1
|
Methylene Blue-Loaded Mesoporous Silica-Coated Gold Nanorods on Graphene Oxide for Synergistic Photothermal and Photodynamic Therapy. Pharmaceutics 2022; 14:pharmaceutics14102242. [PMID: 36297675 PMCID: PMC9612258 DOI: 10.3390/pharmaceutics14102242] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/01/2022] [Accepted: 10/18/2022] [Indexed: 11/25/2022] Open
Abstract
Photo-nanotheranostics integrates near-infrared (NIR) light-triggered diagnostics and therapeutics, which are combined into a novel all-in-one phototheranostic nanomaterial that holds great promise for the early detection and precise treatment of cancer. In this study, we developed methylene blue-loaded mesoporous silica-coated gold nanorods on graphene oxide (MB-GNR@mSiO2-GO) as an all-in-one photo-nanotheranostic agent for intracellular surface-enhanced Raman scattering (SERS) imaging-guided photothermal therapy (PTT)/photodynamic therapy (PDT) for cancer. Amine functionalization of the MB-GNR@mSiO2 surfaces was performed using 3-aminopropyltriethoxysilane (APTES), which was well anchored on the carboxyl groups of graphene oxide (GO) nanosheets uniformly, and showed a remarkably higher photothermal conversion efficiency (48.93%), resulting in outstanding PTT/PDT for cancer. The in vitro photothermal/photodynamic effect of MB-GNR@mSiO2-GO with laser irradiation showed significantly reduced cell viability (6.32%), indicating that MB-GNR@mSiO2-GO with laser irradiation induced significantly more cell deaths. Under laser irradiation, MB-GNR@mSiO2-GO showed a strong SERS effect, which permits accurate cancer cell detection by SERS imaging. Subsequently, the same Raman laser can focus on highly detected MDA-MB-23l cells for a prolonged time to perform PTT/PDT. Therefore, MB-GNR@mSiO2-GO has great potential for precise SERS imaging-guided synergistic PTT/PDT for cancer.
Collapse
|
2
|
Awada C. Plasmonic Enhanced SERS in Ag/TiO 2 Nanostructured Film: An Experimental and Theoretical Study. MICROMACHINES 2022; 13:mi13101595. [PMID: 36295948 PMCID: PMC9610157 DOI: 10.3390/mi13101595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/14/2022] [Accepted: 09/21/2022] [Indexed: 05/30/2023]
Abstract
In this work, we present a new study on the electromagnetic (EM) enhancement properties generated by Ag/TiO2 toward the finger print of methylene blue (MB) molecules deposited on the surface of Ag nanostructures. SERS intensity generated by MB molecules reflects the interaction between the local electric field and their bonds. A power-dependent SERS study in order to reveal the magnitude effect of a local electric field on the vibration behavior of molecular bonds of MB was performed. A theoretical study using finite element (COMSOL Multiphysics) was performed in order to understand the effect of interparticle distance of Ag nanoparticles on the enhancement properties.
Collapse
Affiliation(s)
- Chawki Awada
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| |
Collapse
|
3
|
Bistaffa MJ, Camacho SA, Pazin WM, Constantino CJL, Oliveira ON, Aoki PHB. Immunoassay platform with surface-enhanced resonance Raman scattering for detecting trace levels of SARS-CoV-2 spike protein. Talanta 2022; 244:123381. [PMID: 35364338 PMCID: PMC8928707 DOI: 10.1016/j.talanta.2022.123381] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 03/06/2022] [Accepted: 03/11/2022] [Indexed: 12/15/2022]
Abstract
The early diagnosis of Coronavirus disease (COVID-19) requires either an accurate detection of genetic material or a sensitive detection of viral proteins. In this work, we designed an immunoassay platform for detecting trace levels of SARS-CoV-2 spike (S) protein. It is based on surface-enhanced resonance Raman scattering (SERRS) of methylene blue (MB) adsorbed onto spherical gold nanoparticles (AuNPs) and coated with a 6 nm silica shell. The latter shell in the SERRS nanoprobe prevented aggregation and permitted functionalization with SARS-CoV-2 antibodies. Specificity of the immunoassay was achieved by combining this functionalization with antibody immobilization on the cover slides that served as the platform support. Different concentrations of SARS-CoV-2 antigen could be distinguished and the lack of influence of interferents was confirmed by treating SERRS data with the multidimensional projection technique Sammon's mapping. With SERRS using a laser line at 633 nm, the lowest concentration of spike protein detected was 10 pg/mL, achieving a limit of detection (LOD) of 0.046 ng/mL (0.60 pM). This value is comparable to the lowest concentrations in the plasma of COVID-19 patients at the onset of symptoms, thus indicating that the SERRS immunoassay platform may be employed for early diagnosis.
