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Strnad Š, Vrkoslav V, Mengr A, Fabián O, Rybáček J, Kubánek M, Melenovský V, Maletínská L, Cvačka J. Thermal evaporation as sample preparation for silver-assisted laser desorption/ionization mass spectrometry imaging of cholesterol in amyloid tissues. Analyst 2024; 149:3152-3160. [PMID: 38630503 DOI: 10.1039/d4an00181h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Cholesterol plays an important biological role in the body, and its disruption in homeostasis and synthesis has been implicated in several diseases. Mapping the locations of cholesterol is crucial for gaining a better understanding of these conditions. Silver deposition has proven to be an effective method for analyzing cholesterol using mass spectrometry imaging (MSI). We optimized and evaluated thermal evaporation as an alternative deposition technique to sputtering for silver deposition in MSI of cholesterol. A silver layer with a thickness of 6 nm provided an optimal combination of cholesterol signal intensity and mass resolution. The deposition of an ultrathin nanofilm of silver enabled high-resolution MSI with a pixel size of 10 μm. We used this optimized method to visualize the distribution of cholesterol in the senile plaques in the brains of APP/PS1 mice, a model that resembles Alzheimer's disease pathology. We found that cholesterol was evenly distributed across the frontal cortex tissue, with no evidence of plaque-like accumulation. Additionally, we investigated the presence and distribution of cholesterol in myocardial sections of a human heart affected by wild-type ATTR amyloidosis. We identified the presence of cholesterol in areas with amyloid deposition, but complete colocalization was not observed.
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Affiliation(s)
- Štěpán Strnad
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, 166 10, Prague, Czech Republic.
| | - Vladimír Vrkoslav
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, 166 10, Prague, Czech Republic.
| | - Anna Mengr
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, 166 10, Prague, Czech Republic.
| | - Ondřej Fabián
- Institute for Clinical and Experimental Medicine, 140 21, Prague, Czech Republic
- Department of Pathology and Molecular Medicine, Third Faculty of Medicine, Charles University and Thomayer Hospital, 140 59, Prague, Czech Republic
| | - Jiří Rybáček
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, 166 10, Prague, Czech Republic.
| | - Miloš Kubánek
- Institute for Clinical and Experimental Medicine, 140 21, Prague, Czech Republic
| | - Vojtěch Melenovský
- Institute for Clinical and Experimental Medicine, 140 21, Prague, Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, 166 10, Prague, Czech Republic.
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, 166 10, Prague, Czech Republic.
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2
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Chung HH, Huang P, Chen CL, Lee C, Hsu CC. Next-generation pathology practices with mass spectrometry imaging. MASS SPECTROMETRY REVIEWS 2023; 42:2446-2465. [PMID: 35815718 DOI: 10.1002/mas.21795] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 04/13/2022] [Accepted: 04/22/2022] [Indexed: 06/15/2023]
Abstract
Mass spectrometry imaging (MSI) is a powerful technique that reveals the spatial distribution of various molecules in biological samples, and it is widely used in pathology-related research. In this review, we summarize common MSI techniques, including matrix-assisted laser desorption/ionization and desorption electrospray ionization MSI, and their applications in pathological research, including disease diagnosis, microbiology, and drug discovery. We also describe the improvements of MSI, focusing on the accumulation of imaging data sets, expansion of chemical coverage, and identification of biological significant molecules, that have prompted the evolution of MSI to meet the requirements of pathology practices. Overall, this review details the applications and improvements of MSI techniques, demonstrating the potential of integrating MSI techniques into next-generation pathology practices.
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Affiliation(s)
- Hsin-Hsiang Chung
- Department of Chemistry, National Taiwan University, Taipei City, Taiwan
| | - Penghsuan Huang
- Department of Chemistry, National Taiwan University, Taipei City, Taiwan
| | - Chih-Lin Chen
- Department of Chemistry, National Taiwan University, Taipei City, Taiwan
| | - Chuping Lee
- Department of Chemistry, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Cheng-Chih Hsu
- Department of Chemistry, National Taiwan University, Taipei City, Taiwan
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3
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Chen H, Ma R, Zhang M. Recent Progress in Visualization and Analysis of Fingerprint Level 3 Features. ChemistryOpen 2022; 11:e202200091. [PMID: 35896949 PMCID: PMC9630047 DOI: 10.1002/open.202200091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 07/01/2022] [Indexed: 01/31/2023] Open
Abstract
Fingerprints provide sufficient and reliable discriminative characteristics which have been considered one of the most robust evidence for individualization. The limitation of current minutiae-based fingerprint technology seems to be solved with the development of level 3 features since they can offer additional information for problematic fingerprint recognition and even donor profiling. So far, tremendous efforts have been devoted to detecting and analysing the third-level details. This review summarizes the advances in level 3 details with an emphasis on their reliability assessment, visualization methods based on physical interaction, residue-response, mass spectrometry and electrochemical techniques, as well as the potentiality for individualization, donor profiling and even other application scenarios. In the end, we also give a personal perspective on the future direction and the remaining challenges in the third-level-detail-related field. We believe that the new exciting progress is expected in the development of level 3 detail detection and analysis with continued interest and attention to this field.
