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Febra C, Saraiva J, Vaz F, Macedo J, Al-Hroub HM, Semreen MH, Maio R, Gil V, Soares N, Penque D. Acute venous thromboembolism plasma and red blood cell metabolomic profiling reveals potential new early diagnostic biomarkers: observational clinical study. J Transl Med 2024; 22:200. [PMID: 38402378 PMCID: PMC10894498 DOI: 10.1186/s12967-024-04883-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 01/10/2024] [Indexed: 02/26/2024] Open
Abstract
BACKGROUND Venous thromboembolism (VTE) is a leading cause of cardiovascular mortality. The diagnosis of acute VTE is based on complex imaging exams due to the lack of biomarkers. Recent multi-omics based research has contributed to the development of novel biomarkers in cardiovascular diseases. Our aim was to determine whether patients with acute VTE have differences in the metabolomic profile compared to non-acute VTE. METHODS This observational trial included 62 patients with clinical suspicion of acute deep vein thrombosis or pulmonary embolism, admitted to the emergency room. There were 50 patients diagnosed with acute VTE and 12 with non-acute VTE conditions and no significant differences were found between the two groups for clinical and demographic characteristics. Metabolomics assays identified and quantified a final number of 91 metabolites in plasma and 55 metabolites in red blood cells (RBCs). Plasma from acute VTE patients expressed tendency to a specific metabolomic signature, with univariate analyses revealing 23 significantly different molecules between acute VTE patients and controls (p < 0.05). The most relevant metabolic pathway with the strongest impact on the acute VTE phenotype was D-glutamine and D-glutamate (p = 0.001, false discovery rate = 0.06). RBCs revealed a specific metabolomic signature in patients with a confirmed diagnosis of DVT or PE that distinguished them from other acutely diseased patients, represented by 20 significantly higher metabolites and four lower metabolites. Three of those metabolites revealed high performant ROC curves, including adenosine 3',5'-diphosphate (AUC 0.983), glutathione (AUC 0.923), and adenine (AUC 0.91). Overall, the metabolic pathway most impacting to the differences observed in the RBCs was the purine metabolism (p = 0.000354, false discovery rate = 0.68). CONCLUSIONS Our findings show that metabolite differences exist between acute VTE and nonacute VTE patients admitted to the ER in the early phases. Three potential biomarkers obtained from RBCs showed high performance for acute VTE diagnosis. Further studies should investigate accessible laboratory methods for the future daily practice usefulness of these metabolites for the early diagnosis of acute VTE in the ER.
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Affiliation(s)
- Cláudia Febra
- Department of Intensive Care, Hospital da Luz Lisboa, Lisbon, Portugal.
- Faculty of Medicine, University of Porto, Porto, Portugal.
- Human Genetics Department, Instituto Nacional de Saúde Dr. Ricardo Jorge (INSA), Lisbon, Portugal.
| | - Joana Saraiva
- Human Genetics Department, Instituto Nacional de Saúde Dr. Ricardo Jorge (INSA), Lisbon, Portugal
- Center for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School-FCM, UNL, Lisbon, Portugal
- NOVA School of Science and Technology, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Fátima Vaz
- Human Genetics Department, Instituto Nacional de Saúde Dr. Ricardo Jorge (INSA), Lisbon, Portugal
- Center for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School-FCM, UNL, Lisbon, Portugal
| | - João Macedo
- NOVA School of Science and Technology, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Hamza Mohammad Al-Hroub
- Department of Medical Chemistry, College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates
| | - Mohammad Harb Semreen
- Department of Medical Chemistry, College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates
| | - Rui Maio
- Department of General Surgery, Hospital da Luz Lisboa, Lisbon, Portugal
| | - Vitor Gil
- Faculty of Medicine, University of Porto, Porto, Portugal
- Center of Cardiovascular Risk and Thrombosis, Hospital da Luz Torres de Lisboa, Lisbon, Portugal
| | - Nelson Soares
- Human Genetics Department, Instituto Nacional de Saúde Dr. Ricardo Jorge (INSA), Lisbon, Portugal.
- NOVA School of Science and Technology, Universidade Nova de Lisboa, Lisbon, Portugal.
- Department of Medical Chemistry, College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates.
| | - Deborah Penque
- Human Genetics Department, Instituto Nacional de Saúde Dr. Ricardo Jorge (INSA), Lisbon, Portugal.
- Center for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School-FCM, UNL, Lisbon, Portugal.