Collapse
Affiliation(s)
- Maria J Bistaffa
- São Paulo State University (UNESP), School of Sciences, Humanities and Languages, Assis, SP, 19806-900, Brazil
| | - Sabrina A Camacho
- São Paulo State University (UNESP), School of Sciences, Humanities and Languages, Assis, SP, 19806-900, Brazil; IFSC, São Carlos Institute of Physics, University of São Paulo (USP), São Carlos, SP, 13566-590, Brazil.
| | - Wallance M Pazin
- IFSC, São Carlos Institute of Physics, University of São Paulo (USP), São Carlos, SP, 13566-590, Brazil; São Paulo State University (UNESP), School of Technology and Applied Sciences, 19060-900, Presidente Prudente, SP, Brazil
| | - Carlos J L Constantino
- São Paulo State University (UNESP), School of Technology and Applied Sciences, 19060-900, Presidente Prudente, SP, Brazil
| | - Osvaldo N Oliveira
- IFSC, São Carlos Institute of Physics, University of São Paulo (USP), São Carlos, SP, 13566-590, Brazil
| | - Pedro H B Aoki
- São Paulo State University (UNESP), School of Sciences, Humanities and Languages, Assis, SP, 19806-900, Brazil
| |
Collapse
|
4
|
Wu R, Jin Q, Storey C, Collins J, Gomard G, Lemmer U, Canham L, Kling R, Kaplan A. Gold nanoplasmonic particles in tunable porous silicon 3D scaffolds for ultra-low concentration detection by SERS. NANOSCALE HORIZONS 2021; 6:781-790. [PMID: 34355229 DOI: 10.1039/d1nh00228g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A composite material of plasmonic nanoparticles embedded in a scaffold of nano-porous silicon offers unmatched capabilities for use as a SERS substrate. The marriage of these components presents an exclusive combination of tightly focused amplification of Localised Surface Plasmon (LSP) fields inside the material with an extremely high surface-to-volume ratio. This provides favourable conditions for a single molecule or extremely low concentration detection by SERS. In this work the advantage of the composite is demonstrated by SERS detection of Methylene Blue at a concentration as low as a few picomolars. We systematically investigate the plasmonic properties of the material by imaging its morphology, establishing its composition and the effect on the LSP resonance optical spectra.
Collapse
Affiliation(s)
- Rihan Wu
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.
| | - Qihao Jin
- Light Technology Institute, Karlsruhe Institute of Technology, Engesserstrasse 13, 76131 Karlsruhe, Germany
| | - Catherine Storey
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.
| | - Jack Collins
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.
| | - Guillaume Gomard
- Carl Zeiss AG, ZEISS Innovation Hub@KIT, Hermann-von-Helmholtz-Platz 6, 76344 Eggenstein-Leopoldshafen, Germany
| | - Uli Lemmer
- Light Technology Institute, Karlsruhe Institute of Technology, Engesserstrasse 13, 76131 Karlsruhe, Germany
| | - Leigh Canham
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.
| | - Rainer Kling
- Light Technology Institute, Karlsruhe Institute of Technology, Engesserstrasse 13, 76131 Karlsruhe, Germany
| | - Andrey Kaplan
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.
