1
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Chisanga M, Williams H, Boudreau D, Pelletier JN, Trottier S, Masson JF. Label-Free SERS for Rapid Differentiation of SARS-CoV-2-Induced Serum Metabolic Profiles in Non-Hospitalized Adults. Anal Chem 2023; 95:3638-3646. [PMID: 36763490 PMCID: PMC9940618 DOI: 10.1021/acs.analchem.2c04514] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
COVID-19 represents a multi-system infectious disease with broad-spectrum manifestations, including changes in host metabolic processes connected to the disease pathogenesis. Understanding biochemical dysregulation patterns as a consequence of COVID-19 illness promises to be crucial for tracking disease course and clinical outcomes. Surface-enhanced Raman scattering (SERS) has attracted considerable interest in biomedical diagnostics for the sensitive detection of intrinsic profiles of unique fingerprints of serum biomolecules indicative of SARS-CoV-2 infection in a label-free format. Here, we applied label-free SERS and chemometrics for rapid interrogation of temporal metabolic dynamics in longitudinal sera of mildly infected non-hospitalized patients (n = 22), at 4 and 16 weeks post PCR-positive diagnosis, and compared them with negative controls (n = 8). SERS spectral markers revealed distinct metabolic profiles in patient sera that significantly deviated from the healthy metabolic state at the two sampling time intervals. Multivariate and univariate analyses of the spectral data identified abundance dynamics in amino acids, lipids, and protein vibrations as the key spectral features underlying the metabolic differences detected in convalescent samples and perhaps associated with patient recovery progression. A validation study performed using spontaneous Raman spectroscopy yielded spectral data results that corroborated SERS spectral findings and confirmed the detected disease-specific molecular phenotypes in clinical samples. Label-free SERS promises to be a valuable analytical technique for rapid screening of the metabolic phenotype induced by SARS-CoV-2 infection to allow appropriate healthcare intervention.
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Affiliation(s)
- Malama Chisanga
- Department
of Chemistry, Québec Centre for Advanced Materials (QCAM),
Regroupement Québécois sur les Matériaux de Pointe
(RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau
et l’Apprentissage (CIRCA), Université
de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada
| | - Hannah Williams
- Department
of Chemistry, Québec Centre for Advanced Materials (QCAM),
Regroupement Québécois sur les Matériaux de Pointe
(RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau
et l’Apprentissage (CIRCA), Université
de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada
| | - Denis Boudreau
- Department
of Chemistry and Centre for Optics, Photonics and Lasers (COPL), Université Laval, 1045, av. de la Médecine, Québec, Québec G1V 0A6, Canada
| | - Joelle N. Pelletier
- Department
of Chemistry, Department of Biochemistry and PROTEO, Québec
Network for Research on Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada
| | - Sylvie Trottier
- Centre
de Recherche du Centre Hospitalier Universitaire de Québec
and Département de Microbiologie-Infectiologie et d’Immunologie, Université Laval, 2705, boulevard Laurier, Québec, Québec G1V 4G2, Canada
| | - Jean-Francois Masson
- Department
of Chemistry, Québec Centre for Advanced Materials (QCAM),
Regroupement Québécois sur les Matériaux de Pointe
(RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau
et l’Apprentissage (CIRCA), Université
de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada,. Phone: +1-514-343-7342
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2
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Djaïleb A, Lavallée É, Parker MF, Cayer MP, Desautels F, de Grandmont MJ, Stuible M, Gervais C, Durocher Y, Trottier S, Boudreau D, Masson JF, Brouard D, Pelletier JN. Assessment of the longitudinal humoral response in non-hospitalized SARS-CoV-2-positive individuals at decentralized sites: Outcomes and concordance. Front Immunol 2023; 13:1052424. [PMID: 36741379 PMCID: PMC9895839 DOI: 10.3389/fimmu.2022.1052424] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/13/2022] [Indexed: 01/22/2023] Open
Abstract
Introduction Early in the COVID-19 pandemic, reagent availability was not uniform, and infrastructure had to be urgently adapted to undertake COVID-19 surveillance. Methods Before the validation of centralized testing, two enzyme-linked immunosorbent assays (ELISA) were established independently at two decentralized sites using different reagents and instrumentation. We compared the results of these assays to assess the longitudinal humoral response of SARS-CoV-2-positive (i.e., PCR-confirmed), non-hospitalized individuals with mild to moderate symptoms, who had contracted SARSCoV-2 prior to the appearance of variants of concern in Québec, Canada. Results The two assays exhibited a high degree of concordance to identify seropositive individuals, thus validating the robustness of the methods. The results also confirmed that serum immunoglobulins persist ≥ 6 months post-infection among non-hospitalized adults and that the antibodies elicited by infection cross-reacted with the antigens from P.1 (Gamma) and B.1.617.2 (Delta) variants of concern. Discussion Together, these results demonstrate that immune surveillance assays can be rapidly and reliably established when centralized testing is not available or not yet validated, allowing for robust immune surveillance.
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Affiliation(s)
- Abdelhadi Djaïleb
- Département de Chimie, Université de Montréal, Montréal, QC, Canada
- PROTEO, Regroupement Québécois de Recherche sur la Fonction, l’Ingénierie et les Applications des Protéines, Québec, QC, Canada
- Centre en Chimie Verte et Catalyse, Université de Montréal, Montréal, QC, Canada
| | - Étienne Lavallée
- Département de Chimie, Université de Montréal, Montréal, QC, Canada
- PROTEO, Regroupement Québécois de Recherche sur la Fonction, l’Ingénierie et les Applications des Protéines, Québec, QC, Canada
- Centre en Chimie Verte et Catalyse, Université de Montréal, Montréal, QC, Canada
| | - Megan-Faye Parker
- PROTEO, Regroupement Québécois de Recherche sur la Fonction, l’Ingénierie et les Applications des Protéines, Québec, QC, Canada
- Centre en Chimie Verte et Catalyse, Université de Montréal, Montréal, QC, Canada
- Départment de Biochimie et Médecine Moléculaire, Université de Montréal, Montréal, QC, Canada
| | | | | | | | - Matthew Stuible
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Christian Gervais
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Yves Durocher
- PROTEO, Regroupement Québécois de Recherche sur la Fonction, l’Ingénierie et les Applications des Protéines, Québec, QC, Canada
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Sylvie Trottier
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Université Laval, Québec, QC, Canada
- Département de Microbiologie-Infectiologie et d’Immunologie, Université Laval, Québec, QC, Canada
| | - Denis Boudreau
- Départment de Chimie, Université Laval, Québec, QC, Canada
- Centre d’Optique, Photonique et Laser, Université Laval, Québec, QC, Canada
| | - Jean-Francois Masson
- Département de Chimie, Université de Montréal, Montréal, QC, Canada
- Centre Québécois sur les Matériaux Fonctionnels, Montréal, QC, Canada
- Centre Interdisciplinaire de Recherche sur le Cerveau et l’Apprentissage, Université de Montréal, Montréal, QC, Canada
| | - Danny Brouard
- Héma‐Québec, Affaires Médicales et Innovation, Québec, QC, Canada
| | - Joelle N. Pelletier
- Département de Chimie, Université de Montréal, Montréal, QC, Canada
- PROTEO, Regroupement Québécois de Recherche sur la Fonction, l’Ingénierie et les Applications des Protéines, Québec, QC, Canada
- Centre en Chimie Verte et Catalyse, Université de Montréal, Montréal, QC, Canada
- Départment de Biochimie et Médecine Moléculaire, Université de Montréal, Montréal, QC, Canada
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Fontaine N, Harter L, Marette A, Boudreau D. Acting as a Molecular Tailor: Dye Structural Modifications for Improved Sensitivity toward Lysophosphatidic Acids Sensing. ACS Omega 2023; 8:1067-1078. [PMID: 36643514 PMCID: PMC9835520 DOI: 10.1021/acsomega.2c06420] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Lysophosphatidic acids (LPA) are key biomarkers for several physiological processes, the monitoring of which can provide insights into the host's health. Common lab-based techniques for their detection are cumbersome, expensive, and necessitate specialized personnel to operate. LPA-sensitive fluorescent probes have been described, albeit for nonaqueous conditions, which impedes their use in biological matrices. In this paper, we explore in detail the influence of structure on the extent of aggregation-induced fluorescence quenching using specially synthesized styrylpyridinium dyes bearing structural adaptations to bestow them enhanced affinity toward LPA in aqueous media. Spectroscopic investigations supported by time-resolved fluorimetry revealed the contribution of excimer formation to the fluorescence quenching mechanism displayed by the fluorescent probes. Experimental observations of the influence of structure on detection sensitivity were supported by DFT calculations.
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Affiliation(s)
- Nicolas Fontaine
- Department
of Chemistry, Université Laval, 1045 avenue de la Médecine, Québec, CanadaG1V 0A6
- Center
for Optics, Photonics and Lasers, Université
Laval, 2375 rue de la
Terrasse, Québec, CanadaG1V 0A6
| | - Lara Harter
- Department
of Chemistry, Université Laval, 1045 avenue de la Médecine, Québec, CanadaG1V 0A6
- Center
for Optics, Photonics and Lasers, Université
Laval, 2375 rue de la
Terrasse, Québec, CanadaG1V 0A6
| | - André Marette
- Quebec
Heart and Lung Institute, Université
Laval, 2725, chemin Sainte-Foy, Québec, CanadaG1V 4G5
- Institute
of Nutrition and Functional Foods, Université
Laval, 2440, boulevard
Hochelaga, Québec, QC, CanadaG1V 0A6
| | - Denis Boudreau
- Department
of Chemistry, Université Laval, 1045 avenue de la Médecine, Québec, CanadaG1V 0A6
- Center
for Optics, Photonics and Lasers, Université
Laval, 2375 rue de la
Terrasse, Québec, CanadaG1V 0A6
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4
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Picard-Lafond A, Larivière D, Boudreau D. Metal-Enhanced Hg 2+-Responsive Fluorescent Nanoprobes: From Morphological Design to Application to Natural Waters. ACS Omega 2022; 7:22944-22955. [PMID: 35811854 PMCID: PMC9260771 DOI: 10.1021/acsomega.2c02985] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
Metal-enhanced fluorescence (MEF) is a powerful tool in the design of sensitive chemical sensors by improving brightness and photostability of target-responsive fluorophores. Compounding these advantages with the modest hardware requirements of fluorescence sensing compared to that of centralized elemental analysis instruments, thus expanding the use of MEF to the detection of low-level inorganic pollutants, is a compelling aspiration. Among the latter, monitoring mercury in the environment, where some of its species disseminate through the food chain and, in time, to humans, has elicited a broad research effort toward the development of Hg2+-responsive fluorescent sensors. Herein, a Hg2+-sensitive MEF-enabled probe was conceived by grafting a Hg2+-responsive fluorescein derivative to concentric Ag@SiO2 NPs, where the metallic core enhances fluorescence emission of molecular probes embedded in a surrounding silica shell. Time-resolved fluorescence measurements showed that the fluorophore's excited-state lifetime decreases from 3.9 ns in a solid, coreless silica sphere to 0.4 ns in the core-shell nanoprobe, granting the dye a better resistance to photobleaching. The Ag-core system showed a sizable improvement in the limit of detection at 2 nM (0.4 ppb) compared to 50 nM (10 ppb) in silica-only colloids, and its effectiveness for natural water analysis was demonstrated. Overall, the reported nanoarchitecture hints at the potential of MEF for heavy metal detection by fluorescence detection.
