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Gao Y, Sun YY, Bai D, Wu XX. Mechanism of the components compatibility of Scutellariae Radix and Coptidis Rhizoma on mice with hyperlipidemia by regulating the Cyp4a family. JOURNAL OF ETHNOPHARMACOLOGY 2024; 331:118263. [PMID: 38677575 DOI: 10.1016/j.jep.2024.118263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/24/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Scutellaria baicalensis Georgi (Scutellariae Radix, SR) and Coptis chinensis Franch (Coptidis Rhizoma, CR) is a classic herbal pair used in many Traditional Chinese Medicine formulations in the treatment of hyperlipidemia (HLP). As effective ingredients of the drug pair, the effects and mechanisms of berberine and baicalin in the treatment of HLP in the form of components compatibility are still unclear. AIM OF THE STUDY To explore the mechanism of the components compatibility of SR and CR in the treatment of HLP. MATERIALS AND METHODS The HLP model was established by a high-fat diet. Serum biochemical indexes were detected. Transcriptomics and metabolomics were detected. RT-PCR and Western Blot were used to analyze the effect of RA on the expression of the Cyp4a family during the treatment of HLP. RESULTS Berberine-baicalin (RA) has a good effect in the treatment of HLP. RA can significantly reduce the body weight and liver weight of HLP, reduce the levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL-C), and increase the level of high-density lipoprotein (HDL-C). Through transcriptomic analysis, RA significantly reversed the gene expression of Cyp4a10, Cyp4a12 b, Cyp4a31, and Cyp4a32 in cytochrome P450 family 4 subfamily a (Cyp4a) which related to fatty acid degradation in the liver of HLP mice. The results of fatty acid detection showed that RA could significantly regulate heptanoic acid, EPA, adrenic acid, DH-γ-linolenic acid, and DPA in the cecum of HLP mice. The Cyp4a family genes regulated by RA are closely related to a variety of fatty acids regulated by RA. RT-PCR confirmed that RA could regulate Cyp4a mRNA expression in HLP mice. WB also showed that RA can regulate the protein expression level of Cyp4a. CONCLUSION The components compatibility of SR and CR can effectively improve the blood lipid level of HLP mice, its mechanism may be related to regulating Cyp4a gene expression and affecting fatty acid degradation, regulating the level of fatty acid metabolism in the body.
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Affiliation(s)
- Yuan Gao
- The Institute of Basic Theory of Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - Yang-Yang Sun
- The Institute of Basic Theory of Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - Dong Bai
- The Institute of Basic Theory of Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - Xiao-Xia Wu
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
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Bisht A, Dey S, Kulshreshtha R. Integrated meta-analyses of genome-wide effects of PM 2.5 in human cells identifies widespread dysregulation of genes and pathways associated with cancer progression and patient survival. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 938:173448. [PMID: 38797421 DOI: 10.1016/j.scitotenv.2024.173448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/08/2024] [Accepted: 05/20/2024] [Indexed: 05/29/2024]
Abstract
Epidemiological studies have consistently shown a positive association between exposure to ambient PM2.5, a major component of air pollution, and various types of cancer. Previous biological research has primarily focused on the association between PM2.5 and lung cancer, with limited investigation into other cancer types. In this study, we conducted a meta-analysis on multiple PM2.5-treated normal human cell lines to identify potential molecular targets and pathways of PM2.5. Our analysis revealed 310 common differentially expressed genes (DEGs) that exhibited significant dysregulation upon exposure to PM2.5. These dysregulated genes covered a diverse range of functional categories, including oncogenes, tumor suppressor genes, and immune-related genes, which collectively contribute to PM2.5-induced carcinogenesis. Pathway enrichment analysis revealed the up-regulation of pathways associated with HIF-1, VEGF, and MAPK signalling, all of which have been implicated in various cancers. Induction in the levels of HIF pathway genes (HIF1⍺, HIF2⍺, VEGFA, BNIP3, EPO and PGK1) upon PM2.5 treatment was also confirmed by qRT-PCR. Furthermore, the construction of a protein-protein interaction (PPI) network unveiled hub genes, such as NQO1 and PDGFRB, that are known to be dysregulated and significantly correlated with overall survival in lung and breast cancer patients, suggesting their potential clinical significance. This study provides a deep insight into how PM2.5-mediated dysregulation of oncogenes or tumor suppressor genes across various human tissues may play an important role in PM2.5-induced carcinogenesis. Further exploration of these dysregulated molecular targets may enhance our understanding of the biological effects of PM2.5 and facilitate the development of preventive strategies and targeted therapies for PM2.5-associated cancers.
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Affiliation(s)
- Anadi Bisht
- School of Interdisciplinary Research, Indian Institute of Technology Delhi, New Delhi, India; Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India
| | - Sagnik Dey
- Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, India; Centre of Excellence for Research on Clean Air, Indian Institute of Technology Delhi, New Delhi, India
| | - Ritu Kulshreshtha
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India.
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3
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Shen C, Yang Q, Chen K, Ma H, Wang X, Tong J, Shen Y, Cui H. Uncovering the role of ferroptosis in Bietti crystalline dystrophy and potential therapeutic strategies. Cell Commun Signal 2024; 22:359. [PMID: 38992691 PMCID: PMC11241923 DOI: 10.1186/s12964-024-01710-x] [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: 03/18/2024] [Accepted: 06/09/2024] [Indexed: 07/13/2024] Open
Abstract
PURPOSE Bietti crystalline dystrophy (BCD) is an inherited retinal degeneration disease caused by mutations in the CYP4V2 gene. Currently, there is no clinical therapy approach available for BCD patients. Previous research has suggested that polyunsaturated fatty acids (PUFAs) may play a significant role in the development of BCD, implicating the involvement of ferroptosis in disease pathogenesis. In this work, we aimed to investigate the interplay between ferroptosis and BCD and to detect potential therapeutic strategies for the disease. METHODS Genetic-edited RPE cell line was first established in this study by CRISPR-Cas9 technology. Cyp4v3 (the homologous gene of human CYP4V2) knock out (KO) mice have also been used. Lipid profiling and transcriptome analysis of retinal pigment epithelium (RPE) cells from Cyp4v3 KO mice have been conducted. Ferroptosis phenotypes have been first investigated in BCD models in vitro and in vivo, including lipid peroxidation, mitochondrial changes, elevated levels of reactive oxygen species (ROS), and altered gene expression. Additionally, an iron chelator, deferiprone (DFP), has been tested in vitro and in vivo to determine its efficacy in suppressing ferroptosis and restoring the BCD phenotype. RESULTS Cyp4v3 KO mice exhibited progressive retinal degeneration and lipid accumulation, similar to the BCD phenotype, which was exacerbated by a high-fat diet (HFD). Increased levels of PUFAs, such as EPA (C22:5) and AA (C20:4), were observed in the RPE of Cyp4v3 KO mice. Transcriptome analysis of RPE in Cyp4v3 KO mice revealed changes in genes involved in iron homeostasis, particularly an upregulation of NCOA4, which was confirmed by immunofluorescence. Ferroptosis-related characteristics, including mitochondrial defects, lipid peroxidation, ROS accumulation, and upregulation of related genes, were detected in the RPE both in vitro and in vivo. Abnormal accumulation of ferrous iron was also detected. DFP, an iron chelator administration suppressed ferroptosis phenotype in CYP4V2 mutated RPE. Oral administration of DFP also restored the retinal function and morphology in Cyp4v3 KO mice. CONCLUSION This study represented the first evidence of the substantial role of ferroptosis in the development of BCD. PUFAs resulting from CYP4V2 mutation may serve as substrates for ferroptosis, potentially working in conjunction with NCOA4-regulated iron accumulation, ultimately leading to RPE degeneration. DFP administration, which chelates iron, has demonstrated its ability to reverse BCD phenotype both in vitro and in vivo, suggesting a promising therapeutic approach in the future.
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Affiliation(s)
- Chang Shen
- Department of Ophthalmology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qianjie Yang
- Department of Ophthalmology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Kuangqi Chen
- Department of Ophthalmology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Huiling Ma
- Department of Ophthalmology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiawei Wang
- Department of Ophthalmology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jianping Tong
- Department of Ophthalmology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ye Shen
- Department of Ophthalmology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Hongguang Cui
- Department of Ophthalmology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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Fang Y, Medina D, Stockwell R, McFadden S, Hascup ER, Hascup KN, Bartke A. Resistance to mild cold stress is greater in both wild-type and long-lived GHR-KO female mice. GeroScience 2023; 45:1081-1093. [PMID: 36527583 PMCID: PMC9886789 DOI: 10.1007/s11357-022-00706-0] [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: 09/08/2022] [Accepted: 11/30/2022] [Indexed: 12/23/2022] Open
Abstract
Adapting to stress, including cold environmental temperature (eT), is crucial for the survival of mammals, especially small rodents. Long-lived mutant mice have enhanced stress resistance against oxidative and non-oxidative challenges. However, much less is known about the response of those long-lived mice to cold stress. Growth hormone receptor knockout (GHR-KO) mice are long-lived with reduced growth hormone signaling. We wanted to test whether GHR-KO mice have enhanced resistance to cold stress. To examine the response of GHR-KO mice to cold eT, GHR-KO mice were housed at mild cold eT (16 °C) immediately following weaning. Longevity results showed that female GHR-KO and wild-type (WT) mice retained similar lifespan, while both male GHR-KO and WT mice had shortened lifespan compared to the mice housed at 23 °C eT. Female GHR-KO and WT mice housed at 16 °C had upregulated fibroblast growth factor 21 (FGF21), enhanced energy metabolism, reduced plasma triglycerides, and increased mRNA expression of some xenobiotic enzymes compared to females housed at 23 °C and male GHR-KO and WT mice housed under the same condition. In contrast, male GHR-KO and WT mice housed at 16 °C showed deleterious effects in parameters which might be associated with their shortened longevity compared to male GHR-KO and WT mice housed at 23 °C. Together, this study suggests that in response to mild cold stress, sex plays a pivotal role in the regulation of longevity, and female GHR-KO and WT mice are more resistant to this challenge than the males.
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Affiliation(s)
- Yimin Fang
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neuroscience Institute, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA.
| | - David Medina
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
| | - Robert Stockwell
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
| | - Samuel McFadden
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neuroscience Institute, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
| | - Erin R Hascup
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neuroscience Institute, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
- Department of Pharmacology, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
| | - Kevin N Hascup
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neuroscience Institute, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
- Department of Pharmacology, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
| | - Andrzej Bartke
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, 62702, USA
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Zhou M, Li J, Xu J, Zheng L, Xu S. Exploring human CYP4 enzymes: physiological roles, function in diseases and focus on inhibitors. Drug Discov Today 2023; 28:103560. [PMID: 36958639 DOI: 10.1016/j.drudis.2023.103560] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 03/06/2023] [Accepted: 03/16/2023] [Indexed: 03/25/2023]
Abstract
The cytochrome P450 (CYP)4 family of enzymes are monooxygenases responsible for the ω-oxidation of endogenous fatty acids and eicosanoids and play a crucial part in regulating numerous eicosanoid signaling pathways. Recently, CYP4 gained attention as a potential therapeutic target for several human diseases, including cancer, cardiovascular diseases and inflammation. Small-molecule inhibitors of CYP4 could provide promising treatments for these diseases. The aim of the present review is to highlight the advances in the field of CYP4, discussing the physiology and pathology of the CYP4 family and compiling CYP4 inhibitors into groups based on their chemical classes to provide clues for the future discovery of drug candidates targeting CYP4. Teaser: This review provides an updated view of the physiology and pathology of CYP4 enzymes. CYP4 inhibitors are compiled based on their skeletons to provide clues for the future discovery of drug candidates targeting CYP4.
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Affiliation(s)
- Manzhen Zhou
- Department of Medicinal Chemistry, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Junda Li
- Department of Medicinal Chemistry, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Jinyi Xu
- Department of Medicinal Chemistry, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Lufeng Zheng
- School of Life Science and Technology, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Shengtao Xu
- Department of Medicinal Chemistry, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China; Department of Hepatobiliary Surgery, The First People's Hospital of Kunshan, Suzhou, 215300, China.
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6
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Spotlight on CYP4B1. Int J Mol Sci 2023; 24:ijms24032038. [PMID: 36768362 PMCID: PMC9916508 DOI: 10.3390/ijms24032038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/16/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023] Open
Abstract
The mammalian cytochrome P450 monooxygenase CYP4B1 can bioactivate a wide range of xenobiotics, such as its defining/hallmark substrate 4-ipomeanol leading to tissue-specific toxicities. Similar to other members of the CYP4 family, CYP4B1 has the ability to hydroxylate fatty acids and fatty alcohols. Structural insights into the enigmatic role of CYP4B1 with functions in both, xenobiotic and endobiotic metabolism, as well as its unusual heme-binding characteristics are now possible by the recently solved crystal structures of native rabbit CYP4B1 and the p.E310A variant. Importantly, CYP4B1 does not play a major role in hepatic P450-catalyzed phase I drug metabolism due to its predominant extra-hepatic expression, mainly in the lung. In addition, no catalytic activity of human CYP4B1 has been observed owing to a unique substitution of an evolutionary strongly conserved proline 427 to serine. Nevertheless, association of CYP4B1 expression patterns with various cancers and potential roles in cancer development have been reported for the human enzyme. This review will summarize the current status of CYP4B1 research with a spotlight on its roles in the metabolism of endogenous and exogenous compounds, structural properties, and cancer association, as well as its potential application in suicide gene approaches for targeted cancer therapy.
