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Gabor-Worwa E, Kowal-Chwast A, Gaud N, Gogola D, Littlewood P, Smoluch M, Brzózka K, Kus K. Uridine 5'-Diphospho-glucuronosyltransferase 1A3 (UGT1A3) Prediction of Hepatic Clearance of Organic Anion Transporting Polypeptide 1B3 (OATP1B3) Substrate Telmisartan by Glucuronidation Using In Vitro-In Vivo Extrapolation (IVIVE). Eur J Drug Metab Pharmacokinet 2024; 49:393-403. [PMID: 38642299 DOI: 10.1007/s13318-024-00895-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/27/2024] [Indexed: 04/22/2024]
Abstract
BACKGROUND AND OBJECTIVE The prediction of pharmacokinetic parameters for drugs metabolised by cytochrome P450 enzymes has been the subject of active research for many years, while the application of in vitro-in vivo extrapolation (IVIVE) techniques for non-cytochrome P450 enzymes has not been thoroughly evaluated. There is still no established quantitative method for predicting hepatic clearance of drugs metabolised by uridine 5'-diphospho-glucuronosyltransferases (UGTs), not to mention those which undergo hepatic uptake. The objective of the study was to predict the human hepatic clearance for telmisartan based on in vitro metabolic stability and hepatic uptake results. METHODS Telmisartan was examined in liver systems, allowing to estimate intrinsic clearance (CLint, in vitro) based on the substrate disappearance rate with the use of liquid chromatography tandem mass spectrometry (LC-MS/MS) technique. Obtained CLint, in vitro values were corrected for corresponding unbound fractions. Prediction of human hepatic clearance was made from scaled unbound CLint, in vitro data with the use of the well-stirred model, and finally referenced to the literature value of observed clearance in humans, allowing determination of the essential scaling factors. RESULTS The in vitro scaled CLint, in vitro by UGT1A3 was assessed using three systems, human hepatocytes, liver microsomes, and recombinant enzymes. Obtained values were scaled and hepatic metabolism clearance was predicted, resulting in significant clearance underprediction. Utilization of the extended clearance concept (ECC) and hepatic uptake improved prediction of hepatic metabolism clearance. The scaling factors for hepatocytes, assessing the in vitro-in vivo difference, changed from sixfold difference to only twofold difference with the application of the ECC. CONCLUSIONS The study showed that taking into consideration hepatic uptake of a drug allows us to obtain satisfactory scaling factors, hence enabling the prediction of in vivo hepatic glucuronidation from in vitro data.
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Affiliation(s)
- Ewelina Gabor-Worwa
- Department of Drug Metabolism and Pharmacokinetics, Ryvu Therapeutics S.A., Sternbacha 2 Street, 30-394, Krakow, Poland.
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Krakow, Mickiewicza 30 Street, 30-059, Krakow, Poland.
| | - Anna Kowal-Chwast
- Department of Drug Metabolism and Pharmacokinetics, Ryvu Therapeutics S.A., Sternbacha 2 Street, 30-394, Krakow, Poland
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Krakow, Mickiewicza 30 Street, 30-059, Krakow, Poland
| | - Nilesh Gaud
- Department of Drug Metabolism and Pharmacokinetics, Ryvu Therapeutics S.A., Sternbacha 2 Street, 30-394, Krakow, Poland
| | - Dawid Gogola
- Department of Drug Metabolism and Pharmacokinetics, Ryvu Therapeutics S.A., Sternbacha 2 Street, 30-394, Krakow, Poland
| | - Peter Littlewood
- Department of Drug Metabolism and Pharmacokinetics, Ryvu Therapeutics S.A., Sternbacha 2 Street, 30-394, Krakow, Poland
| | - Marek Smoluch
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Krakow, Mickiewicza 30 Street, 30-059, Krakow, Poland
| | - Krzysztof Brzózka
- Department of Drug Metabolism and Pharmacokinetics, Ryvu Therapeutics S.A., Sternbacha 2 Street, 30-394, Krakow, Poland
| | - Kamil Kus
- Department of Drug Metabolism and Pharmacokinetics, Ryvu Therapeutics S.A., Sternbacha 2 Street, 30-394, Krakow, Poland
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Kim MC, Lee YJ. Analysis of Time-Dependent Pharmacokinetics Using In Vitro-In Vivo Extrapolation and Physiologically Based Pharmacokinetic Modeling. Pharmaceutics 2022; 14:pharmaceutics14122562. [PMID: 36559055 PMCID: PMC9780873 DOI: 10.3390/pharmaceutics14122562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/17/2022] [Accepted: 11/17/2022] [Indexed: 11/24/2022] Open
Abstract
SCR430, a sorafenib derivative, is an investigational drug exhibiting anti-tumor action. This study aimed to have a mechanistic understanding of SCR430's time-dependent pharmacokinetics (TDPK) through an ex vivo study combined with an in vitro-in vivo extrapolation (IVIVE) and physiologically based pharmacokinetic (PBPK) modeling. A non-compartmental pharmacokinetic analysis was performed after intravenous SCR430 administration in female Sprague-Dawley rats for a control group (no treatment), a vehicle group (vehicle only, 14 days, PO), and a repeated-dosing group (SCR430, 30 mg/kg/day, 14 days, PO). In addition, hepatic uptake and metabolism modulation were investigated using isolated hepatocytes from each group of rats. The minimal PBPK model based on IVIVE was constructed to explain SCR430's TDPK. Repeated SCR430 administration decreased the systemic exposure by 4.4-fold, which was explained by increased hepatic clearance (4.7-fold). The ex vivo study using isolated hepatocytes from each group suggested that the increased hepatic uptake (9.4-fold), not the metabolic activity, contributes to the increased hepatic clearance. The minimal PBPK modeling based on an ex vivo study could explain the decreased plasma levels after the repeated doses. The current study demonstrates the TDPK after repeated dosing by hepatic uptake induction, not hepatic metabolism, as well as the effectiveness of an ex vivo approach combined with IVIVE and PBPK modeling to investigate the TDPK.
