1
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Mishra NR, Gutheil WG. Stereoselective Amine-omics Using Heavy Atom Isotope Labeled l- and d-Marfey's Reagents. J Am Soc Mass Spectrom 2024. [PMID: 38683793 DOI: 10.1021/jasms.4c00036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Biological amines and amino acids play essential roles in many biochemical processes. The chemical complexity of biological samples is challenging, and the selective identification and quantification of amines and amino acid stereoisomers would be very useful for amine-focused "amino-omics" studies. Many amines and amino acids are chiral, and their stereoisomers cannot be resolved on achiral media without chiral derivatization. In prior studies, we demonstrated the use of Marfey's reagent─a chiral derivatization reagent for amines and phenolic OH groups─for the LC-MS/MS resolution and quantification of amines and amino acid stereoisomers. In this study, a heavy atom isotope labeled Marfey's reagent approach for the stereoselective detection and quantification of amines and amino acids was developed. Heavy (13C2) l-Marfey's (Hl-Mar) and heavy (2H3) d-Marfey's (Hd-Mar) were synthesized from 13C2-l-Ala and 2H3-d-Ala, respectively. Both light and heavy Marfey's reagents were used to derivatize standard amine mixtures, which were analyzed by LC-QToF-HRMS. Aligned peak lists were comparatively analyzed by light vs heavy Mar mass differences to identify mono-, di-, and tri-Marfey's adducts and then by the retention time difference between l- and d-Mar derivatives to identify stereoisomers. This approach was then applied to identify achiral and chiral amine and amino acid components in a methicillin-resistant Staphylococcus aureus (MRSA) extract. This approach shows high analytical selectivity and reproducibility.
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Affiliation(s)
- Nitish R Mishra
- Division of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Missouri─Kansas City, Kansas City, Missouri 64108, United States
| | - William G Gutheil
- Division of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Missouri─Kansas City, Kansas City, Missouri 64108, United States
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2
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Zhang Y, Zhao H, Zhao J, Lv W, Jia X, Lu X, Zhao X, Xu G. Quantified Metabolomics and Lipidomics Profiles Reveal Serum Metabolic Alterations and Distinguished Metabolites of Seven Chronic Metabolic Diseases. J Proteome Res 2024. [PMID: 38407022 DOI: 10.1021/acs.jproteome.3c00760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
The co-occurrence of multiple chronic metabolic diseases is highly prevalent, posing a huge health threat. Clarifying the metabolic associations between them, as well as identifying metabolites which allow discrimination between diseases, will provide new biological insights into their co-occurrence. Herein, we utilized targeted serum metabolomics and lipidomics covering over 700 metabolites to characterize metabolic alterations and associations related to seven chronic metabolic diseases (obesity, hypertension, hyperuricemia, hyperglycemia, hypercholesterolemia, hypertriglyceridemia, fatty liver) from 1626 participants. We identified 454 metabolites were shared among at least two chronic metabolic diseases, accounting for 73.3% of all 619 significant metabolite-disease associations. We found amino acids, lactic acid, 2-hydroxybutyric acid, triacylglycerols (TGs), and diacylglycerols (DGs) showed connectivity across multiple chronic metabolic diseases. Many carnitines were specifically associated with hyperuricemia. The hypercholesterolemia group showed obvious lipid metabolism disorder. Using logistic regression models, we further identified distinguished metabolites of seven chronic metabolic diseases, which exhibited satisfactory area under curve (AUC) values ranging from 0.848 to 1 in discovery and validation sets. Overall, quantitative metabolome and lipidome data sets revealed widespread and interconnected metabolic disorders among seven chronic metabolic diseases. The distinguished metabolites are useful for diagnosing chronic metabolic diseases and provide a reference value for further clinical intervention and management based on metabolomics strategy.
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Affiliation(s)
- Yuqing Zhang
- School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Hui Zhao
- Department of the Health Checkup Center, The Second Hospital of Dalian Medical University, Dalian 116023, P. R. China
| | - Jinhui Zhao
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- University of Chinese Academy of Science, Beijing 100049, P. R. China
| | - Wangjie Lv
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- University of Chinese Academy of Science, Beijing 100049, P. R. China
| | - Xueni Jia
- Department of the Health Checkup Center, The Second Hospital of Dalian Medical University, Dalian 116023, P. R. China
| | - Xin Lu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Xinjie Zhao
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Guowang Xu
- School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- University of Chinese Academy of Science, Beijing 100049, P. R. China
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3
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Koch E, Löwen A, Kampschulte N, Plitzko K, Wiebel M, Rund KM, Willenberg I, Schebb NH. Beyond Autoxidation and Lipoxygenases: Fatty Acid Oxidation Products in Plant Oils. J Agric Food Chem 2023; 71:13092-13106. [PMID: 37624576 DOI: 10.1021/acs.jafc.3c02724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
For decades, research on oxidation of linoleic acid (LA, C18:2 n6) and α-linolenic acid (ALA, C18:3 n3) in plant oils has focused on autoxidatively formed and lipoxygenase-derived 9-hydro(pero)xy- and 13-hydro(pero)xy-LA and -ALA. Here, using a non-targeted approach, we show that other hydroxy fatty acids are more abundant in plant oils. Liquid chromatography-mass spectrometry and gas chromatography-mass spectrometry analyses unveiled highly abundant peaks in flaxseed and rapeseed oils. Using authentic reference standards, seven of the peaks were identified as 9-, 10-, 12-, 13-, and 15-HODE as well as 9- and 13-HOTrE. Additionally, six peaks were characterized based on the retention time, the exact mass of the [M-H]- ion, and its fragment ions as 16-OH-C18:3, 18-OH-C18:3, three isomers of 12-OH-C18:2, and one of 15-OH-C18:2. 16-OH-C18:3 and 18-OH-C18:3 were tentatively identified as 16-OH-ALA and 18-OH-ALA, respectively, based on autoxidation and terminal hydroxylation of ALA using CYP4F2. Investigation of formation pathways suggests that fatty acid desaturase 3 is involved in the formation of the 12-OH-C18:2 isomers, 15-HODE, and its isomer. The dominantly occurring 12-OH-C18:2 isomer was identified as 12R,S-OH-9Z,15Z-octadecadienoic acid (densipolic acid) based on a synthetic standard. The characterized oxylipins occurred in cold-pressed flaxseed and rapeseed oils at concentrations of up to 0.1 g/100 g and thus about sixfold higher than the well-known 9-hydro(pero)xy- and 13-hydro(pero)xy-LA and -ALA. Concentrations in sunflower oil were lower but increased when oil was pressed from preheated seeds. Overall, this study provides fundamental new information about the occurrence of oxidized fatty acids in plant oils, having the potential to characterize their quality and authenticity.
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Affiliation(s)
- Elisabeth Koch
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, Wuppertal 42119, Germany
| | - Ariane Löwen
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, Wuppertal 42119, Germany
| | - Nadja Kampschulte
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, Wuppertal 42119, Germany
| | - Kathrin Plitzko
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, Wuppertal 42119, Germany
| | - Michelle Wiebel
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, Wuppertal 42119, Germany
| | - Katharina M Rund
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, Wuppertal 42119, Germany
| | - Ina Willenberg
- Department of Safety and Quality of Cereals, Max Rubner-Institut (MRI) - Federal Research Institute of Nutrition and Food, Schützenberg 12, Detmold 32756, Germany
| | - Nils Helge Schebb
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, Wuppertal 42119, Germany
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4
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Mi YG, Xu XY, Hong LL, Jiang MT, Chen BX, Li XH, Wang HD, Zou YD, Zhao X, Li Z, Guo DA, Yang WZ. Comparative Characterization of the Ginsenosides from Six Panax Herbal Extracts and Their In Vitro Rat Gut Microbial Metabolites by Advanced Liquid Chromatography-Mass Spectrometry Approaches. J Agric Food Chem 2023. [PMID: 37294034 DOI: 10.1021/acs.jafc.3c01093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ginseng extracts are extensively used as raw materials for food supplements and herbal medicines. This study aimed to characterize ginsenosides obtained from six Panax plant extracts (Panax ginseng, red ginseng, Panax quinquefolius, Panax notoginseng, Panax japonicus, and Panax japonicus var. major) and compared them with their in vitro metabolic profiles mediated by rat intestinal microbiota. Ultrahigh-performance liquid chromatography/ion mobility-quadrupole time-of-flight mass spectrometry (UHPLC/IM-QTOF-MS) with scheduled multiple reaction monitoring (sMRM) quantitation methods were developed to characterize and compare the ginsenoside composition of the different extracts. After in vitro incubation, 248 ginsenosides/metabolites were identified by UHPLC/IM-QTOF-MS in six biotransformed samples. Deglycosylation was determined to be the main metabolic pathway of ginsenosides, and protopanaxadiol-type and oleanolic acid-type saponins were easier to be easily metabolized. Compared with the ginsenosides in plant extracts, those remaining in six biotransformed samples were considerably fewer after biotransformation for 8 h. However, the compositional differences in four subtypes of the ginsenosides among the six Panax plants became more distinct.
