1
|
Pathmasiri KC, Nguyen TTA, Khamidova N, Cologna SM. Mass spectrometry-based lipid analysis and imaging. CURRENT TOPICS IN MEMBRANES 2021; 88:315-357. [PMID: 34862030 DOI: 10.1016/bs.ctm.2021.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mass spectrometry imaging (MSI) is a powerful tool for in situ mapping of analytes across a sample. With growing interest in lipid biochemistry, the ability to perform such mapping without antibodies has opened many opportunities for MSI and lipid analysis. Herein, we discuss the basics of MSI with particular emphasis on MALDI mass spectrometry and lipid analysis. A discussion of critical advancements as well as protocol details are provided to the reader. In addition, strategies for improving the detection of lipids, as well as applications in biomedical research, are presented.
Collapse
Affiliation(s)
- Koralege C Pathmasiri
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL, United States
| | - Thu T A Nguyen
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL, United States
| | - Nigina Khamidova
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL, United States
| | - Stephanie M Cologna
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL, United States; Laboratory of Integrated Neuroscience, University of Illinois at Chicago, Chicago, IL, United States.
| |
Collapse
|
2
|
Quantitative mass spectrometry imaging of drugs and metabolites: a multiplatform comparison. Anal Bioanal Chem 2021; 413:2779-2791. [PMID: 33770207 PMCID: PMC8007509 DOI: 10.1007/s00216-021-03210-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 01/25/2021] [Accepted: 02/01/2021] [Indexed: 01/11/2023]
Abstract
Mass spectrometry imaging (MSI) provides insight into the molecular distribution of a broad range of compounds and, therefore, is frequently applied in the pharmaceutical industry. Pharmacokinetic and toxicological studies deploy MSI to localize potential drugs and their metabolites in biological tissues but currently require other analytical tools to quantify these pharmaceutical compounds in the same tissues. Quantitative mass spectrometry imaging (Q-MSI) is a field with challenges due to the high biological variability in samples combined with the limited sample cleanup and separation strategies available prior to MSI. In consequence, more selectivity in MSI instruments is required. This can be provided by multiple reaction monitoring (MRM) which uses specific precursor ion-product ion transitions. This targeted approach is in particular suitable for pharmaceutical compounds because their molecular identity is known prior to analysis. In this work, we compared different analytical platforms to assess the performance of MRM detection compared to other MS instruments/MS modes used in a Q-MSI workflow for two drug candidates (A and B). Limit of detection (LOD), linearity, and precision and accuracy of high and low quality control (QC) samples were compared between MS instruments/modes. MRM mode on a triple quadrupole mass spectrometer (QqQ) provided the best overall performance with the following results for compounds A and B: LOD 35.5 and 2.5 μg/g tissue, R2 0.97 and 0.98 linearity, relative standard deviation QC <13.6%, and 97-112% accuracy. Other MS modes resulted in LOD 6.7-569.4 and 2.6-119.1 μg/g tissue, R2 0.86-0.98 and 0.86-0.98 linearity, relative standard deviation QC < 19.4 and < 37.5%, and 70-356% and 64-398% accuracy for drug candidates A and B, respectively. In addition, we propose an optimized 3D printed mimetic tissue model to increase the overall analytical throughput of our approach for large animal studies. The MRM imaging platform was applied as proof-of-principle for quantitative detection of drug candidates A and B in four dog livers and compared to LC-MS. The Q-MSI concentrations differed <3.5 times with the concentrations observed by LC-MS. Our presented MRM-based Q-MSI approach provides a more selective and high-throughput analytical platform due to MRM specificity combined with an optimized 3D printed mimetic tissue model.
