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Leow JWH, Chan ECY. CYP2J2-mediated metabolism of arachidonic acid in heart: A review of its kinetics, inhibition and role in heart rhythm control. Pharmacol Ther 2024; 258:108637. [PMID: 38521247 DOI: 10.1016/j.pharmthera.2024.108637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 02/06/2024] [Accepted: 03/11/2024] [Indexed: 03/25/2024]
Abstract
Cytochrome P450 2 J2 (CYP2J2) is primarily expressed extrahepatically and is the predominant epoxygenase in human cardiac tissues. This highlights its key role in the metabolism of endogenous substrates. Significant scientific interest lies in cardiac CYP2J2 metabolism of arachidonic acid (AA), an omega-6 polyunsaturated fatty acid, to regioisomeric bioactive epoxyeicosatrienoic acid (EET) metabolites that show cardioprotective effects including regulation of cardiac electrophysiology. From an in vitro perspective, the accurate characterization of the kinetics of CYP2J2 metabolism of AA including its inhibition and inactivation by drugs could be useful in facilitating in vitro-in vivo extrapolations to predict drug-AA interactions in drug discovery and development. In this review, background information on the structure, regulation and expression of CYP2J2 in human heart is presented alongside AA and EETs as its endogenous substrate and metabolites. The in vitro and in vivo implications of the kinetics of this endogenous metabolic pathway as well as its perturbation via inhibition and inactivation by drugs are elaborated. Additionally, the role of CYP2J2-mediated metabolism of AA to EETs in cardiac electrophysiology will be expounded.
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Affiliation(s)
- Jacqueline Wen Hui Leow
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Eric Chun Yong Chan
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore.
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Ng TM, Wang Z, Chan ECY. Physiologically-based pharmacokinetic modelling guided dose evaluations of nirmatrelvir/ritonavir in renal impairment for the management of COVID-19. Br J Clin Pharmacol 2024. [PMID: 38616514 DOI: 10.1111/bcp.16074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/06/2024] [Accepted: 03/21/2024] [Indexed: 04/16/2024] Open
Abstract
We aimed to address factors contributing to the pharmacokinetic changes of nirmatrelvir/ritonavir in renal impaired (RI) patients and recommend dosing adjustment via a physiologically-based pharmacokinetic (PBPK) modelling approach. A PBPK model of nirmatrelvir/ritonavir was developed via Simcyp® Simulator. Sensitivity analysis of the influence of hepatic CYP3A4 intrinsic clearance and abundance, as well as hepatic non-CYP3A4 metabolism (other human liver microsomes [HLM] CLint) was performed to evaluate the effects of RI on oral clearance of nirmatrelvir. Other HLM CLint, the most sensitive parameter, was adjusted, and the simulated plasma concentration profiles of nirmatrelvir in severe RI subjects were within the therapeutic index of 292-10 000 ng/mL for dosing regimens of loading doses of 300/100 mg followed by 150/100 mg or 75/100 mg twice daily of nirmatrelvir/ritonavir. Considering that nirmatrelvir is available as a 150 mg tablet, we recommend 300/100 mg followed by 150/100 mg twice daily as the dosing regimen to be investigated in severe RI.
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Affiliation(s)
- Tat Ming Ng
- Department of Pharmacy and Pharmaceutical Sciences, Faculty of Science, National University of Singapore, Singapore, Singapore
- Division of Pharmacy, Tan Tock Seng Hospital, Novena, Singapore
| | - Ziteng Wang
- Department of Pharmacy and Pharmaceutical Sciences, Faculty of Science, National University of Singapore, Singapore, Singapore
| | - Eric Chun Yong Chan
- Department of Pharmacy and Pharmaceutical Sciences, Faculty of Science, National University of Singapore, Singapore, Singapore
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Rohr BS, Krohmer E, Foerster KI, Burhenne J, Schulz M, Blank A, Mikus G, Haefeli WE. Time Course of the Interaction Between Oral Short-Term Ritonavir Therapy with Three Factor Xa Inhibitors and the Activity of CYP2D6, CYP2C19, and CYP3A4 in Healthy Volunteers. Clin Pharmacokinet 2024; 63:469-481. [PMID: 38393578 PMCID: PMC11052790 DOI: 10.1007/s40262-024-01350-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/29/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND We investigated the effect of a 5-day low-dose ritonavir therapy, as it is used in the treatment of COVID-19 with nirmatrelvir/ritonavir, on the pharmacokinetics of three factor Xa inhibitors (FXaI). Concurrently, the time course of the activities of the cytochromes P450 (CYP) 3A4, 2C19, and 2D6 was assessed. METHODS In an open-label, fixed sequence clinical trial, the effect and duration of a 5-day oral ritonavir (100 mg twice daily) treatment on the pharmacokinetics of three oral microdosed FXaI (rivaroxaban 25 µg, apixaban 25 µg, and edoxaban 50 µg) and microdosed probe drugs (midazolam 25 µg, yohimbine 50 µg, and omeprazole 100 µg) was evaluated in eight healthy volunteers. The plasma concentrations of all drugs were quantified using validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) methods and pharmacokinetics were analysed using non-compartmental analyses. RESULTS Ritonavir increased the exposure of apixaban, edoxaban, and rivaroxaban, but to a different extent the observed area under the plasma concentration-time curve (geometric mean ratio 1.29, 1.46, and 1.87, respectively). A strong CYP3A4 inhibition (geometric mean ratio > 10), a moderate CYP2C19 induction 2 days after ritonavir (0.64), and no alteration of CYP2D6 were observed. A CYP3A4 recovery half-life of 2.3 days was determined. CONCLUSION This trial with three microdosed FXaI suggests that at most the rivaroxaban dose should be reduced during short-term ritonavir, and only in patients receiving high maintenance doses. Thorough time series analyses demonstrated differential effects on three different drug-metabolising enzymes over time with immediate profound inhibition of CYP3A4 and only slow recovery after discontinuation. CLINICAL TRIAL REGISTRATION EudraCT number: 2021-006643-39.
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Affiliation(s)
- Brit S Rohr
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Medical Faculty of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Evelyn Krohmer
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Medical Faculty of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Kathrin I Foerster
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Medical Faculty of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Jürgen Burhenne
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Medical Faculty of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Martin Schulz
- Drug Commission of German Pharmacists and Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Antje Blank
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Medical Faculty of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Gerd Mikus
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Medical Faculty of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Walter E Haefeli
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Medical Faculty of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany.
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Wiley AM, Yang J, Madhani R, Nath A, Totah RA. Investigating the association between CYP2J2 inhibitors and QT prolongation: a literature review. Drug Metab Rev 2024; 56:145-163. [PMID: 38478383 DOI: 10.1080/03602532.2024.2329928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 03/06/2024] [Indexed: 03/21/2024]
Abstract
Drug withdrawal post-marketing due to cardiotoxicity is a major concern for drug developers, regulatory agencies, and patients. One common mechanism of cardiotoxicity is through inhibition of cardiac ion channels, leading to prolongation of the QT interval and sometimes fatal arrythmias. Recently, oxylipin signaling compounds have been shown to bind to and alter ion channel function, and disruption in their cardiac levels may contribute to QT prolongation. Cytochrome P450 2J2 (CYP2J2) is the predominant CYP isoform expressed in cardiomyocytes, where it oxidizes arachidonic acid to cardioprotective epoxyeicosatrienoic acids (EETs). In addition to roles in vasodilation and angiogenesis, EETs bind to and activate various ion channels. CYP2J2 inhibition can lower EET levels and decrease their ability to preserve cardiac rhythm. In this review, we investigated the ability of known CYP inhibitors to cause QT prolongation using Certara's Drug Interaction Database. We discovered that among the multiple CYP isozymes, CYP2J2 inhibitors were more likely to also be QT-prolonging drugs (by approximately 2-fold). We explored potential binding interactions between these inhibitors and CYP2J2 using molecular docking and identified four amino acid residues (Phe61, Ala223, Asn231, and Leu402) predicted to interact with QT-prolonging drugs. The four residues are located near the opening of egress channel 2, highlighting the potential importance of this channel in CYP2J2 binding and inhibition. These findings suggest that if a drug inhibits CYP2J2 and interacts with one of these four residues, then it may have a higher risk of QT prolongation and more preclinical studies are warranted to assess cardiovascular safety.
