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Chuchueva N, Carta F, Nguyen HN, Luevano J, Lewis IA, Rios-Castillo I, Fanos V, King E, Swistushkin V, Reshetov I, Rusetsky Y, Shestakova K, Moskaleva N, Mariani C, Castillo-Carniglia A, Grapov D, Fahrmann J, La Frano MR, Puxeddu R, Appolonova SA, Brito A. Metabolomics of head and neck cancer in biofluids: an integrative systematic review. Metabolomics 2023; 19:77. [PMID: 37644353 DOI: 10.1007/s11306-023-02038-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 07/27/2023] [Indexed: 08/31/2023]
Abstract
INTRODUCTION Head and neck cancer (HNC) is the fifth most common cancer globally. Diagnosis at early stages are critical to reduce mortality and improve functional and esthetic outcomes associated with HNC. Metabolomics is a promising approach for discovery of biomarkers and metabolic pathways for risk assessment and early detection of HNC. OBJECTIVES To summarize and consolidate the available evidence on metabolomics and HNC in plasma/serum, saliva, and urine. METHODS A systematic search of experimental research was executed using PubMed and Web of Science. Available data on areas under the curve was extracted. Metabolic pathway enrichment analysis were performed to identify metabolic pathways altered in HNC. Fifty-four studies were eligible for data extraction (33 performed in plasma/serum, 15 in saliva and 6 in urine). RESULTS Metabolites with high discriminatory performance for detection of HNC included single metabolites and combination panels of several lysoPCs, pyroglutamate, glutamic acid, glucose, tartronic acid, arachidonic acid, norvaline, linoleic acid, propionate, acetone, acetate, choline, glutamate and others. The glucose-alanine cycle and the urea cycle were the most altered pathways in HNC, among other pathways (i.e. gluconeogenesis, glycine and serine metabolism, alanine metabolism, etc.). Specific metabolites that can potentially serve as complementary less- or non-invasive biomarkers, as well as metabolic pathways integrating the data from the available studies, are presented. CONCLUSION The present work highlights utility of metabolite-based biomarkers for risk assessment, early detection, and prognostication of HNC, as well as facilitates incorporation of available metabolomics studies into multi-omics data integration and big data analytics for personalized health.
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Affiliation(s)
- Natalia Chuchueva
- I.M. Sechenov First Moscow State Medical University, Moscow, Russia
- Central State Medical Academy, Moscow, Russia
| | - Filippo Carta
- Unit of Otorhinolaryngology, Department of Surgery, Azienda Ospedaliero-Universitaria Di Cagliari, University of Cagliari, Cagliari, Italy
| | - Hoang N Nguyen
- I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Jennifer Luevano
- Department of Food Science and Nutrition, California Polytechnic State University, San Luis Obispo, CA, USA
| | - Isaiah A Lewis
- Department of Food Science and Nutrition, California Polytechnic State University, San Luis Obispo, CA, USA
| | | | - Vassilios Fanos
- Department of Pediatrics and Clinical Medicine, Section of Neonatal Intensive Care Unit, Puericulture Institute and Neonatal Section, Azienda Ospedaliero-Universitaria Di Cagliari, Cagliari University, Cagliari, Italy
| | - Emma King
- Cancer Research Center, University of Southampton, Southampton, UK
- Department of Otolaryngology, Poole Hospital National Health Service Foundation Trust, Longfleet Road, Poole, UK
| | | | - Igor Reshetov
- I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Yury Rusetsky
- Central State Medical Academy, Moscow, Russia
- Otorhinolaryngological Surgical Department With a Group of Head and Neck Diseases, National Medical Research Center of Children's Health, Moscow, Russia
| | - Ksenia Shestakova
- Laboratory of Pharmacokinetics and Metabolomic Analysis, Institute of Translational Medicine and Biotechnology. I.M. Sechenov First, Moscow State Medical University, Moscow, Russia
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Natalia Moskaleva
- Laboratory of Pharmacokinetics and Metabolomic Analysis, Institute of Translational Medicine and Biotechnology. I.M. Sechenov First, Moscow State Medical University, Moscow, Russia
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Cinzia Mariani
- Unit of Otorhinolaryngology, Department of Surgery, Azienda Ospedaliero-Universitaria Di Cagliari, University of Cagliari, Cagliari, Italy
| | - Alvaro Castillo-Carniglia
- Society and Health Research Center, Facultad de Ciencias Sociales y Artes, Universidad Mayor, Santiago, Chile
- Millennium Nucleus for the Evaluation and Analysis of Drug Policies (nDP) and Millennium Nucleus on Sociomedicine (SocioMed), Santiago, Chile
| | | | | | - Michael R La Frano
- Department of Food Science and Nutrition, California Polytechnic State University, San Luis Obispo, CA, USA
- Cal Poly Metabolomics Service Center, California Polytechnic State University, San Luis Obispo, CA, USA
- Roy J.Carver Metabolomics Core Facility, University of Illinois, Urbana-Champaign, IL, USA
| | - Roberto Puxeddu
- King's College Hospital London, Dubai, United Arab Emirates
- Section of Otorhinolaryngology, Department of Surgery, University of Cagliari, Cagliari, Italy
| | - Svetlana A Appolonova
- Laboratory of Pharmacokinetics and Metabolomic Analysis, Institute of Translational Medicine and Biotechnology. I.M. Sechenov First, Moscow State Medical University, Moscow, Russia
- Russian Center of Forensic-Medical Expertise of Ministry of Health, Moscow, Russia
| | - Alex Brito
- Laboratory of Pharmacokinetics and Metabolomic Analysis, Institute of Translational Medicine and Biotechnology. I.M. Sechenov First, Moscow State Medical University, Moscow, Russia.