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2
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Inouye S, Matsuda K, Nakamura M. Enzymatic sulfation of coelenterazine by human cytosolic aryl sulfotransferase SULT1A1: identification of coelenterazine C2-benzyl monosulfate by LC/ESI-TOF-MS. Biochem Biophys Res Commun 2023; 665:133-140. [PMID: 37163933 DOI: 10.1016/j.bbrc.2023.05.007] [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: 04/16/2023] [Accepted: 05/02/2023] [Indexed: 05/12/2023]
Abstract
Coelenterazine (CTZ) is known as a light-emitting source for the bioluminescence reaction in marine organisms. CTZ has two phenolic hydroxy groups at the C2-benzyl and C6-phenyl positions, and a keto-enol type hydroxy group at the C3-position in the core structure of imidazopyrazinone (= 3,7-dihydroimidazopyrazin-3-one). These hydroxy groups in CTZ could be sulfated by sulfotransferase(s), and the sulfates of Watasenia luciferin (CTZ disulfate at the C2- and C6-positions) and Renilla pre-luciferin (CTZ 3-enol sulfate) have been identified in marine organisms. To characterize the sulfation process of CTZ, human cytosolic aryl sulfotransferase SULT1A1 (SUTase) was used as a model enzyme. The sulfated products catalyzed by SUTase with 3'-phosphoadenosine 5'-phosphosulfate (PAPS) were analyzed by LC/ESI-TOF-MS. The product was the monosulfate of CTZ and identified as the C2-benzyl sulfate of CTZ (CTZ C2-benzyl monosulfate), but CTZ disulfate, CTZ 3-enol sulfate, and CTZ C6-phenyl monosulfate were not detected. The non-enzymatic oxidation products of dehydrocoelenterazine (dCTZ, dehydrogenated derivative of CTZ), coelenteramide (CTMD), and coelenteramine (CTM) from CTZ were also identified as their monosulfates.
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Affiliation(s)
- Satoshi Inouye
- Department of Biochemistry, School of Dentistry, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, 464-8650, Japan.
| | - Kazuo Matsuda
- Graduate School of Integrated Arts and Sciences, Tokushima University, Tokushima, 770-8502, Japan
| | - Mitsuhiro Nakamura
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, 770-8506, Japan
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3
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Eisele BS, Luka Z, Wu AJ, Yang F, Hale AT, York JD. Sulfation of glycosaminoglycans depends on the catalytic activity of lithium-inhibited phosphatase BPNT2 in vitro. J Biol Chem 2021; 297:101293. [PMID: 34634304 PMCID: PMC8551643 DOI: 10.1016/j.jbc.2021.101293] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/29/2021] [Accepted: 10/06/2021] [Indexed: 01/02/2023] Open
Abstract
Golgi-resident bisphosphate nucleotidase 2 (BPNT2) is a member of a family of magnesium-dependent, lithium-inhibited phosphatases that share a three-dimensional structural motif that directly coordinates metal binding to effect phosphate hydrolysis. BPNT2 catalyzes the breakdown of 3'-phosphoadenosine-5'-phosphate, a by-product of glycosaminoglycan (GAG) sulfation. KO of BPNT2 in mice leads to skeletal abnormalities because of impaired GAG sulfation, especially chondroitin-4-sulfation, which is critical for proper extracellular matrix development. Mutations in BPNT2 have also been found to underlie a chondrodysplastic disorder in humans. The precise mechanism by which the loss of BPNT2 impairs sulfation remains unclear. Here, we used mouse embryonic fibroblasts (MEFs) to test the hypothesis that the catalytic activity of BPNT2 is required for GAG sulfation in vitro. We show that a catalytic-dead Bpnt2 construct (D108A) does not rescue impairments in intracellular or secreted sulfated GAGs, including decreased chondroitin-4-sulfate, present in Bpnt2-KO MEFs. We also demonstrate that missense mutations in Bpnt2 adjacent to the catalytic site, which are known to cause chondrodysplasia in humans, recapitulate defects in overall GAG sulfation and chondroitin-4-sulfation in MEF cultures. We further show that treatment of MEFs with lithium (a common psychotropic medication) inhibits GAG sulfation and that this effect depends on the presence of BPNT2. Taken together, this work demonstrates that the catalytic activity of an enzyme potently inhibited by lithium can modulate GAG sulfation and therefore extracellular matrix composition, revealing new insights into lithium pharmacology.
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Affiliation(s)
- Brynna S Eisele
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee, USA; Department of Pharmacology, Vanderbilt University, Nashville, Tennessee, USA
| | - Zigmund Luka
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee, USA
| | - Alice J Wu
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee, USA
| | - Fei Yang
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee, USA
| | - Andrew T Hale
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee, USA
| | - John D York
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee, USA.
