1
|
Sohn AL, Bowman AP, Barnes MM, Kullman SW, Muddiman DC. Oversampling for Enhanced Spatial Resolution of Zebrafish by Top-Hat IR-MALDESI-MSI. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1959-1968. [PMID: 38985437 DOI: 10.1021/jasms.4c00219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Mass spectrometry imaging (MSI) has become a significant tool for measuring chemical species in biological tissues, where much of the impact of these platforms lies in their capability to report the spatial distribution of analytes for correlation to sample morphology. As a result, enhancement of spatial resolution has become a frontier of innovation in the field, and necessary developments are dependent on the ionization source. More particularly, laser-based imaging sources may require modifications to the optical train or alternative sampling techniques. These challenges are heightened for systems with infrared (IR) lasers, as their operating wavelength generates spot sizes that are inherently larger than their ultraviolet counterparts. Recently, the infrared matrix-assisted laser desorption electrospray ionization (IR-MALDESI) source has shown the utility of a diffractive optical element (DOE) to produce square ablation patterns, termed top-hat IR-MALDESI. If the DOE optic is combined with oversampling methods, smaller ablation volumes can be sampled to render higher spatial resolution imaging experiments. Further, this approach enables reproducible spot sizes and ablation volumes for better comparison between scans. Herein, we investigate the utility of oversampling with top-hat IR-MALDESI to enhance the spatial resolution of measured lipids localized within the head of sectioned zebrafish tissue. Four different spatial resolutions were evaluated for data quality (e.g., mass measurement accuracy, spectral accuracy) and quantity of annotations. Other experimental parameters to consider for high spatial resolution imaging are also discussed. Ultimately, 20 μm spatial resolution was achieved in this work and supports feasibility for use in future IR-MALDESI studies.
Collapse
Affiliation(s)
- Alexandria L Sohn
- FTMS Laboratory for Human Health Research, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | | | - Morgan M Barnes
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Seth W Kullman
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - David C Muddiman
- FTMS Laboratory for Human Health Research, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| |
Collapse
|
2
|
Kenderdine T, Fabris D. The multifaceted roles of mass spectrometric analysis in nucleic acids drug discovery and development. MASS SPECTROMETRY REVIEWS 2023; 42:1332-1357. [PMID: 34939674 PMCID: PMC9218015 DOI: 10.1002/mas.21766] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/23/2021] [Accepted: 11/22/2021] [Indexed: 06/07/2023]
Abstract
The deceptively simple concepts of mass determination and fragment analysis are the basis for the application of mass spectrometry (MS) to a boundless range of analytes, including fundamental components and polymeric forms of nucleic acids (NAs). This platform affords the intrinsic ability to observe first-hand the effects of NA-active drugs on the chemical structure, composition, and conformation of their targets, which might affect their ability to interact with cognate NAs, proteins, and other biomolecules present in a natural environment. The possibility of interfacing with high-performance separation techniques represents a multiplying factor that extends these capabilities to cover complex sample mixtures obtained from organisms that were exposed to NA-active drugs. This report provides a brief overview of these capabilities in the context of the analysis of the products of NA-drug activity and NA therapeutics. The selected examples offer proof-of-principle of the applicability of this platform to all phases of the journey undertaken by any successful NA drug from laboratory to bedside, and provide the rationale for its rapid expansion outside traditional laboratory settings in support to ever growing manufacturing operations.
Collapse
Affiliation(s)
| | - Dan Fabris
- Department of Chemistry, University of Connecticut
| |
Collapse
|
3
|
Schneemann J, Schäfer KC, Spengler B, Heiles S. IR-MALDI Mass Spectrometry Imaging with Plasma Post-Ionization of Nonpolar Metabolites. Anal Chem 2022; 94:16086-16094. [DOI: 10.1021/acs.analchem.2c03247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Julian Schneemann
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany
| | | | - Bernhard Spengler
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany
| | - Sven Heiles
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Otto-Hahn-Straße 6b, 44139 Dortmund, Germany
- Lipidomics, Faculty of Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
| |
Collapse
|
4
|
Li D, Yi J, Han G, Qiao L. MALDI-TOF Mass Spectrometry in Clinical Analysis and Research. ACS MEASUREMENT SCIENCE AU 2022; 2:385-404. [PMID: 36785658 PMCID: PMC9885950 DOI: 10.1021/acsmeasuresciau.2c00019] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/15/2022] [Accepted: 07/15/2022] [Indexed: 05/04/2023]
Abstract
In the decade after being awarded the Nobel Prize in Chemistry in 2002, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) has been widely used as an analytical chemistry tool for the detection of large and small molecules (e.g., polymers, proteins, peptides, nucleic acids, amino acids, lipids, etc.) and for clinical analysis and research (e.g., pathogen identification, genetic disorders screening, cancer diagnosis, etc.). In view of the fast development of MALDI-TOF MS in clinical usage, this review systematically summarizes the most important applications of MALDI-TOF MS in clinical analysis and research by analyzing MALDI TOF MS-related reviews collected in the Web of Science database. On the basis of the analysis of keyword co-occurrence of over 2000 review articles, four themes consisting of "pathogen identification", "disease diagnosis", "nucleic acids analysis", and "small molecules analysis" were found. For each theme, the review further outlined their application implications, analytical methods, and systems as well as limitations that need to be addressed. Overall, the review summarizes and elaborates on the clinical applications of MALDI-TOF MS, providing a comprehensive picture for researchers embarking on MALDI TOF MS-related clinical analysis and research.
Collapse
|
5
|
Kibbe RR, Mellinger AL, Muddiman DC. Novel matrix strategies for improved ionization and spatial resolution using IR-MALDESI mass spectrometry imaging. JOURNAL OF MASS SPECTROMETRY : JMS 2022; 57:e4875. [PMID: 35900350 PMCID: PMC9541679 DOI: 10.1002/jms.4875] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 05/10/2023]
Abstract
In mass spectrometry imaging (MSI) applications of infrared matrix-assisted laser desorption electrospray ionization (IR-MALDESI), an exogenous ice layer is the gold standard for an energy-absorbing matrix. However, the formation of the ice matrix requires additional time and instrument hardware, so glycerol was investigated herein as an alternative to the ice matrix to potentially improve spatial resolution and ionization, while decreasing experiment time. Glycerol solutions of varying concentrations were sprayed over top of rat liver tissue sections for analysis by IR-MALDESI and compared to the typical ice matrix condition. Additionally, we tested if combining the ice matrix and glycerol matrix would further improve analyses. Matrix conditions were evaluated by comparing ion abundance of six lipid species, the laser ablation spot diameter, and number of METASPACE annotations. The ion abundances were also normalized to the volume of tissue ablated to correct for lower abundance values due to less ablated tissue. It was observed that utilizing a 50% glycerol matrix without ice provides improved spatial resolution with lipid abundances and annotations comparable to the ice matrix standard, while decreasing the time required to complete an IR-MALDESI tissue imaging experiment.