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Affiliation(s)
- Audrey Picard-Lafond
- Département
de chimie and Centre d’optique, photonique et laser
(COPL), Université Laval, Québec, QC G1V 0A6, Canada
| | - Dominic Larivière
- Département
de chimie and Centre d’optique, photonique et laser
(COPL), Université Laval, Québec, QC G1V 0A6, Canada
| | - Denis Boudreau
- Département
de chimie and Centre d’optique, photonique et laser
(COPL), Université Laval, Québec, QC G1V 0A6, Canada
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5
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Lebrun A, Fortin H, Fontaine N, Fillion D, Barbier O, Boudreau D. Pushing the Limits of Surface-Enhanced Raman Spectroscopy (SERS) with Deep Learning: Identification of Multiple Species with Closely Related Molecular Structures. Appl Spectrosc 2022; 76:609-619. [PMID: 35081756 PMCID: PMC9082968 DOI: 10.1177/00037028221077119] [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: 10/06/2021] [Accepted: 01/01/2022] [Indexed: 06/14/2023]
Abstract
Raman spectroscopy is a non-destructive and label-free molecular identification technique capable of producing highly specific spectra with various bands correlated to molecular structure. Moreover, the enhanced detection sensitivity offered by surface-enhanced Raman spectroscopy (SERS) allows analyzing mixtures of related chemical species in a relatively short measurement time. Combining SERS with deep learning algorithms allows in some cases to increase detection and classification capabilities even further. The present study evaluates the potential of applying deep learning algorithms to SERS spectroscopy to differentiate and classify different species of bile acids, a large family of molecules with low Raman cross sections and molecular structures that often differ by a single hydroxyl group. Moreover, the study of these molecules is of interest for the medical community since they have distinct pathological roles and are currently viewed as potential markers of gut microbiome imbalances. A convolutional neural network model was developed and used to classify SERS spectra from five bile acid species. The model succeeded in identifying the five analytes despite very similar molecular structures and was found to be reliable even at low analyte concentrations.
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Affiliation(s)
- Alexis Lebrun
- Departement of Chemistry, Université Laval, Québec, Canada
- Center for Optics, Photonics and Lasers (COPL), Université Laval, Québec, Canada
- Laboratoire de Pharmacologie Moléculaire, Axe Endocrinologie-Néphrologie, Centre de recherche du CHU de Québec, Université Laval, Quebec, Canada
| | - Hubert Fortin
- Departement of Chemistry, Université Laval, Québec, Canada
- Center for Optics, Photonics and Lasers (COPL), Université Laval, Québec, Canada
| | - Nicolas Fontaine
- Departement of Chemistry, Université Laval, Québec, Canada
- Center for Optics, Photonics and Lasers (COPL), Université Laval, Québec, Canada
| | - Daniel Fillion
- Departement of Chemistry, Université Laval, Québec, Canada
- Center for Optics, Photonics and Lasers (COPL), Université Laval, Québec, Canada
| | - Olivier Barbier
- Laboratoire de Pharmacologie Moléculaire, Axe Endocrinologie-Néphrologie, Centre de recherche du CHU de Québec, Université Laval, Quebec, Canada
| | - Denis Boudreau
- Departement of Chemistry, Université Laval, Québec, Canada
- Center for Optics, Photonics and Lasers (COPL), Université Laval, Québec, Canada
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6
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Hojjat Jodaylami M, Djaïleb A, Ricard P, Lavallée É, Cellier-Goetghebeur S, Parker MF, Coutu J, Stuible M, Gervais C, Durocher Y, Desautels F, Cayer MP, de Grandmont MJ, Rochette S, Brouard D, Trottier S, Boudreau D, Pelletier JN, Masson JF. Author Correction: Cross-reactivity of antibodies from non-hospitalized COVID-19 positive individuals against the native, B.1.351, B.1.617.2, and P.1 SARS-CoV-2 spike proteins. Sci Rep 2021; 11:22912. [PMID: 34799675 PMCID: PMC8602984 DOI: 10.1038/s41598-021-02484-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Maryam Hojjat Jodaylami
- Department of Chemistry, Québec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Abdelhadi Djaïleb
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Pierre Ricard
- Department of Chemistry, Québec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Étienne Lavallée
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Stella Cellier-Goetghebeur
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Megan-Faye Parker
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Julien Coutu
- Department of Chemistry, Québec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Matthew Stuible
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Christian Gervais
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Yves Durocher
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Florence Desautels
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Marie-Pierre Cayer
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Marie Joëlle de Grandmont
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Samuel Rochette
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Danny Brouard
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Sylvie Trottier
- Centre de recherche du Centre hospitalier universitaire de Québec and Département de microbiologie-infectiologie et d'immunologie, Université Laval, 2705, boulevard Laurier, Québec, QC, G1V 4G2, Canada
| | - Denis Boudreau
- Department of Chemistry and Centre for Optics, Photonics and Lasers (COPL), Université Laval, 1045, av. de la Médecine, Québec, QC, G1V 0A6, Canada
| | - Joelle N Pelletier
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada.
| | - Jean-Francois Masson
- Department of Chemistry, Québec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada.
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7
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Hojjat Jodaylami M, Djaïleb A, Ricard P, Lavallée É, Cellier-Goetghebeur S, Parker MF, Coutu J, Stuible M, Gervais C, Durocher Y, Desautels F, Cayer MP, de Grandmont MJ, Rochette S, Brouard D, Trottier S, Boudreau D, Pelletier JN, Masson JF. Cross-reactivity of antibodies from non-hospitalized COVID-19 positive individuals against the native, B.1.351, B.1.617.2, and P.1 SARS-CoV-2 spike proteins. Sci Rep 2021; 11:21601. [PMID: 34750399 PMCID: PMC8575961 DOI: 10.1038/s41598-021-00844-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 10/19/2021] [Indexed: 12/20/2022] Open
Abstract
SARS-CoV-2 variants of concern (VOCs) have emerged worldwide, with implications on the spread of the pandemic. Characterizing the cross-reactivity of antibodies against these VOCs is necessary to understand the humoral response of non-hospitalized individuals previously infected with SARS-CoV-2, a population that remains understudied. Thirty-two SARS-CoV-2-positive (PCR-confirmed) and non-hospitalized Canadian adults were enrolled 14-21 days post-diagnosis in 2020, before the emergence of the B.1.351 (also known as Beta), B.1.617.2 (Delta) and P.1 (Gamma) VOCs. Sera were collected 4 and 16 weeks post-diagnosis. Antibody levels and pseudo-neutralization of the ectodomain of SARS-CoV-2 spike protein/human ACE-2 receptor interaction were analyzed with native, B.1.351, B.1.617.2 and P.1 variant spike proteins. Despite a lower response observed for the variant spike proteins, we report evidence of a sustained humoral response against native, B.1.351, B.1.617.2 and P.1 variant spike proteins among non-hospitalized Canadian adults. Furthermore, this response inhibited the interaction between the spike proteins from the different VOCs and ACE-2 receptor for ≥ 16 weeks post-diagnosis, except for individuals aged 18-49 years who showed no inhibition of the interaction between B.1.617.1 or B.1.617.2 spike and ACE-2. Interestingly, the affinity (KD) measured between the spike proteins (native, B.1.351, B.1.617.2 and P.1) and antibodies elicited in sera of infected and vaccinated (BNT162b2 and ChAdOx1 nCoV-19) individuals was invariant. Relative to sera from vaccine-naïve (and previously infected) individuals, sera from vaccinated individuals had higher antibody levels (as measured with label-free SPR) and more efficiently inhibited the spike-ACE-2 interactions, even among individuals aged 18-49 years, showing the effectiveness of vaccination.
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Affiliation(s)
- Maryam Hojjat Jodaylami
- Department of Chemistry, Québec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Abdelhadi Djaïleb
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Pierre Ricard
- Department of Chemistry, Québec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Étienne Lavallée
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Stella Cellier-Goetghebeur
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Megan-Faye Parker
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Julien Coutu
- Department of Chemistry, Québec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Matthew Stuible
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Christian Gervais
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Yves Durocher
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Florence Desautels
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Marie-Pierre Cayer
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Marie Joëlle de Grandmont
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Samuel Rochette
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Danny Brouard
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec, QC, G1V 5C3, Canada
| | - Sylvie Trottier
- Centre de recherche du Centre hospitalier universitaire de Québec and Département de microbiologie-infectiologie et d'immunologie, Université Laval, 2705, boulevard Laurier, Québec, QC, G1V 4G2, Canada
| | - Denis Boudreau
- Department of Chemistry and Centre for Optics, Photonics and Lasers (COPL), Université Laval, 1045, av. de la Médecine, Québec, QC, G1V 0A6, Canada
| | - Joelle N Pelletier
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research On Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada.
| | - Jean-Francois Masson
- Department of Chemistry, Québec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre Interdisciplinaire de Recherche sur le Cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada.
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8
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Lamarre M, Tremblay T, Bansept MA, Robitaille K, Fradet V, Giguère D, Boudreau D. A glycan-based plasmonic sensor for prostate cancer diagnosis. Analyst 2021; 146:6852-6860. [PMID: 34623365 DOI: 10.1039/d1an00789k] [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: 11/21/2022]
Abstract
Prostate cancer affects thousands of men who undergo clinical screening tests every year. The main biomarker used for the diagnosis of prostate cancer, prostate specific antigen (PSA), presents limitations that justify investigating new biomarkers to improve reliability. Antibodies against the tumor-associated carbohydrate antigen (Tn), or TACA, develop early in carcinogenesis, making them an interesting alternative as a target for prostate cancer diagnostics. In this work, the Tn antigen was synthesized and immobilized on a surface plasmon resonance sensor coated with a polydopamine/polyethylene oxide mixed layer used both as an anchoring surface for Tn capture moieties and to minimize surface fouling. The sensor could be regenerated and reused at least 60 times without any significant loss in sensitivity. Anti-Tn antibodies were detected in the 0-10 nM concentration range with detection limits of 0.1 and 0.3 nM in spiked buffer solutions and diluted human blood serum samples, respectively. Finally, as a proof-of-concept, this carbohydrate-based sensor was used to successfully discriminate blood serum samples from prostate cancer-free and prostate cancer patients.