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Zhou C, Peng K, Liu Y, Zhang R, Zheng X, Yue B, Du C, Wu Y. Comparative Analyses Reveal the Genetic Mechanism of Ambergris Production in the Sperm Whale Based on the Chromosome-Level Genome. Animals (Basel) 2023; 13:ani13030361. [PMID: 36766250 PMCID: PMC9913093 DOI: 10.3390/ani13030361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/05/2023] [Accepted: 01/14/2023] [Indexed: 01/24/2023] Open
Abstract
Sperm whales are a marine mammal famous for the aromatic substance, the ambergris, produced from its colon. Little is known about the biological processes of ambergris production, and this study aims to investigate the genetic mechanism of ambergris production in the sperm whale based on its chromosome-level genome. Comparative genomics analyses found 1207 expanded gene families and 321 positive selected genes (PSGs) in the sperm whale, and functional enrichment analyses suggested revelatory pathways and terms related to the metabolism of steroids, terpenoids, and aldosterone, as well as microbiota interaction and immune network in the intestine. Furthermore, two sperm-whale-specific missense mutations (Tyr393His and Leu567Val) were detected in the PSG LIPE, which has been reported to play vital roles in lipid and cholesterol metabolism. In total, 46 CYP genes and 22 HSD genes were annotated, and then mapped to sperm whale chromosomes. Furthermore, phylogenetic analysis of CYP genes in six mammals found that CYP2E1, CYP51A and CYP8 subfamilies exhibited relative expansion in the sperm whale. Our results could help understand the genetic mechanism of ambergris production, and further reveal the convergent evolution pattern among animals that produce similar odorants.
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Affiliation(s)
- Chuang Zhou
- Key Laboratory of Bioresources and Ecoenvironment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Kexin Peng
- Key Laboratory of Bioresources and Ecoenvironment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Yi Liu
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang 641000, China
| | - Rusong Zhang
- Key Laboratory of Bioresources and Ecoenvironment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Xiaofeng Zheng
- Key Laboratory of Bioresources and Ecoenvironment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Bisong Yue
- Key Laboratory of Bioresources and Ecoenvironment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Chao Du
- Baotou Teachers College, Baotou 014060, China
- Correspondence: (C.D.); (Y.W.)
| | - Yongjie Wu
- Key Laboratory of Bioresources and Ecoenvironment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, China
- Correspondence: (C.D.); (Y.W.)
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8
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Hartz P, Fehlmann T, Wagenpfeil G, Unger MM, Bernhardt R. A CYPome-wide study reveals new potential players in the pathogenesis of Parkinson's disease. Front Pharmacol 2023; 13:1094265. [PMID: 36744208 PMCID: PMC9892771 DOI: 10.3389/fphar.2022.1094265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 12/22/2022] [Indexed: 01/20/2023] Open
Abstract
Genetic and environmental factors lead to the manifestation of Parkinson's disease (PD) but related mechanisms are only rudimentarily understood. Cytochromes P450 (P450s) are involved in the biotransformation of toxic compounds and in many physiological processes and thus predestinated to be involved in PD. However, so far only SNPs (single nucleotide polymorphisms) in CYP2D6 and CYP2E1 have been associated with the susceptibility of PD. Our aim was to evaluate the role of all 57 human P450s and their redox partners for the etiology and pathophysiology of PD and to identify novel potential players which may lead to the identification of new biomarkers and to a causative treatment of PD. The PPMI (Parkinson's Progression Markers Initiative) database was used to extract the gene sequences of all 57 P450s and their three redox partners to analyze the association of SNPs with the occurrence of PD. Applying statistical analyses of the data, corresponding odds ratios (OR) and confidence intervals (CI) were calculated. We identified SNPs significantly over-represented in patients with a genetic predisposition for PD (GPD patients) or in idiopathic PD (IPD patients) compared to HC (healthy controls). Xenobiotic-metabolizing P450s show a significant accumulation of SNPs in PD patients compared with HC supporting the role of toxic compounds in the pathogenesis of PD. Moreover, SNPs with high OR values (>5) in P450s catalyzing the degradation of cholesterol (CYP46A1, CY7B1, CYP39A1) indicate a prominent role of cholesterol metabolism in the brain for PD risk. Finally, P450s participating in the metabolism of eicosanoids show a strong over-representation of SNPs in PD patients underlining the effect of inflammation on the pathogenesis of PD. Also, the redox partners of P450 show SNPs with OR > 5 in PD patients. Taken together, we demonstrate that SNPs in 26 out of 57 P450s are at least 5-fold over-represented in PD patients suggesting these P450s as new potential players in the pathogenesis of PD. For the first time exceptionally high OR values (up to 12.9) were found. This will lead to deeper insight into the origin and development of PD and may be applied to develop novel strategies for a causative treatment of this disease.
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Affiliation(s)
- Philip Hartz
- Institut für Biochemie, Fachbereich Biologie, Universität des Saarlandes, Naturwissenschaftlich-Technische Fakultät, Saarbrücken, Germany
| | - Tobias Fehlmann
- Institut für Klinische Bioinformatik, Universität des Saarlandes, Saarbrücken, Germany
| | - Gudrun Wagenpfeil
- Institut für Medizinische Biometrie, Epidemiologie und Medizinische Informatik, Universität des Saarlandes, Homburg, Germany
| | - Marcus Michael Unger
- KLinik für Neurologie, Fachbereich Klinische Medizin, Universität des Saarlandes, Homburg, Germany,Klinik für Neurologie, SHG Kliniken Sonnenberg, Saarbrücken, Germany,*Correspondence: Marcus Michael Unger, ; Rita Bernhardt,
| | - Rita Bernhardt
- Institut für Biochemie, Fachbereich Biologie, Universität des Saarlandes, Naturwissenschaftlich-Technische Fakultät, Saarbrücken, Germany,*Correspondence: Marcus Michael Unger, ; Rita Bernhardt,
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D MO, C TZ, R SP. Human orphan cytochromes P450: An update. Curr Drug Metab 2022; 23:CDM-EPUB-128186. [PMID: 36503398 DOI: 10.2174/1389200224666221209153032] [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: 08/05/2022] [Revised: 10/25/2022] [Accepted: 11/11/2022] [Indexed: 12/14/2022]
Abstract
Orphan cytochromes P450 (CYP) are enzymes whose biological functions and substrates are unknown. However, the use of new experimental strategies has allowed obtaining more information about their relevance in the metabolism of endogenous and exogenous compounds. Likewise, the modulation of their expression and activity has been associated with pathogenesis and prognosis in different diseases. In this work, we review the regulatory pathways and the possible role of orphan CYP to provide evidence that allow us to stop considering some of them as orphan enzymes and to propose them as possible therapeutic targets in the design of new strategies for the treatment of diseases associated with CYP-mediated metabolism.
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Affiliation(s)
- Molina-Ortiz D
- Laboratorio de Toxicología Genética, Instituto Nacional de Pediatría, Coyoacán, Mexico City, México, 04530
| | - Torres-Zárate C
- Laboratorio de Toxicología Genética, Instituto Nacional de Pediatría, Coyoacán, Mexico City, México, 04530
| | - Santes-Palacios R
- Laboratorio de Toxicología Genética, Instituto Nacional de Pediatría, Coyoacán, Mexico City, México, 04530
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10
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Long F, Wang D, Su Q, Zhang Y, Li J, Xia S, Wang H, Wu Y, Qu Q. CYP4 subfamily V member 2 (CYP4V2) polymorphisms were associated with ischemic stroke in Chinese Han population. BMC Med Genomics 2022; 15:246. [DOI: 10.1186/s12920-022-01393-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 11/08/2022] [Indexed: 11/29/2022] Open
Abstract
Abstract
Background
CYP4 subfamily V member 2 (CYP4V2) polymorphisms are related to venous thromboembolism. However, the influence of CYP4V2 polymorphisms on the susceptibility to ischemic stroke (IS) remains undetermined.
Methods
We selected and genotyped five polymorphisms of CYP4V2 in 575 cases and 575 controls to test whether CYP4V2 variants were associated with the risk for IS in a Chinese Han population. Genotyping of CYP4V2 polymorphisms was performed using the Agena MassARRAY platform. Logistic regression analysis was used to assess the association between CYP4V2 polymorphisms and IS risk by calculating odds ratios (ORs) and 95% confidence interval (CI). False-positive report probability analysis was applied to assess the noteworthy relationship of the significant findings.
Results
CYP4V2 rs1398007 might be a risk factor for IS (OR = 1.34, 95% CI 1.05–1.71, p = 0.009). Specially, confounding factors (age, gender, smoking and drinking status) might affect the relationship between rs1398007 and IS susceptibility. Moreover, rs1053094 and rs56413992 were associated with IS risk in males. Multifactor dimensionality reduction analysis showed the combination of rs13146272 and rs3736455 had the strongest interaction effect (information gain value of 0.40%). Furthermore, genotypes of rs1398007 (p = 0.006) and rs1053094 (p = 0.044) were associated with the levels of high-density lipoprotein cholesterol (HDL-C) among healthy controls.
Conclusion
Our results first provided evidence that CYP4V2 rs1398007 might be a risk factor for IS, which provides instructive clues for studying the mechanisms of CYP4V2 to the pathogenesis of IS.
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Wu J, Sun Z, Yang S, Fu J, Fan Y, Wang N, Hu J, Ma L, Peng C, Wang Z, Lee K, He JC, Li Q. Kidney single-cell transcriptome profile reveals distinct response of proximal tubule cells to SGLT2i and ARB treatment in diabetic mice. Mol Ther 2022; 30:1741-1753. [PMID: 34678510 PMCID: PMC9077318 DOI: 10.1016/j.ymthe.2021.10.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/30/2021] [Accepted: 10/13/2021] [Indexed: 12/20/2022] Open
Abstract
Angiotensin receptor blockers (ARBs) and sodium-glucose cotransporter 2 inhibitors (SGLT2i) have been used as the standard therapy for patients with diabetic kidney disease (DKD). However, how these two drugs possess additive renoprotective effects remains unclear. Here, we conducted single-cell RNA sequencing to profile the kidney cell transcriptome of db/db mice treated with vehicle, ARBs, SGLT2i, or ARBs plus SGLT2i, using db/m mice as control. We identified 10 distinct clusters of kidney cells with predominant proximal tubular (PT) cells. We found that ARBs had more anti-inflammatory and anti-fibrotic effects, while SGLT2i affected more mitochondrial function in PT. We also identified a new PT subcluster, was increased in DKD, but reversed by the treatments. This new subcluster was also confirmed by immunostaining of mouse and human kidneys with DKD. Together, our study reveals kidney cell-specific gene signatures in response to ARBs and SGLT2i and identifies a new PT subcluster, which provides new insight into the pathogenesis of DKD.
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Affiliation(s)
- Jinshan Wu
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zeguo Sun
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, NY 10029, USA
| | - Shumin Yang
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Jia Fu
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, NY 10029, USA
| | - Ying Fan
- Department of Nephrology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Niansong Wang
- Department of Nephrology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Jinbo Hu
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Linqiang Ma
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Chuan Peng
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zhihong Wang
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Kyung Lee
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, NY 10029, USA
| | - John Cijiang He
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, NY 10029, USA; Renal Program, James J Peters VA Medical Center at Bronx, NY 10468, USA.
| | - Qifu Li
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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12
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Wang J, Zhang Y, Zhang Z, Yu W, Li A, Gao X, Lv D, Zheng H, Kou X, Xue Z. Toxicology of respiratory system: Profiling chemicals in PM 10 for molecular targets and adverse outcomes. ENVIRONMENT INTERNATIONAL 2022; 159:107040. [PMID: 34922181 DOI: 10.1016/j.envint.2021.107040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 11/13/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Numerous studies have shown that the increasing trend of respiratory diseases have been closely associated with the endogenous toxic chemicals (polycyclic aromatic hydrocarbons, heavy metal ions, etc.) in PM10. In the present study, we aim to determine the strong correlations between the chemicals in PM10 and the adverse consequences. We used the ChemView DB, the ToxRef DB and a comprehensive literature analysis to collect, identify, and evaluate the chemicals in PM10 and their adverse effects on respiratory system, and then used the ToxCast DB to analyze their bioactivity and key targets through 1192 molecular targets and cell characteristic endpoints. Meanwhile, the bioinformatics analysis were carried out on the molecular targets to screen out prevention and treatment targets. A total of 310 chemicals related to the respiratory system were identified. An unsupervised two-directional heatmap was constructed based on hierarchical clustering of 227 chemicals by their effect scores. A subset of 253 chemicals with respiratory system toxicity had in vitro bioactivity on 318 molecular targets that could be described, clustered and annotated in the heatmap and bipartite network, which were analyzed based on the protein information in UniProt KB database and the software of GO, STRING, and KEGG. These results showed that the chemicals in PM10 have strong correlation with different types of respiratory system injury. The main pathways of respiratory system injury caused by PM10 are the Calcium signaling pathway, MAPK signaling pathway, and PI3K-AKT signaling pathway, and the core proteins in which are likely to be the molecular targets for the prevention and treatment of damage caused by PM10.
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Affiliation(s)
- Junyu Wang
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350 Tianjin, China
| | - Yixia Zhang
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350 Tianjin, China
| | - Zhijun Zhang
- National Engineering Technology Research Center for Preservation of Agricultural Products, Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products, Tianjin 300384, China
| | - Wancong Yu
- Biotechnology Research Institute, Tianjin Academy of Agricultural Sciences, Tianjin 300384, China
| | - Ang Li
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350 Tianjin, China
| | - Xin Gao
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350 Tianjin, China
| | - Danyu Lv
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350 Tianjin, China
| | - Huaize Zheng
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350 Tianjin, China
| | - Xiaohong Kou
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350 Tianjin, China.
| | - Zhaohui Xue
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350 Tianjin, China.
