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Zhou S, Zhao FL, Wang SH, Wang YR, Hong Y, Zhou Q, Geng PW, Luo QF, Cai JP, Dai DP. Assessments of CYP‑inhibition‑based drug-drug interaction between vonoprazan and poziotinib in vitro and in vivo. Pharm Biol 2023; 61:356-361. [PMID: 36728978 PMCID: PMC9897767 DOI: 10.1080/13880209.2023.2173253] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 11/16/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
CONTEXT Poziotinib and vonoprazan are two drugs mainly metabolized by CYP3A4. However, the drug-drug interaction between them is unknown. OBJECTIVE To study the interaction mechanism and pharmacokinetics of poziotinib on vonoprazan. MATERIALS AND METHODS In vitro experiments were performed with rat liver microsomes (RLMs) and the contents of vonoprazan and its metabolite were then determined with UPLC-MS/MS after incubation of RLMs with vonoprazan and gradient concentrations of poziotinib. For the in vivo experiment, rats in the poziotinib treated group were given 5 mg/kg poziotinib by gavage once daily for 7 days, and the control group was only given 0.5% CMC-Na. On Day 8, tail venous blood was collected at different time points after the gavage administration of 10 mg/kg vonoprazan, and used for the quantification of vonoprazan and its metabolite. DAS and SPSS software were used for the pharmacokinetic and statistical analyses. RESULTS In vitro experimental data indicated that poziotinib inhibited the metabolism of vonoprazan (IC50 = 10.6 μM) in a mixed model of noncompetitive and uncompetitive inhibition. The inhibitory constant Ki was 0.574 μM and the binding constant αKi was 2.77 μM. In vivo experiments revealed that the AUC(0-T) (15.05 vs. 90.95 μg/mL·h) and AUC(0-∞) (15.05 vs. 91.99 μg/mL·h) of vonoprazan increased significantly with poziotinib pretreatment. The MRT(0-∞) of vonoprazan increased from 2.29 to 5.51 h, while the CLz/F value decreased from 162.67 to 25.84 L/kg·h after pretreatment with poziotinib. CONCLUSIONS Poziotinib could significantly inhibit the metabolism of vonoprazan and more care may be taken when co-administered in the clinic.
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Affiliation(s)
- Shan Zhou
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital, National Center of Gerontology of National Health Commission, Beijing, China
| | - Fang-Ling Zhao
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital, National Center of Gerontology of National Health Commission, Beijing, China
- Peking University Fifth School of Clinical Medicine, Beijing, China
| | - Shuang-Hu Wang
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Yi-Ran Wang
- Peking University Fifth School of Clinical Medicine, Beijing, China
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Yun Hong
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Quan Zhou
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Pei-Wu Geng
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Qing-Feng Luo
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology, Beijing, China
- Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital, National Center of Gerontology of National Health Commission, Beijing, China
| | - Da-Peng Dai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital, National Center of Gerontology of National Health Commission, Beijing, China
- Peking University Fifth School of Clinical Medicine, Beijing, China
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Zou LL, Zhao FL, Qi YY, Wang SH, Zhou Q, Geng PW, Zhou YF, Zhang Q, Chen H, Dai DP, Cai JP, Ji FS. Characterization of 15 CYP2J2 variants identified in the Chinese Han population on the metabolism of ebastine and terfenadine in vitro. Front Pharmacol 2023; 14:1186824. [PMID: 37288113 PMCID: PMC10242136 DOI: 10.3389/fphar.2023.1186824] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 05/09/2023] [Indexed: 06/09/2023] Open
Abstract
Genetic polymorphism of the cytochrome P450 (CYP) gene can significantly influence the metabolism of endogenous and xenobiotic compounds. However, few studies have focused on the polymorphism of CYP2J2 and its impact on drug catalytic activity, especially in the Chinese Han population. In this study, we sequenced the promoter and exon regions of CYP2J2 in 1,163 unrelated healthy Chinese Han individuals using the multiplex PCR amplicon sequencing method. Then, the catalytic activities of the detected CYP2J2 variants were evaluated after recombinant expression in S. cerevisiae microsomes. As a result, CYP2J2*7, CYP2J2*8, 13 variations in the promoter region and 15 CYP2J2 nonsynonymous variants were detected, of which V15A, G24R, V68A, L166F and A391T were novel missense variations. Immunoblotting results showed that 11 of 15 CYP2J2 variants exhibited lower protein expression than wild-type CYP2J2.1. In vitro functional analysis results revealed that the amino acid changes of 14 variants could significantly influence the drug metabolic activity of CYP2J2 toward ebastine or terfenadine. Specifically, 4 variants with relatively higher allele frequencies, CYP2J2.8, 173_173del, K267fs and R446W, exhibited extremely low protein expression and defective catalytic activities for both substrates. Our results indicated that a high genetic polymorphism of CYP2J2 could be detected in the Chinese Han population, and most genetic variations in CYP2J2 could influence the expression and catalytic activity of CYP2J2. Our data significantly enrich the knowledge of genetic polymorphisms in CYP2J2 and provide new theoretical information for corresponding individualized medication in Chinese and other Asian populations.
