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Horiyama S, Hayama N, Yoneyama H, Usami Y, Haginaka J. Identification of novel metabolites of abiraterone in human serum and their metabolic pathways. ANAL SCI 2024; 40:67-74. [PMID: 37831314 DOI: 10.1007/s44211-023-00431-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 09/20/2023] [Indexed: 10/14/2023]
Abstract
Two novel abiraterone (Abi, 3β-OH-Abi) metabolites in human serum were identified as 3α-OH-Abi and Δ5-Abi (D5A). Both metabolites were confirmed by their retention times on LC/MS and their product-ion mass spectra on LC-MS/MS compared to those of authentic compounds, which were chemically synthesized. The plausible metabolic pathways of these two metabolites are as follows: Abi is first oxidized to D5A by 3β-hydroxysteroid dehydrogenase (3β-HSD) and then irreversibly converted to Δ4-Abi (D4A) by ∆5-∆4 isomerase. Presumably, D5A detection is difficult because of its rapid conversion to D4A and its low concentration in serum samples. In contrast, the low concentration 3α-OH-Abi was generated by reducing the remaining D5A using 3α-hydroxysteroid dehydrogenase (3α-HSD).
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Affiliation(s)
- Shizuyo Horiyama
- School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women's University, 11-68, Koshien Kyuban-Cho, Nishinomiya, 663-8179, Japan.
| | - Noboru Hayama
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan.
| | - Hiroki Yoneyama
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Yoshihide Usami
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Jun Haginaka
- Institute for Biosciences, Mukogawa Women's University, 11-68, Koshien Kyuban-Cho, Nishinomiya, 663-8179, Japan
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Chamizo-Ampudia A, Getino L, Luengo JM, Olivera ER. Isolation of Environmental Bacteria Able to Degrade Sterols and/or Bile Acids: Determination of Cholesterol Oxidase and Several Hydroxysteroid Dehydrogenase Activities in Rhodococcus, Gordonia, and Pseudomonas putida. Methods Mol Biol 2023; 2704:25-42. [PMID: 37642836 DOI: 10.1007/978-1-0716-3385-4_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Interest about the isolation and characterization of steroid-catabolizing bacteria has increased over time due to the massive release of these recalcitrant compounds and their deleterious effects or their biotransformation derivatives as endocrine disruptors for wildlife, as well as their potential use in biotechnological approaches for the synthesis of pharmacological compounds. Thus, in this chapter, an isolation protocol to select environmental bacteria able to degrade sterols, bile acids, and androgens is shown. Moreover, procedures for the determination of cholesterol oxidase or different hydroxysteroid dehydrogenase activities in Pseudomonas putida DOC21, Rhodococcus sp. HE24.12, Gordonia sp. HE24.4J and Gordonia sp. HE24.3 are also detailed.
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Affiliation(s)
- Alejandro Chamizo-Ampudia
- Área de Bioquímica y Biología Molecular, Departamento de Biología Molecular, Facultad de Veterinaria, Universidad de León, León, Spain.
| | - Luis Getino
- Área de Bioquímica y Biología Molecular, Departamento de Biología Molecular, Facultad de Veterinaria, Universidad de León, León, Spain
| | - José M Luengo
- Área de Bioquímica y Biología Molecular, Departamento de Biología Molecular, Facultad de Veterinaria, Universidad de León, León, Spain
| | - Elias R Olivera
- Área de Bioquímica y Biología Molecular, Departamento de Biología Molecular, Facultad de Veterinaria, Universidad de León, León, Spain
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Mao B, Wu C, Zheng W, Shen Q, Wang Y, Wang Q, Lin H, Li X, Sun J, Ge RS. Methoxychlor and its metabolite HPTE inhibit rat neurosteroidogenic 3α-hydroxysteroid dehydrogenase and retinol dehydrogenase 2. Neurosci Lett 2018; 684:169-174. [PMID: 30107201 DOI: 10.1016/j.neulet.2018.08.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 07/30/2018] [Accepted: 08/09/2018] [Indexed: 01/28/2023]
Abstract
Methoxychlor is primarily used as an insecticide and it is widely present in the environment. The objective of the present study was to investigate the direct effects of methoxychlor and its metabolite hydroxychlor (HPTE) on rat neurosteroidogenic 3α-hydroxysteroid dehydrogenase (AKR1C14) and retinol dehydrogenase 2 (RDH2) activities. Rat AKR1C14 and RDH2 were cloned and expressed in COS-1 cells, and the effects of methoxychlor and HPTE on these enzymes were measured. HPTE was more potent to inhibit AKR1C14 and RDH2 activities than methoxychlor, with IC50 values of 2.602 ± 0.057 μM and 20.473 ± 0.049 μM, respectively, while those of methoxychlor were over 100 μM. HPTE competitively inhibited AKR1C14 and RDH2 when steroid substrates were used, while it showed a mode of mixed inhibition on these enzymes when NADPH/NAD+ were used. We elucidated the binding mode of methoxychlor and HPTE to the crystal structure of AKR1C14 by molecular docking and found that HPTE had higher affinity with the enzyme than methoxychlor. In conclusion, HPTE is more potent than methoxychlor to inhibit both AKR1C14 and RDH2.
