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Smeltz MG, Clifton MS, Henderson WM, McMillan L, Wetmore BA. Targeted Per- and Polyfluoroalkyl substances (PFAS) assessments for high throughput screening: Analytical and testing considerations to inform a PFAS stock quality evaluation framework. Toxicol Appl Pharmacol 2023; 459:116355. [PMID: 36535553 PMCID: PMC10367912 DOI: 10.1016/j.taap.2022.116355] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/25/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Per- and polyfluoroalkyl substances (PFAS) represent a large chemical class lacking hazard, toxicokinetic, and exposure information. To accelerate PFAS hazard evaluation, new approach methodologies (NAMs) comprised of in vitro high-throughput toxicity screening, toxicokinetic data, and computational modeling are being employed in read across strategies to evaluate the larger PFAS landscape. A critical consideration to ensure robust evaluations is a parallel assessment of the quality of the screening stock solutions, where dimethyl sulfoxide (DMSO) is often the diluent of choice. Challenged by the lack of commercially available reference standards for many of the selected PFAS and reliance on mass spectrometry approaches for such an evaluation, we developed a high-throughput framework to evaluate the quality of screening stocks for 205 PFAS selected for these NAM efforts. Using mass spectrometry coupled with either liquid or gas chromatography, a quality scoring system was developed that incorporated observations during mass spectral examination to provide a simple pass or fail notation. Informational flags were used to further describe findings regarding parent analyte presence through accurate mass identification, evidence of contaminants and/or degradation, or further describe characteristics such as isomer presence. Across the PFAS-DMSO stocks tested, 148 unique PFAS received passing quality scores to allow for further in vitro testing whereas 57 received a failing score primarily due to detection issues or confounding effects of DMSO. Principle component analysis indicated vapor pressure and Henry's Law Constant as top indicators for a failed quality score for those analyzed by gas chromatography. Three PFAS in the hexafluoropropylene oxide family failed due to degradation in DMSO. As the PFAS evaluated spanned over 20 different structural categories, additional commentary describes analytical observations across specific groups related to PFAS stock composition, detection, stability, and methodologic considerations that will be useful for informing future analytical assessment and downstream HTS efforts. The high-throughput stock quality scoring workflow presented holds value as a tool to evaluate chemical presence and quality efficiently and for informing data inclusion in PFAS or other NAM screening efforts.
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Affiliation(s)
- Marci G Smeltz
- Center for Computational Toxicology and Exposure, Office of Research and Development, United States Environmental Protection Agency, Research Triangle Park, NC 27711, United States of America
| | - M Scott Clifton
- Center for Environmental Measurement and Modeling, Office of Research and Development, United States Environmental Protection Agency, Research Triangle Park, NC 27711, United States of America
| | - W Matthew Henderson
- Center for Environmental Measurement and Modeling, Office of Research and Development, United States Environmental Protection Agency, Athens, GA 23605, United States of America
| | - Larry McMillan
- National Caucus and Center on Black Aged, Inc, Durham, NC, United States of America
| | - Barbara A Wetmore
- Center for Computational Toxicology and Exposure, Office of Research and Development, United States Environmental Protection Agency, Research Triangle Park, NC 27711, United States of America.
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2
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Lin F, Lin X, Wang X, Mei G, Chen B, Yao H, Huang L. Inhibitory effect of Selaginella doederleinii hieron on human cytochrome P450. Front Pharmacol 2023; 14:1108867. [PMID: 36874034 PMCID: PMC9975586 DOI: 10.3389/fphar.2023.1108867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 01/30/2023] [Indexed: 02/17/2023] Open
Abstract
Introduction: Selaginella doederleinii Hieron is a traditional Chinese herbal medicine, the ethyl acetate extract from Selaginella doederleinii (SDEA) showed favorable anticancer potentials. However, the effect of SDEA on human cytochrome P450 enzymes (CYP450) remains unclear. To predict the herb-drug interaction (HDI) and lay the groundwork for further clinical trials, the inhibitory effect of SDEA and its four constituents (Amentoflavone, Palmatine, Apigenin, Delicaflavone) on seven CYP450 isoforms were investigated by using the established CYP450 cocktail assay based on LC-MS/MS. Methods: Appropriate substrates for seven tested CYP450 isoforms were selected to establish a reliable cocktail CYP450 assay based on LC-MS/MS. The contents of four constituents (Amentoflavone, Palmatine, Apigenin, Delicaflavone) in SDEA were determined as well. Then, the validated CYP450 cocktail assay was applied to test the inhibitory potential of SDEA and four constituents on CYP450 isoforms. Results: SDEA showed strong inhibitory effect on CYP2C9 and CYP2C8 (IC50 ≈ 1 μg/ml), moderate inhibitory effect against CYP2C19, CYP2E1 and CYP3A (IC50 < 10 μg/ml). Among the four constituents, Amentoflavone had the highest content in the extract (13.65%) and strongest inhibitory effect (IC50 < 5 μM), especially for CYP2C9, CYP2C8 and CYP3A. Amentoflavone also showed time-dependent inhibition on CYP2C19 and CYP2D6. Apigenin and Palmatine both showed concentration-dependent inhibition. Apigenin inhibited CYP1A2, CYP2C8, CYP2C9, CYP2E1 and CYP3A. Palmatine inhibited CYP3A and had a weak inhibitory effect on CYP2E1. As for Delicaflavone, which has the potential to develop as an anti-cancer agent, showed no obvious inhibitory effect on CYP450 enzymes. Conclusion: Amentoflavone may be one of the main reasons for the inhibition of SDEA on CYP450 enzymes, the potential HDI should be considered when SDEA or Amentoflavone were used with other clinical drugs. On the contrast, Delicaflavone is more suitable to develop as a drug for clinical use, considering the low level of CYP450 metabolic inhibition.
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Affiliation(s)
- Fei Lin
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Xinhua Lin
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Xuewen Wang
- Department of Preventive Medicine, School of Public Health, Fujian Medical University, Fuzhou, China
| | - Guanghui Mei
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Bing Chen
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Hong Yao
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Lingyi Huang
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, China
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3
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Label-free chemical imaging of cytochrome P450 activity by Raman microscopy. Commun Biol 2022; 5:778. [PMID: 35995965 PMCID: PMC9395422 DOI: 10.1038/s42003-022-03713-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 07/13/2022] [Indexed: 12/27/2022] Open
Abstract
Although investigating drug modulation of cytochrome P450 (CYP) activity under physiological conditions is crucial in drug development to avoid severe adverse drug reactions, the current evaluation approaches that rely on the destructive and end-point analysis can be misleading due to invasive treatments and cellular heterogeneity. Here, we propose a non-destructive and high-content method for visualizing and quantifying intracellular CYP activity under drug administration by Raman microscopy. The redox-state and spin-state sensitive Raman measurement indicated that the induced CYPs in living hepatocytes were in oxidized and low-spin state, which is related to monooxygenase function of CYP. Moreover, glycogen depletion associated with CYP induction was simultaneously observed, indicating a relevant effect on glucose metabolism. By deciphering the overall changes in the biochemical fingerprints of hepatocytes, Raman microscopy offers a non-destructive and quantitative chemical imaging method to evaluate CYP activity at the single-cell level with the potential to facilitate future drug development schemes.