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13
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Nuernberger V, Mortoga S, Metzendorf C, Burkert C, Ehricke K, Knuth E, Zimmer J, Singer S, Nath N, Karim M, Yasser M, Calvisi DF, Dombrowski F, Ribback S. Hormonally Induced Hepatocellular Carcinoma in Diabetic Wild Type and Carbohydrate Responsive Element Binding Protein Knockout Mice. Cells 2021; 10:2787. [PMID: 34685767 PMCID: PMC8534692 DOI: 10.3390/cells10102787] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/08/2021] [Accepted: 10/12/2021] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE In the rat, the pancreatic islet transplantation model is an established method to induce hepatocellular carcinomas (HCC), due to insulin-mediated metabolic and molecular alterations like increased glycolysis and de novo lipogenesis and the oncogenic AKT/mTOR pathway including upregulation of the transcription factor Carbohydrate-response element-binding protein (ChREBP). ChREBP could therefore represent an essential oncogenic co-factor during hormonally induced hepatocarcinogenesis. METHODS Pancreatic islet transplantation was implemented in diabetic C57Bl/6J (wild type, WT) and ChREBP-knockout (KO) mice for 6 and 12 months. Liver tissue was examined using histology, immunohistochemistry, electron microscopy and Western blot analysis. Finally, we performed NGS-based transcriptome analysis between WT and KO liver tumor tissues. RESULTS Three hepatocellular carcinomas were detectable after 6 and 12 months in diabetic transplanted WT mice, but only one in a KO mouse after 12 months. Pre-neoplastic clear cell foci (CCF) were also present in liver acini downstream of the islets in WT and KO mice. In KO tumors, glycolysis, de novo lipogenesis and AKT/mTOR signalling were strongly downregulated compared to WT lesions. Extrafocal liver tissue of diabetic, transplanted KO mice revealed less glycogen storage and proliferative activity than WT mice. From transcriptome analysis, we identified a set of transcripts pertaining to metabolic, oncogenic and immunogenic pathways that are differentially expressed between tumors of WT and KO mice. Of 315 metabolism-associated genes, we observed 199 genes that displayed upregulation in the tumor of WT mice, whereas 116 transcripts showed their downregulated expression in KO mice tumor. CONCLUSIONS The pancreatic islet transplantation model is a suitable method to study hormonally induced hepatocarcinogenesis also in mice, allowing combination with gene knockout models. Our data indicate that deletion of ChREBP delays insulin-induced hepatocarcinogenesis, suggesting a combined oncogenic and lipogenic function of ChREBP along AKT/mTOR-mediated proliferation of hepatocytes and induction of hepatocellular carcinoma.
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MESH Headings
- Animals
- Basic Helix-Loop-Helix Leucine Zipper Transcription Factors/metabolism
- Carcinogenesis/metabolism
- Carcinogenesis/pathology
- Carcinoma, Hepatocellular/blood
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/pathology
- Carcinoma, Hepatocellular/ultrastructure
- Cell Proliferation
- Diabetes Mellitus, Experimental/blood
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/metabolism
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Glycogen/metabolism
- Glycolysis
- Hormones/adverse effects
- Lipogenesis
- Liver/metabolism
- Liver/pathology
- Liver Neoplasms/blood
- Liver Neoplasms/metabolism
- Liver Neoplasms/pathology
- Liver Neoplasms/ultrastructure
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Mice
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Affiliation(s)
- Vincent Nuernberger
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
| | - Sharif Mortoga
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
| | - Christoph Metzendorf
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
- Department of Immunology, Genetics and Pathology, Uppsala University, 75108 Uppsala, Sweden
| | - Christian Burkert
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
| | - Katrina Ehricke
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
| | - Elisa Knuth
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
| | - Jenny Zimmer
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
| | - Stephan Singer
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
- Institut fuer Pathologie, Universitaetsklinikum Tübingen, 72076 Tübingen, Germany
| | - Neetika Nath
- Institut fuer Bioinformatik, Universitaetsmedizin Greifswald, 17475 Greifswald, Germany;
| | - Majedul Karim
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
| | - Mohd Yasser
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
| | - Diego F. Calvisi
- Institut fuer Pathologie, Universitaetsklinikum Regensburg, 93053 Regensburg, Germany;
| | - Frank Dombrowski
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
| | - Silvia Ribback
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (V.N.); (S.M.); (C.M.); (C.B.); (K.E.); (E.K.); (J.Z.); (S.S.); (M.K.); (M.Y.); (F.D.)
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14
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Hemmat N, Asadzadeh H, Asadzadeh Z, Shadbad MA, Baradaran B. The Analysis of Herpes Simplex Virus Type 1 (HSV-1)-Encoded MicroRNAs Targets: A Likely Relationship of Alzheimer's Disease and HSV-1 Infection. Cell Mol Neurobiol 2021; 42:2849-2861. [PMID: 34661780 DOI: 10.1007/s10571-021-01154-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 10/01/2021] [Indexed: 10/20/2022]
Abstract
Alzheimer's disease (AD), the most frequently diagnosed dementia, is a senile neurodegenerative disorder characterized by amnesia and cognitive dysfunction. Unfortunately, there are still no successful strategies to prevent AD progression. Thus, the vast majority of research focuses on recognizing risk factors for developing and progressing this disease. Human spirochetes, fungi, Borrelia burgdorferi, Chlamydophila pneumoniae, Helicobacter pylori, and human herpes simplex virus type 1 (HSV-1) have all been implicated in the development and progression of AD. Identifying microRNAs (miRs) encoded by DNA viruses has indicated that viruses can be evolved to exploit RNA silencing to regulate host and viral genes. Similar to host miR, v-miR can interact with the 3' untranslated region (UTR) of the target mRNA to regulate gene expression. Although HSV-1 can also encode various miRs, their significance in the development and progression of AD is still unclear. In the present study, utilizing the bioinformatics approach (R software and related packages), we analyzed the differentially expressed genes (DEGs) in AD samples (grey matter) of GSE37263 dataset obtained from the NCBI Gene Expression Omnibus (GEO). Then, the sequences of HSV-1-encoded-miRs were retrieved from miRbase, and their targets were predicted by miRDB. Afterward, the common genes between downregulated DEGs in AD and targets of HSV-1-encoded miRs were identified to shed new light on the relationship between HSV-1 infection and AD development. Our results have indicated that HSV-1-encoded-miRs can target the downregulated DEGs in AD, and these aberrant interactions can offer valuable diagnostic/prognostic biomarkers for affected patients.
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Affiliation(s)
- Nima Hemmat
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Haniyeh Asadzadeh
- Department of Psychology, Ardabil Branch of Islamic Azad University, Ardabil, Iran
| | - Zahra Asadzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Abdoli Shadbad
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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15
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Ni KD, Liu JY. The Functions of Cytochrome P450 ω-hydroxylases and the Associated Eicosanoids in Inflammation-Related Diseases. Front Pharmacol 2021; 12:716801. [PMID: 34594219 PMCID: PMC8476763 DOI: 10.3389/fphar.2021.716801] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 09/01/2021] [Indexed: 12/17/2022] Open
Abstract
The cytochrome P450 (CYP) ω-hydroxylases are a subfamily of CYP enzymes. While CYPs are the main metabolic enzymes that mediate the oxidation reactions of many endogenous and exogenous compounds in the human body, CYP ω-hydroxylases mediate the metabolism of multiple fatty acids and their metabolites via the addition of a hydroxyl group to the ω- or (ω-1)-C atom of the substrates. The substrates of CYP ω-hydroxylases include but not limited to arachidonic acid, docosahexaenoic acid, eicosapentaenoic acid, epoxyeicosatrienoic acids, leukotrienes, and prostaglandins. The CYP ω-hydroxylases-mediated metabolites, such as 20-hyroxyleicosatrienoic acid (20-HETE), 19-HETE, 20-hydroxyl leukotriene B4 (20-OH-LTB4), and many ω-hydroxylated prostaglandins, have pleiotropic effects in inflammation and many inflammation-associated diseases. Here we reviewed the classification, tissue distribution of CYP ω-hydroxylases and the role of their hydroxylated metabolites in inflammation-associated diseases. We described up-regulation of CYP ω-hydroxylases may be a pathogenic mechanism of many inflammation-associated diseases and thus CYP ω-hydroxylases may be a therapeutic target for these diseases. CYP ω-hydroxylases-mediated eicosanods play important roles in inflammation as pro-inflammatory or anti-inflammatory mediators, participating in the process stimulated by cytokines and/or the process stimulating the production of multiple cytokines. However, most previous studies focused on 20-HETE,and further studies are needed for the function and mechanisms of other CYP ω-hydroxylases-mediated eicosanoids. We believe that our studies of CYP ω-hydroxylases and their associated eicosanoids will advance the translational and clinal use of CYP ω-hydroxylases inhibitors and activators in many diseases.
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Affiliation(s)
- Kai-Di Ni
- Center for Novel Target and Therapeutic Intervention, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Jun-Yan Liu
- Center for Novel Target and Therapeutic Intervention, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
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16
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Kozaczek M, Bottje W, Albataineh D, Hakkak R. Effects of Short- and Long-Term Soy Protein Feeding on Hepatic Cytochrome P450 Expression in Obese Nonalcoholic Fatty Liver Disease Rat Model. Front Nutr 2021; 8:699620. [PMID: 34262928 PMCID: PMC8273275 DOI: 10.3389/fnut.2021.699620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/03/2021] [Indexed: 12/16/2022] Open
Abstract
Obesity can lead to chronic health complications such as nonalcoholic fatty liver disease (NAFLD). NAFLD is characterized by lipid aggregation in the hepatocytes and inflammation of the liver tissue as a consequence that can contribute to the development of cirrhosis and hepatocellular carcinoma (HCC). Previously, we reported that feeding obese Zucker rats with soy protein isolate (SPI) can reduce liver steatosis when compared with a casein (CAS) diet as a control. However, the effects of SPI on cytochrome P450 (CYP) in an obese rat model are less known. In addition, there is a lack of information concerning the consumption of soy protein in adolescents and its effect in reducing the early onset of NAFLD in this group. Our main goal was to understand if the SPI diet had any impact on the hepatic CYP gene expression when compared with the CAS diet. For this purpose, we used the transcriptomic data obtained in a previous study in which liver samples were collected from obese rats after short-term (eight-week) and long-term (16-week) feeding of SPI (n = 8 per group). To analyze this RNAseq data, we used Ingenuity Pathway Analysis (IPA) software. Comparing short- vs long-term feeding revealed an increase in the number of downregulated CYP genes from three at 8 weeks of SPI diet to five at 16 weeks of the same diet (P ≤ 0.05). On the other hand, upregulated CYP gene numbers showed a small increase in the long-term SPI diet compared to the short-term SPI diet, from 14 genes at 8 weeks to 17 genes at 16 weeks (P ≤ 0.05). The observed changes may have an important role in the attenuation of liver steatosis.
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Affiliation(s)
- Melisa Kozaczek
- Department of Dietetics and Nutrition, University of Arkansas for Medical Sciences, Little Rock, AR, United States.,Department of Poultry Science and The Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States.,Arkansas Children's Research Institute, Little Rock, AR, United States
| | - Walter Bottje
- Department of Poultry Science and The Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Diyana Albataineh
- Department of Poultry Science and The Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Reza Hakkak
- Department of Dietetics and Nutrition, University of Arkansas for Medical Sciences, Little Rock, AR, United States.,Arkansas Children's Research Institute, Little Rock, AR, United States.,Department of Pediatrics, University of Arkansas for Medical Sciences, Arkansas Children's Hospital, Little Rock, AR, United States
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17
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Li S, Wang C, Zhang X, Su W. Cytochrome P450 Omega-Hydroxylase 4a14 Attenuates Cholestatic Liver Fibrosis. Front Physiol 2021; 12:688259. [PMID: 34135776 PMCID: PMC8201794 DOI: 10.3389/fphys.2021.688259] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 04/22/2021] [Indexed: 12/12/2022] Open
Abstract
Background Cholestasis is a pathological condition involving obstruction of bile secretion and excretion that results in hepatotoxicity, inflammation, fibrosis, cirrhosis, and eventually liver failure. Common bile duct ligation (BDL) model is a well-established murine model to mimic cholestatic liver fibrosis. We previously reported that cytochrome P450 omega-hydroxylase 4a14 (Cyp4a14) plays an important role in the pathogenesis of non-alcoholic fatty liver disease (NAFLD)-related fibrosis. The goal of this study was to determine the role of Cyp4a14 in cholestatic-induced liver fibrosis. Methods C57BL/6 mice were subjected to BDL for 14 days, and Cyp4a14 mRNA and protein levels were examined and compared with those of the sham group. Cyp4a14 knockout mice and adeno-associated virus (AAV)-mediated overexpression of Cyp4a14 in C57BL/6 mice underwent BDL and liver histology, and key fibrosis markers were examined. Results Both hepatic Cyp4a14 mRNA and protein levels were markedly reduced in BDL liver compared with the time-matched sham group. Cyp4a14 gene-deficient mice aggravates whereas its overexpression alleviates BDL-induced hepatic fibrosis, which were determined by liver function, liver histology, and levels of key fibrotic markers including α-smooth muscle actin (α-SMA), transforming growth factor-β1 (TGF-β1), and collagen 1a2 (Col1a2). Conclusion Cyp4a14 exerts a contrasting role in different hepatic fibrosis models. Strategies that enhance Cyp4a14 activity may be potential strategies to cholestatic related liver fibrosis.
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Affiliation(s)
- Sha Li
- Medical College, Hebei University of Engineering, Handan, China.,Hebei Key Laboratory of Applied Basic Research of Blood Purification, Affiliated Hospital of Hebei Engineering University, Handan, China.,Health Science Center, Shenzhen University, Shenzhen, China
| | - Chenghai Wang
- Hebei Key Laboratory of Applied Basic Research of Blood Purification, Affiliated Hospital of Hebei Engineering University, Handan, China
| | - Xiaxia Zhang
- Department of Gastroenterology and Hepatology, Handan Central Hospital, Handan, China
| | - Wen Su
- Health Science Center, Shenzhen University, Shenzhen, China.,Shenzhen Key Laboratory of Metabolism and Cardiovascular Homeostasis, Shenzhen, China
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18
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Trivedi A, Wahlstrom J, Mackowski M, Dutta S, Lee E. Pharmacokinetics, Disposition, and Biotransformation of [ 14C]Omecamtiv Mecarbil in Healthy Male Subjects after a Single Intravenous or Oral Dose. Drug Metab Dispos 2021; 49:619-628. [PMID: 34011533 DOI: 10.1124/dmd.121.000444] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/26/2021] [Indexed: 11/22/2022] Open
Abstract
Omecamtiv mecarbil (OM) is a novel cardiac myosin activator that is currently in clinical development for the treatment of heart failure. The absorption and disposition of [14C]OM (60 µCi) were studied after a single intravenous infusion (35 mg over 1 hour) or oral solution dose (35 mg) in 14 healthy male subjects. Mean recovery of the administered [14C]OM dose was 85.1% and 86.5% over 336 hours for the intravenous and oral routes, respectively. After intravenous dosing, 47.8% and 37.3% of the dose was recovered in urine and feces, respectively; after oral dosing, 48.6% and 38.0% was recovered in urine and feces, respectively. Unchanged OM accounted for a minor percentage of radioactivity in urine (mean 7.7% of dose) and feces (mean 4.1% of dose) across all subjects. The major metabolites recovered in urine and feces were M3 (decarbamoylation product) and sequential metabolite M4 (lactam of M3), which accounted for means of 26.5% and 11.6% of the administered dose, respectively. The CYP4 family of enzymes was primarily responsible for the formation of M3 based on in vitro studies. Other metabolic pathways accounted for 14.9% of the administered dose. In pooled plasma, OM, M3, and M4 accounted for 83.8%, 6.0%, and 3.3% of the total [14C]OM-related materials. No other plasma metabolites constituted more than 3% of the administered dose. The bioavailability for OM solution was 93.5% after rapid and extensive absorption. SIGNIFICANCE STATEMENT: This study characterized the absorption and disposition of OM, a novel small molecule being developed for the treatment of heart failure. OM was primarily cleared through metabolism by the CYP4 family through oxidative cleavage of a terminal carbamate moiety that resembles hydrolysis.
