51
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Goh B, Kim J, Seo S, Kim TY. High-Throughput Measurement of Lipid Turnover Rates Using Partial Metabolic Heavy Water Labeling. Anal Chem 2018; 90:6509-6518. [DOI: 10.1021/acs.analchem.7b05428] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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52
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Zhang L, Vertes A. Einzelzell‐Massenspektrometrie zur Untersuchung zellulärer Heterogenität. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201709719] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Linwen Zhang
- Department of Chemistry The George Washington University Washington DC 20052 USA
| | - Akos Vertes
- Department of Chemistry The George Washington University Washington DC 20052 USA
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53
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Zhang L, Vertes A. Single‐Cell Mass Spectrometry Approaches to Explore Cellular Heterogeneity. Angew Chem Int Ed Engl 2018; 57:4466-4477. [DOI: 10.1002/anie.201709719] [Citation(s) in RCA: 172] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/27/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Linwen Zhang
- Department of Chemistry The George Washington University Washington DC 20052 USA
| | - Akos Vertes
- Department of Chemistry The George Washington University Washington DC 20052 USA
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54
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Zhang L, Sevinsky CJ, Davis BM, Vertes A. Single-Cell Mass Spectrometry of Subpopulations Selected by Fluorescence Microscopy. Anal Chem 2018; 90:4626-4634. [DOI: 10.1021/acs.analchem.7b05126] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Linwen Zhang
- Department of Chemistry, The George Washington University, Washington, District of Columbia 20052, United States
| | | | - Brian M. Davis
- GE Global Research, Niskayuna, New York 12309, United States
| | - Akos Vertes
- Department of Chemistry, The George Washington University, Washington, District of Columbia 20052, United States
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55
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Onjiko RM, Portero EP, Moody SA, Nemes P. Microprobe Capillary Electrophoresis Mass Spectrometry for Single-cell Metabolomics in Live Frog (Xenopus laevis) Embryos. J Vis Exp 2017. [PMID: 29286491 DOI: 10.3791/56956] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The quantification of small molecules in single cells raises new potentials for better understanding the basic processes that underlie embryonic development. To enable single-cell investigations directly in live embryos, new analytical approaches are needed, particularly those that are sensitive, selective, quantitative, robust, and scalable to different cell sizes. Here, we present a protocol that enables the in situ analysis of metabolism in single cells in freely developing embryos of the South African clawed frog (Xenopus laevis), a powerful model in cell and developmental biology. This approach uses a capillary microprobe to aspirate a defined portion from single identified cells in the embryo, leaving neighboring cells intact for subsequent analysis. The collected cell content is analyzed by a microscale capillary electrophoresis electrospray ionization (CE-ESI) interface coupled to a high-resolution tandem mass spectrometer. This approach is scalable to various cell sizes and compatible with the complex three-dimensional structure of the developing embryo. As an example, we demonstrate that microprobe single-cell CE-ESI-MS enables the elucidation of metabolic cell heterogeneity that unfolds as a progenitor cell gives rise to descendants during development of the embryo. Besides cell and developmental biology, the single-cell analysis protocols described here are amenable to other cell sizes, cell types, or animal models.
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Affiliation(s)
| | | | - Sally A Moody
- Department of Anatomy & Regenerative Biology, George Washington University
| | - Peter Nemes
- Department of Chemistry, George Washington University; Department of Chemistry & Biochemistry, University of Maryland, College Park;
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56
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Zhou Z, Tu J, Zhu ZJ. Advancing the large-scale CCS database for metabolomics and lipidomics at the machine-learning era. Curr Opin Chem Biol 2017; 42:34-41. [PMID: 29136580 DOI: 10.1016/j.cbpa.2017.10.033] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/28/2017] [Accepted: 10/30/2017] [Indexed: 01/02/2023]
Abstract
Metabolomics and lipidomics aim to comprehensively measure the dynamic changes of all metabolites and lipids that are present in biological systems. The use of ion mobility-mass spectrometry (IM-MS) for metabolomics and lipidomics has facilitated the separation and the identification of metabolites and lipids in complex biological samples. The collision cross-section (CCS) value derived from IM-MS is a valuable physiochemical property for the unambiguous identification of metabolites and lipids. However, CCS values obtained from experimental measurement and computational modeling are limited available, which significantly restricts the application of IM-MS. In this review, we will discuss the recently developed machine-learning based prediction approach, which could efficiently generate precise CCS databases in a large scale. We will also highlight the applications of CCS databases to support metabolomics and lipidomics.