| |
Collapse
|
5
|
Reduced cytotoxicity of CTAB-templated silica layer on gold nanorod using fluorescence dyes and its application in cancer theranostics. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.01.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
6
|
Shan C, Huang Y, Wei J, Chen M, Wu L. Ultra-high thermally stable gold nanorods/radial mesoporous silica and their application in enhanced chemo-photothermal therapy. RSC Adv 2021; 11:10416-10424. [PMID: 35423593 PMCID: PMC8695621 DOI: 10.1039/d1ra00213a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/22/2021] [Indexed: 12/01/2022] Open
Abstract
In this work, gold nanorods embedded in ultra-thick silica shells with radial mesopores (AuNR/R-SiO2) were successfully synthesized in an ethanol/water solution. By optimizing the concentration of CTAB and the volume of ethanol, a shell thickness up to 83 nm was realized. Taking advantage of the ultra-thick silica shell, AuNR/R-SiO2 exhibited ultra-high thermal stability—could retain the integrity and photothermal effects even after 800 °C thermal annealing, providing inspiring sights into the application under some extreme conditions. After continuous irradiation for twenty times, the photothermal effects of AuNRs coated with R-SiO2 still remained perfect without performance degradation and shape change. Besides, abundant mesopores could effectively improve the photothermal conversion efficiency of AuNRs. AuNR/R-SiO2 exhibited an outstanding loading capacity up to 2178 mg g−1 with doxorubicin (DOX) as the model drug, and the release behaviors could be nicely controlled by acidity and near-infrared (NIR) laser to achieve the “On-demand” mode. In vitro experiments showed that AuNR/R-SiO2 were biocompatible and easy to be internalized by HeLa cells. In addition, due to the ultra-thick silica shell, the effect of the combined chemo-photothermal therapy using AuNR/R-SiO2/DOX was significantly enhanced, showing a higher therapeutic efficiency than single chem- or photothermal therapy. It was worth noting that AuNR/R-SiO2 are effective and promising for drug delivery and tumor therapy. AuNRs coated with ultra-thick SiO2 shells exhibited ultra-high thermal stability (800 °C), excellent photothermal conversion efficiency (70%) and outstanding loading capacity. The drug release could be nicely controlled by acidity and NIR laser to achieve the “On-demand” mode.![]()
Collapse
Affiliation(s)
- Chun Shan
- Department of Materials Science
- State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai
- China
| | - Yuting Huang
- Department of Materials Science
- State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai
- China
| | - Junhao Wei
- School of Life Sciences and Technology
- Tongji University
- Shanghai
- China
| | - Min Chen
- Department of Materials Science
- State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai
- China
| | - Limin Wu
- Department of Materials Science
- State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai
- China
| |
Collapse
|
7
|
Moll B, Tichelkamp T, Wegner S, Francis B, Müller TJJ, Janiak C. Near-infrared (NIR) surface-enhanced Raman spectroscopy (SERS) study of novel functional phenothiazines for potential use in dye sensitized solar cells (DSSC). RSC Adv 2019; 9:37365-37375. [PMID: 35542299 PMCID: PMC9075589 DOI: 10.1039/c9ra08675g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 10/28/2019] [Indexed: 12/02/2022] Open
Abstract
Phenothiazines are of potential use as dye sensitizers in Grätzel-type dye sensitized solar cells (DSSC). Plasmonic nanoparticles like gold nanoparticles can enhance the power conversion efficiency of these solar cells. In this work near-infrared surface-enhanced Raman spectroscopy (NIR-SERS) is used to investigate the interaction between six novel phenothiazine-merocyanine dyes containing the three different functional groups rhodanine, 1,3-indanedione and cyanoacylic acid with plasmonic nanomaterials, to decide if the incorporation of plasmonic nanoparticles could enhance the efficiency of a Grätzel-type solar cell. The studies were carried out in the solution state using spherical and rod-shaped gold nanostructures. With KCl induced agglomerated spherical gold nanoparticles, forming SERS hot spots, the results showed low detection limits between 0.1 μmol L-1 for rhodanine containing phenothiazine dyes, because of the formation of Au-S bonds and 3 μmol L-1 for cyanoacrylic acid containing dyes, which formed H-aggregates in the watery dispersion. Results with gold nanorods showed similar trends in the SERS measurements with lower limits of detection, because of a shielding effect from the strongly-bound surfactant. Additional fluorescence studies were carried out to determine if the incorporation of nanostructures leads to fluorescence quenching. Overall we conclude that the addition of gold nanoparticles to rhodanine and 1,3-indanedione containing phenothiazine merocyanine dyes could enhance their performance in Grätzel-type solar cells, because of their strong interactions with plasmonic nanoparticles.
Collapse
Affiliation(s)
- Bastian Moll
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität D-40204 Düsseldorf Germany
| | - Thomas Tichelkamp
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität D-40204 Düsseldorf Germany
| | - Susann Wegner
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität D-40204 Düsseldorf Germany
| | - Biju Francis
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität D-40204 Düsseldorf Germany
| | - Thomas J J Müller
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität D-40204 Düsseldorf Germany
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität D-40204 Düsseldorf Germany
| |
Collapse
|