Collapse
Affiliation(s)
- Russell R. Kibbe
- FTMS Laboratory for Human Health Research, Department of ChemistryNorth Carolina State UniversityRaleighNorth CarolinaUSA
| | - Allyson L. Mellinger
- FTMS Laboratory for Human Health Research, Department of ChemistryNorth Carolina State UniversityRaleighNorth CarolinaUSA
| | - David C. Muddiman
- FTMS Laboratory for Human Health Research, Department of ChemistryNorth Carolina State UniversityRaleighNorth CarolinaUSA
- Molecular Education, Technology and Research Innovation Center (METRIC)North Carolina State UniversityRaleighNorth CarolinaUSA
| |
Collapse
|
6
|
Melzer ME, Sweedler JV, Clark KD. Rapid Determination of RNA Modifications in Consensus Motifs by Nuclease Protection with Ion-Tagged Oligonucleotide Probes and Matrix-Assisted Laser Desorption Ionization Mass Spectrometry. Genes (Basel) 2022; 13:1008. [PMID: 35741770 PMCID: PMC9222981 DOI: 10.3390/genes13061008] [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: 04/20/2022] [Revised: 05/24/2022] [Accepted: 05/31/2022] [Indexed: 12/10/2022] Open
Abstract
The reversible and substoichiometric modification of RNA has recently emerged as an additional layer of translational regulation in normal biological function and disease. Modifications are often enzymatically deposited in and removed from short (~5 nt) consensus motif sequences to carefully control the translational output of the cell. Although characterization of modification occupancy at consensus motifs can be accomplished using RNA sequencing methods, these approaches are generally time-consuming and do not directly detect post-transcriptional modifications. Here, we present a nuclease protection assay coupled with matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS) to rapidly characterize modifications in consensus motifs, such as GGACU, which frequently harbor N6-methyladenosine (m6A). While conventional nuclease protection methods rely on long (~30 nt) oligonucleotide probes that preclude the global assessment of consensus motif modification stoichiometry, we investigated a series of ion-tagged oligonucleotide (ITO) probes and found that a benzylimidazolium-functionalized ITO (ABzIM-ITO) conferred significantly improved nuclease resistance for GGACU targets. After optimizing the conditions of the nuclease protection assay, we applied the ITO and MALDI-MS-based method for determining the stoichiometry of GG(m6A)CU and GGACU in RNA mixtures. Overall, the ITO-based nuclease protection and MALDI-MS method constitutes a rapid and promising approach for determining modification stoichiometries of consensus motifs.
Collapse
Affiliation(s)
- Madeline E. Melzer
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (M.E.M.); (J.V.S.)
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jonathan V. Sweedler
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (M.E.M.); (J.V.S.)
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Kevin D. Clark
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| |
Collapse
|
7
|
Płaza A, Kołodziej A, Nizioł J, Ruman T. Laser Ablation Synthesis in Solution and Nebulization of Silver-109 Nanoparticles for Mass Spectrometry and Mass Spectrometry Imaging. ACS MEASUREMENT SCIENCE AU 2022; 2:14-22. [PMID: 36785587 PMCID: PMC9885948 DOI: 10.1021/acsmeasuresciau.1c00020] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Preparation of monoisotopic silver-109 nanoparticles (109AgNPs) by pulsed fiber laser (PFL) ablation synthesis in solution (LASiS) with the use of a 2D galvoscanner (2D GS) is described. The procedure of covering of custom-made stainless-steel MALDI targets containing studied objects via nebulization is also presented. Examples of application of the new method (PFL-2D GS LASiS and nebulization) in mass spectrometry (MS) analyses and MS imaging (MSI) are shown. These include tests with a nonionic nucleoside and saccharide, ionic amino acids, and also a low-molecular-weight polymer. Fingerprint MS imaging is shown as an example of a fast and simple MSI procedure.
Collapse
Affiliation(s)
- Aneta Płaza
- Doctoral
School of Engineering and Technical Sciences at the Rzeszów
University of Technology, 8 Powstańców Warszawy Ave., Rzeszów 35-959, Poland
| | - Artur Kołodziej
- Doctoral
School of Engineering and Technical Sciences at the Rzeszów
University of Technology, 8 Powstańców Warszawy Ave., Rzeszów 35-959, Poland
| | - Joanna Nizioł
- Rzeszów
University of Technology, Faculty of Chemistry,
Inorganic and Analytical Chemistry Department, 6 Powstańców Warszawy Ave., 35-959 Rzeszów, Poland
| | - Tomasz Ruman
- Rzeszów
University of Technology, Faculty of Chemistry,
Inorganic and Analytical Chemistry Department, 6 Powstańców Warszawy Ave., 35-959 Rzeszów, Poland
| |
Collapse
|
8
|
Arendowski A, Ossoliński K, Ossolińska A, Ossoliński T, Nizioł J, Ruman T. Serum and urine analysis with gold nanoparticle-assisted laser desorption/ionization mass spectrometry for renal cell carcinoma metabolic biomarkers discovery. Adv Med Sci 2021; 66:326-335. [PMID: 34273747 DOI: 10.1016/j.advms.2021.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/02/2021] [Accepted: 07/06/2021] [Indexed: 12/24/2022]
Abstract
PURPOSE Renal cell carcinoma (RCC) is a very aggressive and often fatal heterogeneous disease that is usually asymptomatic until late in the disease. There is an urgent need for RCC specific biomarkers that may be exploited clinically for diagnostic and prognostic purposes. MATERIALS/METHODS Serum and urine samples were collected from patients with diagnosed kidney cancer and assessed with gold nanoparticle enhanced target (AuNPET) surface assisted-laser desorption/ionization mass spectrometry (SALDI MS) based metabolomics and statistical analysis. RESULTS A database search allowed providing assignment of signals for the most promising features with a satisfactory value of the area under the curve and accuracy. Four potential biomarkers were found in urine and serum samples to distinguish clear cell renal cell carcinoma (ccRCC) from controls, 4 for the ccRCC with and without metastases, and 6 metabolites to distinguish low and high stages or grades. CONCLUSIONS This pilot study suggests that serum and urine metabolomics based on AuNPET-LDI MS may be useful in distinguishing types, grades and stages of human RCC.
Collapse
|
9
|
Israr MZ, Bernieh D, Salzano A, Cassambai S, Yazaki Y, Suzuki T. Matrix-assisted laser desorption ionisation (MALDI) mass spectrometry (MS): basics and clinical applications. Clin Chem Lab Med 2021; 58:883-896. [PMID: 32229653 DOI: 10.1515/cclm-2019-0868] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 02/21/2020] [Indexed: 01/23/2023]
Abstract
Background Matrix-assisted laser desorption ionisation (MALDI) mass spectrometry (MS) has been used for more than 30 years. Compared with other analytical techniques, it offers ease of use, high throughput, robustness, cost-effectiveness, rapid analysis and sensitivity. As advantages, current clinical techniques (e.g. immunoassays) are unable to directly measure the biomarker; rather, they measure secondary signals. MALDI-MS has been extensively researched for clinical applications, and it is set for a breakthrough as a routine tool for clinical diagnostics. Content This review reports on the principles of MALDI-MS and discusses current clinical applications and the future clinical prospects for MALDI-MS. Furthermore, the review assesses the limitations currently experienced in clinical assays, the advantages and the impact of MALDI-MS to transform clinical laboratories. Summary MALDI-MS is widely used in clinical microbiology for the screening of microbial isolates; however, there is scope to apply MALDI-MS in the diagnosis, prognosis, therapeutic drug monitoring and biopsy imaging in many diseases. Outlook There is considerable potential for MALDI-MS in clinic as a tool for screening, profiling and imaging because of its high sensitivity and specificity over alternative techniques.