Collapse
|
3
|
Magnetic Nanomaterials in Chinese Medicine Chemical Composition Analysis and Drug Metabolism and Its Industry Prospect and Development Path Research. J CHEM-NY 2020. [DOI: 10.1155/2020/1234269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The paramagnetism and superparamagnetism of magnetic nanomaterials are very important for in vivo applications. The magnetic particles with paramagnetism or superparamagnetism can redistribute the magnetic particles after the magnetic field is withdrawn, which is widely used for the separation and purification of biomolecules. At the same time, superparamagnetic particles can also be used as MRI imaging contrast agent. Compared with Western medicine, traditional Chinese medicine is different from Western medicine in that it is originated from nature and has thousands of years of clinical efficacy. Therefore, we hope to elaborate the complex mechanism of traditional Chinese medicine through some modern technical means: through the establishment of relevant quality control system, Chinese medicine will be recognized and popularized in the international field. Therefore, this paper discusses the application of magnetic nanomaterials in the chemical composition analysis and drug metabolism of traditional Chinese medicine and its industrial prospect and development path. Firstly, the advantages of magnetic nanomaterials and the shortcomings of chemical composition analysis technology of traditional Chinese medicine are analyzed theoretically. Then, through the experimental simulation, the results show that, under the optimal conditions, the magnetic nanomaterials can be used to analyze the chemical composition of traditional Chinese medicine. The peak current and concentration of THP showed a good linear relationship in the range of 5.2 × 10−8 ∼ 2.1 × 10−5 mol/L, and the detection limit was 1.9 × 10−7 mol/L. Moreover, it showed effective results in repeatability, stability, and interference tests. Therefore, magnetic nanomaterials play an important role in the chemical composition analysis and drug metabolism of traditional Chinese medicine as well as its industrial prospect and development path.
Collapse
|
4
|
Quantification and assessment of detection capability in imaging mass spectrometry using a revised mimetic tissue model. Bioanalysis 2019; 11:1099-1116. [PMID: 31251106 DOI: 10.4155/bio-2019-0035] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aim: A revised method of preparing the mimetic tissue model for quantitative imaging mass spectrometry (IMS) is evaluated. Concepts of assessing detection capability are adapted from other imaging or mass spectrometry (MS)-based technologies to improve upon the reliability of IMS quantification. Materials & methods: The mimetic tissue model is prepared by serially freezing spiked-tissue homogenates into a cylindrical mold to create a plug of tissue with a stepped concentration gradient of matrix-matched standards. Weighted least squares (WLS) linear regression is applied due to the heteroscedastisity (change in variance with intensity) of most MS data. Results & conclusions: Imaging poses several caveats for quantification which are unique compared with other MS-based methods. Aspects of the design, construction, application, and evaluation of the matrix-matched standard curve for the mimetic tissue model are discussed. In addition, the criticality of the ion distribution in the design of a purposeful liquid chromatography coupled to mass spectrometry (LC-MS) validation is reviewed.
Collapse
|
5
|
Applications of MALDI mass spectrometry imaging for pharmacokinetic studies during drug development. Drug Metab Pharmacokinet 2019; 34:209-216. [DOI: 10.1016/j.dmpk.2019.04.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/14/2019] [Accepted: 04/19/2019] [Indexed: 12/23/2022]
|
6
|
Nozaki K, Nakabayashi Y, Murakami T, Miyazato A, Osaka I. Novel approach to enhance sensitivity in surface-assisted laser desorption/ionization mass spectrometry imaging using deposited organic-inorganic hybrid matrices. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:612-619. [PMID: 31070274 DOI: 10.1002/jms.4370] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/16/2019] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
Sample pretreatment is key to obtaining good data in matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI). Although sublimation is one of the best methods for obtaining homogenously fine organic matrix crystals, its sensitivity can be low due to the lack of a solvent extraction effect. We investigated the effect of incorporating a thin film of metal formed by zirconium (Zr) sputtering into the sublimation process for MALDI matrix deposition for improving the detection sensitivity in mouse liver tissue sections treated with olanzapine. The matrix-enhanced surface-assisted laser desorption/ionization (ME-SALDI) method, where a matrix was formed by sputtering Zr to form a thin nanoparticle layer before depositing MALDI organic matrix comprising α-cyano-4-hydroxycinnamic acid (CHCA) by sublimation, resulted in a significant improvement in sensitivity, with the ion intensity of olanzapine being about 1800 times that observed using the MALDI method, comprising CHCA sublimation alone. When Zr sputtering was performed after CHCA deposition, however, no such enhancement in sensitivity was observed. The enhanced sensitivity due to Zr sputtering was also observed when the CHCA solution was applied by spraying, being about twice as high as that observed by CHCA spraying alone. In addition, the detection sensitivity of these various pretreatment methods was similar for endogenous glutathione. Given that sample preparation using the ME-SALDI-MSI method, which combines Zr sputtering with the sublimation method for depositing an organic matrix, does not involve a solvent, delocalization problems such as migration of analytes observed after matrix spraying and washing with aqueous solutions as sample pretreatment are not expected. Therefore, ME-Zr-SALDI-MSI is a novel sample pretreatment method that can improve the sensitivity of analytes while maintaining high spatial resolution in MALDI-MSI.