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19
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Nguyen-Vo TH, Nguyen L, Do N, Le PH, Nguyen TN, Nguyen BP, Le L. Predicting Drug-Induced Liver Injury Using Convolutional Neural Network and Molecular Fingerprint-Embedded Features. ACS OMEGA 2020; 5:25432-25439. [PMID: 33043223 PMCID: PMC7542839 DOI: 10.1021/acsomega.0c03866] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 09/11/2020] [Indexed: 05/10/2023]
Abstract
As a critical issue in drug development and postmarketing safety surveillance, drug-induced liver injury (DILI) leads to failures in clinical trials as well as retractions of on-market approved drugs. Therefore, it is important to identify DILI compounds in the early-stages through in silico and in vivo studies. It is difficult using conventional safety testing methods, since the predictive power of most of the existing frameworks is insufficiently effective to address this pharmacological issue. In our study, we employ a natural language processing (NLP) inspired computational framework using convolutional neural networks and molecular fingerprint-embedded features. Our development set and independent test set have 1597 and 322 compounds, respectively. These samples were collected from previous studies and matched with established chemical databases for structural validity. Our study comes up with an average accuracy of 0.89, Matthews's correlation coefficient (MCC) of 0.80, and an AUC of 0.96. Our results show a significant improvement in the AUC values compared to the recent best model with a boost of 6.67%, from 0.90 to 0.96. Also, based on our findings, molecular fingerprint-embedded featurizer is an effective molecular representation for future biological and biochemical studies besides the application of classic molecular fingerprints.
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Affiliation(s)
- Thanh-Hoang Nguyen-Vo
- School of Mathematics
and Statistics, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Loc Nguyen
- Computational Biology Center, International University—VNU HCMC, Ho Chi Minh City 700000, Vietnam
| | - Nguyet Do
- Computational Biology Center, International University—VNU HCMC, Ho Chi Minh City 700000, Vietnam
| | - Phuc H. Le
- Computational Biology Center, International University—VNU HCMC, Ho Chi Minh City 700000, Vietnam
| | - Thien-Ngan Nguyen
- Computational Biology Center, International University—VNU HCMC, Ho Chi Minh City 700000, Vietnam
| | - Binh P. Nguyen
- School of Mathematics
and Statistics, Victoria University of Wellington, Wellington 6140, New Zealand
- . Phone: (+64) 4 463 5233. ext 8896
| | - Ly Le
- Computational Biology Center, International University—VNU HCMC, Ho Chi Minh City 700000, Vietnam
- Vingroup Big Data Institute, Ha Noi 100000, Vietnam
- . Phone: (+84) 906-578-836
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Gao H, Cao Y, Xia H, Zhu X, Jin Y. CYP4A11 is involved in the development of nonalcoholic fatty liver disease via ROS‑induced lipid peroxidation and inflammation. Int J Mol Med 2020; 45:1121-1129. [PMID: 32124935 PMCID: PMC7053872 DOI: 10.3892/ijmm.2020.4479] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 12/16/2019] [Indexed: 12/23/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a fat metabolism disorder that occurs in liver cells. The development of NAFLD is considered to be associated with hepatic oxidative stress. The present study aimed to investigate the role of cytochrome P450 4A11 (CYP4A11) in the pathogenesis of NAFLD. The levels of plasma CYP4A11 and lipid peroxidation products levels exhibited a high correlation, and were increased significantly compared with those from normal subjects. Further in vitro studies demonstrated that the expression levels of CYP4A11 and the content of reactive oxygen species (ROS) were increased in free fatty acid (FFA)-stimulated HepG2 cells. Clofibrate, a CYP4A11 inducer, aggravated cell damage. Opposite results were observed for the CYP4A11 inhibitor HET0016, which attenuated apoptosis in FFA-treated cells. Furthermore, CYP4A11 gene overexpression and silencing were used to investigate the effects on inflammatory cytokine secretion. The data demonstrated that CYP4A11 promoted an increase in the mRNA expression of tumor necrosis factor α, interleukin (IL)-1β and IL-6 in response to FFA. In addition, western blot analysis highlighted that CYP4A11 caused an upregulation of phosphorylated p65 levels and therefore affected the NF-κB signaling pathway. The data demonstrated that CYP4A11 may metabolize fatty acids to promote the production of ROS and accelerate the progression of NAFLD.
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Affiliation(s)
- Huifang Gao
- Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yaru Cao
- Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Hongguang Xia
- Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Xiangyu Zhu
- Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yong Jin
- Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui 230032, P.R. China
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21
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Thesseling FA, Hutter MC, Wiek C, Kowalski JP, Rettie AE, Girhard M. Novel insights into oxidation of fatty acids and fatty alcohols by cytochrome P450 monooxygenase CYP4B1. Arch Biochem Biophys 2020; 679:108216. [PMID: 31801692 DOI: 10.1016/j.abb.2019.108216] [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: 10/23/2019] [Revised: 11/26/2019] [Accepted: 11/29/2019] [Indexed: 10/25/2022]
Abstract
CYP4B1 is an enigmatic mammalian cytochrome P450 monooxygenase acting at the interface between xenobiotic and endobiotic metabolism. A prominent CYP4B1 substrate is the furan pro-toxin 4-ipomeanol (IPO). Our recent investigation on metabolism of IPO related compounds that maintain the furan functionality of IPO while replacing its alcohol group with alkyl chains of varying structure and length revealed that, in addition to cytotoxic reactive metabolite formation (resulting from furan activation) non-cytotoxic ω-hydroxylation at the alkyl chain can also occur. We hypothesized that substrate reorientations may happen in the active site of CYP4B1. These findings prompted us to re-investigate oxidation of unsaturated fatty acids and fatty alcohols with C9-C16 carbon chain length by CYP4B1. Strikingly, we found that besides the previously reported ω- and ω-1-hydroxylations, CYP4B1 is also capable of α-, β-, γ-, and δ-fatty acid hydroxylation. In contrast, fatty alcohols of the same chain length are exclusively hydroxylated at ω, ω-1, and ω-2 positions. Docking results for the corresponding CYP4B1-substrate complexes revealed that fatty acids can adopt U-shaped bonding conformations, such that carbon atoms in both arms may approach the heme-iron. Quantum chemical estimates of activation energies of the hydrogen radical abstraction by the reactive compound 1 as well as electron densities of the substrate orbitals led to the conclusion that fatty acid and fatty alcohol oxidations by CYP4B1 are kinetically controlled reactions.
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Affiliation(s)
- Florian A Thesseling
- Institute of Biochemistry, Heinrich-Heine University, 40225, Düsseldorf, Germany.
| | - Michael C Hutter
- Center for Bioinformatics, Saarland University, 66123, Saarbrücken, Germany.
| | - Constanze Wiek
- Department of Otorhinolaryngology and Head/Neck Surgery, Heinrich-Heine University, 40225, Düsseldorf, Germany.
| | - John P Kowalski
- Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, WA, 98195, USA.
| | - Allan E Rettie
- Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, WA, 98195, USA.
| | - Marco Girhard
- Institute of Biochemistry, Heinrich-Heine University, 40225, Düsseldorf, Germany.
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Sharifian S, Homaei A, Kamrani E, Etzerodt T, Patel S. New insights on the marine cytochrome P450 enzymes and their biotechnological importance. Int J Biol Macromol 2020; 142:811-821. [DOI: 10.1016/j.ijbiomac.2019.10.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/02/2019] [Accepted: 10/02/2019] [Indexed: 01/09/2023]
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Molecular Functionality of Cytochrome P450 4 (CYP4) Genetic Polymorphisms and Their Clinical Implications. Int J Mol Sci 2019; 20:ijms20174274. [PMID: 31480463 PMCID: PMC6747359 DOI: 10.3390/ijms20174274] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/27/2019] [Accepted: 08/28/2019] [Indexed: 01/03/2023] Open
Abstract
Enzymes in the cytochrome P450 4 (CYP4) family are involved in the metabolism of fatty acids, xenobiotics, therapeutic drugs, and signaling molecules, including eicosanoids, leukotrienes, and prostanoids. As CYP4 enzymes play a role in the maintenance of fatty acids and fatty-acid-derived bioactive molecules within a normal range, they have been implicated in various biological functions, including inflammation, skin barrier, eye function, cardiovascular health, and cancer. Numerous studies have indicated that genetic variants of CYP4 genes cause inter-individual variations in metabolism and disease susceptibility. Genetic variants of CYP4A11, 4F2 genes are associated with cardiovascular diseases. Mutations of CYP4B1, CYP4Z1, and other CYP4 genes that generate 20-HETE are a potential risk for cancer. CYP4V2 gene variants are associated with ocular disease, while those of CYP4F22 are linked to skin disease and CYP4F3B is associated with the inflammatory response. The present study comprehensively collected research to provide an updated view of the molecular functionality of CYP4 genes and their associations with human diseases. Functional analysis of CYP4 genes with clinical implications is necessary to understand inter-individual variations in disease susceptibility and for the development of alternative treatment strategies.
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24
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Zhou C, Shen D, Li C, Cai W, Liu S, Yin H, Shi S, Cao M, Zhang S. Comparative Transcriptomic and Proteomic Analyses Identify Key Genes Associated With Milk Fat Traits in Chinese Holstein Cows. Front Genet 2019; 10:672. [PMID: 31456815 PMCID: PMC6700372 DOI: 10.3389/fgene.2019.00672] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 06/27/2019] [Indexed: 12/12/2022] Open
Abstract
Milk fat is the most important energy substance in milk and contributes to its quality and health benefits. However, the genetic mechanisms underlying milk fat synthesis are not fully understood. The development of RNA sequencing and tandem mass tag technologies has facilitated the identification of eukaryotic genes associated with complex traits. In this study, we used these methods to obtain liver transcriptomic and proteomic profiles of Chinese Holstein cows (n = 6). Comparative analyses of cows with extremely high vs. low milk fat percentage phenotypes yielded 321 differentially expressed genes (DEGs) and 76 differentially expressed proteins (DEPs). Functional annotation of these DEGs and DEPs revealed 26 genes that were predicted to influence lipid metabolism through insulin, phosphatidylinositol 3-kinase/Akt, mitogen-activated protein kinase, 5′ AMP-activated protein kinase, mammalian target of rapamycin, and peroxisome proliferator-activated receptor signaling pathways; these genes are considered as the most promising candidate regulators of milk fat synthesis. The findings of this study enhance the understanding of the genetic basis and molecular mechanisms of milk fat synthesis, which could lead to the development of cow breeds that produce milk with higher nutritional value.
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Affiliation(s)
- Chenghao Zhou
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture & National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Dan Shen
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture & National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Cong Li
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture & National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Wentao Cai
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture & National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shuli Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture & National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Hongwei Yin
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture & National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shaolei Shi
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture & National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Mingyue Cao
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture & National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shengli Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture & National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
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25
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Falfushynska H, Sokolov EP, Haider F, Oppermann C, Kragl U, Ruth W, Stock M, Glufke S, Winkel EJ, Sokolova IM. Effects of a common pharmaceutical, atorvastatin, on energy metabolism and detoxification mechanisms of a marine bivalve Mytilus edulis. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 208:47-61. [PMID: 30610964 DOI: 10.1016/j.aquatox.2018.12.022] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/27/2018] [Accepted: 12/28/2018] [Indexed: 05/20/2023]
Abstract
Biologically active compounds from pharmaceuticals cause concern due to their common occurrence in water and sediments of urbanized coasts and potential threat to marine organisms. Atorvastatin (ATO), a globally prescribed drug, is environmentally stable and bioavailable to marine organisms; however, the physiological and toxic effects of this drug on ecologically important coastal species are yet to be elucidated. We studied the effect of ATO (˜1.2 μg L-1) on bioenergetics (including whole-organism and mitochondrial respiration, as well as tissue energy reserves and mRNA expression of genes involved in mitochondrial biogenesis and fatty acid metabolism in the gills and the digestive gland) of a keystone bivalve Mytulis edulis (the blue mussel) from the Baltic Sea. Xenobiotic detoxification systems including activity and mRNA expression of P-glycoprotein, and Phase I and II biotransformation enzymes (cytochrome P450 monooxygenase CYP1A and glutathione transferase, GST) were also assessed in the gill and digestive gland of the mussels. Exposure to ATO caused rapid uptake and biotransformation of the drug by the mussels. Standard metabolic rate of ATO-exposed mussels increased by 56% indicating higher maintenance costs, yet no changes were detected in the respiratory capacity of isolated mitochondria. ATO exposure led to ˜60% decrease in the lysosomal membrane stability of hemocytes and ˜3-fold decrease in the whole-organism P-glycoprotein-driven and diffusional efflux of xenobiotics indicating altered membrane properties. The digestive gland was a major target of ATO toxicity in the mussels. Exposure of mussels to ATO led to depletion of lipid, carbohydrate and protein pools, and suppressed transcription of key enzymes involved in mitochondrial biogenesis (peroxisome proliferator-activated receptor gamma coactivator 1-alpha PGC-1α) and fatty acid metabolism (acetyl-CoA carboxylase and CYP4Y1) in the digestive gland. No bioenergetic disturbances were observed in the gills of ATO-exposed mussels, and elevated GST activity indicated enhanced ATO detoxification in this tissue. These data demonstrate that ATO can act as a metabolic disruptor and chemosensitizer in keystone marine bivalves and warrant further investigations of statins as emerging pollutants of concern in coastal marine ecosystems.