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4
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Modulation of sulfur assimilation metabolic toxicity overcomes anemia and hemochromatosis in mice. Adv Biol Regul 2020; 76:100694. [PMID: 32019729 DOI: 10.1016/j.jbior.2020.100694] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/09/2020] [Accepted: 01/16/2020] [Indexed: 02/07/2023]
Abstract
Sulfur assimilation is an essential metabolic pathway that regulates sulfation, amino acid metabolism, nucleotide hydrolysis, and organismal homeostasis. We recently reported that mice lacking bisphosphate 3'-nucleotidase (BPNT1), a key regulator of sulfur assimilation, develop iron-deficiency anemia (IDA) and anasarca. Here we demonstrate two approaches that successfully reduce metabolic toxicity caused by loss of BPNT1: 1) dietary methionine restriction and 2) overproduction of a key transcriptional regulator hypoxia inducible factor 2α (Hif-2a). Reduction of methionine in the diet reverses IDA in mice lacking BPNT1, through a mechanism of downregulation of sulfur assimilation metabolic toxicity. Gaining Hif-2a acts through a different mechanism by restoring iron homeostatic gene expression in BPNT1 deficient mouse intestinal organoids. Finally, as loss of BPNT1 impairs expression of known genetic modifiers of iron-overload, we demonstrate that intestinal-epithelium specific loss of BPNT1 attenuates hepatic iron accumulation in mice with homozygous C282Y mutations in homeostatic iron regulator (HFEC282Y), the most common cause of hemochromatosis in humans. Overall, our study uncovers genetic and dietary strategies to overcome anemia caused by defects in sulfur assimilation and identifies BPNT1 as a potential target for the treatment of hemochromatosis.
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5
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Wang CC, Chen BH, Lu LY, Hung KS, Yang YS. Preparation of Tyrosylprotein Sulfotransferases for In Vitro One-Pot Enzymatic Synthesis of Sulfated Proteins/Peptides. ACS OMEGA 2018; 3:11633-11642. [PMID: 30320268 PMCID: PMC6173500 DOI: 10.1021/acsomega.7b01533] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 04/13/2018] [Indexed: 06/08/2023]
Abstract
Protein tyrosine sulfation (PTS), catalyzed by membrane-anchored tyrosylprotein sulfotransferase (TPST), is one of the most common post-translational modifications of secretory and transmembrane proteins. PTS, a key modulator of extracellular protein-protein interactions, accounts for various important biological activities, namely, virus entry, inflammation, coagulation, and sterility. The preparation and characterization of TPST is fundamental for understanding the synthesis of tyrosine-sulfated proteins and for studying PTS in biology. A sulfated protein was prepared using a TPST-coupled protein sulfation system that involves the generation of the active sulfate 3'-phosphoadenosine-5'-phosphosulfate (PAPS) through either PAPS synthetase (PAPSS) or phenol sulfotransferase. The preparation of sulfated proteins was confirmed through radiometric or immunochemical assays. In this study, enzymatically active Drosophila melanogaster TPST (DmTPST) and human TPSTs (hTPST1 and hTPST2) were expressed in Escherichia coli BL21(DE3) host cells and purified to homogeneity in high yield. Our results revealed that recombinant DmTPST was particularly useful considering its catalytic efficiency and ease of preparation in large quantities. This study provides tools for high-efficiency, one-step synthesis of sulfated proteins and peptides that are useful for further deciphering the mechanisms, functions, and future applications of PTS.