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Affiliation(s)
- Alexandra M Wiley
- Department of Medicinal Chemistry, University of WA School of Pharmacy, Seattle, WA, USA
| | - Jade Yang
- Department of Medicinal Chemistry, University of WA School of Pharmacy, Seattle, WA, USA
| | - Rivcka Madhani
- Department of Medicinal Chemistry, University of WA School of Pharmacy, Seattle, WA, USA
| | - Abhinav Nath
- Department of Medicinal Chemistry, University of WA School of Pharmacy, Seattle, WA, USA
| | - Rheem A Totah
- Department of Medicinal Chemistry, University of WA School of Pharmacy, Seattle, WA, USA
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Tamemoto Y, Shibata Y, Hashimoto N, Sato H, Hisaka A. Involvement of multiple cytochrome P450 isoenzymes in drug interactions between ritonavir and direct oral anticoagulants. Drug Metab Pharmacokinet 2023; 53:100498. [PMID: 37778107 DOI: 10.1016/j.dmpk.2023.100498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/20/2023] [Accepted: 02/14/2023] [Indexed: 02/21/2023]
Abstract
Herein, we aimed to determine the significance of drug interactions (DIs) between ritonavir and direct oral anticoagulants (DOACs) and identify the involved cytochrome P450 (CYP) isoenzymes. Using an in vitro cocktail method with human liver microsomes (HLM), we observed that ritonavir strongly inhibited CYPs in the following order: CYP3A, CYP2C8, CYP2D6, CYP2C9, CYP2C19, CYP2B6, and CYP2J2 (IC50: 0.023-6.79 μM). The degree of CYP2J2 inhibition was inconclusive, given the substantial discrepancy between the HLM and human expression system. Selective inhibition of CYP3A decreased the O-demethylation of apixaban by only 13.4%, and the involvement of multiple CYP isoenzymes was suggested, all of which were inhibited by ritonavir. Multiple CYP isoenzymes contributed also to the metabolism of rivaroxaban. Replacement of the incubation medium with phosphate buffer instead of HEPES enhanced apixaban hydroxylation. On surveying the FDA Adverse Event Reporting System, we detected that the signal of the proportional reporting ratio of "death" and found increase for "hemoglobin decreased" (12.5-fold) and "procedural hemorrhage" (201.9-fold) on administering apixaban with ritonavir; these were far less significant for other CYP3A inhibitors. Overall, these findings suggest that co-administration of ritonavir-boosted drugs with DOACs may induce serious DIs owing to the simultaneous inhibition of multiple CYP isoenzymes.
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Affiliation(s)
- Yuta Tamemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8675, Japan.
| | - Yukihiro Shibata
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8675, Japan; Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1, Tanabe-dori, Mizuho-ku, Nagoya-shi, Aichi, 467-8603, Japan.
| | - Natsumi Hashimoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8675, Japan.
| | - Hiromi Sato
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8675, Japan.
| | - Akihiro Hisaka
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8675, Japan.
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Ye L, Fan S, Zhao P, Wu C, Liu M, Hu S, Wang P, Wang H, Bi H. Potential herb‒drug interactions between anti-COVID-19 drugs and traditional Chinese medicine. Acta Pharm Sin B 2023:S2211-3835(23)00203-4. [PMID: 37360014 PMCID: PMC10239737 DOI: 10.1016/j.apsb.2023.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 03/21/2023] [Accepted: 04/20/2023] [Indexed: 06/28/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has spread worldwide. Effective treatments against COVID-19 remain urgently in need although vaccination significantly reduces the incidence, hospitalization, and mortality. At present, antiviral drugs including Nirmatrelvir/Ritonavir (PaxlovidTM), Remdesivir, and Molnupiravir have been authorized to treat COVID-19 and become more globally available. On the other hand, traditional Chinese medicine (TCM) has been used for the treatment of epidemic diseases for a long history. Currently, various TCM formulae against COVID-19 such as Qingfei Paidu decoction, Xuanfei Baidu granule, Huashi Baidu granule, Jinhua Qinggan granule, Lianhua Qingwen capsule, and Xuebijing injection have been widely used in clinical practice in China, which may cause potential herb-drug interactions (HDIs) in patients under treatment with antiviral drugs and affect the efficacy and safety of medicines. However, information on potential HDIs between the above anti-COVID-19 drugs and TCM formulae is lacking, and thus this work seeks to summarize and highlight potential HDIs between antiviral drugs and TCM formulae against COVID-19, and especially pharmacokinetic HDIs mediated by metabolizing enzymes and/or transporters. These well-characterized HDIs could provide useful information on clinical concomitant medicine use to maximize clinical outcomes and minimize adverse and toxic effects.
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Affiliation(s)
- Ling Ye
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening,School of Pharmaceutical Sciences,Southern Medical University,Guangzhou 510515,China
| | - Shicheng Fan
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening,School of Pharmaceutical Sciences,Southern Medical University,Guangzhou 510515,China
| | - Pengfei Zhao
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation,School of Pharmaceutical Sciences,Sun Yat-sen University,Guangzhou 510006,China
| | - Chenghua Wu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening,School of Pharmaceutical Sciences,Southern Medical University,Guangzhou 510515,China
| | - Menghua Liu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening,School of Pharmaceutical Sciences,Southern Medical University,Guangzhou 510515,China
| | - Shuang Hu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening,School of Pharmaceutical Sciences,Southern Medical University,Guangzhou 510515,China
| | - Peng Wang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening,School of Pharmaceutical Sciences,Southern Medical University,Guangzhou 510515,China
| | - Hongyu Wang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening,School of Pharmaceutical Sciences,Southern Medical University,Guangzhou 510515,China
| | - Huichang Bi
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening,School of Pharmaceutical Sciences,Southern Medical University,Guangzhou 510515,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] [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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Bajwa N, Mahal S, Naryal S, Singh PA, Baldi A. Development of Novel Solid Nanostructured Lipid Carriers for Bioavailability Enhancement Using a Quality by Design Approach. AAPS PharmSciTech 2022; 23:253. [DOI: 10.1208/s12249-022-02386-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/31/2022] [Indexed: 11/30/2022] Open
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Loos NHC, Beijnen JH, Schinkel AH. The Mechanism-Based Inactivation of CYP3A4 by Ritonavir: What Mechanism? Int J Mol Sci 2022; 23:ijms23179866. [PMID: 36077262 PMCID: PMC9456214 DOI: 10.3390/ijms23179866] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Ritonavir is the most potent cytochrome P450 (CYP) 3A4 inhibitor in clinical use and is often applied as a booster for drugs with low oral bioavailability due to CYP3A4-mediated biotransformation, as in the treatment of HIV (e.g., lopinavir/ritonavir) and more recently COVID-19 (Paxlovid or nirmatrelvir/ritonavir). Despite its clinical importance, the exact mechanism of ritonavir-mediated CYP3A4 inactivation is still not fully understood. Nonetheless, ritonavir is clearly a potent mechanism-based inactivator, which irreversibly blocks CYP3A4. Here, we discuss four fundamentally different mechanisms proposed for this irreversible inactivation/inhibition, namely the (I) formation of a metabolic-intermediate complex (MIC), tightly coordinating to the heme group; (II) strong ligation of unmodified ritonavir to the heme iron; (III) heme destruction; and (IV) covalent attachment of a reactive ritonavir intermediate to the CYP3A4 apoprotein. Ritonavir further appears to inactivate CYP3A4 and CYP3A5 with similar potency, which is important since ritonavir is applied in patients of all ethnicities. Although it is currently not possible to conclude what the primary mechanism of action in vivo is, it is unlikely that any of the proposed mechanisms are fundamentally wrong. We, therefore, propose that ritonavir markedly inactivates CYP3A through a mixed set of mechanisms. This functional redundancy may well contribute to its overall inhibitory efficacy.
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Affiliation(s)
- Nancy H. C. Loos
- The Netherlands Cancer Institute, Division of Pharmacology, 1066 CX Amsterdam, The Netherlands
| | - Jos H. Beijnen
- Faculty of Science, Department of Pharmaceutical Sciences, Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht University, 3584 CS Utrecht, The Netherlands
- The Netherlands Cancer Institute, Division of Pharmacy and Pharmacology, 1066 CX Amsterdam, The Netherlands
| | - Alfred H. Schinkel
- The Netherlands Cancer Institute, Division of Pharmacology, 1066 CX Amsterdam, The Netherlands
- Correspondence: ; Tel.: +31-205122046
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Abstract
INTRODUCTION Cytochrome P450s (CYPs) are a superfamily of monooxygenases with diverse biological roles. CYP2J2 is an isozyme highly expressed in the heart where it metabolizes endogenous substrates such as N-3/N-6 polyunsaturated fatty acids (PUFA) to produce lipid mediators involved in homeostasis and cardioprotective responses. Expanding our knowledge of the role CYP2J2 has within the heart is important for understanding its impact on cardiac health and disease. AREAS COVERED The objective of this review was to assess the state of knowledge regarding cardiac CYP2J2. A literature search was conducted using PubMed-MEDLINE (from 2022 and earlier) to evaluate relevant studies regarding CYP2J2 mediated cardioprotection, small molecule modulators, effects of CYP2J2 substrates toward biologically relevant effects and implications of CYP2J2 polymorphisms and sexual dimorphism in the heart. EXPERT OPINION Cardiac CYP2J2-mediated metabolism of endogenous and exogenous substrates have been shown to impact cardiac function. Identifying individual factors, like sex and age, that affect CYP2J2 require further elucidation to better understand CYP2J2's clinical relevance. Resolving the biological targets and activities of CYP2J2-derived PUFA metabolites will be necessary to safely target CYP2J2 and design novel analogues. Targeting CYP2J2 for therapeutic aims offers a potential novel approach to regulating cardiac homeostasis, drug metabolism and cardioprotection.