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Affiliation(s)
- Halina Falfushynska
- Department of Marine Biology, Institute of Biological Sciences, University of Rostock, Rostock, Germany; Department of Human Health, Physical Rehabilitation and Vital Activity, Ternopil V. Hnatiuk National Pedagogical University, Ternopil, Ukraine
| | - Eugene P Sokolov
- Leibniz Institute for Baltic Sea Research, Leibniz ScienceCampus Phosphorus Research Rostock, Warnemünde, Germany
| | - Fouzia Haider
- Department of Marine Biology, Institute of Biological Sciences, University of Rostock, Rostock, Germany
| | - Christina Oppermann
- Department of Industrial Chemistry, Institute of Chemistry, University of Rostock, Rostock, Germany
| | - Udo Kragl
- Department of Industrial Chemistry, Institute of Chemistry, University of Rostock, Rostock, Germany
| | - Wolfgang Ruth
- Department of Industrial Chemistry, Institute of Chemistry, University of Rostock, Rostock, Germany
| | - Marius Stock
- Department of Marine Biology, Institute of Biological Sciences, University of Rostock, Rostock, Germany
| | - Sabrina Glufke
- Department of Marine Biology, Institute of Biological Sciences, University of Rostock, Rostock, Germany
| | - Eileen J Winkel
- Department of Marine Biology, Institute of Biological Sciences, University of Rostock, Rostock, Germany
| | - Inna M Sokolova
- Department of Marine Biology, Institute of Biological Sciences, University of Rostock, Rostock, Germany; Department of Maritime Systems, Interdisciplinary Faculty, University of Rostock, Rostock, Germany.
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26
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Paloque L, Perez-Berezo T, Abot A, Dalloux-Chioccioli J, Bourgeade-Delmas S, Le Faouder P, Pujo J, Teste MA, François JM, Schebb NH, Mainka M, Rolland C, Blanpied C, Dietrich G, Bertrand-Michel J, Deraison C, Valentin A, Cenac N. Polyunsaturated fatty acid metabolites: biosynthesis in Leishmania and role in parasite/host interaction. J Lipid Res 2019; 60:636-647. [PMID: 30626624 DOI: 10.1194/jlr.m091736] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/08/2019] [Indexed: 12/20/2022] Open
Abstract
Inside the human host, Leishmania infection starts with phagocytosis of infective promastigotes by macrophages. In order to survive, Leishmania has developed several strategies to manipulate macrophage functions. Among these strategies, Leishmania as a source of bioactive lipids has been poorly explored. Herein, we assessed the biosynthesis of polyunsaturated fatty acid metabolites by infective and noninfective stages of Leishmania and further explored the role of these metabolites in macrophage polarization. The concentration of docosahexaenoic acid metabolites, precursors of proresolving lipid mediators, was increased in the infective stage of the parasite compared with the noninfective stage, and cytochrome P450-like proteins were shown to be implicated in the biosynthesis of these metabolites. The treatment of macrophages with lipids extracted from the infective forms of the parasite led to M2 macrophage polarization and blocked the differentiation into the M1 phenotype induced by IFN-γ. In conclusion, Leishmania polyunsaturated fatty acid metabolites, produced by cytochrome P450-like protein activity, are implicated in parasite/host interactions by promoting the polarization of macrophages into a proresolving M2 phenotype.
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Affiliation(s)
- Lucie Paloque
- UMR152 Pharma Dev, Université de Toulouse, IRD, UPS, 31400 Toulouse, France.,LCC CNRS, UPR8241, Université de Toulouse, UPS, INPT, 31400 Toulouse, France
| | - Teresa Perez-Berezo
- IRSD, Université de Toulouse, INSERM, INRA, INP-ENVT, 31024 Toulouse, France
| | - Anne Abot
- IRSD, Université de Toulouse, INSERM, INRA, INP-ENVT, 31024 Toulouse, France
| | | | | | | | - Julien Pujo
- IRSD, Université de Toulouse, INSERM, INRA, INP-ENVT, 31024 Toulouse, France
| | - Marie-Ange Teste
- LISBP Université de Toulouse, CNRS, INRA, INSA, 31400 Toulouse, France
| | | | - Nils Helge Schebb
- Faculty of Mathematics and Natural Sciences University of Wuppertal, 42119 Wuppertal, Germany
| | - Malwina Mainka
- Faculty of Mathematics and Natural Sciences University of Wuppertal, 42119 Wuppertal, Germany
| | - Corinne Rolland
- IRSD, Université de Toulouse, INSERM, INRA, INP-ENVT, 31024 Toulouse, France
| | - Catherine Blanpied
- IRSD, Université de Toulouse, INSERM, INRA, INP-ENVT, 31024 Toulouse, France
| | - Gilles Dietrich
- IRSD, Université de Toulouse, INSERM, INRA, INP-ENVT, 31024 Toulouse, France
| | | | - Céline Deraison
- IRSD, Université de Toulouse, INSERM, INRA, INP-ENVT, 31024 Toulouse, France
| | - Alexis Valentin
- UMR152 Pharma Dev, Université de Toulouse, IRD, UPS, 31400 Toulouse, France
| | - Nicolas Cenac
- IRSD, Université de Toulouse, INSERM, INRA, INP-ENVT, 31024 Toulouse, France
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27
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Wood PL. Endogenous Anti-Inflammatory Very-Long-Chain Dicarboxylic Acids: Potential Chemopreventive Lipids. Metabolites 2018; 8:E76. [PMID: 30400281 PMCID: PMC6315409 DOI: 10.3390/metabo8040076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/31/2018] [Accepted: 11/01/2018] [Indexed: 02/06/2023] Open
Abstract
In a paradigm shift, cancer research efforts are being dedicated to the discovery of chemopreventive agents. The goal of this approach is to delay or prevent the progression of augmented cell division to established cancer. Research has focused on dietary supplements, drugs, and endogenous lipids that possess anti-inflammatory properties. We undertook a lipidomics analysis of potential endogenous anti-inflammatory/anti-proliferative lipids in human plasma. We performed high-resolution mass spectrometric lipidomics analyses of plasma samples from controls and patients with colorectal, kidney, pancreatic, glioblastoma, and breast cancers. We present evidence that endogenous very-long-chain dicarboxylic acids (VLCDCA) are anti-inflammatory lipids that possess chemopreventative properties. In a family of VLCDCAs, we characterized VLCDCA 28:4, which is decreased in the plasma of patients with colorectal, kidney, and pancreatic cancers. The structure of this biomarker was validated by derivatization strategies, synthesis of the analytical standard, and tandem mass spectrometry. Our data suggest that VLCDCA 28:4 may be a useful blood biomarker for a number of cancers and that resupplying this lipid, via a prodrug for example, may offer a new anti-inflammatory therapeutic strategy for delaying or preventing the progression of cancer and other inflammatory diseases.
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Affiliation(s)
- Paul L Wood
- Metabolomics Unit, College of Veterinary Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy, Harrogate TN 37752, UK.
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28
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Eun HS, Cho SY, Lee BS, Seong IO, Kim KH. Profiling cytochrome P450 family 4 gene expression in human hepatocellular carcinoma. Mol Med Rep 2018; 18:4865-4876. [PMID: 30280198 PMCID: PMC6236316 DOI: 10.3892/mmr.2018.9526] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/25/2018] [Indexed: 01/08/2023] Open
Abstract
Cytochrome P450 family 4 (CYP4) enzymes are known as microsomal omega (ω)-hydroxylases that metabolize fatty acids, eicosanoids, vitamin D and carcinogens. Thus, CYP4 enzymes may influence tumor development and progression. The aim of the present study was to evaluate the CYP4 expression profile in hepatocellular carcinoma (HCC) and its clinical relevance. The present study obtained CYP4 mRNA expression data for 377 HCC cases from The Cancer Genome Atlas cohort and performed Kaplan‑Meier survival, Gene Ontology functional enrichment, and gene set enrichment analysis (GSEA). In addition, the level of CYP4F2 protein expression was evaluated in matched pairs of HCC and non‑tumor tissue samples and the results were correlated with the clinicopathological characteristics of HCC (n=113). HCC survival analyses indicated better overall survival in patients with high CYP4F2, CYP4F12 and CYP4V2 mRNA expression levels; the results for histological grade and Tumor‑Node‑Metastasis stage supported these results. GSEA revealed high levels of CYP4F2, CYP4F12 and CYP4V2 mRNA expression to be negatively correlated with the expression of cell cycle‑associated genes. CYP4F2 protein expression was higher in non‑neoplastic liver tissue than in HCC tissue and positively correlated with favorable pathological tumor stage (I vs. II‑IV; P=0.022) and was a good independent prognostic factor for overall survival (P=0.004). These results demonstrate that the expression levels of the genes CYP4F2, CYP4F12 and CYPV2 are favorable prognostic factors in HCC and suggest the potential predictive diagnostic and prognostic roles of CYP4F2, CYP4F12 and CYPV2 gene expression in HCC.
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Affiliation(s)
- Hyuk Soo Eun
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon 34952, Republic of Korea
| | - Sang Yeon Cho
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Byung Seok Lee
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon 34952, Republic of Korea
| | - In-Ock Seong
- Department of Pathology, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Kyung-Hee Kim
- Department of Pathology, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
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29
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Li J, Zhang H, Liu G, Tang Y, Tu Y, Li W. Computational Insight Into Vitamin K 1 ω-Hydroxylation by Cytochrome P450 4F2. Front Pharmacol 2018; 9:1065. [PMID: 30319412 PMCID: PMC6167488 DOI: 10.3389/fphar.2018.01065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 09/03/2018] [Indexed: 12/28/2022] Open
Abstract
Vitamin K1 (VK1) plays an important role in the modulation of bleeding disorders. It has been reported that ω-hydroxylation on the VK1 aliphatic chain is catalyzed by cytochrome P450 4F2 (CYP4F2), an enzyme responsible for the metabolism of eicosanoids. However, the mechanism of VK1 ω-hydroxylation by CYP4F2 has not been disclosed. In this study, we employed a combination of quantum mechanism (QM) calculations, homology modeling, molecular docking, molecular dynamics (MD) simulations, and combined quantum mechanism/molecular mechanism (QM/MM) calculations to investigate the metabolism profile of VK1 ω-hydroxylation. QM calculations based on the truncated VK1 model show that the energy barrier for ω-hydroxylation is about 6-25 kJ/mol higher than those at other potential sites of metabolism. However, results from the MD simulations indicate that hydroxylation at the ω-site is more favorable than at the other potential sites, which is in accordance with the experimental observation. The evaluation of MD simulations was further endorsed by the QM/MM calculation results. Our studies thus suggest that the active site residues of CYP4F2 play a determinant role in the ω-hydroxylation. Our results provide structural insights into the mechanism of VK1 ω-hydroxylation by CYP4F2 at the atomistic level and are helpful not only for characterizing the CYP4F2 functions but also for looking into the ω-hydroxylation mediated by other CYP4 enzymes.
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Affiliation(s)
- Junhao Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China.,Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), KTH Royal Institute of Technology, Stockholm, Sweden
| | - Hongxiao Zhang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Guixia Liu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Yun Tang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Yaoquan Tu
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), KTH Royal Institute of Technology, Stockholm, Sweden
| | - Weihua Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
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30
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Jennings GK, Hsu MH, Shock LS, Johnson EF, Hackett JC. Noncovalent interactions dominate dynamic heme distortion in cytochrome P450 4B1. J Biol Chem 2018; 293:11433-11446. [PMID: 29858244 PMCID: PMC6065186 DOI: 10.1074/jbc.ra118.004044] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 05/31/2018] [Indexed: 01/07/2023] Open
Abstract
Cytochrome P450 4B1 (4B1) functions in both xenobiotic and endobiotic metabolism. An ester linkage between Glu-310 in 4B1 and the 5-methyl group of heme facilitates preferential hydroxylation of terminal (ω) methyl groups of hydrocarbons (HCs) and fatty acids compared with ω-1 sites bearing weaker C-H bonds. This preference is retained albeit diminished 4-fold for the E310A mutant, but the reason for this is unclear. Here, a crystal structure of the E310A-octane complex disclosed that noncovalent interactions maintain heme deformation in the absence of the ester linkage. Consistent with the lower symmetry of the heme, resonance Raman (RR) spectroscopy revealed large enhancements of RR peaks for high-spin HC complexes of 4B1 and the E310A mutant relative to P450 3A4. Whereas these enhancements were diminished in RR spectra of a low-spin 4B1-N-hydroxy-N'-(4-butyl-2-methylphenyl)formamidine complex, a crystal structure indicated that this inhibitor does not alter heme ruffling. RR spectra of Fe2+-CO HC complexes revealed larger effects of HC length in E310A than in 4B1, suggesting that reduced rigidity probably underlies increased E310A-catalyzed (ω-1)-hydroxylation. Diminished effects of the HC on the position of the Fe-CO stretching mode in 4B1 suggested that the ester linkage limits substrate access to the CO. Heme ruffling probably facilitates autocatalytic ester formation by reducing inhibitory coordination of Glu-310 with the heme iron. This also positions the 5-methyl for a reaction with the proposed glutamyl radical intermediate and potentially enhances oxo-ferryl intermediate reactivity for generation of the glutamyl radical to initiate ester bond formation and ω-hydroxylation.
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Affiliation(s)
- Gareth K Jennings
- Massey Cancer Center and Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, Virginia 23298
| | - Mei-Hui Hsu
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California 92037
| | - Lisa S Shock
- Massey Cancer Center and Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, Virginia 23298
| | - Eric F Johnson
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California 92037.
| | - John C Hackett
- Massey Cancer Center and Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, Virginia 23298.