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Affiliation(s)
- Li-Li Zou
- The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Fang-Ling Zhao
- The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Yu-Ying Qi
- The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Shuang-Hu Wang
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Quan Zhou
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Pei-Wu Geng
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Yun-Fang Zhou
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Qing Zhang
- Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Hao Chen
- Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Da-Peng Dai
- The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Fu-Sui Ji
- The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
- Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
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Zhao FL, Zhang Q, Wang SH, Hong Y, Zhou S, Zhou Q, Geng PW, Luo QF, Yang JF, Chen H, Cai JP, Dai DP. Identification and drug metabolic characterization of four new CYP2C9 variants CYP2C9*72- *75 in the Chinese Han population. Front Pharmacol 2022; 13:1007268. [PMID: 36582532 PMCID: PMC9792615 DOI: 10.3389/fphar.2022.1007268] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 12/01/2022] [Indexed: 12/15/2022] Open
Abstract
Cytochrome 2C9 (CYP2C9), one of the most important drug metabolic enzymes in the human hepatic P450 superfamily, is required for the metabolism of 15% of clinical drugs. Similar to other CYP2C family members, CYP2C9 gene has a high genetic polymorphism which can cause significant racial and inter-individual differences in drug metabolic activity. To better understand the genetic distribution pattern of CYP2C9 in the Chinese Han population, 931 individuals were recruited and used for the genotyping in this study. As a result, seven synonymous and 14 non-synonymous variations were identified, of which 4 missense variants were designated as new alleles CYP2C9*72, *73, *74 and *75, resulting in the amino acid substitutions of A149V, R150C, Q214H and N418T, respectively. When expressed in insect cell microsomes, all four variants exhibited comparable protein expression levels to that of the wild-type CYP2C9 enzyme. However, drug metabolic activity analysis revealed that these variants exhibited significantly decreased catalytic activities toward three CYP2C9 specific probe drugs, as compared with that of the wild-type enzyme. These data indicate that the amino acid substitution in newly designated variants can cause reduced function of the enzyme and its clinical significance still needs further investigation in the future.