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Affiliation(s)
- Yue-Guang Mi
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
| | - Xiao-Yan Xu
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
| | - Li-Li Hong
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
| | - Mei-Ting Jiang
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
| | - Bo-Xue Chen
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
| | - Xiao-Hang Li
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
| | - Hong-da Wang
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
| | - Ya-Dan Zou
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
| | - Xin Zhao
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
| | - Zheng Li
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - De-An Guo
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Shanghai Research Center for Modernization of Traditional Chinese Medicine, National Engineering Laboratory for TCM Standardization Technology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, China
| | - Wen-Zhi Yang
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China
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5
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Koch E, Löwen A, Nikolay S, Willenberg I, Schebb NH. Trans-Hydroxy, Trans-Epoxy, and Erythro-dihydroxy Fatty Acids Increase during Deep-Frying. J Agric Food Chem 2023; 71:7508-7513. [PMID: 37141304 DOI: 10.1021/acs.jafc.3c00964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Deep-frying of food is a common cooking technique causing thermal oxidation of fatty acids (FA). Here, we investigated for the first time the formation of hydroxy-, epoxy- and dihydroxy-FA derived from oleic, linoleic (LA), and α-linolenic acid (ALA) during frying. Potato chips were fried in high-oleic sunflower oil for 4 × 5 cycles on 2 days, and the oil was comprehensively analyzed by liquid chromatography-tandem mass spectrometry. During frying, the E,Z-9- and E,Z-13-hydroperoxy-LA and -ALA concentrations decrease while their corresponding hydroxy-FA remain constant. The concentrations of both E,E-9-/13-hydroperoxy-LA and E,E-9-/13-hydroxy-LA increase with the frying cycles, which is also found for the concentration of trans-epoxy-FA. The increase in trans-epoxy-FA is more pronounced than that of the corresponding cis-epoxy-FA, exceeding their concentrations on the second day of frying. This selective change in the cis-/trans-epoxy-FA ratio is also observed for their hydrolysis products: concentrations of erythro-dihydroxy-FA, derived from trans-epoxy-FA, increase during frying stronger than threo-dihydroxy-FA derived from cis-epoxy-FA. Based on these data, we suggest that the ratio of E,E-/E,Z-hydroxy-FA, in combination with the cis-/trans-epoxy-FA ratio, as well as the threo-/erythro-dihydroxy-FA ratio are promising new parameters to evaluate the heating of edible oils and to characterize the status of frying oils.
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Affiliation(s)
- Elisabeth Koch
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Ariane Löwen
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Sharline Nikolay
- Department of Safety and Quality of Cereals, Max Rubner-Institut (MRI)─Federal Research Institute of Nutrition and Food, Schützenberg 12, 32756 Detmold, Germany
| | - Ina Willenberg
- Department of Safety and Quality of Cereals, Max Rubner-Institut (MRI)─Federal Research Institute of Nutrition and Food, Schützenberg 12, 32756 Detmold, Germany
| | - Nils Helge Schebb
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
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6
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Narita N, Yamada R, Kakehi M, Kimura H. Diurnal Fluctuations of Orexin-A and -B in Cynomolgus Monkey Cerebrospinal Fluid Determined by a Novel Analytical Method Using Antiadsorptive Additive Treatment Followed by Nanoflow Liquid Chromatography-High-Resolution Mass Spectrometry. ACS Chem Neurosci 2023; 14:609-618. [PMID: 36719857 PMCID: PMC9936545 DOI: 10.1021/acschemneuro.2c00370] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Orexin-A (OXA) and -B (OXB) are involved in the regulation of multiple physiological functions including the sleep-wake states; therefore, it is critical to monitor their levels under various conditions. Unfortunately, the widely used radioimmunoassay has insufficient specificity for OXA. Although liquid chromatography-tandem mass spectrometry (LC-MS/MS) has higher specificity for OXA, previously reported OXA levels in human cerebrospinal fluid (CSF) measured using this technique are still inconsistent. Moreover, to the best of our knowledge, OXB has not been detected in the CSF. In this study, we established a novel method for OXA and OXB measurement. We noticed that OXA and OXB in the CSF was sticky; thus, citric acid and Tween 80 were used to prevent their nonspecific binding. Then, highly specific and sensitive nanoflow liquid chromatography-high-resolution mass spectrometry (nanoLC-HRMS) was used to measure OXA and OXB levels. Evaluation of the diurnal fluctuations of OXA and OXB in cisternal and lumbar CSF samples from cynomolgus monkeys revealed a sharp increase in the early light period, followed by a gradual increase to the maximum levels at the end of the light period, and then a sharp drop to the minimum levels during the early dark period. OXB levels were lower than OXA levels in cisternal CSF. Although basal OXA levels in individual monkeys showed substantial variations, the ratios between the maximum and minimum OXA levels of each monkey were similar. Our method for accurate OXA and OXB measurement should help improve our knowledge of orexin biology.
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Affiliation(s)
- Naohiro Narita
- Drug
Metabolism and Pharmacokinetics Laboratory, Research, Takeda Pharmaceutical Company Limited, 26-1 Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Ryuji Yamada
- Neuroscience
Drug Discovery Unit, Research, Takeda Pharmaceutical
Company Limited, 26-1 Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Masaaki Kakehi
- Drug
Metabolism and Pharmacokinetics Laboratory, Research, Takeda Pharmaceutical Company Limited, 26-1 Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Haruhide Kimura
- Neuroscience
Drug Discovery Unit, Research, Takeda Pharmaceutical
Company Limited, 26-1 Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan,
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7
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Solhtalab M, Moller SR, Gu AZ, Jaisi D, Aristilde L. Selectivity in Enzymatic Phosphorus Recycling from Biopolymers: Isotope Effect, Reactivity Kinetics, and Molecular Docking with Fungal and Plant Phosphatases. Environ Sci Technol 2022; 56:16441-16452. [PMID: 36283689 PMCID: PMC9670850 DOI: 10.1021/acs.est.2c04948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/05/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Among ubiquitous phosphorus (P) reserves in environmental matrices are ribonucleic acid (RNA) and polyphosphate (polyP), which are, respectively, organic and inorganic P-containing biopolymers. Relevant to P recycling from these biopolymers, much remains unknown about the kinetics and mechanisms of different acid phosphatases (APs) secreted by plants and soil microorganisms. Here we investigated RNA and polyP dephosphorylation by two common APs, a plant purple AP (PAP) from sweet potato and a fungal phytase from Aspergillus niger. Trends of δ18O values in released orthophosphate during each enzyme-catalyzed reaction in 18O-water implied a different extent of reactivity. Subsequent enzyme kinetics experiments revealed that A. niger phytase had 10-fold higher maximum rate for polyP dephosphorylation than the sweet potato PAP, whereas the sweet potato PAP dephosphorylated RNA at a 6-fold faster rate than A. niger phytase. Both enzymes had up to 3 orders of magnitude lower reactivity for RNA than for polyP. We determined a combined phosphodiesterase-monoesterase mechanism for RNA and terminal phosphatase mechanism for polyP using high-resolution mass spectrometry and 31P nuclear magnetic resonance, respectively. Molecular modeling with eight plant and fungal AP structures predicted substrate binding interactions consistent with the relative reactivity kinetics. Our findings implied a hierarchy in enzymatic P recycling from P-polymers by phosphatases from different biological origins, thereby influencing the relatively longer residence time of RNA versus polyP in environmental matrices. This research further sheds light on engineering strategies to enhance enzymatic recycling of biopolymer-derived P, in addition to advancing environmental predictions of this P recycling by plants and microorganisms.
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Affiliation(s)
- Mina Solhtalab
- Department
of Biological and Environmental Engineering, College of Agriculture
and Life Sciences, Cornell University, Ithaca, New York 14853, United States
- Department
of Civil and Environmental Engineering, McCormick School of Engineering
and Applied Science, Northwestern University, Evanston, Illinois 60208, United States
| | - Spencer R. Moller
- Department
of Plant and Soil Sciences, University of
Delaware, Newark, Delaware 19716, United States
| | - April Z. Gu
- School
of Civil and Environmental Engineering, College of Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Deb Jaisi
- Department
of Plant and Soil Sciences, University of
Delaware, Newark, Delaware 19716, United States
| | - Ludmilla Aristilde
- Department
of Biological and Environmental Engineering, College of Agriculture
and Life Sciences, Cornell University, Ithaca, New York 14853, United States
- Department
of Civil and Environmental Engineering, McCormick School of Engineering
and Applied Science, Northwestern University, Evanston, Illinois 60208, United States
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8
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Bai YL, Xiong CF, Yin X, Ye T, Cai BD, Song WL, Feng YQ. Screening and Identification of Potential Abscisic Acid Catabolites by Chemical Labeling-Assisted Ultrahigh-Performance Liquid Chromatography Coupled with High-Resolution Mass Spectrometry. J Agric Food Chem 2022; 70:8808-8818. [PMID: 35796587 DOI: 10.1021/acs.jafc.2c02190] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this study, a screening strategy was established based on ultrahigh-performance liquid chromatography coupled with high-resolution mass spectrometry assisted by chemical isotope labeling (CIL-UPLC-HRMS) for screening and identifying abscisic acid (ABA) catabolites. Based on the structures of known ABA catabolites, this strategy first proposed the structures of catabolites to be discovered. Afterward, a pair of isotope reagents N,N-2-dimethylaminoethylamine (DMED) and d4-DMED were used as labeling reagents to label the carboxyl groups in ABA and its catabolites. Then, the mass-to-charge ratio (m/z) of DMED- and d4-DMED-labeled ABA catabolites was calculated based on the labeling schema. In light of the characteristic fragmentation patterns of the DMED-labeled standards of ABA and its catabolites, screening criteria were formulated. Using our strategy, ABA, t-ABA, and 18 ABA catabolites were identified from seven plant samples. Of the identified catabolites, 16 were known, and to our knowledge, 2 were previously unidentified. Our findings contribute to ABA catabolic network improvement.
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Affiliation(s)
- Ya-Li Bai
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Cai-Feng Xiong
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Xiaoming Yin
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Tiantian Ye
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Bao-Dong Cai
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Wen-Li Song
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Yu-Qi Feng
- Department of Chemistry, Wuhan University, Wuhan 430072, China
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9
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Peng J, Sun J, Yang MI, Gibson RM, Arts EJ, Olabode AS, Poon AFY, Wang X, Wheeler AR, Edwards EA, Peng H. Early Warning Measurement of SARS-CoV-2 Variants of Concern in Wastewaters by Mass Spectrometry. Environ Sci Technol Lett 2022; 9:638-644. [PMID: 37552744 PMCID: PMC9236213 DOI: 10.1021/acs.estlett.2c00280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/07/2022] [Accepted: 06/15/2022] [Indexed: 05/24/2023]
Abstract
Wastewater surveillance has rapidly emerged as an early warning tool to track COVID-19. However, the early warning measurement of new SARS-CoV-2 variants of concern (VOCs) in wastewaters remains a major challenge. We herein report a rapid analytical strategy for quantitative measurement of VOCs, which couples nested polymerase chain reaction and liquid chromatography-mass spectrometry (nPCR-LC-MS). This method showed a greater selectivity than the current allele-specific quantitative PCR (AS-qPCR) for tracking new VOC and allowed the detection of multiple signature mutations in a single measurement. By measuring the Omicron variant in wastewaters across nine Ontario wastewater treatment plants serving over a three million population, the nPCR-LC-MS method demonstrated a better quantification accuracy than next-generation sequencing (NGS), particularly at the early stage of community spreading of Omicron. This work addresses a major challenge for current SARS-CoV-2 wastewater surveillance by rapidly and accurately measuring VOCs in wastewaters for early warning.
