1
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Verdin A, Malherbe C, Eppe G. Designing SERS nanotags for profiling overexpressed surface markers on single cancer cells: A review. Talanta 2024; 276:126225. [PMID: 38749157 DOI: 10.1016/j.talanta.2024.126225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/23/2024] [Accepted: 05/06/2024] [Indexed: 06/14/2024]
Abstract
This review focuses on the chemical design and the use of Surface-Enhanced Raman Scattering (SERS)-active nanotags for measuring surface markers that can be overexpressed at the surface of single cancer cells. Indeed, providing analytical tools with true single-cell measurements capabilities is capital, especially since cancer research is increasingly leaning toward single-cell analysis, either to guide treatment decisions or to understand complex tumor behaviour including the single-cell heterogeneity and the appearance of treatment resistance. Over the past two decades, SERS nanotags have triggered significant interest in the scientific community owing their advantages over fluorescent tags, mainly because SERS nanotags resist photobleaching and exhibit sharper signal bands, which reduces possible spectral overlap and enables the discrimination between the SERS signals and the autofluorescence background from the sample itself. The extensive efforts invested in harnessing SERS nanotags for biomedical purposes, particularly in cancer research, highlight their potential as the next generation of optical labels for single-cell studies. The review unfolds in two main parts. The first part focuses on the structure of SERS nanotags, detailing their chemical composition and the role of each building block of the tags. The second part explores applications in measuring overexpressed surface markers on single-cells. The latter encompasses studies using single nanotags, multiplexed measurements, quantitative information extraction, monitoring treatment responses, and integrating phenotype measurements with SERS nanotags on single cells isolated from complex biological matrices. This comprehensive review anticipates SERS nanotags to persist as a pivotal technology in advancing single-cell analytical methods, particularly in the context of cancer research and personalized medicine.
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Affiliation(s)
- Alexandre Verdin
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium.
| | - Cedric Malherbe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium
| | - Gauthier Eppe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium
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2
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Tian X, Yuan Y. Impacts of polyethylene glycol (PEG) dispersity on protein adsorption, pharmacokinetics, and biodistribution of PEGylated gold nanoparticles. RSC Adv 2024; 14:20757-20764. [PMID: 38952930 PMCID: PMC11216039 DOI: 10.1039/d4ra03153a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Accepted: 06/06/2024] [Indexed: 07/03/2024] Open
Abstract
PEGylated gold nanoparticles (PEG-AuNPs) are widely used in drug delivery, imaging and diagnostics, therapeutics, and biosensing. However, the effect of PEG dispersity on the molecular weight (M W) distribution of PEG grafted onto AuNP surfaces has been rarely reported. This study investigates the effect of PEG dispersity on the M W distribution of PEG grafted onto AuNP surfaces and its subsequent impact on protein adsorption and pharmacokinetics, by modifying AuNPs with monodisperse PEG methyl ether thiols (mPEG n -HS, n = 36, 45) and traditional polydisperse mPEG2k-SH (M W = 1900). Polydisperse PEG-AuNPs favor the enrichment of lower M W PEG fractions on their surface due to the steric hindrance effect, which leads to increased protein adsorption. In contrast, monodisperse PEG-AuNPs have a uniform length of PEG outlayer, exhibiting markedly lower yet constant protein adsorption. Pharmacokinetics analysis in tumor-bearing mice demonstrated that monodisperse PEG-AuNPs possess a significantly prolonged blood circulation half-life and enhanced tumor accumulation compared with their polydisperse counterpart. These findings underscore the critical, yet often underestimated, impacts of PEG dispersity on the in vitro and in vivo behavior of PEG-AuNPs, highlighting the role of monodisperse PEG in enhancing therapeutic nanoparticle performance.
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Affiliation(s)
- Xinsheng Tian
- Institute of Smart Biomedical Materials, Zhejiang Sci-Tech University Hangzhou 310018 China
- Biomatrik Inc. 501 Changsheng South Road, Nanhu Jiaxing 314001 China
| | - Yumin Yuan
- Biomatrik Inc. 501 Changsheng South Road, Nanhu Jiaxing 314001 China
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3
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Guido V, Olivieri PH, Brito ML, Prezoto BC, Martinez DST, Oliva MLV, Sousa AA. Stealth and Biocompatible Gold Nanoparticles through Surface Coating with a Zwitterionic Derivative of Glutathione. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:12167-12178. [PMID: 38808371 PMCID: PMC11171461 DOI: 10.1021/acs.langmuir.4c01123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/11/2024] [Accepted: 05/21/2024] [Indexed: 05/30/2024]
Abstract
Gold nanoparticles (AuNPs) hold promise in biomedicine, but challenges like aggregation, protein corona formation, and insufficient biocompatibility must be thoroughly addressed before advancing their clinical applications. Designing AuNPs with specific protein corona compositions is challenging, and strategies for corona elimination, such as coating with polyethylene glycol (PEG), have limitations. In this study, we introduce a commercially available zwitterionic derivative of glutathione, glutathione monoethyl ester (GSHzwt), for the surface coating of colloidal AuNPs. Particles coated with GSHzwt were investigated alongside four other AuNPs coated with various ligands, including citrate ions, tiopronin, glutathione, cysteine, and PEG. We then undertook a head-to-head comparison of these AuNPs to assess their behavior in biological fluid. GSHzwt-coated AuNPs exhibited exceptional resistance to aggregation and protein adsorption. The particles could also be readily functionalized with biotin and interact with streptavidin receptors in human plasma. Additionally, they exhibited significant blood compatibility and noncytotoxicity. In conclusion, GSHzwt provides a practical and easy method for the surface passivation of AuNPs, creating "stealth" particles for potential clinical applications.
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Affiliation(s)
- Vinicius
S. Guido
- Department
of Biochemistry, Federal University of São
Paulo, São
Paulo 04044-020, Brazil
| | - Paulo H. Olivieri
- Department
of Biochemistry, Federal University of São
Paulo, São
Paulo 04044-020, Brazil
| | - Milena L. Brito
- Brazilian
Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo 13083-100, Brazil
| | - Benedito C. Prezoto
- Laboratory
of Pharmacology, the Butantan Institute, São Paulo 05503-900, Brazil
| | - Diego S. T. Martinez
- Brazilian
Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo 13083-100, Brazil
| | - Maria Luiza V. Oliva
- Department
of Biochemistry, Federal University of São
Paulo, São
Paulo 04044-020, Brazil
| | - Alioscka A. Sousa
- Department
of Biochemistry, Federal University of São
Paulo, São
Paulo 04044-020, Brazil
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4
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Duan H, Yang T, Sklyar W, Chen B, Chen Y, Hanson LA, Sun S, Lin Y, He J. Phenylacetylene-Terminated Poly(Ethylene Glycol) as Ligands for Colloidal Noble Metal Nanoparticles: a New Tool for "Grafting to" Approach. NANO LETTERS 2024; 24:5847-5854. [PMID: 38700109 DOI: 10.1021/acs.nanolett.4c01127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
We report a new design of polymer phenylacetylene (PA) ligands and the ligand exchange methodology for colloidal noble metal nanoparticles (NPs). PA-terminated poly(ethylene glycol) (PEG) can bind to metal NPs through acetylide (M-C≡C-R) that affords a high grafting density. The ligand-metal interaction can be switched between σ bonding and extended π backbonding by changing grafting conditions. The σ bonding of PEG-PA with NPs is strong and it can compete with other capping ligands including thiols, while the π backbonding is much weaker. The σ bonding is also demonstrated to improve the catalytic performance of Pd for ethanol oxidation and prevent surface absorption of the reaction intermediates. Those unique binding characteristics will enrich the toolbox in the control of colloidal surface chemistry and their applications using polymer ligands.
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Affiliation(s)
| | | | | | | | - Yuliang Chen
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Lindsey A Hanson
- Department of Chemistry, Trinity College, Hartford, Connecticut 06106, United States
| | - Shouheng Sun
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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5
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Wagner LS, Prymak O, Schaller T, Beuck C, Loza K, Niemeyer F, Gumbiowski N, Kostka K, Bayer P, Heggen M, Oliveira CLP, Epple M. The Molecular Footprint of Peptides on the Surface of Ultrasmall Gold Nanoparticles (2 nm) Is Governed by Steric Demand. J Phys Chem B 2024; 128:4266-4281. [PMID: 38640461 DOI: 10.1021/acs.jpcb.4c01294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2024]
Abstract
Ultrasmall gold nanoparticles were functionalized with peptides of two to seven amino acids that contained one cysteine molecule as anchor via a thiol-gold bond and a number of alanine residues as nonbinding amino acid. The cysteine was located either in the center of the molecule or at the end (C-terminus). For comparison, gold nanoparticles were also functionalized with cysteine alone. The particles were characterized by UV spectroscopy, differential centrifugal sedimentation (DCS), high-resolution transmission electron microscopy (HRTEM), and small-angle X-ray scattering (SAXS). This confirmed the uniform metal core (2 nm diameter). The hydrodynamic diameter was probed by 1H-DOSY NMR spectroscopy and showed an increase in thickness of the hydrated peptide layer with increasing peptide size (up to 1.4 nm for heptapeptides; 0.20 nm per amino acid in the peptide). 1H NMR spectroscopy of water-dispersed nanoparticles showed the integrity of the peptides and the effect of the metal core on the peptide. Notably, the NMR signals were very broad near the metal surface and became increasingly narrow in a distance. In particular, the methyl groups of alanine can be used as probe for the resolution of the NMR spectra. The number of peptide ligands on each nanoparticle was determined using quantitative 1H NMR spectroscopy. It decreased with increasing peptide length from about 100 for a dipeptide to about 12 for a heptapeptide, resulting in an increase of the molecular footprint from about 0.1 to 1.1 nm2.
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Affiliation(s)
- Lisa-Sofie Wagner
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
| | - Oleg Prymak
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
| | - Torsten Schaller
- Organic Chemistry, University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
| | - Christine Beuck
- Institute of Biology and Center for Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
| | - Kateryna Loza
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
| | - Felix Niemeyer
- Organic Chemistry, University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
| | - Nina Gumbiowski
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
| | - Kathrin Kostka
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
| | - Peter Bayer
- Institute of Biology and Center for Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
| | - Marc Heggen
- Ernst Ruska Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich, Jülich 52428, Germany
| | | | - Matthias Epple
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, Essen 45117, Germany
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6
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Unabia RB, Reazo RLD, Rivera RBP, Lapening MA, Omping JL, Lumod RM, Ruda AG, Sayson NLB, Dumancas G, Malaluan RM, Lubguban AA, Petalcorin GC, Capangpangan RY, Latayada FS, Alguno AC. Dopamine-Functionalized Gold Nanoparticles for Colorimetric Detection of Histamine. ACS OMEGA 2024; 9:17238-17246. [PMID: 38645311 PMCID: PMC11025080 DOI: 10.1021/acsomega.3c10123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/15/2024] [Accepted: 03/20/2024] [Indexed: 04/23/2024]
Abstract
Histamine, a primary biogenic amine (BA) generated through the decarboxylation of amino acids, concentration increases in protein-rich foods during deterioration. Thus, its detection plays a crucial role in ensuring food safety and quality. This study introduces an innovative approach involving the direct integration of dopamine onto gold nanoparticles (DCt-AuNP), aiming at rapid histamine colorimetric detection. Transmission electron microscopy revealed the aggregation of uniformly distributed spherical DCt-AuNPs with 12.02 ± 2.53 nm sizes upon the addition of histamine to DCt-AuNP solution. The Fourier-transform infrared (FTIR) spectra demonstrated the disappearance of the dicarboxy acetone peak at 1710 cm-1 along with the formation of well-defined peaks at 1585 cm-1, and 1396 cm-1 associated with the N-H bending modes and the aromatic C=C bond stretching vibration in histamine molecule, respectively, confirming the ligand exchange and interactions of histamine on the surface of DCt-AuNPs. The UV-vis spectra of the DCt-AuNP solution exhibited a red shift and a reduction in surface plasmon resonance (SPR) peak intensity at 518 nm along with the emergence of the 650 nm peak, signifying aggregation DCt-AuNPs with increasing histamine concentration. Notably, color transitions from wine-red to deep blue were observed in the DCt-AuNP solution in response to histamine, providing a reliable colorimetric signal. Dynamic Light Scattering (DLS) characterization showed a significant increase in the hydrodynamic diameter, from ∼15 to ∼1690 nm, confirming the interparticle cross-linking of DCt-AuNPs in the presence of histamine. This newly developed DCt-AuNP sensor provides colorimetric results in less than a minute that exhibits a remarkable naked-eye histamine detection threshold of 1.57 μM and a calculated detection limit of 0.426 μM, making it a promising tool for the rapid and sensitive detection of histamine.