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Affiliation(s)
- Hongyu Chen
- Beijing Key Laboratory for Bioengineering and Sensing TechnologySchool of Chemistry and Biological EngineeringUniversity of Science and Technology Beijing30 Xueyuan RoadBeijing100083P.R. China
| | - Rongliang Ma
- Institute of Forensic ScienceMinistry of Public SecurityBeijing100038P. R. China
| | - Meiqin Zhang
- Beijing Key Laboratory for Bioengineering and Sensing TechnologySchool of Chemistry and Biological EngineeringUniversity of Science and Technology Beijing30 Xueyuan RoadBeijing100083P.R. China
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4
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Müller WH, Verdin A, De Pauw E, Malherbe C, Eppe G. Surface-assisted laser desorption/ionization mass spectrometry imaging: A review. MASS SPECTROMETRY REVIEWS 2022; 41:373-420. [PMID: 33174287 PMCID: PMC9292874 DOI: 10.1002/mas.21670] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/22/2020] [Accepted: 10/24/2020] [Indexed: 05/04/2023]
Abstract
In the last decades, surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS) has attracted increasing interest due to its unique capabilities, achievable through the nanostructured substrates used to promote the analyte desorption/ionization. While the most widely recognized asset of SALDI-MS is the untargeted analysis of small molecules, this technique also offers the possibility of targeted approaches. In particular, the implementation of SALDI-MS imaging (SALDI-MSI), which is the focus of this review, opens up new opportunities. After a brief discussion of the nomenclature and the fundamental mechanisms associated with this technique, which are still highly controversial, the analytical strategies to perform SALDI-MSI are extensively discussed. Emphasis is placed on the sample preparation but also on the selection of the nanosubstrate (in terms of chemical composition and morphology) as well as its functionalization possibilities for the selective analysis of specific compounds in targeted approaches. Subsequently, some selected applications of SALDI-MSI in various fields (i.e., biomedical, biological, environmental, and forensic) are presented. The strengths and the remaining limitations of SALDI-MSI are finally summarized in the conclusion and some perspectives of this technique, which has a bright future, are proposed in this section.
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Affiliation(s)
- Wendy H. Müller
- Mass Spectrometry Laboratory, MolSys Research Unit, Chemistry DepartmentUniversity of LiègeLiègeBelgium
| | - Alexandre Verdin
- Mass Spectrometry Laboratory, MolSys Research Unit, Chemistry DepartmentUniversity of LiègeLiègeBelgium
| | - Edwin De Pauw
- Mass Spectrometry Laboratory, MolSys Research Unit, Chemistry DepartmentUniversity of LiègeLiègeBelgium
| | - Cedric Malherbe
- Mass Spectrometry Laboratory, MolSys Research Unit, Chemistry DepartmentUniversity of LiègeLiègeBelgium
| | - Gauthier Eppe
- Mass Spectrometry Laboratory, MolSys Research Unit, Chemistry DepartmentUniversity of LiègeLiègeBelgium
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5
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Xu H, Zhang Z, Wang Y, Lu W, Min Q. Engineering of nanomaterials for mass spectrometry analysis of biomolecules. Analyst 2021; 146:5779-5799. [PMID: 34397044 DOI: 10.1039/d1an00860a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mass spectrometry (MS) based analysis has received intense attention in diverse biological fields. However, direct MS interrogation of target biomolecules in complex biological samples is still challenging, due to the extremely low abundance and poor ionization potency of target biological species. Innovations in nanomaterials create new auxiliary tools for deep and comprehensive MS characterization of biomolecules. More recently, growing research interest has been directed to the compositional and structural engineering of nanomaterials for enriching target biomolecules prior to MS analysis, enhancing the ionization efficiency in MS detection and designing biosensing nanoprobes in sensitive MS readout. In this review, we mainly focus on the recent advances in the engineering of nanomaterials towards their applications in sample pre-treatment, desorption/ionization matrices and ion signal amplification for MS profiling of biomolecules. This review will provide a toolbox of nanomaterials for researchers devoted to developing analytical methods and practical applications in the biological MS field.
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Affiliation(s)
- Hongmei Xu
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China. and Institute of Environmental Science, Shanxi University, Taiyuan 030006, P. R. China
| | - Zhenzhen Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Yihan Wang
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Weifeng Lu
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Qianhao Min
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
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Abstract
Mass spectrometry (MS) is an ideal tool for analyzing multiple types of (bio)molecular information simultaneously in complex biological systems. In addition, MS provides structural information on targets, and can easily discriminate between true analytes and background. Therefore, imaging mass spectrometry (IMS) enables not only visualization of tissues to give positional information on targets but also allows for molecular analysis of targets by affording the molecular weights. Matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) MS is particularly effective and is generally used for IMS. However, the requirement for an organic matrix raises several limitations that get in the way of accurate and reliable images and hampers imaging of small molecules such as drugs and their metabolites. To overcome these problems, various organic matrix-free LDI IMS systems have been developed, mostly utilizing nanostructured surfaces and inorganic nanoparticles as an alternative to the organic matrix. This minireview highlights and focuses on the progress in organic matrix-free LDI IMS and briefly discusses the use of other IMS techniques such as desorption electrospray ionization, laser ablation electrospray ionization, and secondary ion mass spectrometry.
