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Hu DG, Marri S, Hulin JA, Ansaar R, Mackenzie PI, McKinnon RA, Meech R. Activation of Cryptic Donor Splice Sites within the UDP-Glucuronosyltransferase (UGT)1A First-Exon Region Generates Variant Transcripts That Encode UGT1A Proteins with Truncated Aglycone-Binding Domains. Drug Metab Dispos 2024; 52:526-538. [PMID: 38565302 DOI: 10.1124/dmd.123.001565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 02/19/2024] [Accepted: 03/18/2024] [Indexed: 04/04/2024] Open
Abstract
The human UDP-glucuronosyltransferases (UGTs) have crucial roles in metabolizing and clearing numerous small lipophilic compounds. The UGT1A locus generates nine UGT1A mRNAs, 65 spliced transcripts, and 34 circular RNAs. In this study, our analysis of published UGT-RNA capture sequencing (CaptureSeq) datasets identified novel splice junctions that predict 24 variant UGT1A transcripts derived from ligation of exon 2 to unique sequences within the UGT1A first-exon region using cryptic donor splice sites. Of these variants, seven (1A1_n1, 1A3_n3, 1A4_n4, 1A5_n1, 1A8_n2, 1A9_n2, 1A10_n7) are predicted to encode UGT1A proteins with truncated aglycone-binding domains. We assessed their expression profiles and deregulation in cancer using four RNA sequencing (RNA-Seq) datasets of paired normal and cancerous drug-metabolizing tissues from large patient cohorts. Variants were generally coexpressed with their canonical counterparts with a higher relative abundance in tumor than in normal tissues. Variants showed tissue-specific expression with high interindividual variability but overall low abundance. However, 1A8_n2 showed high abundance in normal and cancerous colorectal tissues, with levels that approached or surpassed canonical 1A8 mRNA levels in many samples. We cloned 1A8_n2 and showed expression of the predicted protein (1A8_i3) in human embryonic kidney (HEK)293T cells. Glucuronidation assays with 4-methylumbelliferone (4MU) showed that 1A8_i3 had no activity and was unable to inhibit the activity of 1A8_i1 protein. In summary, the activation of cryptic donor splice sites within the UGT1A first-exon region expands the UGT1A transcriptome and proteome. The 1A8_n2 cryptic donor splice site is highly active in colorectal tissues, representing an important cis-regulatory element that negatively regulates the function of the UGT1A8 gene through pre-mRNA splicing. SIGNIFICANT STATEMENT: The UGT1A locus generates nine canonical mRNAs, 65 alternately spliced transcripts, and 34 different circular RNAs. The present study reports a series of novel UDP-glucuronosyltransferase (UGT)1A variants resulting from use of cryptic donor splice sites in both normal and cancerous tissues, several of which are predicted to encode variant UGT1A proteins with truncated aglycone-binding domains. Of these, 1A8_n2 shows exceptionally high abundance in colorectal tissues, highlighting its potential role in the first-pass metabolism in gut through the glucuronidation pathway.
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Affiliation(s)
- Dong Gui Hu
- College of Medicine and Public Health, Flinders Health and Medical Research Institute Flinders University, Bedford Park, Australia
| | - Shashikanth Marri
- College of Medicine and Public Health, Flinders Health and Medical Research Institute Flinders University, Bedford Park, Australia
| | - Julie-Ann Hulin
- College of Medicine and Public Health, Flinders Health and Medical Research Institute Flinders University, Bedford Park, Australia
| | - Radwan Ansaar
- College of Medicine and Public Health, Flinders Health and Medical Research Institute Flinders University, Bedford Park, Australia
| | - Peter I Mackenzie
- College of Medicine and Public Health, Flinders Health and Medical Research Institute Flinders University, Bedford Park, Australia
| | - Ross A McKinnon
- College of Medicine and Public Health, Flinders Health and Medical Research Institute Flinders University, Bedford Park, Australia
| | - Robyn Meech
- College of Medicine and Public Health, Flinders Health and Medical Research Institute Flinders University, Bedford Park, Australia
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2
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Hu DG, Marri S, Hulin JA, McKinnon RA, Mackenzie PI, Meech R. A Comprehensive Bioinformatic Analysis of RNA-seq Datasets Reveals a Differential and Variable Expression of Wildtype and Variant UGT1A Transcripts in Human Tissues and Their Deregulation in Cancers. Cancers (Basel) 2024; 16:353. [PMID: 38254842 PMCID: PMC10814044 DOI: 10.3390/cancers16020353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
The UGT1A locus generates over 60 different alternatively spliced transcripts and 30 circular RNAs. To date, v2 and v3 transcripts are the only variant UGT1A transcripts that have been functionally characterized. Both v2 and v3 transcripts encode the same inactive variant UGT1A proteins (i2s) that can negatively regulate glucuronidation activity and influence cancer cell metabolism. However, the abundance and interindividual variability in the expression of v2 and v3 transcripts in human tissues and their potential deregulation in cancers have not been comprehensively assessed. To address this knowledge gap, we quantified the expression levels of v1, v2, and v3 transcripts using RNA-seq datasets with large cohorts of normal tissues and paired normal and tumor tissues from patients with six different cancer types (liver, kidney, colon, stomach, esophagus, and bladder cancer). We found that v2 and v3 abundance varied significantly between different tissue types, and that interindividual variation was also high within the same tissue type. Moreover, the ratio of v2 to v3 variants varied between tissues, implying their differential regulation. Our results showed higher v2 abundance in gastrointestinal tissues than liver and kidney tissues, suggesting a more significant negative regulation of glucuronidation by i2 proteins in gastrointestinal tissues than in liver and kidney tissues. We further showed differential deregulation of wildtype (v1) and variant transcripts (v2, v3) in cancers that generally increased the v2/v1 and/or v3/v1 expression ratios in tumors compared to normal tissues, indicating a more significant role of the variants in tumors. Finally, we report ten novel UGT1A transcripts with novel 3' terminal exons, most of which encode variant proteins with a similar structure to UGT1A_i2 proteins. These findings further emphasize the diversity of the UGT1A transcriptome and proteome.
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Affiliation(s)
- Dong Gui Hu
- College of Medicine and Public Health, Flinders Health and Medical Research Institute, Flinders University, Bedford Park, Adelaide 5042, Australia; (S.M.); (J.-A.H.); (R.A.M.); (P.I.M.); (R.M.)
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3
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Zhou L, Montalvo AD, Collins JM, Wang D. Quantitative analysis of the UDP-glucuronosyltransferase transcriptome in human tissues. Pharmacol Res Perspect 2023; 11:e01154. [PMID: 37983911 PMCID: PMC10659769 DOI: 10.1002/prp2.1154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/20/2023] [Accepted: 10/22/2023] [Indexed: 11/22/2023] Open
Abstract
UDP-glucuronosyltransferases (UGTs) are phase II drug metabolizing enzymes that play important roles in the detoxification of endogenous and exogenous substrates. The 22 human UGTs belong to four families (UGT1, UGT2, UGT3, and UGT8) and differ in their expression, substrate specificity, UDP-sugar preference, and physiological functions. Differential expression/activity of the UGTs contributes to interperson variability in drug responses and toxicity, hormone homeostasis, and disease/cancer risks. However, in normal tissues, the tissue-specific expression profiles and transcriptional regulation of the UGTs are still not fully understood. In this study, we comprehensively analyzed the transcriptome of 22 UGTs in 54 human tissues/regions using RNAseq data from GTEx. We then validated the findings in the liver and small intestine samples using real-time PCR. Our results showed large interindividual variability across tissues in the expression of each UGT and the overall composition of UGT pools, consisting of different UGTs and their splice isoforms. Our results also revealed coexpression of the UGTs, Cytochrome P450s, and many transcription factors in the liver, suggesting potential coregulation or functional coordination. Our results provide the groundwork for future studies to detail further the regulation of the expression and activity of the UGTs.
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Affiliation(s)
- Lucas Zhou
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, Center for PharmacogenomicsUniversity of FloridaGainesvilleFloridaUSA
| | - Abelardo D. Montalvo
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, Center for PharmacogenomicsUniversity of FloridaGainesvilleFloridaUSA
| | - Joseph M. Collins
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, Center for PharmacogenomicsUniversity of FloridaGainesvilleFloridaUSA
| | - Danxin Wang
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, Center for PharmacogenomicsUniversity of FloridaGainesvilleFloridaUSA
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4
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Zheng Y, Zhong G, He C, Li M. Targeted splicing therapy: new strategies for colorectal cancer. Front Oncol 2023; 13:1222932. [PMID: 37664052 PMCID: PMC10470845 DOI: 10.3389/fonc.2023.1222932] [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: 05/15/2023] [Accepted: 08/07/2023] [Indexed: 09/05/2023] Open
Abstract
RNA splicing is the process of forming mature mRNA, which is an essential phase necessary for gene expression and controls many aspects of cell proliferation, survival, and differentiation. Abnormal gene-splicing events are closely related to the development of tumors, and the generation of oncogenic isoform in splicing can promote tumor progression. As a main process of tumor-specific splicing variants, alternative splicing (AS) can promote tumor progression by increasing the production of oncogenic splicing isoforms and/or reducing the production of normal splicing isoforms. This is the focus of current research on the regulation of aberrant tumor splicing. So far, AS has been found to be associated with various aspects of tumor biology, including cell proliferation and invasion, resistance to apoptosis, and sensitivity to different chemotherapeutic drugs. This article will review the abnormal splicing events in colorectal cancer (CRC), especially the tumor-associated splicing variants arising from AS, aiming to offer an insight into CRC-targeted splicing therapy.
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Affiliation(s)
| | | | - Chengcheng He
- Department of Gastroenterology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
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5
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Yang X, Weber AA, Mennillo E, Paszek M, Wong S, Le S, Teo JYA, Chang M, Benner CW, Tukey RH, Chen S. Oral arsenic administration to humanizedUDP-glucuronosyltransferase1 neonatal mice induces UGT1A1 through a dependence on Nrf2 and PXR. J Biol Chem 2023; 299:102955. [PMID: 36720308 PMCID: PMC9996368 DOI: 10.1016/j.jbc.2023.102955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/20/2023] [Accepted: 01/24/2023] [Indexed: 01/31/2023] Open
Abstract
Inorganic arsenic (iAs) is an environmental toxicant that can lead to severe health consequences, which can be exacerbated if exposure occurs early in development. Here, we evaluated the impact of oral iAs treatment on UDP-glucuronosyltransferase 1A1 (UGT1A1) expression and bilirubin metabolism in humanized UGT1 (hUGT1) mice. We found that oral administration of iAs to neonatal hUGT1 mice that display severe neonatal hyperbilirubinemia leads to induction of intestinal UGT1A1 and a reduction in total serum bilirubin values. Oral iAs administration accelerates neonatal intestinal maturation, an event that is directly associated with UGT1A1 induction. As a reactive oxygen species producer, oral iAs treatment activated the Keap-Nrf2 pathway in the intestinal tract and liver. When Nrf2-deficient hUGT1 mice (hUGT1/Nrf2-/-) were treated with iAs, it was shown that activated Nrf2 contributed significantly toward intestinal maturation and UGT1A1 induction. However, hepatic UGT1A1 was not induced upon iAs exposure. We previously demonstrated that the nuclear receptor PXR represses liver UGT1A1 in neonatal hUGT1 mice. When PXR was deleted in hUGT1 mice (hUGT1/Pxr-/-), derepression of UGT1A1 was evident in both liver and intestinal tissue in neonates. Furthermore, when neonatal hUGT1/Pxr-/- mice were treated with iAs, UGT1A1 was superinduced in both tissues, confirming PXR release derepressed key regulatory elements on the gene that could be activated by iAs exposure. With iAs capable of generating reactive oxygen species in both liver and intestinal tissue, we conclude that PXR deficiency in neonatal hUGT1/Pxr-/- mice allows greater access of activated transcriptional modifiers such as Nrf2 leading to superinduction of UGT1A1.
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Affiliation(s)
- Xiaojing Yang
- Laboratory of Environmental Toxicology, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - André A Weber
- Laboratory of Environmental Toxicology, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - Elvira Mennillo
- Laboratory of Environmental Toxicology, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - Miles Paszek
- Laboratory of Environmental Toxicology, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - Samantha Wong
- Laboratory of Environmental Toxicology, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - Sabrina Le
- Laboratory of Environmental Toxicology, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - Jia Ying Ashley Teo
- Laboratory of Environmental Toxicology, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - Max Chang
- Department of Medicine, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - Christopher W Benner
- Department of Medicine, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - Robert H Tukey
- Laboratory of Environmental Toxicology, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, California, USA
| | - Shujuan Chen
- Laboratory of Environmental Toxicology, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, California, USA.
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6
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Audet-Delage Y, Rouleau M, Villeneuve L, Guillemette C. The Glycosyltransferase Pathway: An Integrated Analysis of the Cell Metabolome. Metabolites 2022; 12:metabo12101006. [PMID: 36295907 PMCID: PMC9609030 DOI: 10.3390/metabo12101006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/18/2022] [Accepted: 10/19/2022] [Indexed: 11/18/2022] Open
Abstract
Nucleotide sugar-dependent glycosyltransferases (UGTs) are critical to the homeostasis of endogenous metabolites and the detoxification of xenobiotics. Their impact on the cell metabolome remains unknown. Cellular metabolic changes resulting from human UGT expression were profiled by untargeted metabolomics. The abundant UGT1A1 and UGT2B7 were studied as UGT prototypes along with their alternative (alt.) splicing-derived isoforms displaying structural differences. Nineteen biochemical routes were modified, beyond known UGT substrates. Significant variations in glycolysis and pyrimidine pathways, and precursors of the co-substrate UDP-glucuronic acid were observed. Bioactive lipids such as arachidonic acid and endocannabinoids were highly enriched by up to 13.3-fold (p < 0.01) in cells expressing the canonical enzymes. Alt. UGT2B7 induced drastic and unique metabolic perturbations, including higher glucose (18-fold) levels and tricarboxylic acid cycle (TCA) cycle metabolites and abrogated the effects of the UGT2B7 canonical enzyme when co-expressed. UGT1A1 proteins promoted the accumulation of branched-chain amino acids (BCAA) and TCA metabolites upstream of the mitochondrial oxoglutarate dehydrogenase complex (OGDC). Alt. UGT1A1 exacerbated these changes, likely through its interaction with the OGDC component oxoglutarate dehydrogenase-like (OGDHL). This study expands the breadth of biochemical pathways associated with UGT expression and establishes extensive connectivity between UGT enzymes, alt. proteins and other metabolic processes.
