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Caldwell J, Rodriguez-Lorenzo L, Espiña B, Beck A, Stock F, Voges K, Pabortsava K, Feltham C, Horton A, Lampitt R, Rothen-Rutishauser B, Taladriz-Blanco P, Petri-Fink A. Detection of submicron- and nanoplastics spiked in environmental fresh- and saltwater with Raman spectroscopy. Mar Pollut Bull 2024; 203:116468. [PMID: 38744048 DOI: 10.1016/j.marpolbul.2024.116468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/29/2024] [Accepted: 05/03/2024] [Indexed: 05/16/2024]
Abstract
Detection of small plastic particles in environmental water samples has been a topic of increasing interest in recent years. A multitude of techniques, such as variants of Raman spectroscopy, have been employed to facilitate their analysis in such complex sample matrices. However, these studies are often conducted for a limited number of plastic types in matrices with relatively little additional materials. Thus, much remains unknown about what parameters influence the detection limits of Raman spectroscopy for more environmentally relevant samples. To address this, this study utilizes Raman spectroscopy to detect six plastic particle types; 161 and 33 nm polystyrene, < 450 nm and 36 nm poly(ethylene terephthalate), 121 nm polypropylene, and 126 nm polyethylene; spiked into artificial saltwater, artificial freshwater, North Sea, Thames River, and Elbe River water. Overall, factors such as plastic particle properties, water matrix composition, and experimental setup were shown to influence the final limits of detection.
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Affiliation(s)
- Jessica Caldwell
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Laura Rodriguez-Lorenzo
- Water Quality Group, International Iberian Nanotechnology Laboratory (INL), Av. Mestre Jose Veiga s/n, 4715-330 Braga, Portugal
| | - Begoña Espiña
- Water Quality Group, International Iberian Nanotechnology Laboratory (INL), Av. Mestre Jose Veiga s/n, 4715-330 Braga, Portugal
| | - Aaron Beck
- GEOMAR - Helmholtz Center for Ocean Research, Wischhofstrasse 1-3, 24148 Kiel, Germany
| | - Friederike Stock
- German Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - Kathrin Voges
- German Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - Katsia Pabortsava
- National Oceanography Centre, European Way, Southampton SO14 3ZH, UK
| | | | - Alice Horton
- National Oceanography Centre, European Way, Southampton SO14 3ZH, UK
| | - Richard Lampitt
- National Oceanography Centre, European Way, Southampton SO14 3ZH, UK
| | | | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; Water Quality Group, International Iberian Nanotechnology Laboratory (INL), Av. Mestre Jose Veiga s/n, 4715-330 Braga, Portugal.
| | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland.
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2
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Balog S, de Almeida MS, Taladriz-Blanco P, Rothen-Rutishauser B, Petri-Fink A. Does the surface charge of the nanoparticles drive nanoparticle-cell membrane interactions? Curr Opin Biotechnol 2024; 87:103128. [PMID: 38581743 DOI: 10.1016/j.copbio.2024.103128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/08/2024] [Accepted: 03/13/2024] [Indexed: 04/08/2024]
Abstract
Classical Coulombic interaction, characterized by electrostatic interactions mediated through surface charges, is often regarded as the primary determinant in nanoparticles' (NPs) cellular association and internalization. However, the intricate physicochemical properties of particle surfaces, biomolecular coronas, and cell surfaces defy this oversimplified perspective. Moreover, the nanometrological techniques employed to characterize NPs in complex physiological fluids often exhibit limited accuracy and reproducibility. A more comprehensive understanding of nanoparticle-cell membrane interactions, extending beyond attractive forces between oppositely charged surfaces, necessitates the establishment of databases through rigorous physical, chemical, and biological characterization supported by nanoscale analytics. Additionally, computational approaches, such as in silico modeling and machine learning, play a crucial role in unraveling the complexities of these interactions.
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Affiliation(s)
- Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, National Center of Competence in Research Bio-Inspired Materials, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Mauro Sousa de Almeida
- Adolphe Merkle Institute, University of Fribourg, National Center of Competence in Research Bio-Inspired Materials, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, National Center of Competence in Research Bio-Inspired Materials, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Barbara Rothen-Rutishauser
- Adolphe Merkle Institute, University of Fribourg, National Center of Competence in Research Bio-Inspired Materials, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, National Center of Competence in Research Bio-Inspired Materials, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland.
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3
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Sorasan C, Taladriz-Blanco P, Rodriguez-Lorenzo L, Espiña B, Rosal R. New versus naturally aged greenhouse cover films: Degradation and micro-nanoplastics characterization under sunlight exposure. Sci Total Environ 2024; 918:170662. [PMID: 38316311 DOI: 10.1016/j.scitotenv.2024.170662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/22/2024] [Accepted: 02/01/2024] [Indexed: 02/07/2024]
Abstract
The understanding of microplastic degradation and its effects remains limited due to the absence of accurate analytical techniques for detecting and quantifying micro- and nanoplastics. In this study, we investigated the release of nanoplastics and small microplastics in water from low-density polyethylene (LDPE) greenhouse cover films under simulated sunlight exposure for six months. Our analysis included both new and naturally aged (used) cover films, enabling us to evaluate the impact of natural aging. Additionally, photooxidation effects were assessed by comparing irradiated and non-irradiated conditions. Scanning electron microscopy (SEM) and nanoparticle tracking analysis (NTA) confirmed the presence of particles below 1 μm in both irradiated and non-irradiated cover films. NTA revealed a clear effect of natural aging, with used films releasing more particles than new films but no impact of photooxidation, as irradiated and non-irradiated cover films released similar amounts of particles at each time point. Raman spectroscopy demonstrated the lower crystallinity of the released PE nanoplastics compared to the new films. Flow cytometry and total organic carbon data provided evidence of the release of additional material besides PE, and a clear effect of both simulated and natural aging, with photodegradation effects observed only for the new cover films. Finally, our results underscore the importance of studying the aging processes in both new and used plastic products using complementary techniques to assess the environmental fate and safety risks posed by plastics used in agriculture.
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Affiliation(s)
- Carmen Sorasan
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Alcalá de Henares, E-28871 Madrid, Spain
| | - Patricia Taladriz-Blanco
- International Iberian Nanotechnology Laboratory (INL), Water Quality Group, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal; Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers, 4, 1700 Fribourg, Switzerland.
| | - Laura Rodriguez-Lorenzo
- International Iberian Nanotechnology Laboratory (INL), Water Quality Group, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Begoña Espiña
- International Iberian Nanotechnology Laboratory (INL), Water Quality Group, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Roberto Rosal
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Alcalá de Henares, E-28871 Madrid, Spain
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Caldwell J, Taladriz-Blanco P, Rodriguez-Lorenzo L, Rothen-Rutishauser B, Petri-Fink A. Submicron- and nanoplastic detection at low micro- to nanogram concentrations using gold nanostar-based surface-enhanced Raman scattering (SERS) substrates. Environ Sci Nano 2024; 11:1000-1011. [PMID: 38496351 PMCID: PMC10939171 DOI: 10.1039/d3en00401e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 11/29/2023] [Indexed: 03/19/2024]
Abstract
The presence of submicron- (1 μm-100 nm) and nanoplastic (<100 nm) particles within various sample matrices, ranging from marine environments to foods and beverages, has become a topic of increasing interest in recent years. Despite this interest, very few analytical techniques are known that allow for the detection of these small plastic particles in the low concentration ranges that they are anticipated to be present at. Research focused on optimizing surface-enhanced Raman scattering (SERS) to enhance signal obtained in Raman spectroscopy has been shown to have great potential for the detection of plastic particles below conventional resolution limits. In this study, we produce SERS substrates composed of gold nanostars and assess their potential for submicron- and nanoplastic detection. The results show 33 nm polystyrene could be detected down to 1.25 μg mL-1 while 36 nm poly(ethylene terephthalate) was detected down to 5 μg mL-1. These results confirm the promising potential of the gold nanostar-based SERS substrates for nanoplastic detection. Furthermore, combined with findings for 121 nm polypropylene and 126 nm polyethylene particles, they highlight potential differences in analytical performance that depend on the properties of the plastics being studied.