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Affiliation(s)
- Min-Chang Kim
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemungu, Seoul 02453, Republic of Korea
- Division of Biopharmaceutics, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Young-Joo Lee
- Division of Biopharmaceutics, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Integrated Drug Development and Natural Products, Kyung Hee University, Seoul 02447, Republic of Korea
- Correspondence:
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The next frontier in ADME science: Predicting transporter-based drug disposition, tissue concentrations and drug-drug interactions in humans. Pharmacol Ther 2022; 238:108271. [DOI: 10.1016/j.pharmthera.2022.108271] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 08/05/2022] [Accepted: 08/17/2022] [Indexed: 12/25/2022]
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Liang X, Lai Y. Overcoming the shortcomings of the extended-clearance concept: a framework for developing a physiologically-based pharmacokinetic (PBPK) model to select drug candidates involving transporter-mediated clearance. Expert Opin Drug Metab Toxicol 2021; 17:869-886. [PMID: 33793347 DOI: 10.1080/17425255.2021.1912012] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Introduction:Human pharmacokinetic (PK) prediction can be a significant challenge to drug candidates undergoing transporter-mediated clearance, when only animal data and in vitro human parameters are available in the drug discovery stage.Areas covered:The extended clearance concept (ECC) that incorporates the processes of hepatic uptake, passive diffusion, metabolism and biliary secretion has been adapted to determine the rate-determining process of hepatic clearance and drug-drug interactions (DDIs). However, since the ECC is derived from the well-stirred model and does not consider the liver as a drug distribution organ to reflect the time-dependent variation of drug concentrations between the liver and plasma, it can be misused for compound selection in drug discovery.Expert opinion:The PBPK model consists of a set of differential equations of drug mass balance, and can overcome the shortcomings of the ECC in predicting human PK. The predictability, relevance and reliability of the model and the scaling factors for IVIVE must be validated using either the measured liver concentrations or DDI data with known transporter inhibitors, or both, in monkeys. A human PBPK model that incorporates in vitro human data and SFs obtained from the validated monkey PBPK model can be used for compound selection in the drug discovery phase.
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Affiliation(s)
- Xiaomin Liang
- Drug Metabolism, Gilead Sciences Inc., Foster City, CA, USA
| | - Yurong Lai
- Drug Metabolism, Gilead Sciences Inc., Foster City, CA, USA
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Murad H, Ahmed O, Ghabrah T, Gari M. Telmisartan Self-Nanoemulsifying Drug Delivery System, Compared With Standard Telmisartan, More Effectively Improves Hepatic Fibrosis in Rats. Dose Response 2020; 18:1559325820982190. [PMID: 33414695 PMCID: PMC7750776 DOI: 10.1177/1559325820982190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/13/2020] [Accepted: 11/26/2020] [Indexed: 12/30/2022] Open
Abstract
Background This study was designed to examine effects of telmisartan; an angiotensin receptor blocker; self-nanoemulsifying drug delivery system (SNEDDS) in reversing already-established hepatic fibrosis. Method Forty rats were given thioacetamide (200 mg/kg, intraperitoneally) twice/week for 8 weeks then divided into 5 groups (n = 8), PC and 4 treated groups. Treatments were given orally for another 2 months as follows: telmisartan low and high doses (TL and TH: 1.8 and 3.6 mg/kg/day) and telmisartan SNEDDS at the same doses (TLS and THS). At end of treatment, blood was obtained and liver was isolated. Results Rats showed significant elevations of plasma ALT and AST and hepatic IL-6, TNF-α, and MDA, significant reductions of plasma albumin, hepatic GSH, and body weight, and hepatic histopathological damage. All treatments except for TL significantly reversed these thioacetamide-induced changes. THS group showed significant differences from all groups. Regarding ratio of free telmisartan concentration in hepatic homogenate to that of plasma, TH and TLS groups showed non-significant variation between each other while THS group showed significant differences from them. No significant changes were detected in blood pressure, hemoglobin, white blood cells, and platelets. Conclusion Telmisartan SNEDDS, compared with telmisartan, more effectively reversed chronic hepatic fibrosis with good safety profile.