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Zhao T, Li X, Chen Y, Du J, Chen X, Wang D, Wang L, Zhao S, Wang C, Meng Q, Sun H, Liu K, Wu J. Risk assessment and molecular mechanism study of drug-drug interactions between rivaroxaban and tyrosine kinase inhibitors mediated by CYP2J2/3A4 and BCRP/P-gp. Front Pharmacol 2022; 13:914842. [PMID: 36071847 PMCID: PMC9441481 DOI: 10.3389/fphar.2022.914842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/14/2022] [Indexed: 11/21/2022] Open
Abstract
Cancer patients generally has a high risk of thrombotic diseases. However, anticoagulant therapy always aggravates bleeding risks. Rivaroxaban is one of the most widely used direct oral anticoagulants, which is used as anticoagulant treatment or prophylaxis in clinical practice. The present study aimed to systemically estimate the combination safety of rivaroxaban with tyrosine kinase inhibitors (TKIs) based on human cytochrome P450 (CYPs) and efflux transporters and to explore the drug–drug interaction (DDI) mechanisms in vivo and in vitro. In vivo pharmacokinetic experiments and in vitro enzyme incubation assays and bidirectional transport studies were conducted. Imatinib significantly increased the rivaroxaban Cmax value by 90.43% (p < 0.05) and the area under the curve value by 119.96% (p < 0.01) by inhibiting CYP2J2- and CYP3A4-mediated metabolism and breast cancer resistance protein (BCRP)- and P-glycoprotein (P-gp)-mediated efflux transportation in the absorption phase. In contrast, the combination of sunitinib with rivaroxaban reduced the exposure in vivo by 62.32% (p < 0.05) and the Cmax value by 72.56% (p < 0.05). In addition, gefitinib potently inhibited CYP2J2- and CYP3A4-mediated rivaroxaban metabolism with Ki values of 2.99 μΜ and 4.91 μΜ, respectively; however, it almost did not affect the pharmacokinetics of rivaroxaban in vivo. Taken together, clinically significant DDIs were observed in the combinations of rivaroxaban with imatinib and sunitinib. Imatinib increased the bleeding risks of rivaroxaban, while sunitinib had a risk of reducing therapy efficiency. Therefore, more attention should be paid to aviod harmful DDIs in the combinations of rivaroxaban with TKIs.
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Affiliation(s)
- Tingting Zhao
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Xuening Li
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Yanwei Chen
- Department of Pharmacy, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jie Du
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Xiaodong Chen
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Dalong Wang
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Liyan Wang
- Department of Pharmacy, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Shan Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Changyuan Wang
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, China
| | - Qiang Meng
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, China
| | - Huijun Sun
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, China
| | - Kexin Liu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, China
| | - Jingjing Wu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, China
- *Correspondence: Jingjing Wu,
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12
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Duan S, Jia Y, Zhu Z, Wang L, Xu P, Wang Y, Di B, Hu C. Induction of CYP450 by illicit drugs: Studies using an in vitro 3D spheroidal model in comparison to animals. Toxicol Lett 2022; 367:88-95. [PMID: 35914676 DOI: 10.1016/j.toxlet.2022.07.815] [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: 01/12/2022] [Revised: 07/24/2022] [Accepted: 07/28/2022] [Indexed: 12/08/2022]
Abstract
Information regarding the metabolism of illicit drugs is under urgent need for toxicological assessment. Its development, however, is limited by the currently available animal models. To this end, we proposed three-dimensional (3D) HepaRG spheroids as an in vitro model to study the effects of illicit drugs on hepatic cytochrome P450 (CYP450) enzymes and potential drug-drug interactions (DDIs). By comparing the results from animal and cell experiments, we confirmed the significant impact of heroin, morphine, tetrahydrocannabinol, and fentanyl on CYP450 enzymes, and the 3D spheroids results were in good agreement with the animal results for 2B6, 2C19, 2D6. Using 3D HepaRG spheroids, we demonstrated DDIs between heroin as a 2B6 perpetrator and clinical medicine for cancer, depression, and illicit drug withdrawal. Specifically, the clearance rate of 5.4μM bupropion was increased by 214% under DDI with 5µM heroin, highlighting the importance of DDI pre-screening and individualized medication guidance for illicit drug users. This research contributes to the growing body of evidence regarding the metabolic toxicity of illicit drugs and suggests 3D HepaRG spheroids as a high-throughput and cost-efficient platform for DDI analysis.
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Affiliation(s)
- Shiqi Duan
- China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, No. 24 Tongjiaxiang Road, Nanjing 210009, China
| | - Yan Jia
- China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, No. 24 Tongjiaxiang Road, Nanjing 210009, China
| | - Zhihang Zhu
- China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, No. 24 Tongjiaxiang Road, Nanjing 210009, China
| | - Lancheng Wang
- China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, No. 24 Tongjiaxiang Road, Nanjing 210009, China
| | - Peng Xu
- Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing, China
| | - Youmei Wang
- Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing, China
| | - Bin Di
- China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, No. 24 Tongjiaxiang Road, Nanjing 210009, China.
| | - Chi Hu
- China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, No. 24 Tongjiaxiang Road, Nanjing 210009, China.
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13
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Wang Z, Chan ECY. Physiologically Based Pharmacokinetic Modelling-Guided Dose Management of Oral Anticoagulants when Initiating Paxlovid for COVID-19 Treatment. Clin Pharmacol Ther 2022; 112:803-807. [PMID: 35712802 PMCID: PMC9349724 DOI: 10.1002/cpt.2687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/12/2022] [Indexed: 11/05/2022]
Abstract
Patients with coronavirus disease 2019 (COVID‐19) with cardiovascular diseases who are at higher risk of progressing to critical illness should be treated with nirmatrelvir/ritonavir (Paxlovid). Ritonavir, the booster in nirmatrelvir/ritonavir, modulates multiple drug metabolizing enzymes and transporters, complicating its use in real‐world clinics. We aimed to apply physiologically‐based pharmacokinetic (PBPK) modeling to simulate the complex drug–drug interactions (DDIs) of ritonavir with two anticoagulants, rivaroxaban and racemic warfarin, to address this important clinical conundrum. Simulations were implemented within Simcyp Simulator. Compound and population models were adopted from Simcyp and our previous studies. Upon verification and validation of the PBPK model of ritonavir, prospective DDI simulations with the anticoagulants were performed in both the general population (20–65 years) and geriatric subjects (65–85 years) with or without moderate renal impairment. Elevated rivaroxaban concentrations were simulated with nirmatrelvir/ritonavir treatment, where the impact was more profound among geriatric subjects with renal impairment. The overexposure of rivaroxaban was restored to normal range on day 4 post‐discontinuation of nirmatrelvir/ritonavir, corroborating with the recovery of enzyme activity. A lower 10 mg daily dose of rivaroxaban could effectively maintain acceptable systemic exposure of rivaroxaban during nirmatrelvir/ritonavir treatment. Treatment of ritonavir marginally declined simulated S‐warfarin concentrations, but substantially elevated that of R‐warfarin, resulting in a decrease in the international normalized ratio (INR). As INR only recovered 2 weeks post‐nirmatrelvir/ritonavir treatment, a longer surveillance INR for warfarin becomes important. Our PBPK‐guided simulations evaluated clinically important yet untested DDIs and supports clinical studies to ensure proper anticoagulation management of patients with COVID‐19 with chronic coagulative abnormalities when initiating nirmatrelvir/ritonavir therapy.