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", I.M. Sechenov First Moscow State Medical University, Moscow, Russia.
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Zhang MJ, Chou J, Sun ZW, Zhao JH, Guo J, Yu JY, Gao SQ, Tang YS, Liu LY. Gas chromatography/mass spectrometry analysis of organic acid profiles in human serum: A protocol of direct ultrasound-assisted derivatization. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2021; 35:e9149. [PMID: 34156734 DOI: 10.1002/rcm.9149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/17/2021] [Accepted: 06/19/2021] [Indexed: 06/13/2023]
Abstract
RATIONALE Low-molecular-weight organic acids that generally contain one to three carboxyl groups are involved in many important biological processes; therefore, it is important to develop a quantitative method for analyzing organic acids in serum in order to allow an evaluation of metabolic changes. In this study, we evaluated a protocol for detecting 26 organic acids in serum based on ultrasound-assisted derivatization by gas chromatography/mass spectrometry (GC/MS). METHODS Serum samples were prepared using ultrasound-assisted silane derivatization before GC/MS analysis to quantify concentrations of organic acids. Additionally, we investigated the variables affecting derivatization yields, including the extraction solvent, derivatization reagents, and derivatization conditions (reaction temperature, duration, and sonication parameters). The protocol was ultimately applied to detect organic acid profiles related to obesity. RESULTS We used acetone as the extraction solvent and determined suitable derivatization conditions, as follows: BSTFA + 1% TMCS, 50°C, 10 min, and 100% ultrasound power. The protocol showed satisfactory linearity (r = 0.9958-0.9996), a low limit of detection (0.04-0.42 μmol/L), good reproducibility (coefficient of variation (CV) %: 0.32-13.76%), acceptable accuracy (recovery: 82.97-114.96%), and good stability within 5 days (CV%: 1.35-12.01% at room temperature, 1.24-14.09% at 4°C, and 1.01-11.67% at -20°C). Moreover, the protocol was successfully applied to obtain the organic acid profiles from obese and healthy control subjects. CONCLUSIONS We identified and validated a protocol for ultrasound-assisted derivatization prior to GC/MS analysis for detecting 26 kinds of organic acids in serum. The results suggest the efficacy of this protocol for clinical applications to determine metabolic changes related to fluctuations in organic acid profiles.
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Affiliation(s)
- Ming-Jia Zhang
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Jing Chou
- PingHu Hospital, Health Science Center, Shenzhen University, Shenzhen, P.R. China
| | - Zhi-Wei Sun
- Harbin University of Commerce, Harbin, P.R. China
| | - Jin-Hui Zhao
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Jing Guo
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Jia-Ying Yu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Si-Qi Gao
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Ying-Shu Tang
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Li-Yan Liu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
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Asensio AF, Alvarez-González E, Rodríguez A, Sierra LM, Blanco-González E. Chromatographic methods coupled to mass spectrometry for the determination of oncometabolites in biological samples-A review. Anal Chim Acta 2021; 1177:338646. [PMID: 34482900 DOI: 10.1016/j.aca.2021.338646] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 11/29/2022]
Abstract
It is now well-established that dysregulation of the tricarboxylic acid (TCA) cycle enzymes succinate dehydrogenase, fumarate hydratase, and isocitrate dehydrogenase leads to the abnormal cellular accumulation of succinate, fumarate, and 2-hydroxyglutarate, respectively, which contribute to the formation and malignant progression of numerous types of cancers. Thus, these metabolites, called oncometabolites, could potentially be useful as tumour-specific biomarkers and as therapeutic targets. For this reason, the development of analytical methodologies for the accurate identification and determination of their levels in biological matrices is an important task in the field of cancer research. Currently, hyphenated gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS) techniques are the most powerful analytical tools in what concerns high sensitivity and selectivity to achieve such difficult task. In this review, we first provide a brief description of the biological formation of oncometabolites and their oncogenic properties, and then we present an overview and critical assessment of the GC-MS and LC-MS based analytical approaches that are reported in the literature for the determination of oncometabolites in biological samples, such as biofluids, cells, and tissues. Advantages and drawbacks of these approaches will be comparatively discussed. We believe that the present review represents the first attempt to summarize the applications of these hyphenated techniques in the context of oncometabolite analysis, which may be useful to new and existing researchers in this field.