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Affiliation(s)
- Zhiwei Zhou
- Interdisciplinary Research Center on Biology and Chemistry, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jia Tu
- Interdisciplinary Research Center on Biology and Chemistry, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Zheng-Jiang Zhu
- Interdisciplinary Research Center on Biology and Chemistry, and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, PR China.
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57
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Onjiko RM, Plotnick DO, Moody SA, Nemes P. Metabolic Comparison of Dorsal versus Ventral Cells Directly in the Live 8-cell Frog Embryo by Microprobe Single-cell CE-ESI-MS. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2017; 9:4964-4970. [PMID: 29062391 PMCID: PMC5650250 DOI: 10.1039/c7ay00834a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Single-cell mass spectrometry (MS) empowers the characterization of metabolomic changes as cells differentiate to different tissues during early embryogenesis. Using whole-cell dissection and capillary electrophoresis electrospray ionization (CE-ESI) MS, we recently uncovered metabolic cell-to-cell differences in the 8- and 16-cell embryo of the South African clawed frog (Xenopus laevis), raising the question whether metabolic cell heterogeneity is also detectable across the dorsal-ventral axis of the 8-cell embryo. Here, we tested this hypothesis directly in the live embryo by quantifying single-cell metabolism between the left dorsal-animal (D1L) and left ventral-animal (V1L) cell pairs in the same embryo using microprobe single-cell CE-ESI-MS in the positive ion mode. After quantifying ~70 molecular features, including 52 identified metabolites, that were reproducibly detected in both cells among n = 5 different embryos, we employed supervised multivariate data analysis based on partial least squares discriminant analysis (PLSDA) to compare metabolism between the cell types. Statistical analysis revealed that asparagine, glycine betaine, and a yet-unidentified molecule were statistically significantly enriched in the D1L cell compared to V1L (p < 0.05 and fold change ≥ 1.5). These results demonstrate that cells derived from the same hemisphere (animal pole) harbor different metabolic activity along the dorsal-ventral axis as early as the 8-cell stage. Apart from providing new evidence of metabolic cell heterogeneity during early embryogenesis, this study demonstrates that microprobe single-cell CE-ESI-MS enables the analysis of multiple single cells in the same live vertebrate embryo.
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Affiliation(s)
- Rosemary M. Onjiko
- Department of Chemistry, The George Washington University, Washington DC, 20052
| | - David O. Plotnick
- Department of Chemistry, The George Washington University, Washington DC, 20052
| | - Sally A. Moody
- Department of Anatomy and Regenerative Biology, The George Washington University, Washington DC, 20052
| | - Peter Nemes
- Department of Chemistry, The George Washington University, Washington DC, 20052
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58
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Zrinyi Z, Maasz G, Zhang L, Vertes A, Lovas S, Kiss T, Elekes K, Pirger Z. Effect of progesterone and its synthetic analogs on reproduction and embryonic development of a freshwater invertebrate model. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 190:94-103. [PMID: 28697460 DOI: 10.1016/j.aquatox.2017.06.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 06/15/2017] [Accepted: 06/27/2017] [Indexed: 05/14/2023]
Abstract
The presence of a mixture of progestogens at ng/L concentration levels in surface waters is a worldwide problem. Only a few studies explore the effect of progestogen treatment in a mixture as opposed to individual chemicals to shed light on how non-target species respond to these contaminants. In the present study, we used an invertebrate model species, Lymnaea stagnalis, exposed to a mixture of four progestogens (progesterone, levonorgestrel, drospirenone, and gestodene) in 10ng/L concentration for 3 weeks. Data at both physiological and cellular/molecular level were analyzed using the ELISA technique, stereomicroscopy combined with time lapse software, and capillary microsampling combined with mass spectrometry. The treatment of adult Lymnaeas caused reduced egg production, and low quality egg mass on the first week, compared to the control. Starting from the second week, the egg production, and the quality of egg mass were similar in both groups. At the end of the third week, the egg production and the vitellogenin-like protein content of the hepatopancreas were significantly elevated in the treated group. At the cellular level, accelerated cell proliferation was observed during early embryogenesis in the treated group. The investigation of metabolomic changes resulted significantly elevated hexose utilization in the single-cell zygote cytoplasm, and elevated adenylate energy charge in the egg albumen. These changes suggested that treated snails provided more hexose in the eggs in order to improve offspring viability. Our study contributes to the knowledge of physiological effect of equi-concentration progestogen mixture at environmentally relevant dose on non-target aquatic species.