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Affiliation(s)
- Chen-Chu Wang
- Department
of Biological Science and Technology, National
Chiao Tung University, No. 75, Po-Ai Street, Hsinchu 30050, Taiwan
| | - Bo-Han Chen
- Department
of Biological Science and Technology, National
Chiao Tung University, No. 75, Po-Ai Street, Hsinchu 30050, Taiwan
| | - Lu-Yi Lu
- Department
of Biological Science and Technology, National
Chiao Tung University, No. 75, Po-Ai Street, Hsinchu 30050, Taiwan
| | - Kuo-Sheng Hung
- Department
of Neurosurgery, Center of Excellence for Clinical Trial and Research, Taipei Medical University-Wan Fang Medical Center, No.111, Section 3, Hsing-Long Road, Taipei 11696, Taiwan
| | - Yuh-Shyong Yang
- Department
of Biological Science and Technology, National
Chiao Tung University, No. 75, Po-Ai Street, Hsinchu 30050, Taiwan
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6
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Chen BH, Wang CC, Hou YH, Mao YC, Yang YS. Mechanism of sulfotransferase pharmacogenetics in altered xenobiotic metabolism. Expert Opin Drug Metab Toxicol 2015; 11:1053-71. [DOI: 10.1517/17425255.2015.1045486] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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7
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Role for cytoplasmic nucleotide hydrolysis in hepatic function and protein synthesis. Proc Natl Acad Sci U S A 2013; 110:5040-5. [PMID: 23479625 DOI: 10.1073/pnas.1205001110] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Nucleotide hydrolysis is essential for many aspects of cellular function. In the case of 3',5'-bisphosphorylated nucleotides, mammals possess two related 3'-nucleotidases, Golgi-resident 3'-phosphoadenosine 5'-phosphate (PAP) phosphatase (gPAPP) and Bisphosphate 3'-nucleotidase 1 (Bpnt1). gPAPP and Bpnt1 localize to distinct subcellular compartments and are members of a conserved family of metal-dependent lithium-sensitive enzymes. Although recent studies have demonstrated the importance of gPAPP for proper skeletal development in mice and humans, the role of Bpnt1 in mammals remains largely unknown. Here we report that mice deficient for Bpnt1 do not exhibit skeletal defects but instead develop severe liver pathologies, including hypoproteinemia, hepatocellular damage, and in severe cases, frank whole-body edema and death. Accompanying these phenotypes, we observed tissue-specific elevations of the substrate PAP, up to 50-fold in liver, repressed translation, and aberrant nucleolar architecture. Remarkably, the phenotypes of the Bpnt1 knockout are rescued by generating a double mutant mouse deficient for both PAP synthesis and hydrolysis, consistent with a mechanism in which PAP accumulation is toxic to tissue function independent of sulfation. Overall, our study defines a role for Bpnt1 in mammalian physiology and provides mechanistic insights into the importance of sulfur assimilation and cytoplasmic PAP hydrolysis to normal liver function.
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8
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Chen BH, Wang CC, Lu LY, Hung KS, Yang YS. Fluorescence assay for protein post-translational tyrosine sulfation. Anal Bioanal Chem 2012; 405:1425-9. [PMID: 23161068 DOI: 10.1007/s00216-012-6540-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 10/27/2012] [Accepted: 10/31/2012] [Indexed: 12/16/2022]
Abstract
We developed a fluorescent assay to conveniently determine the kinetics of protein sulfation, which is essential for understanding interface between protein sulfation and protein-protein interactions. Tyrosylprotein sulfotransferase (TPST) catalyzes protein sulfation using 3'-phosphate 5'-phosphosulfate (PAPS) as sulfuryl group donor. In this report, PAPS was regenerated following sulfuryl group transfer between adenosine 3',5'-diphosphate and 4-methylumbelliferyl sulfate catalyzed by phenol sulfotransferase (PST). The TPST and PST coupled enzyme platform continuously generated fluorescent 4-methylumbelliferone (MU) that was used to real-time monitor protein sulfation. Using a recombinant N utilization substance protein A fused Drosophila melanogaster tyrosylprotein sulfotransferase, we demonstrated that the activity of TPST determined through MU fluorescence directly correlated with protein sulfation. Kinetic constants obtained with small P-selectin glycoprotein ligand-1 peptide (PSGL-1 peptide, MW 1541) or its large glutathione S-transferase fusion protein (GST-PSGL-1, MW 27833) exhibited significant variation. This assay can be further developed to a high-throughput method for the characterization of TPSTs and for the identification and screening of their protein substrates.
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Affiliation(s)
- Bo-Han Chen
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
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9
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Lin CH, Lin ES, Su TM, Hung KS, Yang YS. A nano switch mechanism for the redox-responsive sulfotransferase. Biochem Pharmacol 2012; 84:224-31. [DOI: 10.1016/j.bcp.2012.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 04/02/2012] [Accepted: 04/02/2012] [Indexed: 10/28/2022]
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10
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Paul P, Suwan J, Liu J, Dordick JS, Linhardt RJ. Recent advances in sulfotransferase enzyme activity assays. Anal Bioanal Chem 2012; 403:1491-500. [PMID: 22526635 PMCID: PMC3425364 DOI: 10.1007/s00216-012-5944-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 03/09/2012] [Accepted: 03/12/2012] [Indexed: 10/28/2022]
Abstract
Sulfotransferases are enzymes that catalyze the transfer of sulfo groups from a donor, for example 3'-phosphoadenosine 5'-phosphosulfate, to an acceptor, for example the amino or hydroxyl groups of a small molecule, xenobiotic, carbohydrate, or peptide. These enzymes are important targets in the design of novel therapeutics for treatment of a variety of diseases. This review examines assays used for this important class of enzyme, paying particular attention to sulfotransferases acting on carbohydrates and peptides and the major challenges associated with their analysis.