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Affiliation(s)
- Romnick B. Unabia
- Research Center
on Energy Efficient Materials (RCEEM), Premier Research Institute
in Science and Mathematics (PRISM), Mindanao
State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan City 9200, Philippines
| | - Renzo Luis D. Reazo
- Research Center
on Energy Efficient Materials (RCEEM), Premier Research Institute
in Science and Mathematics (PRISM), Mindanao
State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan City 9200, Philippines
| | - Rolen Brian P. Rivera
- Research Center
on Energy Efficient Materials (RCEEM), Premier Research Institute
in Science and Mathematics (PRISM), Mindanao
State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan City 9200, Philippines
| | - Melbagrace A. Lapening
- Research Center
on Energy Efficient Materials (RCEEM), Premier Research Institute
in Science and Mathematics (PRISM), Mindanao
State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan City 9200, Philippines
| | - Jahor L. Omping
- Research Center
on Energy Efficient Materials (RCEEM), Premier Research Institute
in Science and Mathematics (PRISM), Mindanao
State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan City 9200, Philippines
| | - Ryan M. Lumod
- Research Center
on Energy Efficient Materials (RCEEM), Premier Research Institute
in Science and Mathematics (PRISM), Mindanao
State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan City 9200, Philippines
| | - Archie G. Ruda
- Research Center
on Energy Efficient Materials (RCEEM), Premier Research Institute
in Science and Mathematics (PRISM), Mindanao
State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan City 9200, Philippines
| | - Noel Lito B. Sayson
- Research Center
on Energy Efficient Materials (RCEEM), Premier Research Institute
in Science and Mathematics (PRISM), Mindanao
State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan City 9200, Philippines
| | - Gerard Dumancas
- Department of Chemistry, Loyola Science
Center, The University of Scranton, Scranton, Pennsylvania 18510, United States
| | - Roberto M. Malaluan
- Center for Sustainable Polymers, MSU-Iligan
Institute of Technology, Iligan
City 9200, Philippines
| | - Arnold A. Lubguban
- Center for Sustainable Polymers, MSU-Iligan
Institute of Technology, Iligan
City 9200, Philippines
| | - Gaudencio C. Petalcorin
- Department of Mathematics and Statistics, Mindanao State University-Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Rey Y. Capangpangan
- Mindanao State
University at Naawan Campus, Naawan
Misamis Oriental 9023, Philippines
| | - Felmer S. Latayada
- Caraga State University-Main Campus, Ampayon, Butuan City 8600, Philippines
| | - Arnold C. Alguno
- Research Center
on Energy Efficient Materials (RCEEM), Premier Research Institute
in Science and Mathematics (PRISM), Mindanao
State University − Iligan Institute of Technology, A. Bonifacio Avenue, Iligan City 9200, Philippines
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7
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Boselli L, Castagnola V, Armirotti A, Benfenati F, Pompa PP. Biomolecular Corona of Gold Nanoparticles: The Urgent Need for Strong Roots to Grow Strong Branches. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306474. [PMID: 38085683 DOI: 10.1002/smll.202306474] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 10/20/2023] [Indexed: 04/13/2024]
Abstract
Gold nanoparticles (GNPs) are largely employed in diagnostics/biosensors and are among the most investigated nanomaterials in biology/medicine. However, few GNP-based nanoformulations have received FDA approval to date, and promising in vitro studies have failed to translate to in vivo efficacy. One key factor is that biological fluids contain high concentrations of proteins, lipids, sugars, and metabolites, which can adsorb/interact with the GNP's surface, forming a layer called biomolecular corona (BMC). The BMC can mask prepared functionalities and target moieties, creating new surface chemistry and determining GNPs' biological fate. Here, the current knowledge is summarized on GNP-BMCs, analyzing the factors driving these interactions and the biological consequences. A partial fingerprint of GNP-BMC analyzing common patterns of composition in the literature is extrapolated. However, a red flag is also risen concerning the current lack of data availability and regulated form of knowledge on BMC. Nanomedicine is still in its infancy, and relying on recently developed analytical and informatic tools offers an unprecedented opportunity to make a leap forward. However, a restart through robust shared protocols and data sharing is necessary to obtain "stronger roots". This will create a path to exploiting BMC for human benefit, promoting the clinical translation of biomedical nanotools.
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Affiliation(s)
- Luca Boselli
- Nanobiointeractions & Nanodiagnostics, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
| | - Valentina Castagnola
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, Largo Rosanna Benzi 10, Genova, 16132, Italy
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, Genova, 16132, Italy
| | - Andrea Armirotti
- Analytical Chemistry Lab, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16163, Italy
| | - Fabio Benfenati
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, Largo Rosanna Benzi 10, Genova, 16132, Italy
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, Genova, 16132, Italy
| | - Pier Paolo Pompa
- Nanobiointeractions & Nanodiagnostics, Istituto Italiano di Tecnologia (IIT), Via Morego 30, Genova, 16163, Italy
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8
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Omping J, Unabia R, Reazo RL, Lapening M, Lumod R, Ruda A, Rivera RB, Sayson NL, Latayada F, Capangpangan R, Dumancas G, Malaluan R, Lubguban A, Petalcorin G, Alguno A. Facile Synthesis of PEGylated Gold Nanoparticles for Enhanced Colorimetric Detection of Histamine. ACS OMEGA 2024; 9:14269-14278. [PMID: 38559990 PMCID: PMC10975633 DOI: 10.1021/acsomega.3c10050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/25/2024] [Accepted: 02/28/2024] [Indexed: 04/04/2024]
Abstract
Histamine is among the biogenic amines that are formed during the microbial decarboxylation of amino acids in various food products, posing a significant threat to both food safety and human health. Herein, we present a one-step synthesis of PEGylated gold nanoparticles (PEG-AuNPs) for rapid, simple, and cost-effective colorimetric histamine detection. PEG-AuNPs' surface plasmon resonance (SPR) range at 520-530 nm with a hydrodynamic size distribution of 20-40 nm. Fourier transform infrared (FT-IR) spectra confirmed the reduction of AuNPs at 1645 cm-1 along with the other observed peaks at 2870, 1350, and 1100 cm-1 as a strong evidence for the presence of PEG. Upon the addition of histamine to the PEG-AuNP solution, transmission electron microscopy (TEM) highlighted the aggregation of nanoparticles. In addition, red shifting and a decrease in the absorbance of the SPR peak along with the appearance of an additional peak at ∼690 nm was observed in the PEG-AuNP absorption spectra in the presence of histamine. Increasing the PEG concentration in the gold colloids leads to the formation of a protective barrier around the surface of nanoparticles, which influences the colloidal stability by impeding the aggregation of PEG-AuNPs upon histamine addition. The minimum colorimetric response of PEG-AuNPs to histamine concentration is 30 ppm, as assessed by the naked eye. The absorption ratio (A690/A526) showed a linear dynamic range from 20 to 100 ppm with a limit of detection of 9.357 μM. Additionally, the assay demonstrates a commendable selectivity toward histamine analyte.
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Affiliation(s)
- Jahor Omping
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
| | - Romnick Unabia
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
| | - Renzo Luis Reazo
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
| | - Melbagrace Lapening
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
| | - Ryan Lumod
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
- Department
of Physics, Mindanao State University-Iligan
Institute of Technology, 9200 Iligan City, Philippines
| | - Archie Ruda
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
| | - Rolen Brian Rivera
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
- Department
of Physics, Mindanao State University-Iligan
Institute of Technology, 9200 Iligan City, Philippines
| | - Noel Lito Sayson
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
- Department
of Physics, Mindanao State University-Iligan
Institute of Technology, 9200 Iligan City, Philippines
| | - Felmer Latayada
- Department
of Chemistry, Caraga State University, Butuan City 8600, Philippines
| | - Rey Capangpangan
- Department
of Physical Sciences and Mathematics, College of Marine and Allied
Sciences, Mindanao State University at Naawan, Naawan 9023, Misamis Oriental, Philippines
| | - Gerard Dumancas
- Department
of Chemistry, Loyola Science Center, The
University of Scranton, Scranton, Pennsylvania 18510, United States
| | - Roberto Malaluan
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
- Center for
Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan City 9200, Philippines
| | - Arnold Lubguban
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
- Center for
Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan City 9200, Philippines
| | - Gaudencio Petalcorin
- Department
of Mathematics and Statistics, Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
| | - Arnold Alguno
- Research
Center for Energy Efficient Materials (RCEEM), Premier Research Institute
of Science and Mathematics (PRISM), Mindanao
State University-Iligan Institute of Technology, 9200 Iligan City, Philippines
- Department
of Physics, Mindanao State University-Iligan
Institute of Technology, 9200 Iligan City, Philippines
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9
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Wu Z, Bayón JL, Kouznetsova TB, Ouchi T, Barkovich KJ, Hsu SK, Craig SL, Steinmetz NF. Virus-like Particles Armored by an Endoskeleton. NANO LETTERS 2024; 24:2989-2997. [PMID: 38294951 DOI: 10.1021/acs.nanolett.3c03806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Many virus-like particles (VLPs) have good chemical, thermal, and mechanical stabilities compared to those of other biologics. However, their stability needs to be improved for the commercialization and use in translation of VLP-based materials. We developed an endoskeleton-armored strategy for enhancing VLP stability. Specifically, the VLPs of physalis mottle virus (PhMV) and Qβ were used to demonstrate this concept. We built an internal polymer "backbone" using a maleimide-PEG15-maleimide cross-linker to covalently interlink viral coat proteins inside the capsid cavity, while the native VLPs are held together by only noncovalent bonding between subunits. Endoskeleton-armored VLPs exhibited significantly improved thermal stability (95 °C for 15 min), increased resistance to denaturants (i.e., surfactants, pHs, chemical denaturants, and organic solvents), and enhanced mechanical performance. Single-molecule force spectroscopy demonstrated a 6-fold increase in rupture distance and a 1.9-fold increase in rupture force of endoskeleton-armored PhMV. Overall, this endoskeleton-armored strategy provides more opportunities for the development and applications of materials.
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Affiliation(s)
- Zhuohong Wu
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
- Center for Nano-ImmunoEngineering, University of California, San Diego, La Jolla, California 92093, United States
- Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, United States
- Shu and K. C. Chien and Peter Farrell Collaboratory, University of California, San Diego, La Jolla, California 92093, United States
| | - Jorge L Bayón
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
- Center for Nano-ImmunoEngineering, University of California, San Diego, La Jolla, California 92093, United States
- Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, United States
- Shu and K. C. Chien and Peter Farrell Collaboratory, University of California, San Diego, La Jolla, California 92093, United States
| | - Tatiana B Kouznetsova
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Tetsu Ouchi
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Krister J Barkovich
- Center for Nano-ImmunoEngineering, University of California, San Diego, La Jolla, California 92093, United States
- Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, United States
- Shu and K. C. Chien and Peter Farrell Collaboratory, University of California, San Diego, La Jolla, California 92093, United States
- Department of Radiology, University of California, San Diego, La Jolla, California 92093, United States
| | - Sean K Hsu
- Center for Nano-ImmunoEngineering, University of California, San Diego, La Jolla, California 92093, United States
- Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, United States
- Shu and K. C. Chien and Peter Farrell Collaboratory, University of California, San Diego, La Jolla, California 92093, United States
- Department of Molecular Biology, University of California, San Diego, La Jolla, California 92093, United States
| | - Stephen L Craig
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Nicole F Steinmetz
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
- Center for Nano-ImmunoEngineering, University of California, San Diego, La Jolla, California 92093, United States
- Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, United States
- Shu and K. C. Chien and Peter Farrell Collaboratory, University of California, San Diego, La Jolla, California 92093, United States
- Department of Radiology, University of California, San Diego, La Jolla, California 92093, United States
- Department of Molecular Biology, University of California, San Diego, La Jolla, California 92093, United States
- Department of Bioengineering, University of California, San Diego, La Jolla, California 92093, United States
- Institute for Materials Discovery and Design, University of California, San Diego, La Jolla, California 92093, United States
- Center for Engineering in Cancer, Institute for Engineering in Medicine, University of California, San Diego, La Jolla, California 92093, United States
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10
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Lindstaedt A, Doroszuk J, Machnikowska A, Dziadosz A, Barski P, Raffa V, Witt D. Effects Induced by the Temperature and Chemical Environment on the Fluorescence of Water-Soluble Gold Nanoparticles Functionalized with a Perylene-Derivative Dye. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1097. [PMID: 38473569 DOI: 10.3390/ma17051097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024]
Abstract
We developed a fluorescent molecular probe based on gold nanoparticles functionalized with N,N'-bis(2-(1-piperazino)ethyl)-3,4,9,10-perylenetetracarboxylic acid diimide dihydrochloride, and these probes exhibit potential for applications in microscopic thermometry. The intensity of fluorescence was affected by changes in temperature. Chemical environments, such as different buffers with the same pH, also resulted in different fluorescence intensities. Due to the fluorescence intensity changes exhibited by modified gold nanoparticles, these materials are promising candidates for future technologies involving microscopic temperature measurements.