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Affiliation(s)
- Jessica Caldwell
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 1700 Fribourg Switzerland
| | - Patricia Taladriz-Blanco
- Water Quality Group, International Iberian Nanotechnology Laboratory (INL) Av. Mestre Jose Veiga s/n 4715-330 Braga Portugal
| | - Laura Rodriguez-Lorenzo
- Water Quality Group, International Iberian Nanotechnology Laboratory (INL) Av. Mestre Jose Veiga s/n 4715-330 Braga Portugal
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 1700 Fribourg Switzerland
- Department of Chemistry, University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
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5
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Susnik E, Balog S, Taladriz-Blanco P, Petri-Fink A, Rothen-Rutishauser B. The Functions of Cholera Toxin Subunit B as a Modulator of Silica Nanoparticle Endocytosis. Toxins (Basel) 2023; 15:482. [PMID: 37624239 PMCID: PMC10467089 DOI: 10.3390/toxins15080482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/15/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023] Open
Abstract
The gastrointestinal tract is the main target of orally ingested nanoparticles (NPs) and at the same time is exposed to noxious substances, such as bacterial components. We investigated the interaction of 59 nm silica (SiO2) NPs with differentiated Caco-2 intestinal epithelial cells in the presence of cholera toxin subunit B (CTxB) and compared the effects to J774A.1 macrophages. CTxB can affect cellular functions and modulate endocytosis via binding to the monosialoganglioside (GM1) receptor, expressed on both cell lines. After stimulating macrophages with CTxB, we observed notable changes in the membrane structure but not in Caco-2 cells, and no secretion of the pro-inflammatory cytokine tumor necrosis factor-α (TNF-α) was detected. Cells were then exposed to 59 nm SiO2 NPs and CtxB sequentially and simultaneously, resulting in a high NP uptake in J774A.1 cells, but no uptake in Caco-2 cells was detected. Flow cytometry analysis revealed that the exposure of J774A.1 cells to CTxB resulted in a significant reduction in the uptake of SiO2 NPs. In contrast, the uptake of NPs by highly selective Caco-2 cells remained unaffected following CTxB exposure. Based on colocalization studies, CTxB and NPs might enter cells via shared endocytic pathways, followed by their sorting into different intracellular compartments. Our findings provide new insights into CTxB's function of modulating SiO2 NP uptake in phagocytic but not in differentiated intestine cells.
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Affiliation(s)
- Eva Susnik
- Adolphe Merkle Institute, University of Fribourg, 1700 Fribourg, Switzerland; (E.S.); (S.B.); (A.P.-F.)
| | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, 1700 Fribourg, Switzerland; (E.S.); (S.B.); (A.P.-F.)
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, 1700 Fribourg, Switzerland; (E.S.); (S.B.); (A.P.-F.)
- Department of Chemistry, University of Fribourg, 1700 Fribourg, Switzerland
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6
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Susnik E, Bazzoni A, Taladriz-Blanco P, Balog S, Moreno-Echeverri AM, Glaubitz C, Oliveira BB, Ferreira D, Baptista PV, Petri-Fink A, Rothen-Rutishauser B. Epidermal growth factor alters silica nanoparticle uptake and improves gold-nanoparticle-mediated gene silencing in A549 cells. Front Nanotechnol 2023; 5:1220514. [PMID: 37954478 PMCID: PMC7615298 DOI: 10.3389/fnano.2023.1220514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023] Open
Abstract
Introduction Delivery of therapeutic nanoparticles (NPs) to cancer cells represents a promising approach for biomedical applications. A key challenge for nanotechnology translation from the bench to the bedside is the low amount of administered NPs dose that effectively enters target cells. To improve NPs delivery, several studies proposed NPs conjugation with ligands, which specifically deliver NPs to target cells via receptor binding. One such example is epidermal growth factor (EGF), a peptide involved in cell signaling pathways that control cell division by binding to epidermal growth factor receptor (EGFR). However, very few studies assessed the influence of EGF present in the cell environment, on the cellular uptake of NPs. Methods We tested if the stimulation of EGFR-expressing lung carcinomacells A549 with EGF affects the uptake of 59 nm and 422 nm silica (SiO2) NPs. Additionally, we investigated whether the uptake enhancement can be achieved with gold NPs, suitable to downregulate the expression of cancer oncogene c-MYC. Results Our findings show that EGF binding to its receptor results in receptor autophosphorylation and initiate signaling pathways, leading to enhanced endocytosis of 59 nm SiO2 NPs, but not 422 nm SiO2 NPs. Additionally, we demonstrated an enhanced gold (Au) NPs endocytosis and subsequently a higher downregulation of c-MYC. Discussion These findings contribute to a better understanding of NPs uptake in the presence of EGF and that is a promising approach for improved NPs delivery.
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Affiliation(s)
- Eva Susnik
- Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland
| | - Amelie Bazzoni
- Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland
| | | | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland
| | | | | | - Beatriz Brito Oliveira
- i4HB, UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Daniela Ferreira
- i4HB, UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Pedro Viana Baptista
- i4HB, UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland
- Department of Chemistry, University of Fribourg, Fribourg, Switzerland
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7
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Caldwell J, Loussert-Fonta C, Toullec G, Heidelberg Lyndby N, Haenni B, Taladriz-Blanco P, Espiña B, Rothen-Rutishauser B, Petri-Fink A. Correlative Light, Electron Microscopy and Raman Spectroscopy Workflow To Detect and Observe Microplastic Interactions with Whole Jellyfish. Environ Sci Technol 2023; 57:6664-6672. [PMID: 37058431 PMCID: PMC10134485 DOI: 10.1021/acs.est.2c09233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 06/19/2023]
Abstract
Many researchers have turned their attention to understanding microplastic interaction with marine fauna. Efforts are being made to monitor exposure pathways and concentrations and to assess the impact such interactions may have. To answer these questions, it is important to select appropriate experimental parameters and analytical protocols. This study focuses on medusae of Cassiopea andromeda jellyfish: a unique benthic jellyfish known to favor (sub-)tropical coastal regions which are potentially exposed to plastic waste from land-based sources. Juvenile medusae were exposed to fluorescent poly(ethylene terephthalate) and polypropylene microplastics (<300 μm), resin embedded, and sectioned before analysis with confocal laser scanning microscopy as well as transmission electron microscopy and Raman spectroscopy. Results show that the fluorescent microplastics were stable enough to be detected with the optimized analytical protocol presented and that their observed interaction with medusae occurs in a manner which is likely driven by the microplastic properties (e.g., density and hydrophobicity).