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Affiliation(s)
- A Fernández Asensio
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, Institute of Sanitary Research of Asturias (ISPA), University of Oviedo. C/ Julian Clavería 8, 33006, Oviedo. Spain; Department of Functional Biology (Genetic Area), Oncology University Institute (IUOPA) and Institute of Sanitary Research of Asturias (ISPA), University of Oviedo. C/ Julian Clavería s/n, 33006, Oviedo. Spain
| | - E Alvarez-González
- Department of Functional Biology (Genetic Area), Oncology University Institute (IUOPA) and Institute of Sanitary Research of Asturias (ISPA), University of Oviedo. C/ Julian Clavería s/n, 33006, Oviedo. Spain
| | - A Rodríguez
- Department of Functional Biology (Genetic Area), Oncology University Institute (IUOPA) and Institute of Sanitary Research of Asturias (ISPA), University of Oviedo. C/ Julian Clavería s/n, 33006, Oviedo. Spain
| | - L M Sierra
- Department of Functional Biology (Genetic Area), Oncology University Institute (IUOPA) and Institute of Sanitary Research of Asturias (ISPA), University of Oviedo. C/ Julian Clavería s/n, 33006, Oviedo. Spain
| | - E Blanco-González
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, Institute of Sanitary Research of Asturias (ISPA), University of Oviedo. C/ Julian Clavería 8, 33006, Oviedo. Spain.
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Rathod R, Gajera B, Nazir K, Wallenius J, Velagapudi V. Simultaneous Measurement of Tricarboxylic Acid Cycle Intermediates in Different Biological Matrices Using Liquid Chromatography-Tandem Mass Spectrometry; Quantitation and Comparison of TCA Cycle Intermediates in Human Serum, Plasma, Kasumi-1 Cell and Murine Liver Tissue. Metabolites 2020; 10:metabo10030103. [PMID: 32178322 PMCID: PMC7143453 DOI: 10.3390/metabo10030103] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/27/2020] [Accepted: 03/10/2020] [Indexed: 01/02/2023] Open
Abstract
The tricarboxylic acid (TCA) cycle is a central part of carbon and energy metabolism, also connecting to glycolysis, amino acid, and lipid metabolism. The quantitation of the TCA cycle intermediate within one method is lucrative due to the interest in central carbon metabolism profiling in cells and tissues. In addition, TCA cycle intermediates in serum have been discovered to correspond as biomarkers to various underlying pathological conditions. In this work, an Liquid Chromatography-Mass Spectrometry/Mass Spectrometry-based quantification method is developed and validated, which takes advantage of fast, specific, sensitive, and cost-efficient precipitation extraction. Chromatographic separation is achieved while using Atlantis dC18 2.1 mm × 100 mm, particle size 3-μm of Waters column with a gradient elution mobile phase while using formic acid in water (0.1% v/v) and acetonitrile. Linearity was clearly seen over a calibration range of: 6.25 to 6400 ng/mL (r2 > 0.980) for malic acid; 11.72 to 12,000 ng/mL (r2 > 0.980) for cis-aconitic acid and L-aspartic acid; 29.30 to 30,000 ng/mL (r2 > 0.980) for isocitric acid, l-serine, and l-glutamic acid; 122.07 to 125,000 ng/mL (r2 > 0.980) for citric acid, glycine, oxo-glutaric acid, l-alanine, and l-glutamine; 527.34 to 540,000 ng/mL (r2 > 0.980) for l-lactic acid; 976.56 to 1,000,000 ng/mL (r2 > 0.980) for d-glucose; 23.44 to 24,000 ng/mL (r2 > 0.980) for fumaric acid and succinic acid; and, 244.14 to 250,000 ng/mL (r2 > 0.980) for pyruvic acid. Validation was carried out, as per European Medicines Agency (EMA) “guidelines on bioanalytical method validation”, for linearity, precision, accuracy, limit of detection (LOD), limit of quantification (LLOQ), recovery, matrix effect, and stability. The recoveries from serum and tissue were 79–119% and 77–223%, respectively. Using this method, we measured TCA intermediates in serum, plasma (NIST 1950 SRM), and in mouse liver samples. The concentration found in NIST SRM 1950 (n = 6) of glycine (246.4 µmol/L), l-alanine (302.4 µmol/L), and serine (92.9 µmol/L).