Collapse
Affiliation(s)
- Kazuyoshi Nozaki
- Bioimaging, Analysis & Pharmacokinetics Research Labs. Drug Discovery research, Astellas Pharma Inc, 21 Miyukigaoka, Tsukuba-shi, Ibaraki, 305-8585, Japan
| | - Yuji Nakabayashi
- Center for Nano Material and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Tatsuya Murakami
- Center for Nano Material and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Akio Miyazato
- Center for Nano Material and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Issey Osaka
- Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu-City, Toyama, 939-0398, Japan
| |
Collapse
|
7
|
Grove KJ, Hoque S, Rudewicz PJ. Investigation of amodiaquine localization in liver lobules using matrix-assisted laser desorption/ionization imaging mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33:252-258. [PMID: 30394607 DOI: 10.1002/rcm.8339] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/23/2018] [Accepted: 10/27/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE High mass and high spatial resolution matrix-assisted laser desorption/ionization (MALDI) imaging mass spectrometry (IMS) opens new possibilities for the detailed study of the hepatic metabolism of drugs. The spatial and temporal distribution of drug metabolites within liver lobules, anatomical subunits of the liver, may aid in the understanding of the formation of reactive metabolites that bind to liver proteins and cause drug-induced liver injury. METHODS Frozen livers obtained from rats dosed orally with amodiaquine (100 mg/kg) were sectioned at 10 μm and coated with a MALDI matrix. The liver sections were then analyzed using a Fourier transform ion cyclotron resonance mass spectrometer. Images corresponding to amodiaquine and its metabolites were obtained at a spatial resolution of 25 μm. RESULTS Molecular images of amodiaquine within liver lobules have higher intensities near the portal triad and lower intensities near the central vein. CONCLUSIONS This study demonstrates that MALDI IMS can be used to investigate the metabolism of drugs within liver lobules. The results are consistent with existing knowledge of amodiaquine metabolism and reactive metabolite formation.
Collapse
Affiliation(s)
- Kerri J Grove
- Novartis Institutes for Biomedical Research, Emeryville, CA, 94608, USA
| | - Shaila Hoque
- Novartis Institutes for Biomedical Research, Emeryville, CA, 94608, USA
| | | |
Collapse
|
8
|
Lamont L, Eijkel GB, Jones EA, Flinders B, Ellis SR, Porta Siegel T, Heeren RMA, Vreeken RJ. Targeted Drug and Metabolite Imaging: Desorption Electrospray Ionization Combined with Triple Quadrupole Mass Spectrometry. Anal Chem 2018. [PMID: 30346139 DOI: 10.1021/acs.analchem.8b03857(2018)] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
Mass spectrometry imaging (MSI) has proven to be a valuable tool for drug and metabolite imaging in pharmaceutical toxicology studies and can reveal, for example, accumulation of drug candidates in early drug development. However, the lack of sample cleanup and chromatographic separation can hamper the analysis due to isobaric interferences. Multiple reaction monitoring (MRM) uses unique precursor ion-product ion transitions to add specificity which leads to higher selectivity. Here, we present a targeted imaging platform where desorption electrospray ionization is combined with a triple quadrupole (QqQ) system to perform MRM imaging. The platform was applied to visualize (i) lipids in mouse brain tissue sections and (ii) a drug candidate and metabolite in canine liver tissue. All QqQ modes were investigated to show the increased detection time provided by MRM as well as the possibility to perform dual polarity imaging. This is very beneficial for lipid imaging because some phospholipid classes ionize in opposite polarity (e.g., phosphatidylcholine/sphingomyelin in positive ion mode and phosphatidylserine/phosphatidylethanolamine in negative ion mode). Drug and metabolite images were obtained to show its strength in drug distribution studies. Multiple MRM transitions were used to confirm the local presence and selective detection of pharmaceutical compounds.