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Affiliation(s)
- Mathieu Lamarre
- Department of Chemistry, Université Laval, Québec, QC, Canada. .,Center for Optics, Photonics and Lasers (COPL), Université Laval, Québec, QC, Canada
| | - Thomas Tremblay
- Department of Chemistry, Université Laval, Québec, QC, Canada.
| | - Marc-Antoine Bansept
- Department of Chemistry, Université Laval, Québec, QC, Canada. .,Center for Optics, Photonics and Lasers (COPL), Université Laval, Québec, QC, Canada
| | - Karine Robitaille
- Centre Hospitalier Universitaire (CHU) de Québec-Université Laval Research Centre, Oncology Division, Quebec, QC, Canada
| | - Vincent Fradet
- Centre Hospitalier Universitaire (CHU) de Québec-Université Laval Research Centre, Oncology Division, Quebec, QC, Canada.,Faculty of Medicine, Department of Surgery, Université Laval, Québec, QC, Canada.,Institute of nutrition and functional foods (INAF) and NUTRISS Center - Nutrition, health and society of Université Laval, Québec, QC, Canada
| | - Denis Giguère
- Department of Chemistry, Université Laval, Québec, QC, Canada.
| | - Denis Boudreau
- Department of Chemistry, Université Laval, Québec, QC, Canada. .,Center for Optics, Photonics and Lasers (COPL), Université Laval, Québec, QC, Canada
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9
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Djaileb A, Hojjat Jodaylami M, Coutu J, Ricard P, Lamarre M, Rochet L, Cellier-Goetghebeur S, Macaulay D, Charron B, Lavallée É, Thibault V, Stevenson K, Forest S, Live LS, Abonnenc N, Guedon A, Quessy P, Lemay JF, Farnós O, Kamen A, Stuible M, Gervais C, Durocher Y, Cholette F, Mesa C, Kim J, Cayer MP, de Grandmont MJ, Brouard D, Trottier S, Boudreau D, Pelletier JN, Masson JF. Cross-validation of ELISA and a portable surface plasmon resonance instrument for IgG antibody serology with SARS-CoV-2 positive individuals. Analyst 2021; 146:4905-4917. [PMID: 34250530 DOI: 10.1039/d1an00893e] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report on the development of surface plasmon resonance (SPR) sensors and matching ELISAs for the detection of nucleocapsid and spike antibodies specific against the novel coronavirus 2019 (SARS-CoV-2) in human serum, plasma and dried blood spots (DBS). When exposed to SARS-CoV-2 or a vaccine against SARS-CoV-2, the immune system responds by expressing antibodies at levels that can be detected and monitored to identify the fraction of the population potentially immunized against SARS-CoV-2 and support efforts to deploy a vaccine strategically. A SPR sensor coated with a peptide monolayer and functionalized with various sources of SARS-CoV-2 recombinant proteins expressed in different cell lines detected human anti-SARS-CoV-2 IgG antibodies in clinical samples. Nucleocapsid expressed in different cell lines did not significantly change the sensitivity of the assays, whereas the use of a CHO cell line to express spike ectodomain led to excellent performance. This bioassay was performed on a portable SPR instrument capable of measuring 4 biological samples within 30 minutes of sample/sensor contact and the chip could be regenerated at least 9 times. Multi-site validation was then performed with in-house and commercial ELISA, which revealed excellent cross-correlations with Pearson's coefficients exceeding 0.85 in all cases, for measurements in DBS and plasma. This strategy paves the way to point-of-care and rapid testing for antibodies in the context of viral infection and vaccine efficacy monitoring.
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Affiliation(s)
- Abdelhadi Djaileb
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada. and Affinité Instruments, 1250 rue Guy, Suite 600, Montréal, Québec H3H 2L3, Canada
| | - Maryam Hojjat Jodaylami
- Department of Chemistry, Quebec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Julien Coutu
- Department of Chemistry, Quebec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Pierre Ricard
- Department of Chemistry, Quebec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Mathieu Lamarre
- Department of Chemistry and Centre for Optics, Photonics and Lasers (COPL), Université Laval, 1045, av. de la Médecine, Québec City, Québec G1V 0A6, Canada
| | - Léa Rochet
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Stella Cellier-Goetghebeur
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Devin Macaulay
- Department of Chemistry and Centre for Optics, Photonics and Lasers (COPL), Université Laval, 1045, av. de la Médecine, Québec City, Québec G1V 0A6, Canada
| | - Benjamin Charron
- Department of Chemistry, Quebec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Étienne Lavallée
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Vincent Thibault
- Department of Chemistry, Quebec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Keisean Stevenson
- Department of Chemistry, Quebec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Simon Forest
- Department of Chemistry, Quebec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Ludovic S Live
- Affinité Instruments, 1250 rue Guy, Suite 600, Montréal, Québec H3H 2L3, Canada
| | - Nanouk Abonnenc
- CNETE and PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Cégep de Shawinigan, 2263 Avenue du Collège, Shawinigan, Québec G9N 6 V8, Canada
| | - Anthony Guedon
- CNETE and PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Cégep de Shawinigan, 2263 Avenue du Collège, Shawinigan, Québec G9N 6 V8, Canada
| | - Patrik Quessy
- CNETE and PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Cégep de Shawinigan, 2263 Avenue du Collège, Shawinigan, Québec G9N 6 V8, Canada
| | - Jean-François Lemay
- CNETE and PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Cégep de Shawinigan, 2263 Avenue du Collège, Shawinigan, Québec G9N 6 V8, Canada
| | - Omar Farnós
- Department of Bioengineering, McGill University McConnell Engineering Building, 3480 University Street, Montreal, Québec H3A 0E9, Canada
| | - Amine Kamen
- Department of Bioengineering, McGill University McConnell Engineering Building, 3480 University Street, Montreal, Québec H3A 0E9, Canada
| | - Matthew Stuible
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, Québec, Canada
| | - Christian Gervais
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, Québec, Canada
| | - Yves Durocher
- Mammalian Cell Expression, Human Health Therapeutics Research Centre, National Research Council Canada, Montréal, Québec, Canada
| | - François Cholette
- National Laboratory for HIV Reference Services, National Microbiology Laboratory at the JC Wilt Infectious Diseases Research Centre, Public Health Agency of Canada, Winnipeg, Canada and Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Canada
| | - Christine Mesa
- National Laboratory for HIV Reference Services, National Microbiology Laboratory at the JC Wilt Infectious Diseases Research Centre, Public Health Agency of Canada, Winnipeg, Canada
| | - John Kim
- National Laboratory for HIV Reference Services, National Microbiology Laboratory at the JC Wilt Infectious Diseases Research Centre, Public Health Agency of Canada, Winnipeg, Canada
| | - Marie-Pierre Cayer
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec City, G1V 5C3, Québec, Canada
| | - Marie-Joëlle de Grandmont
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec City, G1V 5C3, Québec, Canada
| | - Danny Brouard
- Héma-Québec, Affaires médicales et innovation, 1070, avenue des Sciences-de-la-Vie, Québec City, G1V 5C3, Québec, Canada
| | - Sylvie Trottier
- Centre de recherche du Centre hospitalier universitaire de Québec and Département de microbiologie-infectiologie et d'immunologie, Université Laval 2705, boulevard Laurier, Québec City, Québec, Canada G1V 4G2
| | - Denis Boudreau
- Department of Chemistry and Centre for Optics, Photonics and Lasers (COPL), Université Laval, 1045, av. de la Médecine, Québec City, Québec G1V 0A6, Canada
| | - Joelle N Pelletier
- Department of Chemistry, Department of Biochemistry and PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
| | - Jean-Francois Masson
- Department of Chemistry, Quebec Centre for Advanced Materials (QCAM), Regroupement Québécois sur les Matériaux de Pointe (RQMP), and Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, Québec H3C 3J7, Canada.
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10
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Boissinot K, Peytavi R, Chapdelaine S, Geissler M, Boissinot M, Martel EA, Béliveau-Viel D, Gravel JF, Malic L, Veres T, Boudreau D, Bergeron MG. Real-time monitoring of bead-based DNA hybridization in a microfluidic system: study of amplicon hybridization behavior on solid supports. Analyst 2021; 146:4226-4234. [PMID: 34095908 DOI: 10.1039/d1an00394a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DNA hybridization phenomena occurring on solid supports are not understood as clearly as aqueous phase hybridizations and mathematical models cannot predict some empirically obtained results. Ongoing research has identified important parameters but remains incomplete to accurately account for all interactions. It has previously been shown that the length of the overhanging (dangling) end of the target DNA strand following hybridization to the capture probe is correlated to interactions with the complementary strand in solution which can result in unbinding of the target and its release from the surface. We have developed an instrument for real-time monitoring of DNA hybridization on spherical particles functionalized with oligonucleotide capture probes and arranged in the form of a tightly packed monolayer bead bed inside a microfluidic cartridge. The instrument is equipped with a pneumatic module to mediate displacement of fluid on the cartridge. We compared this system to both conventional (passive) and centrifugally-driven (active) microfluidic microarray hybridization on glass slides to establish performance levels for the detection of single nucleotide polymorphisms. The system was also used to study the effect of the dangling end's length in real-time when the immobilized target DNA is exposed to the complementary strand in solution. Our findings indicate that increasing the length of the dangling end leads to desorption of target amplicons from bead-bound capture probes at a rate approaching that of the initial hybridization process. Finally, bead bed hybridization was performed with Streptococcus agalactiae cfb gene amplicons obtained from randomized clinical samples, which allowed for identification of group B streptococci within 5-15 min. The methodology presented here is useful for investigating competitive hybridization mechanisms on solid supports and to rapidly validate the suitability of microarray capture probes.
