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Price CL, Warrilow AGS, Rolley NJ, Parker JE, Thoss V, Kelly DE, Corcionivoschi N, Kelly SL. Cytochrome P450 168A1 from Pseudomonas aeruginosa is involved in the hydroxylation of biologically relevant fatty acids. PLoS One 2022; 17:e0265227. [PMID: 35312722 PMCID: PMC8936499 DOI: 10.1371/journal.pone.0265227] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 02/24/2022] [Indexed: 11/26/2022] Open
Abstract
The cytochrome P450 CYP168A1 from Pseudomonas aeruginosa was cloned and expressed in Escherichia coli followed by purification and characterization of function. CYP168A1 is a fatty acid hydroxylase that hydroxylates saturated fatty acids, including myristic (0.30 min-1), palmitic (1.61 min-1) and stearic acids (1.24 min-1), at both the ω-1- and ω-2-positions. However, CYP168A1 only hydroxylates unsaturated fatty acids, including palmitoleic (0.38 min-1), oleic (1.28 min-1) and linoleic acids (0.35 min-1), at the ω-1-position. CYP168A1 exhibited a catalytic preference for palmitic, oleic and stearic acids as substrates in keeping with the phosphatidylcholine-rich environment deep in the lung that is colonized by P. aeruginosa.
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Affiliation(s)
- Claire L. Price
- Centre for Cytochrome P450 Biodiversity, Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, Wales, United Kingdom
| | - Andrew G. S. Warrilow
- Centre for Cytochrome P450 Biodiversity, Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, Wales, United Kingdom
| | - Nicola J. Rolley
- Centre for Cytochrome P450 Biodiversity, Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, Wales, United Kingdom
| | - Josie E. Parker
- Centre for Cytochrome P450 Biodiversity, Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, Wales, United Kingdom
| | - Vera Thoss
- Plant Chemistry Group, School of Chemistry, Bangor University, Bangor, Gwynedd, Wales, United Kingdom
| | - Diane E. Kelly
- Centre for Cytochrome P450 Biodiversity, Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, Wales, United Kingdom
| | - Nicolae Corcionivoschi
- Agri-Food and Biosciences Institute, Veterinary Science Division, Bacteriology Branch, Stoney Road, Stormont, Belfast, Northern Ireland, United Kingdom
- Faculty of Bioengineering of Animal Resources, Banat University of Agricultural Sciences and Veterinary Medicine, King Michael I of Romania, Timisoara, Romania
| | - Steven L. Kelly
- Centre for Cytochrome P450 Biodiversity, Institute of Life Science, Swansea University Medical School, Swansea University, Swansea, Wales, United Kingdom
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2
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Cossette C, Chourey S, Ye Q, Nagendra Reddy C, Gore V, Gravel S, Slobodchikova I, Vuckovic D, Rokach J, Powell WS. Pharmacokinetics and Metabolism of Selective Oxoeicosanoid (OXE) Receptor Antagonists and Their Effects on 5-Oxo-6,8,11,14-eicosatetraenoic Acid (5-Oxo-ETE)-Induced Granulocyte Activation in Monkeys. J Med Chem 2016; 59:10127-10146. [DOI: 10.1021/acs.jmedchem.6b00895] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chantal Cossette
- Meakins-Christie
Laboratories, Centre for Translational Biology, McGill University Health Centre, 1001 Decarie Boulevard, Montreal, Quebec H4A 3J1, Canada
| | - Shishir Chourey
- Claude
Pepper Institute and Department of Chemistry, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901-6982, United States
| | - Qiuji Ye
- Claude
Pepper Institute and Department of Chemistry, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901-6982, United States
| | - Chintam Nagendra Reddy
- Claude