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Affiliation(s)
- Priscilla Paul
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Jiraporn Suwan
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Jian Liu
- Division of Medicinal Chemistry and National Products, College of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Jonathan S. Dordick
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. Department of Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Biotechnology Center, 4005, Troy, NY 12180, USA
| | - Robert J. Linhardt
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. Department of Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Biotechnology Center, 4005, Troy, NY 12180, USA
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11
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An improved HPLC method for the quantitation of 3'-phosphoadenosine 5'-phosphate (PAP) to assay sulfotransferase enzyme activity in HepG2 cells. J Pharm Biomed Anal 2012; 62:182-6. [PMID: 22277353 DOI: 10.1016/j.jpba.2011.12.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Revised: 12/13/2011] [Accepted: 12/13/2011] [Indexed: 11/23/2022]
Abstract
Sulfotransferase-catalyzed (SULT-catalyzed) sulfation is responsible for hormone regulation and xenobiotic detoxification. In the current study, a sensitive and widely applicable method of reversed-phase HPLC-UV was developed for the determination of 3'-phosphoadenosine 5'-phosphate (PAP), a common product of different subtypes of sulfation reactions, in HepG2 cells. The analyte was separated on a ZORBAX Extend-C18 column with the mobile phase of methanol and water containing 75 mM KH(2)PO(4), 100mM NH(4)Cl, and 1mM 1-octylamine (pH 4.55), at a flow rate of 1.0 ml/min. The assay exhibited linearity over the range of 0.1-20 μM for PAP with a correlation coefficient of 0.9995. The total time per run was under 10 min. The intra- and inter-day precision was less than 7.2%, with accuracy in the range 82.6-102.0%. The method was applied to the determination of kinetic parameters K(m), V(m), and K(cat), of three different SULTs (SULT1A1, SULT2A1, and SULT1E1) in HepG2. This universal HPLC-UV method was easy to perform, economically feasible, and suitably efficient for the investigation of the enzyme kinetics of the SULT family using multiplex substrates.
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12
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Lu LY, Hsu YC, Yang YS. Spectrofluorometric assay for monoamine-preferring phenol sulfotransferase (SULT1A3). Anal Biochem 2010; 404:241-3. [PMID: 20566371 DOI: 10.1016/j.ab.2010.06.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2010] [Revised: 05/28/2010] [Accepted: 06/01/2010] [Indexed: 11/19/2022]
Abstract
A continuous and real-time fluorometric assay for monoamine-preferring phenol sulfotransferase (SULT1A3) was developed. The methodology was based on the coupling of SULT1A1 to regenerate 3'-phosphoadenosine-5'-phosphosulfate (PAPS) using 4-methylumbelliferyl sulfate (MUS) as a sulfuryl group donor. The fluorophore product (4-methylumbelliferone, MU) was continuously produced and monitored when SULT1A3 catalyzed dopamine sulfation with PAPS. The optimal conditions of this turnover reaction and substrate inhibition of SULT1A3 were also determined. This coupled-enzyme assay allows the continuous measurement of initial reaction velocity and the sensitivity is comparable to that of end-point radioactive isotope assay.
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Affiliation(s)
- Lu-Yi Lu
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan, ROC
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13
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Tyapochkin E, Cook PF, Chen G. para-Nitrophenyl sulfate activation of human sulfotransferase 1A1 is consistent with intercepting the E[middle dot]PAP complex and reformation of E[middle dot]PAPS. J Biol Chem 2009; 284:29357-64. [PMID: 19706609 DOI: 10.1074/jbc.m109.049312] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cytosolic sulfotransferase (SULT)-catalyzed sulfation regulates biological activities of various biosignaling molecules and metabolizes hydroxyl-containing drugs and xenobiotics. The universal sulfuryl group donor for SULT-catalyzed sulfation is adenosine 3'-phosphate 5'-phosphosulfate (PAPS), whereas the reaction products are a sulfated product and adenosine 3',5'-diphosphate (PAP). Although SULT-catalyzed kinetic mechanisms have been studied since the 1980s, they remain unclear. Human SULT1A1 is an important phase II drug-metabolizing enzyme. Previously, isotope exchange at equilibrium indicated steady-state ordered mechanism with PAPS and PAP binding to the free SULT1A1 (Tyapochkin, E., Cook, P. F., and Chen, G. (2008) Biochemistry 47, 11894-11899). On the basis of activation of SULT1A1 by para-nitrophenyl sulfate (pNPS), an ordered bypass mechanism has been proposed where pNPS sulfates PAP prior to its release from the E.PAP complex regenerating E.PAPS. Data are consistent with uncompetitive substrate inhibition by naphthol as a result of formation of the E.PAP.naphthol dead-end complex; formation of the complex is corroborated by naphthol/PAP double inhibition experiments. pNPS activation data demonstrate an apparent ping-pong behavior with pNPS adding to E.PAP, and competitive inhibition by naphthol consistent with formation of the E.PAP.naphthol complex. Exchange against forward reaction flux (PAPS plus naphthol) beginning with [35S]PAPS and generating [35S]naphthyl sulfate is also consistent with pNPS intercepting the E.PAP complex. Overall, data are consistent with the proposed ordered bypass mechanism.