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Affiliation(s)
| | | | | | - Alicja Dziadosz
- ProChimia Surfaces Sp. z o.o., Zacisze 2, 81-850 Sopot, Poland
| | - Piotr Barski
- ProChimia Surfaces Sp. z o.o., Zacisze 2, 81-850 Sopot, Poland
| | - Vittoria Raffa
- Dipartimento di Biologia, Università di Pisa, S.S. 12 Abetone e Brennero, 4 56127 Pisa, Italy
| | - Dariusz Witt
- Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland
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11
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Talarska P, Błaszkiewicz P, Kostrzewa A, Wirstlein P, Cegłowski M, Nowaczyk G, Dudkowiak A, Grabarek BO, Głowacka-Stalmach P, Szarpak A, Żurawski J. Effects of Spherical and Rod-like Gold Nanoparticles on the Reactivity of Human Peripheral Blood Leukocytes. Antioxidants (Basel) 2024; 13:157. [PMID: 38397755 PMCID: PMC10885998 DOI: 10.3390/antiox13020157] [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: 12/30/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 02/25/2024] Open
Abstract
Gold nanoparticles (GNPs) are widely used in the technological and biomedical industries, which is a major driver of research on these nanoparticles. The main goal of this study was to determine the influence of GNPs (at 20, 100, and 200 μg/mL concentrations) on the reactivity of human peripheral blood leukocytes. Flow cytometry was used to evaluate the respiratory burst activity and pyroptosis in monocytes and granulocytes following incubation with GNPs for 30 and 60 min. Furthermore, the concentration of interleukin-1β (IL-1β) in human blood samples was assessed using enzyme-linked immunosorbent assay (ELISA) after their incubation with GNPs for 24 h. Under the conditions tested in the study, the GNPs did not significantly affect the production of reactive oxygen species in the granulocytes and monocytes that were not stimulated using phorbol 12-myristate 13-acetate (PMA) in comparison to the samples exposed to PMA (p < 0.05). Compared to the control sample, the greatest significant increase in the mean fluorescence intensity of the granulocytes occurred in the samples incubated with CGNPs = 100 and 200 µg/mL for tinc = 30 and 60 min (p < 0.05). From our results, we conclude that the physicochemical properties of the nanoparticles, chemical composition, and the type of nanoparticles used in the unit, along with the unit and incubation time, influence the induced toxicity.
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Affiliation(s)
- Patrycja Talarska
- Department of Immunobiology, Poznan University of Medical Sciences, 60-806 Poznan, Poland; (A.K.); (J.Ż.)
| | - Paulina Błaszkiewicz
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, 60-965 Poznan, Poland; (P.B.); (A.D.)
| | - Artur Kostrzewa
- Department of Immunobiology, Poznan University of Medical Sciences, 60-806 Poznan, Poland; (A.K.); (J.Ż.)
| | - Przemysław Wirstlein
- Division of Reproduction, Department of Obstetrics, Gynecology, and Gynecologic Oncology, Poznan University of Medical Sciences, 60-535 Poznan, Poland;
| | - Michał Cegłowski
- Faculty of Chemistry, Adam Mickiewicz University Poznań, 61-614 Poznan, Poland;
| | - Grzegorz Nowaczyk
- NanoBioMedical Centre, Adam Mickiewicz University Poznań, 61-614 Poznan, Poland;
| | - Alina Dudkowiak
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, 60-965 Poznan, Poland; (P.B.); (A.D.)
| | | | | | - Agnieszka Szarpak
- Faculty of Medicine, Uczelnia Medyczna im. Marii Skłodowskiej-Curie, 00-136 Warszawa, Poland;
| | - Jakub Żurawski
- Department of Immunobiology, Poznan University of Medical Sciences, 60-806 Poznan, Poland; (A.K.); (J.Ż.)
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12
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Lustig DR, Buz E, Mulvey JT, Patterson JP, Kittilstved KR, Sambur JB. Characterizing the Ligand Shell Morphology of PEG-Coated ZnO Nanocrystals Using FRET Spectroscopy. J Phys Chem B 2023; 127:8961-8973. [PMID: 37802098 DOI: 10.1021/acs.jpcb.3c04900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2023]
Abstract
Poly(ethylene glycol) (PEG) ligands can inhibit proteins and other biomolecules from adhering to underlying surfaces, making them excellent surface ligands for nanocrystal (NC)-based drug carriers. Quantifying the PEG ligand shell morphology is important because its structure determines the permeability of biomolecules through the shell to the NC surface. However, few in situ analytical tools can reveal whether the PEG ligands form either an impenetrable barrier or a porous coating surrounding the NC. Here, we present a Förster resonance energy transfer (FRET) spectroscopy-based approach that can assess the permeability of molecules through PEG-coated ZnO NCs. In this approach, ZnO NCs serve as FRET donors, and freely diffusing molecules in the bulk solution are FRET acceptors. We synthesized a series of variable chain length PEG-silane-coated ZnO NCs such that the longest chain length ligands far exceed the Förster radius (R0), where the energy transfer (EnT) efficiency is 50%. We quantified the EnT efficiency as a function of the ligand chain length using time-resolved photoluminescence lifetime (TRPL) spectroscopy within the framework of FRET theory. Unexpectedly, the longest PEG-silane ligand showed equivalent EnT efficiency as that of bare, hydroxyl-passivated ZnO NCs. These results indicate that the "rigid shell" model fails and the PEG ligand shell morphology is more likely porous or in a patchy "mushroom state", consistent with transmission electron microscopy data. While the spectroscopic measurements and data analysis procedures discussed herein cannot directly visualize the ligand shell morphology in real space, the in situ spectroscopy approach can provide researchers with valuable information regarding the permeability of species through the ligand shell under practical biological conditions.
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Affiliation(s)
- Danielle R Lustig
- Department of Chemistry, Colorado State University, 200 West Lake Street, Fort Collins, Colorado 80523-1872, United States
| | - Enes Buz
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Justin T Mulvey
- Center for Complex and Active Materials, University of California, Irvine, Irvine, California 92697-2025, United States
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Joseph P Patterson
- Center for Complex and Active Materials, University of California, Irvine, Irvine, California 92697-2025, United States
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Kevin R Kittilstved
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Justin B Sambur
- Department of Chemistry, Colorado State University, 200 West Lake Street, Fort Collins, Colorado 80523-1872, United States
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13
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Zámbó D, Kovács D, Südi G, Zolnai Z, Deák A. Composite ligand shells on gold nanoprisms - an ensemble and single particle study. RSC Adv 2023; 13:30696-30703. [PMID: 37869380 PMCID: PMC10585614 DOI: 10.1039/d3ra05548e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/11/2023] [Indexed: 10/24/2023] Open
Abstract
The attachment of thiolated molecules onto gold surfaces is one of the most extensively used and robust ligand exchange approaches to exploit the nanooptical features of nanoscale and nanostructured plasmonic materials. In this work, the impact of thiol adsorption on the optical properties of wet-chemically synthesized gold nanoprisms is studied both at the ensemble and single particle level to investigate the build-up of more complex ligand layers. Two prototypical ligands with different lengths have been investigated ((16-mercaptohexadecyl)trimethylammonium bromide - MTAB and thiolated polyethylene glycol - mPEG-SH). From ensemble experiments it is found that composite ligand layers are obtained by the sequential addition of the two thiols, and an island-like surface accumulation of the molecules can be anticipated. The single particle experiment derived chemical interface damping and resonance energy changes further support this and show additionally that when the two thiols are used simultaneously, a higher density, intermixed layer is formed. Hence, when working with more than a single type of ligand during surface modification, sequential adsorption is preferred for the combination of accessible essential surface functionalities, whereas for high overall loading the simultaneous use of the different ligand types is favourable.
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Affiliation(s)
- Dániel Zámbó
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
| | - Dávid Kovács
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
- Budapest University of Technology and Economics, Department of Physical Chemistry and Materials Science Budafoki Str. 6-8 Budapest 1117 Hungary
| | - Gergely Südi
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
- Budapest University of Technology and Economics, Department of Physical Chemistry and Materials Science Budafoki Str. 6-8 Budapest 1117 Hungary
| | - Zsolt Zolnai
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
| | - András Deák
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
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14
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Amestoy A, Rangra A, Mansard V, Saya D, Pouget E, Mazaleyrat E, Severac F, Bergaud C, Oda R, Delville MH. Highly Stable Low-Strain Flexible Sensors Based on Gold Nanoparticles/Silica Nanohelices. ACS APPLIED MATERIALS & INTERFACES 2023; 15:39480-39493. [PMID: 37556291 DOI: 10.1021/acsami.3c05852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Flexible strain sensors based on nanoparticle (NP) arrays show great potential for future applications such as electronic skin, flexible touchscreens, healthcare sensors, and robotics. However, even though these sensors can exhibit high sensitivity, they are usually not very stable under mechanical cycling and often exhibit large hysteresis, making them unsuitable for practical applications. In this work, strain sensors based on silica nanohelix (NH) arrays grafted with gold nanoparticles (AuNPs) can overcome these critical aspects. These 10 nm AuNPs are functionalized with mercaptopropionic acid (MPA) and different ratios of thiol-polyethylene glycol-carboxylic acid (HS-PEG7-COOH) to optimize the colloidal stability of the resulting NH@AuNPs nanocomposite suspensions, control their aggregation state, and tune the thickness of the insulating layer. They are then grafted covalently onto the surface of the NHs by chemical coupling. These nanomaterials exhibit a well-defined arrangement of AuNPs, which follows the helicity of the silica template. The modified NHs are then aligned by dielectrophoresis (DEP) between interdigitated electrodes on a flexible substrate. The flexibility, stability, and especially sensitivity of these sensors are then characterized by electromechanical measurements and scanning electron microscopy observations. These strain sensors based on NH@AuNPs nanocomposites are much more stable than those containing only nanoparticles and exhibit significantly reduced hysteresis and high sensitivity at very slight strains. They can retain their sensitivity even after 2 million consecutive cycles with virtually unchanged responsiveness. These improved performances come from their mechanical stability and the use of nanohelices as stable mechanical templates.
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Affiliation(s)
- Antoine Amestoy
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, 87 avenue du Dr. A. Schweitzer, Pessac F-33608, France
- CNRS, Univ. Bordeaux, Bordeaux INP, Chimie et Biologie des Membranes et des Nanoobjets, 33607 Pessac, France
| | - Aarushee Rangra
- Laboratoire d'Analyse et d'Architecture des Systèmes, LAAS-CNRS, University of Toulouse, 7 avenue du Colonel Roche, Toulouse F-31400, France
| | - Vincent Mansard
- Laboratoire d'Analyse et d'Architecture des Systèmes, LAAS-CNRS, University of Toulouse, 7 avenue du Colonel Roche, Toulouse F-31400, France
| | - Daisuke Saya
- Laboratoire d'Analyse et d'Architecture des Systèmes, LAAS-CNRS, University of Toulouse, 7 avenue du Colonel Roche, Toulouse F-31400, France
| | - Emilie Pouget
- CNRS, Univ. Bordeaux, Bordeaux INP, Chimie et Biologie des Membranes et des Nanoobjets, 33607 Pessac, France
| | | | - Fabrice Severac
- NANOMADE LAB, 3 rue des Satellites, Toulouse F-31400, France
| | - Christian Bergaud
- Laboratoire d'Analyse et d'Architecture des Systèmes, LAAS-CNRS, University of Toulouse, 7 avenue du Colonel Roche, Toulouse F-31400, France
| | - Reiko Oda
- CNRS, Univ. Bordeaux, Bordeaux INP, Chimie et Biologie des Membranes et des Nanoobjets, 33607 Pessac, France
| | - Marie-Hélène Delville
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, 87 avenue du Dr. A. Schweitzer, Pessac F-33608, France
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15
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Buchheit R, Niebuur BJ, González-García L, Kraus T. Surface polarization, field homogeneity, and dielectric breakdown in ordered and disordered nanodielectrics based on gold-polystyrene superlattices. NANOSCALE 2023; 15:7526-7536. [PMID: 37022092 DOI: 10.1039/d3nr01038d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Hybrid dielectrics were prepared from dispersions of nanoparticles with gold cores (diameters from 2.9 nm to 8.2 nm) and covalently bound thiol-terminated polystyrene shells (5000 Da and 11 000 Da) in toluene. Their microstructure was investigated with small angle X-ray scattering and transmission electron microscopy. The particles arranged in nanodielectric layers with either face-centered cubic or random packing, depending on the ligand length and core diameter. Thin film capacitors were prepared by spin-coating inks on silicon substrates, contacted with sputtered aluminum electrodes, and characterized with impedance spectroscopy between 1 Hz and 1 MHz. The dielectric constants were dominated by polarization at the gold-polystyrene interfaces that we could precisely tune via the core diameter. There was no difference in the dielectric constant between random and supercrystalline particle packings, but the dielectric losses depended on the layer structure. A model that combines Maxwell-Wagner-Sillars theory and percolation theory described the relationship of the specific interfacial area and the dielectric constant quantitatively. The electric breakdown of the nanodielectric layers sensitively depended on particle packing. A highest breakdown field strength of 158.7 MV m-1 was found for the sample with 8.2 nm cores and short ligands that had a face-centered cubic structure. Breakdown apparently is initiated at the microscopic maxima of the electric field that depends on particle packing. The relevance of the results for industrially produced devices was demonstrated on inkjet printed thin film capacitors with an area of 0.79 mm2 on aluminum coated PET foils that retained their capacity of 1.24 ± 0.01 nF@10 kHz during 3000 bending cycles.