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Affiliation(s)
- Zita Zrinyi
- MTA-ÖK BLI NAP_B Adaptive Neuroethology, Department of Experimental Zoology, Balaton Limnological Institute, MTA Center for Ecological Research, Tihany, Hungary
| | - Gabor Maasz
- MTA-ÖK BLI NAP_B Adaptive Neuroethology, Department of Experimental Zoology, Balaton Limnological Institute, MTA Center for Ecological Research, Tihany, Hungary
| | - Linwen Zhang
- Department of Chemistry, W. M. Keck Institute for Proteomics Technology and Applications, The George Washington University, WA, District of Columbia 20052, USA
| | - Akos Vertes
- Department of Chemistry, W. M. Keck Institute for Proteomics Technology and Applications, The George Washington University, WA, District of Columbia 20052, USA
| | - Sandor Lovas
- MTA-ÖK BLI NAP_B Adaptive Neuroethology, Department of Experimental Zoology, Balaton Limnological Institute, MTA Center for Ecological Research, Tihany, Hungary
| | - Tibor Kiss
- MTA-ÖK BLI, Department of Experimental Zoology, Balaton Limnological Institute, MTA Center for Ecological Research, Tihany, Hungary
| | - Karoly Elekes
- MTA-ÖK BLI, Department of Experimental Zoology, Balaton Limnological Institute, MTA Center for Ecological Research, Tihany, Hungary
| | - Zsolt Pirger
- MTA-ÖK BLI NAP_B Adaptive Neuroethology, Department of Experimental Zoology, Balaton Limnological Institute, MTA Center for Ecological Research, Tihany, Hungary.
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59
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Onjiko RM, Portero EP, Moody SA, Nemes P. In Situ Microprobe Single-Cell Capillary Electrophoresis Mass Spectrometry: Metabolic Reorganization in Single Differentiating Cells in the Live Vertebrate (Xenopus laevis) Embryo. Anal Chem 2017; 89:7069-7076. [PMID: 28434226 DOI: 10.1021/acs.analchem.7b00880] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Knowledge of single-cell metabolism would provide a powerful look into cell activity changes as cells differentiate to all the tissues of the vertebrate embryo. However, single-cell mass spectrometry technologies have not yet been made compatible with complex three-dimensional changes and rapidly decreasing cell sizes during early development of the embryo. Here, we bridge this technological gap by integrating capillary microsampling, microscale metabolite extraction, and capillary electrophoresis electrospray ionization mass spectrometry (CE-ESI-MS) to enable direct metabolic analysis of identified cells in the live frog embryo (Xenopus laevis). Microprobe CE-ESI-MS of <0.02% of the single-cell content allowed us to detect ∼230 different molecular features (positive ion mode), including 70 known metabolites, in single dorsal and ventral cells in 8-to-32-cell embryos. Relative quantification followed by multivariate and statistical analysis of the data found that microsampling enhanced detection sensitivity compared to whole-cell dissection by minimizing chemical interferences and ion suppression effects from the culture media. In addition, higher glutathione/oxidized glutathione ratios suggested that microprobed cells exhibited significantly lower oxidative stress than those dissected from the embryo. Fast (5 s/cell) and scalable microsampling with minimal damage to cells in the 8-cell embryo enabled duplicate and triplicate metabolic analysis of the same cell, which surprisingly continued to divide to the 16-cell stage. Last, we used microprobe single-cell CE-ESI-MS to uncover previously unknown reorganization of the single-cell metabolome as the dorsal progenitor cell from the 8-cell embryo formed the neural tissue fated clone through divisions to the 32-cell embryo, peering, for the first time, into the formation of metabolic single-cell heterogeneity during early development of a vertebrate embryo.