Pepper Institute and Department of Chemistry, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901-6982, United States
| | - Vivek Gore
- Claude
Pepper Institute and Department of Chemistry, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901-6982, United States
| | - Sylvie Gravel
- Meakins-Christie
Laboratories, Centre for Translational Biology, McGill University Health Centre, 1001 Decarie Boulevard, Montreal, Quebec H4A 3J1, Canada
| | - Irina Slobodchikova
- Department
of Chemistry and Biochemistry and PERFORM Centre, Concordia University, 7141 Sherbrooke Street West, Montréal, Quebec H4B 1R6, Canada
| | - Dajana Vuckovic
- Department
of Chemistry and Biochemistry and PERFORM Centre, Concordia University, 7141 Sherbrooke Street West, Montréal, Quebec H4B 1R6, Canada
| | - Joshua Rokach
- Claude
Pepper Institute and Department of Chemistry, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901-6982, United States
| | - William S. Powell
- Meakins-Christie
Laboratories, Centre for Translational Biology, McGill University Health Centre, 1001 Decarie Boulevard, Montreal, Quebec H4A 3J1, Canada
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Sanders RJ, Ofman R, Duran M, Kemp S, Wanders RJA. ω-Oxidation of Very Long-chain Fatty Acids in Human Liver Microsomes. J Biol Chem 2006; 281:13180-13187. [PMID: 16547005 DOI: 10.1074/jbc.m513481200] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
X-linked adrenoleukodystrophy (X-ALD) is a severe neurodegenerative disorder biochemically characterized by elevated levels of very long-chain fatty acids (VLCFA). Excess levels of VLCFAs are thought to play an important role in the pathogenesis of X-ALD. Therefore, therapeutic approaches for X-ALD are focused on the reduction or normalization of VLCFAs. In this study, we investigated an alternative oxidation route for VLCFAs, namely omega-oxidation. The results described in this study show that VLCFAs are substrates for the omega-oxidation system in human liver microsomes. Moreover, VLCFAs were not only converted into omega-hydroxy fatty acids, but they were also further oxidized to dicarboxylic acids via cytochrome P450-mediated reactions. High sensitivity toward the specific P450 inhibitor 17-octadecynoic acid suggested that omega-hydroxylation of VLCFAs is catalyzed by P450 enzymes belonging to the CYP4A/F subfamilies. Studies with individually expressed human recombinant P450 enzymes revealed that two P450 enzymes, i.e. CYP4F2 and CYP4F3B, participate in the omega-hydroxylation of VLCFAs. Both enzymes belong to the cytochrome P450 4F subfamily and have a high affinity for VLCFAs. In summary, this study demonstrates that VLCFAs are substrates for the human omega-oxidation system, and for this reason, stimulation of the in vivo VLCFA omega-oxidation pathway may provide an alternative mode of treatment to reduce the levels of VLCFAs in patients with X-ALD.
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Affiliation(s)
- Robert-Jan Sanders
- Laboratory of Genetic Metabolic Diseases, University of Amsterdam, Academic Medical Center, 1105 AZ, Amsterdam, The Netherlands
| | - Rob Ofman
- Laboratory of Genetic Metabolic Diseases, University of Amsterdam, Academic Medical Center, 1105 AZ, Amsterdam, The Netherlands
| | - Marinus Duran
- Laboratory of Genetic Metabolic Diseases, University of Amsterdam, Academic Medical Center, 1105 AZ, Amsterdam, The Netherlands
| | - Stephan Kemp
- Laboratory of Genetic Metabolic Diseases, University of Amsterdam, Academic Medical Center, 1105 AZ, Amsterdam, The Netherlands
| | - Ronald J A Wanders
- Laboratory of Genetic Metabolic Diseases, University of Amsterdam, Academic Medical Center, 1105 AZ, Amsterdam, The Netherlands.