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Affiliation(s)
- Eduard Tyapochkin
- Department of Physiological Sciences, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, Oklahoma 74078, USA
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14
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Lee CC, Chiang HP, Li KL, Ko FH, Su CY, Yang YS. Surface Reaction Limited Model for the Evaluation of Immobilized Enzyme on Planar Surfaces. Anal Chem 2009; 81:2737-44. [DOI: 10.1021/ac802650k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cheng-Che Lee
- Institute of Biological Science and Technology, Institute of Nanotechnology, National Chiao Tung University, Hsinchu, Taiwan, and Instrument Technology Research Center, National Applied Research Laboratories (NARL), Hsinchu, Taiwan
| | - Han-Ping Chiang
- Institute of Biological Science and Technology, Institute of Nanotechnology, National Chiao Tung University, Hsinchu, Taiwan, and Instrument Technology Research Center, National Applied Research Laboratories (NARL), Hsinchu, Taiwan
| | - Kun-Lin Li
- Institute of Biological Science and Technology, Institute of Nanotechnology, National Chiao Tung University, Hsinchu, Taiwan, and Instrument Technology Research Center, National Applied Research Laboratories (NARL), Hsinchu, Taiwan
| | - Fu-Hsiang Ko
- Institute of Biological Science and Technology, Institute of Nanotechnology, National Chiao Tung University, Hsinchu, Taiwan, and Instrument Technology Research Center, National Applied Research Laboratories (NARL), Hsinchu, Taiwan
| | - Chien-Ying Su
- Institute of Biological Science and Technology, Institute of Nanotechnology, National Chiao Tung University, Hsinchu, Taiwan, and Instrument Technology Research Center, National Applied Research Laboratories (NARL), Hsinchu, Taiwan
| | - Yuh-Shyong Yang
- Institute of Biological Science and Technology, Institute of Nanotechnology, National Chiao Tung University, Hsinchu, Taiwan, and Instrument Technology Research Center, National Applied Research Laboratories (NARL), Hsinchu, Taiwan
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15
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Chen WT, Liu MC, Yang YS. Fluorometric assay for alcohol sulfotransferase. Anal Biochem 2005; 339:54-60. [PMID: 15766710 DOI: 10.1016/j.ab.2004.12.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2004] [Indexed: 10/26/2022]
Abstract
A sensitive fluorometric assay was developed for alcohol sulfotransferase (AST). This was the first continuous fluorometric assay reported for AST. It used 3'-phosphoadenosine 5'-phosphosulfate regenerated from 3-phosphoadenosine 5'-phosphate by a recombinant phenol sulfotransferase (PST) using 4-methylumbelliferyl sulfate as the sulfuryl group donor. The recombinant PST did not use the alcohol substrate under the designed condition, and the sensitivity for AST activity was found to be comparable to that of radioactive assay as reported in the literature. The change of fluorescence intensity of 4-methylumbelliferone corresponded directly to the amount of active AST and was sensitive enough to measure nanogram or picomole amounts of the enzyme activity. This fluorometric assay was used to determine the activities of AST as purified form and in crude extracts of pig liver, rat liver, and Escherichia coli. Some properties of human dehydroepiandrosterone sulfotransferase were determined by this method and were found to be comparable to published data. Under similar assay conditions, the contaminated activities of arylsulfatase in crude extracts were also determined. This method not only is useful for the routine and detailed kinetic study of this important class of enzymes but also has the potential for the development of a high-throughput procedure using microplate reader.