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Affiliation(s)
- Rosemary M Onjiko
- Department of Chemistry and ‡Department of Anatomy and Regenerative Biology, The George Washington University , Washington, D.C., 20052, United States
| | - Erika P Portero
- Department of Chemistry and ‡Department of Anatomy and Regenerative Biology, The George Washington University , Washington, D.C., 20052, United States
| | - Sally A Moody
- Department of Chemistry and ‡Department of Anatomy and Regenerative Biology, The George Washington University , Washington, D.C., 20052, United States
| | - Peter Nemes
- Department of Chemistry and ‡Department of Anatomy and Regenerative Biology, The George Washington University , Washington, D.C., 20052, United States
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60
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Yang Y, Huang Y, Wu J, Liu N, Deng J, Luan T. Single-cell analysis by ambient mass spectrometry. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.02.009] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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61
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Guillaume-Gentil O, Rey T, Kiefer P, Ibáñez AJ, Steinhoff R, Brönnimann R, Dorwling-Carter L, Zambelli T, Zenobi R, Vorholt JA. Single-Cell Mass Spectrometry of Metabolites Extracted from Live Cells by Fluidic Force Microscopy. Anal Chem 2017; 89:5017-5023. [PMID: 28363018 DOI: 10.1021/acs.analchem.7b00367] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Single-cell metabolite analysis provides valuable information on cellular function and response to external stimuli. While recent advances in mass spectrometry reached the sensitivity required to investigate metabolites in single cells, current methods commonly isolate and sacrifice cells, inflicting a perturbed state and preventing complementary analyses. Here, we propose a two-step approach that combines nondestructive and quantitative withdrawal of intracellular fluid with subpicoliter resolution using fluidic force microscopy, followed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. The developed method enabled the detection and identification of 20 metabolites recovered from the cytoplasm of individual HeLa cells. The approach was further validated in 13C-glucose feeding experiments, which showed incorporation of labeled carbon atoms into different metabolites. Metabolite sampling, followed by mass spectrometry measurements, enabled the preservation of the physiological context and the viability of the analyzed cell, providing opportunities for complementary analyses of the cell before, during, and after metabolite analysis.
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Affiliation(s)
- Orane Guillaume-Gentil
- Department of Biology, Institute of Microbiology, ETH Zurich , Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
| | - Timo Rey
- Department of Biology, Institute of Microbiology, ETH Zurich , Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
| | - Patrick Kiefer
- Department of Biology, Institute of Microbiology, ETH Zurich , Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
| | - Alfredo J Ibáñez
- Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, ETH Zurich , 8093 Zurich, Switzerland
| | - Robert Steinhoff
- Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, ETH Zurich , 8093 Zurich, Switzerland
| | - Rolf Brönnimann
- Swiss Federal Laboratories for Material Science and Technology EMPA , 8600 Dübendorf, Switzerland
| | - Livie Dorwling-Carter
- Department of Information Technology and Electrical Engineering, Institute for Biomedical Engineering, ETH Zurich , 8093 Zurich, Switzerland
| | - Tomaso Zambelli
- Department of Information Technology and Electrical Engineering, Institute for Biomedical Engineering, ETH Zurich , 8093 Zurich, Switzerland
| | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, ETH Zurich , 8093 Zurich, Switzerland
| | - Julia A Vorholt
- Department of Biology, Institute of Microbiology, ETH Zurich , Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
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62
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Hines KM, Herron J, Xu L. Assessment of altered lipid homeostasis by HILIC-ion mobility-mass spectrometry-based lipidomics. J Lipid Res 2017; 58:809-819. [PMID: 28167702 DOI: 10.1194/jlr.d074724] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 01/31/2017] [Indexed: 12/23/2022] Open
Abstract
Ion mobility-mass spectrometry (IM-MS) has proven to be a highly informative technique for the characterization of lipids from cells and tissues. We report the combination of hydrophilic-interaction liquid chromatography (HILIC) with traveling-wave IM-MS (TWIM-MS) for comprehensive lipidomics analysis. Main lipid categories such as glycerolipids, sphingolipids, and glycerophospholipids are separated on the basis of their lipid backbones in the IM dimension, whereas subclasses of each category are mostly separated on the basis of their headgroups in the HILIC dimension, demonstrating the orthogonality of HILIC and IM separations. Using our previously established lipid calibrants for collision cross-section (CCS) measurements in TWIM, we measured over 250 CCS values covering 12 lipid classes in positive and negative modes. The coverage of the HILIC-IM-MS method is demonstrated in the analysis of Neuro2a neuroblastoma cells exposed to benzalkonium chlorides (BACs) with C10 or C16 alkyl chains, which we have previously shown to affect gene expression related to cholesterol and lipid homeostasis. We found that BAC exposure resulted in significant changes to several lipid classes, including glycerides, sphingomyelins, phosphatidylcholines, and phosphatidylethanolamines. Our results indicate that BAC exposure modifies lipid homeostasis in a manner that is dependent upon the length of the BAC alkyl chain.