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Affiliation(s)
- Roman Buchheit
- INM-Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Bart-Jan Niebuur
- INM-Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Lola González-García
- INM-Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
- Department of Materials Science and Engineering, Saarland University, Campus D2 2, 66123 Saarbrücken, Germany.
| | - Tobias Kraus
- INM-Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
- Colloid and Interface Chemistry, Saarland University, Campus D2 2, 66123 Saarbrücken, Germany.
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16
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Amornwairat P, Pissuwan D. Colorimetric Sensing of Gram-Negative and Gram-Positive Bacteria Using 4-Mercaptophenylboronic Acid-Functionalized Gold Nanoparticles in the Presence of Polyethylene Glycol. ACS OMEGA 2023; 8:13456-13464. [PMID: 37065017 PMCID: PMC10099429 DOI: 10.1021/acsomega.3c01205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 03/21/2023] [Indexed: 06/19/2023]
Abstract
Gold nanoparticles (GNPs) have been used as detection probes for rapid and sensitive detection of various analytes, including bacteria. Here, we demonstrate a simple strategy for bacterial detection using GNPs functionalized with 4-mercaptophenylboronic acid (4-MPBA). 4-MPBA can interact with peptidoglycan or lipopolysaccharides present in bacterial organelles. After the addition of a high concentration of sodium hydroxide (NaOH), the functionalization of the surface of 50 nm GNPs with 4-MPBA (4-MPBA@GNPs) in the presence of polyethylene glycol results in a color change because of the aggregation of 4-MPBA@GNPs. This color change is dependent on the amount of bacteria present in the tested samples. Escherichia coli (E. coli) K-12 and Staphylococcus aureus (S. aureus) are used as Gram-negative and Gram-positive bacterial models, respectively. The color change can be detected within an hour by the naked eye. A linear relationship is observed between bacterial concentrations and the absorbance intensity at 533 nm; R 2 values of 0.9152 and 0.8185 are obtained for E. coli K-12 and S. aureus, respectively. The limit of detection of E. coli K-12 is ∼2.38 × 102 CFU mL-1 and that of S. aureus is ∼4.77 × 103 CFU mL-1. This study provides a promising approach for the rapid detection of target Gram-negative and Gram-positive bacteria.
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Affiliation(s)
- Pinyapat Amornwairat
- Materials
and Engineering Graduate Program, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Payathai, Bangkok 10400, Thailand
- Nanobiotechnology
and Nanobiomaterials Research Laboratory, School of Materials Science
and Innovation, Faculty of Science, Mahidol
University, Rama VI Road, Ratchathewi, Payathai, Bangkok 10400, Thailand
| | - Dakrong Pissuwan
- Materials
and Engineering Graduate Program, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Payathai, Bangkok 10400, Thailand
- Nanobiotechnology
and Nanobiomaterials Research Laboratory, School of Materials Science
and Innovation, Faculty of Science, Mahidol
University, Rama VI Road, Ratchathewi, Payathai, Bangkok 10400, Thailand
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17
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Robert J, S Chauhan D, Cherraj A, Buiel J, De Crescenzo G, Banquy X. Coiled-coil peptide-based assembly of a plasmonic core-satellite polymer-metal nanocomposite as an efficient photothermal agent for drug delivery applications. J Colloid Interface Sci 2023; 641:929-941. [PMID: 36989819 DOI: 10.1016/j.jcis.2023.03.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 02/22/2023] [Accepted: 03/12/2023] [Indexed: 03/18/2023]
Abstract
Polymer-metal nanocomposites have widespread applications in biomedical fields such as imaging, catalysis, and drug delivery. These particles are characterized by combined organic and inorganic properties. Specifically, photothermal nanocomposites incorporating polymeric and plasmonic nanoparticles (NPs) have been designed for both triggered drug release and as imaging agents. However, the usual design of nanocomposites confers characteristic issues, among which are the decrease of optical properties and resulting low photothermal efficiency, as well as interactions with loaded drugs. Herein, we report the design of a core-satellite polymer-metal nanocomposite assembled by coiled-coil peptides and its superior photothermal efficiency compared to electrostatic-driven nanocomposites which is the standard design. We also found that the orientation of gold nanorods on the surface of polymeric NPs is of importance in the final photothermal efficiency and could be exploited for various applications. Our findings provide an alternative to current wrapping and electrostatic assembly of nanocomposites with the help of coiled-coil peptides and an improvement of the control over core-satellite assemblies with plasmonic NPs. It paves the way to highly versatile assemblies due to the nature of coiled-coil peptides to be easily modified and sensitive to pH or temperature.
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Affiliation(s)
- Jordan Robert
- Faculty of Pharmacy, Université de Montréal, Montréal H3T 1J4, Québec, Canada
| | - Deepak S Chauhan
- Faculty of Pharmacy, Université de Montréal, Montréal H3T 1J4, Québec, Canada
| | - Amel Cherraj
- Faculty of Medicine, Université de Lorraine, Metz 57000, France
| | - Jonathan Buiel
- Department of Biomedical Engineering, Faculty of Medicine, Université de Montréal, Montréal H3T 1J4, Québec, Canada
| | - Gregory De Crescenzo
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales (GRSTB), Bio-P2 Research Unit, Polytechnique Montréal, Montréal H3T 1J4, Québec, Canada
| | - Xavier Banquy
- Faculty of Pharmacy, Université de Montréal, Montréal H3T 1J4, Québec, Canada; Department of Biomedical Engineering, Faculty of Medicine, Université de Montréal, Montréal H3T 1J4, Québec, Canada; Department of Chemistry, Faculty of Arts and Science, Université de Montréal, Montréal H3T 1J4, Québec, Canada.
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18
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Sarkis M, Minassian G, Mitri N, Rahme K, Fracasso G, El Hage R, Ghanem E. D2B-Functionalized Gold Nanoparticles: Promising Vehicles for Targeted Drug Delivery to Prostate Cancer. ACS APPLIED BIO MATERIALS 2023; 6:819-827. [PMID: 36755401 PMCID: PMC9945086 DOI: 10.1021/acsabm.2c00975] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Despite the multitude of therapeutic agents available to treat prostate cancer (PC), there are still no effective and safe measures to treat the tumor. It remains a challenge to develop a simple approach to target PC with specific antibodies. In our study, D2B monoclonal antibodies against a prostate-specific membrane antigen (PSMA) were used. We investigated the functionalization of gold nanoparticles (AuNPs) with D2B to generate favorable physicochemical and biological properties that mediate specific binding to PC. For this purpose, AuNPs with a size of about 25 nm were synthesized in water using sodium citrate as a reducing and stabilizing agent and then coated with D2B. Major physicochemical properties of naked and D2B-coated AuNPs were investigated by ultraviolet-visible (UV-vis) spectroscopy, dynamic light scattering (DLS), and zeta potential measurements. The successful binding of D2B to AuNPs-citrate caused a 15 nm red shift in the UV-vis. This was assessed by DLS as an increase in zeta potential from ∼-45 to ∼-23 mV and in the size of AuNPs from ∼25 to ∼63 nm. Scanning electron microscopy confirmed the size shift of AuNPs, which was detected as an exterior organic layer of D2Bs surrounding each AuNP. Even at high exposure levels of the bioconjugates, PSMA-PC-3 cells exhibited minimal cytotoxicity. The specific and dose-dependent binding of AuNPs-D2B to PC-3-PSMA cells was validated by flow cytometry analysis. Our data provide effective drug delivery systems in PC theranostics.
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Affiliation(s)
- Monira Sarkis
- Department of Sciences, Notre Dame University-Louaize, 72 Zouk Mosbeh, Lebanon
| | - Georges Minassian
- Department of Sciences, Notre Dame University-Louaize, 72 Zouk Mosbeh, Lebanon
| | - Nadim Mitri
- Department of Sciences, Notre Dame University-Louaize, 72 Zouk Mosbeh, Lebanon
| | - Kamil Rahme
- Department of Sciences, Notre Dame University-Louaize, 72 Zouk Mosbeh, Lebanon.,School of Chemistry & AMBER Centre, University College Cork, T12 YN60 Cork, Ireland
| | - Giulio Fracasso
- Department of Medicine, University of Verona, I-37134 Verona, Italy
| | - Roland El Hage
- Laboratory of Physical Chemistry of Materials (LCPM), PR2N (EDST), Faculty of Sciences II, Lebanese University, Campus Fanar P.O. Box 90656, 1103 Beirut, Lebanon.,Polymers Composites and Hybrids (PCH), IMT Mines Ales, 30100 Ales, France
| | - Esther Ghanem
- Department of Sciences, Notre Dame University-Louaize, 72 Zouk Mosbeh, Lebanon.,biobank.cy-Center of Excellence in Biobanking and Biomedical Research, Molecular Medicine Research Center, University of Cyprus, 1678 Nicosia, Cyprus
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19
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Guo Y, Ma Y, Chen X, Li M, Ma X, Cheng G, Xue C, Zuo YY, Sun B. Mucus Penetration of Surface-Engineered Nanoparticles in Various pH Microenvironments. ACS NANO 2023; 17:2813-2828. [PMID: 36719858 DOI: 10.1021/acsnano.2c11147] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The penetration behavior of nanoparticles in mucous depends on physicochemical properties of the nanoparticles and the mucus microenvironment, due to particle-mucin interactions and the presence of the mucin mesh space filtration effect. To date, it is still unclear how the surface properties of nanoparticles influence their mucus penetration behaviors in various physiological and pathophysiological conditions. In this study, we have prepared a comprehensive library of amine-, carboxyl-, and PEG-modified silica nanoparticles (SNPs) with controlled surface ligand densities. Using multiple particle tracking, we have studied the mechanism responsible for the mucus penetration behaviors of these SNPs. It was found that PEG- and amine-modified SNPs exhibited pH-independent immobilization under iso-density conditions, while carboxyl-modified SNPs exhibited enhanced movement only in weakly alkaline mucus. Biophysical characterizations demonstrated that amine- and carboxyl-modified SNPs were trapped in mucus due to electrostatic interactions and hydrogen bonding with mucin. In contrast, high-density PEGylated surface formed a brush conformation that shields particle-mucin interactions. We have further investigated the surface property-dependent mucus penetration behavior using a murine airway distribution model. This study provides insights for designing efficient transmucosal nanocarriers for prevention and treatment of pulmonary diseases.
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Affiliation(s)
- Yiyang Guo
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Yubin Ma
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Xin Chen
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Min Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Xuehu Ma
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Gang Cheng
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois60607, United States
| | - Changying Xue
- School of Bioengineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Yi Y Zuo
- Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, Hawaii96822, United States
| | - Bingbing Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
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20
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Hu Y, Zhang Q, Garcia-Rojas D, Ling V, Masterson CM, Bi Y, Xiao Z, Guo X, Villanova J, Dunn J, Colvin VL. Increasing the antioxidant capacity of ceria nanoparticles with catechol-grafted poly(ethylene glycol). J Mater Chem B 2022; 10:10042-10053. [PMID: 36156670 DOI: 10.1039/d2tb00779g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Ceria nanoparticles are remarkable antioxidants due to their large cerium(III) content and the possibility of recovering cerium(III) from cerium(IV) after reaction. Here we increase the cerium(III) content of colloidally stable nanoparticles (e.g., nanocrystals) using a reactive polymeric surface coating. Catechol-grafted poly(ethylene glycols) (PEG) polymers of varying lengths and architectures yield materials that are non-aggregating in a variety of aqueous media. Cerium(IV) on the ceria surface both binds and oxidizes the catechol functionality, generating a dark-red colour emblematic of surface-oxidized catechols with a concomitant increase in cerium(III) revealed by X-ray photoemission spectroscopy (XPS). The extent of ceria reduction depends sensitively on the architecture of the coating polymer; small and compact polymer chains pack with high density at the nanoparticle surface yielding the most cerium(III). Nanoparticles with increased surface reduction, quantified by the intensity of their optical absorption and thermogravimetric measures of polymer grafting densities, were more potent antioxidants as measured by a standard TEAC antioxidant assay. For the same core composition nanoparticle antioxidant capacities could be increased over an order of magnitude by tailoring the length and architecture of the reactive surface coatings.