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Affiliation(s)
- Jiaxi Peng
- Department of Chemistry, University of
Toronto, 80 St George Street, Toronto, Ontario M5S 3H6,
Canada
- Donnelly Centre for Cellular and Biomolecular
Research, University of Toronto, 160 College Street, Toronto,
Ontario M5S 3E1, Canada
- Institute of Biomedical Engineering,
University of Toronto, 164 College Street, Toronto, Ontario
M5S 3G9, Canada
| | - Jianxian Sun
- Department of Chemistry, University of
Toronto, 80 St George Street, Toronto, Ontario M5S 3H6,
Canada
| | - Minqing Ivy Yang
- Department of Chemical Engineering and Applied
Chemistry, University of Toronto, 200 College Street, Toronto,
Ontario M5S 3E5, Canada
| | - Richard M. Gibson
- Department of Microbiology and Immunology,
Western University, 1151 Richmond Street, London, Ontario N6A
5C1, Canada
| | - Eric J. Arts
- Department of Microbiology and Immunology,
Western University, 1151 Richmond Street, London, Ontario N6A
5C1, Canada
| | - Abayomi S. Olabode
- Department of Microbiology and Immunology,
Western University, 1151 Richmond Street, London, Ontario N6A
5C1, Canada
| | - Art F. Y. Poon
- Department of Microbiology and Immunology,
Western University, 1151 Richmond Street, London, Ontario N6A
5C1, Canada
| | - Xianyao Wang
- Department of Chemistry, University of
Toronto, 80 St George Street, Toronto, Ontario M5S 3H6,
Canada
| | - Aaron R. Wheeler
- Department of Chemistry, University of
Toronto, 80 St George Street, Toronto, Ontario M5S 3H6,
Canada
- Donnelly Centre for Cellular and Biomolecular
Research, University of Toronto, 160 College Street, Toronto,
Ontario M5S 3E1, Canada
- Institute of Biomedical Engineering,
University of Toronto, 164 College Street, Toronto, Ontario
M5S 3G9, Canada
| | - Elizabeth A. Edwards
- Department of Chemical Engineering and Applied
Chemistry, University of Toronto, 200 College Street, Toronto,
Ontario M5S 3E5, Canada
| | - Hui Peng
- Department of Chemistry, University of
Toronto, 80 St George Street, Toronto, Ontario M5S 3H6,
Canada
- School of the Environment, University of
Toronto, 80 St George Street, Toronto, Ontario M5S 3H6,
Canada
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10
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Chen X, Peng X, Sun X, Pan L, Shi J, Gao Y, Lei Y, Jiang F, Li R, Liu Y, Xu YJ. Development and Application of Feature-Based Molecular Networking for Phospholipidomics Analysis. J Agric Food Chem 2022; 70:7815-7825. [PMID: 35709392 DOI: 10.1021/acs.jafc.2c01770] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Phospholipids are small but critical lipids in milk. Conventional lipidomics is a powerful method for the analysis of lipids in milk. Although the number of lipidomics software has drastically increased over the past five years, reducing false positives and obtaining structurally accurate annotations of phospholipids remain a significant challenge. In this study, we developed a rapid and accurate method for measuring a wide spectrum of phospholipids in milk. The developed approach that employed information-dependent acquisition (IDA) mode and feature-based molecular networking has exhibited better performance on data processing and lipid annotation when compared with sequential window acquisition of all theoretical mass spectra (SWATH) and MS-DIAL. This validated method was further evaluated using three kinds of sheep milk. A total of 150 phospholipids were identified, including rarely reported phospholipids containing ethers or vinyl ethers. The result indicated that phospholipids could be used as potential markers to distinguish sheep milk from different varieties and origins. The experimental and computational methods provide a rapid and reliable method for the investigation of phospholipids in milk.
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Affiliation(s)
- Xiaoying Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Reacher Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China
| | - Xiaoyu Peng
- Ausnutria Dairy (China) Co., Ltd., Changsha 410200, Hunan, People's Republic of China
| | - Xian Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Reacher Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China
| | - Lina Pan
- Ausnutria Dairy (China) Co., Ltd., Changsha 410200, Hunan, People's Republic of China
| | - Jiachen Shi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Reacher Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China
| | - Yu Gao
- Ausnutria Dairy (China) Co., Ltd., Changsha 410200, Hunan, People's Republic of China
| | - Yuanluo Lei
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Reacher Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China
| | - Fan Jiang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Reacher Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China
| | - Ruizhi Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Reacher Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China
| | - Yuanfa Liu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Reacher Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China
| | - Yong-Jiang Xu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Reacher Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China
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11
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Zhang J, Hungerford NL, Yates HSA, Smith TJ, Fletcher MT. How is Trehalulose Formed by Australian Stingless Bees? - An Intermolecular Displacement of Nectar Sucrose. J Agric Food Chem 2022; 70:6530-6539. [PMID: 35584080 DOI: 10.1021/acs.jafc.2c01732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Trehalulose, a rare sucrose isomer, is a dominant sugar in stingless bee honey, with traces of the trisaccharide erlose. Incubating sucrose solutions with macerated stingless bee parts (head, thorax, and abdomen) from Tetragonula carbonaria, we observed that sucrose isomerization occurs predominantly in the head incubations, with trehalulose constituting 76.2-80.0% of total detected sugar. By contrast, sucrose hydrolysis occurred in stingless bee abdomen incubations, with glucose and fructose observed as 48.6-51.7% and 48.3-49.7%, respectively, of total detected sugar. Incubating glucose/fructose (1:1) solutions with any bee part did not result in trehalulose formation. In addition, by tracing the 13C isotope-labeled monosaccharide moieties throughout the isomerization from sucrose to trehalulose and erlose, for the first time, the mechanism was established as an enzymatic double displacement reaction. Sucrose acts as a glucose donor giving a β-d-glucosyl enzyme intermediate with fructose release as demonstrated by mixed isotope products. Glucosylation of fructose (inter- or intramolecularly) with isomerization forms trehalulose (favorable), while glucosylation of sucrose forms erlose (less favorable).
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Affiliation(s)
- Jiali Zhang
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Health and Food Science Precinct, Coopers Plains, QLD 4108, Australia
| | - Natasha L Hungerford
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Health and Food Science Precinct, Coopers Plains, QLD 4108, Australia
| | - Hans S A Yates
- Forensic and Scientific Services, Queensland Health, Health and Food Sciences Precinct, Coopers Plains, QLD 4108, Australia
| | - Tobias J Smith
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Mary T Fletcher
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Health and Food Science Precinct, Coopers Plains, QLD 4108, Australia
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12
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Lara-Jacobo L, Islam G, Desaulniers JP, Kirkwood AE, Simmons DBD. Detection of SARS-CoV-2 Proteins in Wastewater Samples by Mass Spectrometry. Environ Sci Technol 2022; 56:5062-5070. [PMID: 35348338 PMCID: PMC8982736 DOI: 10.1021/acs.est.1c04705] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 05/26/2023]
Abstract
The recent COVID-19 pandemic overwhelmed the health system worldwide, and there was a need to track outbreaks and try to use this information as an early warning system. Wastewater-based epidemiology (WBE) enabled detection of the SARS-CoV-2 virus in wastewater treatment plant influents. Until now, the most used technique for this detection has been the quantitative polymerase chain reaction (qPCR)-based quantification of SARS-CoV-2 RNA. This study proposes a mass spectrometry (MS)-based method that detected specific SARS-CoV-2 proteins in wastewater, 5 and 6 days ahead of the case data for two municipalities. We identified unique peptides of eight proteins related to the SARS-CoV-2 virus and COVID-19 infection. We detected the nonstructural protein (NSP) pp1ab (transcribed after host cell infection) most frequently in all of the samples. As a result, we suspect that in the active cases of COVID-19, the pp1ab protein is present in high abundance in the urine and feces and that this protein could be used as an alternative biomarker. These data were collected before mass vaccination occurred in the population.
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13
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Sandbaumhüter FA, Nezhyva M, Eriksson O, Engberg A, Kreuger J, Andrén PE, Jansson ET. Well-Plate μFASP for Proteomic Analysis of Single Pancreatic Islets. J Proteome Res 2022; 21:1167-1174. [PMID: 35293755 PMCID: PMC8981318 DOI: 10.1021/acs.jproteome.2c00047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Filter-aided sample preparation (FASP) is widely used in bottom-up proteomics for tryptic digestion. However, the sample recovery yield of this method is limited by the amount of the starting material. While ∼100 ng of digested protein is sufficient for thorough protein identification, proteomic information gets lost with a protein content <10 μg due to incomplete peptide recovery from the filter. We developed and optimized a flexible well-plate μFASP device and protocol that is suitable for an ∼1 μg protein sample. In 1 μg of HeLa digest, we identified 1295 ± 10 proteins with μFASP followed by analysis with liquid chromatography-mass spectrometry. In contrast, only 524 ± 5 proteins were identified with the standard FASP protocol, while 1395 ± 4 proteins were identified in 20 μg after standard FASP as a benchmark. Furthermore, we conducted a combined peptidomic and proteomic study of single pancreatic islets with well-plate μFASP. Here, we separated neuropeptides and digested the remaining on-filter proteins for bottom-up proteomic analysis. Our results indicate inter-islet heterogeneity for the expression of proteins involved in glucose catabolism, pancreatic hormone processing, and secreted peptide hormones. We consider our method to provide a useful tool for proteomic characterization of samples where the biological material is scarce. All proteomic data are available under DOI: 10.6019/PXD029039.