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Affiliation(s)
- Kelly M Hines
- Department of Medicinal Chemistry University of Washington, Seattle, WA 98195
| | - Josi Herron
- Department of Medicinal Chemistry University of Washington, Seattle, WA 98195; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195
| | - Libin Xu
- Department of Medicinal Chemistry University of Washington, Seattle, WA 98195; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195.
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63
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Abstract
In this review, we focus on an important aspect of ion mobility (IM) research, namely the reporting of quantitative ion mobility measurements in the form of the gas-phase collision cross section (CCS), which has provided a common basis for comparison across different instrument platforms and offers a unique form of structural information, namely size and shape preferences of analytes in the absence of bulk solvent. This review surveys the over 24,000 CCS values reported from IM methods spanning the era between 1975 to 2015, which provides both a historical and analytical context for the contributions made thus far, as well as insight into the future directions that quantitative ion mobility measurements will have in the analytical sciences. The analysis was conducted in 2016, so CCS values reported in that year are purposely omitted. In another few years, a review of this scope will be intractable, as the number of CCS values which will be reported in the next three to five years is expected to exceed the total amount currently published in the literature.
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Affiliation(s)
- Jody C May
- Department of Chemistry, Center for Innovative Technology, Vanderbilt Institute for Chemical Biology, Vanderbilt Institute for Integrative Biosystems Research and Education, Vanderbilt University , Nashville, Tennessee 37235, United States
| | - Caleb B Morris
- Department of Chemistry, Center for Innovative Technology, Vanderbilt Institute for Chemical Biology, Vanderbilt Institute for Integrative Biosystems Research and Education, Vanderbilt University , Nashville, Tennessee 37235, United States
| | - John A McLean
- Department of Chemistry, Center for Innovative Technology, Vanderbilt Institute for Chemical Biology, Vanderbilt Institute for Integrative Biosystems Research and Education, Vanderbilt University , Nashville, Tennessee 37235, United States
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64
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Zampieri M, Sekar K, Zamboni N, Sauer U. Frontiers of high-throughput metabolomics. Curr Opin Chem Biol 2017; 36:15-23. [PMID: 28064089 DOI: 10.1016/j.cbpa.2016.12.006] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 11/30/2016] [Accepted: 12/05/2016] [Indexed: 02/06/2023]
Abstract
Large scale metabolomics studies are increasingly used to investigate genetically different individuals and time-dependent responses to environmental stimuli. New mass spectrometric approaches with at least an order of magnitude more rapid analysis of small molecules within the cell's metabolome are now paving the way towards true high-throughput metabolomics, opening new opportunities in systems biology, functional genomics, drug discovery, and personalized medicine. Here we discuss the impact and advantages of the progress made in profiling large cohorts and dynamic systems with high temporal resolution and automated sampling. In both areas, high-throughput metabolomics is gaining traction because it can generate hypotheses on molecular mechanisms and metabolic regulation. We conclude with the current status of the less mature single cell analyses where high-throughput analytics will be indispensable to resolve metabolic heterogeneity in populations and compartmentalization of metabolites.
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Affiliation(s)
- Mattia Zampieri
- Institute of Molecular Systems Biology, ETH Zurich, Auguste-Piccard-Hof 1, CH-8093 Zurich, Switzerland
| | - Karthik Sekar
- Institute of Molecular Systems Biology, ETH Zurich, Auguste-Piccard-Hof 1, CH-8093 Zurich, Switzerland
| | - Nicola Zamboni
- Institute of Molecular Systems Biology, ETH Zurich, Auguste-Piccard-Hof 1, CH-8093 Zurich, Switzerland
| | - Uwe Sauer
- Institute of Molecular Systems Biology, ETH Zurich, Auguste-Piccard-Hof 1, CH-8093 Zurich, Switzerland.