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Affiliation(s)
- Yue Hu
- Department of Chemistry, Brown University, USA.
| | | | | | - Vivian Ling
- Department of Chemistry, Brown University, USA.
| | | | - Yidan Bi
- Department of Chemistry, Brown University, USA.
| | - Zhen Xiao
- Department of Chemistry, Brown University, USA.
| | | | | | - Joshua Dunn
- Department of Chemistry, Brown University, USA.
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21
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Calvo R, Thon A, Saad A, Salvador-Matar A, Manso-Silván M, Ahumada Ó, Pini V. Size characterization of plasmonic nanoparticles with dark-field single particle spectrophotometry. Sci Rep 2022; 12:17231. [PMID: 36280772 PMCID: PMC9592611 DOI: 10.1038/s41598-022-21649-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 09/29/2022] [Indexed: 01/06/2023] Open
Abstract
Plasmonic nanoparticles are widely used in multiple scientific and industrial applications. Although many synthesis methods have been reported in the literature throughout the last decade, controlling the size and shape of large populations still remains as a challenge. As size and shape variations have a strong impact in their plasmonic properties, the need to have metrological techniques to accurately characterize their morphological features is peremptory. We present a new optical method referred as Dark-Field Single Particle Spectrophotometry which is able to measure the individual sizes of thousands of particles with nanometric accuracy in just a couple of minutes. Our method also features an easy sample preparation, a straightforward experimental setup inspired on a customized optical microscope, and a measurement protocol simple enough to be carried out by untrained technicians. As a proof of concept, thousands of spherical nanoparticles of different sizes have been measured, and after a direct comparison with metrological gold standard electron microscopy, a discrepancy of 3% has been attested. Although its feasibility has been demonstrated on spherical nanoparticles, the true strengthness of the method is that it can be generalized also to nanoparticles with arbitrary shapes and geometries, thus representing an advantageous alternative to the gold-standard electron microscopy.
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Affiliation(s)
- Rodrigo Calvo
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain ,grid.5515.40000000119578126Departamento de Física Aplicada, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Andreas Thon
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain
| | - Asis Saad
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain
| | | | - Miguel Manso-Silván
- grid.5515.40000000119578126Departamento de Física Aplicada, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Óscar Ahumada
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain
| | - Valerio Pini
- Mecwins, Roda de Poniente 15, Tres Cantos, 28760 Madrid, Spain
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22
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Selection of cryoprotectants for freezing and freeze-drying of gold nanoparticles towards further uses in various applications. Colloids Surf B Biointerfaces 2022; 217:112702. [PMID: 35863234 DOI: 10.1016/j.colsurfb.2022.112702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 11/22/2022]
Abstract
Recently, cryopreservation of AuNPs without aggregation has been attempted to improve their long-term stability. This study investigated criteria to select cryoprotectants for AuNPs using a variety of materials, including sugar (sucrose), surfactant (Tween 20), polymers (polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP)), and biopolymer (pectin). For cryoprotective performance, UV-vis spectroscopy reveals the potential of all cryoprotectants for preventing citrate-capped AuNPs (cit-AuNPs) from irreversible aggregation under freezing. While sucrose, PVP, and pectin were more suitable than Tween 20 and PVA as cryoprotectants for lyophilization of AuNPs with the maintained redispersability. For storage and further use, Luria-Bertani agar plate, dynamic light scattering (DLS), and transmission electron microscopy (TEM) results indicate impacts of the cryoprotectant coexisted with AuNPs after resuspension and imply that washing of the restored AuNPs is encouraged. Otherwise, running the restored AuNPs through applications, such as functionalization, protein conjugation, and surface-enhanced Raman scattering (SERS), without washing the cryoprotectant could lead to inaccurate results. This study also serves as a guideline for a comprehensive practice flow of AuNP handling, encompassing the synthesis step, cryopreservation, and use after resuspension.
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23
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Hoff SE, Di Silvio D, Ziolo RF, Moya SE, Heinz H. Patterning of Self-Assembled Monolayers of Amphiphilic Multisegment Ligands on Nanoparticles and Design Parameters for Protein Interactions. ACS NANO 2022; 16:8766-8783. [PMID: 35603431 DOI: 10.1021/acsnano.1c08695] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Functionalization of nanoparticles with specific ligands is helpful to control specific diagnostic and therapeutic responses such as protein adsorption, cell targeting, and circulation. Precision delivery critically depends on a fundamental understanding of the interplay between surface chemistry, ligand dynamics, and interaction with the biochemical environment. Due to limited atomic-scale insights into the structure and dynamics of nanoparticle-bound ligands from experiments, relationships of grafting density and ligand chemistry to observable properties such as hydrophilicity and protein interactions remain largely unknown. In this work, we uncover how self-assembled monolayers (SAMs) composed of multisegment ligands such as thioalkyl-PEG-(N-alkyl)amides on gold nanoparticles can mimic mixed hydrophobic and hydrophilic ligand coatings, including control of patterns, hydrophilicity, and specific recognition properties. Our results are derived from molecular dynamics simulations with the INTERFACE-CHARMM36 force field at picometer resolution and comparisons to experiments. Small changes in ligand hydrophobicity, via adjusting the length of the N-terminal alkyl groups, tune water penetration by multiples and control superficial ordering of alkyl chains from 0 to 70% regularity. Further parameters include the grafting density of the ligands, curvature of the nanoparticle surfaces, type of solvent, and overall ligand length, which were examined in detail. We explain the thermodynamic origin of the formation of heterogeneous patterns of multisegment ligand SAMs and illustrate how different degrees of ligand order on the nanoparticle surface affect interactions with bovine serum albumin. The resulting design principles can be applied to a variety of ligand chemistries to customize the behavior of functionalized nanoparticles in biological media and enhance therapeutic efficiency.
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Affiliation(s)
- Samuel E Hoff
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303-0596, United States
| | - Desiré Di Silvio
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Paseo Miramon, 182, 20009 San Sebastian, Spain
| | - Ronald F Ziolo
- Centro de Investigación en Química Aplicada, Boulevard Enrique Reyna 140, 25294 Saltillo, Coahuila, México
| | - Sergio E Moya
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Paseo Miramon, 182, 20009 San Sebastian, Spain
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznan, Poland
| | - Hendrik Heinz
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303-0596, United States
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24
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Tang B, Liu BH, Liu ZY, Luo MY, Shi XH, Pang DW. Quantum Dots with a Compact Amphiphilic Zwitterionic Coating. ACS APPLIED MATERIALS & INTERFACES 2022; 14:28097-28104. [PMID: 35686447 DOI: 10.1021/acsami.2c04438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Generally speaking, it is difficult to keep nanomaterials encapsulated in amphiphilic polymers like octylamine-grafted poly(acrylic acid) (OPA) compact in coating-layer, with a small hydrodynamic size. Here, we prepared stable hydrophilic quantum dots (QDs) via encapsulation in ∼3 nm-long amphiphilic and zwitterionic (AZ) molecules. After encapsulation with AZ molecules, the coated QDs are only 2.1 nm thicker in coating, instead of 5.4 nm with OPA. Meanwhile, the hydrodynamic sizes of CdSe/CdS, ZnCdSeS, ZnCdSe/ZnS, and CdSe/ZnS QDs encapsulated in AZ molecules (AZ-QDs) are less than 15 nm, and 6-7 nm smaller than those of QDs in OPA (OPA-QDs). Notably, both extracellular and intracellular nonspecific binding of AZ-QDs is approximately 100-folds lower than that of OPA-QDs.
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Affiliation(s)
- Bo Tang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Bing-Hua Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Zhen-Ya Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Meng-Yao Luo
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Xue-Hui Shi
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, College of Chemistry, Frontiers Science Center for Cell Responses, Nankai University, Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300071, P. R. China
| | - Dai-Wen Pang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, College of Chemistry, Frontiers Science Center for Cell Responses, Nankai University, Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300071, P. R. China
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25
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Zhang L, Cao C, Kaushik N, Lai RY, Liao J, Wang G, Ariotti N, Jin D, Stenzel MH. Controlling the Biological Behaviors of Polymer-Coated Upconverting Nanoparticles by Adjusting the Linker Length of Estrone Ligands. Biomacromolecules 2022; 23:2572-2585. [PMID: 35584062 DOI: 10.1021/acs.biomac.2c00265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The estrone ligand is used for modifying nanoparticle surfaces to improve their targeting effect on cancer cell lines. However, to date, there is no common agreement on the ideal linker length to be used for the optimum targeting performance. In this study, we aimed to investigate the impact of poly(poly ethylene glycol methyl ether methacrylate) (PPEGMEMA) linker length on the cellular uptake behavior of polymer-coated upconverting nanoparticles (UCNPs). Different triblock terpolymers, poly(poly (ethylene glycol) methyl ether methacrylate)-block-polymethacrylic acid-block-polyethylene glycol methacrylate phosphate (PPEGMEMAx-b-PMAAy-b-PEGMP3: x = 7, 15, 33, and 80; y = 16, 20, 18, and 18), were synthesized with different polymer linker chain lengths between the surface and the targeting ligand by reversible addition-fragmentation chain transfer polymerization. The estrone ligand was attached to the polymer via specific terminal conjugation. The cellular association of polymer-coated UCNPs with linker chain lengths was evaluated in MCF-7 cells by flow cytometry. Our results showed that the bioactivity of ligand modification is dependent on the length of the polymer linker. The shortest polymer PPEGMEMA7-b-PMAA16-b-PEGMP3 with estrone at the end of the polymer chain was found to have the best cellular association behavior in the estrogen receptor (ER)α-positive expression cell line MCF-7. Additionally, the anticancer drug doxorubicin•HCl was encapsulated in the nanocarrier to evaluate the 2D and 3D cytotoxicity. The results showed that estrone modification could efficiently improve the cellular uptake in ERα-positive expression cell lines and in 3D spheroid models.
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Affiliation(s)
- Lin Zhang
- Cluster for Advanced Macromolecular Design, School of Chemistry, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Cheng Cao
- Cluster for Advanced Macromolecular Design, School of Chemistry, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Natasha Kaushik
- Electron Microscope Unit, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Rebecca Y Lai
- Cluster for Advanced Macromolecular Design, School of Chemistry, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Jiayan Liao
- Institute for Biomedical Materials and Devices, Faculty of Science, University of Technology Sydney, Sydney 2006 New South Wales, Australia
| | - Guannan Wang
- Cluster for Advanced Macromolecular Design, School of Chemistry, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Nicholas Ariotti
- Electron Microscope Unit, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Dayong Jin
- Institute for Biomedical Materials and Devices, Faculty of Science, University of Technology Sydney, Sydney 2006 New South Wales, Australia
| | - Martina H Stenzel
- Cluster for Advanced Macromolecular Design, School of Chemistry, University of New South Wales, Sydney 2052, New South Wales, Australia
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26
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Mitri N, Rahme K, Fracasso G, Ghanem E. Human blood biocompatibility and immunogenicity of scFvD2B PEGylated gold nanoparticles. NANOTECHNOLOGY 2022; 33:315101. [PMID: 35417900 DOI: 10.1088/1361-6528/ac66ef] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
Single chain variable D2B antibody fragments (scFvD2Bs) exhibit high affinity binding to prostate specific membrane antigens overexpressed in metastatic prostate cancer (PC). Conjugation of scFvD2B to gold nanoparticles (AuNPs) would enhance its stability and plasma half-life circulation to shuttle theranostic agents in PC. In this study, we synthesized PEGylated scFvD2B-AuNPs (AuNPs-scFvD2B-PEG) and tested their integrity, biocompatibility, and immunogenicity in freshly withdrawn human blood. Prior to blood incubation, Zeta potential measurements, UV-Vis spectroscopy, and dynamic light scattering (DLS) were used to assess the physicochemical properties of our nano-complexes in the presence or absence of PEGylation. A surface plasmon resonance band shift of 2 and 4 nm confirmed the successful coating for AuNPs-scFvD2B and AuNPs-scFvD2B-PEG, respectively. Likewise, DLS revealed a size increase of ∼3 nm for AuNPs-scFvD2B and ∼19 nm for AuNPs-scFvD2B-PEG. Zeta potential increased from -34 to -19 mV for AuNPs-scFvD2B and reached -3 mV upon PEGylation. Similar assessment measures were applied post-incubation in human blood with additional immunogenicity tests, such as hemolysis assay, neutrophil function test, and pyridine formazan extraction. Interestingly, grafting PEG chains on AuNPs-scFvD2B precluded the binding of blood plasma proteins and reduced neutrophil activation level compared with naked AuNPs-citrate counterparts. Most likely, a hydrated negative PEG cloud shielded the NPs rendering blood compatiblility with less than 10% hemolysis. In conclusion, the biocompatible AuNPs-scFvD2B-PEG presents promising characteristics for PC targeted therapy, with minimal protein adsorption affinity, low immunorecognition, and reduced hemolytic activity.