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Affiliation(s)
- Ziteng Wang
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543
| | - Eric Chun Yong Chan
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543
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14
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Development of ritonavir-loaded nanostructured lipid carriers employing quality by design (QbD) as a tool: characterizations, permeability, and bioavailability studies. Drug Deliv Transl Res 2021; 12:1753-1773. [PMID: 34671949 DOI: 10.1007/s13346-021-01083-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/12/2021] [Indexed: 11/27/2022]
Abstract
The objective of the present work was to optimize ritonavir (RTV)-loaded nanostructured lipid carriers (NLCs) to improve bioavailability using a quality by design (QbD)-based technique. Risk assessment was studied using "cause and effect" diagram followed by failure mode effect analysis (FMEA) to identify the effective high-risk variables for the formulation development. Quality target product profile (QTPP) and critical quality attributes (CQAs) were initially assigned for the proposed product. Central composite rotatable design (CCRD) was used to identify the individual and combined interactions of formulation variables. RTV-loaded NLC (RTV-NLC) was prepared using emulsification-ultrasonication method. The effect of formulation variables like ultrasound amplitude, lipid concentration, surfactant concentration on their responses like particle size, polydispersity index (PDI), and entrapment efficiency (EE) were studied by CCRD. The optimized formulation was subjected to lyophilization to obtain dry NLCs for solid-state analysis. DSC and PXRD investigations showed that RTV was molecularly dispersed in lipid matrix indicating amorphous form present in the formulation. FESEM and AFM depicted the spherical and uniform particles. The increase in solubility and dissolution rate is expected to be related to the molecular dispersion, amorphous state, of the drug in the nanoparticle. The optimized NLCs showed good physical stability during storage for 6 months. RTV-NLC was further subjected to in vitro studies and found a successful sustained release rate of 92.37 ± 1.03%. The parallel artificial membrane permeability assay (PAMPA) and everted gut sac model have demonstrated the permeation enhancement of RTV. In vivo study observed the enhanced bioavailability with 2.86-fold suggesting optimized NLC successfully overcome the issue of solubility.
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15
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Chen R, Wang T, Song J, Pu D, He D, Li J, Yang J, Li K, Zhong C, Zhang J. Antiviral Drug Delivery System for Enhanced Bioactivity, Better Metabolism and Pharmacokinetic Characteristics. Int J Nanomedicine 2021; 16:4959-4984. [PMID: 34326637 PMCID: PMC8315226 DOI: 10.2147/ijn.s315705] [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: 04/14/2021] [Accepted: 07/11/2021] [Indexed: 12/11/2022] Open
Abstract
Antiviral drugs (AvDs) are the primary resource in the global battle against viruses, including the recent fight against corona virus disease 2019 (COVID-19). Most AvDs require multiple medications, and their use frequently leads to drug resistance, since they have poor oral bioavailability and low efficacy due to their low solubility/low permeability. Characterizing the in vivo metabolism and pharmacokinetic characteristics of AvDs may help to solve the problems associated with AvDs and enhance their efficacy. In this review of AvDs, we systematically investigated their structure-based metabolic reactions and related enzymes, their cellular pharmacology, and the effects of metabolism on AvD pharmacodynamics and pharmacokinetics. We further assessed how delivery systems achieve better metabolism and pharmacology of AvDs. This review suggests that suitable nanosystems may help to achieve better pharmacological activity and pharmacokinetic behavior of AvDs by altering drug metabolism through the utilization of advanced nanotechnology and appropriate administration routes. Notably, such AvDs as ribavirin, remdesivir, favipiravir, chloroquine, lopinavir and ritonavir have been confirmed to bind to the severe acute respiratory syndrome-like coronavirus (SARS-CoV-2) receptor and thus may represent anti-COVID-19 treatments. Elucidating the metabolic and pharmacokinetic characteristics of AvDs may help pharmacologists to identify new formulations with high bioavailability and efficacy and help physicians to better treat virus-related diseases, including COVID-19.
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Affiliation(s)
- Ran Chen
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Tingting Wang
- Biochemistry and Molecular Biology Laboratory, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Jie Song
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Daojun Pu
- Pharmaceutical Institute, Southwest Pharmaceutical Limited Company, Chongqing, 400038, People's Republic of China
| | - Dan He
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Jianjun Li
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Jie Yang
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Kailing Li
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Cailing Zhong
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Jingqing Zhang
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Chongqing, 400016, People's Republic of China
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16
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Stader F, Battegay M, Marzolini C. Physiologically-Based Pharmacokinetic Modeling to Support the Clinical Management of Drug-Drug Interactions With Bictegravir. Clin Pharmacol Ther 2021; 110:1231-1239. [PMID: 33626178 PMCID: PMC8597021 DOI: 10.1002/cpt.2221] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/27/2021] [Indexed: 12/13/2022]
Abstract
Bictegravir is equally metabolized by cytochrome P450 (CYP)3A and uridine diphosphate‐glucuronosyltransferase (UGT)1A1. Drug–drug interaction (DDI) studies were only conducted for strong inhibitors and inducers, leading to some uncertainty whether moderate perpetrators or multiple drug associations can be safely coadministered with bictegravir. We used physiologically‐based pharmacokinetic (PBPK) modeling to simulate DDI magnitudes of various scenarios to guide the clinical DDI management of bictegravir. Clinically observed DDI data for bictegravir coadministered with voriconazole, darunavir/cobicistat, atazanavir/cobicistat, and rifampicin were predicted within the 95% confidence interval of the PBPK model simulations. The area under the curve (AUC) ratio of the DDI divided by the control scenario was always predicted within 1.25‐fold of the clinically observed data, demonstrating the predictive capability of the used modeling approach. After the successful verification, various DDI scenarios with drug pairs and multiple concomitant drugs were simulated to analyze their effect on bictegravir exposure. Generally, our simulation results suggest that bictegravir should not be coadministered with strong CYP3A and UGT1A1 inhibitors and inducers (e.g., atazanavir, nilotinib, and rifampicin), but based on the present modeling results, bictegravir could be administered with moderate dual perpetrators (e.g., efavirenz). Importantly, the inducing effect of rifampicin on bictegravir was predicted to be reversed with the concomitant administration of a strong inhibitor such as ritonavir, resulting in a DDI magnitude within the efficacy and safety margin for bictegravir (0.5–2.4‐fold). In conclusion, the PBPK modeling strategy can effectively be used to guide the clinical management of DDIs for novel drugs with limited clinical experience, such as bictegravir.
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Affiliation(s)
- Felix Stader
- Department of Medicine and Clinical Research, University Hospital Basel, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Manuel Battegay
- Department of Medicine and Clinical Research, University Hospital Basel, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Catia Marzolini
- Department of Medicine and Clinical Research, University Hospital Basel, Basel, Switzerland.,University of Basel, Basel, Switzerland.,Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
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17
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Das A, Weigle AT, Arnold WR, Kim JS, Carnevale LN, Huff HC. CYP2J2 Molecular Recognition: A New Axis for Therapeutic Design. Pharmacol Ther 2020; 215:107601. [PMID: 32534953 PMCID: PMC7773148 DOI: 10.1016/j.pharmthera.2020.107601] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 05/28/2020] [Indexed: 12/11/2022]
Abstract
Cytochrome P450 (CYP) epoxygenases are a special subset of heme-containing CYP enzymes capable of performing the epoxidation of polyunsaturated fatty acids (PUFA) and the metabolism of xenobiotics. This dual functionality positions epoxygenases along a metabolic crossroad. Therefore, structure-function studies are critical for understanding their role in bioactive oxy-lipid synthesis, drug-PUFA interactions, and for designing therapeutics that directly target the epoxygenases. To better exploit CYP epoxygenases as therapeutic targets, there is a need for improved understanding of epoxygenase structure-function. Of the characterized epoxygenases, human CYP2J2 stands out as a potential target because of its role in cardiovascular physiology. In this review, the early research on the discovery and activity of epoxygenases is contextualized to more recent advances in CYP epoxygenase enzymology with respect to PUFA and drug metabolism. Additionally, this review employs CYP2J2 epoxygenase as a model system to highlight both the seminal works and recent advances in epoxygenase enzymology. Herein we cover CYP2J2's interactions with PUFAs and xenobiotics, its tissue-specific physiological roles in diseased states, and its structural features that enable epoxygenase function. Additionally, the enumeration of research on CYP2J2 identifies the future needs for the molecular characterization of CYP2J2 to enable a new axis of therapeutic design.