Collapse
Affiliation(s)
- Muhammad Zubair Israr
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Dennis Bernieh
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Andrea Salzano
- IRCCS SDN, Diagnostic and Nuclear Research Institute, Naples, Italy
| | - Shabana Cassambai
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Yoshiyuki Yazaki
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Toru Suzuki
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| |
Collapse
|
10
|
Brockmann EU, Potthoff A, Tortorella S, Soltwisch J, Dreisewerd K. Infrared MALDI Mass Spectrometry with Laser-Induced Postionization for Imaging of Bacterial Colonies. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:1053-1064. [PMID: 33780619 DOI: 10.1021/jasms.1c00020] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Ultraviolet matrix-assisted laser desorption ionization mass spectrometry imaging (UV-MALDI-MSI) is a powerful tool to visualize bacterial metabolites in microbial colonies and in biofilms. However, a challenge for the method is the efficient extraction of analytes from deeper within the bacterial colonies and from the cytoplasm of individual cells during the matrix coating step. Here, we used a pulsed infrared (IR) laser of 2.94 μm wavelength to disrupt and ablate bacterial cells without a prior coating with a MALDI matrix. Instead, tissue water or, in some experiments, in addition a small amount of glycerol was exploited for the deposition of the IR laser energy and for supporting the ionization of the analytes. Compared to water, glycerol exhibits a lower vapor pressure, which prolonged the available measurement time window within an MSI experiment. Mass spectra were acquired with a hybrid Synapt G2-S HDMS instrument at a pixel size of 120 μm. A frequency-quadrupled q-switched Nd:YAG laser with 266 nm wavelength served for laser-induced postionization (MALDI-2). In this way, the ion abundances of numerous small molecules such as nucleobases, 2-alkyl-quinolones, a prominent class of Pseudomonas aeruginosa signaling molecules involved in one of the three quorum-sensing pathways, and also the signals of various bacterial phospholipids were boosted, partially by orders of magnitude. We analyzed single and cocultured colonies of Gram-negative P. aeruginosa and of Gram-positive Bacillus subtilis and Staphylococcus aureus as exemplary bacterial systems. To enable a rapid (within 5 s) MSI-compatible steam inactivation in a custom-made autoclave filled with hot water steam, bacterial cultures were grown on porous polyamide membranes. Compared to a UV-MALDI-2-MS measurement of the same systems, mass spectra with a reduced low mass background were generally generated. This resulted in the unequivocal detection of numerous metabolites only with the IR laser. In a fundamental part of our study, and to optimize the IR-MALDI-2 approach for the highest analytical sensitivity, we characterized the expansion dynamics of the particle plume as generated by the IR laser. Here, we recorded the total ion count and the intensities of selected signals registered from P. aeruginosa samples as a function of the interlaser delay and buffer gas pressure in the ion source. The data revealed that the IR-MALDI-2 ion signals are primarily generated from slow particles having mean velocities of ∼10 m/s. Interestingly, two different pressure/delay time regimes of the optimized ionization efficiency for phospholipids and smaller metabolites, respectively, were revealed, a result pointing to yet-unknown convoluted reaction cascades. The described IR-MALDI-2 method could be a helpful new tool for a microbial mass spectrometry imaging of small molecules requiring little sample preparation.
Collapse
Affiliation(s)
- Eike U Brockmann
- Institute of Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
- Interdisciplinary Center for Clinical Research, University of Münster, Domagkstr. 3, 48149 Münster, Germany
| | - Alexander Potthoff
- Institute of Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
| | - Sara Tortorella
- Molecular Horizon, Via Montelino 30, 06084 Bettona, Perugia, Italy
| | - Jens Soltwisch
- Institute of Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
- Interdisciplinary Center for Clinical Research, University of Münster, Domagkstr. 3, 48149 Münster, Germany
| | - Klaus Dreisewerd
- Institute of Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
- Interdisciplinary Center for Clinical Research, University of Münster, Domagkstr. 3, 48149 Münster, Germany
| |
Collapse
|
11
|
Soft cluster-induced desorption/ionization mass spectrometry: How soft is soft? Biointerphases 2020; 15:021001. [PMID: 32164418 DOI: 10.1116/6.0000046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Desorption/ionization induced by neutral clusters (DINeC) is used as an ultrasoft desorption/ionization method for the analysis of fragile biomolecules by means of mass spectrometry (MS). As a test molecule, the glycopeptide vancomycin was measured with DINeC-MS, and resulting mass spectra were compared to the results obtained with electrospray ionization (ESI), matrix assisted laser desorption ionization, and time-of-flight secondary ion MS. Of the desorption-based techniques, DINeC spectra show the lowest abundance of fragments comparable to ESI spectra. The soft desorption nature of DINeC was further demonstrated when applied to MS analysis of teicoplanin.
Collapse
|
12
|
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]
|
13
|
Schmitt ND, Rawlins CM, Randall EC, Wang X, Koller A, Auclair JR, Kowalski JM, Kowalski PJ, Luther E, Ivanov AR, Agar NY, Agar JN. Genetically Encoded Fluorescent Proteins Enable High-Throughput Assignment of Cell Cohorts Directly from MALDI-MS Images. Anal Chem 2019; 91:3810-3817. [PMID: 30839199 PMCID: PMC6827431 DOI: 10.1021/acs.analchem.8b03454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI) provides a unique in situ chemical profile that can include drugs, nucleic acids, metabolites, lipids, and proteins. MSI of individual cells (of a known cell type) affords a unique insight into normal and disease-related processes and is a prerequisite for combining the results of MSI and other single-cell modalities (e.g. mass cytometry and next-generation sequencing). Technological barriers have prevented the high-throughput assignment of MSI spectra from solid tissue preparations to their cell type. These barriers include obtaining a suitable cell-identifying image (e.g. immunohistochemistry) and obtaining sufficiently accurate registration of the cell-identifying and MALDI-MS images. This study introduces a technique that overcame these barriers by assigning cell type directly from mass spectra. We hypothesized that, in MSI from mice with a defined fluorescent protein expression pattern, the fluorescent protein's molecular ion could be used to identify cell cohorts. A method was developed for the purification of enhanced yellow fluorescent protein (EYFP) from mice. To determine EYFP's molecular mass for MSI studies, we performed intact mass analysis and characterized the protein's primary structure and post-translational modifications through various techniques. MALDI-MSI methods were developed to enhance the detection of EYFP in situ, and by extraction of EYFP's molecular ion from MALDI-MS images, automated, whole-image assignment of cell cohorts was achieved. This method was validated using a well-characterized mouse line that expresses EYFP in motor and sensory neurons and should be applicable to hundreds of commercially available mice (and other animal) strains comprising a multitude of cell-specific fluorescent labels.