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Affiliation(s)
- Karel Boissinot
- Centre de recherche en infectiologie de l'Université Laval, Axe Maladies infectieuses et immunitaires, Centre de recherche du CHU de Québec-Université Laval, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada. and Département de microbiologie-infectiologie et immunologie, Faculté de médecine, Université Laval, 1050 avenue de la Médecine, Québec, QC G1V 0A6, Canada
| | - Régis Peytavi
- Centre de recherche en infectiologie de l'Université Laval, Axe Maladies infectieuses et immunitaires, Centre de recherche du CHU de Québec-Université Laval, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada. and Département de microbiologie-infectiologie et immunologie, Faculté de médecine, Université Laval, 1050 avenue de la Médecine, Québec, QC G1V 0A6, Canada
| | - Sébastien Chapdelaine
- Centre d'optique, photonique et laser (COPL), Université Laval, 2375 rue de la Terrasse, Québec, QC G1V 0A6, Canada
| | - Matthias Geissler
- Life Sciences Division, National Research Council of Canada, 75 boulevard de Mortagne, Boucherville, QC J4B 6Y4, Canada.
| | - Maurice Boissinot
- Centre de recherche en infectiologie de l'Université Laval, Axe Maladies infectieuses et immunitaires, Centre de recherche du CHU de Québec-Université Laval, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada.
| | - Eric A Martel
- Centre de recherche en infectiologie de l'Université Laval, Axe Maladies infectieuses et immunitaires, Centre de recherche du CHU de Québec-Université Laval, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada.
| | - David Béliveau-Viel
- Centre d'optique, photonique et laser (COPL), Université Laval, 2375 rue de la Terrasse, Québec, QC G1V 0A6, Canada
| | - Jean-François Gravel
- Centre d'optique, photonique et laser (COPL), Université Laval, 2375 rue de la Terrasse, Québec, QC G1V 0A6, Canada
| | - Lidija Malic
- Life Sciences Division, National Research Council of Canada, 75 boulevard de Mortagne, Boucherville, QC J4B 6Y4, Canada.
| | - Teodor Veres
- Life Sciences Division, National Research Council of Canada, 75 boulevard de Mortagne, Boucherville, QC J4B 6Y4, Canada.
| | - Denis Boudreau
- Centre d'optique, photonique et laser (COPL), Université Laval, 2375 rue de la Terrasse, Québec, QC G1V 0A6, Canada and Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC G1V 0A6, Canada
| | - Michel G Bergeron
- Centre de recherche en infectiologie de l'Université Laval, Axe Maladies infectieuses et immunitaires, Centre de recherche du CHU de Québec-Université Laval, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada. and Département de microbiologie-infectiologie et immunologie, Faculté de médecine, Université Laval, 1050 avenue de la Médecine, Québec, QC G1V 0A6, Canada
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11
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Fontaine N, Picard-Lafond A, Asselin J, Boudreau D. Thinking outside the shell: novel sensors designed from plasmon-enhanced fluorescent concentric nanoparticles. Analyst 2020; 145:5965-5980. [PMID: 32815925 DOI: 10.1039/d0an01092h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The alteration of photophysical properties of fluorophores in the vicinity of a metallic nanostructure, a phenomenon termed plasmon- or metal-enhanced fluorescence (MEF), has been investigated extensively and used in a variety of proof-of-concept demonstrations over the years. A particularly active area of development in this regard has been the design of nanostructures where fluorophore and metallic core are held in a stable geometry that imparts improved luminosity and photostability to a plethora of organic fluorophores. This minireview presents an overview of MEF-based concentric core-shell sensors developed in the past few years. These architectures expand the range of applications of nanoparticles (NPs) beyond the uses possible with fluorescent molecules. Design aspects that are being described include the influence of the nanocomposite structure on MEF, notably the dependence of fluorescence intensity and lifetime on the distance to the plasmonic core. The chemical composition of nanocomposites as a design feature is also discussed, taking as an example the use of non-noble plasmonic metals such as indium as core materials to enhance multiple fluorophores throughout the UV-Vis range and tune the sensitivity of halide-sensing fluorophores operating on the principle of collisional quenching. Finally, the paper describes how various solid substrates can be functionalized with MEF-based nanosensors to bestow them with intense and photostable pH-sensitive properties for use in fields such as medical therapy and diagnostics, dentistry, biochemistry and microfluidics.
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Affiliation(s)
- Nicolas Fontaine
- Department of Chemistry, Université Laval, 1045 avenue de la Médecine, Québec, CanadaG1V 0A6.
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12
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Darwish GH, Asselin J, Tran MV, Gupta R, Kim H, Boudreau D, Algar WR. Fully Self-Assembled Silica Nanoparticle-Semiconductor Quantum Dot Supra-Nanoparticles and Immunoconjugates for Enhanced Cellular Imaging by Microscopy and Smartphone Camera. ACS Appl Mater Interfaces 2020; 12:33530-33540. [PMID: 32672938 DOI: 10.1021/acsami.0c09553] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 05/17/2023]
Abstract
There is a growing need for brighter luminescent materials to improve the detection and imaging of biomarkers. Relevant contexts include low-abundance biomarkers and technology-limited applications, where an example of the latter is the emerging use of smartphones and other nonoptimal but low-cost and portable devices for point-of-care diagnostics. One approach to achieving brighter luminescent materials is incorporating multiple copies of a luminescent material into a larger supra-nanoparticle (supra-NP) assembly. Here, we present a facile method for the preparation and immunoconjugation of supra-NP assemblies (SiO2@QDs) that comprised many quantum dots (QDs) around a central silica nanoparticle (SiO2 NP). The assembly was entirely driven by spontaneous affinity interactions between the constituent materials, which included imidazoline-functionalized silica nanoparticles, ligand-coated QDs, imidazole-functionalized dextran, and tetrameric antibody complexes (TACs). The physical and optical properties of the SiO2@QDs were characterized at both the ensemble and single-particle levels. Notably, the optical properties of the QDs were preserved upon assembly into supra-NPs, and single SiO2@QDs were approximately an order of magnitude brighter than single QDs and nonblinking. In proof-of-concept applications, including selective immunolabeling of breast cancer cells, the SiO2@QDs provided higher sensitivity and superior signal-to-background ratios whether using research-grade fluorescence microscopy or smartphone-based imaging. Overall, the SiO2@QDs are promising materials for enhanced bioanalysis and imaging.
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Affiliation(s)
- Ghinwa H Darwish
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Jérémie Asselin
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
- Département de chimie et Centre d'optique, photonique et laser (COPL), Université Laval, Québec G1V 0A6, Canada
| | - Michael V Tran
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Rupsa Gupta
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Hyungki Kim
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Denis Boudreau
- Département de chimie et Centre d'optique, photonique et laser (COPL), Université Laval, Québec G1V 0A6, Canada
| | - W Russ Algar
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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13
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Picard-Lafond A, Larivière D, Boudreau D. Revealing the Hydrolysis Mechanism of a Hg 2+-Reactive Fluorescein Probe: Novel Insights on Thionocarbonated Dyes. ACS Omega 2020; 5:701-711. [PMID: 31956820 PMCID: PMC6964290 DOI: 10.1021/acsomega.9b03333] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 12/17/2019] [Indexed: 06/10/2023]
Abstract
As one of the most toxic metal pollutants, mercury is the subject of extensive research to improve current detection strategies, notably to develop sensitive, selective, fast, and affordable Hg2+-responsive fluorescent probes. Comprehending the sensing mechanism of these molecules is a crucial step in their design and optimization of their performance. Herein, a new fluorescein-based thionocarbonate-appended Hg2+-sensitive probe was synthesized to study the hydrolysis reactions involved in the sensing process. Autohydrolysis was revealed as a significant component of the signal generation mechanism, occurring concurrently with Hg2+-catalyzed hydrolysis. This knowledge was used to investigate the effects of key experimental conditions (pH, temperature, chloride ions) on sensing efficiency. Overall, the chemical and physical properties of this new thionocarbonated dye and the insights into its sensing mechanism will be instrumental in designing reliable and effective portable sensing strategies for mercury and other heavy metals.
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Affiliation(s)
- Audrey Picard-Lafond
- Département
de chimie and Centre d’optique, photonique et laser
(COPL), Université Laval, Québec, Quebec G1V 0A6, Canada
| | - Dominic Larivière
- Département
de chimie and Centre d’optique, photonique et laser
(COPL), Université Laval, Québec, Quebec G1V 0A6, Canada
| | - Denis Boudreau
- Département
de chimie and Centre d’optique, photonique et laser
(COPL), Université Laval, Québec, Quebec G1V 0A6, Canada
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14
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Dinel M, Tartaggia S, Wallace GQ, Boudreau D, Masson J, Polo F. The Fundamentals of Real‐Time Surface Plasmon Resonance/Electrogenerated Chemiluminescence. Angew Chem Int Ed Engl 2019; 58:18202-18206. [DOI: 10.1002/anie.201909806] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/30/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Marie‐Pier Dinel
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Stefano Tartaggia
- Farmacologia Sperimentale e ClinicaIRCCS Centro di Riferimento Oncologico Via Franco Gallini 2 33081 Aviano Italy
| | - Gregory Q. Wallace
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Denis Boudreau
- Department of Chemistry and Centre for Optics, Photonics and Lasers (COPL)Université Laval 1045, av. de la Médecine Québec Qc G1V 0A6 Canada
| | - Jean‐Francois Masson
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Federico Polo
- Department of Molecular Sciences and NanosystemsCa' Foscari University of Venice Via Torino 155B 30172 Venezia Italy
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15
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Dinel M, Tartaggia S, Wallace GQ, Boudreau D, Masson J, Polo F. The Fundamentals of Real‐Time Surface Plasmon Resonance/Electrogenerated Chemiluminescence. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909806] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Marie‐Pier Dinel
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Stefano Tartaggia
- Farmacologia Sperimentale e ClinicaIRCCS Centro di Riferimento Oncologico Via Franco Gallini 2 33081 Aviano Italy
| | - Gregory Q. Wallace
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Denis Boudreau
- Department of Chemistry and Centre for Optics, Photonics and Lasers (COPL)Université Laval 1045, av. de la Médecine Québec Qc G1V 0A6 Canada
| | - Jean‐Francois Masson
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Federico Polo
- Department of Molecular Sciences and NanosystemsCa' Foscari University of Venice Via Torino 155B 30172 Venezia Italy
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16
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R. Daniel J, McCarthy LA, Ringe E, Boudreau D. Enhanced control of plasmonic properties of silver–gold hollow nanoparticles via a reduction-assisted galvanic replacement approach. RSC Adv 2019; 9:389-396. [PMID: 35521593 PMCID: PMC9059334 DOI: 10.1039/c8ra09364d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 12/18/2018] [Indexed: 12/29/2022] Open
Abstract
Hollow noble metal nanoparticles are of growing interest due to their localized surface plasmon resonance (LSPR) tunability. A popular synthetic approach is galvanic replacement which can be coupled with a co-reducer. Here, we describe the control over morphology, and therefore over plasmonic properties including energy, bandwidth, extinction and scattering intensity, offered by co-reduction galvanic replacement. This study indicates that whereas the variation of atomic stoichiometry using the co-reduction method described in this work offers a rather modest tuning range of LSPR energy when compared to traditional galvanic replacement, it nevertheless has a profound effect on shell thickness, which imparts a degree of control over scattering intensity and sensitivity to changes in the dielectric constant of the surrounding environment. Therefore, in this context particle size and gold content become two design parameters that can be used to independently tune LSPR energy and intensity. A co-reduction assisted method for the synthesis of Ag–Au hollow nanoparticles with enhanced control over plasmon wavelength and scattering intensity.![]()
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Affiliation(s)
- Josée R. Daniel
- Département de Chimie et Centre D'optique, Photonique et Laser (COPL)
- Université Laval
- Canada
| | | | - Emilie Ringe
- Department of Chemistry
- Rice University
- Houston
- USA
- Department of Materials Science and Metallurgy
| | - Denis Boudreau
- Département de Chimie et Centre D'optique, Photonique et Laser (COPL)
- Université Laval
- Canada
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17
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Nigoghossian K, Messaddeq Y, Boudreau D, Ribeiro SJL. UV and Temperature-Sensing Based on NaGdF 4:Yb 3+:Er 3+@SiO 2-Eu(tta) 3. ACS Omega 2017; 2:2065-2071. [PMID: 31457560 PMCID: PMC6641124 DOI: 10.1021/acsomega.7b00056] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 05/03/2017] [Indexed: 06/10/2023]
Abstract
A multifunctional nanosystem was synthesized to be used as a dual sensor of UV light and temperature. NaGdF4:Yb3+:Er3+ upconverting nanoparticles (UCNPs) were synthesized and coated with a silica shell to which a europium(III) complex was incorporated. The synthesis of NaGdF4 UCNPs was performed via thermal decomposition of lanthanide ion fluoride precursors in the presence of oleic acid. To achieve sufficient water dispersibility, the surface of the hydrophobic oleate-capped UCNPs in the hexagonal phase was modified by a silica coating through a modified Stöber process through a reverse microemulsion method. An Eu(tta)3 (tta: thenoyltrifluoroacetonate) complex was prepared in situ at the silica shell. A dual-mode nanothermometer was obtained from a near infrared to visible upconversion fluorescence signal of Er3+ ions together with UV-excited downshifting emission from the Eu3+ complex. Measurements were recorded near the physiological temperature range (293-323 K), revealing excellent linearity (R 2 > 0.99) and relatively high thermal sensitivities (≥1.5%·K-1). The Eu(tta)3 complex present in the silica shell was tested as the UV sensor because of the Eu3+ luminescence dependence on UV-light exposure time.