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Affiliation(s)
- Jessica Caldwell
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Céline Loussert-Fonta
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Gaëlle Toullec
- Laboratory
for Biological Geochemistry, School of Architecture, Civil and Environmental
Engineering, Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rte Cantonale, CH-1015 Lausanne, Switzerland
| | - Niclas Heidelberg Lyndby
- Laboratory
for Biological Geochemistry, School of Architecture, Civil and Environmental
Engineering, Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rte Cantonale, CH-1015 Lausanne, Switzerland
| | - Beat Haenni
- Institute
of Anatomy, University of Bern, Baltzerstrasse 2, 3012 Bern, Switzerland
| | - Patricia Taladriz-Blanco
- Water
Quality Group, International Iberian Nanotechnology
Laboratory (INL), Av. Mestre Jose Veiga s/n, 4715-330 Braga, Portugal
| | - Begoña Espiña
- Water
Quality Group, International Iberian Nanotechnology
Laboratory (INL), Av. Mestre Jose Veiga s/n, 4715-330 Braga, Portugal
| | | | - Alke Petri-Fink
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
- Department
of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
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Lee A, Gosnell N, Milinkovic D, Taladriz-Blanco P, Rothen-Rutishauser B, Petri-Fink A. Layer-by-Layer siRNA Particle Assemblies for Localized Delivery of siRNA to Epithelial Cells through Surface-Mediated Particle Uptake. ACS Appl Bio Mater 2023; 6:83-92. [PMID: 36598879 PMCID: PMC9847476 DOI: 10.1021/acsabm.2c00668] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 12/08/2022] [Indexed: 01/05/2023]
Abstract
Localized delivery of small interfering RNA (siRNA) is a promising approach for spatial control of cell responses at biomaterial interfaces. Layer-by-layer (LbL) assembly of siRNA with cationic polyelectrolytes has been used in film and nanoparticle vectors for transfection. Herein, we combine the ability of particles to efficiently deliver siRNA with the ability of film polyelectrolyte multilayers to act locally. LbL particles were prepared with alternating layers of poly(l-arginine) and siRNA and capped with hyaluronic acid. Negatively charged LbL particles were subsequently assembled on the poly(l-lysine)-functionalized substrate to form a LbL particle-decorated surface. Cells grown in contact with the particle-decorated surface were able to survive, internalize particles, and undergo gene silencing. This work shows that particle-decorated surfaces can be engineered by using electrostatic interactions and used to deliver therapeutic payloads for cell-instructive biointerfaces.
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Affiliation(s)
- Aaron Lee
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Natalia Gosnell
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Daela Milinkovic
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Patricia Taladriz-Blanco
- International
Iberian Nanotechnology Laboratory, Water
Quality Group, Avenue
Mestre Jose Veiga s/n, 4715-330 Braga, Portugal
| | | | - Alke Petri-Fink
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
- Department
of Chemistry, University of Fribourg, Chemin du Musee 9, 1700 Fribourg, Switzerland
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9
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Spiaggia G, Taladriz-Blanco P, Hengsberger S, Septiadi D, Geers C, Lee A, Rothen-Rutishauser B, Petri-Fink A. A Near-Infrared Mechanically Switchable Elastomeric Film as a Dynamic Cell Culture Substrate. Biomedicines 2022; 11:biomedicines11010030. [PMID: 36672538 PMCID: PMC9855853 DOI: 10.3390/biomedicines11010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/09/2022] [Accepted: 12/17/2022] [Indexed: 12/25/2022] Open
Abstract
Commercial static cell culture substrates can usually not change their physical properties over time, resulting in a limited representation of the variation in biomechanical cues in vivo. To overcome this limitation, approaches incorporating gold nanoparticles to act as transducers to external stimuli have been employed. In this work, gold nanorods were embedded in an elastomeric matrix and used as photothermal transducers to fabricate biocompatible light-responsive substrates. The nanocomposite films analysed by lock-in thermography and nanoindentation show a homogeneous heat distribution and a greater stiffness when irradiated with NIR light. After irradiation, the initial stiffness values were recovered. In vitro experiments performed during NIR irradiation with NIH-3T3 fibroblasts demonstrated that these films were biocompatible and cells remained viable. Cells cultured on the light stiffened nanocomposite exhibited a greater proliferation rate and stronger focal adhesion clustering, indicating increased cell-surface binding strength.
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Affiliation(s)
- Giovanni Spiaggia
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
- International Iberian Nanotechnology Laboratory (INL), Water Quality Group, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
- Correspondence: (P.T.-B.); (A.P.-F.)
| | - Stefan Hengsberger
- School of Engineering and Architecture (HEIA-FR), HES-SO, University of Applied Science and Arts in Western Switzerland, Boulevard de Pérolles 80, 1700 Fribourg, Switzerland
| | - Dedy Septiadi
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Christoph Geers
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Aaron Lee
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
- Correspondence: (P.T.-B.); (A.P.-F.)
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10
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Moreno-Echeverri AM, Susnik E, Vanhecke D, Taladriz-Blanco P, Balog S, Petri-Fink A, Rothen-Rutishauser B. Pitfalls in methods to study colocalization of nanoparticles in mouse macrophage lysosomes. J Nanobiotechnology 2022; 20:464. [PMID: 36309696 PMCID: PMC9618187 DOI: 10.1186/s12951-022-01670-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 10/12/2022] [Indexed: 11/10/2022] Open
Abstract
Background In the field of nanoscience there is an increasing interest to follow dynamics of nanoparticles (NP) in cells with an emphasis on endo-lysosomal pathways and long-term NP fate. During our research on this topic, we encountered several pitfalls, which can bias the experimental outcome. We address some of these pitfalls and suggest possible solutions. The accuracy of fluorescence microscopy methods has an important role in obtaining insights into NP interactions with lysosomes at the single cell level including quantification of NP uptake in a specific cell type. Methods Here we use J774A.1 cells as a model for professional phagocytes. We expose them to fluorescently-labelled amorphous silica NP with different sizes and quantify the colocalization of fluorescently-labelled NP with lysosomes over time. We focus on confocal laser scanning microscopy (CLSM) to obtain 3D spatial information and follow live cell imaging to study NP colocalization with lysosomes. Results We evaluate different experimental parameters that can bias the colocalization coefficients (i.e., Pearson’s and Manders’), such as the interference of phenol red in the cell culture medium with the fluorescence intensity and image post-processing (effect of spatial resolution, optical slice thickness, pixel saturation and bit depth). Additionally, we determine the correlation coefficients for NP entering the lysosomes under four different experimental set-ups. First, we found out that not only Pearson’s, but also Manders’ correlation coefficient should be considered in lysosome-NP colocalization studies; second, there is a difference in NP colocalization when using NP of different sizes and fluorescence dyes and last, the correlation coefficients might change depending on live-cell and fixed-cell imaging set-up. Conclusions The results summarize detailed steps and recommendations for the experimental design, staining, sample preparation and imaging to improve the reproducibility of colocalization studies between the NP and lysosomes. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01670-9.
