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Floros DJ, Xu K, Berthiller F, Schwartz-Zimmermann H. Comparison of chromatographic conditions for the targeted tandem mass spectrometric determination of 354 mammalian metabolites. J Chromatogr A 2023; 1697:463985. [PMID: 37062154 DOI: 10.1016/j.chroma.2023.463985] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/22/2023] [Accepted: 04/08/2023] [Indexed: 04/18/2023]
Abstract
Metabolomics is becoming increasingly popular in livestock research, but no single analytical method can cover the entire metabolome. As such, we compared similar and complementary chromatographic methods with respect to analyte coverage and chromatographic properties of mammalian metabolites. We investigated 354 biologically relevant primary metabolites from 19 compound classes including amino acids, bile acids, biogenic amines, carboxylic acids, lipids, nucleotides and sugars. A total of 2063 selected reaction monitoring transitions were optimized on a triple quadrupole mass spectrometer. We then determined the retention profiles and peak parameters of our compounds using an anion exchange chromatography (AIC), three reversed-phase (RP) and three hydrophilic interaction liquid chromatography (HILIC) methods. On average, HILIC methods covered 54% of all metabolites with retention factors >1, while average RP coverage was 41%. In contrast to RP, HILIC methods could also retain polar metabolites such as amino acids and biogenic amines. Carboxylic acids, nucleotides, and sugar related compounds were best separated by AIC or zwitterionic pHILIC with alkaline eluents. Combining two complementary HILIC and RP methods increased the library coverage to 92%. By further including important short chain fatty acids, a combination of HILIC, RP and AIC methods achieved a coverage of 97%. The resulting dataset of LC and MS/MS parameters will facilitate the development of tailor-made quantitative targeted LC-MS/MS methods to investigate the mammalian metabolome.
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Affiliation(s)
- Dimitrios J Floros
- Christian Doppler Laboratory for Innovative Gut Health Concepts of Livestock, Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Kangkang Xu
- Christian Doppler Laboratory for Innovative Gut Health Concepts of Livestock, Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Franz Berthiller
- Christian Doppler Laboratory for Innovative Gut Health Concepts of Livestock, Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Str. 20, 3430 Tulln, Austria.
| | - Heidi Schwartz-Zimmermann
- Christian Doppler Laboratory for Innovative Gut Health Concepts of Livestock, Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
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2
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Zhang M, Song G, Zhu Q, Zhao Q, Zhang X, Hu X, Feng J, Wang P, Shen Q, Wang H. Compositional study of plasmalogens in clam (Corbicula fluminea) by TiO2/KCC-1 extraction, enzymatic purification, and lipidomics analysis. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2021.103966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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3
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Wang J, Liao J, Wang H, Zhu X, Li L, Lu W, Song G, Shen Q. Quantitative and comparative study of plasmalogen molecular species in six edible shellfishes by hydrophilic interaction chromatography mass spectrometry. Food Chem 2020; 334:127558. [PMID: 32711269 DOI: 10.1016/j.foodchem.2020.127558] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 06/25/2020] [Accepted: 07/09/2020] [Indexed: 12/29/2022]
Abstract
Shellfishes contain plasmalogens correlating to the functions of brain, heart, etc. Herein, a mild acid hydrolysis and hydrophilic interaction chromatography (HILIC) tandem mass spectrometry method was developed for analyzing plasmalogens in six shellfish species. A total of 19 plasmalogen molecular species were successfully identified, including nine phosphatidylcholine plasmalogen (plasPC), seven phosphatidylethanolamine plasmalogen (plasPE), and three phosphatidylserine plasmalogen (plasPS). The quantitative results indicated that mussel (32 μg·mg-1) possessed the highest content of plasmalogens, followed by oyster (21 μg·mg-1) and razor clam (15 μg·mg-1). The statistic models showed that the plasPE P-18:0/20:5 (m/z 748), plasPE P-16:0/22:2 & P-18:0/20:2 (m/z 754) and plasPS were the most contributing difference between shellfishes. The results indicated that this method was sensitive and precise to determine plasmalogens in shellfish, and mussel was demonstrated to be a good choice for the large-scale preparation of plasmalogens.