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Affiliation(s)
- Baiping Mao
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Chengyun Wu
- Department of Respiratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, China
| | - Wenwen Zheng
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Qiuxia Shen
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Yiyan Wang
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Qiufan Wang
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Han Lin
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Xiaoheng Li
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Jianliang Sun
- Department of Anesthesia, Hangzhou Hospital Affiliated to Zhejiang University School of Medicine, Hangzhou First People's Hospital, Hangzhou 310006, China.
| | - Ren-Shan Ge
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
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Chen J, Gao X, Hong L, Ma L, Li Y. Expression, purification and functional characterization of a novel 3α-hydroxysteroid dehydrogenase from Pseudomonas aeruginosa. Protein Expr Purif 2015; 115:102-8. [PMID: 26193374 DOI: 10.1016/j.pep.2015.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Revised: 06/27/2015] [Accepted: 07/15/2015] [Indexed: 12/17/2022]
Abstract
3α-Hydroxysteroid dehydrogenase (3α-HSD) catalyzes the oxidation of the 3-hydroxyl group of steroids. The enzymatic conversion is a critical step in the enzymatic assay of urinary sulfated bile acids (SBAs), which is a valuable diagnosis index of hepatobiliary diseases. However, the source of 3α-HSD for clinical applications is limited. In this study, an open reading frame (ORF) encoding a novel 3α-HSD was successfully cloned from Pseudomonas aeruginosa and expressed in Escherichia coli BL21 (DE3). The recombinant protein was purified by immobilized metal ion affinity chromatography. Enzyme characterization studies revealed that the protein has 3α-HSD activity and the Km value for sodium cholate is 1.06 mmol L(-1). More than 60% relative enzyme activity was observed in a wide range of pH and temperature, with an optimum pH at 8.0 and an optimum temperature at 30°C. The enzyme's good thermostability under 40°C would be favorable in clinical applications. Ion interference experiments indicated that Zn(2+) was an activating cofactor which increased the enzyme activity 1.75-fold. With the favorable characteristics mentioned above, the new 3α-HSD is a promising enzyme for clinical applications. More importantly, the present work is the first report on a 3α-HSD from P. aeruginosa.
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Affiliation(s)
- Jianmin Chen
- West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China; School of Basic Medical Sciences, Chengdu Medical College, Chengdu 610500, China.
| | - Xiufeng Gao
- West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China.
| | - Lin Hong
- West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Liting Ma
- West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Yongsheng Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
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Yang H, Fang Y, Wang Z, Zhang L. One step affinity recovery of 3α-hydroxysteroid dehydrogenase from cloned Escherichia coli. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 991:79-84. [PMID: 25913427 DOI: 10.1016/j.jchromb.2015.01.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 01/27/2015] [Accepted: 01/30/2015] [Indexed: 11/21/2022]
Abstract
3α-Hydroxysteroid dehydrogenase (3α-HSD), from Comamonas Testosterone, catalyze reversibly the oxidoreduction of 3α-hydroxyl groups of the steroid hormones. The gene encoding 3α-HSD (hsdA) from Comamonas Testosterone was expressed in Escherchia coli BL21 (DE3). A protocol for recovering 3α-HSD based on affinity strategy was designed and employed. Deoxycholic acid was chosen as the affinity ligand, and it was linked to Sepharose 4B with the aid of the spacers as cyanuric chloride and ethanediamine. With this specific affinity medium, the enzyme recovery process consisted of only one chromatography step to capture 3α-HSD. The target protein, analyzed on HPLC Agilent SEC-5 column, was of 94% pure among the captured protein, and 98% with SDS-PAGE analysis. The yield of the expressed enzyme was 8.8% of crude extracted proteins; the recovery yield of 3α-HSD was 73.2%. 3α-HSD was revealed as a non-covalent homodimer with molecular mass of ∼56kDa by 15.0% SDS-PAGE analysis and SE-HPLC analysis. The desorption constant Kd and the theoretical maximum absorption Qmax on the affinity medium were 4.5μg/g medium and 21.3mg/g medium, respectively.
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