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11
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Lee A, Sousa de Almeida M, Milinkovic D, Septiadi D, Taladriz-Blanco P, Loussert-Fonta C, Balog S, Bazzoni A, Rothen-Rutishauser B, Petri-Fink A. Substrate stiffness reduces particle uptake by epithelial cells and macrophages in a size-dependent manner through mechanoregulation. Nanoscale 2022; 14:15141-15155. [PMID: 36205559 PMCID: PMC9585528 DOI: 10.1039/d2nr03792k] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/30/2022] [Indexed: 05/23/2023]
Abstract
Cells continuously exert forces on their environment and respond to changes in mechanical forces by altering their behaviour. Many pathologies such as cancer and fibrosis are hallmarked by dysregulation in the extracellular matrix, driving aberrant behaviour through mechanotransduction pathways. We demonstrate that substrate stiffness can be used to regulate cellular endocytosis of particles in a size-dependent fashion. Culture of A549 epithelial cells and J774A.1 macrophages on polystyrene/glass (stiff) and polydimethylsiloxane (soft) substrates indicated that particle uptake is increased up to six times for A549 and two times for macrophages when cells are grown in softer environments. Furthermore, we altered surface characteristics through the attachment of submicron-sized particles as a method to locally engineer substrate stiffness and topography to investigate the biomechanical changes which occurred within adherent epithelial cells, i.e. characterization of A549 cell spreading and focal adhesion maturation. Consequently, decreasing substrate rigidity and particle-based topography led to a reduction of focal adhesion size. Moreover, expression levels of Yes-associated protein were found to correlate with the degree of particle endocytosis. A thorough appreciation of the mechanical cues may lead to improved solutions to optimize nanomedicine approaches for treatment of cancer and other diseases with abnormal mechanosignalling.
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Affiliation(s)
- Aaron Lee
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
| | - Mauro Sousa de Almeida
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
| | - Daela Milinkovic
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
| | - Dedy Septiadi
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
- International Iberian Nanotechnology Laboratory (INL), Water Quality Group, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Céline Loussert-Fonta
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
| | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
| | - Amelie Bazzoni
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
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12
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Yajan P, Yulianto N, Saba M, Dharmawan AB, Sousa de Almeida M, Taladriz-Blanco P, Wasisto HS, Rothen-Rutishauser B, Petri-Fink A, Septiadi D. Intracellular gold nanoparticles influence light scattering and facilitate amplified spontaneous emission generation. J Colloid Interface Sci 2022; 622:914-923. [PMID: 35561611 DOI: 10.1016/j.jcis.2022.04.149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 04/05/2022] [Accepted: 04/25/2022] [Indexed: 11/15/2022]
Abstract
Generation of amplified stimulated emission inside mammalian cells has paved the way for a novel bioimaging and cell sensing approach. Single cells carrying gain media (e.g., fluorescent molecules) are placed inside an optical cavity, allowing the production of intracellular laser emission upon sufficient optical pumping. Here, we investigate the possibility to trigger another amplified emission phenomenon (i.e., amplified spontaneous emission or ASE) inside two different cell types, namely macrophage and epithelial cells from different species and tissues, in the presence of a poorly reflecting cavity. Furthermore, the resulting ASE properties can be enhanced by introducing plasmonic nanoparticles. The presence of gold nanoparticles (AuNPs) in rhodamine 6G-labeled A549 epithelial cells results in higher intensity and lowered ASE threshold in comparison to cells without nanoparticles, due to the effect of plasmonic field enhancement. An increase in intracellular concentration of AuNPs in rhodamine 6G-labeled macrophages is, however, responsible for the twofold increase in the ASE threshold and a reduction in the ASE intensity, dominantly due to a suppressed in and out-coupling of light at high nanoparticle concentrations.
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Affiliation(s)
- Phattadon Yajan
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Nursidik Yulianto
- Institute of Semiconductor Technology, Technische Universität Braunschweig, Hans-Sommer-Straße 66, 38106 Braunschweig, Germany; Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6, 38106 Braunschweig, Germany; Research Center for Photonics, National Research and Innovation Agency (BRIN), Kawasan Puspitek Serpong, 15314 Tangerang Selatan, Indonesia
| | - Matthias Saba
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Agus Budi Dharmawan
- Institute of Semiconductor Technology, Technische Universität Braunschweig, Hans-Sommer-Straße 66, 38106 Braunschweig, Germany; Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6, 38106 Braunschweig, Germany; Faculty of Information Technology, Universitas Tarumanagara, Jl. Letjen S. Parman No. 1, 11440 Jakarta, Indonesia
| | - Mauro Sousa de Almeida
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Hutomo Suryo Wasisto
- Institute of Semiconductor Technology, Technische Universität Braunschweig, Hans-Sommer-Straße 66, 38106 Braunschweig, Germany; Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6, 38106 Braunschweig, Germany; PT Nanosense Instrument Indonesia, Umbulharjo, 55167 Yogyakarta, Indonesia
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
| | - Dedy Septiadi
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
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13
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Caldwell J, Taladriz-Blanco P, Lehner R, Lubskyy A, Ortuso RD, Rothen-Rutishauser B, Petri-Fink A. The micro-, submicron-, and nanoplastic hunt: A review of detection methods for plastic particles. Chemosphere 2022; 293:133514. [PMID: 35016963 DOI: 10.1016/j.chemosphere.2022.133514] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/29/2021] [Accepted: 12/31/2021] [Indexed: 06/14/2023]
Abstract
Plastic particle pollution has been shown to be almost completely ubiquitous within our surrounding environment. This ubiquity in combination with a variety of unique properties (e.g. density, hydrophobicity, surface functionalization, particle shape and size, transition temperatures, and mechanical properties) and the ever-increasing levels of plastic production and use has begun to garner heightened levels of interest within the scientific community. However, as a result of these properties, plastic particles are often reported to be challenging to study in complex (i.e. real) environments. Therefore, this review aims to summarize research generated on multiple facets of the micro- and nanoplastics field; ranging from size and shape definitions to detection and characterization techniques to generating reference particles; in order to provide a more complete understanding of the current strategies for the analysis of plastic particles. This information is then used to provide generalized recommendations for researchers to consider as they attempt to study plastics in analytically complex environments; including method validation using reference particles obtained via the presented creation methods, encouraging efforts towards method standardization through the reporting of all technical details utilized in a study, and providing analytical pathway recommendations depending upon the exact knowledge desired and samples being studied.
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Affiliation(s)
- Jessica Caldwell
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland; Water Quality Group, International Iberian Nanotechnology Laboratory (INL), A v. Mestre José Veiga s/n, 4715-330, Braga, Portugal
| | - Roman Lehner
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland; Sail & Explore Association, Kramgasse 18, 3011, Bern, Switzerland
| | - Andriy Lubskyy
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
| | - Roberto Diego Ortuso
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland; Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland.
