [Indexed: 05/14/2023]
Abstract
Lateral flow immunoassay (LFIA) is a widely used express method and offers advantages such as a short analysis time, simplicity of testing and result evaluation. However, an LFIA based on gold nanospheres lacks the desired sensitivity, thereby limiting its wide applications. In this study, spherical nanogold labels along with new types of nanogold labels such as gold nanopopcorns and nanostars were prepared, characterized, and applied for LFIA of model protein antigen procalcitonin. It was found that the label with a structure close to spherical provided more uniform distribution of specific antibodies on its surface, indicative of its suitability for this type of analysis. LFIA using gold nanopopcorns as a label allowed procalcitonin detection over a linear range of 0.5-10 ng mL-1 with the limit of detection of 0.1 ng mL-1, which was fivefold higher than the sensitivity of the assay with gold nanospheres. Another approach to improve the sensitivity of the assay included the silver enhancement method, which was used to compare the amplification of LFIA for procalcitonin detection. The sensitivity of procalcitonin determination by this method was 10 times better the sensitivity of the conventional LFIA with gold nanosphere as a label. The proposed approach of LFIA based on gold nanopopcorns improved the detection sensitivity without additional steps and prevented the increased consumption of specific reagents (antibodies).
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Affiliation(s)
- Kseniya Serebrennikova
- Chemistry Faculty, Lomonosov Moscow State University, Leninskiye Gory, Moscow, Russia, 119991.
- National University of Science and Technology "MISiS", Leninskiy Prospect 4, Moscow, Russia, 119049.
| | - Jeanne Samsonova
- Chemistry Faculty, Lomonosov Moscow State University, Leninskiye Gory, Moscow, Russia, 119991
- National University of Science and Technology "MISiS", Leninskiy Prospect 4, Moscow, Russia, 119049
| | - Alexander Osipov
- Chemistry Faculty, Lomonosov Moscow State University, Leninskiye Gory, Moscow, Russia, 119991
- National University of Science and Technology "MISiS", Leninskiy Prospect 4, Moscow, Russia, 119049
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Khlebtsov B, Pylaev T, Khanadeev V, Bratashov D, Khlebtsov N. Quantitative and multiplex dot-immunoassay using gap-enhanced Raman tags. RSC Adv 2017. [DOI: 10.1039/c7ra08113h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
A highly specific, quantitative, and multiplex dot immunoassay has been developed. The immunoassay utilizes functionalized plasmonic gap-enhanced Raman tags (GERTs) as labels and nitrocellulose membrane as a substrate.
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Affiliation(s)
- Boris Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
| | - Timophey Pylaev
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
| | - Vitaly Khanadeev
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
| | | | - Nikolai Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
- National Research Saratov State University
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Khlebtsov B, Tuchina E, Tuchin V, Khlebtsov N. Multifunctional Au nanoclusters for targeted bioimaging and enhanced photodynamic inactivation of Staphylococcus aureus. RSC Adv 2015. [DOI: 10.1039/c5ra11713e] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
A novel nanocluster platform is developed to combine intense red fluorescence of Au25–BSA nanoclusters (QY ∼ 14%), biospecific binding to S. aureus due to human antistaphylococcal IgG, and photodynamic inactivation due to photosensitizer Photosens™.