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Affiliation(s)
- Hussam Murad
- Department of Pharmacology, Faculty of Medicine, Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Pharmacology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Osama Ahmed
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tawfik Ghabrah
- Department of Community Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mamdooh Gari
- Department of Molecular Genetics, Faculty of Applied Medical Science, King Abdulaziz University, Jeddah, Saudi Arabia
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Yoshikado T, Lee W, Toshimoto K, Morita K, Kiriake A, Chu X, Lee N, Kimoto E, Varma MVS, Kikuchi R, Scialis RJ, Shen H, Ishiguro N, Lotz R, Li AP, Maeda K, Kusuhara H, Sugiyama Y. Evaluation of Hepatic Uptake of OATP1B Substrates by Short Term-Cultured Plated Human Hepatocytes: Comparison With Isolated Suspended Hepatocytes. J Pharm Sci 2020; 110:376-387. [PMID: 33122051 DOI: 10.1016/j.xphs.2020.10.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 12/13/2022]
Abstract
Hepatic uptake clearance has been measured in suspended human hepatocytes (SHH). Plated human hepatocytes (PHH) after short-term culturing are increasingly employed to study hepatic transport driven mainly by its higher throughput. To know pros/cons of both systems, the hepatic uptake clearances of several organic anion transporting polypeptide 1B substrates were compared between PHH and SHH by determining the initial uptake velocities or through dynamic model-based analyses. For cerivastatin, pitavastatin and rosuvastatin, initial uptake clearances (PSinf) obtained using PHH were comparable to those using SHH, while cell-to-medium concentration (C/M) ratios were 2.7- to 5.4-fold higher. For pravastatin and dehydropravastatin, hydrophilic compounds with low uptake/cellular binding, their PSinf and C/M ratio in PHH were 1.8- to 3.2-fold lower than those in SHH. These hydrophilic substrates are more prone to wash-off during the uptake study using PHH, which may explain the apparently lower uptake than SHH. The C/M ratios obtained using PHH were stable over an extended time, making PHH suitable to estimate the C/M ratios and hepatocyte-to-medium unbound concentration ratios (Kp,uu). In conclusion, PHH is useful in evaluating hepatic uptake/efflux clearances and Kp,uu of OATP1B substrates in a high-throughput manner, however, a caution is warranted for hydrophilic drugs with low uptake/cellular binding.
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Affiliation(s)
- Takashi Yoshikado
- Sugiyama Laboratory, RIKEN Baton Zone Program, RIKEN Cluster for Science, Technology and Innovation Hub, RIKEN, Yokohama, Kanagawa, Japan; Laboratory of Clinical Pharmacology, Yokohama University of Pharmacy, Yokohama, Kanagawa, Japan
| | - Wooin Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, Korea
| | - Kota Toshimoto
- Sugiyama Laboratory, RIKEN Baton Zone Program, RIKEN Cluster for Science, Technology and Innovation Hub, RIKEN, Yokohama, Kanagawa, Japan
| | - Kiyoe Morita
- Sugiyama Laboratory, RIKEN Baton Zone Program, RIKEN Cluster for Science, Technology and Innovation Hub, RIKEN, Yokohama, Kanagawa, Japan
| | - Aya Kiriake
- Sugiyama Laboratory, RIKEN Baton Zone Program, RIKEN Cluster for Science, Technology and Innovation Hub, RIKEN, Yokohama, Kanagawa, Japan
| | | | - Nora Lee
- Daewoong Pharmaceutical Co., Ltd, Seoul, Korea
| | - Emi Kimoto
- ADME Sciences, Medicine Design, Worldwide Research and Development, Pfizer Inc, Groton, CT, USA
| | - Manthena V S Varma
- ADME Sciences, Medicine Design, Worldwide Research and Development, Pfizer Inc, Groton, CT, USA
| | | | | | - Hong Shen
- Bristol Myers Squibb, Princeton, NJ, USA
| | - Naoki Ishiguro
- Pharmacokinetics and Non-Clinical Safety Department, Nippon Boehringer Ingelheim Co., Ltd, Kobe, Hyogo, Japan
| | - Ralf Lotz
- Drug Metabolism and Pharmacokinetics, Boehringer Ingelheim Pharma GmbH & Co., KG, Biberach an der Riss, Germany
| | - Albert P Li
- In Vitro ADMET Laboratories Inc, Columbia, MA, USA
| | - Kazuya Maeda
- Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Kusuhara
- Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Yuichi Sugiyama
- Sugiyama Laboratory, RIKEN Baton Zone Program, RIKEN Cluster for Science, Technology and Innovation Hub, RIKEN, Yokohama, Kanagawa, Japan.