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Affiliation(s)
- Fang-Ling Zhao
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China,Peking University Fifth School of Clinical Medicine, Beijing, China
| | - Qing Zhang
- Department of Cardiovascular, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Shuang-Hu Wang
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Yun Hong
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Shan Zhou
- Peking University Fifth School of Clinical Medicine, Beijing, China
| | - Quan Zhou
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Pei-Wu Geng
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Qing-Feng Luo
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Jie-Fu Yang
- Department of Cardiovascular, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Hao Chen
- Department of Cardiovascular, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China,*Correspondence: Da-Peng Dai, ; Jian-Ping Cai, ; Hao Chen,
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China,*Correspondence: Da-Peng Dai, ; Jian-Ping Cai, ; Hao Chen,
| | - Da-Peng Dai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China,Peking University Fifth School of Clinical Medicine, Beijing, China,*Correspondence: Da-Peng Dai, ; Jian-Ping Cai, ; Hao Chen,
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Hong Y, Dai DP, Cai JP, Wang SH, Wang YR, Zhao FL, Zhou S, Zhou Q, Geng PW, Zhou YF, Xu X, Shi JH, Luo QF. Effects of Simvastatin on the Metabolism of Vonoprazan in Rats Both in vitro and in vivo. Drug Des Devel Ther 2022; 16:1779-1789. [PMID: 35707687 PMCID: PMC9191837 DOI: 10.2147/dddt.s365610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 06/02/2022] [Indexed: 11/23/2022] Open
Affiliation(s)
- Yun Hong
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
| | - Da-Peng Dai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730, People’s Republic of China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730, People’s Republic of China
| | - Shuang-Hu Wang
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, 323020, People’s Republic of China
| | - Yi-Ran Wang
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
- Peking University Fifth School of Clinical Medicine, Beijing, 100730, People’s Republic of China
| | - Fang-Ling Zhao
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730, People’s Republic of China
- Peking University Fifth School of Clinical Medicine, Beijing, 100730, People’s Republic of China
| | - Shan Zhou
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730, People’s Republic of China
| | - Quan Zhou
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, 323020, People’s Republic of China
| | - Pei-Wu Geng
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, 323020, People’s Republic of China
| | - Yun-Fang Zhou
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, 323020, People’s Republic of China
| | - Xue Xu
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
| | - Ji-Hua Shi
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
| | - Qing-Feng Luo
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
- Correspondence: Qing-Feng Luo, Department of Gastroenterology, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China, Tel + 86 138 1151 9095, Email
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5
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Chen H, Dai DP, Zhou S, Liu J, Wang SH, Wu HL, Zhou Q, Geng PW, Chong J, Lü Y, Cai JP, Yang JF. An identification and functional evaluation of a novel CYP2C9 variant CYP2C9*62. Chem Biol Interact 2020; 327:109168. [PMID: 32531309 DOI: 10.1016/j.cbi.2020.109168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 03/31/2020] [Accepted: 06/08/2020] [Indexed: 12/24/2022]
Abstract
Warfarin is the most commonly used anticoagulant in the clinical treatment of thromboembolic diseases. The dose of warfarin varies significantly within populations, and the dose is closely related to the genetic polymorphisms of the CYP2C9 and VKORC1 genes. In this study, a new CYP2C9 nonsynonymous mutation (8576C > T) was detected after the genetic screening of 162 patients took warfarin. This mutation, named as the new allele CYP2C9*62, can result in an arginine to cysteine amino acid substitution at position 125 of the CYP2C9 protein (R125C). When expressed in insect cells, the protein expression of CYP2C9.62 was significantly lower than that of the wild-type, and its metabolic activity was also significantly decreased after the addition of three typical CYP2C9 probe drugs, suggesting that the new mutant can dramatically affect the metabolism of CYP2C9 drugs in vitro.
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Affiliation(s)
- Hao Chen
- Cardiovascular Department, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Da-Peng Dai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Shan Zhou
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Jian Liu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Shuang-Hu Wang
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang Province, 323000, PR China
| | - Hua-Lan Wu
- Cardiovascular Department, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Quan Zhou
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang Province, 323000, PR China
| | - Pei-Wu Geng
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang Province, 323000, PR China
| | - Jia Chong
- Cardiovascular Department, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - You Lü
- Cardiovascular Department, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China.
| | - Jie-Fu Yang
- Cardiovascular Department, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China.