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Affiliation(s)
| | - Mariya Nezhyva
- Department of Pharmaceutical Biosciences, Uppsala University, Uppsala 751 24, Sweden
| | - Olle Eriksson
- Department of Medical Cell Biology, Uppsala University, Uppsala 751 23, Sweden
| | - Adam Engberg
- Department of Medical Cell Biology, Uppsala University, Uppsala 751 23, Sweden
| | - Johan Kreuger
- Department of Medical Cell Biology, Uppsala University, Uppsala 751 23, Sweden
| | - Per E Andrén
- Department of Pharmaceutical Biosciences, Uppsala University, Uppsala 751 24, Sweden.,Science for Life Laboratory, Spatial Mass Spectrometry, Uppsala University, Uppsala 751 24, Sweden
| | - Erik T Jansson
- Department of Pharmaceutical Biosciences, Uppsala University, Uppsala 751 24, Sweden
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14
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Xing S, Yu H, Liu M, Jia Q, Sun Z, Fang M, Huan T. Recognizing Contamination Fragment Ions in Liquid Chromatography-Tandem Mass Spectrometry Data. J Am Soc Mass Spectrom 2021; 32:2296-2305. [PMID: 33739814 DOI: 10.1021/jasms.0c00478] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Tandem mass spectral (MS/MS) data in liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis are often contaminated as the selection of precursor ions is based on a low-resolution quadrupole mass filter. In this work, we developed a strategy to differentiate contamination fragment ions (CFIs) from true fragment ions (TFIs) in an MS/MS spectrum. The rationale is that TFIs should coelute with their parent ions, but CFIs should not. To assess coelution, we performed a parallel LC-MS/MS analysis in data-independent acquisition (DIA) with all-ion-fragmentation (AIF) mode. Using the DIA (AIF) data, peak-peak correlation (PPC) score is calculated between the extracted ion chromatogram (EIC) of the fragment ion using the MS/MS scans and the EIC of the precursor ion using the MS1 scans. A high PPC score is an indication of TFIs, and a low PPC score is an indication of CFIs. Tested using metabolomics data generated by high resolution QTOF and Orbitrap MS from various vendors in different LC-MS configurations, we found that more than 70% of the fragment ions have PPC scores < 0.8 and identified three common sources of CFIs, including (1) solvent contamination, (2) adjacent chemical contamination, and (3) undetermined signals from artifacts and noise. Combining PPC scores with other precursor and fragment ion information, we further developed a machine learning model that can robustly and conservatively predict CFIs. Incorporating the machine learning model, we created an R program, MS2Purifier, to automatically recognize CFIs and clean MS/MS spectra of metabolic features in LC-MS/MS data with high sensitivity and specificity.
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Affiliation(s)
- Shipei Xing
- Department of Chemistry, Faculty of Science, University of British Columbia, Vancouver Campus, 2036 Main Mall, Vancouver, V6T 1Z1 British Columbia, Canada
| | - Huaxu Yu
- Department of Chemistry, Faculty of Science, University of British Columbia, Vancouver Campus, 2036 Main Mall, Vancouver, V6T 1Z1 British Columbia, Canada
| | - Min Liu
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Qingquan Jia
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, Henan Province 450052, People's Republic of China
- Henan Engineering Research Center of Clinical Mass Spectrometry for Precision Medicine, No. 1 Jianshe East Road, Zhengzhou, Henan Province 450052, People's Republic of China
| | - Zhi Sun
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, Henan Province 450052, People's Republic of China
- Henan Engineering Research Center of Clinical Mass Spectrometry for Precision Medicine, No. 1 Jianshe East Road, Zhengzhou, Henan Province 450052, People's Republic of China
| | - Mingliang Fang
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Tao Huan
- Department of Chemistry, Faculty of Science, University of British Columbia, Vancouver Campus, 2036 Main Mall, Vancouver, V6T 1Z1 British Columbia, Canada
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15
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Pereira KL, Ward MW, Wilkinson JL, Sallach JB, Bryant DJ, Dixon WJ, Hamilton JF, Lewis AC. An Automated Methodology for Non-targeted Compositional Analysis of Small Molecules in High Complexity Environmental Matrices Using Coupled Ultra Performance Liquid Chromatography Orbitrap Mass Spectrometry. Environ Sci Technol 2021; 55:7365-7375. [PMID: 34006107 PMCID: PMC8277131 DOI: 10.1021/acs.est.0c08208] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The life-critical matrices of air and water are among the most complex chemical mixtures that are ever encountered. Ultrahigh-resolution mass spectrometers, such as the Orbitrap, provide unprecedented analytical capabilities to probe the molecular composition of such matrices, but the extraction of non-targeted chemical information is impractical to perform via manual data processing. Automated non-targeted tools rapidly extract the chemical information of all detected compounds within a sample dataset. However, these methods have not been exploited in the environmental sciences. Here, we provide an automated and (for the first time) rigorously tested methodology for the non-targeted compositional analysis of environmental matrices using coupled liquid chromatography-mass spectrometric data. First, the robustness and reproducibility was tested using authentic standards, evaluating performance as a function of concentration, ionization potential, and sample complexity. The method was then used for the compositional analysis of particulate matter and surface waters collected from worldwide locations. The method detected >9600 compounds in the individual environmental samples, arising from critical pollutant sources, including carcinogenic industrial chemicals, pesticides, and pharmaceuticals among others. This methodology offers considerable advances in the environmental sciences, providing a more complete assessment of sample compositions while significantly increasing throughput.
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Affiliation(s)
- Kelly L. Pereira
- Wolfson
Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York YO10 5DD, U.K.
- . Tel.: +44 (0)1904 321220
| | - Martyn W. Ward
- Wolfson
Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York YO10 5DD, U.K.
| | - John L. Wilkinson
- Department
of Environment and Geography, University
of York, York YO10 5NG, U.K.
| | | | - Daniel J. Bryant
- Wolfson
Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York YO10 5DD, U.K.
| | - William J. Dixon
- Wolfson
Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York YO10 5DD, U.K.
| | - Jacqueline F. Hamilton
- Wolfson
Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York YO10 5DD, U.K.
| | - Alastair C. Lewis
- Wolfson
Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York YO10 5DD, U.K.
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16
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Solhtalab M, Klein AR, Aristilde L. Hierarchical Reactivity of Enzyme-Mediated Phosphorus Recycling from Organic Mixtures by Aspergillus niger Phytase. J Agric Food Chem 2021; 69:2295-2305. [PMID: 33305954 DOI: 10.1021/acs.jafc.0c05924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Biological recycling of inorganic phosphorus (Pi) from organic phosphorus (Po) compounds by phosphatase-type enzymes, including phytases, is an important contributor to the pool of bioavailable P to plants and microorganisms. However, studies of mixed-substrate reactions with these enzymes are lacking. Here, we explore the reactivity of a phytase extract from the fungus Aspergillus niger toward a heterogeneous mixture containing, in addition to phytate, different structures of environmentally relevant Po compounds such as ribonucleotides and sugar phosphates. Using a high-resolution liquid chromatography-mass spectrometry method to monitor simultaneously the parent Po compounds and their by-products, we captured sequential substrate-specific evolution of Pi from the mixture, with faster hydrolysis of multiphosphorylated compounds (phytate, diphosphorylated sugars, and di- and tri-phosphorylated ribonucleotides) than hydrolysis of monophosphorylated compounds (monophosphorylated sugars and monophosphorylated ribonucleotides). The interaction mechanisms and energies revealed by molecular docking simulations of each Po compound within the enzyme's active site explained the substrate hierarchy observed experimentally. Specifically, the favorable orientation for binding of the negatively charged phosphate moieties with respect to the positive potential surface of the active site was important. Collectively, our findings provide mechanistic insights about the broad but hierarchical role of phytase-type enzymes in Pi recycling from the heterogeneous assembly of Po compounds in agricultural soils or wastes.
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Affiliation(s)
- Mina Solhtalab
- Department of Biological and Environmental Engineering, College of Agriculture and Life Sciences, Cornell University, Ithaca, New York 14853, United States
| | - Annaleise R Klein
- Department of Biological and Environmental Engineering, College of Agriculture and Life Sciences, Cornell University, Ithaca, New York 14853, United States
- Department of Civil and Environmental Engineering, McCormick School of Engineering and Applied Science, Northwestern University, Evanston, Illinois 60208, United States
| | - Ludmilla Aristilde
- Department of Biological and Environmental Engineering, College of Agriculture and Life Sciences, Cornell University, Ithaca, New York 14853, United States
- Department of Civil and Environmental Engineering, McCormick School of Engineering and Applied Science, Northwestern University, Evanston, Illinois 60208, United States
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17
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Nam M, Seo SS, Jung S, Jang SY, Lee J, Kwon M, Khan I, Ryu DH, Kim MK, Hwang GS. Comparable Plasma Lipid Changes in Patients with High-Grade Cervical Intraepithelial Neoplasia and Patients with Cervical Cancer. J Proteome Res 2020; 20:740-750. [PMID: 33241689 DOI: 10.1021/acs.jproteome.0c00640] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cervical cancer is the fourth most prevalent cancer among women worldwide and usually develops from cervical intraepithelial neoplasia (CIN). In the present study, we compared alterations in lipids associated with high-grade CIN and cervical cancer with those associated with a normal status and low-grade CIN by performing global lipid profiling on plasma (66 healthy controls and 55 patients with CIN1, 44 with CIN2/3, and 60 with cervical cancer) using ultraperformance liquid chromatography/quadrupole time-of-flight mass spectrometry. We identified 246 lipids and found 31 lipids with similar alterations in both high-grade CIN and cervical cancer. Among these 31 lipids, four lipid classes (phosphatidylcholine, phosphatidylethanolamine, diglyceride, and free fatty acids) were identified as the major lipid classes with significant differences in the patients with CIN2/3 and cervical cancer compared to the healthy controls and the patients with CIN1. Lipid metabolites belonging to the same classes were positively correlated with each other. High-grade CIN and cervical cancer induce comparable changes in lipid levels, which are closely related to the development of cervical tumors. These results suggest that lipid profiling is a useful method for monitoring progression to cervical cancer.