Collapse
Affiliation(s)
- Lieke Lamont
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Gert B Eijkel
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | | | - Bryn Flinders
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Shane R Ellis
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Tiffany Porta Siegel
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Ron M A Heeren
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Rob J Vreeken
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
- Janssen Research & Development , B-2340 Beerse , Belgium
| |
Collapse
|
9
|
Lamont L, Eijkel GB, Jones EA, Flinders B, Ellis SR, Porta Siegel T, Heeren RMA, Vreeken RJ. Targeted Drug and Metabolite Imaging: Desorption Electrospray Ionization Combined with Triple Quadrupole Mass Spectrometry. Anal Chem 2018; 90:13229-13235. [PMID: 30346139 PMCID: PMC6256344 DOI: 10.1021/acs.analchem.8b03857] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
![]()
Mass
spectrometry imaging (MSI) has proven to be a valuable tool
for drug and metabolite imaging in pharmaceutical toxicology studies
and can reveal, for example, accumulation of drug candidates in early
drug development. However, the lack of sample cleanup and chromatographic
separation can hamper the analysis due to isobaric interferences.
Multiple reaction monitoring (MRM) uses unique precursor ion-product
ion transitions to add specificity which leads to higher selectivity.
Here, we present a targeted imaging platform where desorption electrospray
ionization is combined with a triple quadrupole (QqQ) system to perform
MRM imaging. The platform was applied to visualize (i) lipids in mouse
brain tissue sections and (ii) a drug candidate and metabolite in
canine liver tissue. All QqQ modes were investigated to show the increased
detection time provided by MRM as well as the possibility to perform
dual polarity imaging. This is very beneficial for lipid imaging because
some phospholipid classes ionize in opposite polarity (e.g., phosphatidylcholine/sphingomyelin
in positive ion mode and phosphatidylserine/phosphatidylethanolamine
in negative ion mode). Drug and metabolite images were obtained to
show its strength in drug distribution studies. Multiple MRM transitions
were used to confirm the local presence and selective detection of
pharmaceutical compounds.
Collapse
Affiliation(s)
- Lieke Lamont
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Gert B Eijkel
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | | | - Bryn Flinders
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Shane R Ellis
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Tiffany Porta Siegel
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Ron M A Heeren
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands
| | - Rob J Vreeken
- Maastricht Multimodal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht University , 6229 ER Maastricht , The Netherlands.,Janssen Research & Development , B-2340 Beerse , Belgium
| |
Collapse
|
10
|
Greco V, Piras C, Pieroni L, Ronci M, Putignani L, Roncada P, Urbani A. Applications of MALDI-TOF mass spectrometry in clinical proteomics. Expert Rev Proteomics 2018; 15:683-696. [PMID: 30058389 DOI: 10.1080/14789450.2018.1505510] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
INTRODUCTION The development of precision medicine requires advanced technologies to address the multifactorial disease stratification and to support personalized treatments. Among omics techniques, proteomics based on Mass Spectrometry (MS) is becoming increasingly relevant in clinical practice allowing a phenotypic characterization of the dynamic functional status of the organism. From this perspective, Matrix Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) MS is a suitable platform for providing a high-throughput support to clinics. Areas covered: This review aims to provide an updated overview of MALDI-TOF MS applications in clinical proteomics. The most relevant features of this analysis have been discussed, highlighting both pre-analytical and analytical factors that are crucial in proteomics studies. Particular emphasis is placed on biofluids proteomics for biomarkers discovery and on recent progresses in clinical microbiology, drug monitoring, and minimal residual disease (MRD). Expert commentary: Despite some analytical limitations, the latest technological advances together with the easiness of use, the low time and low cost consuming and the high throughput are making MALDI-TOF MS instruments very attractive for the clinical practice. These features offer a significant potential for the routine of the clinical laboratory and ultimately for personalized medicine.