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Cai J, Dai DP, Geng PW, Wang SH, Wang H, Zhan YY, Huang XX, Hu GX, Cai JP. Effects of 22 Novel CYP2D6 Variants Found in the Chinese Population on the Bufuralol and Dextromethorphan MetabolismsIn Vitro. Basic Clin Pharmacol Toxicol 2015; 118:190-9. [PMID: 26310775 DOI: 10.1111/bcpt.12478] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 08/15/2015] [Indexed: 02/01/2023]
Affiliation(s)
- Jie Cai
- The Key Laboratory of Geriatrics; Beijing Hospital & Beijing Institute of Geriatrics; Ministry of Health; Beijing China
- Department of Pharmacology; School of Pharmacy of Wenzhou Medical University; Wenzhou China
- Department of Pharmacy; Traditional Chinese Medical Hospital of Wenling; Wenling China
| | - Da-Peng Dai
- The Key Laboratory of Geriatrics; Beijing Hospital & Beijing Institute of Geriatrics; Ministry of Health; Beijing China
| | - Pei-Wu Geng
- The Laboratory of Clinical Pharmacy; The People's Hospital of Lishui; Lishui China
| | - Shuang-Hu Wang
- The Laboratory of Clinical Pharmacy; The People's Hospital of Lishui; Lishui China
| | - Hao Wang
- Department of Pharmacology; School of Pharmacy of Wenzhou Medical University; Wenzhou China
| | - Yun-Yun Zhan
- Department of Pharmacology; School of Pharmacy of Wenzhou Medical University; Wenzhou China
| | - Xiang-Xin Huang
- Department of Pharmacology; School of Pharmacy of Wenzhou Medical University; Wenzhou China
| | - Guo-Xin Hu
- Department of Pharmacology; School of Pharmacy of Wenzhou Medical University; Wenzhou China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics; Beijing Hospital & Beijing Institute of Geriatrics; Ministry of Health; Beijing China
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Dai DP, Li CB, Wang SH, Cai J, Geng PW, Zhou YF, Hu GX, Cai JP. Identification and characterization of a novel CYP2C9 allelic variant in a warfarin-sensitive patient. Pharmacogenomics 2015; 16:1475-86. [PMID: 26255664 DOI: 10.2217/pgs.15.89] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Aim: To determine the genetic basis of the low warfarin dose requirement in a Chinese patient. Materials & methods: Bi-directional sequencing of CYP2C9, VKORC1 and CYP4F2 genes was performed. CYP2C9 variants were highly expressed in yeast and insect-cell microsomes. Three typical CYP2C9 probe drugs were used to evaluate the catalytic activity. Results: A novel missense mutation (1400T>C) was identified in CYP2C9 and had been named as new allele *60. When expressed in yeast and insect cells, compared with wild-type enzyme, variant CYP2C9.60 exhibited lower protein expression capacity and showed significantly decreased metabolic activities for the hydroxylation of S-warfarin, tolbutamide and diclofenac. Conclusion: The novel mutation can greatly decrease the enzymatic activity of the CYP2C9 enzyme both in vitro and in vivo.
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Affiliation(s)
- Da-Peng Dai
- The Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China
| | - Chuan-Bao Li
- The Clinical Laboratory of Beijing Hospital, Ministry of Health, Beijing 100730, China
| | - Shuang-Hu Wang
- The Laboratory of Clinical Pharmacy, the People's Hospital of Lishui, Lishui, Zhejiang 323000, China
| | - Jie Cai
- Department of Pharmacology, School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Pei-Wu Geng
- The Laboratory of Clinical Pharmacy, the People's Hospital of Lishui, Lishui, Zhejiang 323000, China
| | - Yun-Fang Zhou
- The Laboratory of Clinical Pharmacy, the People's Hospital of Lishui, Lishui, Zhejiang 323000, China
| | - Guo-Xin Hu
- Department of Pharmacology, School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China
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Dai DP, Hu LM, Geng PW, Wang SH, Cai J, Hu GX, Cai JP. In vitro functional analysis of 24 novel CYP2C19 variants recently found in the Chinese Han population. Xenobiotica 2015; 45:1030-5. [PMID: 26153442 DOI: 10.3109/00498254.2015.1028512] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
1. CYP2C19 is a highly polymorphic enzyme responsible for the metabolism of a wide range of clinical drugs. Alterations to the CYP2C19 gene contribute to the variability of CYP2C19 enzyme activity, which causes pharmacokinetics and drug efficacies to vary and adverse drug reactions to occur in different persons. Recently, we identified 24 novel CYP2C19 allelic variants in the Chinese Han population. The purpose of present study is to assess the impact of these newly found nucleotide mutations on the enzymatic activity of the CYP2C19 protein. 2. Dual-expression vectors were constructed and transiently transfected into 293FT cells. Forty-eight hours after transfection, cells were re-suspended and incubated with two typical probe substrates, omeprazole and S-mephenytoin, to determine the activities of each variant relative to the wild-type protein. 3. Immunoblotting results showed that the protein expression levels of the CYP2C19 variants were diverse. Enzymatic ability analysis showed that the variant 35FS exhibited no functional activity, and most of the other variants showed significantly decreased metabolic activities toward both omeprazole and S-mephenytoin compared with wild-type. 4. These findings greatly enrich the knowledge of biological effects of these newly found CYP2C19 mutations and aid the application of this knowledge to future individualized drug therapy in clinic.