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Affiliation(s)
- Yannick Audet-Delage
- Centre Hospitalier Universitaire de Québec Research Center—Université Laval, Faculty of Pharmacy, and Université Laval Cancer Research Center (CRC), R4720, 2705 Blvd Laurier, Québec, QC G1V 4G2, Canada
| | - Michèle Rouleau
- Centre Hospitalier Universitaire de Québec Research Center—Université Laval, Faculty of Pharmacy, and Université Laval Cancer Research Center (CRC), R4720, 2705 Blvd Laurier, Québec, QC G1V 4G2, Canada
| | - Lyne Villeneuve
- Centre Hospitalier Universitaire de Québec Research Center—Université Laval, Faculty of Pharmacy, and Université Laval Cancer Research Center (CRC), R4720, 2705 Blvd Laurier, Québec, QC G1V 4G2, Canada
| | - Chantal Guillemette
- Centre Hospitalier Universitaire de Québec Research Center—Université Laval, Faculty of Pharmacy, and Université Laval Cancer Research Center (CRC), R4720, 2705 Blvd Laurier, Québec, QC G1V 4G2, Canada
- Canada Research Chair in Pharmacogenomics, Université Laval, Québec, QC G1V 4G2, Canada
- Correspondence: ; Tel.: +1-(418)-654-2296
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7
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Zhuo H, Fan J, Zhang B, Shi Y, Zheng L, Chai Y, Yao L. Association of gallstone and polymorphisms of UGT1A1*27 and UGT1A1*28 in patients with hepatitis B virus-related liver failure. Open Med (Wars) 2022; 17:1455-1465. [PMID: 36128448 PMCID: PMC9449690 DOI: 10.1515/med-2022-0549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 08/03/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
Genetic variation in UDP-glucuronosyltransferase 1A1 gene (UGT1A1) is a lithogenic risk factor for gallstone formation. This study aimed to assess genotype and allele frequencies of common UGT1A1 variants in patients with gallstone and hepatitis B virus (HBV)-related hepatic failure. This study enrolled 113 healthy individuals (CTRL), 54 patients with HBV infection (HBV), 134 patients with gallstone-free hepatic failure and HBV infection, and 34 patients with gallstone-related hepatic failure and HBV infection (GRHF). Peripheral venous blood samples were collected for genomic DNA isolation. Polymerase chain reaction amplification was carried out for UGT1A1, followed by direct sequencing. Analysis for genotype and allele frequencies of UGT1A1 variants (UGT1A1*6, UGT1A1*27, UGT1A1*28, and UGT1A1*60) was performed. The allele distributions of the four groups did not deviate from Hardy–Weinberg equilibrium. Allele (A) and genotype (CA) frequency distributions of UGT1A1*27 were significantly different between GRHF and CTRL, or between GRHF and HBV. GRHF and CTRL exhibited significant differences in allele (A) and genotype (CA) frequency distributions of UGT1A1*28. Linkage disequilibrium analysis suggested that haplotype G-G-[TA]7-T may be associated with gallstone in HBV-related hepatic failure. Our data reveal that UGT1A1*27 and UGT1A1*28 variants are significantly observed in patients with GRHF compared to healthy individuals.
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Affiliation(s)
- Haiyan Zhuo
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University , No. 312 Xihong Road , Fuzhou , Fujian, 350025 , P. R. China
| | - Jinhai Fan
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University , Fuzhou , Fujian, 350025 , P. R. China
| | - Bifeng Zhang
- Department of Gastroenterology, Quanzhou First Hospital , Quanzhou , Fujian, 362000 , P. R. China
| | - Yixian Shi
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University , Fuzhou , Fujian, 350025 , P. R. China
| | - Liqing Zheng
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University , Fuzhou , Fujian, 350025 , P. R. China
| | - Yihong Chai
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University , Fuzhou , Fujian, 350025 , P. R. China
| | - Lvfeng Yao
- Department of Hepatology, Mengchao Hepatobiliary Hospital of Fujian Medical University , No. 312 Xihong Road , Fuzhou , Fujian, 350025 , P. R. China
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Helmer E, Karimian N, Van Assche K, Seghers I, Le Tallec S, Cherala G, Scott G, Namour FS. Ziritaxestat Drug-Drug Interaction with Oral Contraceptives: Role of SULT1E1 Inhibition. Clin Pharmacol Ther 2022; 112:901-908. [PMID: 35713964 PMCID: PMC9540497 DOI: 10.1002/cpt.2689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 06/07/2022] [Indexed: 11/24/2022]
Abstract
In vitro signals indicate that ziritaxestat is a weak cytochrome P450 (CYP) 3A4 inhibitor and inducer. Therefore, potential drug–drug interactions (DDIs) with oral contraceptives were examined at a time when ziritaxestat was under development for treatment of fibrotic diseases. This open‐label, crossover (fixed sequence) DDI study enrolled healthy, nonpregnant women aged 18–65 years (n = 15) who were using highly effective contraception, such as a nonhormonal intrauterine device, bilateral tubal occlusion, or sexual abstinence. A single dose of oral contraceptive (0.03 mg ethinyl estradiol (EE) and 3 mg drospirenone (DRSP)) was administered on days 1, 8, and 18, and ziritaxestat 600 mg once daily was administered from days 8 to 23. Co‐administration resulted in a 2.8‐fold and 2.4‐fold increase in EE maximum plasma concentration (Cmax) and area under the plasma drug concentration–time curve from time zero to infinity (AUC0–inf), respectively (day 18 vs. day 1). DRSP Cmax and AUC0–inf increased by 1.1‐fold and 1.2‐fold, respectively. DRSP is a CYP3A4 substrate, meaning increased EE exposure with ziritaxestat was not due to CYP3A4 inhibition. Ziritaxestat inhibition of EE glucuronidation and sulfation was quantified by liquid chromatography with tandem mass spectrometry in day 1 and day 18 plasma samples after EE conjugate hydrolysis. The ratio of EE AUC from time of administration up to the time of the last quantifiable concentration (AUClast) with/without hydrolysis by arylsulfatase was substantially lower on day 18 vs. day 1, suggesting ziritaxestat is a potent inhibitor of sulfation; EE glucuronidation was largely unaffected by ziritaxestat. In vitro assessment confirmed ziritaxestat is a potent inhibitor of sulfotransferase family 1E member 1 (half‐maximal inhibitory concentration < 0.8 μM). These findings highlight the importance of assessing enzymes other than CYP3A4 when investigating potential DDIs with oral contraceptives.
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Affiliation(s)
- Eric Helmer
- Galapagos NV, Mechelen, Belgium.,Exscientia, Oxford, UK
| | - Negin Karimian
- Galapagos NV, Mechelen, Belgium.,Biogen, Cambridge, MA, USA
| | | | - Ineke Seghers
- Galapagos NV, Mechelen, Belgium.,Argenx, Gent, Belgium
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Zhu H, Wang Y, Wang Q, Zhao S, Xu F, Hu Z, Zhou R, Huang S, Han L, Chen X. Polymorphisms contribute to differences in the effect of rocuronium in Chinese patients. Basic Clin Pharmacol Toxicol 2021; 130:141-150. [PMID: 34734679 DOI: 10.1111/bcpt.13682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/17/2021] [Accepted: 10/28/2021] [Indexed: 11/28/2022]
Abstract
Rocuronium is widely utilized in clinical general anaesthesia, and individual differences in pharmacology and clearance have been observed. Two hundred thirty-six Chinese patients undergoing selective thyroid/breast mass resection were studied. Total intravenous anaesthesia was induced with a single dose of propofol (2 mg·kg-1 ), sufentanil (0.5 μg·kg-1 ), and rocuronium (0.6 mg·kg-1 ) and maintained with propofol (3-5 mg·kg-1 ·h-1 ) and remifentanil (0.2-0.4 μg·kg-1 ·min-1 ). Intubation conditions and a train-of-four index of patients were utilized to assess the effects and duration of rocuronium. The data from 228 patients were analysed and reported. Genotypes NR1I2 rs2472677 C > T, NR1I2 rs6785049 G > A, SLCO1B1 rs4363657 T > C, SLCO1A2 rs4762699 T > C, and UGT1A1 rs4148323 G > A contributed to individual variation in rocuronium. Of the clinical variables tested, age, BMI, total dose of propofol, NR1I2 rs2472677, and SLCO1A2 rs4762699 correlated significantly (P < 0.05 for all) with the clinical duration or total clinical action time of rocuronium in a multiple linear regression model. No significant interactions were observed in intubation conditions. Genetic variations in NR1I2 rs2472677, NR1I2 rs6785049, SLCO1B1 rs4363657, SLCO1A2 rs4762699, and UGT1A1 rs4148323 were related to extensive interindividual variability in the clinical duration and total clinical action time of rocuronium.
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Affiliation(s)
- Hongyu Zhu
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yafeng Wang
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qi Wang
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuai Zhao
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Feng Xu
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhiqiang Hu
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ruihui Zhou
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shiqian Huang
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Linlin Han
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangdong Chen
- Department of Anaesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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10
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Hu DG, Mackenzie PI, Hulin JA, McKinnon RA, Meech R. Circular RNAs of UDP-Glycosyltransferase ( UGT) Genes Expand the Complexity and Diversity of the UGT Transcriptome. Mol Pharmacol 2021; 99:488-503. [PMID: 33824186 DOI: 10.1124/molpharm.120.000225] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 03/26/2021] [Indexed: 12/27/2022] Open
Abstract
The human UDP-glycosyltransferase (UGT) gene superfamily generates 22 canonical transcripts coding for functional enzymes and also produces nearly 150 variant UGT transcripts through alternative splicing and intergenic splicing. In the present study, our analysis of circRNA databases identified backsplicing events that predicted 85 circRNAs from UGT genes, with 33, 11, and 19 circRNAs from UGT1A, UGT2B4, UGT8, respectively. Most of these UGT circRNAs were reported by one database and had low abundance in cell- or tissue-specific contexts. Using reverse-transcriptase polymerase chain reaction with divergent primers and cDNA samples from human tissues and cell lines, we found 13 circRNAs from four UGT genes: UGT1A (three), UGT2B7 (one), UGT2B10 (one), and UGT8 (eight). Notably, all eight UGT8 circRNAs contain open reading frames that include the canonical start AUG codon and encode variant proteins that all have the common 274-amino acidN-terminal region of wild-type UGT8 protein. We further showed that one UGT8 circRNA (circ_UGT8-1) was broadly expressed in human tissues and cell lines, resistant to RNase R digestion, and predominately present in the cytoplasm. We cloned five UGT8 circRNAs into the Zinc finger with KRAB and SCAN domains 1 vector and transfected them into HEK293T cells. All these vectors produced both circRNAsand linear transcripts with varying circular/linear ratios (0.17-1.14).Western blotting and mass spectrometry assays revealed that only linear transcripts and not circRNAs were translated. In conclusion, our findings of nearly 100 circRNAs greatly expand the complexity and diversity of the UGT transcriptome; however, UGT circRNAs are expressed at a very low level in specific cellular contexts, and their biologic functions remain to be determined. SIGNIFICANCE STATEMENT: The human UGT gene transcriptome comprises 22 canonical transcripts coding for functional enzymes and approximately 150 alternatively spliced and chimeric variant transcripts. The present study identified nearly 100 circRNAs from UGT genes, thus greatly expanding the complexity and diversity of the UGT transcriptome. UGT circRNAs were expressed broadly in human tissues and cell lines; however, most showed very low abundance in tissue- and cell-specific contexts, and therefore their biological functions remain to be investigated.
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Affiliation(s)
- Dong Gui Hu
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University, College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Peter I Mackenzie
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University, College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Julie-Ann Hulin
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University, College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Ross A McKinnon
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University, College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Robyn Meech
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University, College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
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11
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Lei HP, Qin M, Cai LY, Wu H, Tang L, Liu JE, Deng CY, Liu YB, Zhu Q, Li HP, Hu W, Yang M, Zhu YZ, Zhong SL. UGT1A1 rs4148323 A Allele is Associated With Increased 2-Hydroxy Atorvastatin Formation and Higher Death Risk in Chinese Patients With Coronary Artery Disease. Front Pharmacol 2021; 12:586973. [PMID: 33762934 PMCID: PMC7982952 DOI: 10.3389/fphar.2021.586973] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 01/21/2021] [Indexed: 12/17/2022] Open
Abstract
It is widely accepted that genetic polymorphisms impact atorvastatin (ATV) metabolism, clinical efficacy, and adverse events. The objectives of this study were to identify novel genetic variants influencing ATV metabolism and outcomes in Chinese patients with coronary artery disease (CAD). A total of 1079 CAD patients were enrolled and followed for 5 years. DNA from the blood and human liver tissue samples were genotyped using either Global Screening Array-24 v1.0 BeadChip or HumanOmniZhongHua-8 BeadChip. Concentrations of ATV and its metabolites in plasma and liver samples were determined using a verified ultra-performance liquid chromatography mass spectrometry (UPLC-MS/MS) method. The patients carrying A allele for the rs4148323 polymorphism (UGT1A1) showed an increase in 2-hydroxy ATV/ATV ratio (p = 1.69E−07, false discovery rate [FDR] = 8.66E−03) relative to the value in individuals without the variant allele. The result was further validated by an independent cohort comprising an additional 222 CAD patients (p = 1.08E−07). Moreover, the rs4148323 A allele was associated with an increased risk of death (hazard ratio [HR] 1.774; 95% confidence interval [CI], 1.031–3.052; p = 0.0198). In conclusion, our results suggested that the UGT1A1 rs4148323 A allele was associated with increased 2-hydroxy ATV formation and was a significant death risk factor in Chinese patients with CAD.