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Tess DA, Eng H, Kalgutkar AS, Litchfield J, Edmonds DJ, Griffith DA, Varma MVS. Predicting the Human Hepatic Clearance of Acidic and Zwitterionic Drugs. J Med Chem 2020; 63:11831-11844. [PMID: 32985885 DOI: 10.1021/acs.jmedchem.0c01033] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Prospective predictions of human hepatic clearance for anionic/zwitterionic compounds, which are oftentimes subjected to transporter-mediated uptake, are challenging in drug discovery. We evaluated the utility of preclinical species, rats and cynomolgus monkeys [nonhuman primates (NHPs)], to predict the human hepatic clearance using a diverse set of acidic/zwitterionic drugs. Preclinical clearance data were generated following intravenous dosing in rats/NHPs and compared to the human clearance data (n = 18/27). Single-species scaling of NHP clearance with an allometric exponent of 0.50 allowed for good prediction of human clearance (fold error ∼2.1, bias ∼1.0), with ∼86% predictions within 3-fold. In comparison, rats underpredicted the clearance of lipophilic acids, while overprediction was noted for hydrophilic acids. Finally, an in vitro clearance assay based on human hepatocytes, which is routinely used in discovery setting, markedly underpredicted human clearance (bias ∼0.12). Collectively, this study provides insights into the usefulness of the preclinical models in enabling pharmacokinetic optimization for acid/zwitterionic drug candidates.
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Affiliation(s)
- David A Tess
- Medicine Design, Pfizer Worldwide Research & Development, Cambridge, Massachusetts 02139, United States
| | - Heather Eng
- Medicine Design, Pfizer Worldwide Research & Development, Groton, Connecticut 06340, United States
| | - Amit S Kalgutkar
- Medicine Design, Pfizer Worldwide Research & Development, Cambridge, Massachusetts 02139, United States
| | - John Litchfield
- Medicine Design, Pfizer Worldwide Research & Development, Cambridge, Massachusetts 02139, United States
| | - David J Edmonds
- Medicine Design, Pfizer Worldwide Research & Development, Cambridge, Massachusetts 02139, United States
| | - David A Griffith
- Medicine Design, Pfizer Worldwide Research & Development, Cambridge, Massachusetts 02139, United States
| | - Manthena V S Varma
- Medicine Design, Pfizer Worldwide Research & Development, Groton, Connecticut 06340, United States
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Docci L, Umehara K, Krähenbühl S, Fowler S, Parrott N. Construction and Verification of Physiologically Based Pharmacokinetic Models for Four Drugs Majorly Cleared by Glucuronidation: Lorazepam, Oxazepam, Naloxone, and Zidovudine. AAPS JOURNAL 2020; 22:128. [DOI: 10.1208/s12248-020-00513-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 09/24/2020] [Indexed: 02/07/2023]
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Perry C, Davis G, Conner TM, Zhang T. Utilization of Physiologically Based Pharmacokinetic Modeling in Clinical Pharmacology and Therapeutics: an Overview. ACTA ACUST UNITED AC 2020; 6:71-84. [PMID: 32399388 PMCID: PMC7214223 DOI: 10.1007/s40495-020-00212-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The purpose of this review was to assess the advancement of applications for physiologically based pharmacokinetic (PBPK) modeling in various therapeutic areas. We conducted a PubMed search, and 166 articles published between 2012 and 2018 on FDA-approved drug products were selected for further review. Qualifying publications were summarized according to therapeutic area, medication(s) studied, pharmacokinetic model type utilized, simulator program used, and the applications of that modeling. The results showed a 13-fold increase in the number of papers published from 2012 to 2018, with the largest proportion of articles dedicated to the areas of infectious diseases, oncology, and neurology, and application extensions including prediction of drug-drug interactions due to metabolism and/or transporter-mediated effects and understanding drug kinetics in special populations. In addition, we profiled several high-impact studies whose results were used to guide package insert information and formulate dose recommendations. These results show that while utilization of PBPK modeling has drastically increased over the past several years, regulatory support, lack of easy-to-use systems for clinicians, and challenges with model validation remain major challenges for the widespread adoption of this practice in institutional and ambulatory settings. However, PBPK modeling will continue to be a useful tool in the future to assess therapeutic drug monitoring and the growing field of personalized medicine.