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Kharkwal H, Batool F, Koentgen F, Bell DR, Kendall DA, Ebling FJP, Duce IR. Generation and phenotypic characterisation of a cytochrome P450 4x1 knockout mouse. PLoS One 2017; 12:e0187959. [PMID: 29227996 PMCID: PMC5724839 DOI: 10.1371/journal.pone.0187959] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 10/14/2017] [Indexed: 11/18/2022] Open
Abstract
Cytochrome P450 4x1 (Cyp4x1) is expressed at very high levels in the brain but the function of this protein is unknown. It has been hypothesised to regulate metabolism of fatty acids and to affect the activity of endocannabinoid signalling systems, which are known to influence appetite and energy metabolism. The objective of the present investigation was to determine the impact of Cyp4x1 on body weight and energy metabolism by developing a line of transgenic Cyp4x1-knock out mice. Mice were developed with a global knock-out of the gene; the full-length RNA was undetectable, and mice were viable and fertile. Both male and female Cyp4x1-knock out mice gained significantly more body weight on normal lab chow diet compared to control flox mice on the same genetic background. At necropsy, Cyp4x1-knock out male mice had significantly greater intra-abdominal fat deposits (P<0.01), and enlarged adipocytes. Metabolic rate and locomotor activity as inferred from VO2 measures and crossing of infrared beams in metabolic cages were not significantly affected by the mutation in either gender. The respiratory exchange ratio was significantly decreased in male knock out mice (P<0.05), suggesting a greater degree of fat oxidation, consistent with their higher adiposity. When mice were maintained on a high fat diet, VO2 was significantly decreased in both male and female Cyp4x1-knock out mice. We conclude that the Cyp4x1-knock out mouse strain demonstrates a mildly obese phenotype, consistent with the view that cytochrome P450 4x1 plays a role in regulating fat metabolism.
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Affiliation(s)
- Himanshu Kharkwal
- School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
| | - Farhat Batool
- School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
- Department of Biochemistry, University of Karachi, Karachi, Pakistan
| | - Frank Koentgen
- Ozgene Pty Ltd., Bentley DC, Western Australia, Australia
| | - David R. Bell
- School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
- European Chemicals Agency, Helsinki, Finland
| | - David A. Kendall
- School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
| | | | - Ian R. Duce
- School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
- * E-mail:
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McDonald MG, Ray S, Amorosi CJ, Sitko KA, Kowalski JP, Paco L, Nath A, Gallis B, Totah RA, Dunham MJ, Fowler DM, Rettie AE. Expression and Functional Characterization of Breast Cancer-Associated Cytochrome P450 4Z1 in Saccharomyces cerevisiae. Drug Metab Dispos 2017; 45:1364-1371. [PMID: 29018033 PMCID: PMC5697098 DOI: 10.1124/dmd.117.078188] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 10/04/2017] [Indexed: 12/22/2022] Open
Abstract
CYP4Z1 is an "orphan" cytochrome P450 (P450) enzyme that has provoked interest because of its hypothesized role in breast cancer through formation of the signaling molecule 20-hydroxyeicosatetraenoic acid (20-HETE). We expressed human CYP4Z1 in Saccharomyces cerevisiae and evaluated its catalytic capabilities toward arachidonic and lauric acids (AA and LA). Specific and sensitive mass spectrometry assays enabled discrimination of the regioselectivity of hydroxylation of these two fatty acids. CYP4Z1 generated 7-, 8-, 9-, 10-, and 11-hydroxy LA, whereas the 12-hydroxy metabolite was not detected. HET0016, the prototypic CYP4 inhibitor, only weakly inhibited laurate metabolite formation (IC50 ∼15 μM). CYP4Z1 preferentially oxidized AA to the 14(S),15(R)-epoxide with high regioselectivity and stereoselectivity, a reaction that was also insensitive to HET0016, but neither 20-HETE nor 20-carboxy-AA were detectable metabolites. Docking of LA and AA into a CYP4Z1 homology model was consistent with this preference for internal fatty acid oxidation. Thus, human CYP4Z1 has an inhibitor profile and product regioselectivity distinct from most other CYP4 enzymes, consistent with CYP4Z1's lack of a covalently linked heme. These data suggest that, if CYP4Z1 modulates breast cancer progression, it does so by a mechanism other than direct production of 20-HETE.
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Affiliation(s)
- Matthew G McDonald
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Sutapa Ray
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Clara J Amorosi
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Katherine A Sitko
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - John P Kowalski
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Lorela Paco
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Abhinav Nath
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Byron Gallis
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Rheem A Totah
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Maitreya J Dunham
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Douglas M Fowler
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
| | - Allan E Rettie
- Departments of Medicinal Chemistry (M.G.M., S.R., J.P.K., L.P., A.N., B.G., R.A.T., A.E.R.), Genome Sciences (K.A.S., C.J.A., M.J.D., D.M.F.), and Bioengineering (D.M.F.), University of Washington, Seattle, Washington
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Kim B, Lee J, Shin KH, Lee S, Yu KS, Jang IJ, Cho JY. Identification of ω- or (ω-1)-Hydroxylated Medium-Chain Acylcarnitines as Novel Urinary Biomarkers for CYP3A Activity. Clin Pharmacol Ther 2017; 103:879-887. [PMID: 28877336 DOI: 10.1002/cpt.856] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 08/16/2017] [Accepted: 08/21/2017] [Indexed: 12/19/2022]
Abstract
Quantitative models of endogenous metabolites are useful in predicting CYP3A-mediated drug-drug interactions. This study aimed to identify novel predictive markers for the magnitude of CYP3A induction and inhibition in male and female subjects using an untargeted metabolomics approach. Here we report five ω- or (ω-1)-hydroxylated medium-chain acylcarnitines as novel CYP3A4 markers. As CYP4 catalyzes the ω- or (ω-1)-hydroxylation of various medium-chain fatty acids (MCFAs), recombinant enzyme assays were used to determine the ω- and (ω-1)-hydroxylation activities of CYP3A4, CYP4A11, and CYP4F2. CYP3A4 catalyzed ω- and (ω-1)-hydroxylated MCFAs with the lowest Km and highest Vmax /Km values. Finally, we derived a model to predict midazolam clearance using these markers and demonstrated that the predictive model including three ω- or (ω-1)-hydroxylated medium-chain acylcarnitines, 6β-OH cortisol, and gender as covariates shows reliable predictability (r2 = 0.894).
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Affiliation(s)
- Bora Kim
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, South Korea
| | - Jieon Lee
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, South Korea
| | - Kwang-Hee Shin
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, South Korea
| | - SeungHwan Lee
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, South Korea
| | - Kyung-Sang Yu
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, South Korea
| | - In-Jin Jang
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, South Korea
| | - Joo-Youn Cho
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, South Korea
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Liu R, Tam TW, Mao J, Salem A, Arnason JT, Krantis A, Foster BC. In vitro activity of Lycium barbarum (Goji) against major human phase I metabolism enzymes. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2017; 13:257-265. [PMID: 27352447 DOI: 10.1515/jcim-2015-0038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 05/15/2016] [Indexed: 11/15/2022]
Abstract
BACKGROUND Goji berry (Lycium barbarum) has been used as traditional Chinese medicine and a functional food in China. Goji tea may interact with drugs such as warfarin by inhibiting the cytochrome P450 (CYP) 2C9, and this study was undertaken to characterize the effect of Goji products on CYP2C9/19-, CYP2D6 *1/*10-, CYP3A4/5/7-, CYP19-, and flavin-containing monooxygenase (FMO) 3-mediated metabolism. METHODS Goji juice, water, and ethanol extracts were examined for their effect on CYP2C9/19-, 2D6-, 3A4/5/7-, 4A11-, CYP19-, and FMO3-mediated metabolism by using in vitro bioassay. The mechanism-based inactivation (MBI) of Goji juice on CYP3A4 was also examined. RESULTS Data indicates that both fresh juice and commercially available juice caused strong inhibition (over 75 %) of most of the major CYP450 enzymes and moderate inhibition of FMO3 (30-60 %). Compared to juice, the Goji cold/hot water extracts effected low inhibition (below 30 %) of these enzymes. Ethanol (80 %) extracts exhibit the strongest inhibition on CYP2C9 and 2C19 (over 90 %). The inhibition pattern of dried and fresh berry extract and high-performance liquid chromatography (HPLC)-UV fingerprints were similar. CONCLUSIONS These findings suggest that Goji products (berries, tea, tincture, and juice) can inhibit phase I drug metabolism enzymes and have the potential to affect the safety and efficacy of therapeutic products.
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Yi M, Cho SA, Min J, Kim DH, Shin JG, Lee SJ. Functional characterization of a common CYP4F11 genetic variant and identification of functionally defective CYP4F11 variants in erythromycin metabolism and 20-HETE synthesis. Arch Biochem Biophys 2017; 620:43-51. [DOI: 10.1016/j.abb.2017.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/08/2017] [Accepted: 03/19/2017] [Indexed: 12/31/2022]
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Hsu MH, Baer BR, Rettie AE, Johnson EF. The Crystal Structure of Cytochrome P450 4B1 (CYP4B1) Monooxygenase Complexed with Octane Discloses Several Structural Adaptations for ω-Hydroxylation. J Biol Chem 2017; 292:5610-5621. [PMID: 28167536 DOI: 10.1074/jbc.m117.775494] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 02/02/2017] [Indexed: 11/06/2022] Open
Abstract
P450 family 4 fatty acid ω-hydroxylases preferentially oxygenate primary C-H bonds over adjacent, energetically favored secondary C-H bonds, but the mechanism explaining this intriguing preference is unclear. To this end, the structure of rabbit P450 4B1 complexed with its substrate octane was determined by X-ray crystallography to define features of the active site that contribute to a preference for ω-hydroxylation. The structure indicated that octane is bound in a narrow active-site cavity that limits access of the secondary C-H bond to the reactive intermediate. A highly conserved sequence motif on helix I contributes to positioning the terminal carbon of octane for ω-hydroxylation. Glu-310 of this motif auto-catalytically forms an ester bond with the heme 5-methyl, and the immobilized Glu-310 contributes to substrate positioning. The preference for ω-hydroxylation was decreased in an E310A mutant having a shorter side chain, but the overall rates of metabolism were retained. E310D and E310Q substitutions having longer side chains exhibit lower overall rates, likely due to higher conformational entropy for these residues, but they retained high preferences for octane ω-hydroxylation. Sequence comparisons indicated that active-site residues constraining octane for ω-hydroxylation are conserved in family 4 P450s. Moreover, the heme 7-propionate is positioned in the active site and provides additional restraints on substrate binding. In conclusion, P450 4B1 exhibits structural adaptations for ω-hydroxylation that include changes in the conformation of the heme and changes in a highly conserved helix I motif that is associated with selective oxygenation of unactivated primary C-H bonds.
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Affiliation(s)
- Mei-Hui Hsu
- From the Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California 92037 and
| | - Brian R Baer
- the Department of Medicinal Chemistry, University of Washington, Seattle, Washington 98195
| | - Allan E Rettie
- the Department of Medicinal Chemistry, University of Washington, Seattle, Washington 98195
| | - Eric F Johnson
- From the Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California 92037 and
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Pickering RT, Lee MJ, Karastergiou K, Gower A, Fried SK. Depot Dependent Effects of Dexamethasone on Gene Expression in Human Omental and Abdominal Subcutaneous Adipose Tissues from Obese Women. PLoS One 2016; 11:e0167337. [PMID: 28005982 PMCID: PMC5179014 DOI: 10.1371/journal.pone.0167337] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 11/11/2016] [Indexed: 12/31/2022] Open
Abstract
Glucocorticoids promote fat accumulation in visceral compared to subcutaneous depots, but the molecular mechanisms involved remain poorly understood. To identify long-term changes in gene expression that are differentially sensitive or responsive to glucocorticoids in these depots, paired samples of human omental (Om) and abdominal subcutaneous (Abdsc) adipose tissues obtained from obese women during elective surgery were cultured with the glucocorticoid receptor agonist dexamethasone (Dex, 0, 1, 10, 25 and 1000 nM) for 7 days. Dex regulated 32% of the 19,741 genes on the array, while 53% differed by Depot and 2.5% exhibited a Depot*Dex concentration interaction. Gene set enrichment analysis showed Dex regulation of the expected metabolic and inflammatory pathways in both depots. Cluster analysis of the 460 transcripts that exhibited an interaction of Depot and Dex concentration revealed sets of mRNAs for which the responses to Dex differed in magnitude, sensitivity or direction between the two depots as well as mRNAs that responded to Dex only in one depot. These transcripts were also clearly depot different in fresh adipose tissue and are implicated in processes that could affect adipose tissue distribution or functions (e.g. adipogenesis, triacylglycerol synthesis and storage, insulin action). Elucidation of the mechanisms underlying the depot differences in the effect of Dex on the expression of specific genes and pathways that regulate adipose function may offer novel insights into understanding the biology of visceral adipose tissues and their links to metabolic health.
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Affiliation(s)
- R. Taylor Pickering
- Obesity Center, Department of Medicine, Boston University School of Medicine, Boston, MA, United States of America
| | - Mi-Jeong Lee
- Obesity Center, Department of Medicine, Boston University School of Medicine, Boston, MA, United States of America
| | - Kalypso Karastergiou
- Obesity Center, Department of Medicine, Boston University School of Medicine, Boston, MA, United States of America
| | - Adam Gower
- Clinical Translational Sciences Institute, Boston University, Boston, MA, United States of America
| | - Susan K. Fried
- Obesity Center, Department of Medicine, Boston University School of Medicine, Boston, MA, United States of America
- * E-mail:
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Abstract
Bietti crystalline dystrophy (BCD) is an inherited retinal degenerative disease characterized by crystalline deposits in the retina, followed by progressive atrophy of the retinal pigment epithelium (RPE), choriocapillaris, and photoreceptors. CYP4V2 has been identified as the causative gene for BCD. The CYP4V2 gene belongs to the cytochrome P450 superfamily and encodes for fatty acid ω-hydroxylase of both saturated and unsaturated fatty acids. The CYP4V2 protein is localized most abundantly within the endoplasmic reticulum in the RPE and is postulated to play a role in the physiological lipid recycling system between the RPE and photoreceptors to maintain visual function. Electroretinographic assessments have revealed progressive dysfunction of rod and cone photoreceptors in patients with BCD. Several genotypes have been associated with more severe phenotypes based on clinical and electrophysiological findings. With the advent of multimodal imaging with spectral domain optical coherence tomography, fundus autofluorescence, and adaptive optics scanning laser ophthalmoscopy, more precise delineation of BCD severity and progression is now possible, allowing for the potential future development of targets for gene therapy.