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4
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Feng L, Tian X, Yao D, Yu Z, Huo X, Tian Z, Ning J, Cui J, James TD, Ma X. A practical strategy to develop isoform-selective near-infrared fluorescent probes for human cytochrome P450 enzymes. Acta Pharm Sin B 2022; 12:1976-1986. [PMID: 35847500 PMCID: PMC9279627 DOI: 10.1016/j.apsb.2021.11.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/20/2021] [Accepted: 11/16/2021] [Indexed: 01/08/2023] Open
Affiliation(s)
- Lei Feng
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China
- College of Pharmacy, the National & Local Joint Engineering Research Center for Drug Development of Neurodegenerative Disease, Dalian Medical University, Dalian 116044, China
| | - Xiangge Tian
- College of Pharmacy, the National & Local Joint Engineering Research Center for Drug Development of Neurodegenerative Disease, Dalian Medical University, Dalian 116044, China
| | - Dahong Yao
- School of Pharmaceutical Sciences, Shenzhen Technology University, Shenzhen 518060, China
| | - Zhenlong Yu
- College of Pharmacy, the National & Local Joint Engineering Research Center for Drug Development of Neurodegenerative Disease, Dalian Medical University, Dalian 116044, China
| | - Xiaokui Huo
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China
- College of Pharmacy, the National & Local Joint Engineering Research Center for Drug Development of Neurodegenerative Disease, Dalian Medical University, Dalian 116044, China
| | - Zhenhao Tian
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Jing Ning
- College of Pharmacy, the National & Local Joint Engineering Research Center for Drug Development of Neurodegenerative Disease, Dalian Medical University, Dalian 116044, China
- Corresponding authors. Tel.: +86 411 86110419.
| | - Jingnan Cui
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Tony D. James
- Department of Chemistry, University of Bath, Bath BA2 7AY, UK
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Xiaochi Ma
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China
- College of Pharmacy, the National & Local Joint Engineering Research Center for Drug Development of Neurodegenerative Disease, Dalian Medical University, Dalian 116044, China
- Corresponding authors. Tel.: +86 411 86110419.
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5
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Chai L, Zhang H, Song R, Yang H, Yu H, Paneth P, Kepp KP, Akamatsu M, Ji L. Precision Biotransformation of Emerging Pollutants by Human Cytochrome P450 Using Computational-Experimental Synergy: A Case Study of Tris(1,3-dichloro-2-propyl) Phosphate. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:14037-14050. [PMID: 34663070 DOI: 10.1021/acs.est.1c03036] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Precision biotransformation is an envisioned strategy offering detailed insights into biotransformation pathways in real environmental settings using experimentally guided high-accuracy quantum chemistry. Emerging pollutants, whose metabolites are easily overlooked but may cause idiosyncratic toxicity, are important targets of such a strategy. We demonstrate here that complex metabolic reactions of tris(1,3-dichloro-2-propyl) phosphate (TDCIPP) catalyzed by human CYP450 enzymes can be mapped via a three-step synergy strategy: (i) screening the possible metabolites via high-throughout (moderate-accuracy) computations; (ii) analyzing the proposed metabolites in vitro by human liver microsomes and recombinant human CYP450 enzymes; and (iii) rationalizing the experimental data via precise mechanisms using high-level targeted computations. Through the bilateral dialogues from qualitative to semi-quantitative to quantitative levels, we show how TDCIPP metabolism especially by CYP3A4 generates bis(1,3-dichloro-2-propyl) phosphate (BDCIPP) as an O-dealkylation metabolite and bis(1,3-dichloro-2-propyl) 3-chloro-1-hydroxy-2-propyl phosphate (alcoholβ-dehalogen) as a dehalogenation/reduction metabolite via the initial rate-determining H-abstraction from αC- and βC-positions. The relative yield ratio [dehalogenation/reduction]/[O-dealkylation] is derived from the relative barriers of H-abstraction at the βC- and αC-positions by CYP3A4, estimated as 0.002 to 0.23, viz., an in vitro measured ratio of 0.04. Importantly, alcoholβ-dehalogen formation points to a new mechanism involving successive oxidation and reduction functions of CYP450, with its precursor aldehydeβ-dehalogen being a key intermediate detected by trapping assays and rationalized by computations. We conclude that the proposed three-step synergy strategy may meet the increasing challenge of elucidating biotransformation mechanisms of substantial synthesized organic compounds in the future.
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Affiliation(s)
- Lihong Chai
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Daxue Road 1, Xuzhou 221116, China
- College of Environmental and Resource Sciences, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
| | - Huanni Zhang
- College of Environmental and Resource Sciences, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
| | - Runqian Song
- College of Environmental and Resource Sciences, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
| | - Haohan Yang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Daxue Road 1, Xuzhou 221116, China
| | - Haiying Yu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Piotr Paneth
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| | - Kasper P Kepp
- DTU Chemistry, Technical University of Denmark, Building 206, Kgs. Lyngby DK-2800, Denmark
| | - Miki Akamatsu
- Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Li Ji
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Daxue Road 1, Xuzhou 221116, China
- College of Environmental and Resource Sciences, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
- Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
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6
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Rao Gajula SN, Pillai MS, Samanthula G, Sonti R. Cytochrome P450 enzymes: a review on drug metabolizing enzyme inhibition studies in drug discovery and development. Bioanalysis 2021; 13:1355-1378. [PMID: 34517735 DOI: 10.4155/bio-2021-0132] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Assessment of drug candidate's potential to inhibit cytochrome P450 (CYP) enzymes remains crucial in pharmaceutical drug discovery and development. Both direct and time-dependent inhibition of drug metabolizing CYP enzymes by the concomitant administered drug is the leading cause of drug-drug interactions (DDIs), resulting in the increased toxicity of the victim drug. In this context, pharmaceutical companies have grown increasingly diligent in limiting CYP inhibition liabilities of drug candidates in the early stages and examining risk assessments throughout the drug development process. This review discusses different strategies and decision-making processes for assessing the drug-drug interaction risks by enzyme inhibition and lays particular emphasis on in vitro study designs and interpretation of CYP inhibition data in a stage-appropriate context.
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Affiliation(s)
- Siva Nageswara Rao Gajula
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research (NIPER), Hyderabad, Balanagar, Telangana, 50003, India
| | - Megha Sajakumar Pillai
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research (NIPER), Hyderabad, Balanagar, Telangana, 50003, India
| | - Gananadhamu Samanthula
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research (NIPER), Hyderabad, Balanagar, Telangana, 50003, India
| | - Rajesh Sonti
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research (NIPER), Hyderabad, Balanagar, Telangana, 50003, India
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7
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Feng L, Ning J, Tian X, Wang C, Yu Z, Huo X, Xie T, Zhang B, James TD, Ma X. Fluorescent probes for the detection and imaging of Cytochrome P450. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213740] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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Temgoua RC, Bussy U, Alvarez-Dorta D, Galland N, Hémez J, Thobie-Gautier C, Tonlé IK, Boujtita M. Using electrochemistry coupled to high resolution mass spectrometry for the simulation of the environmental degradation of the recalcitrant fungicide carbendazim. Talanta 2021; 221:121448. [DOI: 10.1016/j.talanta.2020.121448] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/20/2020] [Accepted: 07/22/2020] [Indexed: 01/28/2023]
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9
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Mehta L, Grover P, Naved T, Mukherjee D. Metabolite Detection and Profiling Using Analytical Methods. CURR PHARM ANAL 2020. [DOI: 10.2174/1573412915666190906142536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To develop effective and safe drugs and to take them to the market in short period of time is
the mission of pharmaceutical research companies. A selection of few of the lead compounds are done
for the evaluation of safety and their ADMET (absorption, distribution, metabolism, excretion and toxicology)
properties are tested in in-vitro (test systems), in-vivo (living organisms) and in-silico (computational
methods). From initial stages to final stages of modern drug discovery processes, the vital tool
for detecting and characterizing metabolites is MS (Mass spectrometry) hyphenated with other techniques.