Collapse
Affiliation(s)
- Nicholas D. Schmitt
- Department of Chemistry and Chemical Biology, and Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA, 02115, USA
- These authors contributed equally to this work
| | - Catherine M. Rawlins
- Department of Chemistry and Chemical Biology, and Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA, 02115, USA
- These authors contributed equally to this work
| | - Elizabeth C. Randall
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Xianzhe Wang
- Department of Chemistry and Chemical Biology, and Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA, 02115, USA
| | - Antonius Koller
- Department of Chemistry and Chemical Biology, and Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA, 02115, USA
| | - Jared R. Auclair
- Department of Chemistry and Chemical Biology, and Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA, 02115, USA
- Biopharmaceutical Analysis Training Laboratory (BATL), Northeastern University Innovation Campus, Burlington, MA, 01803, USA
| | | | | | - Ed Luther
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, 02115, USA
| | - Alexander R. Ivanov
- Department of Chemistry and Chemical Biology, and Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA, 02115, USA
| | - Nathalie Y.R. Agar
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Department of Neurosurgery, Brigham and Women’s Hospital, Department of Cancer Biology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02115, USA
| | - Jeffrey N. Agar
- Department of Chemistry and Chemical Biology, and Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA, 02115, USA
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, 02115, USA
| |
Collapse
|
14
|
Trimpin S, Lee C, Weidner SM, El‐Baba TJ, Lutomski CA, Inutan ED, Foley CD, Ni C, McEwen CN. Unprecedented Ionization Processes in Mass Spectrometry Provide Missing Link between ESI and MALDI. Chemphyschem 2018; 19:581-589. [DOI: 10.1002/cphc.201701246] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 12/01/2017] [Indexed: 01/07/2023]
Affiliation(s)
- Sarah Trimpin
- Department of Chemistry Wayne State University 5101 Cass Ave Detroit MI 48202 USA
| | - Chuping Lee
- Institute of Atomic and Molecular Sciences Academia Sinica Taipei Taiwan
| | - Steffen M. Weidner
- Federal Institute for Materials Research and Testing (BAM) Richard-Willstätter-Strasse 11 12489 Berlin Germany
| | - Tarick J. El‐Baba
- Department of Chemistry Wayne State University 5101 Cass Ave Detroit MI 48202 USA
| | - Corinne A. Lutomski
- Department of Chemistry Wayne State University 5101 Cass Ave Detroit MI 48202 USA
| | - Ellen D. Inutan
- Department of Chemistry Wayne State University 5101 Cass Ave Detroit MI 48202 USA
| | - Casey D. Foley
- Department of Chemistry Wayne State University 5101 Cass Ave Detroit MI 48202 USA
| | - Chi‐Kung Ni
- Institute of Atomic and Molecular Sciences Academia Sinica Taipei Taiwan
| | - Charles N. McEwen
- Department of Chemistry & Biochemistry University of the Sciences Philadelphia PA 19104 USA
| |
Collapse
|
15
|
Basiri B, Murph MM, Bartlett MG. Assessing the Interplay between the Physicochemical Parameters of Ion-Pairing Reagents and the Analyte Sequence on the Electrospray Desorption Process for Oligonucleotides. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:1647-1656. [PMID: 28405940 PMCID: PMC5569388 DOI: 10.1007/s13361-017-1671-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/10/2017] [Accepted: 03/20/2017] [Indexed: 05/25/2023]
Abstract
Alkylamines are widely used as ion-pairing agents during LC-MS of oligonucleotides. In addition to a better chromatographic separation, they also assist with the desorption of oligonucleotide ions into the gas phase, cause charge state reduction, and decrease cation adduction. However, the choice of such ion-pairing agents has considerable influence on the MS signal intensity of oligonucleotides as they can also cause significant ion suppression. Interestingly, optimal ion-pairing agents should be selected on a case by case basis as their choice is strongly influenced by the sequence of the oligonucleotide under investigation. Despite imposing major practical difficulties to analytical method development, such a highly variable system that responds very strongly to the nuances of the electrospray composition provides an excellent opportunity for a fundamental study of the electrospray ionization process. Our investigations using this system quantitatively revealed the major factors that influenced the ESI ionization efficiency of oligonucleotides. Parameters such as boiling point, proton affinity, partition coefficient, water solubility, and Henry's law constants for the ion-pairing reagents and the hydrophobic thymine content of the oligonucleotides were found to be the most significant contributors. Identification of these parameters also allowed for the development of a statistical predictive algorithm that can assist with the choice of an optimum IP agent for each particular oligonucleotide sequence. We believe that research in the field of oligonucleotide bioanalysis will significantly benefit from this algorithm (included in Supplementary Material) as it advocates for the use of lesser-known but more suitable ion-pair alternatives to TEA for many oligonucleotide sequences. Graphical Abstract ᅟ.
Collapse
Affiliation(s)
- Babak Basiri
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia College of Pharmacy, 250 W. Green Street, Athens, GA, 30602-2352, USA
| | - Mandi M Murph
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia College of Pharmacy, 250 W. Green Street, Athens, GA, 30602-2352, USA
| | - Michael G Bartlett
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia College of Pharmacy, 250 W. Green Street, Athens, GA, 30602-2352, USA.
| |
Collapse
|
16
|
Rosen EP, Bokhart MT, Ghashghaei HT, Muddiman DC. Influence of Desorption Conditions on Analyte Sensitivity and Internal Energy in Discrete Tissue or Whole Body Imaging by IR-MALDESI. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2015; 26:899-910. [PMID: 25840812 PMCID: PMC4425634 DOI: 10.1007/s13361-015-1114-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 02/22/2015] [Accepted: 02/22/2015] [Indexed: 05/10/2023]
Abstract
Analyte signal in a laser desorption/postionization scheme such as infrared matrix-assisted laser desorption electrospray ionization (IR-MALDESI) is strongly coupled to the degree of overlap between the desorbed plume of neutral material from a sample and an orthogonal electrospray. In this work, we systematically examine the effect of desorption conditions on IR-MALDESI response to pharmaceutical drugs and endogenous lipids in biological tissue using a design of experiments approach. Optimized desorption conditions have then been used to conduct an untargeted lipidomic analysis of whole body sagittal sections of neonate mouse. IR-MALDESI response to a wide range of lipid classes has been demonstrated, with enhanced lipid coverage received by varying the laser wavelength used for mass spectrometry imaging (MSI). Targeted MS(2) imaging (MS(2)I) of an analyte, cocaine, deposited beneath whole body sections allowed determination of tissue-specific ion response factors, and CID fragments of cocaine were monitored to comment on wavelength-dependent internal energy deposition based on the "survival yield" method.
Collapse
Affiliation(s)
- Elias P. Rosen
- W.M. Keck FTMS Laboratory for Human Health Research, Department of Chemistry, North Carolina State University, Raleigh, North Carolina
| | - Mark T. Bokhart
- W.M. Keck FTMS Laboratory for Human Health Research, Department of Chemistry, North Carolina State University, Raleigh, North Carolina
| | - H. Troy Ghashghaei
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - David C. Muddiman
- W.M. Keck FTMS Laboratory for Human Health Research, Department of Chemistry, North Carolina State University, Raleigh, North Carolina
- Author for Correspondence David C. Muddiman, Ph.D., W.M. Keck FTMS Laboratory for Human Health Research, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, Phone: 919-513-0084,
| |
Collapse
|
17
|
Sekuła J, Nizioł J, Rode W, Ruman T. Silver nanostructures in laser desorption/ionization mass spectrometry and mass spectrometry imaging. Analyst 2015; 140:6195-209. [DOI: 10.1039/c5an00943j] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Silver nanoparticles have been successfully applied as a matrix replacement for the laser desorption/ionization time-of-flight mass spectrometry (LDI-ToF-MS).
Collapse
Affiliation(s)
- Justyna Sekuła
- Rzeszów University of Technology
- Faculty of Chemistry
- Bioorganic Chemistry Laboratory
- 35-959 Rzeszów
- Poland
| | - Joanna Nizioł
- Rzeszów University of Technology
- Faculty of Chemistry
- Bioorganic Chemistry Laboratory
- 35-959 Rzeszów
- Poland
| | - Wojciech Rode
- Nencki Institute of Experimental Biology
- 02-093 Warsaw
- Poland
| | - Tomasz Ruman
- Rzeszów University of Technology
- Faculty of Chemistry
- Bioorganic Chemistry Laboratory
- 35-959 Rzeszów
- Poland
| |
Collapse
|
18
|
Peng WP, Chou SW, Patil AA. Measuring masses of large biomolecules and bioparticles using mass spectrometric techniques. Analyst 2014; 139:3507-23. [DOI: 10.1039/c3an02329j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mass spectrometric techniques can measure the masses and fragments of large biomolecules and bioparticles.