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65
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Bergman HM, Lanekoff I. Profiling and quantifying endogenous molecules in single cells using nano-DESI MS. Analyst 2017; 142:3639-3647. [DOI: 10.1039/c7an00885f] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Nano-DESI MS enables sensitive molecular profiling and quantification of endogenous species in single cells in a higher throughput manner.
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66
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Introduction. Mass Spectrom (Tokyo) 2017. [DOI: 10.1007/978-3-319-54398-7_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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67
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Toyoda Y, Kashikura K, Soga T, Tagawa YI. Metabolomics of an in vitro liver model containing primary hepatocytes assembling around an endothelial cell network: comparative study on the metabolic stability and the effect of acetaminophen treatment. J Toxicol Sci 2017; 42:445-454. [DOI: 10.2131/jts.42.445] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Yu Toyoda
- Department of Pharmacy, The University of Tokyo Hospital
- Department of Biomolecular Engineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
| | | | | | - Yoh-ichi Tagawa
- Department of Biomolecular Engineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology
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68
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Fang L, Deng J, Yang Y, Wang X, Chen B, Liu H, Zhou H, Ouyang G, Luan T. Coupling solid-phase microextraction with ambient mass spectrometry: Strategies and applications. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.05.025] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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69
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Hines K, May JC, McLean JA, Xu L. Evaluation of Collision Cross Section Calibrants for Structural Analysis of Lipids by Traveling Wave Ion Mobility-Mass Spectrometry. Anal Chem 2016; 88:7329-36. [PMID: 27321977 PMCID: PMC4955523 DOI: 10.1021/acs.analchem.6b01728] [Citation(s) in RCA: 147] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 06/18/2016] [Indexed: 02/07/2023]
Abstract
Collision cross section (CCS) measurement of lipids using traveling wave ion mobility-mass spectrometry (TWIM-MS) is of high interest to the lipidomics field. However, currently available calibrants for CCS measurement using TWIM are predominantly peptides that display quite different physical properties and gas-phase conformations from lipids, which could lead to large CCS calibration errors for lipids. Here we report the direct CCS measurement of a series of phosphatidylcholines (PCs) and phosphatidylethanolamines (PEs) in nitrogen using a drift tube ion mobility (DTIM) instrument and an evaluation of the accuracy and reproducibility of PCs and PEs as CCS calibrants for phospholipids against different classes of calibrants, including polyalanine (PolyAla), tetraalkylammonium salts (TAA), and hexakis(fluoroalkoxy)phosphazines (HFAP), in both positive and negative modes in TWIM-MS analysis. We demonstrate that structurally mismatched calibrants lead to larger errors in calibrated CCS values while the structurally matched calibrants, PCs and PEs, gave highly accurate and reproducible CCS values at different traveling wave parameters. Using the lipid calibrants, the majority of the CCS values of several classes of phospholipids measured by TWIM are within 2% error of the CCS values measured by DTIM. The development of phospholipid CCS calibrants will enable high-accuracy structural studies of lipids and add an additional level of validation in the assignment of identifications in untargeted lipidomics experiments.