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14
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Taladriz-Blanco P, Spuch-Calvar M, Del Prado A, Weder C, Rother-Rutishauser B, Petri-Fink A, Rodriguez-Lorenzo L. Impurities in polyvinylpyrrolidone: the key factor in the synthesis of gold nanostars. Nanoscale Adv 2022; 4:387-392. [PMID: 35178499 PMCID: PMC8765127 DOI: 10.1039/d1na00711d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/26/2021] [Indexed: 05/11/2023]
Abstract
Control over the synthesis of anisotropic nanoparticles is crucial as slight differences in their size, shape, sharpness, or the number of tips in the case of gold nanostars, has an inordinate influence on their properties and functionality for future applications. Herein, we show that the supplier and purity of polyvinylpyrrolidone (PVP) can significantly alter the synthesis of gold nanostars, demonstrating that impurities, not PVP itself, are the main factor responsible for star-like shape formation. We demonstrate that in the presence of pure PVP and N,N-dimethylformamide, the use of hydrazine leads to the formation of branched nanoparticles. This synthetic approach opens the door to solving issues associated with the use of commercial PVP during the synthesis of gold nanostars.
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Affiliation(s)
- Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 Fribourg CH-1700 Switzerland
- International Iberian Nanotechnology Laboratory (INL), Water Quality group Av. Mestre José Veiga s/n 4715-330 Braga Portugal
| | - Miguel Spuch-Calvar
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 Fribourg CH-1700 Switzerland
| | - Anselmo Del Prado
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 Fribourg CH-1700 Switzerland
| | - Christoph Weder
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 Fribourg CH-1700 Switzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 Fribourg CH-1700 Switzerland
- Chemistry Department, University of Fribourg Chemin du Musée 9 Fribourg CH-1700 Switzerland
| | - Laura Rodriguez-Lorenzo
- International Iberian Nanotechnology Laboratory (INL), Water Quality group Av. Mestre José Veiga s/n 4715-330 Braga Portugal
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15
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Spiaggia G, Taladriz-Blanco P, Septiadi D, Ortuso RD, Lee A, Trappe V, Rothen-Rutishauser B, Petri-Fink A. Aligned and Oriented Collagen Nanocomposite Fibers as Substrates to Activate Fibroblasts. ACS Appl Bio Mater 2021; 4:8316-8324. [PMID: 35005948 DOI: 10.1021/acsabm.1c00844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Purified collagen possesses weak mechanical properties, hindering its broad application in tissue engineering. Strategies based on manipulating the hydrogel to induce fiber formation or incorporate nanomaterials have been proposed to overcome this issue. Herein, we use a microfluidic device to fabricate, for the first time, collagen hydrogels with aligned and oriented fibers doped with gold nanoparticles and carbon nanotubes. Results based on rheology, atomic force microscopy, and scanning electron microscopy reveal the formation of aligned and oriented collagen fibers possessing greater rigidity and stiffness on the doped hydrogels in comparison with native collagen. The mechanical properties of the hydrogels increased with the nanomaterial loading percentage and the stiffest formulations were those prepared in the presence of carbon nanotubes. We further evaluate the in vitro response of NIH-3T3 fibroblasts to the change in stiffness. The cells were found to be viable on all substrates with directional cell growth observed for the carbon nanotube-doped collagen fibers. No significant differences in the cell area, aspect ratio, and intensification of focal adhesions driven by the increase in stiffness were noted. Nonetheless, fibroblast proliferation and secretion of TGF-β1 were greater on the hydrogels doped with carbon nanotubes. This nanomaterial-collagen composite provides unique features for cell and tissue substrate applications.
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Affiliation(s)
- Giovanni Spiaggia
- Adolphe Merkle Institute, Université de Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, Université de Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Dedy Septiadi
- Adolphe Merkle Institute, Université de Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Roberto Diego Ortuso
- Adolphe Merkle Institute, Université de Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Aaron Lee
- Adolphe Merkle Institute, Université de Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Veronique Trappe
- Department of Physics, University of Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, Université de Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.,Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
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16
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Caldwell J, Taladriz-Blanco P, Rothen-Rutishauser B, Petri-Fink A. Additional Commentary on the Detection and Quantification of Plastic Micro- and Nanoparticles in Tea Samples. Chimia (Aarau) 2021; 75:882-885. [PMID: 34728016 DOI: 10.2533/chimia.2021.882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The study of plastic particles, particularly those in the micro-, sub-micro-, and nano-size ranges, within food and beverages has gained increasing interest within recent years. However, many analytical techniques have limits of detection which hinder their use for the study of these particles in these sample matrices. In addition, remaining contaminants from the matrices can interfere with the signals from plastic particles. Thus, great care must be given to sample preparation and data interpretation to ensure accurate results. This study proposes the use of sample purification through chemical digestion protocols to facilitate the study of plastic particles present in tea samples, and serves to highlight technical limitations which must be overcome in future studies.
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Affiliation(s)
- Jessica Caldwell
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland; Water Quality Group, International Iberian Nanotechnology Laboratory (INL), A. v. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland; Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland;,
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17
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Sousa de Almeida M, Susnik E, Drasler B, Taladriz-Blanco P, Petri-Fink A, Rothen-Rutishauser B. Understanding nanoparticle endocytosis to improve targeting strategies in nanomedicine. Chem Soc Rev 2021; 50:5397-5434. [PMID: 33666625 PMCID: PMC8111542 DOI: 10.1039/d0cs01127d] [Citation(s) in RCA: 308] [Impact Index Per Article: 102.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Indexed: 12/19/2022]
Abstract
Nanoparticles (NPs) have attracted considerable attention in various fields, such as cosmetics, the food industry, material design, and nanomedicine. In particular, the fast-moving field of nanomedicine takes advantage of features of NPs for the detection and treatment of different types of cancer, fibrosis, inflammation, arthritis as well as neurodegenerative and gastrointestinal diseases. To this end, a detailed understanding of the NP uptake mechanisms by cells and intracellular localization is essential for safe and efficient therapeutic applications. In the first part of this review, we describe the several endocytic pathways involved in the internalization of NPs and we discuss the impact of the physicochemical properties of NPs on this process. In addition, the potential challenges of using various inhibitors, endocytic markers and genetic approaches to study endocytosis are addressed along with the principal (semi) quantification methods of NP uptake. The second part focuses on synthetic and bio-inspired substances, which can stimulate or decrease the cellular uptake of NPs. This approach could be interesting in nanomedicine where a high accumulation of drugs in the target cells is desirable and clearance by immune cells is to be avoided. This review contributes to an improved understanding of NP endocytic pathways and reveals potential substances, which can be used in nanomedicine to improve NP delivery.