Collapse
Affiliation(s)
- Wen-Ping Peng
- Department of Physics
- National Dong Hwa University
- Hualien, Republic of China
| | - Szu-Wei Chou
- Department of Physics
- National Dong Hwa University
- Hualien, Republic of China
| | - Avinash A. Patil
- Department of Physics
- National Dong Hwa University
- Hualien, Republic of China
| |
Collapse
|
19
|
Römpp A, Schäfer KC, Guenther S, Wang Z, Köstler M, Leisner A, Paschke C, Schramm T, Spengler B. High-resolution atmospheric pressure infrared laser desorption/ionization mass spectrometry imaging of biological tissue. Anal Bioanal Chem 2013; 405:6959-68. [DOI: 10.1007/s00216-013-7180-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 06/24/2013] [Accepted: 06/25/2013] [Indexed: 01/18/2023]
|
20
|
Huang L, Xiao X, Xie Y, Kageruka H, Zhou Y, Deng F, Zhong H. Compressed matrix thin film (CMTF)-assisted laser desorption ionization mass spectrometric analysis. Anal Chim Acta 2013; 786:85-94. [DOI: 10.1016/j.aca.2013.05.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 04/30/2013] [Accepted: 05/03/2013] [Indexed: 12/25/2022]
|
21
|
Lee BJ, Baur M, Gebhardt CR, Dürr M. Quantification of the ionization probability during desorption/ionization of oligopeptides induced by neutral cluster impact. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:1090-1094. [PMID: 23592213 DOI: 10.1002/rcm.6550] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 01/18/2013] [Accepted: 02/17/2013] [Indexed: 06/02/2023]
Abstract
RATIONALE Desorption-and-ionization induced by neutral cluster impact is a soft and matrix-free method, which leads to the formation of free ions of oligopeptides and smaller proteins without fragmentation. As a prerequisite for its successful application in bioanalytics, especially with respect to sensitivity, the ionization efficiency, i.e., the ion-to-neutral ratio of the desorbing molecules, was determined. METHODS Neutral SO2 clusters of 10(3) to 10(4) molecules in size were seeded in a pulsed He beam and used to desorb and ionize oligopeptides by means of cluster surface impact. The samples were prepared by drop casting a well-defined amount of substance on the substrate surface; the desorbing ions were identified by means of time-of-flight mass spectrometry. Furthermore, the ion current leaving the surface was determined for positive ions, which predominate in the investigated oligopeptides. RESULTS For angiotensin II, bradykinin (1-7), and adrenocorticotropic hormone (34-39), the number of ions desorbed from the respective samples was compared with the amount of substance applied on the substrate. Assuming that all biomolecules were desorbed during the experiment, the ion-to-neutral ratio or ionization efficiency η was determined. For the tested molecules, values of η between 0.5% and 3% were observed; the substrate material and the total amount of substance applied were shown to have a minor effect on the results. CONCLUSIONS The ion-to-neutral ratio in desorption/ionization of oligopeptides induced by neutral cluster impact was determined to be of the order of 10(-3) to 10(-2). The soft and matrix-free nature of the method in combination with this value of η might be interesting for applications in bioanalytics.
Collapse
Affiliation(s)
- B-J Lee
- Fakultät Angewandte Naturwissenschaften, Hochschule Esslingen, Esslingen, Germany
| | | | | | | |
Collapse
|
22
|
Gao X, Bi X, Wei J, Peng Z, Liu H, Jiang Y, Wei W, Cai Z. N-phosphorylation labeling for analysis of twenty natural amino acids and small peptides by using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Analyst 2013; 138:2632-9. [DOI: 10.1039/c3an00036b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
23
|
Cassou CA, Sterling HJ, Susa AC, Williams ER. Electrothermal supercharging in mass spectrometry and tandem mass spectrometry of native proteins. Anal Chem 2012. [PMID: 23194134 DOI: 10.1021/ac302256d] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Electrothermal supercharging of protein ions formed by electrospray ionization from buffered aqueous solutions results in significant increases to both the maximum and average charge states compared to native mass spectrometry in which ions are formed from the same solutions but with lower spray potentials. For eight of the nine proteins investigated, the maximum charge states of protonated ions formed from native solutions with electrothermal supercharging is greater than those obtained from conventional denaturing solutions consisting of water/methanol/acid, although the average charging is slightly lower owing to contributions of small populations of more folded low charge-state structures. Under these conditions, electrothermal supercharging is slightly less effective for anions than for cations. Equivalent sequence coverage (80%) is obtained with electron transfer dissociation of the same high charge-state ion of cytochrome c formed by electrothermal supercharging from native solutions and from denaturing solutions. Electrothermal supercharging should be advantageous for combining structural studies of proteins in native environments with mass spectrometers that have limited high m/z capabilities and for significantly improving tandem mass spectrometry performance for protein ions formed from solutions in which the molecules have native structures and activities.
Collapse
Affiliation(s)
- Catherine A Cassou
- Department of Chemistry, University of California, Berkeley, 94720-1460, United States
| | | | | | | |
Collapse
|
24
|
Konermann L, Ahadi E, Rodriguez AD, Vahidi S. Unraveling the Mechanism of Electrospray Ionization. Anal Chem 2012; 85:2-9. [DOI: 10.1021/ac302789c] [Citation(s) in RCA: 359] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Lars Konermann
- Department
of Chemistry, The University of Western Ontario, London, Ontario, N6A 5B7 Canada
| | - Elias Ahadi
- Department
of Chemistry, The University of Western Ontario, London, Ontario, N6A 5B7 Canada
| | - Antony D. Rodriguez
- Department
of Chemistry, The University of Western Ontario, London, Ontario, N6A 5B7 Canada
| | - Siavash Vahidi
- Department
of Chemistry, The University of Western Ontario, London, Ontario, N6A 5B7 Canada
| |
Collapse
|
25
|
Recent developments in liquid chromatography–mass spectrometry and related techniques. J Chromatogr A 2012; 1259:3-15. [DOI: 10.1016/j.chroma.2012.08.072] [Citation(s) in RCA: 228] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 08/22/2012] [Accepted: 08/23/2012] [Indexed: 11/22/2022]
|
26
|
Gao X, Tang Z, Lu M, Liu H, Jiang Y, Zhao Y, Cai Z. Suppression of matrix ions by N-phosphorylation labeling using matrix-assisted laser desorption–ionization time-of-flight mass spectrometry. Chem Commun (Camb) 2012; 48:10198-200. [DOI: 10.1039/c2cc36091h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
27
|
Shrivas K, Wu HF. Rapid and highly sensitive protein extractionviacobalt oxidenanoparticle-based liquid–liquid microextraction coupled with MALDI mass spectrometry. Analyst 2012; 137:890-5. [DOI: 10.1039/c1an15499k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
28
|
Chemical and Biochemical Applications of MALDI TOF-MS Based on Analyzing the Small Organic Compounds. Top Curr Chem (Cham) 2012; 331:165-92. [DOI: 10.1007/128_2012_364] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
29
|
|
30
|
Sun L, Zhao Q, Zhu G, Zhou Y, Wang T, Shan Y, Yang K, Liang Z, Zhang L, Zhang Y. Octyl-functionalized hybrid magnetic mesoporous microspheres for enrichment of low-concentration peptides prior to direct analysis by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:1257-1265. [PMID: 21488124 DOI: 10.1002/rcm.4986] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Octyl-functionalized hybrid magnetic mesoporous (Fe(3)O(4)·nSiO(2)·meso-hybrid-C8) microspheres were synthesized and applied in the isolation and pre-concentration of low-concentration peptides prior to direct analysis by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Such microspheres possess high surface area (324 m(2)/g), hydrophobic group (C8), relatively large pore volume (0.304 cm(3)/g), uniform pore diameter (~3.7 nm), and magnetic responsivity, which make them a simple and efficient kind of adsorbent for the enrichment of low-concentration peptides. For bovine serum albumin (BSA, 15 fmol μL(-1)) digest, after concentration by Fe(3)O(4)·nSiO(2)·meso-hybrid-C8 microspheres, the enrichment performance was evidently better than those obtained by solvent evaporation and C8-functionalized magnetic particles, and comparable to those obtained by commercial Anchor chip target and ZipTipC18 pipette tip. Such microspheres were further applied in the enrichment of the tryptic digests of rat cerebellum proteins and endogenous peptides of crude human serum, and more peaks with higher signal-to-noise (S/N) ratio were obtained than before pre-concentration. Furthermore, the pre-concentration reproducibility of magnetic microspheres for biological samples was good, and the limit of detection (LOD) for BSA digests by MALDI-TOF MS was decreased by at least one order of magnitude compared with that obtained without pre-concentration. All the above-mentioned results indicate that the synthesized Fe(3)O(4)·nSiO(2)·meso-hybrid-C8 microspheres are promising for the enrichment of low-concentration peptides from complex biosamples.