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Affiliation(s)
- Eunjin Kim
- Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul 05029, Korea
| | - Jisu Kim
- Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul 05029, Korea
| | - Inseong Choi
- Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul 05029, Korea
| | - Jeongwook Lee
- Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul 05029, Korea
| | - Woon-Seok Yeo
- Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul 05029, Korea
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Kuwata K, Itou K, Kotani M, Ohmura T, Naito Y. DIUTHAME enables matrix-free mass spectrometry imaging of frozen tissue sections. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8729. [PMID: 31951673 DOI: 10.1002/rcm.8729] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 01/10/2020] [Accepted: 01/15/2020] [Indexed: 06/10/2023]
Abstract
RATIONALE A recently developed matrix-free laser desorption/ionization method, DIUTHAME (desorption ionization using through-hole alumina membrane), was examined for the feasibility of mass spectrometry imaging (MSI) applied to frozen tissue sections. The permeation behavior of DIUTHAME is potentially useful for MSI as positional information may not be distorted during the extraction of analytes from a sample. METHODS The through-hole porous alumina membranes used in the DIUTHAME chips were fabricated by wet anodization, were 5 μm thick, and had the desired values of 200 nm through-hole diameter and 50% open aperture ratio. Mouse brain frozen tissue sections on indium tin oxide (ITO)-coated slides were covered using the DIUTHAME chips and were subjected to MSI experiments in commercial time-of-flight mass spectrometers equipped with solid-state UV lasers after thawing and drying without matrix application. RESULT Mass spectra and mass images were successfully obtained from the frozen tissue sections using DIUTHAME as the ionization method. The mass spectra contained rich peaks in the phospholipid mass range free from the chemical background owing to there being no matrix-derived peaks in that range. DIUTHAME-MSI delivered high-quality mass images that reflected the anatomy of the brain tissue. CONCLUSIONS Analytes can be extracted from frozen tissue by capillary action of the through-holes in DIUTHAME and moisture contained in the tissue without distorting positional information of the analytes. The sample preparation for frozen tissue sections in DIUTHAME-MSI is simple, requiring no specialized skills or dedicated apparatus for matrix application. DIUTHAME can facilitate MSI at a low mass, as there is no interference from matrix-derived peaks, and should provide high-quality, reproducible mass images more easily than MALDI-MSI.
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Affiliation(s)
- Keiko Kuwata
- Nagoya University Institute of Transformative Bio-Molecules (WPI-ITbM), Furo-cho, Chikusa-ku, Nagoya, Japan
| | - Kayoko Itou
- Nagoya University Institute of Transformative Bio-Molecules (WPI-ITbM), Furo-cho, Chikusa-ku, Nagoya, Japan
| | | | | | - Yasuhide Naito
- The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsu-cho, Nishi-ku, Hamamatsu, Japan
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8
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Gas-aggregated Ag nanoparticles for detection of small molecules using LDI MS. Anal Bioanal Chem 2019; 412:1037-1047. [DOI: 10.1007/s00216-019-02329-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/30/2019] [Accepted: 12/04/2019] [Indexed: 01/04/2023]
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9
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He H, Guo Z, Wen Y, Xu S, Liu Z. Recent advances in nanostructure/nanomaterial-assisted laser desorption/ionization mass spectrometry of low molecular mass compounds. Anal Chim Acta 2019; 1090:1-22. [DOI: 10.1016/j.aca.2019.08.048] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/17/2019] [Accepted: 08/20/2019] [Indexed: 12/20/2022]
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10
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Mapping insoluble indole metabolites in the gastrointestinal environment of a murine colorectal cancer model using desorption/ionisation on porous silicon imaging. Sci Rep 2019; 9:12342. [PMID: 31451756 PMCID: PMC6710270 DOI: 10.1038/s41598-019-48533-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 07/26/2019] [Indexed: 12/19/2022] Open
Abstract
Indole derivatives are a structurally diverse group of compounds found in food, toxins, medicines, and produced by commensal microbiota. On contact with acidic stomach conditions, indoles undergo condensation to generate metabolites that vary in solubility, activity and toxicity as they move through the gut. Here, using halogenated ions, we map promising chemo-preventative indoles, i) 6-bromoisatin (6Br), ii) the mixed indole natural extract (NE) 6Br is found in, and iii) the highly insoluble metabolites formed in vivo using desorption/ionisation on porous silicon-mass spectrometry imaging (DIOS-MSI). The functionalised porous silicon architecture allowed insoluble metabolites to be detected that would otherwise evade most analytical platforms, providing direct evidence for identifying the therapeutic component, 6Br, from the mixed indole NE. As a therapeutic lead, 0.025 mg/g 6Br acts as a chemo-preventative compound in a 12 week genotoxic mouse model; at this dose 6Br significantly reduces epithelial cell proliferation, tumour precursors (aberrant crypt foci; ACF); and tumour numbers while having minimal effects on liver, blood biochemistry and weight parameters compared to controls. The same could not be said for the NE where 6Br originates, which significantly increased liver damage markers. DIOS-MSI revealed a large range of previously unknown insoluble metabolites that could contribute to reduced efficacy and increased toxicity.