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Affiliation(s)
- Karina Nigoghossian
- Laboratory
of Photonic Materials, Institute of Chemistry, São Paulo State University, UNESP, CP 355, Araraquara, São Paulo 14801-970 Brazil
- Centre d’optique, photonique
et laser and Department of Chemistry, Université
Laval, Québec, Québec G1V 0A6, Canada
| | - Younès Messaddeq
- Laboratory
of Photonic Materials, Institute of Chemistry, São Paulo State University, UNESP, CP 355, Araraquara, São Paulo 14801-970 Brazil
- Centre d’optique, photonique
et laser and Department of Chemistry, Université
Laval, Québec, Québec G1V 0A6, Canada
| | - Denis Boudreau
- Centre d’optique, photonique
et laser and Department of Chemistry, Université
Laval, Québec, Québec G1V 0A6, Canada
| | - Sidney J. L. Ribeiro
- Laboratory
of Photonic Materials, Institute of Chemistry, São Paulo State University, UNESP, CP 355, Araraquara, São Paulo 14801-970 Brazil
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18
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Gontero D, Lessard-Viger M, Brouard D, Bracamonte AG, Boudreau D, Veglia AV. Smart multifunctional nanoparticles design as sensors and drug delivery systems based on supramolecular chemistry. Microchem J 2017. [DOI: 10.1016/j.microc.2016.10.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Gontero D, Veglia AV, Bracamonte AG, Boudreau D. Synthesis of ultraluminescent gold core–shell nanoparticles as nanoimaging platforms for biosensing applications based on metal-enhanced fluorescence. RSC Adv 2017. [DOI: 10.1039/c6ra27649k] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Core–shell nanoparticles are versatile nanostructures that can be applied as luminescent biosensing platforms in many nanotechnological developments.
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Affiliation(s)
- D. Gontero
- Laboratorio de Análisis Clínicos y Bacteriológicos
- Clínica de la Familia II
- Río Tercero
- Argentina
| | - A. V. Veglia
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC)
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - A. G. Bracamonte
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC)
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - D. Boudreau
- Departement de chimie and Centre d'optique
- photonique et laser (COPL)
- Université Laval
- Québec (QC)
- Canada
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20
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Nigoghossian K, Ouellet S, Plain J, Messaddeq Y, Boudreau D, Ribeiro SJL. Upconversion nanoparticle-decorated gold nanoshells for near-infrared induced heating and thermometry. J Mater Chem B 2017; 5:7109-7117. [DOI: 10.1039/c7tb01621b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [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 present work involves the design of a multifunctional system based on gold nanoshells (AuNSs) decorated with lanthanide-based upconversion nanoparticles (UCNPs) intended as an optical heater and temperature probe at the nanoscale.
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Affiliation(s)
- K. Nigoghossian
- Laboratory of Photonic Materials
- Institute of Chemistry
- São Paulo State University
- UNESP
- CP 355
| | - S. Ouellet
- Centre d'optique
- Photonique et Laser
- Université Laval
- Québec
- Canada
| | - J. Plain
- Laboratoire de Nanotechnologie et d'Instrumentation Optique
- Université de Technologie de Troyes
- Institut Charles Delaunay
- Troyes
- France
| | - Y. Messaddeq
- Laboratory of Photonic Materials
- Institute of Chemistry
- São Paulo State University
- UNESP
- CP 355
| | - D. Boudreau
- Centre d'optique
- Photonique et Laser
- Université Laval
- Québec
- Canada
| | - S. J. L. Ribeiro
- Laboratory of Photonic Materials
- Institute of Chemistry
- São Paulo State University
- UNESP
- CP 355
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21
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Asselin J, Lambert MP, Fontaine N, Boudreau D. A ratiometric nanoarchitecture for the simultaneous detection of pH and halide ions using UV plasmon-enhanced fluorescence. Chem Commun (Camb) 2017; 53:755-758. [DOI: 10.1039/c6cc08693d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this work, we designed a ratiometric core–shell nanoarchitecture composed of an indium UV plasmonic core, an internal reference (rhodamine B), a pH-sensitive probe (fluorescein), and a halide ion sensor (6-methoxyquinolinium).
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Affiliation(s)
- Jérémie Asselin
- Département de Chimie et Centre d'optique Photonique et Laser (COPL)
- Université Laval
- Canada
| | - Marie-Pier Lambert
- Département de Chimie et Centre d'optique Photonique et Laser (COPL)
- Université Laval
- Canada
| | - Nicolas Fontaine
- Département de Chimie et Centre d'optique Photonique et Laser (COPL)
- Université Laval
- Canada
| | - Denis Boudreau
- Département de Chimie et Centre d'optique Photonique et Laser (COPL)
- Université Laval
- Canada
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22
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Abstract
The internal structure of hollow AgAu nanorods created by partial galvanic replacement was manipulated reversibly, and its effect on optical properties was mapped with nanometer resolution. Using the electron beam in a scanning transmission electron microscope to create solvated electrons and reactive radicals in an encapsulated solution-filled cavity in the nanorods, Ag ions were reduced nearby the electron beam, reshaping the core of the nanoparticles without affecting the external shape. The changes in plasmon-induced near-field properties were then mapped with electron energy-loss spectroscopy without disturbing the internal structure, and the results are supported by finite-difference time-domain calculations. This reversible shape and near-field control in a hollow nanoparticle actuated by an external stimulus introduces possibilities for applications in reprogrammable sensors, responsive materials, and optical memory units. Moreover, the liquid-filled nanorod cavity offers new opportunities for in situ microscopy of chemical reactions.
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Affiliation(s)
- Sadegh Yazdi
- Department of Materials Science and NanoEngineering, Rice University , Houston, Texas 77005, United States
| | - Josée R Daniel
- Center for Optics, Photonics and Lasers (COPL), Department of Chemistry, Laval University , Ville de Québec, Québec, Canada , G1 V 0A6
| | - Nicolas Large
- Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
| | - George C Schatz
- Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
| | - Denis Boudreau
- Center for Optics, Photonics and Lasers (COPL), Department of Chemistry, Laval University , Ville de Québec, Québec, Canada , G1 V 0A6
| | - Emilie Ringe
- Department of Materials Science and NanoEngineering, Rice University , Houston, Texas 77005, United States
- Department of Chemistry, Rice University , Houston, Texas 77005, United States
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23
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Provencher L, Hogue J, Desbiens C, Poirier B, Poirier E, Boudreau D, Joyal M, Diorio C, Duchesne N, Chiquette J. Is clinical breast examination important for breast cancer detection? Curr Oncol 2016; 23:e332-9. [PMID: 27536182 PMCID: PMC4974039 DOI: 10.3747/co.23.2881] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Screening clinical breast examination (cbe) is controversial; the use of cbe is declining not only as a screening tool, but also as a diagnostic tool. In the present study, we aimed to assess the value of cbe in breast cancer detection in a tertiary care centre for breast diseases. METHODS This retrospective study of all breast cancers diagnosed between July 1999 and December 2010 at our centre categorized cases according to the mean of detection (cbe, mammography, or both). A cbe was considered "abnormal" in the presence of a mass, nipple discharge, skin or nipple retraction, edema, erythema, peau d'orange, or ulcers. RESULTS During the study period, a complete dataset was available for 6333 treated primary breast cancers. Cancer types were ductal carcinoma in situ (15.3%), invasive ductal carcinoma (75.7%), invasive lobular carcinoma (9.0%), or others (2.2%). Of the 6333 cancers, 36.5% (n = 2312) were detected by mammography alone, 54.8% (n = 3470) by mammography and cbe, and 8.7% (n = 551) by physician-performed cbe alone (or 5.3% if considering ultrasonography). Invasive tumours diagnosed by cbe alone were more often triple-negative, her2-positive, node-positive, and larger than those diagnosed by mammography alone (p < 0.05). CONCLUSIONS A significant number of cancers would have been missed if cbe had not been performed. Compared with cancers detected by mammography alone, those detected by cbe had more aggressive features. Clinical breast examination is a very low-cost test that could improve the detection of breast cancer and could prompt breast ultrasonography in the case of a negative mammogram.