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Affiliation(s)
- Ramji Rathod
- Metabolomics Unit, Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Tukholmankatu 8, Biomedicum 2U, 00290 Helsinki, Finland; (R.R.); (B.G.); (K.N.); (J.W.)
| | - Bharat Gajera
- Metabolomics Unit, Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Tukholmankatu 8, Biomedicum 2U, 00290 Helsinki, Finland; (R.R.); (B.G.); (K.N.); (J.W.)
| | - Kenneth Nazir
- Metabolomics Unit, Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Tukholmankatu 8, Biomedicum 2U, 00290 Helsinki, Finland; (R.R.); (B.G.); (K.N.); (J.W.)
| | - Janne Wallenius
- Metabolomics Unit, Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Tukholmankatu 8, Biomedicum 2U, 00290 Helsinki, Finland; (R.R.); (B.G.); (K.N.); (J.W.)
- Fungal Genetics and Biotechnology, Department of Microbiology, University of Helsinki, Biocenter 1, Viikinkaari 9, 00790 Helsinki, Finland
| | - Vidya Velagapudi
- Metabolomics Unit, Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Tukholmankatu 8, Biomedicum 2U, 00290 Helsinki, Finland; (R.R.); (B.G.); (K.N.); (J.W.)
- Correspondence: ; Tel.: +358-50-317-5087
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Cao YY, Peng LL, Jiang L, Thakur K, Hu F, Tang SM, Wei ZJ. Evaluation of the Metabolic Effects of Hydrogen Sulfide on the Development of Bombyx mori (Lepidoptera: Bombycidae), Using Liquid Chromatography-Mass Spectrometry-Based Metabolomics. JOURNAL OF INSECT SCIENCE (ONLINE) 2020; 20:5805372. [PMID: 32186739 PMCID: PMC7071785 DOI: 10.1093/jisesa/ieaa008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Indexed: 05/10/2023]
Abstract
Hydrogen sulfide (H2S) is a highly poisonous gas with an unpleasant smell of rotten eggs. Previous studies of H2S have primarily focused on its effects on mammalian nervous and respiratory systems. In this study, silkworm developmental parameters and changes in metabolites in response to H2S exposure were investigated using a hemolymph metabolomic approach, based on liquid chromatography-mass spectrometry (LC-MS). The developmental parameters, body weight, cocoon weight, cocoon shell weight, and cocoon shell ratio, were noticeably increased following H2S exposure, with the greatest effects observed at 7.5-μM H2S. Metabolites upregulated under H2S exposure (7.5 μM) were related to inflammation, and included (6Z, 9Z, 12Z)-octadecatrienoic acid, choline phosphate, and malic acid, while hexadecanoic acid was downregulated. Identified metabolites were involved in biological processes, including pyrimidine, purine, and fatty acid metabolism, which are likely to affect silk gland function. These results demonstrate that H2S is beneficial to silkworm development and alters metabolic pathways related to spinning function and inflammation. The present study provides new information regarding the potential functions of H2S in insects and metabolic pathways related to this phenomenon.