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Affiliation(s)
- Danny S C Ng
- From the *Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong; and †2010 Retina and Macula Centre, Kowloon, Hong Kong
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Pan ST, Xue D, Li ZL, Zhou ZW, He ZX, Yang Y, Yang T, Qiu JX, Zhou SF. Computational Identification of the Paralogs and Orthologs of Human Cytochrome P450 Superfamily and the Implication in Drug Discovery. Int J Mol Sci 2016; 17:E1020. [PMID: 27367670 PMCID: PMC4964396 DOI: 10.3390/ijms17071020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 04/02/2016] [Accepted: 06/07/2016] [Indexed: 12/31/2022] Open
Abstract
The human cytochrome P450 (CYP) superfamily consisting of 57 functional genes is the most important group of Phase I drug metabolizing enzymes that oxidize a large number of xenobiotics and endogenous compounds, including therapeutic drugs and environmental toxicants. The CYP superfamily has been shown to expand itself through gene duplication, and some of them become pseudogenes due to gene mutations. Orthologs and paralogs are homologous genes resulting from speciation or duplication, respectively. To explore the evolutionary and functional relationships of human CYPs, we conducted this bioinformatic study to identify their corresponding paralogs, homologs, and orthologs. The functional implications and implications in drug discovery and evolutionary biology were then discussed. GeneCards and Ensembl were used to identify the paralogs of human CYPs. We have used a panel of online databases to identify the orthologs of human CYP genes: NCBI, Ensembl Compara, GeneCards, OMA ("Orthologous MAtrix") Browser, PATHER, TreeFam, EggNOG, and Roundup. The results show that each human CYP has various numbers of paralogs and orthologs using GeneCards and Ensembl. For example, the paralogs of CYP2A6 include CYP2A7, 2A13, 2B6, 2C8, 2C9, 2C18, 2C19, 2D6, 2E1, 2F1, 2J2, 2R1, 2S1, 2U1, and 2W1; CYP11A1 has 6 paralogs including CYP11B1, 11B2, 24A1, 27A1, 27B1, and 27C1; CYP51A1 has only three paralogs: CYP26A1, 26B1, and 26C1; while CYP20A1 has no paralog. The majority of human CYPs are well conserved from plants, amphibians, fishes, or mammals to humans due to their important functions in physiology and xenobiotic disposition. The data from different approaches are also cross-validated and validated when experimental data are available. These findings facilitate our understanding of the evolutionary relationships and functional implications of the human CYP superfamily in drug discovery.
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Affiliation(s)
- Shu-Ting Pan
- Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital of Nanchang University, Nanchang 330003, China.
| | - Danfeng Xue
- Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital of Nanchang University, Nanchang 330003, China.
| | - Zhi-Ling Li
- Department of Pharmacy, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai 200040, China.
| | - Zhi-Wei Zhou
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA.
| | - Zhi-Xu He
- Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Center & Sino-US Joint Laboratory for Medical Sciences, Guizhou Medical University, Guiyang 550004, China.
| | - Yinxue Yang
- Department of Colorectal Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, China.
| | - Tianxin Yang
- Department of Internal Medicine, University of Utah and Salt Lake Veterans Affairs Medical Center, Salt Lake City, UT 84132, USA.
| | - Jia-Xuan Qiu
- Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital of Nanchang University, Nanchang 330003, China.
| | - Shu-Feng Zhou
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, Fujian, China.
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Miyata A, Hasegawa M, Hachiuma K, Mori H, Horiuchi N, Mizuno-Yasuhira A, Chino Y, Jingu S, Sakai S, Samukawa Y, Nakai Y, Yamaguchi JI. Metabolite profiling and enzyme reaction phenotyping of luseogliflozin, a sodium–glucose cotransporter 2 inhibitor, in humans. Xenobiotica 2016; 47:332-345. [DOI: 10.1080/00498254.2016.1193263] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Atsunori Miyata
- Department of Pharmacokinetics and Metabolism, Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan,
| | - Masatoshi Hasegawa
- Department of Pharmacokinetics and Metabolism, Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan,
| | - Kenji Hachiuma
- Department of Pharmacokinetics and Metabolism, Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan,
| | - Haruyuki Mori
- Department of Pharmacokinetics and Metabolism, Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan,
| | - Nobuko Horiuchi
- Department of Pharmacokinetics and Metabolism, Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan,
| | - Akiko Mizuno-Yasuhira
- Department of Pharmacokinetics and Metabolism, Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan,
| | - Yukihiro Chino
- Department of Pharmacokinetics and Metabolism, Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan,
| | - Shigeji Jingu
- Department of Pharmacokinetics and Metabolism, Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan,
| | - Soichi Sakai
- Clinical Development, Taisho Pharmaceutical Co., Ltd, Tokyo, Japan,
| | - Yoshishige Samukawa
- Research and Development Headquarters, Taisho Pharmaceutical Co., Ltd, Tokyo, Japan, and
| | - Yasuhiro Nakai
- Development Headquarters, Taisho Pharmaceutical Co., Ltd, Tokyo, Japan
| | - Jun-ichi Yamaguchi
- Department of Pharmacokinetics and Metabolism, Drug Safety and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan,
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Dalmasso C, Maranon R, Patil C, Moulana M, Romero DG, Reckelhoff JF. 20-HETE and CYP4A2 ω-hydroxylase contribute to the elevated blood pressure in hyperandrogenemic female rats. Am J Physiol Renal Physiol 2016; 311:F71-7. [PMID: 27194719 DOI: 10.1152/ajprenal.00458.2015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 05/17/2016] [Indexed: 01/08/2023] Open
Abstract
In male rats, androgen supplements increase 20-hydroxyeicosatetraenoic acid (20-HETE) via cytochrome P-450 (CYP)4A ω-hydroxylase and cause an increase in blood pressure (BP). In the present study, we determined the roles of 20-HETE and CYP4A2 on the elevated BP in hyperandrogenemic female rats. Chronic dihydrotestosterone (DHT) increased mean arterial pressure (MAP) in female Sprague-Dawley rats (96 ± 2 vs. 108 ± 2 mmHg, P < 0.05) and was associated with increased renal microvascular CYP4A2 mRNA expression (15-fold), endogenous renal 20-HETE (5-fold), and ω-hydroxylase activity (3-fold). Chronic DHT also increased MAP in low salt-fed Dahl salt-resistant female rats (81 ± 4 vs. 95 ± 1 mmHg, P < 0.05) but had no effect on MAP in Dahl salt-sensitive female rats (154 ± 3 vs. 153 ± 3 mmHg), which are known to be 20-HETE deficient. To test the role of CYP4A2, female CYP4A2(-/-) and SS.5(Bn) (wild type) rats were treated with DHT. DHT increased MAP in SS.5(Bn) female rats (104 ± 1 vs. 128 ± 1 mmHg, P < 0.05) but had no effect in CYP4A2(-/-) female rats (118 ± 1 vs. 120 ± 1 mmHg). Renal microvascular 20-HETE was reduced in control CYP4A2(-/-) female rats and was increased with DHT in SS.5(Bn) female rats (6-fold) but not CYP4A2(-/-) female rats. ω-Hydroxylase activity was 40% lower in control CYP4A2(-/-) female rats than in SS.5(Bn) female rats, and DHT decreased ω-hydroxylase activity in SS.5(Bn) female rats (by 50%) but significantly increased ω-hydroxylase activity in CYP4A2(-/-) female rats (3-fold). These data suggest that 20-HETE via CYP4A2 contributes to the elevation in BP in hyperandrogenemic female rats. The data also suggest that 20-HETE synthesis inhibition may be effective in treating the elevated BP in women with hyperandrogenemia, such as women with polycystic ovary syndrome.
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Affiliation(s)
- Carolina Dalmasso
- Department of Physiology, University of Mississippi Medical Center, Jackson, Mississippi; Women's Health Research Center, University of Mississippi Medical Center, Jackson, Mississippi
| | - Rodrigo Maranon
- Department of Physiology, University of Mississippi Medical Center, Jackson, Mississippi; Department of Nephrology, University of Mississippi Medical Center, Jackson, Mississippi; Women's Health Research Center, University of Mississippi Medical Center, Jackson, Mississippi
| | - Chetan Patil
- Department of Physiology, University of Mississippi Medical Center, Jackson, Mississippi; Women's Health Research Center, University of Mississippi Medical Center, Jackson, Mississippi
| | - Mohadetheh Moulana
- Department of Psychiatry, University of Mississippi Medical Center, Jackson, Mississippi; Women's Health Research Center, University of Mississippi Medical Center, Jackson, Mississippi
| | - Damian G Romero
- Department of Biochemistry, University of Mississippi Medical Center, Jackson, Mississippi; and Women's Health Research Center, University of Mississippi Medical Center, Jackson, Mississippi
| | - Jane F Reckelhoff
- Department of Physiology, University of Mississippi Medical Center, Jackson, Mississippi; Women's Health Research Center, University of Mississippi Medical Center, Jackson, Mississippi
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Uehara S, Uno Y, Yuki Y, Inoue T, Sasaki E, Yamazaki H. A New Marmoset P450 4F12 Enzyme Expressed in Small Intestines and Livers Efficiently Metabolizes Antihistaminic Drug Ebastine. ACTA ACUST UNITED AC 2016; 44:833-41. [PMID: 27044800 DOI: 10.1124/dmd.116.070367] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 04/01/2016] [Indexed: 01/08/2023]
Abstract
Common marmosets (Callithrix jacchus) are attracting attention as animal models in preclinical studies for drug development. However, cytochrome P450s (P450s), major drug-metabolizing enzymes, have not been fully identified and characterized in marmosets. In this study, based on the four novel P450 4F genes found on the marmoset genome, we successfully isolated P450 4F2, 4F3B, 4F11, and 4F12 cDNAs in marmoset livers. Deduced amino acid sequences of the four marmoset P450 4F forms exhibited high sequence identities (87%-93%) to the human and cynomolgus monkey P450 4F homologs. Marmoset P450 4F3B and 4F11 mRNAs were predominantly expressed in livers, whereas marmoset P450 4F2 and 4F12 mRNAs were highly expressed in small intestines and livers. Four marmoset P450 4F proteins heterologously expressed in Escherichia coli catalyzed the ω-hydroxylation of leukotriene B4 In addition, marmoset P450 4F12 effectively catalyzed the hydroxylation of antiallergy drug ebastine, a human P450 2J/4F probe substrate. Ebastine hydroxylation activities by small intestine and liver microsomes from marmosets and cynomolgus monkeys showed greatly higher values than those of humans. Ebastine hydroxylation activities by marmoset and cynomolgus monkey small intestine microsomes were inhibited (approximately 60%) by anti-P450 4F antibodies, unlike human small intestine microsomes, suggesting that contribution of P450 4F enzymes for ebastine hydroxylation in the small intestine might be different between marmosets/cynomolgus monkeys and humans. These results indicated that marmoset P450 4F2, 4F3B, 4F11, and 4F12 were expressed in livers and/or small intestines and were functional in the metabolism of endogenous and exogenous compounds, similar to those of cynomolgus monkeys and humans.
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Affiliation(s)
- Shotaro Uehara
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo, Japan (S.U., Y.Y., H.Y.); Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories, Ltd., Kainan, Wakayama, Japan (Y.U.); Department of Applied Developmental Biology (T.I.) and Center of Applied Developmental Biology (E.S.), Central Institute for Experimental Animals, Kawasaki, Japan; and Keio Advanced Research Center, Keio University, Minato-ku, Tokyo, Japan (E.S.)
| | - Yasuhiro Uno
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo, Japan (S.U., Y.Y., H.Y.); Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories, Ltd., Kainan, Wakayama, Japan (Y.U.); Department of Applied Developmental Biology (T.I.) and Center of Applied Developmental Biology (E.S.), Central Institute for Experimental Animals, Kawasaki, Japan; and Keio Advanced Research Center, Keio University, Minato-ku, Tokyo, Japan (E.S.)
| | - Yukako Yuki
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo, Japan (S.U., Y.Y., H.Y.); Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories, Ltd., Kainan, Wakayama, Japan (Y.U.); Department of Applied Developmental Biology (T.I.) and Center of Applied Developmental Biology (E.S.), Central Institute for Experimental Animals, Kawasaki, Japan; and Keio Advanced Research Center, Keio University, Minato-ku, Tokyo, Japan (E.S.)
| | - Takashi Inoue
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo, Japan (S.U., Y.Y., H.Y.); Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories, Ltd., Kainan, Wakayama, Japan (Y.U.); Department of Applied Developmental Biology (T.I.) and Center of Applied Developmental Biology (E.S.), Central Institute for Experimental Animals, Kawasaki, Japan; and Keio Advanced Research Center, Keio University, Minato-ku, Tokyo, Japan (E.S.)
| | - Erika Sasaki
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo, Japan (S.U., Y.Y., H.Y.); Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories, Ltd., Kainan, Wakayama, Japan (Y.U.); Department of Applied Developmental Biology (T.I.) and Center of Applied Developmental Biology (E.S.), Central Institute for Experimental Animals, Kawasaki, Japan; and Keio Advanced Research Center, Keio University, Minato-ku, Tokyo, Japan (E.S.)
| | - Hiroshi Yamazaki
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Tokyo, Japan (S.U., Y.Y., H.Y.); Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories, Ltd., Kainan, Wakayama, Japan (Y.U.); Department of Applied Developmental Biology (T.I.) and Center of Applied Developmental Biology (E.S.), Central Institute for Experimental Animals, Kawasaki, Japan; and Keio Advanced Research Center, Keio University, Minato-ku, Tokyo, Japan (E.S.)