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Affiliation(s)
- Jie Wang
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Jie Liao
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China; Zhejiang Huacai Testing Technology Co., Ltd., Shaoxing, China
| | - Honghai Wang
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Xiaofang Zhu
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Linqiu Li
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Weibo Lu
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Gongshuai Song
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Qing Shen
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China.
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Rastegar L, Mighani H, Ghassempour A. A comparison and column selection of Hydrophilic Interaction Liquid Chromatography and Reversed-Phase High-Performance Liquid Chromatography for detection of DNA methylation. Anal Biochem 2018; 557:123-130. [PMID: 30030996 DOI: 10.1016/j.ab.2018.07.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 07/11/2018] [Accepted: 07/16/2018] [Indexed: 01/08/2023]
Abstract
5-methylcytosine (5mC) is an epigenetic mark which has a profound effect on various fundamental processes in cells. In present study, at first Hydrophilic Interaction Liquid Chromatography (HILIC) was compared with Reversed-Phase High-Performance Liquid Chromatography (RP-HPLC) based on their selectivity (α), retention factor (k), and resolution (R) for cytosine (C) and 5mC nucleobases. We tried to justify the separation mechanism on the basis of mobile phase and solute polarity, structural characterization of solute and stationary phases, log Do/w, and pka under both modes. Then, these two modes were compared in order to select the best column for measurement of methylation level in two real samples with less analytical complexity (i.e. animal and bacteria) and a highly complex sample (i.e. plant), after chemical hydrolysis of DNA. In this favor, diol and cyano (CN) columns in HILIC mode as well as C8 and C18 in RP-HPLC were investigated. Optimum separation and the best validation parameters were obtained for CN column with Limit of Detection (LOD) of 1.4 pmol and Limit of Quantification (LOQ) of 4.8 pmol for 5mC. When the CN column was used in HILIC-UV procedure, separation of 5mC and C bases was achieved in all types of hydrolyzed DNA solutions.
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Affiliation(s)
- Leila Rastegar
- Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran
| | - Hossein Mighani
- Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran
| | - Alireza Ghassempour
- Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G.C. Evin, Tehran, Iran.
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5
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Mechanistic study for the simultaneous determination of metformin and teneligliptin in human plasma using hydrophilic interaction liquid chromatography–MS/MS. Bioanalysis 2018; 10:475-488. [DOI: 10.4155/bio-2018-0007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Aim: A simple, selective and sensitive hydrophilic interaction liquid chromatography-MS/MS method is developed for the simultaneous determination of metformin (MET) and teneligliptin (TEN) in human plasma using deuterated internal standards. The mechanism of retention of analytes was studied by varying the proportion of organic diluent, buffer strength, pH of the mobile phase and temperature. Results: The results showed a mixed-mode mechanism comprising of hydrophilic (partition) and electrostatic interaction (ion exchange) for MET and essentially hydrophilic for TEN. The linear calibration curves were established in the concentration range of 1.0–1000 ng/ml for MET and 0.50–750 ng/ml for TEN. Conclusion: The method was applied to determine plasma concentration of MET and TEN in healthy subjects.
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Kokotou MG, Thomaidis NS. Characterization of the Retention of Artificial Sweeteners by Hydrophilic Interaction Liquid Chromatography. ANAL LETT 2017. [DOI: 10.1080/00032719.2017.1326124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Maroula G. Kokotou
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Nikolaos S. Thomaidis
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
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Jandera P, Janás P, Škeříková V, Urban J. Effect of water on the retention on diol and amide columns in hydrophilic interaction liquid chromatography. J Sep Sci 2017; 40:1434-1448. [DOI: 10.1002/jssc.201601044] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 01/10/2017] [Accepted: 01/11/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Pavel Jandera
- Department of Analytical Chemistry, Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
| | - Petr Janás
- Department of Analytical Chemistry, Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
| | - Veronika Škeříková
- Department of Analytical Chemistry, Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
| | - Jiří Urban
- Department of Analytical Chemistry, Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
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8
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Gaston KW, Limbach PA. The identification and characterization of non-coding and coding RNAs and their modified nucleosides by mass spectrometry. RNA Biol 2015; 11:1568-85. [PMID: 25616408 PMCID: PMC4615682 DOI: 10.4161/15476286.2014.992280] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The analysis of ribonucleic acids (RNA) by mass spectrometry has been a valuable analytical approach for more than 25 years. In fact, mass spectrometry has become a method of choice for the analysis of modified nucleosides from RNA isolated out of biological samples. This review summarizes recent progress that has been made in both nucleoside and oligonucleotide mass spectral analysis. Applications of mass spectrometry in the identification, characterization and quantification of modified nucleosides are discussed. At the oligonucleotide level, advances in modern mass spectrometry approaches combined with the standard RNA modification mapping protocol enable the characterization of RNAs of varying lengths ranging from low molecular weight short interfering RNAs (siRNAs) to the extremely large 23 S rRNAs. New variations and improvements to this protocol are reviewed, including top-down strategies, as these developments now enable qualitative and quantitative measurements of RNA modification patterns in a variety of biological systems.