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Affiliation(s)
- He-Ping Lei
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangzhou, China.,School of Pharmacy, Macau University of Science and Technology, Macau, China
| | - Min Qin
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangzhou, China.,School of Medicine, South China University of Technology, Guangzhou, China
| | - Li-Yun Cai
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangzhou, China.,School of Pharmacy, Southern Medical University, Guangzhou, China
| | - Hong Wu
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lan Tang
- School of Pharmacy, Southern Medical University, Guangzhou, China
| | - Ju-E Liu
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Chun-Yu Deng
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Yi-Bin Liu
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Qian Zhu
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Han-Ping Li
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Wei Hu
- School of Pharmacy, Macau University of Science and Technology, Macau, China
| | - Min Yang
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangzhou, China
| | - Yi-Zhun Zhu
- School of Pharmacy, Macau University of Science and Technology, Macau, China
| | - Shi-Long Zhong
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangzhou, China.,School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
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12
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Miyauchi Y, Kurohara K, Kimura A, Esaki M, Fujimoto K, Hirota Y, Takechi S, Mackenzie PI, Ishii Y, Tanaka Y. The carboxyl-terminal di-lysine motif is essential for catalytic activity of UDP-glucuronosyltransferase 1A9. Drug Metab Pharmacokinet 2020; 35:466-474. [PMID: 32883578 DOI: 10.1016/j.dmpk.2020.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/29/2020] [Accepted: 07/29/2020] [Indexed: 11/25/2022]
Abstract
UDP-Glucuronosyltransferase (UGT) is a type I membrane protein localized to the endoplasmic reticulum (ER). UGT has a di-lysine motif (KKXX/KXKXX) in its cytoplasmic domain, which is defined as an ER retention signal. However, our previous study has revealed that UGT2B7, one of the major UGT isoform in human, localizes to the ER in a manner that is independent of this motif. In this study, we focused on another UGT isoform, UGT1A9, and investigated the role of the di-lysine motif in its ER localization, glucuronidation activity, and homo-oligomer formation. Immunofluorescence microscopy indicated that the cytoplasmic domain of UGT1A9 functioned as an ER retention signal in a chimeric protein with CD4, but UGT1A9 itself could localize to the ER in a di-lysine motif-independent manner. In addition, UGT1A9 formed homo-oligomers in the absence of the motif. However, deletion of the di-lysine motif or substitution of lysines in the motif for alanines, severely impaired glucuronidation activity of UGT1A9. This is the first study that re-defines the cytoplasmic di-lysine motif of UGT as an essential peptide for retaining glucuronidation capacity.
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Affiliation(s)
- Yuu Miyauchi
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan; Laboratory of Hygienic Chemistry, Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan.
| | - Ken Kurohara
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Akane Kimura
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Madoka Esaki
- Laboratory of Hygienic Chemistry, Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan
| | - Keiko Fujimoto
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuko Hirota
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinji Takechi
- Laboratory of Hygienic Chemistry, Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan
| | - Peter I Mackenzie
- Clinical Pharmacology, College of Medicine and Public Health, Flinders Medical Centre and Flinders University, Adelaide, Australia
| | - Yuji Ishii
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan; Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan.
| | - Yoshitaka Tanaka
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
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13
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Fan S, Liu C, Jiang Y, Gao Y, Chen Y, Fu K, Yao X, Huang M, Bi H. Lignans from Schisandra sphenanthera protect against lithocholic acid-induced cholestasis by pregnane X receptor activation in mice. JOURNAL OF ETHNOPHARMACOLOGY 2019; 245:112103. [PMID: 31336134 DOI: 10.1016/j.jep.2019.112103] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/15/2019] [Accepted: 07/20/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cholestasis is a clinical syndrome caused by toxic bile acid retention that will lead to serious liver diseases. Ursodeoxycholic acid (UDCA) and obeticholic acid (OCA) are the only two FDA-approved drugs for its treatment. Thus, there is a clear need to develop new therapeutic approaches for cholestasis. Here, anti-cholestasis effects of the lignans from a traditional Chinese herbal medicine, Schisandra sphenanthera, were investigated as well as the involved mechanisms. MATERIALS AND METHODS Adult male C57BL/6J mice were randomly divided into 9 groups including the control group, LCA group, LCA with specific lignan treatment of Schisandrin A (SinA), Schisandrin B (SinB), Schisandrin C (SinC), Schisandrol A (SolA), Schisandrol B (SolB), Schisantherin A (StnA) and Schisantherin B (StnB), respectively. Mice were treated with each drug (qd) for 7 days, while the administration of lithocholic acid (LCA) (bid) was launched from the 4th day. Twelve hours after the last LCA injection, mice were sacrificed and samples were collected. Serum biochemical measurement and histological analysis were conducted. Metabolomics analysis of serum, liver, intestine and feces were performed to study the metabolic profile of bile acids. RT-qPCR and Western blot analysis were conducted to determine the hepatic expression of genes and proteins related to bile acid homeostasis. Dual-luciferase reporter gene assay was performed to investigate the transactivation effect of lignans on human pregnane X receptor (hPXR). RT-qPCR analysis was used to detect induction effects of lignans on hPXR-targeted genes in HepG2 cells. RESULTS Lignans including SinA, SinB, SinC, SolA, SolB, StnA, StnB were found to significantly protect against LCA-induced intrahepatic cholestasis, as evidenced by significant decrease in liver necrosis, serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) activity. More importantly, serum total bile acids (TBA) and total bilirubin (Tbili) were also significantly reduced. Metabolomics analysis revealed these lignans accelerated the metabolism of bile acids and increased the bile acid efflux from liver into the intestine or feces. Gene analysis revealed these lignans induced the hepatic expressions of PXR-target genes such as Cyp3a11 and Ugt1a1. Luciferase reporter gene assays illustrated that these bioactive lignans can activate hPXR. Additionally, they can all upregulate hPXR-regulate genes such as CYP3A4, UGT1A1 and OATP2. CONCLUSION These results clearly demonstrated the lignans from Schisandra sphenanthera exert hepatoprotective effects against LCA-induced cholestasis by activation of PXR. These lignans may provide an effective approach for the prevention and treatment of cholestatic liver injury.
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Affiliation(s)
- Shicheng Fan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Conghui Liu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yiming Jiang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yue Gao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yixin Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Kaili Fu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Xinpeng Yao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Min Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Huichang Bi
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China.
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14
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Establishment of the experimental procedure for prediction of conjugation capacity in mutant UGT1A1. PLoS One 2019; 14:e0225244. [PMID: 31730632 PMCID: PMC6857941 DOI: 10.1371/journal.pone.0225244] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 10/31/2019] [Indexed: 12/28/2022] Open
Abstract
UDP-glucuronosyltransferase 1A1 (UGT1A1) is an enzyme that is found in the endoplasmic reticulum membrane and can reportedly have a large number of amino acid substitutions that result in the reduction of glucuronidation capacity. For example, adverse drug reactions when patients receive CPT-11 (irinotecan) such as in cancer chemotherapy are caused by amino acid substitutions in UGT1A1. We previously found that the extent of the docking when the hydroxyl residue of bilirubin was oriented toward UDP-glucuronic acid correlated with in vitro conjugation capacity. In this study, we analyzed the conformation of mutant UGT1A1s by means of structural optimization with water and lipid bilayers instead of the optimization in vacuo that we used in our previous study. We then derived a mathematical model that can predict the conjugation capacities of mutant UGT1A1s by using results of substrate docking in silico and results of in vitro analysis of glucuronidation of acetaminophen and 17β-estradiol by UGT1A1s. This experimental procedure showed that the in silico conjugation capacities of other mutant UGT1A1s with bilirubin or SN-38 were similar to reported in vitro conjugation capacities. Our results suggest that this experimental procedure described herein can correctly predict the conjugation capacities of mutant UGT1A1s and any substrate.
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15
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Vaillancourt J, Turcotte V, Caron P, Villeneuve L, Lacombe L, Pouliot F, Lévesque É, Guillemette C. Glucuronidation of Abiraterone and Its Pharmacologically Active Metabolites by UGT1A4, Influence of Polymorphic Variants and Their Potential as Inhibitors of Steroid Glucuronidation. Drug Metab Dispos 2019; 48:75-84. [DOI: 10.1124/dmd.119.088229] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 11/08/2019] [Indexed: 11/22/2022] Open
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16
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Hu DG, Hulin JUA, Nair PC, Haines AZ, McKinnon RA, Mackenzie PI, Meech R. The UGTome: The expanding diversity of UDP glycosyltransferases and its impact on small molecule metabolism. Pharmacol Ther 2019; 204:107414. [PMID: 31647974 DOI: 10.1016/j.pharmthera.2019.107414] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 09/17/2019] [Indexed: 01/23/2023]
Abstract
The UDP glycosyltransferase (UGT) superfamily of enzymes is responsible for the metabolism and clearance of thousands of lipophilic chemicals including drugs, toxins and endogenous signaling molecules. They provide a protective interface between the organism and its chemical-rich environment, as well as controlling critical signaling pathways to maintain healthy tissue function. UGTs are associated with drug responses and interactions, as well as a wide range of diseases including cancer. The human genome contains 22 UGT genes; however as befitting their exceptionally diverse substrate ranges and biological activities, the output of these UGT genes is functionally diversified by multiple processes including alternative splicing, post-translational modification, homo- and hetero-oligomerization, and interactions with other proteins. All UGT genes are subject to extensive alternative splicing generating variant/truncated UGT proteins with altered functions including the capacity to dominantly modulate/inhibit cognate full-length forms. Heterotypic oligomerization of different UGTs can alter kinetic properties relative to monotypic complexes, and potentially produce novel substrate specificities. Moreover, the recently profiled interactions of UGTs with non-UGT proteins may facilitate coordination between different metabolic processes, as well as providing opportunities for UGTs to engage in novel 'moonlighting' functions. Herein we provide a detailed and comprehensive review of all known modes of UGT functional diversification and propose a UGTome model to describe the resulting expansion of metabolic capacity and its potential to modulate drug/xenobiotic responses and cell behaviours in normal and disease contexts.
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Affiliation(s)
- Dong Gui Hu
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - J Ulie-Ann Hulin
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Pramod C Nair
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Alex Z Haines
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Ross A McKinnon
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Peter I Mackenzie
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Robyn Meech
- Department of Clinical Pharmacology and Flinders Cancer Centre, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia.
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17
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Miyauchi Y, Kimura S, Kimura A, Kurohara K, Hirota Y, Fujimoto K, Mackenzie PI, Tanaka Y, Ishii Y. Investigation of the Endoplasmic Reticulum Localization of UDP-Glucuronosyltransferase 2B7 with Systematic Deletion Mutants. Mol Pharmacol 2019; 95:551-562. [PMID: 30944207 DOI: 10.1124/mol.118.113902] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 03/05/2019] [Indexed: 11/22/2022] Open
Abstract
UDP-Glucuronosyltransferase (UGT) plays an important role in the metabolism of endogenous and exogenous compounds. UGT is a type I membrane protein, and has a dilysine motif (KKXX/KXKXX) in its C-terminal cytoplasmic domain. Although a dilysine motif is defined as an endoplasmic reticulum (ER) retrieval signal, it remains a matter of debate whether this motif functions in the ER localization of UGT. To address this issue, we generated systematic deletion mutants of UGT2B7, a major human isoform, and compared their subcellular localizations with that of an ER marker protein calnexin (CNX), using subcellular fractionation and immunofluorescent microscopy. We found that although the dilysine motif functioned as the ER retention signal in a chimera that replaced the cytoplasmic domain of CD4 with that of UGT2B7, UGT2B7 truncated mutants lacking this motif extensively colocalized with CNX, indicating dilysine motif-independent ER retention of UGT2B7. Moreover, deletion of the C-terminal transmembrane and cytoplasmic domains did not affect ER localization of UGT2B7, suggesting that the signal necessary for ER retention of UGT2B7 is present in its luminal domain. Serial deletions of the luminal domain, however, did not affect the ER retention of the mutants. Further, a cytoplasmic and transmembrane domain-deleted mutant of UGT2B7 was localized to the ER without being secreted. These results suggest that UGT2B7 could localize to the ER without any retention signal, and lead to the conclusion that the static localization of UGT results from lack of a signal for export from the ER.
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Affiliation(s)
- Yuu Miyauchi
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences (Y.M., A.K., K.K., Y.H., K.F., Y.T.) and Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences (Y.M., S.K., Y.I.), Kyushu University, Fukuoka, Japan; and Department of Clinical Pharmacology, Flinders Medical Centre and Flinders University, Adelaide, South Australia, Australia (P.I.M.)
| | - Sora Kimura
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences (Y.M., A.K., K.K., Y.H., K.F., Y.T.) and Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences (Y.M., S.K., Y.I.), Kyushu University, Fukuoka, Japan; and Department of Clinical Pharmacology, Flinders Medical Centre and Flinders University, Adelaide, South Australia, Australia (P.I.M.)
| | - Akane Kimura
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences (Y.M., A.K., K.K., Y.H., K.F., Y.T.) and Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences (Y.M., S.K., Y.I.), Kyushu University, Fukuoka, Japan; and Department of Clinical Pharmacology, Flinders Medical Centre and Flinders University, Adelaide, South Australia, Australia (P.I.M.)
| | - Ken Kurohara
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences (Y.M., A.K., K.K., Y.H., K.F., Y.T.) and Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences (Y.M., S.K., Y.I.), Kyushu University, Fukuoka, Japan; and Department of Clinical Pharmacology, Flinders Medical Centre and Flinders University, Adelaide, South Australia, Australia (P.I.M.)
| | - Yuko Hirota
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences (Y.M., A.K., K.K., Y.H., K.F., Y.T.) and Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences (Y.M., S.K., Y.I.), Kyushu University, Fukuoka, Japan; and Department of Clinical Pharmacology, Flinders Medical Centre and Flinders University, Adelaide, South Australia, Australia (P.I.M.)
| | - Keiko Fujimoto
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences (Y.M., A.K., K.K., Y.H., K.F., Y.T.) and Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences (Y.M., S.K., Y.I.), Kyushu University, Fukuoka, Japan; and Department of Clinical Pharmacology, Flinders Medical Centre and Flinders University, Adelaide, South Australia, Australia (P.I.M.)
| | - Peter I Mackenzie
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences (Y.M., A.K., K.K., Y.H., K.F., Y.T.) and Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences (Y.M., S.K., Y.I.), Kyushu University, Fukuoka, Japan; and Department of Clinical Pharmacology, Flinders Medical Centre and Flinders University, Adelaide, South Australia, Australia (P.I.M.)
| | - Yoshitaka Tanaka
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences (Y.M., A.K., K.K., Y.H., K.F., Y.T.) and Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences (Y.M., S.K., Y.I.), Kyushu University, Fukuoka, Japan; and Department of Clinical Pharmacology, Flinders Medical Centre and Flinders University, Adelaide, South Australia, Australia (P.I.M.)
| | - Yuji Ishii
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences (Y.M., A.K., K.K., Y.H., K.F., Y.T.) and Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences (Y.M., S.K., Y.I.), Kyushu University, Fukuoka, Japan; and Department of Clinical Pharmacology, Flinders Medical Centre and Flinders University, Adelaide, South Australia, Australia (P.I.M.)