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Hamdi A, Enjalbal C, Drobecq H, Boukherroub R, Melnyk O, Ezzaouia H, Coffinier Y. Fast and facile preparation of nanostructured silicon surfaces for laser desorption/ionization mass spectrometry of small compounds. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33 Suppl 1:66-74. [PMID: 30048019 DOI: 10.1002/rcm.8245] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE Many important biological processes rely on specific biomarkers (such as metabolites, drugs, proteins or peptides, carbohydrates, lipids, ...) that need to be monitored in various fluids (blood, plasma, urine, cell cultures, tissue homogenates, …). Although mass spectrometry (MS) hyphenated to liquid chromatography (LC) is widely accepted as a 'gold-standard' method for identifying such synthetic chemicals or biological products, their robust fast sensitive detection from complex matrices still constitutes a highly challenging matter. METHODS In order to circumvent the constraints intrinsic to LC/MS technology in terms of prior sample treatment, analysis time and overall method development to optimize ionization efficiency affecting the detection threshold, we investigated laser desorption/ionization mass spectrometry (LDI-MS) by directly depositing the sample under study onto cheap inert nanostructures made of silicon to perform straightforward sensitive and rapid screening of targeted low mass biomarkers on a conventional MALDI platform. RESULTS The investigated silicon nanostructures were found to act as very efficient ion-promoting surfaces exhibiting high performance for the detection of different classes of organic compounds, including glutathione, glucose, peptides and antibiotics. Achieving such broad detection was compulsory to develop a SALDI-MS-based pre-screening tool. CONCLUSIONS The key contribution of the described analytical strategy consists of designing inert surfaces that are fast (minute preparation) and cheap to produce, easy to handle and able to detect small organic compounds in matrix-free LDI-MS prerequisite for biomarkers pre-screening from body fluids without the recourse of any separation step.
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Affiliation(s)
- Abderrahmane Hamdi
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, IEMN, UMR CNRS 8520, Avenue Poincaré, BP 60069, 59652, Villeneuve d'Ascq, France
- Laboratory of Semi-conductors, Nano-structures and Advanced Technologies, Research and Technology Centre of Energy, Borj-Cedria Science and Technology Park, BP 95, 2050, Hammam-Lif, Tunisia
- Faculty of Science of Bizerte, University of Carthage, 7021, Zarzouna, Tunisia
| | - Christine Enjalbal
- Univ. Montpellier, Institut des Biomolécules Max Mousseron, Place Eugène Bataillon, 34095, Montpellier, France
| | - Hervé Drobecq
- Institut de biologie de Lille, UMR CNRS 8160, 59000, Lille, France
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, IEMN, UMR CNRS 8520, Avenue Poincaré, BP 60069, 59652, Villeneuve d'Ascq, France
| | - Oleg Melnyk
- Institut de biologie de Lille, UMR CNRS 8160, 59000, Lille, France
| | - Hatem Ezzaouia
- Laboratory of Semi-conductors, Nano-structures and Advanced Technologies, Research and Technology Centre of Energy, Borj-Cedria Science and Technology Park, BP 95, 2050, Hammam-Lif, Tunisia
| | - Yannick Coffinier
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, IEMN, UMR CNRS 8520, Avenue Poincaré, BP 60069, 59652, Villeneuve d'Ascq, France
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12
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Ràfols P, Vilalta D, Torres S, Calavia R, Heijs B, McDonnell LA, Brezmes J, del Castillo E, Yanes O, Ramírez N, Correig X. Assessing the potential of sputtered gold nanolayers in mass spectrometry imaging for metabolomics applications. PLoS One 2018; 13:e0208908. [PMID: 30540827 PMCID: PMC6291137 DOI: 10.1371/journal.pone.0208908] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 11/26/2018] [Indexed: 12/20/2022] Open
Abstract
Mass spectrometry imaging (MSI) is a molecular imaging technique that maps the distribution of molecules in biological tissues with high spatial resolution. The most widely used MSI modality is matrix-assisted laser desorption/ionization (MALDI), mainly due to the large variety of analyte classes amenable for MALDI analysis. However, the organic matrices used in classical MALDI may impact the quality of the molecular images due to limited lateral resolution and strong background noise in the low mass range, hindering its use in metabolomics. Here we present a matrix-free laser desorption/ionization (LDI) technique based on the deposition of gold nanolayers on tissue sections by means of sputter-coating. This gold coating method is quick, fully automated, reproducible, and allows growing highly controlled gold nanolayers, necessary for high quality and high resolution MS image acquisition. The performance of the developed method has been tested through the acquisition of MS images of brain tissues. The obtained spectra showed a high number of MS peaks in the low mass region (m/z below 1000 Da) with few background peaks, demonstrating the ability of the sputtered gold nanolayers of promoting the desorption/ionization of a wide range of metabolites. These results, together with the reliable MS spectrum calibration using gold peaks, make the developed method a valuable alternative for MSI applications.