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Affiliation(s)
- Nadim Mitri
- Department of Sciences, Faculty of Natural and Applied Sciences, Notre Dame University-Louaize, Zouk Mosbeh, PO Box: 72, Lebanon
| | - Kamil Rahme
- Department of Sciences, Faculty of Natural and Applied Sciences, Notre Dame University-Louaize, Zouk Mosbeh, PO Box: 72, Lebanon
| | | | - Esther Ghanem
- Department of Sciences, Faculty of Natural and Applied Sciences, Notre Dame University-Louaize, Zouk Mosbeh, PO Box: 72, Lebanon
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27
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Ahmed B S, Baijal G, Somashekar R, Iyer S, Nayak V. Comparative study of one pot synthesis of PEGylated gold and silver nanoparticles for imaging and radiosensitization of oral cancers. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.109990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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28
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Chávez M, Sánchez-Obrero G, Madueño R, Sevilla JM, Blázquez M, Pineda T. Electrochemical evaluation of the grafting density of self-assembled monolayers of polyethylene glycol of different chain lengths formed by the grafting to approach under conditions close to the cloud point. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116294] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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29
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Pham-Nguyen OV, Shin J, Park Y, Jin S, Kim SR, Jung YM, Yoo HS. Fluorescence-Shadowing Nanoparticle Clusters for Real-Time Monitoring of Tumor Progression. Biomacromolecules 2022; 23:3130-3141. [PMID: 35451812 PMCID: PMC9364936 DOI: 10.1021/acs.biomac.2c00169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Monitoring tumor progression is important for elucidating appropriate therapeutic strategies in response to anticancer therapeutics. To fluorescently monitor the in vivo levels of tumor-specific enzymes, we prepared matrix metalloprotease (MMP)-responsive gold nanoparticle (AuNP) clusters to sense tumor microenvironments. Specifically, AuNPs and quantum dots (QDs) were surface-engineered with two poly(ethylene glycol) [PEG] shells and cyclooctyne moieties, respectively, for the copper-free click reaction. Upon "peeling off" of the secondary shell from the double-PEGylated AuNPs under MMP-rich conditions, shielded azide moieties of the AuNPs were displayed toward the QD, and those two particles were clicked into nanoparticle clusters. This consequently resulted in a dramatic size increase and fluorescence quenching of QDs via fluorescence energy transfer (FRET) due to the molecular proximity of the particles. We observed that FRET efficiency was modulated via changes in MMP levels and exposure time. Cancer cell numbers exhibited a strong correlation with FRET efficiency, and in vivo studies that employed solid tumor models accordingly showed that FRET efficiency was dependent on the tumor size. Thus, we envision that this platform can be tailored and optimized for tumor monitoring based on MMP levels in solid tumors.
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Affiliation(s)
- Oanh-Vu Pham-Nguyen
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - JiUn Shin
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Yeonju Park
- Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Sila Jin
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Song Rae Kim
- Korea Basic Science Institute, Chuncheon Center, Chuncheon 24341, Republic of Korea
| | - Young Mee Jung
- Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, Republic of Korea.,Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea.,Kangwon Institute of Inclusive Technology (KIIT), Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Hyuk Sang Yoo
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea.,Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, Republic of Korea.,Kangwon Institute of Inclusive Technology (KIIT), Kangwon National University, Chuncheon 24341, Republic of Korea
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30
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Plasmonic Azobenzene Chemoreporter for Surface-Enhanced Raman Scattering Detection of Biothiols. BIOSENSORS 2022; 12:bios12050267. [PMID: 35624568 PMCID: PMC9138965 DOI: 10.3390/bios12050267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 11/17/2022]
Abstract
Low molecular weight thiols (biothiols) are highly active compounds extensively involved in human physiology. Their abnormal levels have been associated with multiple diseases. In recent years, major efforts have been devoted to developing new nanosensing methods for the low cost and fast quantification of this class of analytes in minimally pre-treated samples. Herein, we present a novel strategy for engineering a highly efficient surface-enhanced Raman scattering (SERS) spectroscopy platform for the dynamic sensing of biothiols. Colloidally stable silver nanoparticles clusters equipped with a specifically designed azobenzene derivative (AzoProbe) were generated as highly SERS active substrates. In the presence of small biothiols (e.g., glutathione, GSH), breakage of the AzoProbe diazo bond causes drastic spectral changes that can be quantitatively correlated with the biothiol content with a limit of detection of ca. 5 nM for GSH. An identical response was observed for other low molecular weight thiols, while larger macromolecules with free thiol groups (e.g., bovine serum albumin) do not produce distinguishable spectral alterations. This indicates the suitability of the SERS sensing platform for the selective quantification of small biothiols.
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32
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Targeted Delivery of Cisplatin by Gold Nanoparticles: The Influence of Nanocarrier Surface Modification Type on the Efficiency of Drug Binding Examined by CE-ICP-MS/MS. Int J Mol Sci 2022; 23:ijms23042324. [PMID: 35216438 PMCID: PMC8874575 DOI: 10.3390/ijms23042324] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 01/27/2023] Open
Abstract
Spherical gold nanoparticles (GNPs), whose unique properties regarding biomedical applications were broadly investigated, are an object of interest as nanocarriers in drug targeted delivery systems (DTDSs). The possibility of surface functionalization, especially in enabling longer half-life in the bloodstream and enhancing cellular uptake, provides an opportunity to overcome the limitations of popular anticancer drugs (such as cisplatin) that cause severe side effects due to their nonselective transportation. Herein, we present investigations of gold nanoparticle–cisplatin systems formation (regarding reaction kinetics and equilibrium) in which it was proved that the formation efficiency and stability strongly depend on the nanoparticle surface functionalization. In this study, the capillary electrophoresis hyphenated with inductively coupled plasma tandem mass spectrometry (CE-ICP-MS/MS) was used for the first time to monitor gold–drug nanoconjugates formation. The research included optimizing CE separation conditions and determining reaction kinetics using the CE-ICP-MS/MS developed method. To characterize nanocarriers and portray changes in their physicochemical properties induced by the surface’s processes, additional hydrodynamic size and ζ-potential by dynamic light scattering (DLS) measurements were carried out. The examinations of three types of functionalized GNPs (GNP-PEG-COOH, GNP-PEG-OCH3, and GNP-PEG-biotin) distinguished the essential differences in drug binding efficiency and nanoconjugate stability.
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33
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Juji S, Oishi M. Long-term Cryopreservation of Ready-to-Use DNA-Modified Gold Nanoparticle Derivatives: Effect of Preservation Temperature on Their DNA Dissociation and Functional Stability. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20210437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shotaro Juji
- Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8573
| | - Motoi Oishi
- Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8573
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Anwar N, Khan A, Shah M, Walsh JJ, Saleem S, Anwar Z, Aslam S, Irshad M. Hybridization of green synthesized silver nanoparticles with poly(ethylene glycol) methacrylate and their biomedical applications. PeerJ 2022; 10:e12540. [PMID: 35111388 PMCID: PMC8772450 DOI: 10.7717/peerj.12540] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 11/04/2021] [Indexed: 01/06/2023] Open
Abstract
In the present research, a rapid, simple and efficient green method is used for the incorporation of silver nanoparticles (AgNPs) into poly(ethylene glycol) methacrylate (PEGMA) to create biocatalysts with excellent properties for pharmaceutical purpose. In the first phase, Caralluma tuberculata capped AgNPs (Ca-AgNPs) were prepared using green synthetic approach and in the second phase Caralluma tuberculata capped AgNPs were hybridized with poly(ethylene glycol) methacrylate to form PEGMA-AgNPs. Both the virgin (naked or uncapped) and polymer-capped materials were characterized spectroscopically and their results were compared. Fourier transform infrared spectroscopy showed no new peak after the capping procedure, showing that only physical interactions takes place during capping. After PEGMA capping, the spectra of the AgNPs red shifted (from 450 nm to 520 nm) and the overall particle size of AgNPs increased. Catalytic activity of the nanoparticles and hybrid system were tested by choosing the catalytic reduction of 4-nitrophenol (4-NP) as a model reaction. Both synthesized NPs and polymer capped NPs exhibits catalytic activity for the reduction of 4-NP to 4-aminophenol. The polymer hybrid exhibits remarkable antiproliferative, antioxidant, cytotoxic, antidiabetic and antileishmanial activities.
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Affiliation(s)
- Natasha Anwar
- Chemistry Department, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Abbas Khan
- Chemistry Department, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Mohib Shah
- Botany Department, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - John J. Walsh
- School of Pharmacy and Pharmaceutical Sciences, University of Dublin, Trinity College, Dublin, Ireland
| | - Samreen Saleem
- Faculty of Allied Health Sciences & Technology, Women University Swabi, Swabi, Pakistan
| | - Zeeshan Anwar
- Pharmacy Department, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Sobia Aslam
- Chemistry Department, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Muhammad Irshad
- Botany Department, Abdul Wali Khan University Mardan, Mardan, Pakistan
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Akinyelu J, Oladimeji O, Daniels A, Singh M. Folate-targeted doxorubicin delivery to breast and cervical cancer cells using a chitosan-gold nano-delivery system. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Traynor DJ, Ureña-Horno E, Hobson JJ, Croft EJ, Edwards SE, Rannard SP, Giardiello M. Aqueous (co)polymer stabilisers for size-controlled 2–5 nm gold nanoparticle synthesis with tuneable catalytic activity. NEW J CHEM 2022. [DOI: 10.1039/d2nj03257k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tuneable (co)polymer composition and architecture influences both AuNP size during synthesis and catalytic activity for the reduction of 4-Nitrophenol.
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Affiliation(s)
- Daniel J. Traynor
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
| | - Elena Ureña-Horno
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
| | - James J. Hobson
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
- Centre of Excellence for Long-acting Therapeutics, University of Liverpool, West Derby Street, Liverpool L7 8TX, UK
| | - Elliot J. Croft
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
| | - Stephanie E. Edwards
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
| | - Steve P. Rannard
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
- Centre of Excellence for Long-acting Therapeutics, University of Liverpool, West Derby Street, Liverpool L7 8TX, UK
| | - Marco Giardiello
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
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Ferreres G, Pérez-Rafael S, Torrent-Burgués J, Tzanov T. Hyaluronic Acid Derivative Molecular Weight-Dependent Synthesis and Antimicrobial Effect of Hybrid Silver Nanoparticles. Int J Mol Sci 2021; 22:ijms222413428. [PMID: 34948227 PMCID: PMC8707691 DOI: 10.3390/ijms222413428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 11/16/2022] Open
Abstract
Silver nanoparticles (Ag NPs) appeared as promising antimicrobial candidates to face the development of antibiotic resistance. Although reported as toxic towards mammalian cells, their combination with biomolecules have shown reduced toxicity, while maintaining the antimicrobial function. Herein, hyaluronic acid (HA) with low (40 kDa), medium (200 and 600 kDa) and high (2 MDa) molecular weight (Mw) was modified with adipic acid dihydrazide (ADH) and used as reducing and capping agents to synthesise antimicrobial hybrid Ag NPs. The Mw of the polymer played a crucial role in the morphology, size and antibacterial activity of the Ag NPs. The 600 and 200 kDa HA-ADH-Ag NPs were able to reduce the Escherichia coli and Staphylococcus aureus concentration by more than 3 logs, while the 40 kDa NPs reached ~2 logs reduction. The 2 MDa HA-ADH failed to form homogenous NPs with strong bactericidal activity. A mechanistic study of the interaction with a model bacterial membrane using Langmuir isotherms confirmed the greater interaction between bacteria and higher Mw polymers and the effect of the NP’s morphology. The nanocomposites low toxicity to human skin cells was demonstrated in vitro, showing more than 90% cell viability after incubation with the NPs.