Collapse
Affiliation(s)
- Liangliang Sun
- National Chromatographic R & A Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Dybvik AI, Norberg AL, Schute V, Soltwisch J, Peter-Katalinić J, Vårum KM, Eijsink VGH, Dreisewerd K, Mormann M, Sørlie M. Analysis of noncovalent chitinase-chito-oligosaccharide complexes by infrared-matrix assisted laser desorption ionization and nanoelectrospray ionization mass spectrometry. Anal Chem 2011; 83:4030-6. [PMID: 21473578 DOI: 10.1021/ac1031308] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Transferring noncovalently bound complexes from the condensed phase into the gas phase represents a challenging task due to weak intermolecular bonds that have to be maintained during the phase transition. Currently, electrospray ionization (ESI) is the standard mass spectrometric (MS) technique to analyze noncovalent complexes. Although infrared matrix-assisted laser desorption ionization (IR-MALDI)-MS also provides particular soft desorption/ionization conditions, this method has so far hardly been applied for the analysis of noncovalent complexes. In this study, we employed IR-MALDI orthogonal time-of-flight (o-TOF)-MS in combination with the liquid matrix glycerol to characterize the specific complex formation of chito-oligosaccharide (CHOS) ligands with two variants of Chitinase A (ChiA) from Serratia marcescens, the inactive E315Q mutant and the active W167A mutant, respectively. The IR-MALDI-o-TOF-MS results were compared to those obtained using nano-ESI-quadrupole (q)-TOF-MS and ultraviolet (UV)-MALDI-o-TOF-MS. Using IR-MALDI-o-TOF-MS, specific noncovalent complexes between ChiA and CHOS were detected with distributions between enzymes with bound oligosaccharides vs free enzymes that were essentially identical to those obtained by nano-ESI-q-TOF-MS. Chitinase-CHOS complexes were not detected when UV-MALDI was employed for desorption/ionization. The results show that IR-MALDI-MS can be a valuable tool for fast and simple screening of noncovalent enzyme-ligand interactions.
Collapse
Affiliation(s)
- Anette I Dybvik
- Department of Biotechnology, Norwegian University of Science and Technology, Sem Sælandsvei 6-8, N-7491 Trondheim, Norway
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Wang HY, Chu X, Zhao ZX, He XS, Guo YL. Analysis of low molecular weight compounds by MALDI-FTICR-MS. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:1166-79. [DOI: 10.1016/j.jchromb.2011.03.037] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Revised: 03/11/2011] [Accepted: 03/18/2011] [Indexed: 10/18/2022]
|
33
|
Chang YL, Lee YC, Yang WB, Chen CH. Ionic liquid-assisted electrospray ionization of polysaccharides. JOURNAL OF MASS SPECTROMETRY : JMS 2011; 46:367-375. [PMID: 21438086 DOI: 10.1002/jms.1902] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this work, we give the report of significant detection sensitivity improvement of electrospray ionization (ESI) mass spectra of polysaccharides by adding various ionic liquid compounds into samples. Mass spectra obtained were greatly simplified and appeared to be similar to spectra from matrix-assisted laser desorption/ionization due to the narrow charge number distribution. Mass spectra of polysaccharides with the attachment of either anion or cation of ionic liquid compounds were observed. No protonated or deprotonated polysaccharide ions were detected when ionic liquid compounds were added into samples. Little alkali-attached polysaccharide ions were observed. Ionic liquid-assisted ESI (ILA-ESI) mass spectrometry has significantly improved the detection sensitivity of large neutral polysaccharide compounds.
Collapse
Affiliation(s)
- Yu-Ling Chang
- Genomics Research Center, Academia Sinica, Nankang, Taipei, Taiwan
| | | | | | | |
Collapse
|
34
|
Oliveira PH, Prather KLJ, Prazeres DMF, Monteiro GA. Mutation detection in plasmid-based biopharmaceuticals. Biotechnol J 2011; 6:378-91. [PMID: 21328546 DOI: 10.1002/biot.201000372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Revised: 12/09/2010] [Accepted: 12/15/2010] [Indexed: 12/21/2022]
Abstract
As the number of applications involving therapeutic plasmid DNA (pDNA) increases worldwide, there is a growing concern over maintaining rigorous quality control through a panel of high-quality assays. For this reason, efficient, cost-effective and sensitive technologies enabling the identification of genetic variants and unwanted side products are needed to successfully establish the identity and stability of a plasmid-based biopharmaceutical. This review highlights several bioinformatic tools for ab initio detection of potentially unstable DNA regions, as well as techniques used for mutation detection in nucleic acids, with particular emphasis on pDNA.
Collapse
Affiliation(s)
- Pedro H Oliveira
- Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico, Lisbon, Portugal.
| | | | | | | |
Collapse
|
35
|
Smith DF, Aizikov K, Duursma MC, Giskes F, Spaanderman DJ, McDonnell LA, O’Connor PB, Heeren RMA. An external matrix-assisted laser desorption ionization source for flexible FT-ICR Mass spectrometry imaging with internal calibration on adjacent samples. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2011; 22:130-7. [PMID: 21472551 PMCID: PMC3042104 DOI: 10.1007/s13361-010-0003-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Revised: 09/02/2010] [Accepted: 10/08/2010] [Indexed: 05/03/2023]
Abstract
We describe the construction and application of a new MALDI source for FT-ICR mass spectrometry imaging. The source includes a translational X-Y positioning stage with a 10×10 cm range of motion for analysis of large sample areas, a quadrupole for mass selection, and an external octopole ion trap with electrodes for the application of an axial potential gradient for controlled ion ejection. An off-line LC MALDI MS/MS run demonstrates the utility of the new source for data- and position-dependent experiments. A FT-ICR MS imaging experiment of a coronal rat brain section yields ∼200 unique peaks from m/z 400-1100 with corresponding mass-selected images. Mass spectra from every pixel are internally calibrated with respect to polymer calibrants collected from an adjacent slide.