The methods used for generation of metabolites are in vitro techniques and cell lines (containing
expressing drug metabolizing enzymes and heterologous genes). The use of HPLC-MS/UPLC-MS
and high resolution MS, enables the in depth metabolite detection and profiling studies and it may also
be likely to identify and characterize the site and types of biotransformation.
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Affiliation(s)
| | - Parul Grover
- KIET School of Pharmacy, KIET Institute, Ghaziabad, India
| | - Tanveer Naved
- Amity Institute of Pharmacy, Amity University, Noida, India
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10
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Klimek-Turek A, Misiołek B, Dzido TH. Comparison of the Retention and Separation Selectivity of Aromatic Hydrocarbons with Polar Groups in RP-HPLC Systems with Different Stationary Phases and Eluents. Molecules 2020; 25:molecules25215070. [PMID: 33139630 PMCID: PMC7663032 DOI: 10.3390/molecules25215070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/21/2020] [Accepted: 10/28/2020] [Indexed: 11/07/2022] Open
Abstract
In this manuscript, the retention of aromatic hydrocarbons with polar groups has been compared for systems with various nonpolar columns of the types from C3 to C18 and different mobile phases composed of methanol, acetonitrile, or tetrahydrofuran as modifiers. The selectivity separation of the solutes in systems with different adsorbents, when one eluent modifier is swapped by another, has been explained, taking into account molecular interactions of the solutes with components of the stationary phase region (i.e., extracted modifier depending on the chain length of the stationary phase).
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Affiliation(s)
- Anna Klimek-Turek
- Department of Physical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (B.M.); (T.H.D.)
- Correspondence: ; Tel.: +48-81448-7206
| | - Beata Misiołek
- Department of Physical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (B.M.); (T.H.D.)
- Department for Variations and Renewals of Medicinal Products, The Office for Registration of Medicinal Products, Medical Devices and Biocidal Products, Al. Jerozolimskie 181C, 02-222 Warsaw, Poland
| | - Tadeusz H. Dzido
- Department of Physical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (B.M.); (T.H.D.)
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11
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Delcourt V, Barnabé A, Loup B, Garcia P, André F, Chabot B, Trévisiol S, Moulard Y, Popot MA, Bailly-Chouriberry L. MetIDfyR: An Open-Source R Package to Decipher Small-Molecule Drug Metabolism through High-Resolution Mass Spectrometry. Anal Chem 2020; 92:13155-13162. [DOI: 10.1021/acs.analchem.0c02281] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Vivian Delcourt
- GIE-LCH, Laboratoire des Courses Hippiques, 15 rue de Paradis, 91370 Verrières-le-Buisson, France
| | - Agnès Barnabé
- GIE-LCH, Laboratoire des Courses Hippiques, 15 rue de Paradis, 91370 Verrières-le-Buisson, France
| | - Benoit Loup
- GIE-LCH, Laboratoire des Courses Hippiques, 15 rue de Paradis, 91370 Verrières-le-Buisson, France
| | - Patrice Garcia
- GIE-LCH, Laboratoire des Courses Hippiques, 15 rue de Paradis, 91370 Verrières-le-Buisson, France
| | - François André
- GIE-LCH, Laboratoire des Courses Hippiques, 15 rue de Paradis, 91370 Verrières-le-Buisson, France
| | - Benjamin Chabot
- GIE-LCH, Laboratoire des Courses Hippiques, 15 rue de Paradis, 91370 Verrières-le-Buisson, France
| | - Stéphane Trévisiol
- GIE-LCH, Laboratoire des Courses Hippiques, 15 rue de Paradis, 91370 Verrières-le-Buisson, France
| | - Yves Moulard
- GIE-LCH, Laboratoire des Courses Hippiques, 15 rue de Paradis, 91370 Verrières-le-Buisson, France
| | - Marie-Agnès Popot
- GIE-LCH, Laboratoire des Courses Hippiques, 15 rue de Paradis, 91370 Verrières-le-Buisson, France
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12
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Ji L. Synergy between Experiments and Computations: A Green Channel for Revealing Metabolic Mechanism of Xenobiotics in Chemical Toxicology. Chem Res Toxicol 2020; 33:1539-1550. [DOI: 10.1021/acs.chemrestox.9b00448] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Li Ji
- College of Environmental and Resource Sciences, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
- Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
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13
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Chai L, Ji S, Zhang S, Yu H, Zhao M, Ji L. Biotransformation Mechanism of Pesticides by Cytochrome P450: A DFT Study on Dieldrin. Chem Res Toxicol 2020; 33:1442-1448. [DOI: 10.1021/acs.chemrestox.0c00013] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lihong Chai
- MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
| | - Shujing Ji
- MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
| | - Shubin Zhang
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303, China
- Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Haiying Yu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Yingbin Avenue 688, Jinhua 321004, China
| | - Meirong Zhao
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Li Ji
- MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
- Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
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14
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Oxidative metabolism of typical phenolic compounds of Danshen by electrochemistry coupled to quadrupole time-of-flight tandem mass spectrometry. Food Chem 2020; 315:126270. [PMID: 32028199 DOI: 10.1016/j.foodchem.2020.126270] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/16/2020] [Accepted: 01/19/2020] [Indexed: 11/23/2022]
Abstract
An electrochemistry coupled to online quadrupole time-of-flight tandem mass spectrometry (EC/Q-TOF/MS) was applied to investigate the oxidative transformation and metabolic pathway of five phenolic acids in Danshen sample. Simulation of the phase I oxidative metabolism was carried out in an electrochemical reactor equipped with a glassy carbon working electrode. The phase II reactivity of the generated oxidative products towards biomolecules (such as glutathione) was investigated by ways of covalent adduct formation experiments. The results obtained by EC/MS were compared with well-known in vitro studies by conducting rat liver microsome incubations. Structures of the electrochemically produced metabolites were identified by accurate mass measurement and previously results in vivo metabolites. It was indicated that the electrochemical oxidation was in good accordance with similar products found in vivo experiments. In conclusion, this work confirmed that EC/Q-TOF/MS was a promising analytical tool in the prediction of metabolic transformations of functional foods.