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Affiliation(s)
- Kelly
M. Hines
- Department
of Medicinal Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Jody C. May
- Department
of Chemistry, Center for Innovative Technology, Vanderbilt Institute
of Chemical Biology, Vanderbilt Institute for Integrative Biosystems
Research and Education, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - John A. McLean
- Department
of Chemistry, Center for Innovative Technology, Vanderbilt Institute
of Chemical Biology, Vanderbilt Institute for Integrative Biosystems
Research and Education, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Libin Xu
- Department
of Medicinal Chemistry, University of Washington, Seattle, Washington 98195, United States
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70
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Hu J, Jiang XX, Wang J, Guan QY, Zhang PK, Xu JJ, Chen HY. Synchronized Polarization Induced Electrospray: Comprehensively Profiling Biomolecules in Single Cells by Combining both Positive-Ion and Negative-Ion Mass Spectra. Anal Chem 2016; 88:7245-51. [DOI: 10.1021/acs.analchem.6b01490] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jun Hu
- State Key
Laboratory of Analytical Chemistry for Life Science and Collaborative
Innovation Center of Chemistry for Life Sciences, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiao-Xiao Jiang
- State Key
Laboratory of Analytical Chemistry for Life Science and Collaborative
Innovation Center of Chemistry for Life Sciences, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jiang Wang
- State Key
Laboratory of Analytical Chemistry for Life Science and Collaborative
Innovation Center of Chemistry for Life Sciences, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Qi-Yuan Guan
- State Key
Laboratory of Analytical Chemistry for Life Science and Collaborative
Innovation Center of Chemistry for Life Sciences, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Pan-Ke Zhang
- State Key
Laboratory of Analytical Chemistry for Life Science and Collaborative
Innovation Center of Chemistry for Life Sciences, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jing-Juan Xu
- State Key
Laboratory of Analytical Chemistry for Life Science and Collaborative
Innovation Center of Chemistry for Life Sciences, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hong-Yuan Chen
- State Key
Laboratory of Analytical Chemistry for Life Science and Collaborative
Innovation Center of Chemistry for Life Sciences, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210023, China
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Report on the 13th symposium on invertebrate neurobiology held 26-30 August 2015 at the Balaton Limnological Institute, MTA Centre for ecological research of the Hungarian Academy of Sciences, Tihany, Hungary. INVERTEBRATE NEUROSCIENCE 2016; 16:3. [PMID: 27149972 DOI: 10.1007/s10158-016-0186-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
This report summarizes the lectures and posters presented at the International Society for Invertebrate Neurobiology's 13th symposium held 26-30 August 2015, at the Balaton Limnological Institute, MTA Centre for Ecological Research, Tihany, Hungary. The symposium provided an opportunity for scientists working on a range of topics in invertebrate neurobiology to meet and present their research and discuss ways to advance the discipline.
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Jacobson RS, Thurston RL, Shrestha B, Vertes A. In Situ Analysis of Small Populations of Adherent Mammalian Cells Using Laser Ablation Electrospray Ionization Mass Spectrometry in Transmission Geometry. Anal Chem 2015; 87:12130-6. [PMID: 26558336 DOI: 10.1021/acs.analchem.5b02971] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Most cultured cells used for biomedical research are cultured adherently, and the requisite detachment prior to biochemical analysis might induce chemical changes. This is especially crucial if accurate metabolic measurements are desired, given the rapid turnover of metabolites in living organisms. There are only a few methods available for the nontargeted in situ analysis of small adherent cell populations. Here we show that laser ablation electrospray ionization (LAESI) mass spectrometry (MS) can be used to analyze adherent cells directly, while still attached to the culture surface. To reduce the size of the analyzed cell population, the spot size constraints of conventional focusing in reflection geometry (rg) LAESI had to be eliminated. By introducing transmission geometry (tg) LAESI and incorporating an objective with a high numerical aperture, spot sizes of 10-20 μm were readily achieved. As few as five adherent cells could be specifically selected for analysis in their culturing environment. The importance of in situ analysis was highlighted by comparing the metabolite composition of adherent versus suspended cells. For example, we observed that cells analyzed adherently yielded higher values for the adenylate energy charge (0.90 ± 0.09 for adherent cells vs 0.09 ± 0.03 for suspended cells). Additionally, due to the smaller focal spot size, tg-LAESI enabled the analysis of ∼20 times smaller cell populations compared to rg-LAESI.
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Affiliation(s)
- Rachelle S Jacobson
- Department of Chemistry, W. M. Keck Institute for Proteomics Technology and Applications, The George Washington University , Washington DC, 20052, United States
| | - Richard L Thurston
- Department of Chemistry, W. M. Keck Institute for Proteomics Technology and Applications, The George Washington University , Washington DC, 20052, United States
| | - Bindesh Shrestha
- Department of Chemistry, W. M. Keck Institute for Proteomics Technology and Applications, The George Washington University , Washington DC, 20052, United States
| | - Akos Vertes
- Department of Chemistry, W. M. Keck Institute for Proteomics Technology and Applications, The George Washington University , Washington DC, 20052, United States
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