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Affiliation(s)
- Wei-Ti Chen
- Institute of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan, ROC
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16
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Nováková S, Van Dyck S, Glatz Z, Van Schepdael A, Hoogmartens J. Study of enzyme kinetics of phenol sulfotransferase by electrophoretically mediated microanalysis. J Chromatogr A 2004; 1032:319-26. [PMID: 15065811 DOI: 10.1016/j.chroma.2003.11.082] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Electrophoretically mediated microanalysis (EMMA) was applied for the study of the kinetic parameters of the enzymatic reaction of phenol sulfotransferase SULT1A1 isoenzyme with 4-nitrophenol as a substrate. The SULT1A1 activity was determined by the quantitation of the product, 4-nitrophenyl sulfate, at 274 nm by using different injection and separation steps. This new approach solved the problem of the presence of the very strong inhibitor, adenosine 3',5'-bisphosphate (PAP), in the co-substrate solution (adenosine 3'-phosphate 5'-phosphosulfate, PAPS) which is unstable at room temperature. The inhibitor PAP was electrophoretically separated from the co-substrate PAPS before the injection of enzyme and substrate inside the capillary (and thus before their in-capillary encountering). With the developed in-capillary SULT1A1 activity assay an average Michaelis constant (Km) for 4-nitrophenol was calculated to be 0.84 microM, a value which is consistent with a previously reported value. Strong substrate inhibition (above a 4-nitrophenol concentration of 2.5 microM) was observed, and this is also in accordance with literature values.
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Affiliation(s)
- Sona Nováková
- Department of Biochemistry, Faculty of Science, Masaryk University Brno, Kotlárská 2, 61137 Brno, Czech Republic
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17
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Su TM, Yang YS. Mechanism of posttranslational regulation of phenol sulfotransferase: expression of two enzyme forms through redox modification and nucleotide binding. Biochemistry 2003; 42:6863-70. [PMID: 12779341 DOI: 10.1021/bi0342463] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Sulfotransferase catalyzes sulfuryl group transfer between a nucleotide and a variety of nucleophiles that may be sugar, protein, xenobiotics, and other small molecules. Nucleotides may serve as cosubstrate, cofactor, inhibitor, or regulator in an enzyme catalyzed sulfuryl group transfer reaction. We are trying to understand how nucleotide regulates the activity of phenol sulfotransferase (PST) through the expression of two enzyme forms. The homogeneous rat recombinant PST was obtained from Escherichia coli, and the nucleotide copurified was examined. The nucleotide was completely removed from inactive PST in high salt and oxidative condition. Total enzyme activity was recovered following incubation in reductive environment. Many nucleotides are known to tightly bind to PST but only one nucleotide, 3'-phosphoadenosine 5'-phosphate (PAP), was identified to combine with PST by ion-pair RP-HPLC, UV-visible spectra, (31)P NMR, and ESI-MS and MS-MS spectrometry. In addition to the presence or absence of PAP, oxidation following reduction of PST was required to completely interconvert the two forms of PST. According to the experimental results, a mechanism for the formation of the two enzyme forms was proposed.
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Affiliation(s)
- Tian-Mu Su
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan, Republic of China
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18
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Lin ES, Yang YS, Yang JM. Modeling the Binding and Inhibition Mechanism of Nucleotides and Sulfotransferase Using Molecular Docking. J CHIN CHEM SOC-TAIP 2003. [DOI: 10.1002/jccs.200300095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Burkart MD, Izumi M, Chapman E, Lin CH, Wong CH. Regeneration of PAPS for the enzymatic synthesis of sulfated oligosaccharides. J Org Chem 2000; 65:5565-74. [PMID: 10970295 DOI: 10.1021/jo000266o] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper describes the study of 3'-phosphoadenosine-5'-phosphosulfate (PAPS) regeneration from 3'-phosphoadenosine-5'-phosphate (PAP) for use in practical syntheses of carbohydrate sulfates which are catalyzed by sulfotransferases. Among the regeneration systems, the one with recombinant aryl sulfotransferase proved to be the most practical. This regeneration system was coupled with a sulfotransferase-catalyzed reaction, using a recombinant Nod factor sulfotransferase, for the synthesis of various oligosaccharide sulfates that were further glycosylated using glycosyltransferases.