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18
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Meech R, Hu DG, McKinnon RA, Mubarokah SN, Haines AZ, Nair PC, Rowland A, Mackenzie PI. The UDP-Glycosyltransferase (UGT) Superfamily: New Members, New Functions, and Novel Paradigms. Physiol Rev 2019; 99:1153-1222. [DOI: 10.1152/physrev.00058.2017] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
UDP-glycosyltransferases (UGTs) catalyze the covalent addition of sugars to a broad range of lipophilic molecules. This biotransformation plays a critical role in elimination of a broad range of exogenous chemicals and by-products of endogenous metabolism, and also controls the levels and distribution of many endogenous signaling molecules. In mammals, the superfamily comprises four families: UGT1, UGT2, UGT3, and UGT8. UGT1 and UGT2 enzymes have important roles in pharmacology and toxicology including contributing to interindividual differences in drug disposition as well as to cancer risk. These UGTs are highly expressed in organs of detoxification (e.g., liver, kidney, intestine) and can be induced by pathways that sense demand for detoxification and for modulation of endobiotic signaling molecules. The functions of the UGT3 and UGT8 family enzymes have only been characterized relatively recently; these enzymes show different UDP-sugar preferences to that of UGT1 and UGT2 enzymes, and to date, their contributions to drug metabolism appear to be relatively minor. This review summarizes and provides critical analysis of the current state of research into all four families of UGT enzymes. Key areas discussed include the roles of UGTs in drug metabolism, cancer risk, and regulation of signaling, as well as the transcriptional and posttranscriptional control of UGT expression and function. The latter part of this review provides an in-depth analysis of the known and predicted functions of UGT3 and UGT8 enzymes, focused on their likely roles in modulation of levels of endogenous signaling pathways.
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Affiliation(s)
- Robyn Meech
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Dong Gui Hu
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Ross A. McKinnon
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Siti Nurul Mubarokah
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Alex Z. Haines
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Pramod C. Nair
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Andrew Rowland
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Peter I. Mackenzie
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
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Tang L, Zhang M, Li X, Zhang L. Glucuronidated bilirubin: Significantly increased in hepatic encephalopathy. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 162:363-376. [PMID: 30905463 DOI: 10.1016/bs.pmbts.2018.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
Bilirubin is produced by the breakdown of hemoglobin in senescent erythrocytes by macrophages and carried by albumin from blood circulation to the liver for removal in normal physiology. Glucuronic acid modification of bilirubin by UDP-glucuronyltransferase in the liver is the key event for its subsequent elimination from human body. Conditions that accelerate the breakdown of erythrocytes may cause an elevated blood level of unconjugated bilirubin whereas the factors affect the glucuronidated bilirubin formation and subsequent elimination may cause decreased or increased blood level of glucuronidated bilirubin, the water soluble "direct bilirubin" measured by clinical blood test. Studies showed that increased total serum bilirubin has a protective effect on cardiovascular and other related diseases, but it is unknown how direct bilirubin levels were related to different diseases. By taking advantage of the data collected in the clinical laboratory of our hospital, the direct bilirubin data from 192,535 patients with 72 clinically defined diseases were compared to that of healthy controls (10,497). Based on the mean, median, and p values, we found that patients with hepatic encephalopathy had the highest serum direct bilirubin level, which resembled acute hepatic encephalopathy caused by increased serum direct bilirubin level in neonates. In contrast, patients with uremia, nephrotic syndrome, and preeclampsia had significantly lower levels of serum direct bilirubin. Taken together, our data revealed that serum direct bilirubin levels were either increased or decreased in a disease-dependent manner. The possible molecular mechanisms of increased direct bilirubin levels in patients suffering hepatic encephalopathy are discussed.
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Affiliation(s)
- Limin Tang
- Department of Radiology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Meng Zhang
- Systems Biology and Medicine Center for Complex Diseases, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiulian Li
- Systems Biology and Medicine Center for Complex Diseases, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lijuan Zhang
- Systems Biology and Medicine Center for Complex Diseases, Affiliated Hospital of Qingdao University, Qingdao, China.
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20
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Uno Y, Takahira R, Murayama N, Onozeki S, Kawamura S, Uehara S, Ikenaka Y, Ishizuka M, Ikushiro S, Yamazaki H. Functional and molecular characterization of UDP-glucuronosyltransferase 2 family in cynomolgus macaques. Biochem Pharmacol 2019; 163:335-344. [PMID: 30836059 DOI: 10.1016/j.bcp.2019.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 03/01/2019] [Indexed: 11/17/2022]
Abstract
UDP-glucuronosyltransferases (UGTs) are essential enzymes metabolizing endogenous and exogenous chemicals. However, characteristics of UGTs have not been fully investigated in molecular levels of cynomolgus macaques, one of non-human primates widely used in preclinical drug metabolism studies. In this study, three UGT2A cDNAs (UGT2A1, 2A2, and 2A3) were isolated and characterized along with seven UGT2Bs previously identified in cynomolgus macaques. Several transcript variants were found in cynomolgus UGT2A1 and UGT2A2, like human orthologs. Cynomolgus UGT2A and UGT2B amino acid sequences were highly identical (87-96%) to their human counterparts. By phylogenetic analysis, all these cynomolgus UGT2s were more closely clustered with their human homologs than with dog, rat, or mouse UGT2s. Especially, UGT2As showed orthologous relationships between humans and cynomolgus macaques. All the cynomolgus UGT2 mRNAs were expressed in livers, jejunum, and/or kidneys abundantly, except that UGT2A1 and UGT2A2 mRNAs were predominantly expressed in nasal mucosa, like human UGT2s. UGT2A and UGT2B genes together form a gene cluster in the cynomolgus and human genome. Among the seven cynomolgus UGT2Bs heterologously expressed in yeast, UGT2B9 and UGT2B30 showed activities in estradiol 17-O-glucuronidation and morphine 3-O-glucuronidation but did not show activities in estradiol 3-O-glucuronidation, similar to human UGT2Bs. In liver microsomes, cynomolgus macaques showed higher estradiol 17-O-glucuronidase and morphine 3-O-glucuronidase activities than humans, suggesting functional activities of the responsible UGT2B enzymes in cynomolgus macaques. Therefore, cynomolgus UGT2s had overall molecular similarities to human UGT2s, but also showed some differences in UGT2B enzyme properties.
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Affiliation(s)
- Yasuhiro Uno
- Shin Nippon Biomedical Laboratories, Ltd., Kainan, Wakayama 642-0017, Japan.
| | - Rika Takahira
- Faculty of Engineering, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Norie Murayama
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
| | - Shunsuke Onozeki
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
| | - Shu Kawamura
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
| | - Shotaro Uehara
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
| | - Yoshinori Ikenaka
- Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Mayumi Ishizuka
- Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Shinichi Ikushiro
- Faculty of Engineering, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan.
| | - Hiroshi Yamazaki
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan.
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21
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Chattopadhyay N, Kanacher T, Casjens M, Frechen S, Ligges S, Zimmermann T, Rottmann A, Ploeger B, Höchel J, Schultze-Mosgau MH. CYP3A4-mediated effects of rifampicin on the pharmacokinetics of vilaprisan and its UGT1A1-mediated effects on bilirubin glucuronidation in humans. Br J Clin Pharmacol 2018; 84:2857-2866. [PMID: 30171692 DOI: 10.1111/bcp.13750] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 07/12/2018] [Accepted: 08/16/2018] [Indexed: 12/14/2022] Open
Abstract
AIMS The primary aim of the present study was to quantify the effects of rifampicin, a strong cytochrome P450 (CYP) 3A4 inducer, on the pharmacokinetics of the new selective progesterone receptor modulator, vilaprisan. In addition, the effects of rifampicin on the glucuronidation of bilirubin, an endogenous UDP-glucuronosyltransferase family 1 member A1 (UGT1A1) substrate, were explored. METHODS This was an open-label, two-period study in 12 healthy postmenopausal women. Subjects received a single oral dose of vilaprisan 4 mg in each period. In period 2, administration of vilaprisan was preceded and followed by rifampicin 600 mg day-1 . A subtherapeutic dose of midazolam (1 mg) was coadministered with vilaprisan to monitor CYP3A4 induction. Details of the administration and sampling schedule were optimized by means of a physiologically based pharmacokinetic model. Plasma concentrations of vilaprisan, midazolam, and 1'- hydroxy-midazolam were measured and rifampicin-associated changes in the glucuronidation of bilirubin were determined. RESULTS As predicted by our model, the coadministration of rifampicin was associated with a substantial decrease in exposure to vilaprisan and midazolam - indicated by the following point estimates (90% confidence intervals) for the area under the plasma concentration-time curve from zero to the time of the last quantifiable concentration ratio with or without rifampicin: 0.040 (0.0325, 0.0505) for vilaprisan and 0.144 (0.117, 0.178) for midazolam. Further, it was associated with an increase in bilirubin glucuronidation, indicating that UGT1A1 was induced. CONCLUSIONS The exposure to vilaprisan was reduced by 96%. Such a reduction is likely to render the drug therapeutically ineffective. Therefore, it is recommended that the use of strong CYP3A4 inducers is avoided when taking vilaprisan.
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Hu DG, Hulin JA, Wijayakumara DD, McKinnon RA, Mackenzie PI, Meech R. Intergenic Splicing between Four Adjacent UGT Genes (2B15, 2B29P2, 2B17, 2B29P1) Gives Rise to Variant UGT Proteins That Inhibit Glucuronidation via Protein-Protein Interactions. Mol Pharmacol 2018; 94:938-952. [DOI: 10.1124/mol.118.111773] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 06/08/2018] [Indexed: 01/12/2023] Open
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23
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Rong Y, Meng Z, Li J, Zhu X, Gan H, Gu R, Wu Z, Sun W, Liu T, Zheng Y, Jin M, Peng J, Wang X, Dou G. Application of ultra high-performance liquid chromatography tandem mass spectrometry to investigate the regioselective glucuronidation of icaritin in vitro. J Pharm Biomed Anal 2018; 154:444-453. [DOI: 10.1016/j.jpba.2018.02.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 02/09/2018] [Accepted: 02/12/2018] [Indexed: 01/24/2023]
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24
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Verma SS, Josyula N, Verma A, Zhang X, Veturi Y, Dewey FE, Hartzel DN, Lavage DR, Leader J, Ritchie MD, Pendergrass SA. Rare variants in drug target genes contributing to complex diseases, phenome-wide. Sci Rep 2018; 8:4624. [PMID: 29545597 PMCID: PMC5854600 DOI: 10.1038/s41598-018-22834-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 03/01/2018] [Indexed: 12/30/2022] Open
Abstract
The DrugBank database consists of ~800 genes that are well characterized drug targets. This list of genes is a useful resource for association testing. For example, loss of function (LOF) genetic variation has the potential to mimic the effect of drugs, and high impact variation in these genes can impact downstream traits. Identifying novel associations between genetic variation in these genes and a range of diseases can also uncover new uses for the drugs that target these genes. Phenome Wide Association Studies (PheWAS) have been successful in identifying genetic associations across hundreds of thousands of diseases. We have conducted a novel gene based PheWAS to test the effect of rare variants in DrugBank genes, evaluating associations between these genes and more than 500 quantitative and dichotomous phenotypes. We used whole exome sequencing data from 38,568 samples in Geisinger MyCode Community Health Initiative. We evaluated the results of this study when binning rare variants using various filters based on potential functional impact. We identified multiple novel associations, and the majority of the significant associations were driven by functionally annotated variation. Overall, this study provides a sweeping exploration of rare variant associations within functionally relevant genes across a wide range of diagnoses.
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Affiliation(s)
- Shefali Setia Verma
- Perelman School of Medicine, Department of Genetics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Navya Josyula
- Biomedical and Translational Informatics Institute, Geisinger, Danville, PA, 17221, USA
| | - Anurag Verma
- Perelman School of Medicine, Department of Genetics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Xinyuan Zhang
- Perelman School of Medicine, Department of Genetics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Yogasudha Veturi
- Perelman School of Medicine, Department of Genetics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | | | - Dustin N Hartzel
- Phenomic Analytics and Clinical Data Core, Geisinger, Danville, PA, USA
| | - Daniel R Lavage
- Phenomic Analytics and Clinical Data Core, Geisinger, Danville, PA, USA
| | - Joe Leader
- Biomedical and Translational Informatics Institute, Geisinger, Danville, PA, 17221, USA.,Phenomic Analytics and Clinical Data Core, Geisinger, Danville, PA, USA
| | - Marylyn D Ritchie
- Perelman School of Medicine, Department of Genetics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Sarah A Pendergrass
- Biomedical and Translational Informatics Institute, Geisinger, Danville, PA, 17221, USA.
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25
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Audet-Delage Y, Rouleau M, Rouleau M, Roberge J, Miard S, Picard F, Têtu B, Guillemette C. Cross-Talk between Alternatively Spliced UGT1A Isoforms and Colon Cancer Cell Metabolism. Mol Pharmacol 2017; 91:167-177. [PMID: 28049773 DOI: 10.1124/mol.116.106161] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 12/29/2016] [Indexed: 12/16/2023] Open
Abstract
Alternative splicing at the human glucuronosyltransferase 1 gene locus (UGT1) produces alternate isoforms UGT1A_i2s that control glucuronidation activity through protein-protein interactions. Here, we hypothesized that UGT1A_i2s function as a complex protein network connecting other metabolic pathways with an influence on cancer cell metabolism. This is based on a pathway enrichment analysis of proteomic data that identified several high-confidence candidate interaction proteins of UGT1A_i2 proteins in human tissues-namely, the rate-limiting enzyme of glycolysis pyruvate kinase (PKM), which plays a critical role in cancer cell metabolism and tumor growth. The partnership of UGT1A_i2 and PKM2 was confirmed by coimmunoprecipitation in the HT115 colon cancer cells and was supported by a partial colocalization of these two proteins. In support of a functional role for this partnership, depletion of UGT1A_i2 proteins in HT115 cells enforced the Warburg effect, with a higher glycolytic rate at the expense of mitochondrial respiration, and led to lactate accumulation. Untargeted metabolomics further revealed a significantly altered cellular content of 58 metabolites, including many intermediates derived from the glycolysis and tricarboxylic acid cycle pathways. These metabolic changes were associated with a greater migration potential. The potential relevance of our observations is supported by the down-regulation of UGT1A_i2 mRNA in colon tumors compared with normal tissues. Alternate UGT1A variants may thus be part of the expanding compendium of metabolic pathways involved in cancer biology directly contributing to the oncogenic phenotype of colon cancer cells. Findings uncover new aspects of UGT functions diverging from their transferase activity.