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Affiliation(s)
- Mauro Sousa de Almeida
- Adolphe Merkle Institute, University of FribourgChemin des Verdiers 41700 FribourgSwitzerland
| | - Eva Susnik
- Adolphe Merkle Institute, University of FribourgChemin des Verdiers 41700 FribourgSwitzerland
| | - Barbara Drasler
- Adolphe Merkle Institute, University of FribourgChemin des Verdiers 41700 FribourgSwitzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of FribourgChemin des Verdiers 41700 FribourgSwitzerland
- Department of Chemistry, University of FribourgChemin du Musée 91700 FribourgSwitzerland
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18
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Caldwell J, Taladriz-Blanco P, Rothen-Rutishauser B, Petri-Fink A. Detection of Sub-Micro- and Nanoplastic Particles on Gold Nanoparticle-Based Substrates through Surface-Enhanced Raman Scattering (SERS) Spectroscopy. Nanomaterials (Basel) 2021; 11:1149. [PMID: 33925012 PMCID: PMC8146356 DOI: 10.3390/nano11051149] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/20/2021] [Accepted: 04/23/2021] [Indexed: 01/22/2023]
Abstract
Small plastic particles such as micro- (<5 mm), sub-micro- (1 µm-100 nm) and nanoplastics (<100 nm) are known to be ubiquitous within our surrounding environment. However, to date relatively few methods exist for the reliable detection of nanoplastic particles in relevant sample matrices such as foods or environmental samples. This lack of relevant data is likely a result of key limitations (e.g., resolution and/or scattering efficiency) for common analytical techniques such as Fourier transform infrared or Raman spectroscopy. This study aims to address this knowledge gap in the field through the creation of surface-enhanced Raman scattering spectroscopy substrates utilizing spherical gold nanoparticles with 14 nm and 46 nm diameters to improve the scattering signal obtained during Raman spectroscopy measurements. The substrates are then used to analyze polystyrene particles with sizes of 161 nm or 33 nm and poly(ethylene terephthalate) particles with an average size of 62 nm. Through this technique, plastic particles could be detected at concentrations as low as 10 µg/mL, and analytical enhancement factors of up to 446 were achieved.
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Affiliation(s)
- Jessica Caldwell
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (J.C.); (B.R.-R.)
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (J.C.); (B.R.-R.)
| | - Barbara Rothen-Rutishauser
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (J.C.); (B.R.-R.)
| | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (J.C.); (B.R.-R.)
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
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19
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Steinmetz L, Geers C, Balog S, Bonmarin M, Rodriguez-Lorenzo L, Taladriz-Blanco P, Rothen-Rutishauser B, Petri-Fink A. A comparative study of silver nanoparticle dissolution under physiological conditions. Nanoscale Adv 2020; 2:5760-5768. [PMID: 36133890 PMCID: PMC9417474 DOI: 10.1039/d0na00733a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/14/2020] [Indexed: 06/12/2023]
Abstract
Upon dissolution of silver nanoparticles, silver ions are released into the environment, which are known to induce adverse effects. However, since dissolution studies are predominantly performed in water and/or at room temperature, the effects of biological media and physiologically relevant temperature on the dissolution rate are not considered. Here, we investigate silver nanoparticle dissolution trends based on their plasmonic properties under biologically relevant conditions, i.e. in biological media at 37 °C over a period of 24 h. The studied nanoparticles, surface-functionalized with polyvinylpyrrolidone, beta-cyclodextrin/polyvinylpyrrolidone, and starch/polyvinylpyrrolidone, were analysed by UV-Vis spectroscopy, lock-in thermography and depolarized dynamic light scattering to evaluate the influence of these coatings on silver nanoparticle dissolution. Transmission electron microscopy was employed to visualize the reduction of the nanoparticle core diameters. Consequently, the advantages and limitations of these analytical techniques are discussed. To assess the effects of temperature on the degree of dissolution, the results of experiments performed at biological temperature were compared to those obtained at room temperature. Dissolution is often enhanced at elevated temperatures, but has to be determined individually for every specific condition. Furthermore, we evaluated potential nanoparticle aggregation. Our results highlight that additional surface coatings do not necessarily hinder the dissolution or aggregation of silver nanoparticles.
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Affiliation(s)
- Lukas Steinmetz
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 1700 Fribourg Switzerland
| | - Christoph Geers
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 1700 Fribourg Switzerland
| | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 1700 Fribourg Switzerland
| | - Mathias Bonmarin
- School of Engineering, Zurich University of Applied Sciences Technikumstrasse 9 8400 Winterthur Switzerland
| | - Laura Rodriguez-Lorenzo
- International Iberian Nanotechnology Laboratory (INL), Water Quality Group Av. Mestre José Veiga s/n 4715-330 Braga Portugal
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 1700 Fribourg Switzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg Chemin des Verdiers 4 1700 Fribourg Switzerland
- Chemistry Department, University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
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20
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Susnik E, Taladriz-Blanco P, Drasler B, Balog S, Petri-Fink A, Rothen-Rutishauser B. Increased Uptake of Silica Nanoparticles in Inflamed Macrophages but Not upon Co-Exposure to Micron-Sized Particles. Cells 2020; 9:cells9092099. [PMID: 32942641 PMCID: PMC7564500 DOI: 10.3390/cells9092099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/04/2020] [Accepted: 09/12/2020] [Indexed: 11/16/2022] Open
Abstract
Silica nanoparticles (NPs) are widely used in various industrial and biomedical applications. Little is known about the cellular uptake of co-exposed silica particles, as can be expected in our daily life. In addition, an inflamed microenvironment might affect a NP’s uptake and a cell’s physiological response. Herein, prestimulated mouse J774A.1 macrophages with bacterial lipopolysaccharide were post-exposed to micron- and nanosized silica particles, either alone or together, i.e., simultaneously or sequentially, for different time points. The results indicated a morphological change and increased expression of tumor necrosis factor alpha in lipopolysaccharide prestimulated cells, suggesting a M1-polarization phenotype. Confocal laser scanning microscopy revealed the intracellular accumulation and uptake of both particle types for all exposure conditions. A flow cytometry analysis showed an increased particle uptake in lipopolysaccharide prestimulated macrophages. However, no differences were observed in particle uptakes between single- and co-exposure conditions. We did not observe any colocalization between the two silica (SiO2) particles. However, there was a positive colocalization between lysosomes and nanosized silica but only a few colocalized events with micro-sized silica particles. This suggests differential intracellular localizations of silica particles in macrophages and a possible activation of distinct endocytic pathways. The results demonstrate that the cellular uptake of NPs is modulated in inflamed macrophages but not in the presence of micron-sized particles.
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Affiliation(s)
- Eva Susnik
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (E.S.); (P.T.-B.); (B.D.); (S.B.); (A.P.-F.)
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (E.S.); (P.T.-B.); (B.D.); (S.B.); (A.P.-F.)
| | - Barbara Drasler
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (E.S.); (P.T.-B.); (B.D.); (S.B.); (A.P.-F.)
| | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (E.S.); (P.T.-B.); (B.D.); (S.B.); (A.P.-F.)
| | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (E.S.); (P.T.-B.); (B.D.); (S.B.); (A.P.-F.)
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
| | - Barbara Rothen-Rutishauser
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland; (E.S.); (P.T.-B.); (B.D.); (S.B.); (A.P.-F.)