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Affiliation(s)
- Miso Nam
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea
| | - Sang-Soo Seo
- Center for Uterine Cancer, National Cancer Center, Madu-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea
| | - Sunhee Jung
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea.,Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Seo Young Jang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea.,Department of Chemistry and Nano Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Jueun Lee
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea
| | - Minji Kwon
- Division of Cancer Epidemiology and Prevention, National Cancer Center, Madu-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea
| | - Imran Khan
- Division of Cancer Epidemiology and Prevention, National Cancer Center, Madu-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea.,Department of Food Science and Technology, The University of Haripur, Haripur 22620, Pakistan
| | - Do Hyun Ryu
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Mi Kyung Kim
- Division of Cancer Epidemiology and Prevention, National Cancer Center, Madu-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea
| | - Geum-Sook Hwang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea.,Department of Chemistry and Nano Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
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18
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Cheng L, Yang Q, Chen Z, Zhang J, Chen Q, Wang Y, Wei X. Distinct Changes of Metabolic Profile and Sensory Quality during Qingzhuan Tea Processing Revealed by LC-MS-Based Metabolomics. J Agric Food Chem 2020; 68:4955-4965. [PMID: 32286813 DOI: 10.1021/acs.jafc.0c00581] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Qingzhuan tea (QZT) is a unique type of dark tea exclusively produced in Hubei Province of China. In the current study, liquid chromatography-mass spectrometry (LC-MS) coupled with multivariate analysis was applied to characterize the chemical composition of QZT and investigate the effect of QZT processing on its metabolic profile and sensory quality. The contents of polyphenols and flavonoids decreased significantly while the polysaccharides content remained stable, while the theabrownin content inversely increased during QZT processing. LC-MS-based metabolomics analyses revealed that the tea sample after microbial fermentation (MFT) was dramatically different from the sample before microbial fermentation (UFT), while MFT was very similar to QZT. A total of 102 compounds were identified as critical metabolites responsible for metabolic changes caused by QZT processing, with the contents of catechins and flavonoids significantly decreased, and some novel phenolic acids and catechin derivatives were formed. The sensory quality of QZT was mainly formed during microbial fermentation, which greatly reduced the astringency and bitterness of raw tea leaves and produced its characteristic woody and stale aroma as well as mellow taste. These results suggested that microbial fermentation is the critical process in changing the metabolic profile of raw tea leaves and forming the sensory quality of QZT.
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Affiliation(s)
- Lizeng Cheng
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Qiongqiong Yang
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Ziyan Chen
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Jiarong Zhang
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Qiong Chen
- Yichang Agricultural and Rural Bureau, 37 Yunji Road, Yichang, Hubei 443100, P. R. China
| | - Yuanfeng Wang
- College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
| | - Xinlin Wei
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
- Shanghai Engineering Research Center for Food Safety, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
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19
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Vavrouš A, Ševčík V, Dvořáková M, Čabala R, Moulisová A, Vrbík K. Easy and Inexpensive Method for Multiclass Analysis of 41 Food Contact Related Contaminants in Fatty Food by Liquid Chromatography-Tandem Mass Spectrometry. J Agric Food Chem 2019; 67:10968-10976. [PMID: 31487165 DOI: 10.1021/acs.jafc.9b02544] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Food contact materials (FCMs) may release their chemical components into food and thus raise safety concerns. This paper attempted to study the presence of four major groups of FCM-related endocrine disruptors in fatty food: dialkyl phthalates, bisphenols, printing ink photoinitiators, and polyfluoroalkyl substances. All 41 target compounds were analyzed simultaneously by means of liquid chromatography coupled to tandem mass spectrometry. The sample preparation was significantly streamlined to reduce analysis costs by employing acetonitrile extraction, extract modification by water, and refrigeration at 5 °C. The new method was validated and applied to 60 real samples, including edible oils, butter, and chocolate, where 16 target compounds were measured at levels ≤13000 ng/g. The study also described the blank level increase and sensitivity loss caused by impurities present in the HPLC methanol solvent.
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Affiliation(s)
- Adam Vavrouš
- Centre of Toxicology and Health Safety , National Institute of Public Health , Srobarova 48 , 100 00 Praha 10 , Czech Republic
- Department of Analytical Chemistry, Faculty of Science , Charles University in Prague , Hlavova 8 , 128 43 Praha 2 , Czech Republic
| | - Václav Ševčík
- Centre of Toxicology and Health Safety , National Institute of Public Health , Srobarova 48 , 100 00 Praha 10 , Czech Republic
- Department of Analytical Chemistry, Faculty of Science , Charles University in Prague , Hlavova 8 , 128 43 Praha 2 , Czech Republic
| | - Markéta Dvořáková
- Centre of Toxicology and Health Safety , National Institute of Public Health , Srobarova 48 , 100 00 Praha 10 , Czech Republic
- Third Faculty of Medicine , Charles University in Prague , Ruska 87 , 100 00 Prague 10 , Czech Republic
| | - Radomír Čabala
- Department of Analytical Chemistry, Faculty of Science , Charles University in Prague , Hlavova 8 , 128 43 Praha 2 , Czech Republic
- Institute of Forensic Medicine and Toxicology, First Faculty of Medicine , Charles University in Prague and General University Hospital , 121 08 Prague 2 , Czech Republic
| | - Alena Moulisová
- Centre of Toxicology and Health Safety , National Institute of Public Health , Srobarova 48 , 100 00 Praha 10 , Czech Republic
| | - Karel Vrbík
- Centre of Toxicology and Health Safety , National Institute of Public Health , Srobarova 48 , 100 00 Praha 10 , Czech Republic
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20
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Zhang J, Guo Q, Wei M, Bai J, Huang J, Liu Y, Su Z, Qiu X. Metabolite Identification and Pharmacokinetic Profiling of Isoflavones from Black Soybean in Rats Using Ultrahigh-Performance Liquid Chromatography with Linear-Ion-Trap-Orbitrap and Triple-Quadrupole Tandem Mass Spectrometry. J Agric Food Chem 2018; 66:12941-12952. [PMID: 30444115 DOI: 10.1021/acs.jafc.8b04852] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Black soybeans are rich in isoflavones, which have several beneficial health effects. In this study, a validated method based on UHPLC-MS/MS was developed to screen black-soybean metabolites in rat urine, bile, and plasma and to quantify the compounds (daidzein, genistein, glycitein, and daidzin) and their metabolites (daidzein-4'-β-d-glucuronide, genistein-7-β-d-glucuronide, and genistein-4'-β-d-glucuronide) in plasma. Thirty-seven compounds were tentatively detected in the biological samples. The method was fully validated in quantitative experiments, including in assessments of linearity (2.5-100 ng/mL for daidzein, genistein, and glycitein; 10-100 ng/mL for daidzin; 5-3125 ng/mL for genistein-7-β-d-glucuronide; and 5-1562.5 ng/mL for daidzein-4'-β-d-glucuronide and genistein-4'-β-d-glucuronide), matrix effects (85-115%), recovery (80-105%), precision (<10%), and accuracy (<10%). The compounds were stable throughout sample storage, treatment, and analysis. The method was first applied to detect IFs and metabolites in rats after oral administration of black-soybean extract. These results support the potential of this method for successful application in pharmacokinetic studies.
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Affiliation(s)
- Juping Zhang
- The Second Clinical College of Guangzhou University of Chinese Medicine , Guangzhou 51000 , China
- Mathematical Engineering Academy of Chinese Medicine , Guangzhou University of Chinese Medicine , Guangzhou 51006 , China
| | - Qianxiang Guo
- The Second Clinical College of Guangzhou University of Chinese Medicine , Guangzhou 51000 , China
| | - Meijin Wei
- The Second Clinical College of Guangzhou University of Chinese Medicine , Guangzhou 51000 , China
| | - Junqi Bai
- The Second Clinical College of Guangzhou University of Chinese Medicine , Guangzhou 51000 , China
| | - Juan Huang
- The Second Clinical College of Guangzhou University of Chinese Medicine , Guangzhou 51000 , China
| | - Yuhong Liu
- Mathematical Engineering Academy of Chinese Medicine , Guangzhou University of Chinese Medicine , Guangzhou 51006 , China
| | - Ziren Su
- Mathematical Engineering Academy of Chinese Medicine , Guangzhou University of Chinese Medicine , Guangzhou 51006 , China
| | - Xiaohui Qiu
- The Second Clinical College of Guangzhou University of Chinese Medicine , Guangzhou 51000 , China
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21
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Dal Bosco C, Panero S, Navarra MA, Tomai P, Curini R, Gentili A. Screening and Assessment of Low-Molecular-Weight Biomarkers of Milk from Cow and Water Buffalo: An Alternative Approach for the Rapid Identification of Adulterated Water Buffalo Mozzarellas. J Agric Food Chem 2018; 66:5410-5417. [PMID: 29746108 DOI: 10.1021/acs.jafc.8b01270] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Adulteration of Mozzarella di Bufala Campana with cow milk is a common fraud because of the high price and limited seasonal availability of water buffalo milk. To identify such adulteration, this work proposes a novel approach based on the use of species-specific, low-molecular-weight biomarkers (LMWBs). Liquid chromatography-tandem mass spectrometry screening analyses identified β-carotene, lutein, and β-cryptoxanthin as LMWBs of cow milk, while ergocalciferol was found only in water buffalo milk. Adulterated mozzarellas were prepared in the laboratory and analyzed for the four biomarkers. Combined quantification of β-carotene and ergocalciferol enabled the detection of cow milk with a sensitivity threshold of 5% (w/w). The method was further tested by analyzing a certificated water buffalo mozzarella and several commercial products. This approach is alternative to conventional proteomic and genomic methods and is advantageous for routine operations as a result of its simplicity, speed, and low cost.