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Affiliation(s)
- Aditi Das
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA; Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA; Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA; Center for Biophysics and Computational Biology, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA; Department of Bioengineering, Neuroscience Program, Beckman Institute for Advanced Science and Technology, Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA.
| | - Austin T Weigle
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - William R Arnold
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Justin S Kim
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Lauren N Carnevale
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Hannah C Huff
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
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18
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Thakur A, Tan SPF, Chan JCY. Physiologically-Based Pharmacokinetic Modeling to Predict the Clinical Efficacy of the Coadministration of Lopinavir and Ritonavir against SARS-CoV-2. Clin Pharmacol Ther 2020; 108:1176-1184. [PMID: 32767755 PMCID: PMC7436510 DOI: 10.1002/cpt.2014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/28/2020] [Indexed: 12/26/2022]
Abstract
Lopinavir/ritonavir, originally developed for treating HIV, is currently undergoing clinical studies for treating the severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2). Although recent reports suggest that lopinavir exhibits in vitro efficacy against SARS‐CoV‐2, it is a highly protein‐bound drug and it remains unknown if it reaches adequate in vivo unbound (free) concentrations in lung tissue. We built a physiologically‐based pharmacokinetic model of lopinavir/ritonavir in white and Chinese populations. Our aim was to perform pharmacokinetic/pharmacodynamic correlations by comparing simulated free plasma and lung concentration values achieved using different dosing regimens of lopinavir/ritonavir with unbound half‐maximal effective concentration (EC50,unbound) and unbound effective concentration 90% values of lopinavir against SARS‐CoV‐2. The model was validated against multiple observed clinical datasets for single and repeated dosing of lopinavir/ritonavir. Predicted pharmacokinetic parameters, such as the maximum plasma concentration, area under the plasma concentration‐time profile, oral clearance, half‐life, and minimum plasma concentration at steady‐state were within two‐fold of clinical values for both populations. Using the current lopinavir/ritonavir regimen of 400/100 mg twice daily, lopinavir does not achieve sufficient free lung concentrations for efficacy against SARS‐CoV‐2. Although the Chinese population reaches greater plasma and lung concentrations as compared with whites, our simulations suggest that a significant dose increase from the current clinically used dosing regimen is necessary to reach the EC50,unbound value for both populations. Based on safety data, higher doses would likely lead to QT prolongation and gastrointestinal disorders (nausea, vomiting, and diarrhea), thus, any dose adjustment must be carefully weighed alongside these safety concerns.
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Affiliation(s)
- Aarzoo Thakur
- Innovations in Food and Chemical Safety, Agency for Science, Technology, and Research, Singapore City, Singapore.,Skin Research Institute of Singapore, Agency for Science, Technology, and Research, Singapore City, Singapore
| | - Shawn Pei Feng Tan
- Innovations in Food and Chemical Safety, Agency for Science, Technology, and Research, Singapore City, Singapore.,Skin Research Institute of Singapore, Agency for Science, Technology, and Research, Singapore City, Singapore
| | - James Chun Yip Chan
- Innovations in Food and Chemical Safety, Agency for Science, Technology, and Research, Singapore City, Singapore.,Skin Research Institute of Singapore, Agency for Science, Technology, and Research, Singapore City, Singapore.,Singapore Institute of Food and Biotechnology Innovation, Agency for Science, Technology, and Research, Singapore City, Singapore
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19
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Nakagawa J, Kinjo T, Iizuka M, Ueno K, Tomita H, Niioka T. Impact of gene polymorphisms in drug-metabolizing enzymes and transporters on trough concentrations of rivaroxaban in patients with atrial fibrillation. Basic Clin Pharmacol Toxicol 2020; 128:297-304. [PMID: 32920985 DOI: 10.1111/bcpt.13488] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/30/2020] [Accepted: 09/04/2020] [Indexed: 11/28/2022]
Abstract
Rivaroxaban is excreted from the body via multiple pathways involving glomerular filtration, drug-metabolizing enzymes and transporters. In this study, we aimed to examine the impact of single nucleotide polymorphisms in P-glycoprotein, breast cancer resistance protein, cytochrome P450 (CYP) 3A5 and CYP2J2 on the pharmacokinetics of rivaroxaban. Eighty-six patients with non-valvular atrial fibrillation (NVAF) undergoing AF catheter ablation were enrolled in this study. In these analyses, the dose-adjusted plasma trough concentration ratio (C0h /D) of rivaroxaban was used as the pharmacokinetic index. The median (quartile range) rivaroxaban C0h /D was 3.39 (2.08-5.21) ng/mL/mg (coefficient of variation: 80.5%). The C0h /D did not differ significantly among ABCB1 c.3435C>T, c.2677G>A/T, c.1236C>T, ABCG2 c.421C>A, CYP3A5*3 and CYP2J2*7 genotypes. Stepwise selection multiple linear regression analysis showed that the estimated glomerular filtration rate was the only independent factor influencing the C0h /D of rivaroxaban (R2 = 0.152, P < 0.001). There was a significant correlation between the C0h of rivaroxaban and prothrombin time (PT) (rho = 0.357, P = 0.001). In patients with NVAF, pharmacokinetic genotype tests are unlikely to be useful for prediction of the C0h of rivaroxaban.
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Affiliation(s)
- Junichi Nakagawa
- Department of Pharmacy, Hirosaki University Hospital, Aomori, Japan
| | - Takahiko Kinjo
- Department of Cardiology, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - Mei Iizuka
- Department of Pharmacy, Hirosaki University Hospital, Aomori, Japan
| | - Kayo Ueno
- Department of Pharmacy, Hirosaki University Hospital, Aomori, Japan
| | - Hirofumi Tomita
- Department of Cardiology, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - Takenori Niioka
- Department of Pharmacy, Hirosaki University Hospital, Aomori, Japan.,Department of Pharmaceutical Science, Hirosaki University Graduate School of Medicine, Aomori, Japan
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20
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Ikemura N, Yamaori S, Kobayashi C, Kamijo S, Murayama N, Yamazaki H, Ohmori S. Inhibitory effects of antihypertensive drugs on human cytochrome P450 2J2 activity: Potent inhibition by azelnidipine and manidipine. Chem Biol Interact 2019; 306:1-9. [DOI: 10.1016/j.cbi.2019.04.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 03/25/2019] [Accepted: 04/02/2019] [Indexed: 12/24/2022]
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21
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Lafite P, André F, Graves JP, Zeldin DC, Dansette PM, Mansuy D. Role of Arginine 117 in Substrate Recognition by Human Cytochrome P450 2J2. Int J Mol Sci 2018; 19:ijms19072066. [PMID: 30012976 PMCID: PMC6073854 DOI: 10.3390/ijms19072066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/06/2018] [Accepted: 07/13/2018] [Indexed: 01/10/2023] Open
Abstract
The influence of Arginine 117 of human cytochrome P450 2J2 in the recognition of ebastine and a series of terfenadone derivatives was studied by site-directed mutagenesis. R117K, R117E, and R117L mutants were produced, and the behavior of these mutants in the hydroxylation of ebastine and terfenadone derivatives was compared to that of wild-type CYP2J2. The data clearly showed the importance of the formation of a hydrogen bond between R117 and the keto group of these substrates. The data were interpreted on the basis of 3D homology models of the mutants and of dynamic docking of the substrates in their active site. These modeling studies also suggested the existence of a R117-E222 salt bridge between helices B’ and F that would be important for maintaining the overall folding of CYP2J2.
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Affiliation(s)
- Pierre Lafite
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR8601, Université Paris Descartes, 75270 Paris CEDEX 06, France.
| | - François André
- Institute for Integrative Biology of the Cell (I2BC), DRF/Joliot/SB2SM, CEA, CNRS, Université Paris-Saclay, F-91198 Gif-sur-Yvette CEDEX, France.
| | - Joan P Graves
- Division of Intramural Research, National Institute of Environmental Health Sciences, Research Triangle Park, Durham, NC 27709, USA.
| | - Darryl C Zeldin
- Division of Intramural Research, National Institute of Environmental Health Sciences, Research Triangle Park, Durham, NC 27709, USA.
| | - Patrick M Dansette
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR8601, Université Paris Descartes, 75270 Paris CEDEX 06, France.
| | - Daniel Mansuy
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR8601, Université Paris Descartes, 75270 Paris CEDEX 06, France.
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22
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Aliwarga T, Evangelista EA, Sotoodehnia N, Lemaitre RN, Totah RA. Regulation of CYP2J2 and EET Levels in Cardiac Disease and Diabetes. Int J Mol Sci 2018; 19:E1916. [PMID: 29966295 PMCID: PMC6073148 DOI: 10.3390/ijms19071916] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 06/24/2018] [Accepted: 06/25/2018] [Indexed: 12/13/2022] Open
Abstract
Cytochrome P450 2J2 (CYP2J2) is a known arachidonic acid (AA) epoxygenase that mediates the formation of four bioactive regioisomers of cis-epoxyeicosatrienoic acids (EETs). Although its expression in the liver is low, CYP2J2 is mainly observed in extrahepatic tissues, including the small intestine, pancreas, lung, and heart. Changes in CYP2J2 levels or activity by xenobiotics, disease states, or polymorphisms are proposed to lead to various organ dysfunctions. Several studies have investigated the regulation of CYP2J2 and EET formation in various cell lines and have demonstrated that such regulation is tissue-dependent. In addition, studies linking CYP2J2 polymorphisms to the risk of developing cardiovascular disease (CVD) yielded contradictory results. This review will focus on the mechanisms of regulation of CYP2J2 by inducers, inhibitors, and oxidative stress modeling certain disease states in various cell lines and tissues. The implication of CYP2J2 expression, polymorphisms, activity and, as a result, EET levels in the pathophysiology of diabetes and CVD will also be discussed.