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Pham-Nguyen OV, Lee JW, Park Y, Jin S, Kim SR, Jung YM, Yoo HS. Atom transfer radical-polymerized cationic shells on gold nanoparticles for near infrared-triggered photodynamic therapy of tumor-bearing animals. J Mater Chem B 2021; 9:9700-9710. [PMID: 34779468 DOI: 10.1039/d1tb02004h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Gold nanoparticles (AuNPs) were surface-engineered with a cationic corona to enhance the incorporation of photosensitizers for photodynamic therapy (PDT). The cationic corona composed of poly(2-(dimethylamino)ethyl methacrylate) was atom transfer radical-polymerized on the surface of the AuNPs. The cationic corona of the engineered surface was characterized by dynamic light scattering, electron microscopy, Raman spectroscopy, and mass spectroscopy. Chlorin-e6 (Ce6) incorporated onto the surface-engineered AuNPs exhibited higher cell incorporation efficiency than bare AuNPs. Ce6-incorporated AuNPs were confirmed to release singlet oxygen upon NIR irradiation. Compared to Ce6, Ce6-incorporated AuNPs exhibited higher cellular uptake and cytotoxicity against cancer cells in an irradiation time-dependent manner. Near-infrared-irradiated animals administered Ce6-incorporated AuNPs exhibited higher levels of tumor suppression without noticeable body weight loss. This result was attributed to the higher localization of Ce6 at the tumor sites to induce cancer cell apoptosis. Thus, we envision that engineered AuNPs with cationic corona can be tailored to effectively deliver photosensitizers to tumor sites for photodynamic therapy.
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Affiliation(s)
- Oanh-Vu Pham-Nguyen
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - Ju Won Lee
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - Yeonju Park
- Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Sila Jin
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Song Rae Kim
- Korea Basic Science Institute, Chuncheon Center, Chuncheon, 24341, Republic of Korea
| | - Young Mee Jung
- Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Hyuk Sang Yoo
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea.
- Institute of Bioscience and Biotechnology, Kangwon National University, Republic of Korea
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On the Synergism of Biogenic Gold Nanoparticles and Hydroxyaluminum Phthalocyanines in the Photoeradication of Staphylococcus aureus. Molecules 2021; 26:molecules26237378. [PMID: 34885959 PMCID: PMC8658972 DOI: 10.3390/molecules26237378] [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: 11/13/2021] [Revised: 11/29/2021] [Accepted: 12/02/2021] [Indexed: 11/17/2022] Open
Abstract
Due to the unusual properties of gold nanoparticles, these structures are widely used in medicine and biology. This paper describes for the first time the synthesis of colloidal gold nanoparticles by the cell-free filtrate obtained from the Coriolus versicolor biomass and the use of these biogenic nanostructures to increase the photosensitizing efficiency of di- (AlPcS2) and tetrasulfonated (AlPcS4) hydroxyaluminum phthalocyanines in antibacterial photodynamic therapy. The obtained monodisperse particles were extremely stable, and this remarkable stability was due to the presence of phosphoprotein as a capping agent. The studied gold nanoparticles had a spherical shape, were uniformly distributed, and were characterized by a single plasmon band at wavelength of 514-517 nm. Almost 60% of the gold particles were found to be in the range of 13 to 15 nm. In accordance with the regulations of the American Microbiological Society, indicating that any antimicrobial technique must kill at least 3 log CFU (99.9%) to be accepted as "antimicrobial", this mortality of Staphylococcus aureus was shown to be achieved in the presence of AlPcS4 + AuNPs mixture and 4.8 J cm-2 light dose compared to AlPcS4 alone, which required a light dose of 24 J cm-2. The best effect of increasing the effectiveness of combating this pathogen was observed in the case of AlPcS2 + AuNPs as a photosensitizing mixture. The light dose of 24 J cm-2 caused a lethal effect of the studied coccus in the planktonic culture.
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Ovejero JG, Garcia MA, Herrasti P. Self-Assembly of Au-Fe 3O 4 Hybrid Nanoparticles Using a Sol-Gel Pechini Method. Molecules 2021; 26:molecules26226943. [PMID: 34834032 PMCID: PMC8624103 DOI: 10.3390/molecules26226943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 11/29/2022] Open
Abstract
The Pechini method has been used as a synthetic route for obtaining self-assembling magnetic and plasmonic nanoparticles in hybrid silica nanostructures. This manuscript evaluates the influence of shaking conditions, reaction time, and pH on the size and morphology of the nanostructures produced. The characterization of the nanomaterials was carried out by transmission electron microscopy (TEM) to evaluate the coating and size of the nanomaterials, Fourier-transform infrared spectroscopy (FT-IR) transmission spectra to evaluate the presence of the different coatings, and thermogravimetric analysis (TGA) curves to determine the amount of coating. The results obtained show that the best conditions to obtain core–satellite nanostructures with homogeneous silica shells and controlled sizes (<200 nm) include the use of slightly alkaline media, the ultrasound activation of silica condensation, and reaction times of around 2 h. These findings represent an important framework to establish a new general approach for the click chemistry assembling of inorganic nanostructures.
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Affiliation(s)
- Jesus G. Ovejero
- Instituto de Magnetismo Aplicado, ‘Salvador Velayos’, UCM-CSIC-ADIF, Las Rozas, P.O. Box 155, 28230 Madrid, Spain;
- Servicio de Dosimetría y Radioprotección, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
- Correspondence: (J.G.O.); (P.H.)
| | - Miguel A. Garcia
- Instituto de Magnetismo Aplicado, ‘Salvador Velayos’, UCM-CSIC-ADIF, Las Rozas, P.O. Box 155, 28230 Madrid, Spain;
- Instituto de Cerámica y Vidrio, ICV-CSIC, C/Kelsen 5, Cantoblanco, 28049 Madrid, Spain
| | - Pilar Herrasti
- Departamento de Química Física Aplicada, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco s/n, 28049 Madrid, Spain
- Correspondence: (J.G.O.); (P.H.)
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Belleti E, Bevilaqua VR, Brito AMM, Modesto DA, Lanfredi AJC, Viviani VR, Nantes-Cardoso IL. Synthesis of bioluminescent gold nanoparticle-luciferase hybrid systems for technological applications. Photochem Photobiol Sci 2021; 20:1439-1453. [PMID: 34613602 PMCID: PMC8493054 DOI: 10.1007/s43630-021-00111-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 09/27/2021] [Indexed: 11/01/2022]
Abstract
Bioluminescent gold nanoparticles (AuNPs) were synthesized in situ using dithiol-terminated polyethylene glycol (PEG(SH)2) as reducer and stabilizing agents. Hybrid Au/F3O4 nanoparticles were also produced in a variation of synthesis, and both types of nanostructures had the polymer capping replaced by L-cysteine (Cys). The four types of nanoparticles, PEG(SH)2AuNPs, PEG(SH)2Au/F3O4NPs, CysAuNPs, and CysAu/F3O4NPs were associated with purified recombinant Pyrearinus termitilluminans green emitting click beetle luciferase (PyLuc) and Phrixotrix hirtus (RELuc) red-emitting railroad worm luciferase. Enzyme association with PEG(SH)2 was also investigated as a control. Luciferases were chosen because they catalyze bioluminescent reactions used in a wide range of bioanalytical applications, including ATP assays, gene reporting, high-throughput screening, bioluminescence imaging, biosensors and other bioluminescence-based assays. The immobilization of PyLuc and RELuc promoted partial suppression of the enzyme luminescence activity in a functionalization-dependent way. Association of PyLuc and RELuc with AuNPs increased the enzyme operational stability in relation to the free enzyme, as evidenced by the luminescence intensity from 0 to 7 h after substrate addition. The stability of the immobilized enzymes was also functionalization-dependent and the association with CysAuNPs was the condition that combined more sustained luminescent activity with a low degree of luminescence quenching. The higher enzymatic stability and sustained luminescence of luciferases associated with nanoparticles may improve the applicability of bioluminescence for bioimaging and biosensing purposes.
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Affiliation(s)
- Elisângela Belleti
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
| | - Vanessa R Bevilaqua
- Graduate School of Evolutive Genetics and Molecular Biology (UFSCar), São Carlos, SP, Brazil
| | - Adrianne M M Brito
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
| | - Diego A Modesto
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
| | - Alexandre J C Lanfredi
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
| | - Vadim R Viviani
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
- Graduate School of Biotechnology and Environmental Monitoring (UFSCar), Sorocaba, SP, Brazil
| | - Iseli L Nantes-Cardoso
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil.
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42
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Buchheit R, Kuttich B, González-García L, Kraus T. Hybrid Dielectric Films of Inkjet-Printable Core-Shell Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2103087. [PMID: 34425032 DOI: 10.1002/adma.202103087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 07/05/2021] [Indexed: 05/27/2023]
Abstract
A new type of hybrid core-shell nanoparticle dielectric that is suitable for inkjet printing is introduced. Gold cores (dcore ≈ 4.5 nm diameter) are covalently grafted with thiol-terminated polystyrene (Mn = 11000 Da and Mn = 5000 Da) and used as inks to spin-coat and inkjet-print dielectric films. The dielectric layers have metal volume fractions of 5 to 21 vol% with either random or face-centered-cubic structures depending on the polymer length and grafting density. Films with 21 vol% metal have dielectric constants of 50@1 Hz. Structural and electrical characterization using transmission electron microscopy, small-angle X-ray scattering, and impedance spectroscopy indicates that classical random capacitor-resistor network models partially describe this hybrid material but fail at high metal fractions, where the covalently attached shell prevents percolation and ensures high dielectric constants without the risk of dielectric breakdown. A comparison of disordered to ordered films indicates that the network structure affects dielectric properties less than the metal content. The applicability of the new dielectric material is demonstrated by formulating inkjet inks and printing devices. An inkjet-printed capacitor with an area of 0.79 mm2 and a 17 nm thick dielectric had a capacitance of 2.2 ± 0.1 n F @ 1 k H z .
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Affiliation(s)
- Roman Buchheit
- INM - Leibniz Institute for New Materials, Campus D2 2, Saarbrücken, 66123, Germany
| | - Björn Kuttich
- INM - Leibniz Institute for New Materials, Campus D2 2, Saarbrücken, 66123, Germany
| | - Lola González-García
- INM - Leibniz Institute for New Materials, Campus D2 2, Saarbrücken, 66123, Germany
| | - Tobias Kraus
- INM - Leibniz Institute for New Materials, Campus D2 2, Saarbrücken, 66123, Germany
- Colloid and Interface Chemistry, Saarland University, Campus D2 2, Saarbrücken, 66123, Germany
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Understanding the Adsorption of Peptides and Proteins onto PEGylated Gold Nanoparticles. Molecules 2021; 26:molecules26195788. [PMID: 34641335 PMCID: PMC8510204 DOI: 10.3390/molecules26195788] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/18/2021] [Accepted: 09/20/2021] [Indexed: 11/25/2022] Open
Abstract
Polyethylene glycol (PEG) surface conjugations are widely employed to render passivating properties to nanoparticles in biological applications. The benefits of surface passivation by PEG are reduced protein adsorption, diminished non-specific interactions, and improvement in pharmacokinetics. However, the limitations of PEG passivation remain an active area of research, and recent examples from the literature demonstrate how PEG passivation can fail. Here, we study the adsorption amount of biomolecules to PEGylated gold nanoparticles (AuNPs), focusing on how different protein properties influence binding. The AuNPs are PEGylated with three different sizes of conjugated PEG chains, and we examine interactions with proteins of different sizes, charges, and surface cysteine content. The experiments are carried out in vitro at physiologically relevant timescales to obtain the adsorption amounts and rates of each biomolecule on AuNP-PEGs of varying compositions. Our findings are relevant in understanding how protein size and the surface cysteine content affect binding, and our work reveals that cysteine residues can dramatically increase adsorption rates on PEGylated AuNPs. Moreover, shorter chain PEG molecules passivate the AuNP surface more effectively against all protein types.
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Sindram J, Karg M. Polymer ligand binding to surface-immobilized gold nanoparticles: a fluorescence-based study on the adsorption kinetics. SOFT MATTER 2021; 17:7487-7497. [PMID: 34323887 DOI: 10.1039/d1sm00892g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We report on a simple, fluorescence-based method for the investigation of the binding kinetics of polystyrene ligands, dispersed in an organic solvent, to substrate supported gold nanoparticles. For this purpose, we develop a protocol for the immobilization of gold nanoparticles on glass substrates, that yields sub-monolayers of randomly distributed particles with excellent homogeneity and reproducibility. Using fluorescently labeled polystyrene, we monitor the ligand concentration in bulk dispersion in real time and follow the binding to the particle-decorated substrates. The influence of the ligand molecular weight on the binding kinetics is investigated. We correlate the reaction rates with the diffusion coefficients of the different ligands and are able to describe the molecular weight dependency with a simple kinetic model. Both the diffusion and the activation step appear to contribute to the effective reaction rates.