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Affiliation(s)
- L. Provencher
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- chu de Québec–Université Laval, Quebec City, QC
- Department of Surgery, Cancer Research Centre, Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
| | - J.C. Hogue
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- chu de Québec–Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
| | - C. Desbiens
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- chu de Québec–Université Laval, Quebec City, QC
- Department of Surgery, Cancer Research Centre, Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
| | - B. Poirier
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- chu de Québec–Université Laval, Quebec City, QC
- Department of Surgery, Cancer Research Centre, Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
| | - E. Poirier
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- chu de Québec–Université Laval, Quebec City, QC
- Department of Surgery, Cancer Research Centre, Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
| | - D. Boudreau
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- chu de Québec–Université Laval, Quebec City, QC
- Department of Surgery, Cancer Research Centre, Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
| | - M. Joyal
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- chu de Québec–Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
- Department of Family Medicine, Cancer Research Centre, Université Laval, Quebec City, QC
| | - C. Diorio
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
- Department of Social and Preventive Medicine, Cancer Research Centre, Université Laval, Quebec City, QC
| | - N. Duchesne
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- chu de Québec–Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
- Department of Medical Imaging, Cancer Research Centre, Université Laval, Quebec City, QC
| | - J. Chiquette
- Centre des maladies du sein Deschênes-Fabia, chu de Québec–Université Laval, Quebec City, QC
- chu de Québec–Université Laval, Quebec City, QC
- Oncology Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
- Department of Family Medicine, Cancer Research Centre, Université Laval, Quebec City, QC
- Public Health Research Unit, Centre de Recherche du chu de Québec–Université Laval, Quebec City, QC
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24
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Asselin J, Parvinzadeh Gashti M, Boudreau D, Greener J. A Microfluidic Platform with Nanoparticle-Based Metal-Enhanced Fluorescence for pH Mapping Acidified Aqueous Solutions by CO2 Microbubbles. ACTA ACUST UNITED AC 2016. [DOI: 10.1557/adv.2016.288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Gashti MP, Asselin J, Barbeau J, Boudreau D, Greener J. A microfluidic platform with pH imaging for chemical and hydrodynamic stimulation of intact oral biofilms. Lab Chip 2016; 16:1412-9. [PMID: 26956837 DOI: 10.1039/c5lc01540e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A microfluidic platform with a fluorescent nanoparticle-based sensor is demonstrated for real-time, ratiometric pH imaging of biofilms. Sensing is accomplished by a thin patterned layer of covalently bonded Ag@SiO2+FiTC nanoparticles on an embedded planar glass substrate. The system is designed to be sensitive, responsive and give sufficient spatial resolution to enable new micro-scale studies of the dynamic response of oral biofilms to well-controlled chemical and hydrodynamic stimulation. Performance under challenging operational conditions is demonstrated, which include long-duration exposure to sheer stresses, photoexcitation and pH sensor biofouling. After comprehensive validation, the device was used to monitor pH changes at the attachment surface of a biofilm of the oral bacteria, Streptococcus salivarius. By controlling flow and chemical concentration conditions in the microchannel, biochemical and mass transport contributions to the Stephan curve could be probed individually. This opens the way for the analysis of separate contributions to dental caries due to localized acidification directly at the biofilm tooth interface.
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Affiliation(s)
| | - J Asselin
- Département de chimie, Université Laval, Québec (QC), G1V 0A6 Canada. and Centre d'optique, photonique et laser (COPL), Québec (QC), G1V 0A6 Canada
| | - J Barbeau
- Faculté de médecine dentaire, Université de Montréal (QC), H3C 3J4 Canada
| | - D Boudreau
- Département de chimie, Université Laval, Québec (QC), G1V 0A6 Canada. and Centre d'optique, photonique et laser (COPL), Québec (QC), G1V 0A6 Canada
| | - J Greener
- Département de chimie, Université Laval, Québec (QC), G1V 0A6 Canada.
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26
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Nshimyumukiza L, Douville X, Fournier D, Duplantie J, Daher RK, Charlebois I, Longtin J, Papenburg J, Guay M, Boissinot M, Bergeron MG, Boudreau D, Gagné C, Rousseau F, Reinharz D. Cost-effectiveness analysis of antiviral treatment in the management of seasonal influenza A: point-of-care rapid test versus clinical judgment. Influenza Other Respir Viruses 2016; 10:113-21. [PMID: 26574910 PMCID: PMC4746566 DOI: 10.1111/irv.12359] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/23/2015] [Indexed: 11/27/2022] Open
Abstract
Background A point‐of‐care rapid test (POCRT) may help early and targeted use of antiviral drugs for the management of influenza A infection. Objective (i) To determine whether antiviral treatment based on a POCRT for influenza A is cost‐effective and, (ii) to determine the thresholds of key test parameters (sensitivity, specificity and cost) at which a POCRT based‐strategy appears to be cost effective. Methods An hybrid « susceptible, infected, recovered (SIR) » compartmental transmission and Markov decision analytic model was used to simulate the cost‐effectiveness of antiviral treatment based on a POCRT for influenza A in the social perspective. Data input parameters used were retrieved from peer‐review published studies and government databases. The outcome considered was the incremental cost per life‐year saved for one seasonal influenza season. Results In the base‐case analysis, the antiviral treatment based on POCRT saves 2 lives/100 000 person‐years and costs $7600 less than the empirical antiviral treatment based on clinical judgment alone, which demonstrates that the POCRT‐based strategy is dominant. In one and two way‐sensitivity analyses, results were sensitive to the POCRT accuracy and cost, to the vaccination coverage as well as to the prevalence of influenza A. In probabilistic sensitivity analyses, the POCRT strategy is cost‐effective in 66% of cases, for a commonly accepted threshold of $50 000 per life‐year saved. Conclusion The influenza antiviral treatment based on POCRT could be cost‐effective in specific conditions of performance, price and disease prevalence.
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Affiliation(s)
- Léon Nshimyumukiza
- Faculté de Médecine, Département de médecine sociale et préventive, Université Laval, Québec, QC, Canada
| | - Xavier Douville
- Faculté des sciences et génie, Département de génie électrique, Université Laval, Québec, QC, Canada
| | - Diane Fournier
- Faculté des sciences et génie, Département de génie électrique, Université Laval, Québec, QC, Canada
| | - Julie Duplantie
- Faculté de Médecine, Département de médecine sociale et préventive, Université Laval, Québec, QC, Canada
| | - Rana K Daher
- Centre de recherche en infectiologie (CRI), CHU de Québec (CHUQ), Québec, QC, Canada
| | - Isabelle Charlebois
- Centre de recherche en infectiologie (CRI), CHU de Québec (CHUQ), Québec, QC, Canada
| | - Jean Longtin
- Centre de recherche en infectiologie (CRI), CHU de Québec (CHUQ), Québec, QC, Canada.,Faculté de médecine, Département de microbiologie-infectiologie et d'immunologie, Université Laval, Québec, QC, Canada
| | - Jesse Papenburg
- Faculté de Médecine, Département de pédiatrie, Université McGill, Montréal, QC, Canada
| | - Maryse Guay
- Faculté de médecine, Département des sciences de la santé communautaire, Université de Sherbrooke, Longueuil, QC, Canada
| | - Maurice Boissinot
- Faculté de sciences et de génie, Département de physique, génie physique et d'optique, Université Laval, Québec, QC, Canada
| | - Michel G Bergeron
- Centre de recherche en infectiologie (CRI), CHU de Québec (CHUQ), Québec, QC, Canada.,Faculté de médecine, Département de microbiologie-infectiologie et d'immunologie, Université Laval, Québec, QC, Canada
| | - Denis Boudreau
- Faculté de sciences et de génie, Département de chimie, Université Laval, Québec, QC, Canada
| | - Christian Gagné
- Faculté des sciences et génie, Département de génie électrique, Université Laval, Québec, QC, Canada
| | - François Rousseau
- Faculté de médecine, Département de biologie moléculaire, biochimie médicale et pathologie, Université Laval, Québec, QC, Canada.,Unité de recherche en génétique humaine et moléculaire, Axe Santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec (CHUQ), Québec, QC, Canada
| | - Daniel Reinharz
- Faculté de Médecine, Département de médecine sociale et préventive, Université Laval, Québec, QC, Canada
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27
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Boudreau D. Les périodiques en généalogie et en histoire de la famille : des ressources très utiles, mais peu exploitées. documentation 2015. [DOI: 10.7202/1033223ar] [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: 11/17/2022]
Abstract
En héritant de l’ensemble de la collection de ressources en généalogie de la salle Gagnon de la défunte Bibliothèque centrale de Montréal en 2005, le Centre d’archives de Montréal reçoit notamment une grande quantité de revues de ce domaine. Cette acquisition enrichit avantageusement la collection de revues du Centre, jusque-là plutôt modeste. Ce sont plus de 280 titres différents qui forment aujourd’hui cette collection qui compte bien sûr des publications québécoises, mais aussi canadiennes, américaines et européennes. Même s’il n’est pas rare que l’on voie des usagers se consacrer au dépouillement des numéros de l’une ou l’autre de ces revues, il serait faux de dire que le potentiel de ces périodiques pour la recherche en généalogie est bien connu. Notre objectif est donc de valoriser cette collection.
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Affiliation(s)
- Denis Boudreau
- Bibliothécaire, Centre d’archives de Montréal
- Bibliothèque et Archives nationales du Québec
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Barbe JF, Boudreau D. Coup d’oeil sur quatre spécialistes québécoises de la documentation. documentation 2015. [DOI: 10.7202/1029328ar] [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: 11/17/2022]
Abstract
Présentation de quatre entreprises québécoises du milieu documentaire : CEDROM-SNI, un agrégateur de contenus journalistiques; IsacSoft, le développeur du système de gestion de bibliothèques PortFolio; la Banque de titres de langue française (BTLF) et son produit phare Mémento ainsi que les Services documentaires multimédia (SDM), connus de tous les bibliothécaires québécois pour son outil de repérage d’articles de revues REPÈRE et CHOIX, son équivalent dans le monde du livre.
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Bouchareb R, Côté N, Marie-Chloé-Boulanger, Le Quang K, El Husseini D, Asselin J, Hadji F, Lachance D, Shayhidin EE, Mahmut A, Pibarot P, Bossé Y, Messaddeq Y, Boudreau D, Marette A, Mathieu P. Carbonic anhydrase XII in valve interstitial cells promotes the regression of calcific aortic valve stenosis. J Mol Cell Cardiol 2015; 82:104-15. [PMID: 25771146 DOI: 10.1016/j.yjmcc.2015.03.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 02/20/2015] [Accepted: 03/02/2015] [Indexed: 02/05/2023]
Abstract
AIMS Calcific aortic valve stenosis (CAVS) is the most common heart valve disease. In the present work we sought to determine the reversibility of mineralization in the aortic valve. METHODS AND RESULTS By using in vitro analyses we found that valve interstitial cells (VICs) have the ability to resorb minerals. We documented that agonist of P2Y2 receptor (P2Y2R) promoted the expression of carbonic anhydrase XII (CAXII) at the cell membrane of VICs, whereby minerals are resorbed. P2Y2R-mediated mineral resorption was corroborated by using mouse VICs isolated from wild type and P2Y2R(-/-) mice. Measurements of extracellular pH (pHe) by using core-shell nanosensors revealed that P2Y2R-mediated CAXII export to the cell membrane led to an acidification of extracellular space, whereby minerals are resorbed. In vivo, we next treated LDLR(-/-)/ApoB(100/100)/IGF2 mice, which had developed CAVS under a high-fat/high-sucrose diet for 8 months, with 2-thioUTP (a P2Y2R agonist) or saline for the next 2 months. The administration of 2-thioUTP (2mg/kg/day i.p.) reduced the mineral volume in the aortic valve measured with serial microCT analyses, which improved hemodynamics and reduced left ventricular hypertrophy (LVH). Examination of leaflets at necropsy confirmed a lower level of mineralization and fibrosis along with higher levels of CAXII in mice under 2-thioUTP. In another series of experiment, the administration of acetazolamide (a CA inhibitor) prevented the acidification of leaflets and the regression of CAVS induced by 2-thioUTP in LDLR(-/-)/ApoB(100/100)/IGF2 mice. CONCLUSION P2Y2R-mediated expression of CAXII by VICs acidifies the extracellular space and promotes the regression of CAVS.