Collapse
Affiliation(s)
- Donald F. Smith
- FOM Institute for Atomic and Molecular Physics, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Konstantin Aizikov
- Mass Spectrometry Resource, Department of Biochemistry, Boston University School of Medicine, Boston, MA USA
| | - Marc C. Duursma
- FOM Institute for Atomic and Molecular Physics, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Frans Giskes
- FOM Institute for Atomic and Molecular Physics, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Dirk-Jan Spaanderman
- FOM Institute for Atomic and Molecular Physics, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Liam A. McDonnell
- FOM Institute for Atomic and Molecular Physics, Science Park 104, 1098 XG Amsterdam, The Netherlands
- Present Address: Department of Parasitology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Peter B. O’Connor
- Mass Spectrometry Resource, Department of Biochemistry, Boston University School of Medicine, Boston, MA USA
- Present Address: Department of Chemistry, University of Warwick, Coventry, UK
| | - Ron M. A. Heeren
- FOM Institute for Atomic and Molecular Physics, Science Park 104, 1098 XG Amsterdam, The Netherlands
| |
Collapse
|
36
|
Meyer K, Ueland PM. Use of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for multiplex genotyping. Adv Clin Chem 2011; 53:1-29. [PMID: 21404912 DOI: 10.1016/b978-0-12-385855-9.00001-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
After completion of the human genome project, the focus of geneticists has shifted to elucidation of gene function and genetic diversity to understand the mechanisms of complex diseases or variation of patient response in drug treatment. In the past decade, many different genotyping techniques have been described for the detection of single-nucleotide polymorphisms (SNPs) and other common polymorphic variants. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) is among the most powerful and widely used genotyping technologies. The method offers great flexibility in assay design and enables highly accurate genotyping at high sample throughput. Different strategies for allele discrimination and quantification have been combined with MALDI (hybridization, ligation, cleavage, and primer extension). Approaches based on primer extension have become the most popular applications. This combination enables rapid and reliable multiplexing of SNPs and other common variants, and makes MALDI-TOF-MS well suited for large-scale studies in fine-mapping and verification of genome-wide scans. In contrast to standard genotyping, more demanding approaches have enabled genotyping of DNA pools, molecular haplotyping or the detection of free circulating DNA for prenatal or cancer diagnostics. In addition, MALDI can also be used in novel applications as DNA methylation analysis, expression profiling, and resequencing. This review gives an introduction to multiplex genotyping by MALDI-MS and will focus on the latest developments of this technology.
Collapse
|
37
|
Shrivas K, Agrawal K, Wu HF. Application of platinum nanoparticles as affinity probe and matrix for direct analysis of small biomolecules and microwave digested proteins using matrix-assisted laser desorption/ionization mass spectrometry. Analyst 2011; 136:2852-7. [DOI: 10.1039/c1an15211d] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
38
|
Shrivas K, Patel DK. Matrix-assisted laser desorption/ionization mass spectrometry for quantitative determination of β-blocker drugs in one-drop of human serum sample. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:35-40. [DOI: 10.1016/j.jchromb.2010.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2010] [Revised: 11/03/2010] [Accepted: 11/04/2010] [Indexed: 11/28/2022]
|
39
|
Shrivas K, Patel DK. Quantitative determination of nicotinic acid in micro liter volume of urine sample by drop-to-drop solvent microextraction coupled to matrix assisted laser desorption/ionization mass spectrometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:253-257. [PMID: 21035381 DOI: 10.1016/j.saa.2010.10.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 09/15/2010] [Accepted: 10/01/2010] [Indexed: 05/30/2023]
Abstract
Drop-to-drop solvent microextraction (DDSME) coupled with matrix assisted laser desorption/ionization mass spectrometry (MALDI-MS) for quantitative determination of nicotinic acid in one drop of urine sample has been proposed. All parameters, such as type of organic solvent, extraction time, exposure volume solvent, pH of the sample solution that affecting the separation and preconcentration of nicotinic acid were investigated. Under the optimal conditions, the detection limit of the method was 20 ng mL(-1) and the relative standard deviations (RSD) for determination of the nicotinic acid were in the range of 8.0-12.5%. The calculated calibration curves gave linearity in the range of 80-1000 ng mL(-1). The main advantages of the proposed method are simple, fast, and small amount of sample solution is used for separation and preconcentration of nicotinic acid. This method could be also useful for the analysis of other interested analytes in small volume of biological samples, like plasma, saliva and urine, where the availability of samples are limited.
Collapse
Affiliation(s)
- Kamlesh Shrivas
- Department of Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan.
| | | |
Collapse
|
40
|
van Remoortere A, van Zeijl RJM, van den Oever N, Franck J, Longuespée R, Wisztorski M, Salzet M, Deelder AM, Fournier I, McDonnell LA. MALDI imaging and profiling MS of higher mass proteins from tissue. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2010; 21:1922-1929. [PMID: 20829063 DOI: 10.1016/j.jasms.2010.07.011] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 07/22/2010] [Accepted: 07/30/2010] [Indexed: 05/29/2023]
Abstract
MALDI imaging and profiling mass spectrometry of proteins typically leads to the detection of a large number of peptides and small proteins but is much less successful for larger proteins: most ion signals correspond to proteins of m/z < 25,000. This is a severe limitation as many proteins, including cytokines, growth factors, enzymes, and receptors have molecular weights exceeding 25 kDa. The detector technology typically used for protein imaging, a microchannel plate, is not well suited to the detection of high m/z ions and is prone to detector saturation when analyzing complex mixtures. Here we report increased sensitivity for higher mass proteins by using the CovalX high mass HM1 detector (Zurich, Switzerland), which has been specifically designed for the detection of high mass ions and which is much less prone to detector saturation. The results demonstrate that a range of different sample preparation strategies enable higher mass proteins to be analyzed if the detector technology maintains high detection efficiency throughout the mass range. The detector enables proteins up to 70 kDa to be imaged, and proteins up to 110 kDa to be detected, directly from tissue, and indicates new directions by which the mass range amenable to MALDI imaging MS and MALDI profiling MS may be extended.
Collapse
Affiliation(s)
- Alexandra van Remoortere
- Biomolecular Mass Spectrometry Unit, Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
| | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Wu CI, Wang YS, Chen NG, Wu CY, Chen CH. Ultrasound ionization of biomolecules. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2010; 24:2569-2574. [PMID: 20740532 DOI: 10.1002/rcm.4677] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
To date, mass spectrometric analysis of biomolecules has been primarily performed with either matrix-assisted laser desorption/ionization (MALDI) or electrospray ionization (ESI). In this work, ultrasound produced by a simple piezoelectric device is shown as an alternative method for soft ionization of biomolecules. Precursor ions of proteins, saccharides and fatty acids showed little fragmentation. Cavitation is considered as a primary mechanism for the ionization of biomolecules.
Collapse
Affiliation(s)
- Chen-I Wu
- The Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China
| | | | | | | | | |
Collapse
|
42
|
Yang C, Hu X, Loboda AV, Lipson RH. A useful binary matrix for visible-MALDI of low molecular weight analytes. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2010; 21:294-299. [PMID: 19955002 DOI: 10.1016/j.jasms.2009.10.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Revised: 10/22/2009] [Accepted: 10/22/2009] [Indexed: 05/28/2023]
Abstract
In this work, a new absorbing candidate, rhodamine (R) 575, is described, which forms the basis of a binary matrix operating at 532 nm. Analyte ionization is found to be much more efficient when the dye is combined with a proton donor such as hydrochloric acid or alpha-cyano-4-hydroxycinnamic acid, or a proton acceptor such as sodium hydroxide. This makes the matrix more generic than many others that have been tried. Furthermore, under visible illumination R575 produces very few chemical fragments, making it useful for small molecular weight analyte detection. Spectra for a variety of analytes are shown. Insight into the MALDI mechanism was obtained by comparing the similarities and differences of visible-MALDI with the more common UV and IR-MALDI strategies.