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Affiliation(s)
- Pere Ràfols
- Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- * E-mail: (PR); (NR)
| | - Dídac Vilalta
- Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Sònia Torres
- Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
| | - Raul Calavia
- Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
| | - Bram Heijs
- Center for Proteomics & Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - Liam A. McDonnell
- Center for Proteomics & Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
- Department of Pathology, Leiden University Medical Center, Leiden The Netherlands
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - Jesús Brezmes
- Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Esteban del Castillo
- Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
| | - Oscar Yanes
- Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Noelia Ramírez
- Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Institut d’Investigació Sanitària Pere Virgili, Tarragona, Spain
- * E-mail: (PR); (NR)
| | - Xavier Correig
- Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Institut d’Investigació Sanitària Pere Virgili, Tarragona, Spain
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13
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Ràfols P, Castillo ED, Yanes O, Brezmes J, Correig X. Novel automated workflow for spectral alignment and mass calibration in MS imaging using a sputtered Ag nanolayer. Anal Chim Acta 2018; 1022:61-69. [DOI: 10.1016/j.aca.2018.03.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/12/2018] [Accepted: 03/20/2018] [Indexed: 02/06/2023]
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14
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Palermo A, Forsberg EM, Warth B, Aisporna AE, Billings E, Kuang E, Benton HP, Berry D, Siuzdak G. Fluorinated Gold Nanoparticles for Nanostructure Imaging Mass Spectrometry. ACS NANO 2018; 12:6938-6948. [PMID: 29966083 DOI: 10.1021/acsnano.8b02376] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Nanostructure imaging mass spectrometry (NIMS) with fluorinated gold nanoparticles (f-AuNPs) is a nanoparticle assisted laser desorption/ionization approach that requires low laser energy and has demonstrated high sensitivity. Here we describe NIMS with f-AuNPs for the comprehensive analysis of metabolites in biological tissues. F-AuNPs assist in desorption/ionization by laser-induced release of the fluorocarbon chains with minimal background noise. Since the energy barrier required to release the fluorocarbons from the AuNPs is minimal, the energy of the laser is maintained in the low μJ/pulse range, thus limiting metabolite in-source fragmentation. Electron microscopy analysis of tissue samples after f-AuNP NIMS shows a distinct "raising" of the surface as compared to matrix assisted laser desorption ionization ablation, indicative of a gentle desorption mechanism aiding in the generation of intact molecular ions. Moreover, the use of perfluorohexane to distribute the f-AuNPs on the tissue creates a hydrophobic environment minimizing metabolite solubilization and spatial dislocation. The transfer of the energy from the incident laser to the analytes through the release of the fluorocarbon chains similarly enhances the desorption/ionization of metabolites of different chemical nature, resulting in heterogeneous metabolome coverage. We performed the approach in a comparative study of the colon of mice exposed to three different diets. F-AuNP NIMS allows the direct detection of carbohydrates, lipids, bile acids, sulfur metabolites, amino acids, nucleotide precursors as well as other small molecules of varied biological origins. Ultimately, the diversified molecular coverage obtained provides a broad picture of a tissue's metabolic organization.
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Affiliation(s)
- Amelia Palermo
- Scripps Center for Metabolomics , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States
| | - Erica M Forsberg
- Department of Chemistry and Biochemistry , San Diego State University , 5500 Campanile Drive , San Diego , California 92182 , United States
| | - Benedikt Warth
- Department of Food Chemistry and Toxicology, Faculty of Chemistry and Vienna Metabolomics Center (VIME) , University of Vienna , Währingerstraße 38 , 1090 Vienna , Austria
| | - Aries E Aisporna
- Scripps Center for Metabolomics , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States
| | - Elizabeth Billings
- Scripps Center for Metabolomics , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States
| | - Ellen Kuang
- Department of Chemistry and Biochemistry , San Diego State University , 5500 Campanile Drive , San Diego , California 92182 , United States
| | - H Paul Benton
- Scripps Center for Metabolomics , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States
| | - David Berry
- Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, Research Network Chemistry Meets Microbiology , University of Vienna , Althanstraße 14 , 1090 Vienna , Austria
| | - Gary Siuzdak
- Scripps Center for Metabolomics , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States
- Department of Chemistry, Molecular and Computational Biology , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States
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15
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Ràfols P, Vilalta D, Brezmes J, Cañellas N, Del Castillo E, Yanes O, Ramírez N, Correig X. Signal preprocessing, multivariate analysis and software tools for MA(LDI)-TOF mass spectrometry imaging for biological applications. MASS SPECTROMETRY REVIEWS 2018; 37:281-306. [PMID: 27862147 DOI: 10.1002/mas.21527] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 10/11/2016] [Indexed: 06/06/2023]
Abstract
Mass spectrometry imaging (MSI) is a label-free analytical technique capable of molecularly characterizing biological samples, including tissues and cell lines. The constant development of analytical instrumentation and strategies over the previous decade makes MSI a key tool in clinical research. Nevertheless, most MSI studies are limited to targeted analysis or the mere visualization of a few molecular species (proteins, peptides, metabolites, or lipids) in a region of interest without fully exploiting the possibilities inherent in the MSI technique, such as tissue classification and segmentation or the identification of relevant biomarkers from an untargeted approach. MSI data processing is challenging due to several factors. The large volume of mass spectra involved in a MSI experiment makes choosing the correct computational strategies critical. Furthermore, pixel to pixel variation inherent in the technique makes choosing the correct preprocessing steps critical. The primary aim of this review was to provide an overview of the data-processing steps and tools that can be applied to an MSI experiment, from preprocessing the raw data to the more advanced strategies for image visualization and segmentation. This review is particularly aimed at researchers performing MSI experiments and who are interested in incorporating new data-processing features, improving their computational strategy, and/or desire access to data-processing tools currently available. © 2016 Wiley Periodicals, Inc. Mass Spec Rev 37:281-306, 2018.