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Affiliation(s)
- Boris Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
- Chernyshevsky Saratov State University
| | - Elena Tuchina
- Chernyshevsky Saratov State University
- Saratov 410012
- Russia
| | - Valery Tuchin
- Chernyshevsky Saratov State University
- Saratov 410012
- Russia
- Institute of Precise Mechanics and Control
- Russian Academy of Sciences
| | - Nikolai Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
- Chernyshevsky Saratov State University
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Khlebtsov N, Bogatyrev V, Dykman L, Khlebtsov B, Staroverov S, Shirokov A, Matora L, Khanadeev V, Pylaev T, Tsyganova N, Terentyuk G. Analytical and theranostic applications of gold nanoparticles and multifunctional nanocomposites. Theranostics 2013; 3:167-80. [PMID: 23471188 PMCID: PMC3590586 DOI: 10.7150/thno.5716] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Accepted: 01/22/2013] [Indexed: 01/10/2023] Open
Abstract
Gold nanoparticles (GNPs) and GNP-based multifunctional nanocomposites are the subject of intensive studies and biomedical applications. This minireview summarizes our recent efforts in analytical and theranostic applications of engineered GNPs and nanocomposites by using plasmonic properties of GNPs and various optical techniques. Specifically, we consider analytical biosensing; visualization and bioimaging of bacterial, mammalian, and plant cells; photodynamic treatment of pathogenic bacteria; and photothermal therapy of xenografted tumors. In addition to recently published reports, we discuss new data on dot immunoassay diagnostics of mycobacteria, multiplexed immunoelectron microscopy analysis of Azospirillum brasilense, materno-embryonic transfer of GNPs in pregnant rats, and combined photodynamic and photothermal treatment of rat xenografted tumors with gold nanorods covered by a mesoporous silica shell doped with hematoporphyrin.
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Cháfer-Pericás C, Maquieira A, Puchades R. Functionalized inorganic nanoparticles used as labels in solid-phase immunoassays. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2011.07.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Dykman L, Khlebtsov N. Gold nanoparticles in biomedical applications: recent advances and perspectives. Chem Soc Rev 2011; 41:2256-82. [PMID: 22130549 DOI: 10.1039/c1cs15166e] [Citation(s) in RCA: 1137] [Impact Index Per Article: 87.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Gold nanoparticles (GNPs) with controlled geometrical, optical, and surface chemical properties are the subject of intensive studies and applications in biology and medicine. To date, the ever increasing diversity of published examples has included genomics and biosensorics, immunoassays and clinical chemistry, photothermolysis of cancer cells and tumors, targeted delivery of drugs and antigens, and optical bioimaging of cells and tissues with state-of-the-art nanophotonic detection systems. This critical review is focused on the application of GNP conjugates to biomedical diagnostics and analytics, photothermal and photodynamic therapies, and delivery of target molecules. Distinct from other published reviews, we present a summary of the immunological properties of GNPs. For each of the above topics, the basic principles, recent advances, and current challenges are discussed (508 references).
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Affiliation(s)
- Lev Dykman
- Institute of Biochemistry and Physiology of Plants and Microorganisms, RAS, 13 Pr. Entuziastov, Saratov 410049, Russian Federation
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Khlebtsov B, Panfilova E, Khanadeev V, Bibikova O, Terentyuk G, Ivanov A, Rumyantseva V, Shilov I, Ryabova A, Loshchenov V, Khlebtsov NG. Nanocomposites containing silica-coated gold-silver nanocages and Yb-2,4-dimethoxyhematoporphyrin: multifunctional capability of IR-luminescence detection, photosensitization, and photothermolysis. ACS NANO 2011; 5:7077-7089. [PMID: 21838309 DOI: 10.1021/nn2017974] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We describe novel composite nanoparticles consisting of a gold-silver nanocage core and a mesoporous silica shell functionalized with the photodynamic sensitizer Yb-2,4-dimethoxyhematoporphyrin (Yb-HP). In addition to the long-wavelength plasmon resonance near 750-800 nm, the composite particles exhibited a 400-nm absorbance peak and two fluorescence peaks, near 580 and 630 nm, corresponding to bound Yb-HP. The fabricated nanocomposites generated singlet oxygen under 630-nm excitation and produced heat under laser irradiation at the plasmon resonance wavelength (750-800 nm). In particular, we observed enhanced killing of HeLa cells incubated with nanocomposites and irradiated by 630-nm light. Furthermore, an additional advantage of fabricated conjugates was an IR-luminescence band (900-1060 nm), originating from Yb(3+) ions of bound Yb-HP and located in the long-wavelength part of the tissue transparency window. This modality was used to control the accumulation and biodistribution of composite particles in mice bearing Ehrlich carcinoma tumors in a comparative study with intravenously injected free Yb-HP molecules. Thus, these multifunctional nanocomposites seem an attractive theranostic platform for simultaneous IR-luminescence diagnostic and photodynamic therapy owing to Yb-HP and for plasmonic photothermal therapy owing to Au-Ag nanocages.