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Affiliation(s)
- Theresa Aliwarga
- Department of Medicinal Chemistry, University of Washington, Seattle, WA 98101, USA.
| | - Eric A Evangelista
- Department of Medicinal Chemistry, University of Washington, Seattle, WA 98101, USA.
| | - Nona Sotoodehnia
- Cardiovascular Health Research Unit, University of Washington, Seattle, WA 98195, USA.
- Department of Medicine, University of Washington, Seattle, WA 98195, USA.
- Division of Cardiology, University of Washington, Seattle, WA 98195, USA.
| | - Rozenn N Lemaitre
- Cardiovascular Health Research Unit, University of Washington, Seattle, WA 98195, USA.
| | - Rheem A Totah
- Department of Medicinal Chemistry, University of Washington, Seattle, WA 98101, USA.
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Solanki M, Pointon A, Jones B, Herbert K. Cytochrome P450 2J2: Potential Role in Drug Metabolism and Cardiotoxicity. Drug Metab Dispos 2018; 46:1053-1065. [DOI: 10.1124/dmd.117.078964] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 04/19/2018] [Indexed: 12/11/2022] Open
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Arnold WR, Weigle AT, Das A. Cross-talk of cannabinoid and endocannabinoid metabolism is mediated via human cardiac CYP2J2. J Inorg Biochem 2018; 184:88-99. [PMID: 29689453 DOI: 10.1016/j.jinorgbio.2018.03.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/28/2018] [Accepted: 03/23/2018] [Indexed: 01/07/2023]
Abstract
Phytocannabinoids have well-known cardiovascular implications. For instance, Δ9-tetrahydrocannabinol (Δ9-THC), the principal component of cannabis, induces tachycardia in humans. In order to understand the impact of phytocannabinoids on human cardiovascular health, there is a need to study the metabolism of phytocannabinoids by cardiac cytochromes p450 (CYPs). CYP2J2, the primary CYP of cardiomyocytes, is responsible for the metabolism of the endocannabinoid, anandamide (AEA), into cardioprotective epoxides (EET-EAs). Herein, we have investigated the kinetics of the direct metabolism of six phytocannabinoids (Δ9-THC, Δ8-tetrahydrocannabinol, cannabinol, cannabidiol, cannabigerol, and cannabichromene) by CYP2J2. CYP2J2 mainly produces 1'/1″-OH metabolites of these phytocannabinoids. These phytocannabinoids are metabolized with greater catalytic efficiency compared to the metabolism of AEA by CYP2J2. We have also determined that the phytocannabinoids are potent inhibitors of CYP2J2-mediated AEA metabolism, with Δ9-THC being the strongest inhibitor. Most of the inhibition of CYP2J2 by the phytocannabinoids follow a noncompetitive inhibition model, and therefore dramatically reduce the formation of EET-EAs by CYP2J2. Taken together, these data demonstrate that phytocannabinoids are directly metabolized by CYP2J2 and inhibit human cardiac CYP2J2, leading to a reduction in the formation of cardioprotective EET-EAs.
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Affiliation(s)
- William R Arnold
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, United States
| | - Austin T Weigle
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, United States
| | - Aditi Das
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, United States; Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, United States; Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL 61801, United States; Department of Bioengineering, Neuroscience Program, University of Illinois Urbana-Champaign, Urbana, IL 61801, United States.
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25
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McMillan JM, Cobb DA, Lin Z, Banoub MG, Dagur RS, Branch Woods AA, Wang W, Makarov E, Kocher T, Joshi PS, Quadros RM, Harms DW, Cohen SM, Gendelman HE, Gurumurthy CB, Gorantla S, Poluektova LY. Antiretroviral Drug Metabolism in Humanized PXR-CAR-CYP3A-NOG Mice. J Pharmacol Exp Ther 2018; 365:272-280. [PMID: 29476044 PMCID: PMC5878674 DOI: 10.1124/jpet.117.247288] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 02/22/2018] [Indexed: 12/16/2022] Open
Abstract
Antiretroviral drug (ARV) metabolism is linked largely to hepatic cytochrome P450 activity. One ARV drug class known to be metabolized by intestinal and hepatic CYP3A are the protease inhibitors (PIs). Plasma drug concentrations are boosted by CYP3A inhibitors such as cobisistat and ritonavir (RTV). Studies of such drug-drug interactions are limited since the enzyme pathways are human specific. While immune-deficient mice reconstituted with human cells are an excellent model to study ARVs during human immunodeficiency virus type 1 (HIV-1) infection, they cannot reflect human drug metabolism. Thus, we created a mouse strain with the human pregnane X receptor, constitutive androstane receptor, and CYP3A4/7 genes on a NOD.Cg-Prkdcscid Il2rgtm1Sug/JicTac background (hCYP3A-NOG) and used them to evaluate the impact of human CYP3A metabolism on ARV pharmacokinetics. In proof-of-concept studies we used nanoformulated atazanavir (nanoATV) with or without RTV. NOG and hCYP3A-NOG mice were treated weekly with 50 mg/kg nanoATV alone or boosted with nanoformulated ritonavir (nanoATV/r). Plasma was collected weekly and liver was collected at 28 days post-treatment. Plasma and liver atazanavir (ATV) concentrations in nanoATV/r-treated hCYP3A-NOG mice were 2- to 4-fold higher than in replicate NOG mice. RTV enhanced plasma and liver ATV concentrations 3-fold in hCYP3A-NOG mice and 1.7-fold in NOG mice. The results indicate that human CYP3A-mediated drug metabolism is reduced compared with mouse and that RTV differentially affects human gene activity. These differences can affect responses to PIs in humanized mouse models of HIV-1 infection. Importantly, hCYP3A-NOG mice reconstituted with human immune cells can be used for bench-to-bedside translation.
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Affiliation(s)
- JoEllyn M McMillan
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Denise A Cobb
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Zhiyi Lin
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Mary G Banoub
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Raghubendra S Dagur
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Amanda A Branch Woods
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Weimin Wang
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Edward Makarov
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Ted Kocher
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Poonam S Joshi
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Rolen M Quadros
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Donald W Harms
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Samuel M Cohen
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Howard E Gendelman
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Channabasavaiah B Gurumurthy
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Santhi Gorantla
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
| | - Larisa Y Poluektova
- Department of Pharmacology and Experimental Neuroscience (J.M.M., D.A.C., M.G.B., R.S.D., A.A.B.W., W.W., E.M., T.K., P.S.J., H.E.G., S.G., L.Y.P.), Developmental Neuroscience, Munroe Meyer Institute for Genetics and Rehabilitation (C.B.G.), Department of Pharmaceutical Sciences (Z.L.), Mouse Genome Engineering Core Facility, Vice Chancellor for Research Office (R.M.Q., D.W.H., C.B.G.), and Department of Pathology and Microbiology (S.M.C.), University of Nebraska Medical Center, Omaha, Nebraska
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26
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Arnold WR, Baylon JL, Tajkhorshid E, Das A. Arachidonic Acid Metabolism by Human Cardiovascular CYP2J2 Is Modulated by Doxorubicin. Biochemistry 2017; 56:6700-6712. [PMID: 29200270 DOI: 10.1021/acs.biochem.7b01025] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Doxorubicin (DOX) is a chemotherapeutic that is used in the treatment of a wide variety of cancers. However, it causes cardiotoxicity partly because of the formation of reactive oxygen species. CYP2J2 is a human cytochrome P450 that is strongly expressed in cardiomyocytes. It converts arachidonic acid (AA) into four different regioisomers of epoxyeicosatrienoic acids (EETs). Using kinetic analyses, we show that AA metabolism by CYP2J2 is modulated by DOX. We show that cytochrome P450 reductase, the redox partner of CYP2J2, metabolizes DOX to 7-deoxydoxorubicin aglycone (7-de-aDOX). This metabolite then binds to CYP2J2 and inhibits and alters the preferred site of metabolism of AA, leading to a change in the ratio of the EET regioisomers. Furthermore, molecular dynamics simulations indicate that 7-de-aDOX and AA can concurrently bind to the CYP2J2 active site to produce these changes in the site of AA metabolism. To determine if these observations are unique to DOX/7-de-aDOX, we use noncardiotoxic DOX analogues, zorubicin (ZRN) and 5-iminodaunorubicin (5-IDN). ZRN and 5-IDN inhibit CYP2J2-mediated AA metabolism but do not change the ratio of EET regioisomers. Altogether, we demonstrate that DOX and 7-de-aDOX inhibit CYP2J2-mediated AA metabolism and 7-de-aDOX binds close to the active site to alter the ratio of cardioprotective EETs. These mechanistic studies of CYP2J2 can aid in the design of new alternative DOX derivatives.