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Affiliation(s)
- Kirk W Gaston
- a Rieveschl Laboratories for Mass Spectrometry; Department of Chemistry ; University of Cincinnati ; Cincinnati , OH USA
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9
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Hydrophilic interaction chromatography coupled to tandem mass spectrometry in the presence of hydrophilic ion-pairing reagents for the separation of nucleosides and nucleotide mono-, di- and triphosphates. J Chromatogr A 2015; 1414:129-37. [PMID: 26341591 DOI: 10.1016/j.chroma.2015.08.040] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/14/2015] [Accepted: 08/20/2015] [Indexed: 11/23/2022]
Abstract
A fast and efficient method for the simultaneous separation of highly polar compounds, in this case nucleosides and nucleotide mono-, di- and triphosphates, using hydrophilic interaction chromatography coupled with tandem mass spectrometry (HILIC-MS/MS) is proposed. This new separation method revealed the possibilities of the formation of hydrophilic ion-pairing compounds. Three stationary phases (HILIC XBridge-Amide, HILIC-CoreShell and ZIC-HILIC) were assayed for the separation of 20 target analytes, and a detailed study of the composition of the mobile phase was made using different salts at different concentrations in a organic-rich mobile phase. We report that in order to prevent the adsorption of nucleotides on the LC-MS setup and to enhance their retention on the HILIC stationary phase, a mobile phase containing hexafluoro-2-propanol and different cations should be used. Four cations were evaluated: ammonium, diethylammonium, triethylammonium and tetrabutylammonium. The results revealed the formation of an ionic-association compound between the phosphorylated analytes and the cationic ion-pairing reagents, whose retention increased with the polarity of the cationic ion-pairing reagent. HILIC XBridge-Amide was found to be the most suitable column for the separation of these analytes, and the optimized mobile phase consisted of an ACN/UHQ water mixture (3min of isocratic elution using 82:18%, v/v and then a fast gradient from 18% to 22% of water) with 100mM hexafluoro-2-propanol and 50mM diethylamine (w(w)pH 9-w(s)pH 10). In a total analysis time of 8min, good results were achieved in terms of resolution. Under these optimum conditions, a further comprehensive study of the retention mechanism was carried out.
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Brewer AJ, Lunte C. Analysis of Nucleosides in Municipal Wastewater by Large-Volume Liquid Chromatography Tandem Mass Spectrometry. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2015; 7:5504-5510. [PMID: 26322136 PMCID: PMC4551110 DOI: 10.1039/c5ay00929d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Nucleosides are components of both DNA and RNA, and contain either a ribose (RNA) or 2deoxyribose (DNA) sugar and a purine or pyrimidine base. In addition to DNA and RNA turnover, modified nucleosides found in urine have been correlated to a diminished health status associated with AIDS, cancers, oxidative stress and age. Nucleosides found in municipal wastewater influent are potentially useful markers of community health status, and as of now, remain uninvestigated. A method was developed to quantify nucleosides in municipal wastewater using large-volume injection, liquid chromatography, and mass spectrometry. Method accuracy ranged from 92 to 139% when quantified by using isotopically labeled internal standards. Precision ranged from 6.1 to 19% of the relative standard deviation. The method's utility was demonstrated by the analysis of twenty-four hour composite wastewater influent samples that were collected over a week to investigate community nucleoside excretion. Nucleosides originating from RNA were more abundant that DNA over the study period, with total loads of nucleosides ranging from 2 to 25 kg/day. Given this relatively high amount of nucleosides found over the study period they present an attractive analyte for the investigation of community health.