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Affiliation(s)
- Pere Ràfols
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders (CIBERDEM), C/Monforte de Lemos 3-5, Madrid, 28029, Spain
- Department of Electronic Engineering, Institute of Health Research Pere Virgili, Rovira i Virgili University, IISPV, Avinguda Països Catalans 26, Tarragona, 43007, Spain
| | - Dídac Vilalta
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders (CIBERDEM), C/Monforte de Lemos 3-5, Madrid, 28029, Spain
- Department of Electronic Engineering, Institute of Health Research Pere Virgili, Rovira i Virgili University, IISPV, Avinguda Països Catalans 26, Tarragona, 43007, Spain
| | - Jesús Brezmes
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders (CIBERDEM), C/Monforte de Lemos 3-5, Madrid, 28029, Spain
- Department of Electronic Engineering, Institute of Health Research Pere Virgili, Rovira i Virgili University, IISPV, Avinguda Països Catalans 26, Tarragona, 43007, Spain
| | - Nicolau Cañellas
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders (CIBERDEM), C/Monforte de Lemos 3-5, Madrid, 28029, Spain
- Department of Electronic Engineering, Institute of Health Research Pere Virgili, Rovira i Virgili University, IISPV, Avinguda Països Catalans 26, Tarragona, 43007, Spain
| | - Esteban Del Castillo
- Department of Electronic Engineering, Institute of Health Research Pere Virgili, Rovira i Virgili University, IISPV, Avinguda Països Catalans 26, Tarragona, 43007, Spain
| | - Oscar Yanes
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders (CIBERDEM), C/Monforte de Lemos 3-5, Madrid, 28029, Spain
- Department of Electronic Engineering, Institute of Health Research Pere Virgili, Rovira i Virgili University, IISPV, Avinguda Països Catalans 26, Tarragona, 43007, Spain
| | - Noelia Ramírez
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders (CIBERDEM), C/Monforte de Lemos 3-5, Madrid, 28029, Spain
- Department of Electronic Engineering, Institute of Health Research Pere Virgili, Rovira i Virgili University, IISPV, Avinguda Països Catalans 26, Tarragona, 43007, Spain
| | - Xavier Correig
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders (CIBERDEM), C/Monforte de Lemos 3-5, Madrid, 28029, Spain
- Department of Electronic Engineering, Institute of Health Research Pere Virgili, Rovira i Virgili University, IISPV, Avinguda Països Catalans 26, Tarragona, 43007, Spain
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16
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Skriba A, Havlicek V. Mass spectrometry imaging of illicit drugs in latent fingerprints by matrix-free and matrix-assisted desorption/ionization techniques. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2018; 24:124-128. [PMID: 29232991 DOI: 10.1177/1469066717728007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Compared with classical matrix-assisted laser-desorption ionization mass spectrometry (MALDI), the matrix free-based strategies generate a cleaner background, without significant noise or interference coming from an applied matrix, which is beneficial for the analysis of small molecules, such as drugs of abuse. In this work, we probed the detection efficiency of methamphetamine, heroin and cocaine in nanostructure-assisted laser desorption-ionization (NALDI) and desorption electrospray ionization and compared the sensitivity of these two matrix-free tools with a standard MALDI mass spectrometry experiment. In a typical mass spectrometry imaging (MSI) setup, papillary line latent fingerprints were recorded as a mixture a common skin fatty acid or interfering cosmetics with a drug. In a separate experiment, all drugs (1 µL of 1 μM standard solution) were detected by all three ionization techniques on a target. In the case of cocaine and heroin, NALDI mass spectrometry was the most sensitive and revealed signals even from 0.1 μM solution. The drug/drug contaminant (fatty acid or cosmetics) MSI approach could be used by law enforcement personnel to confirm drug abusers of having come into contact with the suspected drug by use of fingerprint scans at time of apprehension which can aid in reducing the work of lab officials.