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Lo Sasso G, Titz B, Nury C, Boué S, Phillips B, Belcastro V, Schneider T, Dijon S, Baumer K, Peric D, Dulize R, Elamin A, Guedj E, Buettner A, Leroy P, Kleinhans S, Vuillaume G, Veljkovic E, Ivanov NV, Martin F, Vanscheeuwijck P, Peitsch MC, Hoeng J. Effects of cigarette smoke, cessation and switching to a candidate modified risk tobacco product on the liver in Apoe -/- mice--a systems toxicology analysis. Inhal Toxicol 2016; 28:226-40. [PMID: 27027324 DOI: 10.3109/08958378.2016.1150368] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/14/2016] [Accepted: 02/01/2016] [Indexed: 12/11/2022]
Abstract
The liver is one of the most important organs involved in elimination of xenobiotic and potentially toxic substances. Cigarette smoke (CS) contains more than 7000 chemicals, including those that exert biological effects and cause smoking-related diseases. Though CS is not directly hepatotoxic, a growing body of evidence suggests that it may exacerbate pre-existing chronic liver disease. In this study, we integrated toxicological endpoints with molecular measurements and computational analyses to investigate effects of exposures on the livers of Apoe(-/- )mice. Mice were exposed to 3R4F reference CS, to an aerosol from the Tobacco Heating System (THS) 2.2, a candidate modified risk tobacco product (MRTP) or to filtered air (Sham) for up to 8 months. THS2.2 takes advantage of a "heat-not-burn" technology that, by heating tobacco, avoids pyrogenesis and pyrosynthesis. After CS exposure for 2 months, some groups were either switched to the MRTP or filtered air. While no group showed clear signs of hepatotoxicity, integrative analysis of proteomics and transcriptomics data showed a CS-dependent impairment of specific biological networks. These networks included lipid and xenobiotic metabolism and iron homeostasis that likely contributed synergistically to exacerbating oxidative stress. In contrast, most proteomic and transcriptomic changes were lower in mice exposed to THS2.2 and in the cessation and switching groups compared to the CS group. Our findings elucidate the complex biological responses of the liver to CS exposure. Furthermore, they provide evidence that THS2.2 aerosol has reduced biological effects, as compared with CS, on the livers of Apoe(-/- )mice.
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Affiliation(s)
- Giuseppe Lo Sasso
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Bjoern Titz
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Catherine Nury
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Stéphanie Boué
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Blaine Phillips
- b Philip Morris International Research Laboratories , Singapore , Singapore , and
| | - Vincenzo Belcastro
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Thomas Schneider
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Sophie Dijon
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Karine Baumer
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Daruisz Peric
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Remi Dulize
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Ashraf Elamin
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Emmanuel Guedj
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | | | - Patrice Leroy
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Samuel Kleinhans
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Gregory Vuillaume
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Emilija Veljkovic
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Nikolai V Ivanov
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Florian Martin
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | | | - Manuel C Peitsch
- a Philip Morris International Research and Development , Neuchatel , Switzerland
| | - Julia Hoeng
- a Philip Morris International Research and Development , Neuchatel , Switzerland
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Makia NL, Goldstein JA. CYP2C8 Is a Novel Target of Peroxisome Proliferator-Activated Receptor α in Human Liver. Mol Pharmacol 2015; 89:154-64. [PMID: 26467040 DOI: 10.1124/mol.115.100255] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 10/13/2015] [Indexed: 02/01/2023] Open
Abstract
Human cytochrome P450 (CYP) 2C enzymes metabolize ∼30% of clinically prescribed drugs and various environmental chemicals. CYP2C8, an important member of this subfamily, metabolizes the anticancer drug paclitaxel, certain antidiabetic drugs, and endogenous substrates, including arachidonic acid, to physiologically active epoxyeicosatrienoic acids. Previous studies from our laboratory showed that microRNA 107 (miR107) and microRNA 103 downregulate CYP2C8 post-transcriptionally. miR107 is located in intron 5 of the pantothenate kinase 1 (PANK1) gene. p53 has been reported to coregulate the induction of PANK1 and miR107. Here, we examine the possible downregulation of CYP2C8 by drugs capable of inducing miR107. Hypolipidemic drugs, such as bezafibrate, known activators of the peroxisome proliferator-activated receptor α (PPARα), induce both the PANK1 gene and miR107 (∼2.5-fold) in primary human hepatocytes. Surprisingly, CYP2C8 mRNA and protein levels were induced by bezafibrate. CYP2C8 promoter activity was increased by ectopic expression of PPARα in HepG2 cells, with a further increase after bezafibrate (∼18-fold), 4-chloro-6-(2,3-xylidino)-2-pyrimidinylthio acetic acid (∼10-fold) treatment, or the antidiabetic drug rosiglitazone, all known PPAR activators. Promoter sequence analyses, deletion studies, mutagenesis studies, and electrophoretic mobility shift assays identified a PPARα response element located at position -2109 base pair relative to the translation start site of CYP2C8. Chromatin immunopreciptation assay analysis confirmed recruitment of PPARα to this PPARα response element after bezafibrate treatment of human hepatocytes. Thus, we show for the first time that CYP2C8 is transcriptionally regulated by PPARα, suggesting the potential for drug-drug interactions due to upregulation of CYP2C8 by PPAR activators.
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Affiliation(s)
- Ngome L Makia
- Human Metabolism Group, Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Joyce A Goldstein
- Human Metabolism Group, Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
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Johnson AL, Edson KZ, Totah RA, Rettie AE. Cytochrome P450 ω-Hydroxylases in Inflammation and Cancer. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2015; 74:223-62. [PMID: 26233909 DOI: 10.1016/bs.apha.2015.05.002] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cytochrome P450-dependent ω-hydroxylation is a prototypic metabolic reaction of CYP4 family members that is important for the elimination and bioactivation of not only therapeutic drugs, but also endogenous compounds, principally fatty acids. Eicosanoids, derived from arachidonic acid, are key substrates in the latter category. Human CYP4 enzymes, mainly CYP4A11, CYP4F2, and CYP4F3B, hydroxylate arachidonic acid at the omega position to form 20-HETE, which has important effects in tumor progression and on angiogenesis and blood pressure regulation in the vasculature and kidney. CYP4F3A in myeloid tissue catalyzes the ω-hydroxylation of leukotriene B4 to 20-hydroxy leukotriene B4, an inactivation process that is critical for the regulation of the inflammatory response. Here, we review the enzymology, tissue distribution, and substrate selectivity of human CYP4 ω-hydroxylases and their roles as catalysts for the formation and termination of the biological effects of key eicosanoid metabolites in inflammation and cancer progression.
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Affiliation(s)
- Amanda L Johnson
- Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, Washington, USA
| | - Katheryne Z Edson
- Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, Washington, USA; Amgen Inc., Thousand Oaks, California, USA
| | - Rheem A Totah
- Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, Washington, USA
| | - Allan E Rettie
- Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, Washington, USA.
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47
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Selwyn FP, Cui JY, Klaassen CD. RNA-Seq Quantification of Hepatic Drug Processing Genes in Germ-Free Mice. Drug Metab Dispos 2015; 43:1572-80. [PMID: 25956306 DOI: 10.1124/dmd.115.063545] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 05/07/2015] [Indexed: 11/22/2022] Open
Abstract
Intestinal bacteria have been shown to be important in regulating host intermediary metabolism and contributing to obesity. However, relatively less is known about the effect of intestinal bacteria on the expression of hepatic drug-processing genes in the host. This study characterizes the expression of hepatic drug-processing genes in germ-free (GF) mice using RNA-Seq. Total RNA were isolated from the livers of adult male conventional and GF C57BL/6J mice (n = 3 per group). In the livers of GF mice, the mRNA of the aryl hydrocarbon receptor target gene Cyp1a2 was increased 51%, and the mRNA of the peroxisome proliferator-activated receptor α (PPARα) target gene Cyp4a14 was increased 202%. Conversely, the mRNA of the constitutive androstane receptor (CAR) target gene Cyp2b10 was decreased 57%, and the mRNA of the pregnane X receptor target gene Cyp3a11 was decreased 87% in GF mice. Although other non-Cyp phase-1 enzymes in the livers of GF mice were only moderately affected, there was a marked down-regulation in the phase-2 enzymes glutathione S-transferases p1 and p2, as well as a marked up-regulation in the major bile acid transporters Na(+)-taurocholate cotransporting polypeptide and organic anion-transporting polypeptide 1b2, and the cholesterol transporter ATP-binding cassette transporter Abcg5/Abcg8. This study demonstrates that intestinal bacteria regulate the expression of a large number of drug-processing genes, which suggests that intestinal bacteria are responsible for some individual differences in drug responses.
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Affiliation(s)
- Felcy Pavithra Selwyn
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington
| | - Julia Yue Cui
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington
| | - Curtis D Klaassen
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington
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Abstract
A kinetic and spectroscopic characterization of the ferryl intermediate (APO-II) from APO, the heme-thiolate peroxygenase from Agrocybe aegerita, is described. APO-II was generated by reaction of the ferric enzyme with metachloroperoxybenzoic acid in the presence of nitroxyl radicals and detected with the use of rapid-mixing stopped-flow UV-visible (UV-vis) spectroscopy. The nitroxyl radicals served as selective reductants of APO-I, reacting only slowly with APO-II. APO-II displayed a split Soret UV-vis spectrum (370 nm and 428 nm) characteristic of thiolate ligation. Rapid-mixing, pH-jump spectrophotometry revealed a basic pKa of 10.0 for the Fe(IV)-O-H of APO-II, indicating that APO-II is protonated under typical turnover conditions. Kinetic characterization showed that APO-II is unusually reactive toward a panel of benzylic C-H and phenolic substrates, with second-order rate constants for C-H and O-H bond scission in the range of 10-10(7) M(-1)⋅s(-1). Our results demonstrate the important role of the axial cysteine ligand in increasing the proton affinity of the ferryl oxygen of APO intermediates, thus providing additional driving force for C-H and O-H bond scission.
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Computational identification and binding analysis of orphan human cytochrome P450 4X1 enzyme with substrates. BMC Res Notes 2015; 8:9. [PMID: 25595103 PMCID: PMC4322450 DOI: 10.1186/s13104-015-0976-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 01/05/2015] [Indexed: 01/25/2023] Open
Abstract
Background Cytochrome P450s (CYPs) are important heme-containing proteins, well known for their monooxygenase reaction. The human cytochrome P450 4X1 (CYP4X1) is categorized as “orphan” CYP because of its unknown function. In recent studies it is found that this enzyme is expressed in neurovascular functions of the brain. Also, various studies have found the expression and activity of orphan human cytochrome P450 4X1 in cancer. It is found to be a potential drug target for cancer therapy. However, three-dimensional structure, the active site topology and substrate specificity of CYP4X1 remain unclear. Methods In the present study, the three-dimensional structure of orphan human cytochrome P450 4X1 was generated by homology modeling using Modeller 9v8. The generated structure was accessed for geometrical errors and energy stability using PROCHECK, VERFIY 3D and PROSA. A molecular docking analysis was carried out against substrates arachidonic acid and anandamide and the docked substrates were predicted for drug-likeness, ADME-Tox parameters and biological spectrum activity. Results The three-dimensional model of orphan human cytochrome P450 4X1 was generated and assessed with various structural validation programmes. Docking of orphan human cytochrome P450 4X1 with arachidonic acid revealed that TYR 112, ALA 126, ILE 222, ILE 223, THR 312, LEU 315, ALA 316, ASP 319, THR 320, PHE 491 and ILE 492 residues were actively participating in the interaction, while docking of CYP4X1 with anandamide showed that TYR 112, GLN 114, PRO 118, ALA 126, ILE 222, ILE 223, SER 251, LEU 315, ALA 316 and PHE 491 key residues were involved in strong interaction. Conclusion From this study, several key residues were identified to be responsible for the binding of arachidonic acid and anandamide with orphan human cytochrome P450 4X1. Both substrates obeyed Lipinski rule of five in drug-likeness test and biological spectrum prediction showed anticarcinogenic activity. Compared to anandamide, arachidonic acid showed strong interaction with cytochrome P450 4X1 and also less health effect in certain human system in ADME-Tox prediction. These findings provide useful information on the biological role and structure-based drug design of orphan human cytochrome P450 4X1.
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Uehara S, Murayama N, Nakanishi Y, Nakamura C, Hashizume T, Zeldin DC, Yamazaki H, Uno Y. Immunochemical quantification of cynomolgus CYP2J2, CYP4A and CYP4F enzymes in liver and small intestine. Xenobiotica 2014; 45:124-30. [PMID: 25138712 DOI: 10.3109/00498254.2014.952800] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
1. An increasing number of studies have indicated the roles of CYP4 proteins in drug metabolism; however, CYP4 expression has not been measured in cynomolgus monkeys, an important animal species for drug metabolism studies. 2. In this study, cynomolgus CYP4A11, CYP4F2/3, CYP4F11 and CYP4F12, along with CYP2J2, were immunoquantified using selective antibodies in 28 livers and 35 small intestines, and their content was compared with CYP1A, CYP2A, CYP2B6, CYP2C9/19, CYP2D, CYP2E1, CYP3A4 and CYP3A5, previously quantified. 3. In livers, CYP2J2, CYP4A11, CYP4F2/3, CYP4F11 and CYP4F12, varied 1.3- to 4.3-fold, represented 11.2, 14.4, 8.0, 2.7 and 0.3% of total immunoquantified CYP1-4 proteins, respectively. 4. In small intestines, CYP2J2, CYP4F2/3, CYP4F11 and CYP4F12, varied 2.4- to 9.7-fold, represented 6.9, 36.4, 2.4 and 9.3% of total immunoquantified CYP1-4 proteins, respectively, making CYP4F the most abundant P450 subfamily in small intestines. CYP4A11 was under the detection limit in all of the samples analyzed. 5. Significant correlations were found in liver for CYP4A11 with lauric acid 11-/12-hydroxylation and for CYP4F2/3 and CYP4F11 with astemizole hydroxylation. 6. This study revealed the relatively abundant contents of cynomolgus CYP2J2, CYP4A11 and CYP4Fs in liver and/or small intestine, suggesting their potential roles for the metabolism of xenobitotics and endogenous substrates.
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Affiliation(s)
- Shotaro Uehara
- Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories, Ltd. , Kainan, Wakayama , Japan
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