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Affiliation(s)
- Alex J. Brewer
- Department of Chemistry, University of Kansas, Lawrence, KS. 2030 Becker Drive Room 220, Lawrence, KS 66045
| | - Craig Lunte
- Department of Chemistry, University of Kansas, Lawrence, KS. 2030 Becker Drive Room 220, Lawrence, KS 66045
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11
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Wang H, Wu Q, Wu C, Jiang Z. Simultaneous Determination of 16 Nucleosides and Nucleobases inEuryale feroxSalisb. by Liquid Chromatography Coupled with Electro Spray Ionization Tandem Triple Quadrupole Mass Spectrometry (HPLC-ESI-TQ-MS/MS) in Multiple Reaction Monitoring (MRM) Mode. J Chromatogr Sci 2015; 53:1386-94. [DOI: 10.1093/chromsci/bmv030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Indexed: 11/14/2022]
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12
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Dudley E, Bond L. Mass spectrometry analysis of nucleosides and nucleotides. MASS SPECTROMETRY REVIEWS 2014; 33:302-31. [PMID: 24285362 DOI: 10.1002/mas.21388] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 05/03/2013] [Accepted: 05/03/2013] [Indexed: 05/12/2023]
Abstract
Mass spectrometry has been widely utilised in the study of nucleobases, nucleosides and nucleotides as components of nucleic acids and as bioactive metabolites in their own right. In this review, the application of mass spectrometry to such analysis is overviewed in relation to various aspects regarding the analytical mass spectrometric and chromatographic techniques applied and also the various applications of such analysis.
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Affiliation(s)
- Ed Dudley
- Institute of Mass Spectrometry, College of Medicine, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
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13
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Li Y, Yang J, Jin J, Sun X, Wang L, Chen J. New reversed-phase/anion-exchange/hydrophilic interaction mixed-mode stationary phase based on dendritic polymer-modified porous silica. J Chromatogr A 2014; 1337:133-9. [DOI: 10.1016/j.chroma.2014.02.044] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 02/14/2014] [Accepted: 02/17/2014] [Indexed: 11/17/2022]
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14
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Sentkowska A, Biesaga M, Pyrzynska K. Effects of the operation parameters on HILIC separation of flavonoids on zwitterionic column. Talanta 2013; 115:284-90. [DOI: 10.1016/j.talanta.2013.05.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 04/30/2013] [Accepted: 05/04/2013] [Indexed: 11/24/2022]
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15
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García-Gómez D, Rodríguez-Gonzalo E, Carabias-Martínez R. Stationary phases for separation of nucleosides and nucleotides by hydrophilic interaction liquid chromatography. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2013.02.011] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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16
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Bittová M, Havliš J, Fuksová H, Vrbková B, Trnková L. Toward reading the sequence of short oligonucleotides from their retention factors obtained by means of hydrophilic interaction chromatography and ion-interaction reversed-phase liquid chromatography. J Sep Sci 2013; 35:3227-34. [PMID: 23175142 DOI: 10.1002/jssc.201200482] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 08/17/2012] [Accepted: 08/17/2012] [Indexed: 11/08/2022]
Abstract
Retention characteristics of selected synthetic 5'-terminal phosphate absent penta-nucleotides containing adenine, guanine, and thymine were studied in relation to their sequence by hydrophilic interaction chromatography and ion-interaction reversed-phase liquid chromatography. The organic solvent content, pH, and buffer concentration in mobile phases were evaluated as influential separation conditions. Data demonstrate that both compared chromatographic modes can be used to separate synthetic penta-nucleotides according to their nucleotide composition. Moreover, reversed-phase liquid chromatography allows separation according to their sequence. We have found a simple linear additive model to describe the retention order in both separation modes in regard to their sequence. In hydrophilic interaction chromatography, the retention behavior is controlled primarily by the hydrophilicity of involved nucleotides and minimally by their sequence position. For reversed-phase liquid chromatography, the nucleotide hydrophobicity plays an important role in their retention properties and the influence of their location in sequence on the retention increases toward the center and decreases toward the termini. Our results show that the penta-nucleotide sequence, and thus its spatial arrangement induced by the surrounding environment, is highly related to the retention properties, so it may be hypothetically used to read the sequence from the retention properties acquired under particular separation conditions.