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Affiliation(s)
- Anton Skriba
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the CAS, Prague, Czech Republic
| | - Vladimir Havlicek
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the CAS, Prague, Czech Republic
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17
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Gustafsson OJR, Guinan TM, Rudd D, Kobus H, Benkendorff K, Voelcker NH. Metabolite mapping by consecutive nanostructure and silver-assisted mass spectrometry imaging on tissue sections. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2017; 31:991-1000. [PMID: 28370605 DOI: 10.1002/rcm.7869] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 03/11/2017] [Accepted: 03/28/2017] [Indexed: 06/07/2023]
Abstract
RATIONALE Nanostructure-based mass spectrometry imaging (MSI) is a promising technology for molecular imaging of small molecules, without the complex chemical background typically encountered in matrix-assisted molecular imaging approaches. Here, we have enhanced these surfaces with silver (Ag) to provide a second tier of MSI data from a single sample. METHODS MSI data was acquired through the application of laser desorption/ionization mass spectrometry to biological samples imprinted onto desorption/ionization on silicon (DIOS) substrates. Following initial analysis, ultra-thin Ag layers were overlaid onto the followed by MSI analysis (Ag-DIOS MSI). This approach was first demonstrated for fingermark small molecules including environmental contaminants and sebum components. Subsequently, this bimodal method was translated to lipids and metabolites in fore-stomach sections from a 6-bromoisatin chemopreventative murine mouse model. RESULTS DIOS MSI allowed mapping of common ions in fingermarks as well as 6-bromoisatin metabolites and lipids in murine fore-stomach. Furthermore, DIOS MSI was complemented by the Ag-DIOS MSI of Ag-adductable lipids such as wax esters in fingermarks and cholesterol in murine fore-stomach. Gastrointestinal acid condensation products of 6-bromoisatin, such as the 6,6'-dibromoindirubin mapped herein, are very challenging to isolate and characterize. By re-analyzing the same tissue imprints, this metabolite was readily detected by DIOS, placed in a tissue-specific spatial context, and subsequently overlaid with additional lipid distributions acquired using Ag-DIOS MSI. CONCLUSIONS The ability to place metabolite and lipid classes in a tissue-specific context makes this novel method suited to MSI analyses where the collection of additional information from the same sample maximises resource use, and also maximises the number of annotated small molecules, in particular for metabolites that are typically undetectable with traditional platforms. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- O J R Gustafsson
- Australian Research Council Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, Australia, 5095
| | - T M Guinan
- Australian Research Council Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, Australia, 5095
| | - D Rudd
- School of Environment, Science and Engineering, Southern Cross University, Lismore, New South Wales, Australia, 2480
| | - H Kobus
- School of Chemical and Physical Sciences, Flinders University, Bedford Park, South Australia, Australia, 5042
| | - K Benkendorff
- School of Environment, Science and Engineering, Southern Cross University, Lismore, New South Wales, Australia, 2480
| | - N H Voelcker
- Australian Research Council Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, Australia, 5095
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18
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A mass spectrometry-based forensic toolbox for imaging and detecting biological fluid evidence in finger marks and fingernail scrapings. Int J Legal Med 2017; 131:1413-1422. [DOI: 10.1007/s00414-017-1587-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 04/03/2017] [Indexed: 11/26/2022]
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19
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Francese S, Bradshaw R, Denison N. An update on MALDI mass spectrometry based technology for the analysis of fingermarks – stepping into operational deployment. Analyst 2017. [DOI: 10.1039/c7an00569e] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Expanded range of retrievable intelligence from fingermarksviaMALDI MS based methods and increased operational capabilities of the technology.
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Affiliation(s)
- S. Francese
- Centre for Mass Spectrometry Imaging
- Biomolecular Research Centre
- Sheffield Hallam University
- Sheffield
- UK
| | - R. Bradshaw
- Centre for Mass Spectrometry Imaging
- Biomolecular Research Centre
- Sheffield Hallam University
- Sheffield
- UK
| | - N. Denison
- Identification Services Yorkshire and the Humber Region
- Wakefield
- UK WF27UA
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20
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Guinan TM, Abdelmaksoud H, Voelcker NH. Rapid detection of nicotine from breath using desorption ionisation on porous silicon. Chem Commun (Camb) 2017; 53:5224-5226. [DOI: 10.1039/c7cc00243b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Desorption ionisation on porous silicon mass spectrometry was used for the detection of nicotine from exhaled breath.
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Affiliation(s)
- T. M. Guinan
- Future Industries Institute
- University of South Australia
- Adelaide
- Australia
- Monash Institute of Pharmaceutical Sciences
| | - H. Abdelmaksoud
- Future Industries Institute
- University of South Australia
- Adelaide
- Australia
- Monash Institute of Pharmaceutical Sciences
| | - N. H. Voelcker
- Future Industries Institute
- University of South Australia
- Adelaide
- Australia
- Monash Institute of Pharmaceutical Sciences
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21
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Picca RA, Calvano CD, Lo Faro MJ, Fazio B, Trusso S, Ossi PM, Neri F, D'Andrea C, Irrera A, Cioffi N. Functionalization of silicon nanowire arrays by silver nanoparticles for the laser desorption ionization mass spectrometry analysis of vegetable oils. JOURNAL OF MASS SPECTROMETRY : JMS 2016; 51:849-856. [PMID: 27476797 DOI: 10.1002/jms.3826] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 07/15/2016] [Accepted: 07/25/2016] [Indexed: 06/06/2023]
Abstract