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15
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Fődi T, Ignácz G, Decsi B, Béni Z, Túrós GI, Kupai J, Weiser DB, Greiner I, Huszthy P, Balogh GT. Biomimetic Synthesis of Drug Metabolites in Batch and Continuous-Flow Reactors. Chemistry 2018; 24:9385-9392. [DOI: 10.1002/chem.201800892] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Tamás Fődi
- Compound Profiling Laboratory; Gedeon Richter Plc; Gyömrői út 19-21 1103 Budapest Hungary
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Műegyetem rkp. 3 1111 Budapest Hungary
| | - Gergő Ignácz
- Compound Profiling Laboratory; Gedeon Richter Plc; Gyömrői út 19-21 1103 Budapest Hungary
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Műegyetem rkp. 3 1111 Budapest Hungary
| | - Balázs Decsi
- Compound Profiling Laboratory; Gedeon Richter Plc; Gyömrői út 19-21 1103 Budapest Hungary
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Műegyetem rkp. 3 1111 Budapest Hungary
| | - Zoltán Béni
- Spectroscopic Research Department; Gedeon Richter Plc; Gyömrői út 19-21 1103 Budapest Hungary
| | - György I. Túrós
- Medicinal Chemistry Laboratory II; Gedeon Richter Plc; Gyömrői út 19-21 1103 Budapest Hungary
| | - József Kupai
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Műegyetem rkp. 3 1111 Budapest Hungary
| | - Diána Balogh Weiser
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Műegyetem rkp. 3 1111 Budapest Hungary
- Department of Physical Chemistry and Materials Science; Budapest University of Technology and Economics; Budafoki út 8 1111 Budapest Hungary
| | - István Greiner
- Research Directorate, Chemical Works; Gedeon Richter Plc; Gyömrői út 19-21 1103 Budapest Hungary
| | - Péter Huszthy
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Műegyetem rkp. 3 1111 Budapest Hungary
| | - György T. Balogh
- Compound Profiling Laboratory; Gedeon Richter Plc; Gyömrői út 19-21 1103 Budapest Hungary
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16
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Studies on the metabolism of paeoniflorin in human intestinal microflora by high performance liquid chromatography/electrospray ionization/Fourier transform ion cyclotron resonance mass spectrometry and quadrupole time-of-flight mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1085:63-71. [PMID: 29631252 DOI: 10.1016/j.jchromb.2018.03.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 03/25/2018] [Accepted: 03/26/2018] [Indexed: 12/26/2022]
Abstract
In this study, a high performance liquid chromatography/electrospray ionization/Fourier transform ion cyclotron resonance mass spectrometry and quadrupole time-of-flight mass spectrometry (HPLC-ESI-FT-ICR MS and HPLC-ESI-QTOF MS2) based on chemical profiling method was established to study the metabolites of paeoniflorin in human intestinal microflora (HIM). By virtue of the high resolution, high speed of HPLC and the accurate mass measurement of FT-ICR MS and QTOF MS2, 31 metabolites in methyl tert-butyl ether (MTBE) layer were detected, and the structures of 16 metabolites were identified. Among them, 13 metabolites (including two new compounds) were found for the first time in HIM transformation in vitro. The results indicated that metabolic pathways of paeoniflorin in HIM contained extensive metabolic reactions. The hydrolysis, oxidization and conjugation were major metabolic pathways, and the glycosidic linkage, ester bond, benzene ring and pinane of the structure were metabolic sites. These results would contribute to better understanding the metabolic mechanism of paeoniflorin, thereby to in-depth study and development of paeoniflorin in medicine.
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17
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Ma L, Zhao Y, Zhang X, Liu T, Han F, Yin R. Characterization of the global metabolic profile of liquiritin in rat plasma, urine, bile and feces based on UHPLC-FT-ICR MS. RSC Adv 2018; 8:5945-5952. [PMID: 35539575 PMCID: PMC9078172 DOI: 10.1039/c7ra12529a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 01/19/2018] [Indexed: 11/21/2022] Open
Abstract
Liquiritin is a major flavonoid in Radix Glycyrrhizae and it has been reported to possess various pharmacological activities. In the present work, a strategy based on an ultra high performance liquid chromatography combined with Fourier transform ion cyclotron resonance mass spectrometry (UHPLC-FT-ICR MS) method was proposed to systematically characterize the in vivo metabolites of liquiritin for the first time. After oral administration of liquiritin to rats in a single dose of 120 mg kg−1, the rat plasma, urine, feces and bile samples were collected and used to discover metabolites. As a result, besides the parent drug, a total of 76 metabolites (6 phase I and 70 phase II metabolites) of liquiritin were detected and tentatively identified. It was indicated that the metabolic pathways of liquiritin in rats included oxidation, reduction, deglycosylation, isomerization, methylation, glucuronidation and sulfation. In summary, the results could provide valuable information regarding the metabolism of liquiritin in rats, which could contribute to a better understanding of its action mechanism. Liquiritin is a major flavonoid in Radix Glycyrrhizae and it has been reported to possess various pharmacological activities.![]()
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Affiliation(s)
- Li Ma
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Yangyang Zhao
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Xiaoxue Zhang
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Tianfeng Liu
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Fei Han
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Ran Yin
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
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18
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Souza Anselmo C, Sardela VF, Matias BF, Carvalho AR, Sousa VP, Pereira HMG, Aquino Neto FR. Is zebrafish
(
Danio rerio
)
a tool for human‐like metabolism study? Drug Test Anal 2017; 9:1685-1694. [DOI: 10.1002/dta.2318] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/26/2017] [Accepted: 09/27/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Carina Souza Anselmo
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Vinicius Figueiredo Sardela
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Bernardo Fonseca Matias
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Amanda Reis Carvalho
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Valeria Pereira Sousa
- Federal University of Rio de Janeiro, Faculty of PharmacyDepartment of Drugs and Pharmaceutics Av. Carlos Chagas Filho, 373, bloco Bss, 36 ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐170 Brazil
| | - Henrique Marcelo Gualberto Pereira
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Francisco Radler Aquino Neto
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
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19
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Noe DA. Some Methodologic Considerations in the Assessment of Methods for Predicting Pharmacokinetic Drug-Drug Interactions. Clin Pharmacol Drug Dev 2017; 6:529-533. [PMID: 28741311 DOI: 10.1002/cpdd.373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 06/06/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Dennis A Noe
- Metrum Research Group, 2 Tunxis Rd #112, Tariffville, CT, USA
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20
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Pharmacokinetic study based on a matrix-assisted laser desorption/ionization quadrupole ion trap time-of-flight imaging mass microscope combined with a novel relative exposure approach: A case of octreotide in mouse target tissues. Anal Chim Acta 2017; 952:71-80. [DOI: 10.1016/j.aca.2016.11.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/03/2016] [Accepted: 11/24/2016] [Indexed: 12/17/2022]
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21
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Prabhala BK, Mirza O, Højrup P, Hansen PR. Characterization of Synthetic Peptides by Mass Spectrometry. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2016; 1348:77-82. [PMID: 26424265 DOI: 10.1007/978-1-4939-2999-3_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Mass spectrometry (MS) is well suited for analysis of the identity and purity of synthetic peptides. The sequence of a synthetic peptide is most often known, so the analysis is mainly used to confirm the identity and purity of the peptide. Here, simple procedures are described for MALDI-TOF-MS and LC-MS of synthetic peptides.