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Affiliation(s)
- Yu-Yao Cao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, PR China
| | - Li-Li Peng
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, PR China
| | - Li Jiang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, PR China
| | - Kiran Thakur
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, PR China
| | - Fei Hu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, PR China
| | - Shun-Ming Tang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, PR China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, PR China
| | - Zhao-Jun Wei
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, PR China
- Corresponding author, e-mail:
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Chou J, Liu R, Yu J, Liu X, Zhao X, Li Y, Liu L, Sun C. Fasting serum α‑hydroxybutyrate and pyroglutamic acid as important metabolites for detecting isolated post-challenge diabetes based on organic acid profiles. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1100-1101:6-16. [PMID: 30267980 DOI: 10.1016/j.jchromb.2018.09.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/20/2018] [Accepted: 09/02/2018] [Indexed: 01/01/2023]
Abstract
The aim of this study was to develop a method to detect serum organic acid profiles in patients with isolated post-challenge diabetes (IPD) and to compare the metabolites between IPD patients, type 2 diabetes mellitus (T2DM) and healthy controls. We developed a gas chromatography-mass spectrometry method to detect serum organic acids and validated it using serum from 40 patients with IPD, 47 with newly diagnosed T2DM, and 48 healthy controls. We then analyzed the organic acid profiles by multivariate analysis to identify potential metabolites. This method allowed the fast and accurate measurement of 27 organic acids in serum. Serum organic acid profiles differed significantly among IPD patients, T2DM patients, and healthy controls. IPD samples had significantly higher concentrations of α‑hydroxybutyrate and β‑hydroxybutyrate (P < 0.05) and lower pyroglutamic acid concentration (P < 0.05) compared with the healthy controls, and the area under the curve for the combination of α‑hydroxybutyrate and pyroglutamic acid was 0.863 for the IPD group. These results provide useful information regarding the changes in organic acid metabolism associated with IPD. Measurement of these metabolites in fasting serum from IPD patients may provide useful diagnostic and/or prognostic biomarkers, as well as helpful markers for the therapeutic monitoring of IPD patients.
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Affiliation(s)
- Jing Chou
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - Rui Liu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - Jiaying Yu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - Xiaowei Liu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - Xinshu Zhao
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - Ying Li
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
| | - Liyan Liu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China.
| | - Changhao Sun
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, PR China
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Fernández-Galán E, Massana N, Parra-Robert M, Hidalgo S, Casals G, Esteve J, Jiménez W. Validation of a routine gas chromatography mass spectrometry method for 2-hydroxyglutarate quantification in human serum as a screening tool for detection of idh mutations. J Chromatogr B Analyt Technol Biomed Life Sci 2018. [PMID: 29522955 DOI: 10.1016/j.jchromb.2018.02.038] [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] [Indexed: 01/27/2023]
Abstract
High circulating levels of 2-hydroxyglutarate (2HG) have been reported in patients with determinate isocitrate dehydrogenase (IDH) mutated tumors. Recent studies indicate that in malignancies such as acute myeloid leukemia (AML), measurements of 2HG in serum provide useful diagnostic and prognostic information and improve patient selection and monitoring of IDH-targeted treatments. In the current study, we validated a sensitive and specific gas chromatography mass spectrometry (GC-MS) method specifically intended to quantify serum levels of 2HG in routine clinical laboratories. Extraction was liquid-liquid with ethyl acetate, and derivatization was reduced to 3 min of microwave irradiation. The analytical method was linear over a wide dynamic range, presenting acceptable intraday and day-to-day precision and accuracy. The limit of quantification was 10 ng/mL, process efficiency ranged between 38% and 49%, and recovery of added 2HG was 99-105%. 2HG was found to be stable in serum for up to 48 h at both 4 °C and at ambient temperature, and after three freeze-thaw cycles. Microwave derivatizated extracts in the autosampler were found to be stable for up to 120 h. In summary, the present method is useful for quantification of 2HG serum levels in patients with IDH mutated malignancies in clinical laboratories.
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Affiliation(s)
- Esther Fernández-Galán
- Department of Biochemistry and Molecular Genetics, CDB, Hospital Clinic Universitari, c/ Villarroel 170, 08036 Barcelona, Spain
| | - Núria Massana
- Department of Biochemistry and Molecular Genetics, CDB, Hospital Clinic Universitari, c/ Villarroel 170, 08036 Barcelona, Spain
| | - Marina Parra-Robert
- Department of Biochemistry and Molecular Genetics, CDB, Hospital Clinic Universitari, c/ Villarroel 170, 08036 Barcelona, Spain
| | - Susana Hidalgo
- Department of Biochemistry and Molecular Genetics, CDB, Hospital Clinic Universitari, c/ Villarroel 170, 08036 Barcelona, Spain
| | - Gregori Casals
- Department of Biochemistry and Molecular Genetics, CDB, Hospital Clinic Universitari, c/ Villarroel 170, 08036 Barcelona, Spain; IDIBAPS, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas CIBERehd, Spain.
| | - Jordi Esteve
- Department of Hematology, Hospital Clínic Universitari, IDIBAPS, Josep Carreras Leukaemia Reseaerch Institute, c/ Villarroel 170, 08036 Barcelona, Spain
| | - Wladimiro Jiménez
- Department of Biochemistry and Molecular Genetics, CDB, Hospital Clinic Universitari, c/ Villarroel 170, 08036 Barcelona, Spain; IDIBAPS, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas CIBERehd, Spain; Department Biomedicina, University of Barcelona, Barcelona, Spain
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