Collapse
Affiliation(s)
- Viviana Greco
- a Institute of Biochemistry and Clinical Biochemistry , Università Cattolica del Sacro Cuore , Rome , Italy.,b Department of Laboratory Diagnostic and Infectious Diseases , Fondazione Policlinico Universitario Agostino Gemelli-IRCCS , Rome , Italy
| | - Cristian Piras
- c Dipartimento di Medicina Veterinaria , Università degli studi di Milano , Milano , Italy
| | - Luisa Pieroni
- d Proteomics and Metabonomics Unit , IRCCS-Fondazione Santa Lucia , Rome , Italy
| | - Maurizio Ronci
- d Proteomics and Metabonomics Unit , IRCCS-Fondazione Santa Lucia , Rome , Italy.,e Department of Medical, Oral and Biotechnological Sciences , University "G. D'Annunzio" of Chieti-Pescara , Chieti , Italy
| | - Lorenza Putignani
- f Unit of Parasitology Bambino Gesù Children's Hospital , IRCCS , Rome , Italy.,g Unit of Human Microbiome , Bambino Gesù Children's Hospital, IRCCS , Rome , Italy
| | - Paola Roncada
- h Dipartimento di Scienze della Salute , Università degli studi "Magna Græcia" di Catanzaro , Catanzaro , Italy
| | - Andrea Urbani
- a Institute of Biochemistry and Clinical Biochemistry , Università Cattolica del Sacro Cuore , Rome , Italy.,b Department of Laboratory Diagnostic and Infectious Diseases , Fondazione Policlinico Universitario Agostino Gemelli-IRCCS , Rome , Italy
| |
Collapse
|
11
|
Mikov M, Đanić M, Pavlović N, Stanimirov B, Goločorbin-Kon S, Stankov K, Al-Salami H. The Role of Drug Metabolites in the Inhibition of Cytochrome P450 Enzymes. Eur J Drug Metab Pharmacokinet 2017; 42:881-890. [DOI: 10.1007/s13318-017-0417-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
12
|
Mitchell ML, Hamilton BR, Madio B, Morales RAV, Tonkin-Hill GQ, Papenfuss AT, Purcell AW, King GF, Undheim EAB, Norton RS. The Use of Imaging Mass Spectrometry to Study Peptide Toxin Distribution in Australian Sea Anemones. Aust J Chem 2017. [DOI: 10.1071/ch17228] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
13
|
Baker TC, Han J, Borchers CH. Recent advancements in matrix-assisted laser desorption/ionization mass spectrometry imaging. Curr Opin Biotechnol 2016; 43:62-69. [PMID: 27690313 DOI: 10.1016/j.copbio.2016.09.003] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 09/06/2016] [Indexed: 10/20/2022]
Abstract
Matrix assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) is a robust tool for spatially resolved analysis of biomolecules in situ. Recent advances in high ionization-efficiency MALDI matrices, new matrix deposition procedures, and the development of high spatial-resolution and high sensitivity MS instruments continue to drive new applications of MALDI-MSI, along with other MSI techniques, which allow us to visualize and determine the regio-specific and temporal changes in proteins, peptides, lipids, drug molecules, and metabolites within the tissues, cells and microorganisms. These provide researchers with a new route to the discovery of potential biomarkers of human disease and elucidation of the underlying biology of metabolic regulation, thus bringing our understanding of human health to a new level.
Collapse
Affiliation(s)
- Teesha C Baker
- University of Victoria-Genome British Columbia Proteomics Centre, #3101-4464 Markham St., Vancouver Island Technology Park, Victoria, BC V8Z 7X8, Canada; Department of Biochemistry and Microbiology, University of Victoria, Petch Building Room 207, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada
| | - Jun Han
- University of Victoria-Genome British Columbia Proteomics Centre, #3101-4464 Markham St., Vancouver Island Technology Park, Victoria, BC V8Z 7X8, Canada
| | - Christoph H Borchers
- University of Victoria-Genome British Columbia Proteomics Centre, #3101-4464 Markham St., Vancouver Island Technology Park, Victoria, BC V8Z 7X8, Canada; Department of Biochemistry and Microbiology, University of Victoria, Petch Building Room 207, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada.
| |
Collapse
|