- Correspondence: ; Tel.: +41-26-300-95-02
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21
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Steinmetz L, Bourquin J, Barosova H, Haeni L, Caldwell J, Milosevic A, Geers C, Bonmarin M, Taladriz-Blanco P, Rothen-Rutishauser B, Petri-Fink A. Rapid and sensitive quantification of cell-associated multi-walled carbon nanotubes. Nanoscale 2020; 12:17362-17372. [PMID: 32789375 DOI: 10.1039/d0nr03330h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Evaluating nanomaterial uptake and association by cells is relevant for in vitro studies related to safe-by-design approaches, nanomedicine or applications in photothermal therapy. However, standard analytical techniques are time-consuming, involve complex sample preparation or include labelling of the investigated sample system with e.g. fluorescent dyes. Here, we explore lock-in thermography to analyse and compare the association trends of epithelial cells, mesothelial cells, and macrophages exposed to gold nanoparticles and multi-walled carbon nanotubes over 24 h. The presence of nanomaterials in the cells was confirmed by dark field and transmission electron microscopy. The results obtained by lock-in thermography for gold nanoparticles were validated with inductively coupled plasma optical emission spectrometry; with data collected showing a good agreement between both techniques. Furthermore, we demonstrate the detection and quantification of carbon nanotube-cell association in a straightforward, non-destructive, and non-intrusive manner without the need to label the carbon nanotubes. Our results display the first approach in utilizing thermography to assess the carbon nanotube amount in cellular environments.
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Affiliation(s)
- Lukas Steinmetz
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland.
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22
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Taladriz-Blanco P, Rothen-Rutishauser B, Petri-Fink A, Balog S. Versatile Macroscale Concentration Gradients of Nanoparticles in Soft Nanocomposites. Small 2020; 16:e1905192. [PMID: 31971354 DOI: 10.1002/smll.201905192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 12/14/2019] [Indexed: 06/10/2023]
Abstract
Nanocomposite materials benefit from the diverse physicochemical properties featured by nanoparticles, and the presence of nanoparticle concentration gradients can lend functions to macroscopic materials beyond the realm of classical nanocomposites. It is shown here that linearity and time-shift invariance obtained via the synergism of two independent physical phenomena-translational self-diffusion and shear-driven dispersion-may give access to an exceptionally high degree of flexibility in the design of scalable and programmable long-range concentration gradients of nanoparticles in solidifiable liquid matrices.
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Affiliation(s)
- Patricia Taladriz-Blanco
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
- Chemistry Department, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
| | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
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23
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Abstract
Taylor dispersion is a microfluidic analytical technique with a high dynamic range and therefore is suited well to measuring the hydrodynamic radius of small molecules, proteins, supramolecular complexes, macromolecules, nanoparticles and their self-assembly. Here we calculate an unaddressed yet fundamental property: the limit of resolution, which is defined as the smallest change in the hydrodynamic radius that Taylor dispersion can resolve accurately and precisely. Using concepts of probability theory and inferential statistics, we present a comprehensive theoretical approach, addressing uniform and polydisperise particle systems, which involve either model-based or numerical analyses. We find a straightforward scaling relationship in which the resolution limit is linearly proportional to the optical-extinction-weighted average hydrodynamic radius of the particle systems.
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Affiliation(s)
- Patricia Taladriz-Blanco
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland.,Chemistry Department , University of Fribourg , Chemin du Musée 9 , 1700 Fribourg , Switzerland
| | - Sandor Balog
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
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24
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Abstract
Taylor dispersion is capable of measuring accurately the hydrodynamic radius over several orders of magnitude. Accordingly, it is now a highly competitive technique dedicated to characterizing small molecules, proteins, macromolecules, nanoparticles, and their self-assembly. Regardless, an in-depth analysis addressing the precision of the technique, being a key indicator of reproducibility, is not available. Benefiting from analytical modeling and statistical analysis, we address error propagation and present a comprehensive theoretical study of the precision of Taylor dispersion. Theory is then compared against experiment, and we find full consistency. Our results are most helpful when the design, objectives, or control of analytical quality is in focus.
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Affiliation(s)
- Patricia Taladriz-Blanco
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland.,Chemistry Department , University of Fribourg , Chemin du Musée 9 , 1700 Fribourg , Switzerland
| | - Sandor Balog
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
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25
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Bourquin J, Septiadi D, Vanhecke D, Balog S, Steinmetz L, Spuch-Calvar M, Taladriz-Blanco P, Petri-Fink A, Rothen-Rutishauser B. Reduction of Nanoparticle Load in Cells by Mitosis but Not Exocytosis. ACS Nano 2019; 13:7759-7770. [PMID: 31276366 DOI: 10.1021/acsnano.9b01604] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The long-term fate of biomedically relevant nanoparticles (NPs) at the single cell level after uptake is not fully understood yet. We report that lysosomal exocytosis of NPs is not a mechanism to reduce the particle load. Biopersistent NPs such as nonporous silica and gold remain in cells for a prolonged time. The only reduction of the intracellular NP number is observed via cell division, e.g., mitosis. Additionally, NP distribution after cell division is observed to be asymmetrical, likely due to the inhomogeneous location and distribution of the NP-loaded intracellular vesicles in the mother cells. These findings are important for biomedical and hazard studies as the NP load per cell can vary significantly. Furthermore, we highlight the possibility of biopersistent NP accumulation over time within the mononuclear phagocyte system.
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Affiliation(s)
- Joël Bourquin
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
| | - Dedy Septiadi
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
| | - Dimitri Vanhecke
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
| | - Sandor Balog
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
| | - Lukas Steinmetz
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
| | - Miguel Spuch-Calvar
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
| | - Patricia Taladriz-Blanco
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
| | - Alke Petri-Fink
- Adolphe Merkle Institute , University of Fribourg , Chemin des Verdiers 4 , 1700 Fribourg , Switzerland
- Department of Chemistry , University of Fribourg , Chemin du Musée 9 , 1700 Fribourg , Switzerland
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26
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Acuña A, Basílio N, Parajó M, Mejuto JC, Pérez-Juste J, Taladriz-Blanco P, Garcia-Rio L. Nitric oxide release from a cucurbituril encapsulated NO-donor. Org Biomol Chem 2018; 16:4272-4278. [DOI: 10.1039/c8ob00895g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The denitrosation of a S-nitrosothiol derivative, nitrosomercaptopyridine (SNO+), can be inhibited by incorporation into the cucurbit[7]uril cavity. Owing to the reversible character of host : guest complexation, SNO+ can be expelled from the host cavity through the application of a chemical stimulus allowing controlled nitric oxide release.