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Affiliation(s)
- Chiara Dal Bosco
- Department of Chemistry, Faculty of Mathematical, Physical and Natural Sciences , University of Rome "La Sapienza" , Piazzale Aldo Moro 5 , 00185 Rome , Italy
| | - Stefania Panero
- Department of Chemistry, Faculty of Mathematical, Physical and Natural Sciences , University of Rome "La Sapienza" , Piazzale Aldo Moro 5 , 00185 Rome , Italy
| | - Maria Assunta Navarra
- Department of Chemistry, Faculty of Mathematical, Physical and Natural Sciences , University of Rome "La Sapienza" , Piazzale Aldo Moro 5 , 00185 Rome , Italy
| | - Pierpaolo Tomai
- Department of Chemistry, Faculty of Mathematical, Physical and Natural Sciences , University of Rome "La Sapienza" , Piazzale Aldo Moro 5 , 00185 Rome , Italy
| | - Roberta Curini
- Department of Chemistry, Faculty of Mathematical, Physical and Natural Sciences , University of Rome "La Sapienza" , Piazzale Aldo Moro 5 , 00185 Rome , Italy
| | - Alessandra Gentili
- Department of Chemistry, Faculty of Mathematical, Physical and Natural Sciences , University of Rome "La Sapienza" , Piazzale Aldo Moro 5 , 00185 Rome , Italy
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22
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Wang D, Chen D, Yu J, Liu J, Shi X, Sun Y, Pan Q, Luo X, Yang J, Li Y, Cao H, Li L, Li L. Impact of Oxygen Concentration on Metabolic Profile of Human Placenta-Derived Mesenchymal Stem Cells As Determined by Chemical Isotope Labeling LC-MS. J Proteome Res 2018; 17:1866-1878. [PMID: 29671598 DOI: 10.1021/acs.jproteome.7b00887] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The placenta resides in a physiologically low oxygen microenvironment of the body. Hypoxia induces a wide range of stem cell cellular activities. Here, we report a workflow for exploring the role of physiological (hypoxic, 5% oxygen) and original cell culture (normoxic, 21% oxygen) oxygen concentrations in regulating the metabolic status of human placenta-derived mesenchymal stem cells (hPMSCs). The general biological characteristics of hPMSCs were assessed via a variety of approaches such as cell counts, flow cytometry and differentiation study. A sensitive 13C/12C-dansyl labeling liquid chromatography-mass spectrometry (LC-MS) method targeting the amine/phenol submetabolome was used for metabolic profiling of the cell and corresponding culture supernatant. Multivariate and univariate statistical analyses were used to analyze the metabolomics data. hPMSCs cultured in hypoxia display smaller size, higher proliferation, greater differentiation ability and no difference in immunophenotype. Overall, 2987 and 2860 peak pairs or metabolites were detected and quantified in hPMSCs and culture supernatant, respectively. Approximately 86.0% of cellular metabolites and 84.3% of culture supernatant peak pairs were identified using a dansyl standard library or matched to metabolite structures using accurate mass search against human metabolome libraries. The orthogonal partial least-squares discriminant analysis (OPLS-DA) showed a clear separation between the hypoxic group and the normoxic group. Ten metabolites from cells and six metabolites from culture supernatant were identified as potential biomarkers of hypoxia. This study demonstrated that chemical isotope labeling LC-MS can be used to reveal the role of oxygen in the regulation of hPMSC metabolism, whereby physiological oxygen concentrations may promote arginine and proline metabolism, pantothenate and coenzyme A (CoA) biosynthesis, and alanine, aspartate and glutamate metabolism.
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Affiliation(s)
- Dan Wang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine , Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , 79 Qingchun Road , Hangzhou City 310003 , China
| | - Deying Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine , Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , 79 Qingchun Road , Hangzhou City 310003 , China
| | - Jiong Yu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine , Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , 79 Qingchun Road , Hangzhou City 310003 , China
| | - Jingqi Liu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine , Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , 79 Qingchun Road , Hangzhou City 310003 , China
| | - Xiaowei Shi
- Chu Kochen Honors College , Zhejiang University , 866 Yuhangtang Road , Hangzhou 310058 , China
| | - Yanni Sun
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine , Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , 79 Qingchun Road , Hangzhou City 310003 , China
| | - Qiaoling Pan
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine , Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , 79 Qingchun Road , Hangzhou City 310003 , China
| | - Xian Luo
- Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada
| | - Jinfeng Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine , Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , 79 Qingchun Road , Hangzhou City 310003 , China
| | - Yang Li
- Obstetrical Department, The First Affiliated Hospital, College of Medicine , Zhejiang University , 79 Qingchun Road , Hangzhou City 310003 , China
| | - Hongcui Cao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine , Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , 79 Qingchun Road , Hangzhou City 310003 , China
| | - Liang Li
- Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine , Zhejiang University, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases , 79 Qingchun Road , Hangzhou City 310003 , China
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23
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Lakbub JC, Su X, Zhu Z, Patabandige MW, Hua D, Go EP, Desaire H. Two New Tools for Glycopeptide Analysis Researchers: A Glycopeptide Decoy Generator and a Large Data Set of Assigned CID Spectra of Glycopeptides. J Proteome Res 2017; 16:3002-3008. [PMID: 28691494 DOI: 10.1021/acs.jproteome.7b00289] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The glycopeptide analysis field is tightly constrained by a lack of effective tools that translate mass spectrometry data into meaningful chemical information, and perhaps the most challenging aspect of building effective glycopeptide analysis software is designing an accurate scoring algorithm for MS/MS data. We provide the glycoproteomics community with two tools to address this challenge. The first tool, a curated set of 100 expert-assigned CID spectra of glycopeptides, contains a diverse set of spectra from a variety of glycan types; the second tool, Glycopeptide Decoy Generator, is a new software application that generates glycopeptide decoys de novo. We developed these tools so that emerging methods of assigning glycopeptides' CID spectra could be rigorously tested. Software developers or those interested in developing skills in expert (manual) analysis can use these tools to facilitate their work. We demonstrate the tools' utility in assessing the quality of one particular glycopeptide software package, GlycoPep Grader, which assigns glycopeptides to CID spectra. We first acquired the set of 100 expert assigned CID spectra; then, we used the Decoy Generator (described herein) to generate 20 decoys per target glycopeptide. The assigned spectra and decoys were used to test the accuracy of GlycoPep Grader's scoring algorithm; new strengths and weaknesses were identified in the algorithm using this approach. Both newly developed tools are freely available. The software can be downloaded at http://glycopro.chem.ku.edu/GPJ.jar.
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Affiliation(s)
- Jude C Lakbub
- Ralph N. Adams Institute for Bioanalytical Chemistry, Department of Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
| | - Xiaomeng Su
- Ralph N. Adams Institute for Bioanalytical Chemistry, Department of Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
| | - Zhikai Zhu
- Ralph N. Adams Institute for Bioanalytical Chemistry, Department of Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
| | - Milani W Patabandige
- Ralph N. Adams Institute for Bioanalytical Chemistry, Department of Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
| | - David Hua
- Ralph N. Adams Institute for Bioanalytical Chemistry, Department of Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
| | - Eden P Go
- Ralph N. Adams Institute for Bioanalytical Chemistry, Department of Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
| | - Heather Desaire
- Ralph N. Adams Institute for Bioanalytical Chemistry, Department of Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
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24
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Favre L, Ortalo-Magné A, Greff S, Pérez T, Thomas OP, Martin JC, Culioli G. Discrimination of Four Marine Biofilm-Forming Bacteria by LC-MS Metabolomics and Influence of Culture Parameters. J Proteome Res 2017; 16:1962-1975. [PMID: 28362105 DOI: 10.1021/acs.jproteome.6b01027] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Most marine bacteria can form biofilms, and they are the main components of biofilms observed on marine surfaces. Biofilms constitute a widespread life strategy, as growing in such structures offers many important biological benefits. The molecular compounds expressed in biofilms and, more generally, the metabolomes of marine bacteria remain poorly studied. In this context, a nontargeted LC-MS metabolomics approach of marine biofilm-forming bacterial strains was developed. Four marine bacteria, Persicivirga (Nonlabens) mediterranea TC4 and TC7, Pseudoalteromonas lipolytica TC8, and Shewanella sp. TC11, were used as model organisms. The main objective was to search for some strain-specific bacterial metabolites and to determine how culture parameters (culture medium, growth phase, and mode of culture) may affect the cellular metabolism of each strain and thus the global interstrain metabolic discrimination. LC-MS profiling and statistical partial least-squares discriminant analyses showed that the four strains could be differentiated at the species level whatever the medium, the growth phase, or the mode of culture (planktonic vs biofilm). A MS/MS molecular network was subsequently built and allowed the identification of putative bacterial biomarkers. TC8 was discriminated by a series of ornithine lipids, while the P. mediterranea strains produced hydroxylated ornithine and glycine lipids. Among the P. mediterranea strains, TC7 extracts were distinguished by the occurrence of diamine derivatives, such as putrescine amides.