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Affiliation(s)
- Rihab Bouchareb
- Laboratoire d'Études Moléculaires des Valvulopathies (LEMV), Groupe de Recherche en Valvulopathies (GRV), Quebec Heart and Lung Institute/Research Center, Department of Surgery, Laval University, Québec, Canada
| | - Nancy Côté
- Laboratoire d'Études Moléculaires des Valvulopathies (LEMV), Groupe de Recherche en Valvulopathies (GRV), Quebec Heart and Lung Institute/Research Center, Department of Surgery, Laval University, Québec, Canada
| | - Marie-Chloé-Boulanger
- Laboratoire d'Études Moléculaires des Valvulopathies (LEMV), Groupe de Recherche en Valvulopathies (GRV), Quebec Heart and Lung Institute/Research Center, Department of Surgery, Laval University, Québec, Canada
| | - Khai Le Quang
- Department of Medicine, Laval University, Québec, Canada
| | - Diala El Husseini
- Laboratoire d'Études Moléculaires des Valvulopathies (LEMV), Groupe de Recherche en Valvulopathies (GRV), Quebec Heart and Lung Institute/Research Center, Department of Surgery, Laval University, Québec, Canada
| | - Jérémie Asselin
- The Center for Optics, Photonics and Lasers (COPL), Department of Physics, Laval University, Québec, Canada
| | - Fayez Hadji
- Laboratoire d'Études Moléculaires des Valvulopathies (LEMV), Groupe de Recherche en Valvulopathies (GRV), Quebec Heart and Lung Institute/Research Center, Department of Surgery, Laval University, Québec, Canada
| | | | - Elnur Elyar Shayhidin
- Laboratoire d'Études Moléculaires des Valvulopathies (LEMV), Groupe de Recherche en Valvulopathies (GRV), Quebec Heart and Lung Institute/Research Center, Department of Surgery, Laval University, Québec, Canada
| | - Ablajan Mahmut
- Laboratoire d'Études Moléculaires des Valvulopathies (LEMV), Groupe de Recherche en Valvulopathies (GRV), Quebec Heart and Lung Institute/Research Center, Department of Surgery, Laval University, Québec, Canada
| | | | - Yohan Bossé
- Department of Molecular Medicine, Laval University, Québec, Canada
| | - Younes Messaddeq
- The Center for Optics, Photonics and Lasers (COPL), Department of Physics, Laval University, Québec, Canada
| | - Denis Boudreau
- The Center for Optics, Photonics and Lasers (COPL), Department of Physics, Laval University, Québec, Canada
| | - André Marette
- Department of Medicine, Laval University, Québec, Canada
| | - Patrick Mathieu
- Laboratoire d'Études Moléculaires des Valvulopathies (LEMV), Groupe de Recherche en Valvulopathies (GRV), Quebec Heart and Lung Institute/Research Center, Department of Surgery, Laval University, Québec, Canada.
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Brouard D, Ratelle O, Perreault J, Boudreau D, St-Louis M. PCR-free blood group genotyping using a nanobiosensor. Vox Sang 2014; 108:197-204. [PMID: 25469570 DOI: 10.1111/vox.12207] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 06/05/2014] [Revised: 07/21/2014] [Accepted: 09/16/2014] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND OBJECTIVES The last two decades have seen major developments in genotyping assays to facilitate the procurement of red blood cell units to alloimmunized patients. To make genotyping faster, simpler and less costly, a nanotechnology approach based on metal/silica fluorescent nanoparticles and a polymer-based hybridization optical transducer was designed. The objectives of this study were (1) to verify whether this nanobiosensor has the ability to discriminate single nucleotide polymorphisms in non-amplified genomic DNA and (2) to establish whether the signal generated by the nanobiosensor is sufficiently intense to be detected by standard flow cytometry. MATERIALS AND METHODS Silver-core silica-shell fluorescent nanoparticles (Ag@SiO₂) were prepared, and amine-modified DNA probes were grafted to their surface. A cationic conjugated polymer was electrostatically bound to the surface probes to become optically active upon hybridization with a target. Two nanobiosensor formulations specific to DO*01 and DO*02 alleles were prepared. DNA was extracted from whole blood and mixed with the nanobiosensor for hybridization. The nanobiosensor fluorescence was measured by flow cytometry. RESULTS Nine volunteers were typed for Dombrock blood group antigens DO*01 and DO*02. A statistically significant increase in the optical transduction signal was observed for sequence-specific samples. All nine genotypes were correctly identified when compared to standardized PCR assays. CONCLUSION The nanobiosensor provides rapid and simple genotyping of blood group antigens from unamplified genomic DNA and can be measured using standard flow cytometers. This PCR-free approach could be applied to any known genetic polymorphism.
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Affiliation(s)
- D Brouard
- Recherche et développement, Héma-Québec, Québec, QC, Canada
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31
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Bouchareb R, Côté N, Boulanger M, Khai L, Diala E, Jérémie A, Fayez H, Lachance D, Mahmut A, Pibarot P, Bossé Y, Messaddeq Y, Boudreau D, Marette A, Mathieu P. REGRESSION OF CALCIFIC AORTIC VALVE STENOSIS: A NOVEL FUNCTION FOR VALVE INTERSTITIAL CELLS AND CARBONIC ANHYDRASE XII. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Asselin J, Roy C, Boudreau D, Messaddeq Y, Bouchareb R, Mathieu P. Supported core–shell nanobiosensors for quantitative fluorescence imaging of extracellular pH. Chem Commun (Camb) 2014; 50:13746-9. [DOI: 10.1039/c4cc06075j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
“Click” chemistry was used to functionalize silica substrates with pH-sensitive nanoparticles, thus producing uniform and highly luminescent ion-sensitive surfaces for quantitative and spatially-resolved extracellular measurements on live cells.
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Affiliation(s)
- Jérémie Asselin
- Département de chimie
- Faculté de Sciences et Génie
- Université Laval
- Québec (QC), Canada G1V 0A6
- Centre d'optique photonique et laser (COPL)
| | - Carl Roy
- Département de chimie
- Faculté de Sciences et Génie
- Université Laval
- Québec (QC), Canada G1V 0A6
- Centre d'optique photonique et laser (COPL)
| | - Denis Boudreau
- Département de chimie
- Faculté de Sciences et Génie
- Université Laval
- Québec (QC), Canada G1V 0A6
- Centre d'optique photonique et laser (COPL)
| | - Younès Messaddeq
- Centre d'optique photonique et laser (COPL)
- Université Laval
- Québec (QC), Canada G1V 0A6
| | - Rihab Bouchareb
- Laboratoire d'études moléculaires des valvulopathies
- Institut universitaire de cardiologie et de pneumologie de Québec
- Université Laval
- Québec (QC), Canada G1V 4G5
| | - Patrick Mathieu
- Laboratoire d'études moléculaires des valvulopathies
- Institut universitaire de cardiologie et de pneumologie de Québec
- Université Laval
- Québec (QC), Canada G1V 4G5
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Magnan F, Gagnon J, Fontaine FG, Boudreau D. Indium@silica core–shell nanoparticles as plasmonic enhancers of molecular luminescence in the UV region. Chem Commun (Camb) 2013; 49:9299-301. [DOI: 10.1039/c3cc45276j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rainville L, Dorais MC, Boudreau D. Controlled synthesis of low polydispersity Ag@SiO2 core–shell nanoparticles for use in plasmonic applications. RSC Adv 2013. [DOI: 10.1039/c3ra41677a] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Wood T, Lewis BJ, McDermott K, Bennett LGI, Avarmaa K, Corcoran EC, Wilkinson D, Jones A, Jones T, Kennedy E, Prud'homme-Lalonde L, Boudreau D, Gravel JF, Drolet C, Kerr A, Schreiner LJ, Pierre JRM, Blagoeva R, Veres T. Use of a dual-labelled oligonucleotide as a DNA dosemeter for radiological exposure detection. Radiat Prot Dosimetry 2012; 148:20-33. [PMID: 21335332 DOI: 10.1093/rpd/ncq599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A reporter molecule consisting of a synthetic oligonucleotide is being characterised for a novel damage detection scenario for its potential use as a field-deployable, personal deoxyribonucleic acid (DNA) dosemeter for radiation detection. This dosemeter is devoid of any biological properties other than being naked DNA and therefore has no DNA repair capabilities. It supports biodosimetry techniques, which require lengthy analysis of cells from irradiated individuals, and improves upon inorganic dosimetry, thereby providing for a more relevant means of measuring the accumulated dose from a potentially mixed-radiation field. Radiation-induced single strand breaks (SSBs) within the DNA result in a quantifiable fluorescent signal. Proof of concept has been achieved over 250 mGy-10 Gy dose range in radiation fields from ⁶⁰Co, with similar results seen using a linear accelerator X-ray source. Further refinements to both the molecule and the exposure/detection platform are expected to lead to enhanced levels of detection for mixed-field radiological events.
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Affiliation(s)
- T Wood
- Royal Military College of Canada, Kingston, Ontario, Canada K7K 7B4
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Brouard D, Viger ML, Bracamonte AG, Boudreau D. Label-free biosensing based on multilayer fluorescent nanocomposites and a cationic polymeric transducer. ACS Nano 2011; 5:1888-96. [PMID: 21344882 DOI: 10.1021/nn102776m] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
This study describes the preparation and characterization of a DNA sensing architecture combining the molecular recognition capabilities of a cationic conjugated polymer transducer with highly fluorescent core-shell nanoparticles (NPs). The very structure of the probe-labeled NPs and the polymer-induced formation of NP aggregates maximize the proximity between the polymer donor and acceptor NPs that is required for optimal resonant energy transfer. Each hybridization event is signaled by a potentially large number of excited reporters following the efficient plasmon-enhanced energy transfer between target-activated polymer transducer and fluorophores located in the self-assembled core-shell aggregates, resulting in direct molecular detection of target nucleic acids at femtomolar concentrations.
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Affiliation(s)
- Danny Brouard
- Département de chimie and Centre d'optique, photonique et laser (COPL), Université Laval, Québec (QC), Canada G1V 0A6
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Abstract
This study describes the preparation and characterization of novel multilayer core-shell nanoparticles displaying metal-enhanced Forster resonant energy transfer. The increase in range and efficiency of Forster resonant energy transfer in these fluorescent nanocomposites and their vastly improved luminosity make them promising optical probes for a variety of applications such as cell imaging and biosensing.
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Affiliation(s)
- Mathieu Lessard-Viger
- Departement de Chimie et Centre d'Optique, Photonique et Laser, Universite Laval, Quebec, Canada
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Dube P, Sidéris L, Boudreau D, Leblanc G, Leclerc YE. Preoperative administration of imatinib in patients with large gastrointestinal stromal tumors can change surgical strategy and improve the quality of resection in most patients: Clinical results of gap study. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Doré K, Neagu-Plesu R, Leclerc M, Boudreau D, Ritcey AM. Characterization of superlighting polymer-DNA aggregates: a fluorescence and light scattering study. Langmuir 2007; 23:258-64. [PMID: 17190512 DOI: 10.1021/la061699a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The massive amplification of fluorescence signal observed upon hybridization of as few as five DNA molecules into self-assembled structures formed between a cationic polymer and DNA oligonucleotides is investigated. These superlighting polymer-DNA aggregates were studied by fluorescence spectroscopy, static and dynamic light scattering, and zeta potential measurements in order to characterize the aggregation behavior and to understand the processes involved during DNA detection. Multi-angle laser light scattering was also used to obtain the weight-average aggregate mass (AM), the aggregation number (Nagg), the radius of gyration (Rg), and the dissymmetry ratio (z). These results have been used, together with TEM imaging, to propose a suitable physical model for the aggregates.