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Affiliation(s)
- Yannick Audet-Delage
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec Research Center and Faculty of Pharmacy (Y.A.-D., Mi.R., Me.R., J.R., C.G.), Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (S.M., F.P.), and Centre Hospitalier Universitaire de Québec Research Center and Faculty of Medicine (B.T.), Laval University, Québec, Canada
| | - Michèle Rouleau
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec Research Center and Faculty of Pharmacy (Y.A.-D., Mi.R., Me.R., J.R., C.G.), Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (S.M., F.P.), and Centre Hospitalier Universitaire de Québec Research Center and Faculty of Medicine (B.T.), Laval University, Québec, Canada
| | - Mélanie Rouleau
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec Research Center and Faculty of Pharmacy (Y.A.-D., Mi.R., Me.R., J.R., C.G.), Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (S.M., F.P.), and Centre Hospitalier Universitaire de Québec Research Center and Faculty of Medicine (B.T.), Laval University, Québec, Canada
| | - Joannie Roberge
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec Research Center and Faculty of Pharmacy (Y.A.-D., Mi.R., Me.R., J.R., C.G.), Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (S.M., F.P.), and Centre Hospitalier Universitaire de Québec Research Center and Faculty of Medicine (B.T.), Laval University, Québec, Canada
| | - Stéphanie Miard
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec Research Center and Faculty of Pharmacy (Y.A.-D., Mi.R., Me.R., J.R., C.G.), Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (S.M., F.P.), and Centre Hospitalier Universitaire de Québec Research Center and Faculty of Medicine (B.T.), Laval University, Québec, Canada
| | - Frédéric Picard
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec Research Center and Faculty of Pharmacy (Y.A.-D., Mi.R., Me.R., J.R., C.G.), Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (S.M., F.P.), and Centre Hospitalier Universitaire de Québec Research Center and Faculty of Medicine (B.T.), Laval University, Québec, Canada
| | - Bernard Têtu
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec Research Center and Faculty of Pharmacy (Y.A.-D., Mi.R., Me.R., J.R., C.G.), Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (S.M., F.P.), and Centre Hospitalier Universitaire de Québec Research Center and Faculty of Medicine (B.T.), Laval University, Québec, Canada
| | - Chantal Guillemette
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec Research Center and Faculty of Pharmacy (Y.A.-D., Mi.R., Me.R., J.R., C.G.), Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (S.M., F.P.), and Centre Hospitalier Universitaire de Québec Research Center and Faculty of Medicine (B.T.), Laval University, Québec, Canada
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Fujiwara R, Yokoi T, Nakajima M. Structure and Protein-Protein Interactions of Human UDP-Glucuronosyltransferases. Front Pharmacol 2016; 7:388. [PMID: 27822186 PMCID: PMC5075577 DOI: 10.3389/fphar.2016.00388] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 10/05/2016] [Indexed: 12/11/2022] Open
Abstract
Mammalian UDP-glucuronosyltransferases (UGTs) catalyze the transfer of glucuronic acid from UDP-glucuronic acid to various xenobiotics and endobiotics. Since UGTs comprise rate-limiting enzymes for metabolism of various compounds, co-administration of UGT-inhibiting drugs and genetic deficiency of UGT genes can cause an increased blood concentration of these compounds. During the last few decades, extensive efforts have been made to advance the understanding of gene structure, function, substrate specificity, and inhibition/induction properties of UGTs. However, molecular mechanisms and physiological importance of the oligomerization and protein–protein interactions of UGTs are still largely unknown. While three-dimensional structures of human UGTs can be useful to reveal the details of oligomerization and protein–protein interactions of UGTs, little is known about the protein structures of human UGTs due to the difficulty in solving crystal structures of membrane-bound proteins. Meanwhile, soluble forms of plant and bacterial UGTs as well as a partial domain of human UGT2B7 have been crystallized and enabled us to predict three-dimensional structures of human UGTs using a homology-modeling technique. The homology-modeled structures of human UGTs do not only provide the detailed information about substrate binding or substrate specificity in human UGTs, but also contribute with unique knowledge on oligomerization and protein–protein interactions of UGTs. Furthermore, various in vitro approaches indicate that UGT-mediated glucuronidation is involved in cell death, apoptosis, and oxidative stress as well. In the present review article, recent understandings of UGT protein structures as well as physiological importance of the oligomerization and protein–protein interactions of human UGTs are discussed.
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Affiliation(s)
- Ryoichi Fujiwara
- Department of Pharmaceutics, School of Pharmacy, Kitasato University Tokyo, Japan
| | - Tsuyoshi Yokoi
- Department of Drug Safety Sciences, Division of Clinical Pharmacology, Nagoya University Graduate School of Medicine Nagoya, Japan
| | - Miki Nakajima
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University Kanazawa, Japan
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Dimerization of human uridine diphosphate glucuronosyltransferase allozymes 1A1 and 1A9 alters their quercetin glucuronidation activities. Sci Rep 2016; 6:23763. [PMID: 27025983 PMCID: PMC4837415 DOI: 10.1038/srep23763] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 02/26/2016] [Indexed: 11/08/2022] Open
Abstract
Uridine diphosphate glucuronosyltransferase 1A (UGT1A) is a major phase II drug-metabolism enzyme superfamily involved in the glucuronidation of endobiotics and xenobiotics in humans. Many polymorphisms in UGT1A genes are reported to inhibit or decrease UGT1A activity. In this study, two UGT1A1 allozymes, UGT1A1 wild-type and a splice mutant, as well as UGT1A9 wild-type and its three UGT1A9 allozymes, UGT1A9*2(C3Y), UGT1A9*3(M33T), and UGT1A9*5(D256N) were single- or double-expressed in a Bac-to-Bac expression system. Dimerization of UGT1A1 or UGT1A9 allozymes was observed via fluorescence resonance energy transfer (FRET) and co-immunoprecipitation analysis. SNPs of UGT1A altered the ability of protein-protein interaction, resulting in differential FRET efficiencies and donor-acceptor r distances. Dimerization changed the chemical regioselectivity, substrate-binding affinity, and enzymatic activity of UGT1A1 and UGT1A9 in glucuronidation of quercetin. These findings provide molecular insights into the consequences of homozygous and heterozygous UGT1A1 and UGT1A9 allozymes expression on quercetin glucuronidation.
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Zeng H, Li D, Qin X, Chen P, Tan H, Zeng X, Li X, Fan X, Jiang Y, Zhou Y, Chen Y, Wang Y, Huang M, Bi H. Hepatoprotective Effects of Schisandra sphenanthera Extract against Lithocholic Acid-Induced Cholestasis in Male Mice Are Associated with Activation of the Pregnane X Receptor Pathway and Promotion of Liver Regeneration. Drug Metab Dispos 2015; 44:337-42. [DOI: 10.1124/dmd.115.066969] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 11/16/2015] [Indexed: 12/20/2022] Open
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29
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Rodrigues C, Santos-Silva A, Costa E, Bronze-da-Rocha E. Performance of In Silico Tools for the Evaluation of UGT1A1 Missense Variants. Hum Mutat 2015; 36:1215-25. [PMID: 26377032 DOI: 10.1002/humu.22903] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 08/31/2015] [Indexed: 01/17/2023]
Abstract
Variations in the gene encoding uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) are particularly important because they have been associated with hyperbilirubinemia in Gilbert's and Crigler-Najjar syndromes as well as with changes in drug metabolism. Several variants associated with these phenotypes are nonsynonymous single-nucleotide polymorphisms (nsSNPs). Bioinformatics approaches have gained increasing importance in predicting the functional significance of these variants. This study was focused on the predictive ability of bioinformatics approaches to determine the pathogenicity of human UGT1A1 nsSNPs, which were previously characterized at the protein level by in vivo and in vitro studies. Using 16 Web algorithms, we evaluated 48 nsSNPs described in the literature and databases. Eight of these algorithms reached or exceeded 90% sensitivity and six presented a Matthews correlation coefficient above 0.46. The best-performing method was MutPred, followed by Sorting Intolerant from Tolerant (SIFT). The prediction measures varied significantly when predictors such us SIFT, polyphen-2, and Prediction of Pathological Mutations on Proteins were run with their native alignment generated by the tool, or with an input alignment that was strictly built with UGT1A1 orthologs and manually curated. Our results showed that the prediction performance of some methods based on sequence conservation analysis can be negatively affected when nsSNPs are positioned at the hypervariable or constant regions of UGT1A1 ortholog sequences.
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Affiliation(s)
- Carina Rodrigues
- UCIBIO/REQUIMTE, Laboratório de Bioquímica, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal.,Escola Superior de Saúde, Instituto Politécnico de Bragança, Bragança, Portugal
| | - Alice Santos-Silva
- UCIBIO/REQUIMTE, Laboratório de Bioquímica, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Elísio Costa
- UCIBIO/REQUIMTE, Laboratório de Bioquímica, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Elsa Bronze-da-Rocha
- UCIBIO/REQUIMTE, Laboratório de Bioquímica, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
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Chornokur G, Lin HY, Tyrer JP, Lawrenson K, Dennis J, Amankwah EK, Qu X, Tsai YY, Jim HSL, Chen Z, Chen AY, Permuth-Wey J, Aben KKH, Anton-Culver H, Antonenkova N, Bruinsma F, Bandera EV, Bean YT, Beckmann MW, Bisogna M, Bjorge L, Bogdanova N, Brinton LA, Brooks-Wilson A, Bunker CH, Butzow R, Campbell IG, Carty K, Chang-Claude J, Cook LS, Cramer DW, Cunningham JM, Cybulski C, Dansonka-Mieszkowska A, du Bois A, Despierre E, Dicks E, Doherty JA, Dörk T, Dürst M, Easton DF, Eccles DM, Edwards RP, Ekici AB, Fasching PA, Fridley BL, Gao YT, Gentry-Maharaj A, Giles GG, Glasspool R, Goodman MT, Gronwald J, Harrington P, Harter P, Hein A, Heitz F, Hildebrandt MAT, Hillemanns P, Hogdall CK, Hogdall E, Hosono S, Jakubowska A, Jensen A, Ji BT, Karlan BY, Kelemen LE, Kellar M, Kiemeney LA, Krakstad C, Kjaer SK, Kupryjanczyk J, Lambrechts D, Lambrechts S, Le ND, Lee AW, Lele S, Leminen A, Lester J, Levine DA, Liang D, Lim BK, Lissowska J, Lu K, Lubinski J, Lundvall L, Massuger LFAG, Matsuo K, McGuire V, McLaughlin JR, McNeish I, Menon U, Milne RL, Modugno F, Moysich KB, Ness RB, Nevanlinna H, Eilber U, Odunsi K, Olson SH, Orlow I, Orsulic S, Weber RP, Paul J, Pearce CL, Pejovic T, Pelttari LM, Pike MC, Poole EM, Risch HA, Rosen B, Rossing MA, Rothstein JH, Rudolph A, Runnebaum IB, Rzepecka IK, Salvesen HB, Schernhammer E, Schwaab I, Shu XO, Shvetsov YB, Siddiqui N, Sieh W, Song H, Southey MC, Spiewankiewicz B, Sucheston L, Teo SH, Terry KL, Thompson PJ, Thomsen L, Tangen IL, Tworoger SS, van Altena AM, Vierkant RA, Vergote I, Walsh CS, Wang-Gohrke S, Wentzensen N, Whittemore AS, Wicklund KG, Wilkens LR, Wu AH, Wu X, Woo YL, Yang H, Zheng W, Ziogas A, Hasmad HN, Berchuck A, Iversen ES, Schildkraut JM, Ramus SJ, Goode EL, Monteiro ANA, Gayther SA, Narod SA, Pharoah PDP, Sellers TA, Phelan CM. Common Genetic Variation In Cellular Transport Genes and Epithelial Ovarian Cancer (EOC) Risk. PLoS One 2015; 10:e0128106. [PMID: 26091520 PMCID: PMC4474865 DOI: 10.1371/journal.pone.0128106] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 04/22/2015] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Defective cellular transport processes can lead to aberrant accumulation of trace elements, iron, small molecules and hormones in the cell, which in turn may promote the formation of reactive oxygen species, promoting DNA damage and aberrant expression of key regulatory cancer genes. As DNA damage and uncontrolled proliferation are hallmarks of cancer, including epithelial ovarian cancer (EOC), we hypothesized that inherited variation in the cellular transport genes contributes to EOC risk. METHODS In total, DNA samples were obtained from 14,525 case subjects with invasive EOC and from 23,447 controls from 43 sites in the Ovarian Cancer Association Consortium (OCAC). Two hundred seventy nine SNPs, representing 131 genes, were genotyped using an Illumina Infinium iSelect BeadChip as part of the Collaborative Oncological Gene-environment Study (COGS). SNP analyses were conducted using unconditional logistic regression under a log-additive model, and the FDR q<0.2 was applied to adjust for multiple comparisons. RESULTS The most significant evidence of an association for all invasive cancers combined and for the serous subtype was observed for SNP rs17216603 in the iron transporter gene HEPH (invasive: OR = 0.85, P = 0.00026; serous: OR = 0.81, P = 0.00020); this SNP was also associated with the borderline/low malignant potential (LMP) tumors (P = 0.021). Other genes significantly associated with EOC histological subtypes (p<0.05) included the UGT1A (endometrioid), SLC25A45 (mucinous), SLC39A11 (low malignant potential), and SERPINA7 (clear cell carcinoma). In addition, 1785 SNPs in six genes (HEPH, MGST1, SERPINA, SLC25A45, SLC39A11 and UGT1A) were imputed from the 1000 Genomes Project and examined for association with INV EOC in white-European subjects. The most significant imputed SNP was rs117729793 in SLC39A11 (per allele, OR = 2.55, 95% CI = 1.5-4.35, p = 5.66x10-4). CONCLUSION These results, generated on a large cohort of women, revealed associations between inherited cellular transport gene variants and risk of EOC histologic subtypes.