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Affiliation(s)
- William R Arnold
- Department of Comparative Biosciences, ‡Department of Biochemistry, §Center for Biophysics and Computational Biology, ∥Beckman Institute for Advanced Science and Technology, and ⊥Department of Bioengineering, Neuroscience Program, University of Illinois Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Javier L Baylon
- Department of Comparative Biosciences, ‡Department of Biochemistry, §Center for Biophysics and Computational Biology, ∥Beckman Institute for Advanced Science and Technology, and ⊥Department of Bioengineering, Neuroscience Program, University of Illinois Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Emad Tajkhorshid
- Department of Comparative Biosciences, ‡Department of Biochemistry, §Center for Biophysics and Computational Biology, ∥Beckman Institute for Advanced Science and Technology, and ⊥Department of Bioengineering, Neuroscience Program, University of Illinois Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Aditi Das
- Department of Comparative Biosciences, ‡Department of Biochemistry, §Center for Biophysics and Computational Biology, ∥Beckman Institute for Advanced Science and Technology, and ⊥Department of Bioengineering, Neuroscience Program, University of Illinois Urbana-Champaign , Urbana, Illinois 61801, United States
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27
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Olafuyi O, Coleman M, Badhan RK. The application of physiologically based pharmacokinetic modelling to assess the impact of antiretroviral-mediated drug-drug interactions on piperaquine antimalarial therapy during pregnancy. Biopharm Drug Dispos 2017; 38:464-478. [DOI: 10.1002/bdd.2087] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/22/2017] [Accepted: 07/06/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Olusola Olafuyi
- Aston Healthy Research Group, Aston Pharmacy School; Aston University; Birmingham B4 7ET UK
| | - Michael Coleman
- Aston Pharmacy School; Aston University; Birmingham B4 7ET UK
| | - Raj K.S. Badhan
- Aston Healthy Research Group, Aston Pharmacy School; Aston University; Birmingham B4 7ET UK
- Aston Pharmacy School; Aston University; Birmingham B4 7ET UK
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28
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Inhibition and inactivation of human CYP2J2: Implications in cardiac pathophysiology and opportunities in cancer therapy. Biochem Pharmacol 2017; 135:12-21. [PMID: 28237650 DOI: 10.1016/j.bcp.2017.02.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 02/21/2017] [Indexed: 12/15/2022]
Abstract
Extrahepatic cytochrome P450 enzymes (CYP450) are pivotal in the metabolism of endogenous substrates and xenobiotics. CYP2J2 is a major cardiac CYP450 and primarily metabolizes polyunsaturated fatty acids such as arachidonic acid to cardioactive epoxyeicosatrienoic acids. Due to its role in endobiotic metabolism, CYP2J2 has been actively studied in recent years with the focus on its biological functions in cardiac pathophysiology. Additionally, CYP2J2 metabolizes a number of xenobiotics such as astemizole and terfenadine and is potently inhibited by danazol and telmisartan. Notably, CYP2J2 is found to be upregulated in multiple cancers. Hence a number of specific CYP2J2 inhibitors have been developed and their efficacy in inhibiting tumor progression has been actively studied. CYP2J2 inhibitor such as C26 (1-[4-(vinyl)phenyl]-4-[4-(diphenyl-hydroxymethyl)-piperidinyl]-butanone hydrochloride) caused marked reduction in tumor proliferation and migration as well as promoted apoptosis in cancer cells. In this review, we discuss the role of CYP2J2 in cardiac pathophysiology and cancer therapeutics. Additionally, we provide an update on the substrates, reversible inhibitors and irreversible inhibitors of CYP2J2. Finally, we discuss the current gaps and future directions in CYP2J2 research.
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29
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Colbers A, Greupink R, Litjens C, Burger D, Russel FGM. Physiologically Based Modelling of Darunavir/Ritonavir Pharmacokinetics During Pregnancy. Clin Pharmacokinet 2016; 55:381-96. [PMID: 26369773 PMCID: PMC4761019 DOI: 10.1007/s40262-015-0325-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Pregnant women are usually excluded from clinical trials. Physiologically based pharmacokinetic (PBPK) modelling may provide a method to predict pharmacokinetics in pregnant women, without the need to perform extensive in vivo clinical trials. Here, we used mechanistic modelling to delineate the potential impact of drug transporters on darunavir pharmacokinetics and to identify current knowledge gaps that limit accurate PBPK modelling of darunavir/ritonavir (darunavir/r) exposure in pregnancy. Simcyp (version 13.2) was used for PBPK modelling, using physicochemical and in vitro pharmacokinetic parameters of darunavir and ritonavir from the literature. The Michaelis-Menten constant (K m) and the maximum rate of metabolite formation (V max) for cytochrome P450 3A4-mediated darunavir biotransformation and inhibition by ritonavir were determined experimentally, while the contributions of hepatocyte influx and efflux transporters were assessed by sensitivity analysis. The simulations were compared with previously published clinical pharmacokinetic data. We found that use of a well-stirred liver model overestimated darunavir exposure substantially. A permeability-limited liver model, including hepatic uptake and efflux transporters and an efficient enterohepatic circulation step, resulted in an acceptable description of darunavir/r exposure. For the 600/100 mg darunavir/r twice-daily dose and the 800/100 mg once-daily dose, the estimated pharmacokinetic parameters were within a 2-fold range of the reported data. The predicted decreases in the area under the concentration-time curve (AUC) values during pregnancy for the twice- and once-daily doses were 27 and 41%, respectively, which were in line with the observed decreases of 17-22 and 33%. In conclusion, our data support a clinically relevant role of hepatic transporters in darunavir pharmacokinetics. By including them in our model, we successfully approximated the increase in darunavir exposure mediated by ritonavir co-administration and the decrease in darunavir exposure observed during pregnancy.
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Affiliation(s)
- Angela Colbers
- Department of Pharmacy, Radboud University Medical Centre, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
| | - Rick Greupink
- Department of Pharmacology and Toxicology (149), Radboud University Medical Centre, Radboud Institute for Molecular Life Sciences, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
| | - Carlijn Litjens
- Department of Pharmacy, Radboud University Medical Centre, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
- Department of Pharmacology and Toxicology (149), Radboud University Medical Centre, Radboud Institute for Molecular Life Sciences, PO Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - David Burger
- Department of Pharmacy, Radboud University Medical Centre, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
| | - Frans G M Russel
- Department of Pharmacology and Toxicology (149), Radboud University Medical Centre, Radboud Institute for Molecular Life Sciences, PO Box 9101, 6500 HB, Nijmegen, The Netherlands
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30
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Dinh JC, Pearce RE, Van Haandel L, Gaedigk A, Leeder JS. Characterization of Atomoxetine Biotransformation and Implications for Development of PBPK Models for Dose Individualization in Children. Drug Metab Dispos 2016; 44:1070-9. [PMID: 27052878 PMCID: PMC4931890 DOI: 10.1124/dmd.116.069518] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/04/2016] [Indexed: 11/22/2022] Open
Abstract
Atomoxetine (ATX) is a second-line nonstimulant medication used to control symptoms of attention deficit hyperactivity disorder (ADHD). Inconsistent therapeutic efficacy has been reported with ATX, which may be related to variable CYP2D6-mediated drug clearance. We characterized ATX metabolism in a panel of human liver samples as a basis for a bottom-up PBPK model to aid in ATX exposure prediction and control. Km, Vmax, and Clint values in pooled human liver microsomes (HLMs) were 2.4 µM, 479 pmol/min/mg protein, and 202 µl/min/mg protein, respectively. Mean population values of kinetic parameters are not adequate to describe variability in a population, given that Km, Vmax, and Clint values from single-donor HLMs ranged from 0.93 to 79.2 µM, 20.0 to 1600 pmol/min/mg protein, and 0.3 to 936 µl/min/mg protein. All kinetic parameters were calculated from 4-hydroxyatomoxetine (4-OH-ATX) formation. CYP2E1 and CYP3A contributed to 4-OH-ATX formation in livers with CYP2D6 intermediate and poor metabolizer status. In HLMs with lower CYP2D6 activity levels, 2-hydroxymethylatomoxetine (2-CH2OH-ATX) formation became a more predominant pathway of metabolism, which appeared to be catalyzed by CYP2B6. ATX biotransformation at clinically relevant plasma concentrations was characterized in a panel of pediatric HLM (n = 116) samples by evaluating primary metabolites. Competing pathways of ATX metabolism [N-desmethylatomoxetine (NDM-ATX) and 2-CH2OH-ATX formation] had increasing importance in livers with lesser CYP2D6 activity, but, overall ATX clearance was still compromised. Modeling ATX exposure to individualize therapy would require comprehensive knowledge of factors that affect CYP2D6 activity as well as an understanding of competing pathways, particularly for individuals with lower CYP2D6 activity.
