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Cid-Barrio L, Calderón-Celis F, Costa-Fernández JM, Encinar JR. Assessment of the Potential and Limitations of Elemental Mass Spectrometry in Life Sciences for Absolute Quantification of Biomolecules Using Generic Standards. Anal Chem 2020; 92:13500-13508. [PMID: 32842726 DOI: 10.1021/acs.analchem.0c02942] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Inductively coupled plasma-mass spectrometry (ICP-MS) has been widely used in Life Sciences for the absolute quantification of biomolecules without specific standards, assuming the same response for generic compounds including complex biomolecules. However, contradictory results have been published on this regard. We present the first critical statistical comparison of the ICP-MS response factors obtained for 14 different relevant S-containing biomolecules (three peptides, four proteins, one amino acid, two cofactors, three polyethylene glycol (PEG) derivatives, and sulfate standard), covering a wide range of hydrophobicities and molecular sizes. Two regular flow nebulizers and a total consumption nebulizer (TCN) were tested. ICP-MS response factors were determined though calibration curves, and isotope dilution analysis was used to normalize the results. No statistical differences have been found for low-molecular-weight biocompounds, PEGs, and nonhydrophobic peptides using any of the nebulizers tested. Interestingly, while statistical differences were still found negligible (96-104%) for the proteins and hydrophobic peptide using the TCN, significantly lower response factors (87-40%) were obtained using regular flow nebulizers. Such differential behavior seems to be related mostly to hydrophobicity and partially to the molecular weight. Findings were validated using IDA in intact and digested bovine serum albumin solutions using the TCN (98 and 100%, respectively) and the concentric nebulizer (73 and 97%, respectively). Additionally, in the case of a phosphoprotein, results were corroborated using the P trace in parallel to the S trace used along the manuscript. This work seems to suggest that ICP-MS operated with regular nebulizers can offer absolute quantification using generic standards for most biomolecules except proteins and hydrophobic peptides.
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Affiliation(s)
- Laura Cid-Barrio
- Department of Physical and Analytical Chemistry, University of Oviedo, Av. Julian Clavería 8, 33006 Oviedo, Spain
| | - Francisco Calderón-Celis
- Department of Physical and Analytical Chemistry, University of Oviedo, Av. Julian Clavería 8, 33006 Oviedo, Spain
| | - José Manuel Costa-Fernández
- Department of Physical and Analytical Chemistry, University of Oviedo, Av. Julian Clavería 8, 33006 Oviedo, Spain
| | - Jorge Ruiz Encinar
- Department of Physical and Analytical Chemistry, University of Oviedo, Av. Julian Clavería 8, 33006 Oviedo, Spain
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Saurina J, Sentellas S. Liquid chromatography coupled to mass spectrometry for metabolite profiling in the field of drug discovery. Expert Opin Drug Discov 2019; 14:469-483. [DOI: 10.1080/17460441.2019.1582638] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Javier Saurina
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Barcelona, Spain
| | - Sonia Sentellas
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Barcelona, Spain
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Sang Z, Long H, Yang T, Ye W, Yang X, Chen G, Wang Z, Luo Y. The in vivo and in vitro phase I metabolism of FYL-67, a novel oxazolidinone antibacterial drug, studied by LC-MS/MS. Drug Test Anal 2015; 8:976-84. [PMID: 26472252 DOI: 10.1002/dta.1887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 08/17/2015] [Accepted: 08/24/2015] [Indexed: 02/05/2023]
Abstract
In our previous study, FYL-67, a novel linezolid analogue with the morpholinyl ring replaced by a 4-(pyridin-2-yl)-1H-pyrazol-1-yl group, was demonstrated to own an excellent activity against Gram-positive organisms,such as methicillin-resistant Staphylococcus aureus (MRSA). However, metabolic biotransformation was not investigated. This study was performed to identify the phase I metabolites of FYL-67 using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The chemical structures were confirmed by comparison with corresponding chemical standards obtained internal. Primary elucidation of the metabolic pathway of FYL-67 in vitro was performed using liver preparations (microsomes and hepatocytes) from rats and humans, and SD (Sprague Dawley, rat, rattus norvegicus) rats were used for the study of in vivo approach. To the end, two metabolites (M1 and M2 ) were detected after in vitro as well as in vivo experiments. Based on LC-MS/MS analyses, the metabolites were demonstrated to be 5-(aminomethyl)-3-(3-fluoro-4-(4-(pyridin-2-yl)-1H-pyrazol-1-yl)phenyl)oxazolidin-2-one (M1 ) and 3-(3-fluoro-4-(4-(pyridin-2-yl)-1H-pyrazol-1-yl)phenyl)-5-(hydroxymethyl)oxazolidin-2-one (M2 ). Amide hydrolysis at acetyl group of FYL-67 leading to the formation of M1 was observed and suggested to play a major role in both in vivo and in vitro phase I metabolism of FYL-67. M1 was demonstrated to undergo a further oxidation to form M2 . In addition, the results indicated no species difference existing between rats and humans. The outcomes of our research can be utilized for the development and validation of the analytical method for the quantification of FYL-67 as well as its metabolites in biological samples. Furthermore, it is helpful to conduct studies of pharmacodynamics and toxicodynamics. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Zitai Sang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital Sichuan University, and Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Haiyue Long
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital Sichuan University, and Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Tao Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital Sichuan University, and Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Weiwei Ye
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital Sichuan University, and Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Xiaoyan Yang
- Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Gong Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital Sichuan University, and Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Zhenling Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital Sichuan University, and Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Youfu Luo
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital Sichuan University, and Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
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