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Affiliation(s)
- Bala K Prabhala
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Osman Mirza
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Peter Højrup
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Paul R Hansen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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22
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Grand-Guillaume Perrenoud A, Guillarme D, Boccard J, Veuthey JL, Barron D, Moco S. Ultra-high performance supercritical fluid chromatography coupled with quadrupole-time-of-flight mass spectrometry as a performing tool for bioactive analysis. J Chromatogr A 2016; 1450:101-11. [DOI: 10.1016/j.chroma.2016.04.053] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 04/15/2016] [Accepted: 04/18/2016] [Indexed: 11/26/2022]
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23
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Liu L, Miao MX, Zhong ZY, Xu P, Chen Y, Liu XD. Chronic administration of caderofloxacin, a new fluoroquinolone, increases hepatic CYP2E1 expression and activity in rats. Acta Pharmacol Sin 2016; 37:561-70. [PMID: 26838075 DOI: 10.1038/aps.2015.160] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 10/22/2015] [Indexed: 02/07/2023] Open
Abstract
AIM Caderofloxacin is a new fluoroquinolone that is under phase III clinical trials in China. Here we examined the effects of caderofloxacin on rat hepatic cytochrome P450 (CYP450) isoforms as well as the potential of caderofloxacin interacting with co-administered drugs. METHODS Male rats were treated with caderofloxacin (9 mg/kg, ig) once or twice daily for 14 consecutive days. The effects of caderofloxacin on CYP3A, 2D6, 2C19, 1A2, 2E1 and 2C9 were evaluated using a "cocktail" of 6 probes (midazolam, dextromethorphan, omeprazole, theophylline, chlorzoxazone and diclofenac) injected on d 0 (prior to caderofloxacin exposure) and d 15 (after caderofloxacin exposure). Hepatic microsomes from the caderofloxacin-treated rats were used to assess CYP2E1 activity and chlorzoxazone metabolism. The expression of CYP2E1 mRNA and protein in hepatic microsomes was analyzed with RT-PCR and Western blotting, respectively. RESULTS Fourteen-day administration of caderofloxacin significantly increased the activity of hepatic CYP2E1, leading to enhanced metabolism of chlorzoxazone. In vitro microsomal study confirmed that CYP2E1 was a major metabolic enzyme involved in chlorzoxazone metabolism, and the 14-d administration of caderofloxacin significantly increased the activity of CYP2E1 in hepatic microsomes, resulting in increased formation of 6-hydroxychlorzoxazone. Furthermore, the 14-d administration of caderofloxacin significantly increased the expression of CYP2E1 mRNA and protein in liver microsomes, which was consistent with the pharmacokinetic results. CONCLUSION Fourteen-day administration of caderofloxacin can induce the expression and activity of hepatic CYP2E1 in rats. When caderofloxacin is administered, a potential drug-drug interaction mediated by CYP2E1 induction should be considered.
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24
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Wang Y, Zhao M, Ou Y, Zeng B, Lou X, Wang M, Zhao C. Metabolic profile of esculin in rats by ultra high performance liquid chromatography combined with Fourier transform ion cyclotron resonance mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1020:120-8. [PMID: 27038404 DOI: 10.1016/j.jchromb.2016.03.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 03/12/2016] [Accepted: 03/19/2016] [Indexed: 12/19/2022]
Abstract
Esculin, a coumarin derivative found in Fraxinus rhynchophylla, has been reported to possess multiple biological activities. This present study is designed to investigate the metabolic profile of esculin in vivo based on ultra high performance liquid chromatography coupled to Fourier transform ion cyclotron resonance mass spectrometry (UHPLC-FT-ICR-MS) for the first time. After oral administration of esculin (100 mg/kg) for rats, plasma, urine, feces and bile samples were collected to screen metabolites. As a result, a total of 19 metabolites (10 phase I metabolites and 9 phase II metabolites) were found and identified. Results showed that metabolic pathways of esculin included hydrolysis, dehydrogenation, hydroxylation, methylation, dehydrogenation, glucuronidation, sulfation, and glycine conjugation. It was also found that after oral administration of esculin, the esculin could be metabolized to esculetin in vivo via deglycosylation, and esculetin was found in all biological samples. This study also laid solid basis for in-depth development of esculin and provided important information for clarifying the biotransformation process of esculin in vivo.
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Affiliation(s)
- Yinan Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Min Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Yingfu Ou
- Medicine Experiment Center, School of Medicine, Eastern Liaoning University, Dandong 118002, China
| | - Bowen Zeng
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Xinyu Lou
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Miao Wang
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Chunjie Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China.
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25
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Multiple stage MS in analysis of plasma, serum, urine and in vitro samples relevant to clinical and forensic toxicology. Bioanalysis 2016; 8:457-81. [DOI: 10.4155/bio.16.15] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This paper reviews MS approaches applied to metabolism studies, structure elucidation and qualitative or quantitative screening of drugs (of abuse) and/or their metabolites. Applications in clinical and forensic toxicology were included using blood plasma or serum, urine, in vitro samples, liquids, solids or plant material. Techniques covered are liquid chromatography coupled to low-resolution and high-resolution multiple stage mass analyzers. Only PubMed listed studies published in English between January 2008 and January 2015 were considered. Approaches are discussed focusing on sample preparation and mass spectral settings. Comments on advantages and limitations of these techniques complete the review.
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26
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Han F, Li YT, Mao XJ, Zhang XS, Guan J, Song AH, Yin R. Metabolic profile of salidroside in rats using high-performance liquid chromatography combined with Fourier transform ion cyclotron resonance mass spectrometry. Anal Bioanal Chem 2015; 408:1975-81. [DOI: 10.1007/s00216-015-9080-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 09/22/2015] [Accepted: 09/24/2015] [Indexed: 01/20/2023]
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27
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de Raad M, Fischer CR, Northen TR. High-throughput platforms for metabolomics. Curr Opin Chem Biol 2015; 30:7-13. [PMID: 26544850 DOI: 10.1016/j.cbpa.2015.10.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Accepted: 10/11/2015] [Indexed: 01/06/2023]
Abstract
Mass spectrometry has become a choice method for broad-spectrum metabolite analysis in both fundamental and applied research. This can range from comprehensive analysis achieved through time-consuming chromatography to the rapid analysis of a few target metabolites without chromatography. In this review article, we highlight current high-throughput MS-based platforms and their potential application in metabolomics. Although current MS platforms can reach throughputs up to 0.5 seconds per sample, the metabolite coverage of these platforms are low compared to low-throughput, separation-based MS methods. High-throughput comes at a cost, as it's a trade-off between sample throughput and metabolite coverage. As we will discuss, promising emerging technologies, including microfluidics and miniaturization of separation techniques, have the potential to achieve both rapid and more comprehensive metabolite analysis.
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Affiliation(s)
- Markus de Raad
- Life Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, United States
| | - Curt R Fischer
- Life Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, United States
| | - Trent R Northen
- Life Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, United States.
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28
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Dahlinger D, Duechting S, Nuecken D, Sydow K, Fuhr U, Frechen S. Development and validation of an in vitro, seven-in-one human cytochrome P450 assay for evaluation of both direct and time-dependent inhibition. J Pharmacol Toxicol Methods 2015; 77:66-75. [PMID: 26528794 DOI: 10.1016/j.vascn.2015.10.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 09/23/2015] [Accepted: 10/27/2015] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Direct and time-dependent inhibition (TDI) of cytochrome P450 enzymes (CYP) raises drug safety concerns and has major implications in drug development. This study describes the development of a liquid chromatography-tandem mass spectrometry (LC-MS/MS) based screening tool to simultaneously assess both the direct and the time-dependent inhibitory potential of xenobiotics on the seven major CYPs using a two-step approach. METHODS The in vitro cocktail of FDA recognized model substrates was incubated with human liver microsomes (HLM) and consisted of caffeine (CYP1A2), bupropion (CYP2B6), rosiglitazone (CYP2C8), tolbutamide (CYP2C9), omeprazole (CYP2C19), dextromethorphan (CYP2D6) and midazolam (CYP3A4). Direct and time-dependent inhibitory profiles of direct and time-dependent reference inhibitors for each CYP were studied. For validation, the results were compared to those obtained with the traditional single substrate approach. Statistical uncertainty was quantified using the bootstrap method. RESULTS The direct inhibition assay showed an acceptable fold bias of 1.35 (geometric mean fold absolute deviation, range 1.01-2.61) in the IC50 values for the cocktail assay compared to the single substrate results with no trend for under- or overestimation. Using a single point inactivation assay to assess TDI, we were able to identify all seven tested time-dependent reference inhibitors, without any false negatives. DISCUSSION The presented design enhances throughput by assessing the seven major CYPs simultaneously and allows for detection of and discrimination between direct and time-dependent CYP inhibition via IC50 and single point inactivation experiments. For the latter, a threshold of 10% TDI is proposed for carrying out more detailed inactivation kinetic experiments.