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Affiliation(s)
- Jean C Dinh
- Division of Clinical Pharmacology, Toxicology, and Therapeutic Innovation (J.C.D., L.V.H., R.E.P., A.G., J.S.L.), Department of Pediatrics, Children's Mercy Hospital (L.V.H., R.E.P., A.G., J.S.L.), University of Kansas Medical Center (J.S.L.), and Department of Pharmacology (A.G., R.E.P., J.S.L.), University of Missouri-Kansas City, Kansas City, Missouri
| | - Robin E Pearce
- Division of Clinical Pharmacology, Toxicology, and Therapeutic Innovation (J.C.D., L.V.H., R.E.P., A.G., J.S.L.), Department of Pediatrics, Children's Mercy Hospital (L.V.H., R.E.P., A.G., J.S.L.), University of Kansas Medical Center (J.S.L.), and Department of Pharmacology (A.G., R.E.P., J.S.L.), University of Missouri-Kansas City, Kansas City, Missouri
| | - Leon Van Haandel
- Division of Clinical Pharmacology, Toxicology, and Therapeutic Innovation (J.C.D., L.V.H., R.E.P., A.G., J.S.L.), Department of Pediatrics, Children's Mercy Hospital (L.V.H., R.E.P., A.G., J.S.L.), University of Kansas Medical Center (J.S.L.), and Department of Pharmacology (A.G., R.E.P., J.S.L.), University of Missouri-Kansas City, Kansas City, Missouri
| | - Andrea Gaedigk
- Division of Clinical Pharmacology, Toxicology, and Therapeutic Innovation (J.C.D., L.V.H., R.E.P., A.G., J.S.L.), Department of Pediatrics, Children's Mercy Hospital (L.V.H., R.E.P., A.G., J.S.L.), University of Kansas Medical Center (J.S.L.), and Department of Pharmacology (A.G., R.E.P., J.S.L.), University of Missouri-Kansas City, Kansas City, Missouri
| | - J Steven Leeder
- Division of Clinical Pharmacology, Toxicology, and Therapeutic Innovation (J.C.D., L.V.H., R.E.P., A.G., J.S.L.), Department of Pediatrics, Children's Mercy Hospital (L.V.H., R.E.P., A.G., J.S.L.), University of Kansas Medical Center (J.S.L.), and Department of Pharmacology (A.G., R.E.P., J.S.L.), University of Missouri-Kansas City, Kansas City, Missouri
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Multiple modes of inhibition of human cytochrome P450 2J2 by dronedarone, amiodarone and their active metabolites. Biochem Pharmacol 2016; 107:67-80. [DOI: 10.1016/j.bcp.2016.03.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 03/09/2016] [Indexed: 12/31/2022]
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Walker VJ, Griffin AP, Hammar DK, Hollenberg PF. Metabolism of Anandamide by Human Cytochrome P450 2J2 in the Reconstituted System and Human Intestinal Microsomes. J Pharmacol Exp Ther 2016; 357:537-44. [PMID: 27000802 DOI: 10.1124/jpet.116.232553] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 03/18/2016] [Indexed: 12/14/2022] Open
Abstract
According to the Centers for Disease Control and Prevention, the incidence of inflammatory bowel diseases (IBD) is about 1 in 250 people in the United States. The disease is characterized by chronic or recurring inflammation of the gut. Because of the localization of the endocannabinoid system in the gastrointestinal tract, it may be a potential pharmacologic target for the treatment of IBD and other diseases. Fatty acid amide hydrolase (FAAH) is a potential candidate because it is upregulated in IBD. FAAH hydrolyzes and, as a consequence, inactivates anandamide (AEA), a prominent endocannabinoid. Inhibition of FAAH would lead to increases in the amount of AEA oxidized by cytochrome P450s (P450s). CYP2J2, the major P450 epoxygenase expressed in the heart, is also expressed in the intestine and has previously been reported to oxidize AEA. We have investigated the possibility that it may play a role in AEA metabolism in the gut and have demonstrated that purified human CYP2J2 metabolizes AEA to form the 20-hydroxyeicosatetraenoic acid ethanolamide (HETE-EA) and several epoxygenated products, including the 5,6-, 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EET-EAs), in the reconstituted system. Kinetic studies suggest that the KM values for these products range from approximately 10 to 468 μM and the kcat values from 0.2 to 23.3 pmol/min per picomole of P450. Human intestinal microsomes, which express CYP2J2, metabolize AEA to give the 5,6-, 8,9-, and 11,12-EET-EAs, as well as 20-HETE-EA. Studies using specific P450 inhibitors suggest that although CYP2J2 metabolizes AEA, it is not the primary P450 responsible for AEA metabolism in human intestines.
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Affiliation(s)
- Vyvyca J Walker
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan
| | - Alisha P Griffin
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan
| | - Dagan K Hammar
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan
| | - Paul F Hollenberg
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan
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Local bacteria affect the efficacy of chemotherapeutic drugs. Sci Rep 2015; 5:14554. [PMID: 26416623 PMCID: PMC4586607 DOI: 10.1038/srep14554] [Citation(s) in RCA: 180] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 08/18/2015] [Indexed: 12/30/2022] Open
Abstract
In this study, the potential effects of bacteria on the efficacy of frequently used chemotherapies was examined. Bacteria and cancer cell lines were examined in vitro and in vivo for changes in the efficacy of cancer cell killing mediated by chemotherapeutic agents. Of 30 drugs examined in vitro, the efficacy of 10 was found to be significantly inhibited by certain bacteria, while the same bacteria improved the efficacy of six others. HPLC and mass spectrometry analyses of sample drugs (gemcitabine, fludarabine, cladribine, CB1954) demonstrated modification of drug chemical structure. The chemoresistance or increased cytotoxicity observed in vitro with sample drugs (gemcitabine and CB1954) was replicated in in vivo murine subcutaneous tumour models. These findings suggest that bacterial presence in the body due to systemic or local infection may influence tumour responses or off-target toxicity during chemotherapy.
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Sager JE, Yu J, Ragueneau-Majlessi I, Isoherranen N. Physiologically Based Pharmacokinetic (PBPK) Modeling and Simulation Approaches: A Systematic Review of Published Models, Applications, and Model Verification. Drug Metab Dispos 2015; 43:1823-37. [PMID: 26296709 DOI: 10.1124/dmd.115.065920] [Citation(s) in RCA: 314] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 08/20/2015] [Indexed: 12/16/2022] Open
Abstract
Modeling and simulation of drug disposition has emerged as an important tool in drug development, clinical study design and regulatory review, and the number of physiologically based pharmacokinetic (PBPK) modeling related publications and regulatory submissions have risen dramatically in recent years. However, the extent of use of PBPK modeling by researchers, and the public availability of models has not been systematically evaluated. This review evaluates PBPK-related publications to 1) identify the common applications of PBPK modeling; 2) determine ways in which models are developed; 3) establish how model quality is assessed; and 4) provide a list of publically available PBPK models for sensitive P450 and transporter substrates as well as selective inhibitors and inducers. PubMed searches were conducted using the terms "PBPK" and "physiologically based pharmacokinetic model" to collect published models. Only papers on PBPK modeling of pharmaceutical agents in humans published in English between 2008 and May 2015 were reviewed. A total of 366 PBPK-related articles met the search criteria, with the number of articles published per year rising steadily. Published models were most commonly used for drug-drug interaction predictions (28%), followed by interindividual variability and general clinical pharmacokinetic predictions (23%), formulation or absorption modeling (12%), and predicting age-related changes in pharmacokinetics and disposition (10%). In total, 106 models of sensitive substrates, inhibitors, and inducers were identified. An in-depth analysis of the model development and verification revealed a lack of consistency in model development and quality assessment practices, demonstrating a need for development of best-practice guidelines.
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Affiliation(s)
- Jennifer E Sager
- Department of Pharmaceutics, School of Pharmacy, University of Washington, Seattle, Washington
| | - Jingjing Yu
- Department of Pharmaceutics, School of Pharmacy, University of Washington, Seattle, Washington
| | | | - Nina Isoherranen
- Department of Pharmaceutics, School of Pharmacy, University of Washington, Seattle, Washington
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Lee E, Wu Z, Shon JC, Liu KH. Danazol Inhibits Cytochrome P450 2J2 Activity in a Substrate-independent Manner. Drug Metab Dispos 2015; 43:1250-3. [DOI: 10.1124/dmd.115.064345] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 06/05/2015] [Indexed: 11/22/2022] Open
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