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Affiliation(s)
- Laurie Favre
- Université de Toulon , MAPIEM, EA 4323, La Garde Cedex 83130, France
| | | | - Stéphane Greff
- CNRS, Aix Marseille Univ , IRD, Avignon Univ. Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale, Station marine d'Endoume, Marseille 13007, France
| | - Thierry Pérez
- CNRS, Aix Marseille Univ , IRD, Avignon Univ. Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale, Station marine d'Endoume, Marseille 13007, France
| | - Olivier P Thomas
- CNRS, Aix Marseille Univ , IRD, Avignon Univ. Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale, Station marine d'Endoume, Marseille 13007, France.,National University of Ireland Galway , School of Chemistry, Marine Biodiscovery, Galway, Ireland
| | | | - Gérald Culioli
- Université de Toulon , MAPIEM, EA 4323, La Garde Cedex 83130, France
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25
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Liu Z, Auldist M, Wright M, Cocks B, Rochfort S. Bovine Milk Oligosaccharide Contents Show Remarkable Seasonal Variation and Intercow Variation. J Agric Food Chem 2017; 65:1307-1313. [PMID: 28139923 DOI: 10.1021/acs.jafc.6b04098] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Human milk oligosaccharides (OS) play an important role in protecting the neonate. In addition to fructo-oligosaccharides and galacto-oligosaccharides, bovine milk OS have great potential to be used in pediatric food products to mimic the functions of human milk OS. Currently, little is known about the accumulation of OS in bovine milk in relation to genetic and environmental factors. A systematic survey on seasonal variation of 14 major OS was thus conducted with 19 cows over the entire milking season using a liquid chromatography-mass spectrometry technique. This study revealed a number of significant correlations between structurally related and structurally nonrelated OS and a substantial individual animal difference for all 14 OS. Most of the 14 OS displayed a remarkable seasonal variation in abundance (up to 10-fold change), with the highest abundance observed in April and May (i.e., autumn) for the majority of the 19 cows.
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Affiliation(s)
- Zhiqian Liu
- Biosciences Research, Agriculture Victoria, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
| | - Martin Auldist
- Farming Systems Research, Agriculture Victoria , Ellinbank Centre, 1301 Hazeldean Road, Ellinbank, Victoria 3821, Australia
| | - Marlie Wright
- Farming Systems Research, Agriculture Victoria , Ellinbank Centre, 1301 Hazeldean Road, Ellinbank, Victoria 3821, Australia
| | - Benjamin Cocks
- Biosciences Research, Agriculture Victoria, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
- School of Applied Systems Biology, La Trobe University , Bundoora, Victoria 3083, Australia
| | - Simone Rochfort
- Biosciences Research, Agriculture Victoria, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
- School of Applied Systems Biology, La Trobe University , Bundoora, Victoria 3083, Australia
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26
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Gonzales GB, Smagghe G, Wittevrongel J, Huynh NT, Van Camp J, Raes K. Metabolism of Quercetin and Naringenin by Food-Grade Fungal Inoculum, Rhizopus azygosporus Yuan et Jong (ATCC 48108). J Agric Food Chem 2016; 64:9263-9267. [PMID: 27960283 DOI: 10.1021/acs.jafc.6b04124] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Rhizopus azygosporus Yuan et Jong (ATCC 48108), a starter culture for fermented soybean tempeh, produces β-glucosidases that cleave flavonoid glycosides into aglycones during fermentation. However, recent data suggest that fermentation of a flavonoid glycoside-rich extract with this strain did not result in the production of aglycones. Thus, in this paper, flavonoid metabolism of this strain was investigated. Incubation of flavonoid aglycones, naringenin and quercetin, with R. azygosporus resulted in the production of flavonoid glucosyl-, hydroxyl-, and sulfo-conjugated derivatives. Naringenin was completely metabolized within 96 h into eriodictyol sulfate and eriodictyol glucoside, whereas quercetin was partially metabolized into quercetin glucoside, diglucoside, sulfate, and glucosyl-sulfate. Most of these metabolites were found to be excreted by the fungi into the culture medium. Toxicity analysis revealed that incubation with both quercetin and naringenin did not exert inhibitory effects on fungal growth. This study presents an interesting mechanism of fungal detoxification of flavonoids in foods.
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Affiliation(s)
- Gerard Bryan Gonzales
- Food Chemistry and Human Nutrition (NutriFOODChem), Department of Food Safety and Food Quality, ‡Laboratory of Agrozoology, Department of Crop Protection, and #Laboratory of Food Microbiology and Biotechnology, Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University , Ghent, Belgium
| | - Guy Smagghe
- Food Chemistry and Human Nutrition (NutriFOODChem), Department of Food Safety and Food Quality, ‡Laboratory of Agrozoology, Department of Crop Protection, and #Laboratory of Food Microbiology and Biotechnology, Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University , Ghent, Belgium
| | - Jens Wittevrongel
- Food Chemistry and Human Nutrition (NutriFOODChem), Department of Food Safety and Food Quality, ‡Laboratory of Agrozoology, Department of Crop Protection, and #Laboratory of Food Microbiology and Biotechnology, Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University , Ghent, Belgium
| | - Nguyen Thai Huynh
- Food Chemistry and Human Nutrition (NutriFOODChem), Department of Food Safety and Food Quality, ‡Laboratory of Agrozoology, Department of Crop Protection, and #Laboratory of Food Microbiology and Biotechnology, Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University , Ghent, Belgium
| | - John Van Camp
- Food Chemistry and Human Nutrition (NutriFOODChem), Department of Food Safety and Food Quality, ‡Laboratory of Agrozoology, Department of Crop Protection, and #Laboratory of Food Microbiology and Biotechnology, Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University , Ghent, Belgium
| | - Katleen Raes
- Food Chemistry and Human Nutrition (NutriFOODChem), Department of Food Safety and Food Quality, ‡Laboratory of Agrozoology, Department of Crop Protection, and #Laboratory of Food Microbiology and Biotechnology, Department of Industrial Biological Sciences, Faculty of Bioscience Engineering, Ghent University , Ghent, Belgium
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27
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Liu Z, Cocks BG, Rochfort S. Comparison of Molecular Species Distribution of DHA-Containing Triacylglycerols in Milk and Different Infant Formulas by Liquid Chromatography-Mass Spectrometry. J Agric Food Chem 2016; 64:2134-2144. [PMID: 26902881 DOI: 10.1021/acs.jafc.5b05920] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Long-chain polyunsaturated fatty acids (LC-PUFA) are an important nutritional lipid and have potential in being able to promote human health. Docosahexaenoic acid (DHA, C22:6ω3) is often added in infant formulas to meet the nutritional requirement of formula-fed infants. A comprehensive survey on DHA-containing triacylglycerol (DHA-TAG) molecular species has been conducted for seven infant formulas (IFs) sourced from Australia, Europe, and the USA as well as bovine milk and human milk. Using LC-triple quadrupole MS and LC-LTQ-orbitrap MS we were able to identify and quantify 56 DHA-TAG species in these samples; the fatty acid structure of these species was assigned using their MS(2) spectra. The species composition of DHA-TAG was found to be different between bovine milk, human milk, and IFs and also between different brands of IFs. Bovine milk and human milk contain DHA-TAG of smaller molecular size (728-952 Da), whereas five out of the seven IF samples contain species of broader mass range (from 728 to 1035 Da). Our study indicates that two types of DHA were used in the seven IF products surveyed and that there is very large difference in molecular species distribution in different IF products that may influence the fine nutritional profile and biological functions of IF products.
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Affiliation(s)
- Zhiqian Liu
- Department of Economic Development, Jobs, Transport and Resources, Biosciences Research, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
| | - Benjamin G Cocks
- Department of Economic Development, Jobs, Transport and Resources, Biosciences Research, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
- School of Applied Systems Biology, La Trobe University , Bundoora, Victoria 3083, Australia
| | - Simone Rochfort
- Department of Economic Development, Jobs, Transport and Resources, Biosciences Research, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
- School of Applied Systems Biology, La Trobe University , Bundoora, Victoria 3083, Australia
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28
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Ehling S, Reddy TM. Analysis of Glyphosate and Aminomethylphosphonic Acid in Nutritional Ingredients and Milk by Derivatization with Fluorenylmethyloxycarbonyl Chloride and Liquid Chromatography-Mass Spectrometry. J Agric Food Chem 2015; 63:10562-8. [PMID: 26568409 DOI: 10.1021/acs.jafc.5b04453] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A straightforward analytical method based on derivatization with fluorenylmethyloxycarbonyl chloride and liquid chromatography-mass spectrometry has been developed for the analysis of residues of glyphosate and aminomethylphosphonic acid (AMPA) in a suite of nutritional ingredients derived from soybean, corn, and sugar beet and also in cow's milk and human breast milk. Accuracy and intermediate precision were 91-116% and <10% RSD, respectively, in soy protein isolate. Limits of quantitation were 0.05 and 0.005 μg/g in powdered and liquid samples, respectively. Glyphosate and AMPA were quantified at 0.105 and 0.210 μg/g (soy protein isolate) and 0.850 and 2.71 μg/g (soy protein concentrate, both derived from genetically modified soybean), respectively. Residues were not detected in soy milk, soybean oil, corn oil, maltodextrin, sucrose, cow's milk, whole milk powder, or human breast milk. The method is proposed as a convenient tool for the survey of glyphosate and AMPA in the ingredient supply chain.
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Affiliation(s)
- Stefan Ehling
- Abbott Laboratories, 3300 Stelzer Road, Columbus, Ohio 43219, United States
| | - Todime M Reddy
- Abbott Laboratories, 3300 Stelzer Road, Columbus, Ohio 43219, United States
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29
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Capriotti AL, Cavaliere C, Piovesana S, Stampachiacchiere S, Samperi R, Ventura S, Laganà A. Simultaneous Determination of Naturally Occurring Estrogens and Mycoestrogens in Milk by Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry Analysis. J Agric Food Chem 2015; 63:8940-8946. [PMID: 26416337 DOI: 10.1021/acs.jafc.5b02815] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A simple, fast, and reproducible method for the simultaneous determination of natural estrogens and mycoestrogens (resorcylic acid lactones) in milk by ultrahigh-performance liquid chromatography combined with electrospray ionization triple quadrupole tandem mass spectrometry (UHPLC/ESI-MS/MS) is described. The extraction was carried out by solid-phase extraction (SPE) using graphitized carbon black as solid sorbent. The use of carbon black allowed us to avoid any type of sample pretreatment, and the extraction was performed simply by diluting milk samples in water. Correlation coefficient values were obtained in the range between 0.9991 and 1, with good recoveries (67-107% at the lowest spiked level), repeatability (4.8-16.8%), and reproducibility (3.2-16.3%). Moreover, a very low matrix effect was observed for both estrogens and mycoestrogens. With respect to a previous method based on SPE with Oasis MAX cartridges, the one here described allowed us to detect all the analytes under investigation, at the lowest tested concentration level, including free estrogens (in particular estriol). Finally, the developed UHPLC/ESI-MS/MS method was applied to the analysis of some whole milk samples from different lactating animals (cow, goat, and donkey) as well as ultrahigh-temperature-treated cow milk and powder milk samples.