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Affiliation(s)
- Boris Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, Saratov 410049, Russia
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Khlebtsov BN, Panfilova EV, Khanadeev VA, Markin AV, Terentyuk GS, Rumyantseva VD, Ivanov AV, Shilov IP, Khlebtsov NG. Composite multifunctional nanoparticles based on silica-coated gold-silver nanocages functionalized by Yb-hematoporphyrin. ACTA ACUST UNITED AC 2011. [DOI: 10.1134/s1995078011040070] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Baptista PV, Doria G, Quaresma P, Cavadas M, Neves CS, Gomes I, Eaton P, Pereira E, Franco R. Nanoparticles in molecular diagnostics. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 104:427-88. [PMID: 22093226 DOI: 10.1016/b978-0-12-416020-0.00011-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The aim of this chapter is to provide an overview of the available and emerging molecular diagnostic methods that take advantage of the unique nanoscale properties of nanoparticles (NPs) to increase the sensitivity, detection capabilities, ease of operation, and portability of the biodetection assemblies. The focus will be on noble metal NPs, especially gold NPs, fluorescent NPs, especially quantum dots, and magnetic NPs, the three main players in the development of probes for biological sensing. The chapter is divided into four sections: a first section covering the unique physicochemical properties of NPs of relevance for their utilization in molecular diagnostics; the second section dedicated to applications of NPs in molecular diagnostics by nucleic acid detection; and the third section with major applications of NPs in the area of immunoassays. Finally, a concluding section highlights the most promising advances in the area and presents future perspectives.
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Affiliation(s)
- Pedro V Baptista
- Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Centro de Investigação em Genética Molecular Humana (CIGMH), Universidade Nova de Lisboa, Caparica, Portugal
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Khanadeev VA, Khlebtsov BN, Staroverov SA, Vidyasheva IV, Skaptsov AA, Ileneva ES, Bogatyrev VA, Dykman LA, Khlebtsov NG. Quantitative cell bioimaging using gold-nanoshell conjugates and phage antibodies. JOURNAL OF BIOPHOTONICS 2011; 4:74-83. [PMID: 20196025 DOI: 10.1002/jbio.200900093] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2009] [Revised: 02/09/2010] [Accepted: 02/11/2010] [Indexed: 05/28/2023]
Abstract
The authors describe a quantitative evaluation of the efficacy of cell labeling with plasmon-resonant light-scattering nanoparticles used as contrast agents for dark-field microscopy imaging. The experimental model is based on the biospecific labeling of pig embryo kidney (SPEV) cells with primary phage antibodies, followed by the dark-field microscopic visualization using conjugates of silica/gold nanoshells with secondary rabbit antiphage antibodies. To quantify nanoparticle binding, the authors introduce the labeling-efficacy factor (LEF) which is equal to the ratio of the bound-particle pixels per cell to the total number of pixels occupied by the cell. The LEF is calculated by an imaging-analysis algorithm based on the freely available ImageJ Java-based processing code. In terms of the LEF, a distinct difference was found between intact, nonspecifically labeled, and biospecifically labeled cells.
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Affiliation(s)
- Vitaly A Khanadeev
- Department of Biophysics, Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russia
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Khlebtsov N, Dykman L. Biodistribution and toxicity of engineered gold nanoparticles: a review of in vitro and in vivo studies. Chem Soc Rev 2011; 40:1647-71. [DOI: 10.1039/c0cs00018c] [Citation(s) in RCA: 1185] [Impact Index Per Article: 91.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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