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Affiliation(s)
- Ganna Chornokur
- Division of Population Sciences, Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Hui-Yi Lin
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Jonathan P. Tyrer
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Cambridge, UK
| | - Kate Lawrenson
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California, United States of America
| | - Joe Dennis
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Cambridge, UK
| | - Ernest K. Amankwah
- Division of Population Sciences, Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Florida, United States of America
- Clinical and Translational Research Organization, All Children’s Hospital Johns Hopkins Medicine, St Petersburg, Florida, United States of America
| | - Xiaotao Qu
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Ya-Yu Tsai
- Division of Population Sciences, Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Heather S. L. Jim
- Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Zhihua Chen
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Ann Y. Chen
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Jennifer Permuth-Wey
- Division of Population Sciences, Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Katja KH. Aben
- Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
- Comprehensive Cancer Center The Netherlands, Nijmegen, The Netherlands
| | - Hoda Anton-Culver
- Genetic Epidemiology Research Institute, Center for Cancer Genetics Research and Prevention, University of California Irvine, Irvine, California, United States of America
| | | | - Fiona Bruinsma
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
| | - Elisa V. Bandera
- Cancer Prevention and Control Program, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, United States of America
| | - Yukie T. Bean
- Department of Obstetrics & Gynecology, Oregon Health & Science University, Portland, Oregon, United States of America
- Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Matthias W. Beckmann
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen-Nuremberg Comprehensive Cancer Center, Erlangen EMN, Erlangen, Germany
| | - Maria Bisogna
- Gynecology Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Line Bjorge
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Centre for Cancer Biomarkers, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Natalia Bogdanova
- Radiation Oncology Research Unit, Hannover Medical School, Hannover, Germany
| | - Louise A. Brinton
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Angela Brooks-Wilson
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, Canada
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, Canada
| | - Clareann H. Bunker
- Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, United States of America
| | - Ralf Butzow
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Central Hospital, Helsinki, HUS, Finland
- Department of Pathology, Helsinki University Central Hospital, Helsinki, Finland
| | - Ian G. Campbell
- Cancer Genetics Laboratory Research Division, Peter MacCallum Cancer Centre, St Andrews Place, East Melbourne, Australia
- Department of Pathology, the University of Melbourne, Parkville, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
| | - Karen Carty
- Department of Gynaecological Oncology, Glasgow Royal Infirmary, Glasgow, United Kingdom
- The Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom
| | - Jenny Chang-Claude
- German Cancer Research Center (DKFZ), Division of Cancer Epidemiology, Heidelberg, Germany
| | - Linda S. Cook
- Division of Epidemiology and Biostatistics, Department of Internal Medicine, University of New Mexico, Albuquerque, New Mexico, United States of America
| | - Daniel W. Cramer
- Obstetrics and Gynecology Center, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Julie M. Cunningham
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Cezary Cybulski
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | | | - Andreas du Bois
- Department of Gynaecology and Gynaecologic Oncology, Kliniken Essen-Mitte/ Evang. Huyssens-Stiftung/ Knappschaft GmbH, Essen, Germany
- Department of Gynaecology and Gynaecologic Oncology, Dr. Horst Schmidt Kliniken Wiesbaden, Wiesbaden, Germany
| | - Evelyn Despierre
- Division of Gynecologic Oncology, Department of Obstetrics and Gynaecology and Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Ed Dicks
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Cambridge, UK
| | - Jennifer A. Doherty
- Department of Epidemiology, The Geisel School of Medicine Hanover, New Hampshire, United States of America
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, Washington, United States of America
| | - Thilo Dörk
- Gynaecology Research Unit, Hannover Medical School, Hannover, Germany
| | - Matthias Dürst
- Department of Gynecology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Douglas F. Easton
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California, United States of America
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - Diana M. Eccles
- Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Robert P. Edwards
- Ovarian Cancer Center of Excellence, Womens Cancer Research Program, Magee-Womens Research Institute and University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania, United States of America
| | - Arif B. Ekici
- Institute of Human Genetics, Friedrich-Alexander-University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-Nuremberg, Erlangen, Germany
| | - Peter A. Fasching
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen-Nuremberg Comprehensive Cancer Center, Erlangen EMN, Erlangen, Germany
- University of California at Los Angeles, David Geffen School of Medicine, Department of Medicine, Division of Hematology and Oncology, Los Angeles, California, United States of America
| | - Brooke L. Fridley
- Biostatistics and Informatics Shared Resource, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Yu-Tang Gao
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, China
| | | | - Graham G. Giles
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
- Centre for Epidemiology and Biostatistics, School of Population and Global Health, The University of Melbourne, Melbourne, Australia
| | | | - Marc T. Goodman
- Cancer Prevention and Control, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
- Community and Population Health Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
| | - Jacek Gronwald
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Patricia Harrington
- Department of Oncology, The Centre for Cancer Epidemiology, University of Cambridge, Strangeways Research Laboratory, Cambridge, United Kingdom
| | - Philipp Harter
- Department of Gynaecology and Gynaecologic Oncology, Kliniken Essen-Mitte/ Evang. Huyssens-Stiftung/ Knappschaft GmbH, Essen, Germany
- Department of Gynaecology and Gynaecologic Oncology, Dr. Horst Schmidt Kliniken Wiesbaden, Wiesbaden, Germany
| | - Alexander Hein
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen-Nuremberg Comprehensive Cancer Center, Erlangen EMN, Erlangen, Germany
| | - Florian Heitz
- Department of Gynaecology and Gynaecologic Oncology, Kliniken Essen-Mitte/ Evang. Huyssens-Stiftung/ Knappschaft GmbH, Essen, Germany
- Department of Gynaecology and Gynaecologic Oncology, Dr. Horst Schmidt Kliniken Wiesbaden, Wiesbaden, Germany
| | - Michelle A. T. Hildebrandt
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Peter Hillemanns
- Gynaecology Research Unit, Hannover Medical School, Hannover, Germany
| | - Claus K. Hogdall
- The Juliane Marie Centre, Department of Gynecology, Righospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Estrid Hogdall
- Molecular Unit, Department of Pathology, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Satoyo Hosono
- Department of Preventive Medicine, Kyushu University Faculty of Medical Science, Nagoya, Aichi, Japan
| | - Anna Jakubowska
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Allan Jensen
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Bu-Tian Ji
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Beth Y. Karlan
- Women's Cancer Program at the Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
| | - Linda E. Kelemen
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Mellissa Kellar
- Department of Obstetrics & Gynecology, Oregon Health & Science University, Portland, Oregon, United States of America
- Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Lambertus A. Kiemeney
- Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
| | - Camilla Krakstad
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Centre for Cancer Biomarkers, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Susanne K. Kjaer
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
- Department of Gynaecology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Jolanta Kupryjanczyk
- Department of Pathology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Diether Lambrechts
- Vesalius Research Center, VIB, Leuven, Belgium
- Laboratory for Translational Genetics, Department of Oncology, University of Leuven, Belgium
| | - Sandrina Lambrechts
- Division of Gynecologic Oncology, Department of Obstetrics and Gynaecology and Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Nhu D. Le
- Cancer Control Research, BC Cancer Agency, Vancouver, Canada
| | - Alice W. Lee
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California, United States of America
| | - Shashi Lele
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, New York, United States of America
| | - Arto Leminen
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Central Hospital, Helsinki, HUS, Finland
| | - Jenny Lester
- Women's Cancer Program at the Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
| | - Douglas A. Levine
- Gynecology Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Dong Liang
- College of Pharmacy and Health Sciences, Texas Southern University, Houston, Texas, United States of America
| | - Boon Kiong Lim
- Department of Obstetrics and Gynaecology, University Malaya Medical Centre, University Malaya, Kuala Lumpur, Malaysia
| | - Jolanta Lissowska
- Department of Cancer Epidemiology and Prevention, M. Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Karen Lu
- Department of Gynecologic Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Jan Lubinski
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Lene Lundvall
- The Juliane Marie Centre, Department of Gynecology, Righospitalet, University of Copenhagen, Copenhagen, Denmark
| | | | - Keitaro Matsuo
- Department of Preventive Medicine, Kyushu University Faculty of Medical Science, Nagoya, Aichi, Japan
| | - Valerie McGuire
- Department of Health Research and Policy—Epidemiology, Stanford University School of Medicine, Stanford, California, United States of America
| | | | - Iain McNeish
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer research Centre, Beatson Institute for Cancer Research, Glasgow, UK
| | - Usha Menon
- Women's Cancer, Institute for Women's Health, University College London, London, United Kingdom
| | - Roger L. Milne
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
| | - Francesmary Modugno
- Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, United States of America
- Women's Cancer Research Program, Magee-Women's Research Institute and University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania, United States of America
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Kirsten B. Moysich
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, New York, United States of America
| | - Roberta B. Ness
- The University of Texas School of Public Health, Houston, Texas, United States of America
| | - Heli Nevanlinna
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Central Hospital, Helsinki, HUS, Finland
| | - Ursula Eilber
- German Cancer Research Center (DKFZ), Division of Cancer Epidemiology, Heidelberg, Germany
| | - Kunle Odunsi
- Department of Gynecologic Oncology, Roswell Park Cancer Institute, Buffalo, New York, United States of America
| | - Sara H. Olson
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Irene Orlow
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Sandra Orsulic
- Women's Cancer Program at the Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
| | - Rachel Palmieri Weber
- Department of Community and Family Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - James Paul
- The Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom
| | - Celeste L. Pearce
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California, United States of America
- Department of Epidemiology, University of Michigan School of Public Health,Ann Arbor, Michigan, United States of America
| | - Tanja Pejovic
- Department of Obstetrics & Gynecology, Oregon Health & Science University, Portland, Oregon, United States of America
- Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Liisa M. Pelttari
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Central Hospital, Helsinki, HUS, Finland
| | - Malcolm C. Pike
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California, United States of America
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Elizabeth M. Poole
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Harvey A. Risch
- Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, Connecticut, United States of America
| | - Barry Rosen
- Department of Gynecology-Oncology, Princess Margaret Hospital, and Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Mary Anne Rossing
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, Washington, United States of America
| | - Joseph H. Rothstein
- Department of Health Research and Policy- Epidemiology, Stanford University School of Medicine, Stanford, California, United States of America
| | - Anja Rudolph
- German Cancer Research Center (DKFZ), Division of Cancer Epidemiology, Heidelberg, Germany
| | - Ingo B. Runnebaum
- Department of Gynecology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Iwona K. Rzepecka
- Department of Pathology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Helga B. Salvesen
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Centre for Cancer Biomarkers, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Eva Schernhammer
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Ira Schwaab
- Institut für Humangenetik, Wiesbaden, Germany
| | - Xiao-Ou Shu
- Epidemiology Center and Vanderbilt, Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Yurii B. Shvetsov
- Cancer Epidemiology Program, University of Hawaii Cancer Center, Hawaii, United States of America
| | - Nadeem Siddiqui
- Department of Gynaecological Oncology, Glasgow Royal Infirmary, Glasgow, United Kingdom
| | - Weiva Sieh
- Department of Health Research and Policy- Epidemiology, Stanford University School of Medicine, Stanford, California, United States of America
| | - Honglin Song
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Cambridge, UK
| | - Melissa C. Southey
- Department of Pathology, the University of Melbourne, Parkville, Australia
| | - Beata Spiewankiewicz
- Department of Gynecologic Oncology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Lara Sucheston
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, New York, United States of America
| | - Soo-Hwang Teo
- Cancer Research Initiatives Foundation, Sime Darby Medical Center, Subang Jaya, Malaysia
- University Malaya Cancer Research Institute, University Malaya Medical Centre, University Malaya, Kuala Lumpur, Maylaysia
| | - Kathryn L. Terry
- Obstetrics and Gynecology Center, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Pamela J. Thompson
- Cancer Prevention and Control, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
- Community and Population Health Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
| | - Lotte Thomsen
- Department of Pathology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Ingvild L. Tangen
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Centre for Cancer Biomarkers, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Shelley S. Tworoger
- Obstetrics and Gynecology Center, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Anne M. van Altena
- Department of Gynaecology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Robert A. Vierkant
- Department of Health Science Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Ignace Vergote
- Division of Gynecologic Oncology, Department of Obstetrics and Gynaecology and Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Christine S. Walsh
- Women's Cancer Program at the Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
| | - Shan Wang-Gohrke
- German Cancer Research Center (DKFZ), Division of Cancer Epidemiology, Heidelberg, Germany
| | - Nicolas Wentzensen
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Alice S. Whittemore
- Department of Health Research and Policy- Epidemiology, Stanford University School of Medicine, Stanford, California, United States of America
| | - Kristine G. Wicklund
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, Washington, United States of America
| | - Lynne R. Wilkens
- Cancer Epidemiology Program, University of Hawaii Cancer Center, Hawaii, United States of America
| | - Anna H. Wu
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California, United States of America
| | - Xifeng Wu
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Yin-Ling Woo
- Department of Obstetrics and Gynaecology, University Malaya Medical Centre, University Malaya, Kuala Lumpur, Malaysia
| | - Hannah Yang
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Wei Zheng
- Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Argyrios Ziogas
- Genetic Epidemiology Research Institute, Center for Cancer Genetics Research and Prevention, University of California Irvine, Irvine, California, United States of America
| | - Hanis N. Hasmad
- Cancer Research Initiatives Foundation, Sime Darby Medical Center, Subang Jaya, Malaysia
| | - Andrew Berchuck
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, North Carolina, United States of America
| | | | - Edwin S. Iversen
- Department of Statistics, Duke University, Durham, North Carolina, United States of America
| | - Joellen M. Schildkraut
- Cancer Prevention, Detection & Control Research Program, Duke Cancer Institute, Durham, North Carolina, United States of America
| | - Susan J. Ramus
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California, United States of America
| | - Ellen L. Goode
- Department of Health Science Research, Division of Epidemiology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Alvaro N. A. Monteiro
- Division of Population Sciences, Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Simon A. Gayther
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, California, United States of America
| | - Steven A. Narod
- Women's College Research Institute, University of Toronto, Toronto, Ontario, Canada
| | - Paul D. P. Pharoah
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Cambridge, UK
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Thomas A. Sellers
- Division of Population Sciences, Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Florida, United States of America
| | - Catherine M. Phelan
- Division of Population Sciences, Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Florida, United States of America
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Tourancheau A, Margaillan G, Rouleau M, Gilbert I, Villeneuve L, Lévesque E, Droit A, Guillemette C. Unravelling the transcriptomic landscape of the major phase II UDP-glucuronosyltransferase drug metabolizing pathway using targeted RNA sequencing. THE PHARMACOGENOMICS JOURNAL 2015; 16:60-70. [PMID: 25869014 DOI: 10.1038/tpj.2015.20] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/21/2014] [Accepted: 02/09/2015] [Indexed: 02/04/2023]
Abstract
A comprehensive view of the human UDP-glucuronosyltransferase (UGT) transcriptome is a prerequisite to the establishment of an individual's UGT metabolic glucuronidation signature. Here, we uncover the transcriptome landscape of the 10 human UGT gene loci in normal and tumoral metabolic tissues by targeted RNA next-generation sequencing. Alignment on the human hg19 reference genome identifies 234 novel exon-exon junctions. We recover all previously known UGT1 and UGT2 enzyme-coding transcripts and identify over 130 structurally and functionally diverse novel UGT variants. We further expose a revised genomic structure of UGT loci and provide a comprehensive repertoire of transcripts for each UGT gene. Data also uncover a remodelling of the UGT transcriptome occurring in a tissue- and tumor-specific manner. The complex alternative splicing program regulating UGT expression and protein functions is likely critical in determining detoxification capacity of an organ and stress-related responses, with significant impact on drug responses and diseases.