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Affiliation(s)
- Anna Laura Capriotti
- Dipartimento di Chimica, Università di Roma "La Sapienza" , Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Chiara Cavaliere
- Dipartimento di Chimica, Università di Roma "La Sapienza" , Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Susy Piovesana
- Dipartimento di Chimica, Università di Roma "La Sapienza" , Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Serena Stampachiacchiere
- Dipartimento di Chimica, Università di Roma "La Sapienza" , Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Roberto Samperi
- Dipartimento di Chimica, Università di Roma "La Sapienza" , Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Salvatore Ventura
- Dipartimento di Chimica, Università di Roma "La Sapienza" , Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Aldo Laganà
- Dipartimento di Chimica, Università di Roma "La Sapienza" , Piazzale Aldo Moro 5, 00185 Rome, Italy
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30
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Ehling S, Reddy TM. Direct Analysis of Leucine and Its Metabolites β-Hydroxy-β-methylbutyric Acid, α-Ketoisocaproic Acid, and α-Hydroxyisocaproic Acid in Human Breast Milk by Liquid Chromatography-Mass Spectrometry. J Agric Food Chem 2015; 63:7567-7573. [PMID: 26271627 DOI: 10.1021/acs.jafc.5b02563] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A direct, quantitative, and confirmatory method based on stable isotope dilution liquid chromatography-mass spectrometry was developed and validated for the analysis of leucine and metabolites β-hydroxy-β-methylbutyric acid (HMB), α-ketoisocaproic acid (KIC), and α-hydroxyisocaproic acid (HICA) in human breast milk. Chromatographic resolution was achieved between isobaric leucine and isoleucine. Accuracy and intermediate precision were 89-117% and <10% relative standard deviation (RSD) across three validation runs. Limits of quantitation for HMB, KIC, HICA, and leucine in human breast milk were 20 μg/L, 20 μg/L, 10 μg/L, and 1 mg/L. Measured concentrations of HMB, KIC, HICA, and free leucine in human breast milk from six donors at various stages of lactation were 42-164 μg/L, < 20-1057 μg/L, < 10 μg/L, and 2.1-88.5 mg/L. HMB and KIC were confirmed in human breast milk by orthogonal hydrophilic interaction chromatography (HILIC). This work provides a tool for further study of human breast milk composition and its effect on protein turnover in developing infants.
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Affiliation(s)
- Stefan Ehling
- Abbott Laboratories , 3300 Stelzer Road, Columbus, Ohio 43219, United States
| | - Todime M Reddy
- Abbott Laboratories , 3300 Stelzer Road, Columbus, Ohio 43219, United States
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31
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Bajoub A, Hurtado-Fernández E, Ajal EA, Ouazzani N, Fernández-Gutiérrez A, Carrasco-Pancorbo A. Comprehensive 3-year study of the phenolic profile of Moroccan monovarietal virgin olive oils from the Meknès region. J Agric Food Chem 2015; 63:4376-85. [PMID: 25846897 DOI: 10.1021/jf506097u] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The phenolic fraction of monovarietal virgin olive oils (VOOs) from the main Moroccan cultivar Picholine marocaine (142 samples from three different subareas of the Meknès region) was studied over three consecutive crop seasons (2011, 2012, and 2013) using a powerful LC-MS methodology. First, LC-ESI-TOF MS was used to get a comprehensive characterization of the phenolic fraction; afterward, LC-ESI-IT MS was utilized for further identification (MS/MS experiments) and quantitation purposes. A total of 28 phenolic compounds (and quinic acid) were determined, revealing the complex profile of Meknès VOO, composed, in order of abundance, by secoiridoids, phenolic alcohols, lignans, flavonoids, and phenolic acids. Tukey's test was applied to ascertain possible significant intraregional and/or interannual variations of the phenolic content of the Meknès VOOs under study. Results showed that the content of phenolic compounds was mainly related to the crop season.
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Affiliation(s)
- Aadil Bajoub
- †Department of Analytical Chemistry, Faculty of Science, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain
| | - Elena Hurtado-Fernández
- †Department of Analytical Chemistry, Faculty of Science, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain
| | - El Amine Ajal
- §Provincial Department of Agriculture of Azilal, P.O. Box 13, 22000 Azilal, Morocco
| | - Noureddine Ouazzani
- #Agro-pôle Olivier, National School of Agriculture in Meknes, B.P. S/40, Meknès, Morocco
| | - Alberto Fernández-Gutiérrez
- †Department of Analytical Chemistry, Faculty of Science, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain
| | - Alegría Carrasco-Pancorbo
- †Department of Analytical Chemistry, Faculty of Science, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain
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32
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Tipping WJ, Tshuma N, Adams J, Haywood HT, Rowedder JE, Fray MJ, McInally T, Macdonald SJF, Oldham NJ. Relative binding affinities of integrin antagonists by equilibrium dialysis and liquid chromatography-mass spectrometry. ACS Med Chem Lett 2015; 6:221-4. [PMID: 25699153 DOI: 10.1021/ml500395v] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 12/21/2014] [Indexed: 01/25/2023] Open
Abstract
The integrin αvβ6 is a potential target for treatment of idiopathic pulmonary fibrosis (IPF). Equilibrium dialysis (ED) was investigated for its ability to report ligand binding in an αvβ6 inhibitor screening assay. As a preliminary experiment, an established peptidomimetic inhibitor of the integrin was dialyzed against αvβ6, and the fraction bound (f b) and percentage saturation determined by liquid chromatography-mass spectrometry (LC-MS) analysis. Quantitation of the inhibitor in the two chambers of the ED cartridge revealed an uneven distribution in the presence of αvβ6, corresponding to near saturation binding to the protein (93 ± 3%), while the control (without integrin) showed an equal partitioning of the inhibitor on either side of the dialysis membrane. A competitive ED assay with a 12 component mixture of antagonists was conducted, and the results compared with an established cell adhesion assay for quantifying αvβ6 inhibition of individual antagonists. Compounds clustered into three groupings: those with pIC 50 values between ca. 5.0 and 5.5, which possessed ED f b values indistinguishable from the controls, those with pIC 50s of 6.5 ± 0.2, which exhibited detectable integrin binding (f b 13-25%) in the ED assay, and a single compound of pIC 50 7.2 possessing an f b value of 38%. A good correlation between ED-derived f b and pIC 50 was observed despite the two assays utilizing quite different outputs. These results demonstrate that ED with LC-MS detection shows promise as a rapid αvβ6 integrin antagonist screening assay for mixtures of putative ligands.
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Affiliation(s)
- William J. Tipping
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Nkazimulo Tshuma
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - James Adams
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Harvey T. Haywood
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - James E. Rowedder
- Fibrosis
Discovery Performance Unit, GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - M. Jonathan Fray
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Thomas McInally
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Simon J. F. Macdonald
- Fibrosis
Discovery Performance Unit, GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, U.K
| | - Neil J. Oldham
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
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33
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Liu Z, Moate P, Cocks B, Rochfort S. Simple liquid chromatography-mass spectrometry method for quantification of major free oligosaccharides in bovine milk. J Agric Food Chem 2014; 62:11568-11574. [PMID: 25365143 DOI: 10.1021/jf5037849] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Free oligosaccharides (OS) are a significant functional component of milk that are difficult to quantitate. A simple method for quantitative analysis of the major free OS in bovine milk is described. Following a defatting step, protein elimination was performed by ultrafiltration. OS were separated by hydrophilic interaction liquid chromatography (HILIC) and detected by an Orbitrap mass analyzer in negative mode. The method is sensitive [with a limit of detection (LOD) for all representative OS of <0.1 ng] and reproducible, enabling simultaneous quantification of 13 major OS within a single run. Application of this method to the quantification of major OS in 32 milk samples collected after three different feeding treatments allowed us to reveal the relative abundance of different OS species, the variation of the OS content between individual cows, and the correlations between some of the major OS.
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Affiliation(s)
- Zhiqian Liu
- Biosciences Research Division, Department of Environment and Primary Industries, AgriBio , 5 Ring Road, Bundoora, Victoria 3083, Australia
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34
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Capriotti AL, Caruso G, Cavaliere C, Samperi R, Stampachiacchiere S, Zenezini Chiozzi R, Laganà A. Protein profile of mature soybean seeds and prepared soybean milk. J Agric Food Chem 2014; 62:9893-9. [PMID: 25229310 DOI: 10.1021/jf5034152] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The soybean (Glycine max (L.) Merrill) is economically the most important bean in the world, providing a wide range of vegetable proteins. Soybean milk is a colloidal solution obtained as water extract from swelled and ground soybean seeds. Soybean proteins represent about 35-40% on a dry weight basis and they are receiving increasing attention with respect to their health effects. However, the soybean is a well-recognized allergenic food, and therefore, it is urgent to define its protein components responsible for the allergenicity in order to develop hypoallergenic soybean products for sensitive people. The main aim of this work was the characterization of seed and milk soybean proteome and their comparison in terms of protein content and specific proteins. Using a shotgun proteomics approach, 243 nonredundant proteins were identified in mature soybean seeds.
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Affiliation(s)
- Anna Laura Capriotti
- Dipartimento di Chimica, Università di Roma "La Sapienza" , Piazzale Aldo Moro 5, 00185 Rome, Italy
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