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Affiliation(s)
- Miroslava Bittová
- Faculty of Science, Department of Chemistry, Masaryk University, Brno, Czech Republic
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17
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Qiao L, Dou A, Shi X, Li H, Shan Y, Lu X, Xu G. Development and evaluation of new imidazolium-based zwitterionic stationary phases for hydrophilic interaction chromatography. J Chromatogr A 2013; 1286:137-45. [DOI: 10.1016/j.chroma.2013.02.066] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 02/14/2013] [Accepted: 02/21/2013] [Indexed: 10/27/2022]
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Greco G, Letzel T. Main Interactions and Influences of the Chromatographic Parameters in HILIC Separations. J Chromatogr Sci 2013; 51:684-93. [DOI: 10.1093/chromsci/bmt015] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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19
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Marrubini G, Fattorini P, Previderé C, Goi S, Sorçaburu Cigliero S, Grignani P, Serra M, Biesuz R, Massolini G. Experimental design applied to the optimization of microwave-assisted DNA hydrolysis. J Chromatogr A 2012; 1249:8-16. [PMID: 22749458 DOI: 10.1016/j.chroma.2012.06.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 06/05/2012] [Accepted: 06/07/2012] [Indexed: 10/28/2022]
Abstract
The assessment of the integrity of the DNA primary structure and the identification of canonical and modified bases are useful tools in medical, pharmaceutical, and forensic applications. In this article we report on the first microwave-assisted hydrolyses of deoxyribonucleoside-triphosphates (dNTPs) and human DNA using "Design of Experiments" methodology. We use hydrophilic interaction chromatography (HILIC) and UV detection at 260 nm for the determination of purinic and pyrimidinic bases at levels of 0.5 μM. We use a ZIC-HILIC 150mm × 2.1 mm i.d., 5 μm particle size column and ammonium formate buffers in acetonitrile for gradient separation of the analytes. We then compare the final concentrations of Thymine, Adenine, Cytosine, and Guanine with the nominal amounts of such bases in the dNTPs and DNA submitted to hydrolysis. After optimization of the hydrolysis (11.5 min, 0.15 M aqueous HCl, 150 °C), the method turns out to be suitable for the determination of products released from quantities of human DNA as low as 500 ng with precision (RSD<10%) and accuracy (REC 97-104%). These results confirm that the kinetics of the release of the bases depends on their molecular structure and show that the concentration of the substrate plays a relevant role. We conclude with a discussion of the method and a comparison to the methods described in previous studies.
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Affiliation(s)
- Giorgio Marrubini
- Department of Drug Sciences, University of Pavia, viale Taramelli 12, 27100 Pavia, Italy.
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Chen Y, Bicker W, Wu J, Xie M, Lindner W. Simultaneous determination of 16 nucleosides and nucleobases by hydrophilic interaction chromatography and its application to the quality evaluation of Ganoderma. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:4243-4252. [PMID: 22500559 DOI: 10.1021/jf300076j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In order to develop a simple, efficient, and sensitive method for comprehensive analysis of the nucleosides and nucleobases in natural products, a zwitterionic hydrophilic interaction chromatography (ZIC-HILIC) method for the simultaneous determination of 16 nucleosides and nucleobases has been studied. A mechanistic study confirmed that ZIC-HILIC separation showed a mixed-mode effect of both hydrophilic and electrostatic interactions. This method was validated to be precise, accurate, and sensitive with overall precision (intra- and interday) less than 1.8% (RSD), and LOD and LOQ was in the range of 0.005-0.029 μg/mL and 0.018-0.096 μg/mL, respectively. With this method, the nucleosides and nucleobases in Ganoderma of different species (G. atrum, G. lucidum, and G. sinense) and origins were quantified. The results showed that the contents varied with the species and origins. With the aid of hierarchical cluster analysis (HCA), cultivated Ganoderma from different origins and species were successfully discriminated. It is for the first time that the content of nucleosides and nucleobases in G. atrum is reported and compared. Our data showed that HILIC had advantages as a useful and potential tool for the study of the bioactive components in Ganoderma as well as their quality control, and could therefore be used for the determination of the analytes in other natural products.