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Affiliation(s)
- Da-Peng Dai
- a The Key Laboratory of Geriatrics , Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health , Beijing , China
| | - Li-Ming Hu
- b Department of Pharmacy , The First People's Hospital of Wenling , Wenling , Zhejiang , China
| | - Pei-Wu Geng
- c The Laboratory of Clinical Pharmacy , The People's Hospital of Lishui , Lishui , Zhejiang , China , and
| | - Shuang-Hu Wang
- c The Laboratory of Clinical Pharmacy , The People's Hospital of Lishui , Lishui , Zhejiang , China , and
| | - Jie Cai
- a The Key Laboratory of Geriatrics , Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health , Beijing , China .,d Department of Pharmacology , School of Pharmacy, Wenzhou Medical University , Zhejiang , Wenzhou , China
| | - Guo-Xin Hu
- d Department of Pharmacology , School of Pharmacy, Wenzhou Medical University , Zhejiang , Wenzhou , China
| | - Jian-Ping Cai
- a The Key Laboratory of Geriatrics , Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health , Beijing , China
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Dai DP, Wang SH, Li CB, Geng PW, Cai J, Wang H, Hu GX, Cai JP. Identification and Functional Assessment of a New CYP2C9 Allelic Variant CYP2C9*59. Drug Metab Dispos 2015; 43:1246-9. [DOI: 10.1124/dmd.115.063412] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 05/07/2015] [Indexed: 12/19/2022] Open
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Dai DP, Geng PW, Wang SH, Cai J, Hu LM, Nie JJ, Hu JH, Hu GX, Cai JP. In VitroFunctional Assessment of 22 Newly Identified CYP2D6 Allelic Variants in the Chinese Population. Basic Clin Pharmacol Toxicol 2015; 117:39-43. [PMID: 25469868 DOI: 10.1111/bcpt.12363] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 11/25/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Da-Peng Dai
- The Key Laboratory of Geriatrics; Beijing Hospital & Beijing Institute of Geriatrics; Ministry of Health; Beijing China
| | - Pei-Wu Geng
- Department of Pharmacology; School of Pharmacy Wenzhou Medical University; Wenzhou Zhejiang China
- The Laboratory of Clinical Pharmacy; The People's Hospital of Lishui; Lishui Zhejiang China
| | - Shuang-Hu Wang
- The Laboratory of Clinical Pharmacy; The People's Hospital of Lishui; Lishui Zhejiang China
| | - Jie Cai
- Department of Pharmacology; School of Pharmacy Wenzhou Medical University; Wenzhou Zhejiang China
| | - Li-Ming Hu
- The First People's Hospital of Wenling; Wenling Zhejiang China
| | - Jing-Jing Nie
- The Key Laboratory of Geriatrics; Beijing Hospital & Beijing Institute of Geriatrics; Ministry of Health; Beijing China
| | - Ji-Hong Hu
- The Key Laboratory of Geriatrics; Beijing Hospital & Beijing Institute of Geriatrics; Ministry of Health; Beijing China
| | - Guo-Xin Hu
- Department of Pharmacology; School of Pharmacy Wenzhou Medical University; Wenzhou Zhejiang China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics; Beijing Hospital & Beijing Institute of Geriatrics; Ministry of Health; Beijing China
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Dai DP, Geng PW, Cai J, Wang SH, Nic JJ, Hu JH, Hu GX, Cai JP. 293FT is a highly suitable mammalian cell line for the in vitro enzymatic activity analysis of typical P450 proteins. Pharmazie 2015; 70:33-37. [PMID: 25975096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Mammalian cells have been widely used for the in vitro evaluation of the functional effect of allelic variants of cytochrome P450 (CYP). The aim of this study was to determine the most suitable mammalian cell line for the in vitro drug metabolism analysis of CYP variants. Three reported cell lines (COS-7, HepG2, 293T) and one fast-growing variant of the 293 cell line 293FT were transfected with vectors expressing green fluorescent protein or typical variants of CYP2C9, CYP2C19 or CYP2D6 to investigate the protein expression levels and the catalytic activity of expressed CYP allelic variants. The transfected 293FT cells had the highest protein expression level and exhibited the highest enzymatic activity, while HepG2 cells showed the lowest activity among the four tested cell lines. Simultaneously, 293FT cells still maintained the similar relative enzymatic ratio among three typical CYP2C9 variants to that of the commonly used COS-7 cells. In addition, 293FT cells could also be used for the in vitro functional evaluation of two other typical P450 proteins, CYP2C19 and CYP2D6. Therefore, the 293FT cell line is more suitable for the in vitro enzymatic activity analysis of typical P450 proteins than any other reported mammalian cell lines.
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Luo SB, Li CB, Dai DP, Wang SH, Wang ZH, Geng PW, Cai J, Jiang ZL, Pu CW, Shang K, Yuan XM, Cao YP, Hu GX, Cai JP. Characterization of a Novel CYP2C9 Mutation (1009C^|^gt;A) Detected in a Warfarin-Sensitive Patient. J Pharmacol Sci 2014; 125:150-6. [DOI: 10.1254/jphs.13189fp] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Dai DP, Wang SH, Geng PW, Hu GX, Cai JP. In vitro assessment of 36 CYP2C9 allelic isoforms found in the Chinese population on the metabolism of glimepiride. Basic Clin Pharmacol Toxicol 2013; 114:305-10. [PMID: 24118918 DOI: 10.1111/bcpt.12159] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 10/06/2013] [Indexed: 11/29/2022]
Abstract
Of the 57 reported CYP2C9 alleles, to date, 36 of them have been identified in the Chinese population. The aim of this study was to assess the catalytic characteristics of these allelic isoforms and their effects on the metabolism of glimepiride in vitro. Baculovirus-mediated expressing system was used to highly express wild-type and the 35 CYP2C9 allelic variants in insect cell microsomes. Then, the enzymatic characteristics of each variant were evaluated using glimepiride as the substrate. Reactions were performed at 37°C with the insect microsomes and 0.125-10 μM glimepiride for 40 min. After termination, the products were extracted and used for signal collection by LC-MS/MS. Of the 36 tested CYP2C9 allelic isoforms, only four variants (CYP2C9.40, CYP2C9.47, CYP2C9.51 and CYP2C9.54) exhibited similar relative clearance values to that of wild-type CYP2C9.1. In addition, one variant (CYP2C9.36) showed a higher intrinsic clearance value than the wild-type protein, while the remaining 30 CYP2C9 allelic isoforms exhibited significantly decreased clearance values (from 0.1% to 87.2%) compared to CYP2C9.1. This study provided the most comprehensive data on the enzymatic activities of all reported CYP2C9 variants in the Chinese population with regard to the commonly used antidiabetic drug, glimepiride. Our results indicate that most of the tested rare alleles significantly decrease the catalytic activity of CYP2C9 variants towards glimepiride hydroxylation in vitro.
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Affiliation(s)
- Da-Peng Dai
- The Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing, China
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Wang YH, Pan PP, Dai DP, Wang SH, Geng PW, Cai JP, Hu GX. Effect of 36 CYP2C9 variants found in the Chinese population on losartan metabolismin vitro. Xenobiotica 2013; 44:270-5. [DOI: 10.3109/00498254.2013.820007] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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