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Affiliation(s)
- Julian Sindram
- Institut für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany.
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Chávez M, Fernández-Merino Á, Sánchez-Obrero G, Madueño R, Sevilla JM, Blázquez M, Pineda T. Distinct thermoresponsive behaviour of oligo- and poly-ethylene glycol protected gold nanoparticles in concentrated salt solutions. NANOSCALE ADVANCES 2021; 3:4767-4779. [PMID: 36134318 PMCID: PMC9417796 DOI: 10.1039/d1na00392e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/02/2021] [Indexed: 05/09/2023]
Abstract
In this work, the methoxy terminated oligo- and polyethylene glycol of different chain lengths (EGn, n = 7, 18, 45 and 136) is grafted on AuNP surfaces under conditions where they attain maximum grafting densities. These EGn-AuNPs gain stability relative to the pristine c-AuNPs in aqueous solutions and in a wide temperature interval and they form stable suspensions in solutions of high NaCl concentrations. To show the thermoresponsive properties of these EGn-AuNPs, temperature titration experiments are carried out in the presence of increasing amounts of salts. The concentrations of NaCl are chosen by checking the stability of EGn-AuNPs at room temperature and choosing the highest concentrations that allow them to form stable suspensions. The analysis of the temperature titration experiments monitored by UV-visible spectroscopy and dynamic light scattering allows us to establish the existence of transitions from individual to assembled nanoparticles, the reversibility of the temperature transitions and hysteretic behaviour in these systems. While EG7-AuNPs only show reversible temperature transitions in the presence of 5 mM NaCl, EG18-AuNPs do up to 1 M NaCl, becoming only partially reversible in 2 M NaCl. The titrations of EG45-AuNPs in 3 and 5 M NaCl show irreversible temperature transitions. Finally, EG136-AuNPs present a complex and interesting behaviour with two temperature transitions, the first one showing hysteresis and the second being reversible.
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Affiliation(s)
- Miriam Chávez
- Department of Physical Chemistry and Applied Thermodynamics, Institute of Fine Chemistry and Nanochemistry, University of Cordoba, Campus Rabanales Ed. Marie Curie 2a Planta E-14014 Córdoba Spain
| | - Ángela Fernández-Merino
- Department of Physical Chemistry and Applied Thermodynamics, Institute of Fine Chemistry and Nanochemistry, University of Cordoba, Campus Rabanales Ed. Marie Curie 2a Planta E-14014 Córdoba Spain
| | - Guadalupe Sánchez-Obrero
- Department of Physical Chemistry and Applied Thermodynamics, Institute of Fine Chemistry and Nanochemistry, University of Cordoba, Campus Rabanales Ed. Marie Curie 2a Planta E-14014 Córdoba Spain
| | - Rafael Madueño
- Department of Physical Chemistry and Applied Thermodynamics, Institute of Fine Chemistry and Nanochemistry, University of Cordoba, Campus Rabanales Ed. Marie Curie 2a Planta E-14014 Córdoba Spain
| | - José Manuel Sevilla
- Department of Physical Chemistry and Applied Thermodynamics, Institute of Fine Chemistry and Nanochemistry, University of Cordoba, Campus Rabanales Ed. Marie Curie 2a Planta E-14014 Córdoba Spain
| | - Manuel Blázquez
- Department of Physical Chemistry and Applied Thermodynamics, Institute of Fine Chemistry and Nanochemistry, University of Cordoba, Campus Rabanales Ed. Marie Curie 2a Planta E-14014 Córdoba Spain
| | - Teresa Pineda
- Department of Physical Chemistry and Applied Thermodynamics, Institute of Fine Chemistry and Nanochemistry, University of Cordoba, Campus Rabanales Ed. Marie Curie 2a Planta E-14014 Córdoba Spain
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Verdin A, Malherbe C, Eppe G. Spatially resolved determination of the abundance of the HER2 marker in microscopic breast tumors using targeted SERS imaging. Mikrochim Acta 2021; 188:288. [PMID: 34350526 DOI: 10.1007/s00604-021-04943-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/10/2021] [Indexed: 10/20/2022]
Abstract
Highly selective nanoprobes have been developed based on SERS-active Au@Ag nanoparticles protected by a PEG coating and functionalized with monoclonal antibodies against human epidermal growth factor receptor 2 (HER2). The PEG coating allows to drastically reduce unspecific interactions during incubation on tissues, while the monoclonal antibodies allow a highly specific targeting of HER2. Using the designed SERS nanoprobes combined with a spectral imaging and data weighting approach, we demonstrate the proportionality between the SERS signal and the amount of HER2 antigen on the cell membranes as measured by digital image analysis of IHC staining in microscopic breast tumors (linear fit R2 = 0.87). We also show that the level of expression of HER2 measured by SERS is significantly different between several microscopic tumor parts of the same tissue slide. Therefore, SERS is proving to be a suitable technique for the localized quantitative measurement of specific markers in breast cancerous tissues. Owing to its high multiplexing capabilities, SERS could be a future tool of choice for characterizing the molecular heterogeneity of tumors at the microscopic scale.
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Affiliation(s)
- Alexandre Verdin
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, 4000, Liège, Belgium
| | - Cedric Malherbe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, 4000, Liège, Belgium
| | - Gauthier Eppe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, 4000, Liège, Belgium.
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Morphologically Diverse Micro- and Macrostructures Created via Solvent Evaporation-Induced Assembly of Fluorescent Spherical Particles in the Presence of Polyethylene Glycol Derivatives. Molecules 2021; 26:molecules26144294. [PMID: 34299568 PMCID: PMC8304015 DOI: 10.3390/molecules26144294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/09/2021] [Accepted: 07/13/2021] [Indexed: 11/28/2022] Open
Abstract
The creation of fluorescent micro- and macrostructures with the desired morphologies and sizes is of considerable importance due to their intrinsic functions and performance. However, it is still challenging to modulate the morphology of fluorescent organic materials and to obtain insight into the factors governing the morphological evolution. We present a facile bottom-up approach to constructing diverse micro- and macrostructures by connecting fluorescent spherical particles (SPs), which are generated via the spherical assembly of photoisomerizable azobenzene-based propeller-shaped chromophores, only with the help of commercially available polyethylene glycol (PEG) derivatives. Without any extra additives, solvent evaporation created a slow morphological evolution of the SPs from short linear chains (with a length of a few micrometers) to larger, interconnected networks and sheet structures (ranging from tens to >100 µm) at the air–liquid interface. Their morphologies and sizes were significantly dependent on the fraction and length of the PEG. Our experimental results suggest that noncovalent interactions (such as hydrophobic forces and hydrogen bonding) between the amphiphilic PEG chains and the relatively hydrophobic SPs were weak in aqueous solutions, but play a crucial role in creating the morphologically diverse micro- and macrostructures. Moreover, short-term irradiation with visible light caused fast morphological crumpling and fluorescence switching of the obtained structures.
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Sindram J, Krüsmann M, Otten M, Pauly T, Nagel-Steger L, Karg M. Versatile Route toward Hydrophobically Polymer-Grafted Gold Nanoparticles from Aqueous Dispersions. J Phys Chem B 2021; 125:8225-8237. [PMID: 34260239 DOI: 10.1021/acs.jpcb.1c03772] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stabilization of gold nanoparticles in organic solvents is a key challenge in making them available for a wider range of material applications. Polymers are often used as stabilizing ligands because they also allow for the introduction of new properties and functionalities. Many of the established synthesis protocols for gold nanoparticles are water-based. However, the insolubility of many synthetic polymers in water renders the direct functionalization of aqueous particle dispersions with these ligands difficult. Here, we report on an approach for the functionalization of gold nanoparticles, which were prepared by aqueous synthesis, with hydrophobic polymer ligands and their characterization in nonpolar, organic dispersions. Our method employs an auxiliary ligand to first transfer gold nanoparticles from an aqueous to an organic medium. In the organic phase, the auxiliary ligand is then displaced by thiolated polystyrene ligands to form a dense polymer brush on the particle surface. We characterize the structure of the ligand shell using electron microscopy, scattering techniques, and ultracentrifugation and analyze the influence of the molecular weight of the polystyrene ligands on the structure of the polymer brush. We further investigate the colloidal stability of polystyrene-functionalized gold nanoparticles in various organic solvents. Finally, we extend the use of our protocol from small, spherical gold nanoparticles to larger gold nanorods and nanocubes.
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Affiliation(s)
- Julian Sindram
- Institut für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Marcel Krüsmann
- Institut für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Marius Otten
- Institut für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Thomas Pauly
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany.,IBI-7, Structural Biochemistry, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Strasse, 52425 Jülich, Germany
| | - Luitgard Nagel-Steger
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany.,IBI-7, Structural Biochemistry, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Strasse, 52425 Jülich, Germany
| | - Matthias Karg
- Institut für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
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Stanicki D, Larbanoix L, Boutry S, Vangijzegem T, Ternad I, Garifo S, Muller RN, Laurent S. Impact of the chain length on the biodistribution profiles of PEGylated iron oxide nanoparticles: a multimodal imaging study. J Mater Chem B 2021; 9:5055-5068. [PMID: 34132320 DOI: 10.1039/d1tb00573a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Bimodal sub-5 nm superparamagnetic iron oxide nanoparticles (SPIO-5) coated with polyethylene glycol of different chain lengths (i.e. PEG-800, -2000 and -5000) have been prepared and characterized. Fluorescence properties have been obtained by mean of the grafting of a near-infrared-emitting dye (NIR-dye) onto the surface of the oxide, thanks to the carboxylic acid functions introduced towards an organosilane coating. Such modification allowed us to follow in vivo their biodistribution and elimination pathways by T1-w and T2-w high-field magnetic resonance imaging (MRI), as well as by optical and optoacoustic imaging. Interestingly, it has been highlighted that for a given composition, the thickness of the coating strongly influences the pharmacokinetic properties of the administrated SPIO-5.
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Affiliation(s)
- Dimitri Stanicki
- General, Organic and Biomedical Chemistry Units, NMR and Molecular Imaging Laboratory, University of Mons, B-7000 Mons, Belgium.
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Azadi A, Golchini A, Delazar S, Abarghooi Kahaki F, Dehnavi SM, Payandeh Z, Eyvazi S. Recent Advances on Immune Targeted Therapy of Colorectal Cancer Using bi-Specific Antibodies and Therapeutic Vaccines. Biol Proced Online 2021; 23:13. [PMID: 34193050 PMCID: PMC8245152 DOI: 10.1186/s12575-021-00147-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/12/2021] [Indexed: 12/22/2022] Open
Abstract
Colorectal cancer (CRC) is a universal heterogeneous disease that is characterized by genetic and epigenetic alterations. Immunotherapy using monoclonal antibodies (mAb) and cancer vaccines are substitute strategies for CRC treatment. When cancer immunotherapy is combined with chemotherapy, surgery, and radiotherapy, the CRC treatment would become excessively efficient. One of the compelling immunotherapy approaches to increase the efficiency of CRC therapy is the deployment of therapeutic mAbs, nanobodies, bi-specific antibodies and cancer vaccines, which improve clinical outcomes in patients. Also, among the possible therapeutic approaches for CRC patients, gene vaccines in combination with antibodies are recently introduced as a new perspective. Here, we aimed to present the current progress in CRC immunotherapy, especially using Bi-specific antibodies and dendritic cells mRNA vaccines. For this aim, all data were extracted from Google Scholar, PubMed, Scopus, and Elsevier, using keywords cancer vaccines; CRC immunotherapy and CRC mRNA vaccines. About 97 articles were selected and investigated completely based on the latest developments and novelties on bi-specific antibodies, mRNA vaccines, nanobodies, and MGD007.
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Affiliation(s)
- Ali Azadi
- Department of Medicine, De La Salle Health Sciences Institute, Dasmariñas, Philippines
| | - Alireza Golchini
- Cancer surgery Department; Shiraz Medical School, Shiraz University of medical Sciences, Shiraz, Iran
| | - Sina Delazar
- Department of Radiology, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Abarghooi Kahaki
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Mohsen Dehnavi
- Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Zahra Payandeh
- Immunology Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Shirin Eyvazi
- Department of Biology, Tabriz Branch, Islamic Azad University, Tabriz, Iran. .,Biotechnology Research Center, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
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