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Affiliation(s)
- Yi Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. of China
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Greco G, Grosse S, Letzel T. Study of the retention behavior in zwitterionic hydrophilic interaction chromatography of isomeric hydroxy- and aminobenzoic acids. J Chromatogr A 2012; 1235:60-7. [DOI: 10.1016/j.chroma.2012.02.031] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 02/06/2012] [Accepted: 02/13/2012] [Indexed: 11/24/2022]
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22
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García-Gómez D, Rodríguez-Gonzalo E, Carabias-Martínez R. Evaluation of the Electrostatic Contribution to the Retention of Modified Nucleosides and Nucleobases by Zwitterionic Hydrophilic Interaction Chromatography. ACTA ACUST UNITED AC 2012. [DOI: 10.5402/2012/308062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This work explores the benefits and limitations, on a quantitative basis, of using zwitterionic hydrophilic interaction chromatography (ZIC-HILIC) for the separation of several modified nucleosides and nucleobases of clinical interest. The target compounds were hydroxylated and methylated derivatives: 8-hydroxy-guanine, 8-hydroxy-guanosine, 8-hydroxy-2′-deoxyguanosine, 1-methyl-guanine, 7-methyl-guanine, and 9-methyl-guanine. A quantitative evaluation of the electrostatic interaction based on a systematic study of the nature and concentration of the salts in the mobile phase has been carried out. From the obtained results, it may be concluded that separation is based on a mechanism of partition and interaction through weak electrostatic forces: the contribution of the electrostatic interaction to the retention of the charged analytes reaching values between 25 and 52% at low salt concentration. However, the electrostatic contribution decreased progressively as the salt concentration rose.
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Affiliation(s)
- Diego García-Gómez
- Departamento de Química Analítica, Nutrición y Bromatología, Universidad de Salamanca, 37008 Salamanca, Spain
| | | | - Rita Carabias-Martínez
- Departamento de Química Analítica, Nutrición y Bromatología, Universidad de Salamanca, 37008 Salamanca, Spain
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Development and validation of a hydrophilic interaction chromatography-tandem mass spectrometry method with on-line polar extraction for the analysis of urinary nucleosides. Potential application in clinical diagnosis. J Chromatogr A 2011; 1218:9055-63. [PMID: 22056237 DOI: 10.1016/j.chroma.2011.10.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 09/22/2011] [Accepted: 10/05/2011] [Indexed: 10/16/2022]
Abstract
The present paper describes the development, validation and application of a quantitative method for the determination of endogenous nucleosides and nucleobases in urine based on the on-line coupling of a solid-phase extraction step with hydrophilic interaction chromatography-tandem mass spectrometry. The method combines the use of a highly polar restricted-access material (RAM), based on an N-vinylacetamide copolymer, for efficient analyte extraction and matrix removal, with separation by zwitterionic hydrophilic interaction chromatography (ZIC-HILIC), that revealed a satisfactory retention of the polar analytes studied. Detection using a triple quadrupole analyser allowed reliable identification and high-sensitivity quantitation of the target compounds. The on-line configuration developed, RAM-ZIC-HILIC-MS/MS, provides a convenient approach to automate the application to urine analysis, with minimum sample manipulation. The whole method was validated according to European Legislation for bioanalytical methods. The validation steps included the verification of matrix effects, calibration curve, precision, accuracy, selectivity, stability and carry-over in real samples. The results of the validation process revealed that the proposed method is suitable for the reliable determination of nucleosides and nucleobases in human urine, showing limits of detection from 0.1 to 1.3 ng mL(-1). The application to clinical samples was also checked; the results obtained in analyses of urine samples from healthy volunteers and cancer patients using Principal Component Analysis, Hierarchical Cluster Analysis and Soft Independent Modeling of Class Analogy are also shown.
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