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Affiliation(s)
- A Tourancheau
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire (CHU) de Québec Research Center, Québec, QC, Canada.,Faculty of Pharmacy, Laval University, Québec, QC, Canada
| | - G Margaillan
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire (CHU) de Québec Research Center, Québec, QC, Canada.,Faculty of Pharmacy, Laval University, Québec, QC, Canada
| | - M Rouleau
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire (CHU) de Québec Research Center, Québec, QC, Canada.,Faculty of Pharmacy, Laval University, Québec, QC, Canada
| | - I Gilbert
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire (CHU) de Québec Research Center, Québec, QC, Canada.,Faculty of Pharmacy, Laval University, Québec, QC, Canada
| | - L Villeneuve
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire (CHU) de Québec Research Center, Québec, QC, Canada.,Faculty of Pharmacy, Laval University, Québec, QC, Canada
| | - E Lévesque
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire (CHU) de Québec Research Center, Québec, QC, Canada.,Faculty of Medicine, Laval University, Québec, QC, Canada
| | - A Droit
- Faculty of Medicine, Laval University, Québec, QC, Canada
| | - C Guillemette
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire (CHU) de Québec Research Center, Québec, QC, Canada.,Faculty of Pharmacy, Laval University, Québec, QC, Canada.,Canada Research Chair in Pharmacogenomics, Pharmacogenomics Laboratory, CHU de Quebec Research Center, Quebec, QC, Canada
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Yan T, Gao S, Peng X, Shi J, Xie C, Li Q, Lu L, Wang Y, Zhou F, Liu Z, Hu M. Significantly decreased and more variable expression of major CYPs and UGTs in liver microsomes prepared from HBV-positive human hepatocellular carcinoma and matched pericarcinomatous tissues determined using an isotope label-free UPLC-MS/MS method. Pharm Res 2015; 32:1141-57. [PMID: 25288013 PMCID: PMC7728448 DOI: 10.1007/s11095-014-1525-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 09/12/2014] [Indexed: 12/22/2022]
Abstract
PURPOSE To determine the liver expression of cytochrome P450 (CYPs) and uridine 5'-diphosphate-glucuronosyltransferases (UGTs), the major phase I and II metabolism enzymes responsible for clearance and detoxification of drugs, xenobiotic and endogenous substances. METHODS A validated isotope label-free method was established for absolute and simultaneous quantification of 9 CYPs (1A2, 2A6, 2B6, 2C8, 2C9, 2C19, 2D, 2E1 and 3A4) and 5 UGTs (1A1, 1A4, 1A6, 1A9 and 2B7) in human liver microsomes using LC-MS/MS. RESULTS The LC-MS/MS method displayed excellent dynamic range (at least 250-fold) and high sensitivity for each of the signature peptides with acceptable recovery, accuracy and precision. The protein expression profile of CYP and UGT isoforms were then determined in match microsomes samples prepared from patients with HBV-positive human hepatocellular carcinoma (HCC). In the tumor microsomes, the average absolute amounts of 8 major CYP isoforms (except CYP2C19) and 3 UGT isoforms (UGT1A1, UGT1A4 and UGT2B7) were decreased significantly (p < 0.05), whereas UGT1A6 and UGT1A9 levels were unchanged (p > 0.05). In addition, among isoforms with altered expression, 6 of 8 CYP isoforms and all three UGT isoforms were much more variable in tumor microsomes. Lastly, the importance of CYP3A4 was greatly diminished whereas the importance of UGT1A6 was enhanced in tumor microsomes. CONCLUSION The use of an isotope label-free absolute quantification method for the simultaneous determination of 9 CYPs and 5 UGTs in human liver microsomes reveals that expression levels of CYPs and UGTs in human liver are severely impact by HCC, which could impact drug metabolism, disposition and pharmacotherapy.
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Affiliation(s)
- Tongmeng Yan
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China, 510006
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, China, 510515
| | - Song Gao
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77030, USA
| | - Xiaojuan Peng
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China, 510006
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, China, 510515
| | - Jian Shi
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China, 510006
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, China, 510515
| | - Cong Xie
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China, 510006
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, China, 510515
| | - Qiang Li
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China, 510006
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, China, 510515
| | - Linlin Lu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China, 510006
| | - Ying Wang
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China, 510006
| | - Fuyuan Zhou
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China, 510515
| | - Zhongqiu Liu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China, 510006
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, China, 510515
| | - Ming Hu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77030, USA
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33
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Differential expression of the UGT1A family of genes in stomach cancer tissues. Tumour Biol 2015; 36:5831-7. [DOI: 10.1007/s13277-015-3253-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 02/10/2015] [Indexed: 12/07/2022] Open
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Gauthier-Landry L, Bélanger A, Barbier O. Multiple roles for UDP-glucuronosyltransferase (UGT)2B15 and UGT2B17 enzymes in androgen metabolism and prostate cancer evolution. J Steroid Biochem Mol Biol 2015; 145:187-92. [PMID: 24861263 DOI: 10.1016/j.jsbmb.2014.05.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 05/13/2014] [Accepted: 05/16/2014] [Indexed: 11/20/2022]
Abstract
In the prostate, approximately 50% of androgens are from adrenal steroids, mainly dehydroepiandrosterone (DHEA), its sulfate and androstenedione. These compounds are converted first into testosterone, and then into the active hormone dihydrotestosterone (DHT). After having activated the androgen receptor (AR), DHT is reduced into androstane-3α-DIOL (3α-DIOL) and androsterone (ADT), which are subsequently converted into 2 inactive and easily excretable metabolites: 3α-DIOL-17glucuronide (3α-DIOL-17G) and ADT-3glucuronide (ADT-3G). The formation of these last derivatives through the glucuronidation reaction involves 2 UDP-glucuronosyltransferase (UGT) enzymes, namely UGT2B15 and UGT2B17. The present review article aims at providing a comprehensive view of the physiological and pharmacological importance of these 2 enzymes for the control of androgen homeostasis. We will resume: (i) how UGT2B15 and UGT2B17 contribute to androgen elimination; (ii) how their glucuronidation capacity influences the androgen signaling pathway in prostate cells; (iii) how they contribute to the anti-proliferative properties of AR antagonists in prostate cancer cells; and (iv) how AR and its spliced variants regulate the UGT2B15 and/or UGT2B17 genes expression. Finally, whether the unexploited AR-UGT axis could serve as a prognostic maker or a pharmacological target for novel therapeutics in the treatment of prostate cancer is also discussed. This article is part of a special issue entitled 'Essential role of DHEA'.
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Affiliation(s)
- Louis Gauthier-Landry
- Laboratory of Molecular Pharmacology, CHU de Québec Research Centre, and the Faculty of Pharmacy, Laval University, Québec, Canada
| | - Alain Bélanger
- CHU de Québec Research Centre, and the Faculty of Medicine, Laval University, Québec, Canada
| | - Olivier Barbier
- Laboratory of Molecular Pharmacology, CHU de Québec Research Centre, and the Faculty of Pharmacy, Laval University, Québec, Canada.
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35
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Sukasem C, Atasilp C, Chansriwong P, Chamnanphon M, Puangpetch A, Sirachainan E. Development of Pyrosequencing Method for Detection of UGT1A1 Polymorphisms in Thai Colorectal Cancers. J Clin Lab Anal 2014; 30:84-9. [PMID: 25545261 DOI: 10.1002/jcla.21820] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 10/21/2014] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND UGT1A1 is a polymorphic enzyme that has been associated with irinotecan drug metabolisms. We developed a pyrosequencing method to detect allele frequency and genotype of UGT1A1 polymorphisms (UGT1A1*28 and UGT1A1*6) in Thai colorectal cancer patients. METHOD A pyrosequencing method was designed to determine UGT1A1 genetic polymorphisms including UGT1A1*28 (A[TA]7TAA) and UGT1A1*6 (211G>A) in 91 Thai colorectal cancers. RESULT Genotyping by the pyrosequencing technique was 100% concordant with capillary electrophoresis sequencing. The allele frequencies for UGT1A1 genetic polymorphisms were *1/*1 (54.95%), *1/*6 (13.19%), *1/*28 (25.27%), *28/*6 (4.40%), and *28/*28 (2.20%). No homozygous mutation UGT1A1*6 was found in our population. CONCLUSIONS We developed a rapid, reliable, more cost-effective, and simple assay to detect UGT1A1 genetic polymorphisms in routine practice before initiating irinotecan therapy. The UGT1A1*28 and UGT1A1*6 alleles were found to be similar in the Asian populations.
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Affiliation(s)
- Chonlaphat Sukasem
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Clinical Pathology, Somdetch Phra Debharatana Medical Centre, Ramathibodi Hospital, Bangkok, Thailand
| | - Chalirmporn Atasilp
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Clinical Pathology, Somdetch Phra Debharatana Medical Centre, Ramathibodi Hospital, Bangkok, Thailand
| | - Pichai Chansriwong
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Montri Chamnanphon
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Clinical Pathology, Somdetch Phra Debharatana Medical Centre, Ramathibodi Hospital, Bangkok, Thailand
| | - Apichaya Puangpetch
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Laboratory for Pharmacogenomics, Clinical Pathology, Somdetch Phra Debharatana Medical Centre, Ramathibodi Hospital, Bangkok, Thailand
| | - Ekapob Sirachainan
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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36
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Hu DG, Meech R, McKinnon RA, Mackenzie PI. Transcriptional regulation of human UDP-glucuronosyltransferase genes. Drug Metab Rev 2014; 46:421-58. [PMID: 25336387 DOI: 10.3109/03602532.2014.973037] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Glucuronidation is an important metabolic pathway for many small endogenous and exogenous lipophilic compounds, including bilirubin, steroid hormones, bile acids, carcinogens and therapeutic drugs. Glucuronidation is primarily catalyzed by the UDP-glucuronosyltransferase (UGT) 1A and two subfamilies, including nine functional UGT1A enzymes (1A1, 1A3-1A10) and 10 functional UGT2 enzymes (2A1, 2A2, 2A3, 2B4, 2B7, 2B10, 2B11, 2B15, 2B17 and 2B28). Most UGTs are expressed in the liver and this expression relates to the major role of hepatic glucuronidation in systemic clearance of toxic lipophilic compounds. Hepatic glucuronidation activity protects the body from chemical insults and governs the therapeutic efficacy of drugs that are inactivated by UGTs. UGT mRNAs have also been detected in over 20 extrahepatic tissues with a unique complement of UGT mRNAs seen in almost every tissue. This extrahepatic glucuronidation activity helps to maintain homeostasis and hence regulates biological activity of endogenous molecules that are primarily inactivated by UGTs. Deciphering the molecular mechanisms underlying tissue-specific UGT expression has been the subject of a large number of studies over the last two decades. These studies have shown that the constitutive and inducible expression of UGTs is primarily regulated by tissue-specific and ligand-activated transcription factors (TFs) via their binding to cis-regulatory elements (CREs) in UGT promoters and enhancers. This review first briefly summarizes published UGT gene transcriptional studies and the experimental models and tools utilized in these studies, and then describes in detail the TFs and their respective CREs that have been identified in the promoters and/or enhancers of individual UGT genes.
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Affiliation(s)
- Dong Gui Hu
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University School of Medicine, Flinders Medical Centre , Bedford Park, SA , Australia
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37
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Angstadt AY, Hartman TJ, Lesko SM, Muscat JE, Zhu J, Gallagher CJ, Lazarus P. The effect of UGT1A and UGT2B polymorphisms on colorectal cancer risk: haplotype associations and gene–environment interactions. Genes Chromosomes Cancer 2014; 53:454-66. [PMID: 24822274 DOI: 10.1002/gcc.22157] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
UDP-glucuronosyltransferases (UGTs) play an important role in the phase II metabolism of exogenous and endogenous compounds. As colorectal cancer (CRC) etiology is thought to involve the biotransformation of dietary factors, UGT polymorphisms may affect CRC risk by altering levels of exposure. Genotyping of over 1800 Caucasian subjects was completed to identify the role of genetic variation in nine UGT1A and five UGT2B genes on CRC risk. Unconditional logistic regression and haplotype analyses were conducted to identify associations with CRC risk and potential gene-environment interactions. UGT1A haplotype analysis found that the T-G haplotype in UGT1A10 exon 1 (block 2: rs17864678, rs10929251) decreased cancer risk for the colon [proximal (OR = 0.28, 95% CI = 0.11–0.69) and for the distal colon (OR = 0.32, 95% CI = 0.12–0.91)], and that the C-T-G haplotype in the 3′ region flanking the UGT1A shared exons (block 11: rs7578153, rs10203853, rs6728940) increased CRC risk in males (OR = 2.56, 95% CI = 1.10–5.95). A haplotype in UGT2B15 containing a functional variant (rs4148269, K523T) and an intronic SNP (rs6837575) was found to affect rectal cancer risk overall (OR = 2.57, 95% CI = 1.21–5.04) and in females (OR = 3.08, 95% CI = 1.08–8.74). An interaction was found between high NSAID use and the A-G-T haplotype (block 10: rs6717546, rs1500482, rs7586006) in the UGT1A shared exons that decreased CRC risk. This suggests that UGT genetic variation alters CRC risk differently by anatomical sub-site and gender and that polymorphisms in the UGT1A shared exons may have a regulatory effect on gene expression that allows for the protective effect of NSAIDs on CRC risk.
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38
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Regioselective glucuronidation of the isoflavone calycosin by human liver microsomes and recombinant human UDP-glucuronosyltransferases. Chem Biol Interact 2014; 220:231-40. [DOI: 10.1016/j.cbi.2014.07.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 06/23/2014] [Accepted: 07/07/2014] [Indexed: 11/18/2022]
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39
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Pharmacogenomics of human uridine diphospho-glucuronosyltransferases and clinical implications. Clin Pharmacol Ther 2014; 96:324-39. [PMID: 24922307 DOI: 10.1038/clpt.2014.126] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 06/07/2014] [Indexed: 12/12/2022]
Abstract
Glucuronidation by uridine diphospho-glucuronosyltransferase enzymes (UGTs) is a major phase II biotransformation pathway and, complementary to phase I metabolism and membrane transport, one of the most important cellular defense mechanisms responsible for the inactivation of therapeutic drugs, other xenobiotics, and endogenous molecules. Interindividual variability in UGT pathways is significant and may have profound pharmacological and toxicological implications. Several genetic and genomic processes underlie this variability and are discussed in relation to drug metabolism and diseases such as cancer.
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40
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Truncated UDP-glucuronosyltransferase (UGT) from a Crigler-Najjar syndrome type II patient colocalizes with intact UGT in the endoplasmic reticulum. J Hum Genet 2014; 59:158-62. [PMID: 24401909 PMCID: PMC3973126 DOI: 10.1038/jhg.2013.138] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Revised: 10/15/2013] [Accepted: 12/10/2013] [Indexed: 11/13/2022]
Abstract
Mutations in the gene encoding bilirubin UDP-glucuronosyltransferase (UGT1A1) are known to cause Crigler–Najjar syndrome type II (CN-II). We previously encountered a patient with a nonsense mutation (Q331X) on one allele and with no other mutations in the promoter region or other exons, and proposed that CN-II is inherited as a dominant trait due to the formation of a heterologous subunit structure comprised of the altered UGT1A1 gene product (UGT1A1-p.Q331X) and the intact UGT1A1. Here, we investigated the molecular basis of CN-II in this case by expressing UGT1A1-p.Q331X in cells. UGT1A1-p.Q331X overexpressed in Escherichia coli or mammalian cells directly bound or associated with intact UGT1A1 in vitro or in vivo, respectively. Intact UGT1A1 was observed as a dimer using atomic force microscopy. Fluorescent-tagged UGT1A1-p.Q331X and intact UGT1A1 were colocalized in 293T cells, and fluorescence recovery after photobleaching analysis showed that UGT1A1-p.Q331X was retained in the endoplasmic reticulum (ER) without rapid degradation. These findings support the idea that UGT1A1-p.Q331X and UGT1A1 form a dimer and provide an increased mechanistic understanding of CN-II.