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Affiliation(s)
- Dominik Dahlinger
- Department of Pharmacology, Clinical Pharmacology, Cologne University Hospital, Cologne, Germany.
| | - Sabrina Duechting
- Department of Pharmacology, Clinical Pharmacology, Cologne University Hospital, Cologne, Germany
| | - Daniela Nuecken
- Department of Pharmacology, Clinical Pharmacology, Cologne University Hospital, Cologne, Germany
| | - Konrad Sydow
- Department of Pharmacology, Clinical Pharmacology, Cologne University Hospital, Cologne, Germany
| | - Uwe Fuhr
- Department of Pharmacology, Clinical Pharmacology, Cologne University Hospital, Cologne, Germany
| | - Sebastian Frechen
- Department of Pharmacology, Clinical Pharmacology, Cologne University Hospital, Cologne, Germany
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29
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Liu JY, Tsai HJ, Morisseau C, Lango J, Hwang SH, Watanabe T, Kim IH, Hammock BD. In vitro and in vivo metabolism of N-adamantyl substituted urea-based soluble epoxide hydrolase inhibitors. Biochem Pharmacol 2015; 98:718-31. [PMID: 26494425 DOI: 10.1016/j.bcp.2015.10.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Accepted: 10/15/2015] [Indexed: 12/16/2022]
Abstract
N,N'-disubstituted urea-based soluble epoxide hydrolase (sEH) inhibitors are promising therapeutics for hypertension, inflammation, and pain in multiple animal models. The drug absorption and pharmacological efficacy of these inhibitors have been reported extensively. However, the drug metabolism of these inhibitors is not well described. Here we reported the metabolic profile and associated biochemical studies of an N-adamantyl urea-based sEH inhibitor 1-adamantan-1-yl-3-(5-(2-(2-ethoxyethoxy)ethoxy)pentyl)urea (AEPU) in vitro and in vivo. The metabolites of AEPU were identified by interpretation of liquid chromatography-mass spectrometry (LC-MS), liquid chromatography-tandem mass spectrometry (LC-MS/MS) and/or NMR. In vitro, AEPU had three major positions for phase I metabolism including oxidations on the adamantyl moiety, urea nitrogen atoms, and cleavage of the polyethylene glycol chain. In a rodent model, the metabolites from the hydroxylation on the adamantyl group and nitrogen atom were existed in blood while the metabolites from cleavage of polyethylene glycol chain were not found in urine. The major metabolite found in rodent urine was 3-(3-adamantyl-ureido)-propanoic acid, a presumably from cleavage and oxidation of the polyethylene glycol moiety. All the metabolites found were active but less potent than AEPU at inhibiting human sEH. Furthermore, cytochrome P450 (CYP) 3A4 was found to be a major enzyme mediating AEPU metabolism. In conclusion, the metabolism of AEPU resulted from oxidation by CYP could be shared with other N-adamantyl-urea-based compounds. These findings suggest possible therapeutic roles for AEPU and new strategies for drug design in this series of possible drugs.
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Affiliation(s)
- Jun-Yan Liu
- Center for Nephrology and Clinical Metabolomics, Division of Nephrology and Rheumatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 210072, PR China; Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Hsing-Ju Tsai
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Christophe Morisseau
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Jozsef Lango
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Sung Hee Hwang
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Takaho Watanabe
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - In-Hae Kim
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Bruce D Hammock
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA.
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Lue SW, Repin M, Mahnke R, Brenner DJ. Development of a High-Throughput and Miniaturized Cytokinesis-Block Micronucleus Assay for Use as a Biological Dosimetry Population Triage Tool. Radiat Res 2015; 184:134-42. [PMID: 26230078 DOI: 10.1667/rr13991.1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Biodosimetry is an essential tool for providing timely assessments of radiation exposure. For a large mass-casualty event involving exposure to ionizing radiation, it is of utmost importance to rapidly provide dose information for medical treatment. The well-established cytokinesis-block micronucleus (CBMN) assay is a validated method for biodosimetry. However, the need for an accelerated sample processing is required for the CBMN assay to be a suitable population triage tool. We report here on the development of a high-throughput and miniaturized version of the CMBN assay for accelerated sample processing.
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Affiliation(s)
- Stanley W Lue
- a Center for Radiological Research, Department of Radiation Oncology, Columbia University Medical Center, New York, New York 10032; and
| | - Mikhail Repin
- a Center for Radiological Research, Department of Radiation Oncology, Columbia University Medical Center, New York, New York 10032; and
| | - Ryan Mahnke
- b Northrop Grumman, Elkridge, Maryland 21075
| | - David J Brenner
- a Center for Radiological Research, Department of Radiation Oncology, Columbia University Medical Center, New York, New York 10032; and
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31
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Metabolic profile of 2-(2-hydroxypropanamido) benzoic acid in rats by ultra high performance liquid chromatography combined with Fourier transform ion cyclotron resonance mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 993-994:60-8. [DOI: 10.1016/j.jchromb.2015.04.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 04/19/2015] [Accepted: 04/25/2015] [Indexed: 11/23/2022]
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32
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Langmajerová M, Řemínek R, Pelcová M, Foret F, Glatz Z. Combination of on-line CE assay with MS detection for the study of drug metabolism by cytochromes P450. Electrophoresis 2015; 36:1365-73. [DOI: 10.1002/elps.201400394] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 01/09/2015] [Accepted: 01/29/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Monika Langmajerová
- Department of Biochemistry; Faculty of Science and CEITEC - Central European Institute of Technology, Masaryk University; Brno Czech Republic
| | - Roman Řemínek
- Department of Biochemistry; Faculty of Science and CEITEC - Central European Institute of Technology, Masaryk University; Brno Czech Republic
| | - Marta Pelcová
- Department of Biochemistry; Faculty of Science and CEITEC - Central European Institute of Technology, Masaryk University; Brno Czech Republic
| | - František Foret
- Department of Biochemistry; Faculty of Science and CEITEC - Central European Institute of Technology, Masaryk University; Brno Czech Republic
| | - Zdeněk Glatz
- Department of Biochemistry; Faculty of Science and CEITEC - Central European Institute of Technology, Masaryk University; Brno Czech Republic
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Abstract
Drug metabolism can produce metabolites with physicochemical and pharmacological properties that differ substantially from those of the parent drug, and consequently has important implications for both drug safety and efficacy. To reduce the risk of costly clinical-stage attrition due to the metabolic characteristics of drug candidates, there is a need for efficient and reliable ways to predict drug metabolism in vitro, in silico and in vivo. In this Perspective, we provide an overview of the state of the art of experimental and computational approaches for investigating drug metabolism. We highlight the scope and limitations of these methods, and indicate strategies to harvest the synergies that result from combining measurement and prediction of drug metabolism.