Collapse
Affiliation(s)
- Chunyan Yang
- Department of Chemistry, University of Western Ontario, London, Ontario, Canada
| | | | | | | |
Collapse
|
43
|
Oberacher H. Frontiers of mass spectrometry in nucleic acids analysis. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2010; 16:351-365. [PMID: 20530841 DOI: 10.1255/ejms.1045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Nucleic acids research is a highly competitive field of research. A number of well established methods are available. The current output of high throughput ("next generation") sequencing technologies is impressive, and still technologies are continuing to make progress regarding read lengths, bp per second, accuracy and costs. Although in the 1990s MS was considered as an analytical platform for sequencing, it was soon realized that MS will never be competitive. Thus, the focus shifted from de novo sequencing towards other areas of application where MS has proven to be a powerful analytical tool. Potential niches for the application of MS in nucleic acids research include genotyping of genetic markers (single nucleotide polymorphisms, short tandem repeats, and combinations thereof), quality control of synthetic oligonucleotides, metabolic profiling of therapeutics, characterization of modified nucleobases in DNA and RNA molecules, and the study of non covalent interactions among nucleic acids as well as interactions of nucleic acids with drugs and proteins. The diversity of possible applications for MS highlights its significance for nucleic acid research.
Collapse
Affiliation(s)
- Herbert Oberacher
- Institute of Legal Medicine, Innsbruck Medical University, Innsbruck, Austria.
| |
Collapse
|
44
|
Tajiri M, Takeuchi T, Wada Y. Distinct Features of Matrix-Assisted 6 μm Infrared Laser Desorption/Ionization Mass Spectrometry in Biomolecular Analysis. Anal Chem 2009; 81:6750-5. [DOI: 10.1021/ac900695q] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michiko Tajiri
- Department of Molecular Medicine, Osaka Medical Center and Research Institute for Maternal and Child Health, 840 Murodo-cho Izumi, Osaka 594-1101, Japan, CREST, Japan Science and Technology Agency, 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan, and Department of Chemistry, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara, Nara 630-8506, Japan
| | - Takae Takeuchi
- Department of Molecular Medicine, Osaka Medical Center and Research Institute for Maternal and Child Health, 840 Murodo-cho Izumi, Osaka 594-1101, Japan, CREST, Japan Science and Technology Agency, 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan, and Department of Chemistry, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara, Nara 630-8506, Japan
| | - Yoshinao Wada
- Department of Molecular Medicine, Osaka Medical Center and Research Institute for Maternal and Child Health, 840 Murodo-cho Izumi, Osaka 594-1101, Japan, CREST, Japan Science and Technology Agency, 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan, and Department of Chemistry, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara, Nara 630-8506, Japan
| |
Collapse
|
45
|
Gebhardt C, Tomsic A, Schröder H, Dürr M, Kompa K. Matrix-Free Formation of Gas-Phase Biomolecular Ions by Soft Cluster-Induced Desorption. Angew Chem Int Ed Engl 2009; 48:4162-5. [DOI: 10.1002/anie.200804431] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
46
|
Gebhardt C, Tomsic A, Schröder H, Dürr M, Kompa K. Matrix-Free Formation of Gas-Phase Biomolecular Ions by Soft Cluster-Induced Desorption. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200804431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
47
|
Shrivas K, Kailasa SK, Wu HF. Quantum dots laser desorption/ionization MS: multifunctional CdSe quantum dots as the matrix, concentrating probes and acceleration for microwave enzymatic digestion for peptide analysis and high resolution detection of proteins in a linear MALDI-TOF MS. Proteomics 2009; 9:2656-67. [DOI: 10.1002/pmic.200800772] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
48
|
Riehemann K, Schneider S, Luger T, Godin B, Ferrari M, Fuchs H. Nanomedizin - Herausforderung und Perspektiven. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200802585] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
49
|
Riehemann K, Schneider SW, Luger TA, Godin B, Ferrari M, Fuchs H. Nanomedicine--challenge and perspectives. Angew Chem Int Ed Engl 2009; 48:872-97. [PMID: 19142939 PMCID: PMC4175737 DOI: 10.1002/anie.200802585] [Citation(s) in RCA: 831] [Impact Index Per Article: 55.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The application of nanotechnology concepts to medicine joins two large cross-disciplinary fields with an unprecedented societal and economical potential arising from the natural combination of specific achievements in the respective fields. The common basis evolves from the molecular-scale properties relevant to the two fields. Local probes and molecular imaging techniques allow surface and interface properties to be characterized on a nanometer scale at predefined locations, while chemical approaches offer the opportunity to elaborate and address surfaces, for example, for targeted drug delivery, enhanced biocompatibility, and neuroprosthetic purposes. However, concerns arise in this cross-disciplinary area about toxicological aspects and ethical implications. This Review gives an overview of selected recent developments and applications of nanomedicine.
Collapse
Affiliation(s)
- Kristina Riehemann
- Dr. K. Riehemann, Prof. Dr. H. Fuchs, Center for Nanotechnology (CeNTech) and Physical Institute; WWU Münster, Wilhelm Klemm-Str. 10, 48149 Münster, Germany, Fax:+49 (251) 83 33602, , Homepage: http://www.uni-muenster.de/Physik.PI/Fuchs/
| | | | | | | | | | - Harald Fuchs
- Dr. K. Riehemann, Prof. Dr. H. Fuchs, Center for Nanotechnology (CeNTech) and Physical Institute; WWU Münster, Wilhelm Klemm-Str. 10, 48149 Münster, Germany, Fax:+49 (251) 83 33602, , Homepage: http://www.uni-muenster.de/Physik.PI/Fuchs/
| |
Collapse
|
50
|
Shrivas K, Wu HF. Applications of silver nanoparticles capped with different functional groups as the matrix and affinity probes in surface-assisted laser desorption/ionization time-of-flight and atmospheric pressure matrix-assisted laser desorption/ionization ion trap mass spectrometry for rapid analysis of sulfur drugs and biothiols in human urine. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:2863-2872. [PMID: 18720468 DOI: 10.1002/rcm.3681] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A strategy is presented for the analysis of sulfur drugs and biothiols using silver nanoparticles (AgNPs) capped with different functional groups as the matrix and affinity probes in surface-assisted laser desorption/ionization time-of-flight mass spectrometry (SALDI-TOF MS) and atmospheric pressure-matrix assisted laser desorption/ionization ion trap mass spectrometry (AP-MALDI-ITMS). Biothiols adsorbed on the surface of AgNPs through covalent bonding were subjected to ultraviolet (UV) radiation that enabled desorption and ionization due to the excellent photochemical property of NPs. The proposed method has been successfully applied for the determination of cysteine and homocysteine in human urine samples using an internal standard. The limit of detection (LOD) and limit of quantification (LOQ) for cysteine and homocysteine in urine sample are 7 and 22 nM, respectively, with a relative standard deviation (RSD) of <10%. The advantages of the present method compared with the methods reported in the literature for biothiol analysis are simplicity, rapidity and sensitivity without the need for time-consuming separation and tedious preconcentration processes. Additionally, we also found that the bare AgNPs can be directly used as the matrix in MALDI-TOF MS for the analysis of sulfur drugs without the addition of an extra proton source.
Collapse
Affiliation(s)
- Kamlesh Shrivas
- Department of Chemistry, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | | |
Collapse
|