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41
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Expression of UGT2B7 is driven by two mutually exclusive promoters and alternative splicing in human tissues. Pharmacogenet Genomics 2013; 23:684-96. [DOI: 10.1097/fpc.0000000000000008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Rouleau M, Roberge J, Bellemare J, Guillemette C. Dual Roles for Splice Variants of the Glucuronidation Pathway as Regulators of Cellular Metabolism. Mol Pharmacol 2013; 85:29-36. [DOI: 10.1124/mol.113.089227] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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43
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Ménard V, Collin P, Margaillan G, Guillemette C. Modulation of the UGT2B7 Enzyme Activity by C-Terminally Truncated Proteins Derived from Alternative Splicing. Drug Metab Dispos 2013; 41:2197-205. [DOI: 10.1124/dmd.113.053876] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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44
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Song H, Wang J, Zhang R, Liu X, Yuan G, Wei C, Wang B, Guo R. Identification and characterization of human UDP-glucuronosyltransferases responsible for thein vitroglucuronidation of bergenin. Biomed Chromatogr 2013; 28:348-53. [PMID: 23996546 DOI: 10.1002/bmc.3027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Revised: 07/23/2013] [Accepted: 07/30/2013] [Indexed: 11/05/2022]
Affiliation(s)
- Haojing Song
- Institute of Clinical Pharmacology; Qilu Hospital of Shandong University; Jinan Shandong 250012 People's Republic of China
- Department of Pharmacology; Shandong University School of Medicine; Jinan Shandong 250012 People's Republic of China
| | - Jin Wang
- Department of Pharmacology; Shandong University School of Medicine; Jinan Shandong 250012 People's Republic of China
| | - Rui Zhang
- Institute of Clinical Pharmacology; Qilu Hospital of Shandong University; Jinan Shandong 250012 People's Republic of China
| | - Xiaoyan Liu
- Institute of Clinical Pharmacology; Qilu Hospital of Shandong University; Jinan Shandong 250012 People's Republic of China
| | - Guiyan Yuan
- Institute of Clinical Pharmacology; Qilu Hospital of Shandong University; Jinan Shandong 250012 People's Republic of China
| | - Chunmin Wei
- Institute of Clinical Pharmacology; Qilu Hospital of Shandong University; Jinan Shandong 250012 People's Republic of China
| | - Benjie Wang
- Institute of Clinical Pharmacology; Qilu Hospital of Shandong University; Jinan Shandong 250012 People's Republic of China
| | - Ruichen Guo
- Institute of Clinical Pharmacology; Qilu Hospital of Shandong University; Jinan Shandong 250012 People's Republic of China
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45
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Bigo C, Caron S, Dallaire-Théroux A, Barbier O. Nuclear receptors and endobiotics glucuronidation: the good, the bad, and the UGT. Drug Metab Rev 2013; 45:34-47. [PMID: 23330540 DOI: 10.3109/03602532.2012.751992] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The recent progresses in molecular biology and pharmacology approaches allowed the characterization of a series of nuclear receptors (NRs) as efficient regulators of uridine diphosphate glucuronosyltransferase (UGT) genes activity. These regulatory processes ensure an optimized UGT expression in response to specific endo- and/or exogenous stimuli. Many of these NRs are activated by endobiotics that also are substrates for UGTs. Thus, by activating their receptors, these endogenous substances control their own conjugation, leading to the concept that glucuronidation is an important part of feed-forward/feedback mechanisms by which bioactive molecules control their own concentrations. On the other hand, numerous studies have established the pharmacological relevance of NR-UGT regulatory pathways in the response to therapeutic ligands. The present review article aims at providing a comprehensive view of the physiological and pharmacological importance of the NR regulation of the expression and activity of endobiotics-conjugating UGT enzymes. Selected examples will illustrate how the organism profits from the feed-forward/feedback mechanisms involving NR-UGT pathways, but also how such regulatory processes are involved in the initiation and/or progression of several pathological situations. Finally, we will discuss how the present pharmacopeia involves NR-dependent regulation of endobiotics glucuronidation, and whether the unexploited NR-UGT axes could serve as pharmacological targets for novel therapeutics to restore endobiotics homeostasis.
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Affiliation(s)
- Cyril Bigo
- Laboratory of Molecular Pharmacology, CHUQ Research Center and the Faculty of Pharmacy, Laval University, Québec City, Québec, Canada
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46
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Protein-protein interactions between the bilirubin-conjugating UDP-glucuronosyltransferase UGT1A1 and its shorter isoform 2 regulatory partner derived from alternative splicing. Biochem J 2013; 450:107-14. [PMID: 23148825 DOI: 10.1042/bj20121594] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The oligomerization of UGTs [UDP (uridine diphosphate)-glucuronosyltransferases] modulates their enzyme activities. Recent findings also indicate that glucuronidation is negatively regulated by the formation of inactive oligomeric complexes between UGT1A enzymes [i1 (isoform 1)] and an enzymatically inactive alternatively spliced i2 (isoform 2). In the present paper, we assessed whether deletion of the UGT-interacting domains previously reported to be critical for enzyme function might be involved in i1-i2 interactions. The bilirubin-conjugating UGT1A1 was used as a prototype. We also explored whether intermolecular disulfide bonds are involved in i1-i2 interactions and the potential role of selected cysteine residues. Co-immunoprecipitation assays showed that UGT1A1 lacking the SP (signal peptide) alone or also lacking the transmembrane domain (absent from i2) did not self-interact, but still interacted with i2. The deletion of other N- or C-terminal domains did not compromise i1-i2 complex formation. Under non-reducing conditions, we also observed formation of HMWCs (high-molecular-mass complexes) for cells overexpressing i1 and i2. The presence of UGTs in these complexes was confirmed by MS. Mutation of individual cysteine residues throughout UGT1A1 did not compromise i1-i1 or i1-i2 complex formation. These findings are compatible with the hypothesis that the interaction between i1 and i2 proteins (either transient or stable) involves binding of more than one domain that probably differs from those involved in i1-i1 interactions.
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47
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Bushey RT, Lazarus P. Identification and functional characterization of a novel UDP-glucuronosyltransferase 2A1 splice variant: potential importance in tobacco-related cancer susceptibility. J Pharmacol Exp Ther 2012; 343:712-24. [PMID: 22984225 PMCID: PMC3500542 DOI: 10.1124/jpet.112.198770] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 09/12/2012] [Indexed: 12/13/2022] Open
Abstract
UDP-glucuronosyltransferase (UGT) 2A1 is a respiratory and aerodigestive tract-expressing phase II detoxifying enzyme that metabolizes various xenobiotics including polycyclic aromatic hydrocarbons (PAHs). In the present study, a novel exon 3 deletion splice variant was identified for UGT2A1 (UGT2A1Δexon3). As determined by reverse transcription-polymerase chain reaction (PCR), UGT2A1Δexon3 was shown to be expressed in various tissues including lung, trachea, larynx, tonsil, and colon. The ratio of UGT2A1Δexon3/wild-type UGT2A1 expression was highest in colon (0.79 ± 0.08) and lung (0.42 ± 0.12) as determined by real-time PCR; an antibody specific to UGT2A1 showed splice variant protein (UGT2A1_i2) to wild-type protein (UGT2A1_i1) ratios in the range of 0.5 to 0.9 in these tissues. Using ultra-pressure liquid chromatography, we found that homogenates prepared from UGT2A1_i2-overexpressing human embryonic kidney 293 cells exhibited no glucuronidation activity against PAHs, including benzo[a]pyrene-7,8-dihydrodiol (B[a]P-7,8-diol). An inducible in vitro system was created to determine the effect of UGT2A1_i2 expression on UGT2A1_i1 activity. Increasing UGT2A1_i2 levels resulted in a significant (p < 0.01) decrease in the UGT2A1_i1 V(max) against 1-hydroxy (OH)-pyrene, 3-OH-benzo[a]pyrene, and B[a]P-7,8-diol; no significant changes in K(M) were observed for any of the three substrates. Coimmunoprecipitation experiments suggested the formation of UGT2A1_i1 and UGT2A1_i2 hetero-oligomers and UGT2A1_i1 homo-oligomers; coexpression of UGT2A1_i1 or UGT2A1_i2 with other UGT1A or UGT2B enzymes caused no change in UGT1A or UGT2B glucuronidation activity. These data suggest that a novel UGT2A1 splice variant regulates UGT2A1-mediated glucuronidation activity via UGT2A1-specific protein-protein interactions, and expression of this variant could play an important role in the detoxification of carcinogens within target tissues for tobacco carcinogenesis.
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Affiliation(s)
- Ryan T Bushey
- Department of Pharmacology, Penn State University College of Medicine, Hershey, PA 17033, USA
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He YJ, Fang ZZ, Ge GB, Jiang P, Jin HZ, Zhang WD, Yang L. The Inhibitory Effect of 20(S
)-Protopanaxatriol (ppt) Towards UGT1A1 and UGT2B7. Phytother Res 2012; 27:628-32. [DOI: 10.1002/ptr.4755] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 05/05/2012] [Accepted: 05/07/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Ya-Jun He
- School of Pharmacy; Shanghai Jiao Tong University; No. 800, Dongchuan Road Shanghai 200240 PR China
- School of Pharmacy; Second Military Medical University; Guohe Road Shanghai 200433 PR China
| | - Zhong-Ze Fang
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 PR China
| | - Guang-Bo Ge
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 PR China
| | - Peng Jiang
- School of Pharmacy; Second Military Medical University; Guohe Road Shanghai 200433 PR China
| | - Hui-Zi Jin
- School of Pharmacy; Shanghai Jiao Tong University; No. 800, Dongchuan Road Shanghai 200240 PR China
| | - Wei-Dong Zhang
- School of Pharmacy; Shanghai Jiao Tong University; No. 800, Dongchuan Road Shanghai 200240 PR China
- School of Pharmacy; Second Military Medical University; Guohe Road Shanghai 200433 PR China
| | - Ling Yang
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 PR China
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Jones NR, Sun D, Freeman WM, Lazarus P. Quantification of Hepatic UDP glucuronosyltransferase 1A splice variant expression and correlation of UDP glucuronosyltransferase 1A1 variant expression with glucuronidation activity. J Pharmacol Exp Ther 2012; 342:720-9. [PMID: 22661630 DOI: 10.1124/jpet.112.192658] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The UDP glucuronosyltransferase (UGT) 1A gene cluster encodes nine UGT1A family members via splicing of individual first exons to common exons 2 through 5. Each of these nine UGT1As can also undergo alternative splicing at their 3' ends by using an alternate exon 5, resulting in 27 different UGT1A mRNA species with each UGT1A gene encoding three different combinations of 5A and 5B UGT1A exons. To examine the importance of UGT1A exon 5 splice variants on overall UGT1A activity, a nested quantitative polymerase chain reaction assay was developed to accurately assess the combined expression of exon 5 splice variants (termed v2/v3) versus the expression of wild-type (termed v1) for each specific UGT1A. v1 expression was 16-, 17-, 57- and 29-fold higher than that observed for the levels of v2/v3 for UGTs 1A1, 1A4, 1A6, and 1A9, respectively, in normal human liver specimens. In a series of 58 normal human liver specimens, the expression of both UGT1A1 v1 and v2/v3 mRNAs was positively correlated with raloxifene glucuronidation activity in corresponding microsomes prepared from the same specimens (p < 0.0001, r² = 0.720; p = 0.0002, r² = 0.241, respectively), with expression of both variants lower in individuals homozygous for the UGT1A1*28 allele (42% for v1, p = 0.041; 53% for v2/v3, p = 0.0075). The expression of UGT1A1 v2/v3 was 1.6-fold higher than v1 (p = 0.03) in HepG2 cells, and short interfering RNA knockdown of HepG2 v2/v3 increased raloxifene glucuronidation activity by 83%. Together, these data suggest that hepatic UGT1A v2/v3 mRNA species are minor form variants in human livers from most individuals.
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Affiliation(s)
- Nathan R Jones
- Department of Pharmacology, Pennsylvania State College of Medicine, Hershey, Pennsylvania, USA
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Ciprofibrate regulation of rat hepatic bilirubin glucuronidation and UDP-glucuronosyltransferases expression. Eur J Drug Metab Pharmacokinet 2012; 37:233-40. [PMID: 22476862 DOI: 10.1007/s13318-012-0091-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Accepted: 03/21/2012] [Indexed: 10/28/2022]
Abstract
Synthetic fibrates are hypolipidemic drugs known to stimulate hepatic peroxisome proliferation and bilirubin glucuronidation. This study was designed to estimate the effects of ciprofibrate simultaneously on rat hepatic bilirubin glucuronoconjugation and on hepatic expression of UGT1A1, UGT1A2 and UGT1A5, all of which belong to the bilirubin cluster. Hepatic bilirubin glucuronidation activity and UDP-glucuronosyltransferase expression (RT-PCR and Western blotting) were measured after a single-dose ciprofibrate treatment (5 mg/kg by gastric intubation) in 36-h time course experiments. Ciprofibrate regulation of PPARα and UGT1A5 mRNA expression was also investigated in rat hepatocytes. Bilirubin conjugation activity was induced by ciprofibrate, reaching a maximum level (2.4×) 24 h after the treatment. UGT1A1 and UGT1A5 mRNA expression was induced 1.5 times by ciprofibrate, with UGT1A5 reaching the basal level of UGT1A1. Although UGT1A2 mRNA was induced approximately threefold by ciprofibrate, its expression level remained low in comparison with basal or induced levels of UGT1A1 and UGT1A5 mRNA. In the 36-h time course experiment, bilirubin conjugation activity as well as UGT1A5 and PPARα mRNA expression presented a biphasic induction profile. Although a similar level of induction was observed in primary cultured hepatocyte experiments, such biphasic variation was not observed for both UGT1A5 and PPARα, and the induction of UGT1A5 mRNA expression by ciprofibrate required de novo protein synthesis. A single dose of ciprofibrate significantly induces rat liver bilirubin conjugation as well as UGT1A1, UGT1A5 and PPARα expression. The induction mechanism may involve PPARα, at least regarding UGT1A5 regulation.
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