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Spaggiari D, Mehl F, Desfontaine V, Grand-Guillaume Perrenoud A, Fekete S, Rudaz S, Guillarme D. Comparison of liquid chromatography and supercritical fluid chromatography coupled to compact single quadrupole mass spectrometer for targeted in vitro metabolism assay. J Chromatogr A 2014; 1371:244-56. [DOI: 10.1016/j.chroma.2014.10.055] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 10/06/2014] [Accepted: 10/19/2014] [Indexed: 12/19/2022]
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35
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Coupling ultra-high-pressure liquid chromatography with mass spectrometry for in-vitro drug-metabolism studies. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.06.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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36
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A cocktail approach for assessing the in vitro activity of human cytochrome P450s: An overview of current methodologies. J Pharm Biomed Anal 2014; 101:221-37. [DOI: 10.1016/j.jpba.2014.03.018] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 03/13/2014] [Indexed: 01/27/2023]
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37
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Bussy U, Chung-Davidson YW, Li K, Li W. Phase I and phase II reductive metabolism simulation of nitro aromatic xenobiotics with electrochemistry coupled with high resolution mass spectrometry. Anal Bioanal Chem 2014; 406:7253-60. [PMID: 25234306 DOI: 10.1007/s00216-014-8171-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 09/03/2014] [Accepted: 09/05/2014] [Indexed: 01/25/2023]
Abstract
Electrochemistry combined with (liquid chromatography) high resolution mass spectrometry was used to simulate the general reductive metabolism of three biologically important nitro aromatic molecules: 3-trifluoromethyl-4-nitrophenol (TFM), niclosamide, and nilutamide. TFM is a pesticide used in the Laurential Great Lakes while niclosamide and nilutamide are used in cancer therapy. At first, a flow-through electrochemical cell was directly connected to a high resolution mass spectrometer to evaluate the ability of electrochemistry to produce the main reduction metabolites of nitro aromatic, nitroso, hydroxylamine, and amine functional groups. Electrochemical experiments were then carried out at a constant potential of -2.5 V before analysis of the reduction products by LC-HRMS, which confirmed the presence of the nitroso, hydroxylamine, and amine species as well as dimers. Dimer identification illustrates the reactivity of the nitroso species with amine and hydroxylamine species. To investigate xenobiotic metabolism, the reactivity of nitroso species to biomolecules was also examined. Binding of the nitroso metabolite to glutathione was demonstrated by the observation of adducts by LC-ESI(+)-HRMS and the characteristics of their MSMS fragmentation. In conclusion, electrochemistry produces the main reductive metabolites of nitro aromatics and supports the observation of nitroso reactivity through dimer or glutathione adduct formation.
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Affiliation(s)
- Ugo Bussy
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, 48824, USA
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38
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Liu X, Wang S, Ding L, Chen X, Shen W, Dong X, Yun C, Lin H. Liquid chromatography/quadrupole time-of-flight mass spectrometry in combination with online hydrogen/deuterium exchange technique for structural elucidation of phase I metabolites ofiso-phenylcyclopentylamine in rat bile. Biomed Chromatogr 2014; 28:1335-44. [DOI: 10.1002/bmc.3170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 01/20/2014] [Accepted: 01/28/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaoxue Liu
- Department of Pharmaceutical Analysis; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 China
| | - Suilou Wang
- Department of Pharmaceutical Analysis; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 China
| | - Li Ding
- Department of Pharmaceutical Analysis; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 China
| | - Xiaoping Chen
- Beijing Shiqiao Biological and Pharmaceutical Co. Ltd; Beijing China
| | - Wenbin Shen
- Center for instrumental analysis; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 China
| | - Xin Dong
- State Key Laboratory of Natural Medicines; China Pharmaceutical University; Nanjing 21009 China
| | - Changhong Yun
- Department of Pharmaceutical Analysis; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 China
| | - Hongda Lin
- Department of Pharmaceutical Analysis; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 China
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39
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Shanmuganathan M, Britz-McKibbin P. High quality drug screening by capillary electrophoresis: A review. Anal Chim Acta 2013; 773:24-36. [DOI: 10.1016/j.aca.2013.01.061] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/24/2013] [Accepted: 01/29/2013] [Indexed: 01/23/2023]
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Zientek M, Youdim K. Simultaneous determination of multiple CYP inhibition constants using a cocktail-probe approach. Methods Mol Biol 2013; 987:11-23. [PMID: 23475664 DOI: 10.1007/978-1-62703-321-3_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
To identify cytochrome P450 (CYP) drug-drug interaction (DDI) potential of a new chemical entity, the use of a specific clinically relevant probe substrate in the presence of a test compound is common place. In early discovery of new chemical entities, a balance of rigor, the ability to predict clinical DDI, and throughput is desired in an in vitro assay. This chapter describes a high-throughput CYP-mediated DDI assay method that balances these characteristics. The method utilizes a cassette approach using a cocktail of five selective probe substrates for the major clinically relevant CYPs involved in drug interactions. CYP1A2, 2C9, 2C19, 2D6, and 3A activities are assessed with liquid chromatography/tandem mass spectrometry (LC-MS/MS) quantification of metabolite formation. The method also outlines specific inhibitors to evaluate dynamic range and as a positive control. The benefits and needs for caution of this method are noted and discussed.
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41
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Stariat J, Kovaříková P, Kučera R, Klimeš J, Kalinowski DS, Richardson DR, Ketola RA. Identification of in vitro metabolites of the novel anti-tumor thiosemicarbazone, DpC, using ultra-high performance liquid chromatography–quadrupole-time-of-flight mass spectrometry. Anal Bioanal Chem 2012. [DOI: 10.1007/s00216-012-6562-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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42
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Abstract
New analytical platforms have been developed in response to the need for attaining increased peak capacity for multicomponent complex analysis with higher sensitivity and characterization of the analytes, and high-throughput capabilities. This review outlines the fundamental principles of target and comprehensive 2D LC method development and encompasses applications of LC–LC and LC × LC coupled to MS in bioanalysis using a variety of online analytical procedures. It also provides a rationale for the usage of the most employed mass analyzers and ionization sources on these platforms.
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43
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Nováková L. Challenges in the development of bioanalytical liquid chromatography-mass spectrometry method with emphasis on fast analysis. J Chromatogr A 2012; 1292:25-37. [PMID: 22999195 DOI: 10.1016/j.chroma.2012.08.087] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 08/26/2012] [Accepted: 08/29/2012] [Indexed: 01/21/2023]
Abstract
The development of bioanalytical methods has become more and more challenging over the past years due to very demanding requirements in terms of method reliability, sensitivity, speed of analysis and sample throughput. LC-MS/MS has established itself as a method of choice for routine analysis of biological materials. A development of such method consists of several steps including sample preparation and clean-up step, efficient chromatographic separation, sensitive and selective detection of analytes in complex matrices, a choice of convenient data processing and calibration approach and finally method validation. Each of these steps has its own constraints and challenges, which are discussed in detail in this review. Novel and modern approaches in sample preparation, chromatography and detection are especially emphasized. Attention is paid to proper calibration approach and matrix effects that can seriously affect method accuracy and precision.