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Affiliation(s)
- A. Acuña
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS)
- Departamento de Química Física
- Universidade de Santiago
- 15782 Santiago
- Spain
| | - N. Basílio
- LAQV
- REQUIMTE
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade NOVA de Lisboa
| | - M. Parajó
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS)
- Departamento de Química Física
- Universidade de Santiago
- 15782 Santiago
- Spain
| | - J. C. Mejuto
- Departamento de Química Física
- Facultad de Ciencias
- Universidade de Vigo
- E32004 Ourense
- Spain
| | - J. Pérez-Juste
- Departamento de Química Física and CINBIO
- Universidade de Vigo
- 36310 Vigo
- Spain
| | - P. Taladriz-Blanco
- Departamento de Química Física and CINBIO
- Universidade de Vigo
- 36310 Vigo
- Spain
| | - L. Garcia-Rio
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS)
- Departamento de Química Física
- Universidade de Santiago
- 15782 Santiago
- Spain
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27
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Baldim V, Ismail A, Taladriz-Blanco P, Griveau S, de Oliveira MG, Bedioui F. Amperometric Quantification of S-Nitrosoglutathione Using Gold Nanoparticles: A Step toward Determination of S-Nitrosothiols in Plasma. Anal Chem 2016; 88:3115-20. [DOI: 10.1021/acs.analchem.5b04035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Victor Baldim
- Institute
of Chemistry, University of Campinas, UNICAMP, Campinas, São
Paulo, 13083-970, Brazil
- Chimie ParisTech,
PSL Research University, Unité de Technologies Chimiques et
Biologiques pour la Santé (UTCBS), 75005 Paris, France
- INSERM, UTCBS, 75005, Paris, France
- CNRS, UTCBS UMR
8258, 75005 Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, UTCBS, 75006 Paris, France
| | - Abdulghani Ismail
- Chimie ParisTech,
PSL Research University, Unité de Technologies Chimiques et
Biologiques pour la Santé (UTCBS), 75005 Paris, France
- INSERM, UTCBS, 75005, Paris, France
- CNRS, UTCBS UMR
8258, 75005 Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, UTCBS, 75006 Paris, France
| | | | - Sophie Griveau
- Chimie ParisTech,
PSL Research University, Unité de Technologies Chimiques et
Biologiques pour la Santé (UTCBS), 75005 Paris, France
- INSERM, UTCBS, 75005, Paris, France
- CNRS, UTCBS UMR
8258, 75005 Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, UTCBS, 75006 Paris, France
| | | | - Fethi Bedioui
- Chimie ParisTech,
PSL Research University, Unité de Technologies Chimiques et
Biologiques pour la Santé (UTCBS), 75005 Paris, France
- INSERM, UTCBS, 75005, Paris, France
- CNRS, UTCBS UMR
8258, 75005 Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, UTCBS, 75006 Paris, France
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28
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de Souza GFP, Taladriz-Blanco P, Velloso LA, de Oliveira MG. Nitric oxide released from luminal s-nitroso-N-acetylcysteine increases gastric mucosal blood flow. Molecules 2015; 20:4109-23. [PMID: 25749680 PMCID: PMC6272716 DOI: 10.3390/molecules20034109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 02/18/2015] [Accepted: 02/26/2015] [Indexed: 12/25/2022] Open
Abstract
Nitric oxide (NO)-mediated vasodilation plays a key role in gastric mucosal defense, and NO-donor drugs may protect against diseases associated with gastric mucosal blood flow (GMBF) deficiencies. In this study, we used the ex vivo gastric chamber method and Laser Doppler Flowmetry to characterize the effects of luminal aqueous NO-donor drug S-nitroso-N-acetylcysteine (SNAC) solution administration compared to aqueous NaNO2 and NaNO3 solutions (pH 7.4) on GMBF in Sprague-Dawley rats. SNAC solutions (600 μM and 12 mM) led to a rapid threefold increase in GMBF, which was maintained during the incubation of the solutions with the gastric mucosa, while NaNO2 or NaNO3 solutions (12 mM) did not affect GMBF. SNAC solutions (600 μM and 12 mM) spontaneously released NO at 37 °C at a constant rate of 0.3 or 14 nmol·mL-1·min-1, respectively, while NaNO2 (12 mM) released NO at a rate of 0.06 nmol·mL-1·min-1 and NaNO3 (12 mM) did not release NO. These results suggest that the SNAC-induced GMBF increase is due to their higher rates of spontaneous NO release compared to equimolar NaNO2 solutions. Taken together, our data indicate that oral SNAC administration is a potential approach for gastric acid-peptic disorder prevention and treatment.
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Affiliation(s)
- Gabriela F P de Souza
- Institute of Chemistry, University of Campinas, UNICAMP, CP 6154, Campinas, SP 13083-970, Brazil.
| | - Patricia Taladriz-Blanco
- Institute of Chemistry, University of Campinas, UNICAMP, CP 6154, Campinas, SP 13083-970, Brazil.
| | - Lício A Velloso
- Faculty of Medical Sciences, University of Campinas, UNICAMP, CP, Campinas, SP 13084-970, Brazil.
| | - Marcelo G de Oliveira
- Institute of Chemistry, University of Campinas, UNICAMP, CP 6154, Campinas, SP 13083-970, Brazil.
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29
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Taladriz-Blanco P, de Oliveira MG. Enhanced photochemical nitric oxide release from a flutamide derivative incorporated in Pluronic F127 micelles. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.07.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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30
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Taladriz-Blanco P, Pérez-Juste J, Kandoth N, Hervés P, Sortino S. Layer-by-layer assembled gold nanoparticles with a tunable payload of a nitric oxide photocage. J Colloid Interface Sci 2013; 407:524-8. [DOI: 10.1016/j.jcis.2013.06.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/17/2013] [Accepted: 06/22/2013] [Indexed: 11/26/2022]
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31
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Taladriz-Blanco P, Pastoriza-Santos V, Pérez-Juste J, Hervés P. Controllable nitric oxide release in the presence of gold nanoparticles. Langmuir 2013; 29:8061-8069. [PMID: 23718250 DOI: 10.1021/la4014762] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A major problem associated with nitric oxide (NO) donors is the release of the desired amount of NO at a specific site. A number of platforms have been developed for the regulation of NO dosage. We present the use of citrate-stabilized gold nanoparticles as a platform to regulate NO release. Because of the affinity between gold and thiols, the characteristic -S-NO bond of S-nitrosothiols (RSNOs) breaks in the presence of gold nanoparticles, thereby releasing NO and modifying the gold nanoparticle surface with the corresponding thiol. This system allows for surface-controlled NO release, where the amount of NO released is proportional to the number of thiols bound to the gold nanoparticle surface. Moreover, by employing an amperometric technique to detect the maximum NO release, we were able to estimate the stoichiometry of the reaction, that is, the number of adsorbed RSNO molecules per gold nanoparticle. A kinetic model for NO release and its subsequent decomposition is proposed and used to fit the experimental results. The reaction was found to be zeroth- and first-order with respect to RSNO and gold nanoparticles, respectively.
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33
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Taladriz-Blanco P, Buurma NJ, Rodríguez-Lorenzo L, Pérez-Juste J, Liz-Marzán LM, Hervés P. Reversible assembly of metal nanoparticles induced by penicillamine. Dynamic formation of SERS hot spots. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm12175h] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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34
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Taladriz-Blanco P, Rodríguez-Lorenzo L, Sanles-Sobrido M, Hervés P, Correa-Duarte MA, Alvarez-Puebla RA, Liz-Marzán LM. SERS study of the controllable release of nitric oxide from aromatic nitrosothiols on bimetallic, bifunctional nanoparticles supported on carbon nanotubes. ACS Appl Mater Interfaces 2009; 1:56-59. [PMID: 20355754 DOI: 10.1021/am800141j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A hybrid system comprising bimetallic nanoparticles supported on carbon nanotubes (CNTs) was engineered to maximize the surface-enhanced Raman scattering signal from solution by generating a high density of hot spots with reproducible enhancing activity and long-term colloidal and optical stability. CNT@AgAu was employed as a bifunctional material to catalyze and monitor the controlled release of nitric oxide from aromatic nitrosothiols, as a function of the gold content.
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