In this work, novel hybrid nanostructured surfaces, consisting of dense arrays of silicon nanowires (SiNWs) functionalized by Ag nanoparticles (AgNP/SiNWs), were used for the laser desorption/ionization time-of-flight mass spectrometry (LDI-TOF MS) analysis of some typical unsaturated food components (e.g. squalene, oleic acid) to assess their MS performance. The synthesis of the novel platforms is an easy, cost-effective process based on the maskless wet-etching preparation at room temperature of SiNWs followed by their decoration with AgNPs, produced by pulsed laser deposition. No particular surface pretreatment or addition of organic matrixes/ionizers was necessary. Moreover, oil extracts (e.g. extra virgin olive oil, peanut oil) could be investigated on AgNP/SiNWs surfaces, revealing their different MS profiles. It was shown that such substrates operate at reduced laser energy, typically generating intense silver cluster ions and analyte adducts. A comparison with bare SiNWs was also performed, indicating the importance of AgNP density on NW surface. In this case, desorption/ionization on silicon was invoked as probable LDI mechanism. Finally, the influence of SiNW length and surface composition on MS results was assessed. The combination of typical properties of SiNWs (hydrophobicity, antireflectivity) with ionization ability of metal NPs can be a valid methodology for the further development of nanostructured surfaces in LDI-TOF MS applications. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Rosaria Anna Picca
- Dipartimento di Chimica, Università degli Studi Bari 'Aldo Moro', Via E. Orabona 4, 70126, Bari, Italy
| | - Cosima Damiana Calvano
- Dipartimento di Chimica, Università degli Studi Bari 'Aldo Moro', Via E. Orabona 4, 70126, Bari, Italy
| | - Maria Josè Lo Faro
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, V. le F. Stagno D'Alcontres 37, 98158, Messina, Italy
- MATIS CNR-IMM, Istituto per la Microelettronica e Microsistemi, Via Santa Sofia 64, 95123, Catania, Italy
| | - Barbara Fazio
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, V. le F. Stagno D'Alcontres 37, 98158, Messina, Italy
| | - Sebastiano Trusso
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, V. le F. Stagno D'Alcontres 37, 98158, Messina, Italy
| | - Paolo Maria Ossi
- Dipartimento di Energia and Center for NanoEngineered Materials and Surfaces-NEMAS, Politecnico di Milano, Milano, Italy
| | - Fortunato Neri
- Dipartimento di Scienze matematiche e informatiche, scienze fisiche e scienze della terra, Università degli Studi di Messina, Messina, Italy
| | - Cristiano D'Andrea
- MATIS CNR-IMM, Istituto per la Microelettronica e Microsistemi, Via Santa Sofia 64, 95123, Catania, Italy
| | - Alessia Irrera
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, V. le F. Stagno D'Alcontres 37, 98158, Messina, Italy
| | - Nicola Cioffi
- Dipartimento di Chimica, Università degli Studi Bari 'Aldo Moro', Via E. Orabona 4, 70126, Bari, Italy
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22
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Guinan TM, Neldner D, Stockham P, Kobus H, Della Vedova CB, Voelcker NH. Porous silicon mass spectrometry as an alternative confirmatory assay for compliance testing of methadone. Drug Test Anal 2016; 9:769-777. [PMID: 27364015 DOI: 10.1002/dta.2033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/20/2016] [Accepted: 06/22/2016] [Indexed: 11/07/2022]
Abstract
Porous silicon based surface-assisted laser desorption ionization mass spectrometry (pSi SALDI-MS) is an analytical technique well suited for high throughput analysis of low molecular weight compounds from biological samples. A potential application of this technology is the compliance monitoring of opioid addiction programmes, where methadone is used as a pharmacological treatment for drugs such as heroin. Here, we present the detection and quantification of methadone and 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP) from water and clinical samples (saliva, urine, and plasma) from opioid dependent participants using pSi SALDI-MS. A one-step solvent phase extraction using chloroform was developed for the detection of methadone from clinical samples for analysis by pSi SALDI-MS. Liquid chromatography-mass spectrometry (LC-MS) was used as a comparative technique for the quantification of methadone from clinical saliva and plasma samples. In all cases, we obtained a good correlation of pSi SALDI-MS and LC-MS results, suggesting that pSi SALDI-MS may be an alternative procedure for high-throughput screening and quantification for application in opioid compliance testing. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Taryn M Guinan
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Mawson Institute, Australia.,Future Industries Institute, University of South Australia, Adelaide, South Australia, Australia
| | - Declan Neldner
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - Peter Stockham
- Forensic Science SA, Adelaide, South Australia, Australia
| | - Hilton Kobus
- School of Chemical and Physical Sciences, Flinders University, Bedford Park, South Australia, Australia
| | - Christopher B Della Vedova
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - Nicolas H Voelcker
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Mawson Institute, Australia.,Future Industries Institute, University of South Australia, Adelaide, South Australia, Australia
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23
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Schnapp A, Niehoff AC, Koch A, Dreisewerd K. Laser desorption/ionization mass spectrometry of lipids using etched silver substrates. Methods 2016; 104:194-203. [DOI: 10.1016/j.ymeth.2016.01.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/13/2016] [Accepted: 01/25/2016] [Indexed: 10/22/2022] Open
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24
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Guinan TM, Kobus H, Lu Y, Sweetman M, McInnes SJP, Kirkbride KP, Voelcker NH. Nanostructured Silicon-Based Fingerprint Dusting Powders for Enhanced Visualization and Detection by Mass Spectrometry. Chempluschem 2016; 81:258-261. [PMID: 31968783 DOI: 10.1002/cplu.201500546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 01/07/2016] [Indexed: 02/04/2023]
Abstract
Porous silicon microparticles (pSi MPs) functionalized with fluorescent dyes (lissamine and carboxy-5-fluorescein) and intrinsically luminescent pSi MPs were explored as novel fingerprint dusting powders. The versatility of luminescent pSi MPs is demonstrated through time-gated imaging of their long-lived (lifetime>28 μs) near-IR emission, and mass spectrometry analysis of fingerprints dusted with luminescent pSi MPs to provide further information on exogenous small molecules present in latent fingerprints.
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Affiliation(s)
- Taryn M Guinan
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Hilton Kobus
- School of Physical and Chemical Sciences, Flinders University, Bedford Park, SA, 5042, Australia
| | - Yiqing Lu
- Department of Physics and Astronomy, Faculty of Science and Engineering, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Martin Sweetman
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Steven J P McInnes
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - K Paul Kirkbride
- School of Physical and Chemical Sciences, Flinders University, Bedford Park, SA, 5042, Australia
| | - Nicolas H Voelcker
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
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