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Affiliation(s)
- Lucie Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
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44
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SPE–MS analysis of absorption, distribution, metabolism and excretion assays: a tool to increase throughput and steamline workflow. Bioanalysis 2012; 4:1111-21. [DOI: 10.4155/bio.12.86] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In an effort to create faster and more efficient bioanalytical methods for drug development, many investigators have evaluated a variety of SPE–MS systems. Over the past 15 years online systems have evolved from run times of >1.5 min/sample to <10 s/sample. High-throughput SPE–MS methods for in vitro absorption, distribution, metabolism and excretion screening assays have been described by several laboratories and shown to produce results comparable to conventional LC–MS/MS systems. While quantitative analysis of small molecules in biological matrixes holds many challenges, for several applications SPE–MS methods have achieved comparable results to LC–MS/MS with the benefit of 10–30-times the throughput. Based on its distinct advantages of throughput and streamlined workflow efficiencies, SPE–MS is a useful tool for the analysis of many in vitro absorption, distribution, metabolism and excretion assays and in vivo bioanalytical studies. Further development of SPE–MS methods and analysis workflows has the potential to expand the capabilities of this technology for other challenging bioanalytical applications.
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45
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Hui JPM, Stuart Grossert J, Cutler MJ, Melanson JE. Strategic identification of in vitro metabolites of 13-desmethyl spirolide C using liquid chromatography/high-resolution mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:345-354. [PMID: 22223322 DOI: 10.1002/rcm.5336] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A strategy to identify metabolites of a marine biotoxin, 13-desmethyl spirolide C, has been developed using liquid chromatography coupled to high-resolution mass spectrometry (LC/HRMS). Metabolites were generated in vitro through incubation with human liver microsomes. A list of metabolites was established by selecting precursor ions of a common fragment ion characteristic of the spirolide toxin which was known to contain a cyclic imine ring. Accurate mass measurements were subsequently used to confirm the molecular formula of each biotransformation product. Using this approach, a total of nine phase I metabolites was successfully identified with deviations of mass accuracy less than 2 ppm. The biotransformations observed included hydroxylation, dihydroxylation, oxidation of a quaternary methyl group to hydroxymethyl or carboxylic acid groups, dehydrogenation and hydroxylation, as well as demethylation and dihydroxylation reactions. In a second step, tandem mass spectrometry (MS/MS) was performed to elucidate structures of the metabolites. Using the unique fragment ions in the spectra, the structures of the three major metabolites, 13,19-didesmethyl-19-carboxy spirolide C, 13,19-didesmethyl-19-hydroxymethyl spirolide C and 13-desmethyl-17-hydroxy spirolide C, were assigned. Levels of 13-desmethyl spirolide C and its metabolites were monitored at selected time points over a 32-h incubation period with human liver microsomes. It was determined that 13,19-didesmethyl-19-carboxy spirolide C became the predominant metabolite after 2 h of incubation. The stability plot of 13-desmethyl spirolide C showed first-order kinetics for its metabolism and the intrinsic clearance was calculated to be 41 μL/min/mg, suggesting first-pass metabolism may contribute to limiting oral toxicity of 13-desmethyl spirolide C.
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Affiliation(s)
- Joseph P M Hui
- National Research Council of Canada, Institute for Marine Biosciences, 1411 Oxford St., Halifax, Nova Scotia, B3H 3Z1, Canada
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Gómez-Lechón MJ, Lahoz A, Castell JV, Donato MT. Evaluation of cytochrome P450 activities in human hepatocytes in vitro. Methods Mol Biol 2012; 806:87-97. [PMID: 22057447 DOI: 10.1007/978-1-61779-367-7_7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Major hepatic cytochrome P450 activities (CYP1A2, CYP2A6, CYP2B6, CYP2C9, CYP2C19, CYP2D6, CYP2E1, and CYP3A4) can be simultaneously examined in human hepatocytes by incubation with a cocktail of multiple specific probes. Cocktail strategy in combination with mass spectrometry is shown to be a robust, fast, and sensitive procedure for P450 activity assessment. This procedure allows a drastic reduction of the number of cells required in the assay and sample analysis time and increases throughput and reproducibility. Major applications of the probe cocktail strategy are P450 phenotyping of hepatocytes and induction studies.
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Affiliation(s)
- María José Gómez-Lechón
- Unidad de Hepatología Experimental, Centro de Investigación. Hospital La Fe, Valencia, Spain.
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47
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Development and validation of a fast and sensitive UPLC–MS/MS method for the quantification of six probe metabolites for the in vitro determination of cytochrome P450 activity. Talanta 2012; 89:209-16. [DOI: 10.1016/j.talanta.2011.11.083] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 11/18/2011] [Accepted: 11/27/2011] [Indexed: 12/20/2022]
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48
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Harskamp J, Britz-McKibbin P, Wilson JY. Functional screening of cytochrome P450 activity and uncoupling by capillary electrophoresis. Anal Chem 2011; 84:862-6. [PMID: 22148186 DOI: 10.1021/ac202787n] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Cytochrome P450s (CYPs) are functionally diverse monooxygenases responsible for oxidation of endogenous and xenobiotic compounds. The function of nonmammalian CYPs are largely unknown and tools for characterization limited. CYPs critical for xenobiotic metabolism are prone to catalytic cycle uncoupling resulting in reactive oxygen species (ROS) generation that is highly dependent on the specific CYP isoform and substrate interaction. This study describes the rapid assessment of the activity and coupling efficiency of CYPs using capillary electrophoresis with UV detection. The coupling efficiency of five zebrafish (Danio rerio) CYP1 isoforms with a series of fluorogenic substrate probes was determined by the rate of NADP(+) formation and compared with fluorescent product turnover rates. In most cases, NADP(+) formation significantly overestimated CYP1 catalytic activity for substrate O-dealkylation suggesting uncoupling. ROS production was confirmed by elevated hydrogen peroxide generation in poorly coupled reactions. Reactions with β-estradiol confirmed that CYP1A, 1C1, and 1C2 have greater catalytic activity and coupling efficiency; CYP1B1 and 1D1 had coupling efficiencies under 4%. This work highlights the wide disparity in uncoupling induced by unproductive substrate binding among different CYP isoforms.
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49
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Traylor MJ, Ryan JD, Arnon ES, Dordick JS, Clark DS. Rapid and quantitative measurement of metabolic stability without chromatography or mass spectrometry. J Am Chem Soc 2011; 133:14476-9. [PMID: 21766815 DOI: 10.1021/ja203172c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Metabolic stability measurements are a critical component of preclinical drug development. Available measurement strategies rely on chromatography and mass spectrometry, which are expensive and labor intensive. We have developed a general method to determine the metabolic stability of virtually any compound by quantifying cofactors in the mechanism of cytochrome P450 enzymes using fluorescence intensity measurements. While many previous studies have shown that simple measurements of cofactor depletion do not correlate with substrate conversion (i.e., metabolic stability) in P450 systems, the present work employs a reaction engineering approach to simplify the overall rate equation, thus allowing the accurate and quantitative determination of substrate depletion from simultaneous measurements of NADPH and oxygen depletion. This method combines the accuracy and generality of chromatography with the ease, throughput, and real-time capabilities of fluorescence.
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Affiliation(s)
- Matthew J Traylor
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
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50
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O'Reilly E, Köhler V, Flitsch SL, Turner NJ. Cytochromes P450 as useful biocatalysts: addressing the limitations. Chem Commun (Camb) 2011; 47:2490-501. [DOI: 10.1039/c0cc03165h] [Citation(s) in RCA: 199] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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