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Affiliation(s)
- M D Burkart
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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20
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Lin ES, Yang YS. Nucleotide binding and sulfation catalyzed by phenol sulfotransferase. Biochem Biophys Res Commun 2000; 271:818-22. [PMID: 10814545 DOI: 10.1006/bbrc.2000.2722] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The sulfation of a nucleotide is an indispensable step for the sulfuryl group transfer in a biological system. The product and cosubstrate of sulfotransferase in physiological condition are adenosine 3',5'-bisphosphate (PAP) and 3'-phospho adenosine 5'-phosphosulfate (PAPS), respectively. We find that ribose and adenine, two major parts of the adenosine nucleotide, bind tightly to phenol sulfotransferase (PST) separately, and various nucleotides also bind tightly to PST. We determine the dissociation constants of a variety of nucleotides and examine their potential as cofactors or cosubstrates of PST. Using 4-nitrophenyl sulfate as the sulfuryl group donor, three nucleotides, adenosine 5'-monophosphate (AMP), adenosine 2',5'-bisphosphate (2',5'-PAP), and adenosine 2':3'-cyclic phosphate 5'-phosphate (2':3'-cyclic PAP), are shown here for the first time to be sulfated at 5'-phopho position by a PST catalyzed reaction. Spectrophotometry, HPLC, and (31)P NMR are used to determine the activity of PST and identify the sulfated nucleotides. The V(max) of PST and K(m) of these nucleotides are determined when they are used as cofactors or cosubstrates for the sulfuryl group transfer. The existence and possible physiological significance of these newly reported binding and sulfation of nucleotides by PST in biology is yet to be discovered.
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Affiliation(s)
- E S Lin
- Department of Biological Science and Technology, College of Science, Hsinchu, Taiwan, Republic of China
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21
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Burkart MD, Wong CH. A continuous assay for the spectrophotometric analysis of sulfotransferases using aryl sulfotransferase IV. Anal Biochem 1999; 274:131-7. [PMID: 10527506 DOI: 10.1006/abio.1999.4264] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have developed a continuous spectrophotometric coupled-enzyme assay for sulfotransferase activity. This assay is based on the regeneration of 3'-phosphoadenosine-5'-phosphosulfate (PAPS) from the desulfated 3'-phosphoadenosine-5'-phosphate (PAP) by a recombinant aryl sulfotransferase using p-nitrophenyl sulfate as the sulfate donor and visible spectrophotometric indicator of enzyme turnover. Here recombinant rat aryl sulfotransferase IV (AST-IV) is expressed, resolved to the pure beta-form during purification, and utilized for the regeneration. The activity of betaAST-IV to catalyze the synthesis of PAPS from PAP and p-nitrophenyl sulfate is demonstrated via capillary zone electrophoresis, and the kinetics of this reverse-physiological reaction are calculated. betaAST-IV is then applied to the coupled enzyme system, where the steady-state activity of the commercially available Nod factor sulfotransferase is verified with an enzyme concentration study and substrate-specificity assays of N-chitoses. The potential applications of this assay include rapid kinetic determinations for carbohydrate and protein sulfotransferases, high-throughput screening of potential sulfotransferase substrates and inhibitors, and biomedical screening of blood samples and other tissues for specific sulfotransferase enzyme activity and substrate concentration.
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Affiliation(s)
- M D Burkart
- Skaggs Institute for Chemical Biology, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037, USA
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22
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Burkart MD, Izumi M, Wong CH. Enzymatische Regeneration von 3′-Phosphoadenosin-5′-phosphosulfat mit Aryl-Sulfotransferase zur präparativen enzymatischen Synthese von sulfatierten Kohlenhydraten. Angew Chem Int Ed Engl 1999. [DOI: 10.1002/(sici)1521-3757(19990917)111:18<2912::aid-ange2912>3.0.co;2-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Leach M, Cameron E, Fite N, Stassinopoulos J, Palmreuter N, Beckmann JD. Inhibition and binding studies of coenzyme A and bovine phenol sulfotransferase. Biochem Biophys Res Commun 1999; 261:815-9. [PMID: 10441507 DOI: 10.1006/bbrc.1999.1096] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Phenol sulfotransferases (PSTs, EC 2.8.2.1) catalyze sulfonyl group transfer from 3'-phosphoadenosine-5'-phosphosulfate (PAPS) to the hydroxyl oxygen of aromatic acceptor substrates. The structural overlap between PAPS and coenzyme A (CoA) suggested a possible role of this common acyl carrier in modulating PST activity. To test this hypothesis, purified recombinant bovine PST was examined by kinetic and affinity chromatographic approaches. After demonstrating PST enzyme inhibition by CoA, systematic variation of CoA and PAPS concentrations indicated simple competitive inhibition with K(i) = 1. 3 microM. PST bound to CoA-agarose, attached via the pantetheinyl thiol group, was eluted with PAP but not by 2-naphthol. This observation was consistent with the pattern of inhibition. Additional members of the sulfotransferase superfamily, as well as acylated CoAs, should be further investigated.
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Affiliation(s)
- M Leach
- Department of Biochemistry, Alma College, 614 W. Superior Street, Alma, Michigan, 48801, USA
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