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Muth A, Mosandl A, Wanders RJA, Nowaczyk MJM, Baric I, Böhles H, Sewell AC. Stereoselective analysis of 2-hydroxysebacic acid in urine of patients with Zellweger syndrome and of premature infants fed with medium-chain triglycerides. J Inherit Metab Dis 2003; 26:583-92. [PMID: 14605504 DOI: 10.1023/a:1025908216639] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The chiral metabolite 2-hydroxysebacic acid (2-HS) is considered to be an important diagnostic marker for peroxisomal disorders. The pathway of formation of 2-HS, excreted in increased amounts in patients with peroxisomal diseases, is not absolutely clear. Moreover, there is no information about the enantiomeric distribution of 2-HS in human urine. Here, we describe the stereodifferentiation of 2-HS in urine samples of nine patients with Zellweger syndrome (ZS), and for the first time in urine samples of premature infants fed a medium-chain triglyceride (MCT)-containing diet. Using enantioselective multidimensional gas chromatography-mass spectrometry, an increased excretion of 2R-HS was observed in all investigated ZS patients. 2-HS was also present in urine samples of premature infants fed MCT. Analogously to the ZS patients, a dominant 2R-HS excretion in the urine samples of the premature infants was identified. The formation of 2-HS is expected to result from the same or similar pathways as described for ZS patients. Additionally, we determined the absolute configuration of urinary 3-hydroxysebacic acid (3-HS) in the cases investigated. The enantioselective analysis provides further information for the diagnosis and treatment of patients with impaired peroxisomal fatty acid oxidation. Further insight into the metabolic origin and the biochemical pathway leading to these urinary metabolites is provided.
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Affiliation(s)
- A Muth
- Institute of Food Chemistry, University of Frankfurt, Frankfurt am Main, Germany
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Allali-Hassani A, Peralba JM, Martras S, Farrés J, Parés X. Retinoids, omega-hydroxyfatty acids and cytotoxic aldehydes as physiological substrates, and H2-receptor antagonists as pharmacological inhibitors, of human class IV alcohol dehydrogenase. FEBS Lett 1998; 426:362-6. [PMID: 9600267 DOI: 10.1016/s0014-5793(98)00374-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Kinetic constants of human class IV alcohol dehydrogenase (sigmasigma-ADH) support a role of the enzyme in retinoid metabolism, fatty acid omega-oxidation, and elimination of cytotoxic aldehydes produced by lipid peroxidation. Class IV is the human ADH form most efficient in the reduction of 4-hydroxynonenal (k(cat)/Km: 39,500 mM(-1) min(-1)). Class IV shows high activity with all-trans-retinol and 9-cis-retinol, while 13-cis-retinol is not a substrate but an inhibitor. Both all-trans-retinoic and 13-cis-retinoic acids are potent competitive inhibitors of retinol oxidation (Ki: 3-10 microM) which can be a basis for the regulation of the retinoic acid generation and of the pharmacological actions of the 13-cis-isomer. The inhibition of class IV retinol oxidation by ethanol (Ki: 6-10 mM) may be the origin of toxic and teratogenic effects of ethanol. H2-receptor antagonists are poor inhibitors of human and rat classes I and IV (Ki > 0.3 mM) suggesting a small interference in ethanol metabolism at the pharmacological doses of these common drugs.
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Affiliation(s)
- A Allali-Hassani
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Bellaterra, Spain
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Fromenty B, Pessayre D. Inhibition of mitochondrial beta-oxidation as a mechanism of hepatotoxicity. Pharmacol Ther 1995; 67:101-54. [PMID: 7494860 DOI: 10.1016/0163-7258(95)00012-6] [Citation(s) in RCA: 442] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Severe and prolonged impairment of mitochondrial beta-oxidation leads to microvesicular steatosis, and, in severe forms, to liver failure, coma and death. Impairment of mitochondrial beta-oxidation may be either genetic or acquired, and different causes may add their effects to inhibit beta-oxidation severely and trigger the syndrome. Drugs and some endogenous compounds can sequester coenzyme A and/or inhibit mitochondrial beta-oxidation enzymes (aspirin, valproic acid, tetracyclines, several 2-arylpropionate anti-inflammatory drugs, amineptine and tianeptine); they may inhibit both mitochondrial beta-oxidation and oxidative phosphorylation (endogenous bile acids, amiodarone, perhexiline and diethylaminoethoxyhexestrol), or they may impair mitochondrial DNA transcription (interferon-alpha), or decrease mitochondrial DNA replication (dideoxynucleoside analogues), while other compounds (ethanol, female sex hormones) act through a combination of different mechanisms. Any investigational molecule should be screened for such effects.
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Affiliation(s)
- B Fromenty
- Institut National de la Santé et de la Recherche Médicale Unité 24, Hôpital Beaujon, Clichy, France
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