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Affiliation(s)
- Kim Doré
- Department of Chemistry, Centre d'optique, photonique et laser (COPL), and Centre de recherches sur la science et l'ingénierie des macromolécules (CERSIM), Université Laval, Quebec City, QC, Canada
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41
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Boudreau D, Fuks A. William Osler and McGill: a continuing resonance. Osler Libr Newsl 2007; 108:1-4. [PMID: 18488850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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Najari A, Ho HA, Gravel JF, Nobert P, Boudreau D, Leclerc M. Reagentless Ultrasensitive Specific DNA Array Detection Based on Responsive Polymeric Biochips. Anal Chem 2006; 78:7896-9. [PMID: 17105186 DOI: 10.1021/ac061650+] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Self-assembled molecular structures immobilized on solid substrates and composed of fluorophore-tagged oligonucleotide probes and an optical polymeric transducer were investigated for the trace level detection of DNA target molecules. Rapid and efficient energy transfer between the polymeric transducer and fluorophores within the molecular aggregates leads to a massive intrinsic amplification of the fluorescence signal and to the label-free detection of as little as 300 DNA molecules, with the specificity required for the detection of single-nucleotide mismatches. This capacity for attomolar detection levels while the sensing structures are attached onto solid supports could lead to the development of biochip platforms for fast and simple PCR-free multitarget DNA detection.
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Affiliation(s)
- Ahmed Najari
- Department of Chemistry and Centre de Recherches sur la Science et L'ingénierie des Macromolécules (CERSIM), Université Laval, Québec, Canada G1K 7P4
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Dubus S, Gravel JF, Le Drogoff B, Nobert P, Veres T, Boudreau D. PCR-Free DNA Detection Using a Magnetic Bead-Supported Polymeric Transducer and Microelectromagnetic Traps. Anal Chem 2006; 78:4457-64. [PMID: 16808454 DOI: 10.1021/ac060486n] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A fluorescent polymeric hybridization transducer supported on magnetic microbeads was investigated for the rapid, ultrasensitive, and sequence-specific detection of DNA. We show that the polymer derivative can be used to detect target DNA directly on magnetic particles by preparing "target-ready" microbeads grafted with the polymer and suitable DNA probes. A detection limit of approximately 200 target copies in a probed volume of 150 muL (1.4 copies/muL) was obtained for a DNA sequence specific to Candida albicans This detection scheme does not require the release of the hybridized target DNA prior to its detection or the labeling or amplification of the nucleic acids. Furthermore, we show that the fluorescence from these biosensing magnetic beads can be read while magnetically confined in a small volume by a microelectromagnetic trap, which offers the possibility of performing both the preconcentration and detection steps simultaneously on the same support. The combination of the fluorescent polymer biosensor with magnetic particle-assisted DNA preconcentration extends the application of this ultrasensitive biosensor to biological samples with complex matrixes and to integrated lab-on-a-chip platforms, where it could be used for fast multitarget DNA detection in point-of-care diagnostics and field analysis.
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Affiliation(s)
- Sébastien Dubus
- Department of Chemistry and Centre d'Optique, Photonique et Laser (COPL), Université Laval, Québec, Canada
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Boudreau D, Yu O, Miglioretti D, Buist D. Statins and Breast Cancer Risk: Is There an Association? Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s256-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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Doré K, Leclerc M, Boudreau D. Investigation of a Fluorescence Signal Amplification Mechanism Used for the Direct Molecular Detection of Nucleic Acids. J Fluoresc 2006; 16:259-65. [PMID: 16691456 DOI: 10.1007/s10895-006-0098-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2005] [Accepted: 03/29/2006] [Indexed: 10/24/2022]
Abstract
A fluorescence signal amplification mechanism allowing detection limits for DNA in the zeptomolar range was investigated. Photophysical properties of the molecular system were studied in order to better explain the signal amplification that is observed. We show that the confinement of a fluorescent DNA hybridization transducer in aggregates improves its quantum yield and photostability. Furthermore, we show that the combination of the resonance energy transfer occurring within the aggregates with the use of a conjugated polymer as the hybridization transducer and donor allows ultrafast and efficient energy coupling to the aggregates and can lead to the excitation of a large number of acceptors by only one donor.
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Affiliation(s)
- Kim Doré
- Chemistry Department and Centre d'optique, photonique et laser (COPL), Université Laval, Québec, QC, Canada, G1K 7P4
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Ho HA, Doré K, Boissinot M, Bergeron MG, Tanguay RM, Boudreau D, Leclerc M. Direct molecular detection of nucleic acids by fluorescence signal amplification. J Am Chem Soc 2006; 127:12673-6. [PMID: 16144416 DOI: 10.1021/ja053417j] [Citation(s) in RCA: 187] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An integrated PCR-free DNA sensor, which combines a sequence-specific receptor, an optical polymeric transducer, and an intrinsic fluorescence amplification mechanism, is reported. This sensor is based on the different conformations adopted by a cationic polythiophene when electrostatically bound to ss-DNA or ds-DNA, and on the efficient and fast energy transfer between the resulting fluorescent polythiophene/ds-DNA complex and neighboring fluorophores attached to ss-DNA probes. This molecular system allows the detection of only five molecules in 3 mL of an aqueous solution, or 3 zM, in 5 min. Moreover, this work demonstrates, for the first time, the direct detection of single nucleotide polymorphisms (SNPs) from clinical samples in only a few minutes, without the need for nucleic acid amplification.
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Affiliation(s)
- Hoang A Ho
- Department of Chemistry, the Research Center in Infectiology and the Laboratory of Cell and Developmental Genetics, Université Laval, Québec City, Qc, Canada G1K 7P4
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Viger ML, Gravel JFY, Brouard D, Beauchemin D, Boudreau D. Use of Sol−Gels as Solid Matrixes for Trace Analysis by UV Laser Ablation and Laser-Enhanced Ionization Detection. Anal Chem 2004; 77:706-10. [PMID: 15649076 DOI: 10.1021/ac048884i] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Zirconium and silicon sol-gels were investigated as solid materials for trace elemental analysis of pelletized solid samples by laser ablation and laser-enhanced ionization. The highly homogeneous dispersion of an internal standard spiked in the solid material obtained with the sol-gel formation process leads to a significant improvement in signal repeatability and to an increase in the precision of measurements through better correction of variations in the laser ablation rate. Signal repeatability values of 5-8% RSD were obtained for Pb in NIST 1632c Bituminous Coal sample pellets prepared using both sol-gels, as compared to 9-21% for graphite-based sample pellets. Furthermore, the zirconium sol-gel was shown to offer better resilience to signal bias due to preferential ablation and a more accurate correction of ablation rate using the internal standardization method.
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Affiliation(s)
- Mathieu L Viger
- Department of Chemistry and Centre d'optique, Photonique et Laser (COPL), Université Laval, Quebec City, PQ, Canada G1K 7P4
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Abstract
A femtosecond laser-induced clean fluorescence technique was explored as a means to monitor halogenated alkanes in the atmosphere. Characteristic difluorocarbene radical (CF2) fluorescence in the UV-vis can be generated inside a femtosecond laser-induced filament for different halocarbons. We show that, due to different dissociation and excitation kinetics leading to fluorescence emission, it is possible to temporally resolve the characteristic fluorescence of CF2-containing halocarbons from that of background species, therefore enhancing the signal-to-noise ratio. Laboratory-scale experiments demonstrate the potential use of femtosecond laser-induced clean fluorescence for the remote sensing of halocarbons in the atmosphere. The combination of this detection strategy with LIDAR could allow the long-range monitoring of several atmospheric species with a single laser source, eventually leading to a better understanding of chemical and dynamic processes affecting global warming, ozone loss, tropospheric pollution, and weather prediction.
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Affiliation(s)
- J-F Gravel
- Department of Physics, Physical Engineering and Optics and Centre d'Optique, Photonique et Laser (COPL), Université Laval, Québec (QC), Canada G1K 7P4
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Gravel JFY, Viger ML, Nobert P, Boudreau D. Multielemental laser-enhanced ionization spectrometry for the determination of lead at the trace level in pelletized coal using laser ablation and internal standard signal normalization. Appl Spectrosc 2004; 58:727-733. [PMID: 18171515 DOI: 10.1366/000370204873088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Laser ablation laser-enhanced ionization (LA-LEI) was used for the simultaneous measurement of lead and indium in pelletized graphite and coal samples. UV Laser ablation of the solid samples was performed in an ablation cell and the ablated material was carried by a flow of gas to a miniature LEI flame where lead was detected. The influence of parameters such as binder content of the solid pellets and dispersion of the analytes spiked in the sample material, as well as the number of ablation pulses per crater on signal repeatability and on the size and shape of ejected particles was examined. Measurement repeatability values of 2 to 5% of relative standard deviation were obtained using indium as an internal standard to correct for variations in the ablation rate. A limit of detection of 120 nanograms per gram was calculated for the determination of Pb in high-purity graphite. The Pb concentration in the NIST 1632c Bituminous Coal certified reference material was determined to within 1% of its certified value, using graphite as the matrix-matching material and In as the internal standard in pelletized solid samples.
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Affiliation(s)
- Jean-François Y Gravel
- Center for Optics, Photonics and Lasers (COPL) and Department of Chemistry, Université Laval, Quebec City (PQ), Canada G1K 7P4
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Doré K, Dubus S, Ho HA, Lévesque I, Brunette M, Corbeil G, Boissinot M, Boivin G, Bergeron MG, Boudreau D, Leclerc M. Fluorescent Polymeric Transducer for the Rapid, Simple, and Specific Detection of Nucleic Acids at the Zeptomole Level. J Am Chem Soc 2004; 126:4240-4. [PMID: 15053613 DOI: 10.1021/ja038900d] [Citation(s) in RCA: 240] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the specific detection of a few hundred molecules of genetic material using a fluorescent polythiophene biosensor. Such recognition is based on simple electrostatic interactions between a cationic polymeric optical transducer and the negatively charged nucleic acid target and can be done in less than 1 h, simply and affordably, and without any chemical reaction. This simple system is versatile enough to detect nucleic acids of various lengths, including a segment from the RNA genome of the Influenza virus.
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Affiliation(s)
- Kim Doré
- Centre de Recherche en Sciences et Ingénierie des Macromolécules, Département de Chimie, Université Laval, Quebec City, Quebec, Canada G1K 7P4
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