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Affiliation(s)
- Courtney Perry
- School of Pharmacy, Husson University, Bangor, ME 04401 USA
| | - Grace Davis
- School of Pharmacy, Husson University, Bangor, ME 04401 USA
| | - Todd M Conner
- School of Pharmacy, Husson University, Bangor, ME 04401 USA
| | - Tao Zhang
- School of Pharmacy, Husson University, Bangor, ME 04401 USA
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Alluri RV, Li R, Varma MVS. Transporter–enzyme interplay and the hepatic drug clearance: what have we learned so far? Expert Opin Drug Metab Toxicol 2020; 16:387-401. [DOI: 10.1080/17425255.2020.1749595] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ravindra V. Alluri
- Clinical Pharmacology and Safety Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Rui Li
- Modeling and Simulations, Medicine Design, Worldwide Research and Development, Pfizer Inc., Cambridge, MA, USA
| | - Manthena V. S. Varma
- ADME Sciences, Medicine Design, Worldwide Research and Development, Pfizer Inc., Groton, CT, USA
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Li R, Mathialagan S, Novak JJ, Eng H, Riccardi K, Litchfield J. Estimation of the Effect of OAT2-Mediated Active Uptake on Meloxicam Exposure in the Human Liver. AAPS JOURNAL 2020; 22:20. [PMID: 31900711 DOI: 10.1208/s12248-019-0409-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/12/2019] [Indexed: 11/30/2022]
Abstract
Active uptake mediated by organic anion transporter 2 (OAT2) has been previously hypothesized as a key player in hepatic disposition of its substrates. Previous studies have shown that another hepatic uptake transporter, organic anion transporting polypeptides (OATP) 1B1, significantly elevates liver concentrations of drugs transported by it. As tissue concentration typically governs pharmacodynamics, drug-drug interactions, and toxicity in the liver, it is important to understand if OAT2 functions similarly to OATP1B1 in raising liver exposure. Since this is a research problem that cannot be easily assessed in clinical studies at this time, here we estimated human liver exposure of an OAT2 substrate meloxicam using a deduction method based on physiologically based pharmacokinetic (PBPK) modeling of clinical systemic exposure data. Although in vitro data suggest that OAT2-mediated active uptake is involved in meloxicam disposition, the modeling result concludes that its unbound liver exposure is unlikely significantly different from its unbound systemic exposure. This conclusion is further supported by data and modeling from a terminal monkey study and in vitro hepatocyte studies with bovine serum albumin. Overall, based on currently available data, we do not expect that OAT2 has a strong impact on the liver exposure of meloxicam.
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Affiliation(s)
- Rui Li
- Translational Modeling and Simulation, Medicine Design, Pfizer Worldwide R&D, Cambridge, MA, USA.
| | - Sumathy Mathialagan
- Pharmacokinetics, Dynamics and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, CT, USA
| | - Jonathan J Novak
- Pharmacokinetics, Dynamics and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, CT, USA
| | - Heather Eng
- Pharmacokinetics, Dynamics and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, CT, USA
| | - Keith Riccardi
- Pharmacokinetics, Dynamics and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, CT, USA
| | - John Litchfield
- Pharmacokinetics, Dynamics and Metabolism, Medicine Design, Pfizer Worldwide R&D, Cambridge, MA, USA
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Petersson C, Papasouliotis O, Lecomte M, Badolo L, Dolgos H. Prediction of volume of distribution in humans: analysis of eight methods and their application in drug discovery. Xenobiotica 2019; 50:270-279. [DOI: 10.1080/00498254.2019.1625084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Carl Petersson
- NCE DMPK, Discovery Technology, HealthCare Merck KGaA, Darmstadt, Germany
| | - Orestis Papasouliotis
- Merck Institute for Pharmacometrics (an affiliate of HealthCare Merck KGaA, Darmstadt, Germany), Lausanne, Switzerland)
| | - Marc Lecomte
- NCE DMPK, Discovery Technology, HealthCare Merck KGaA, Darmstadt, Germany
| | - Lassina Badolo
- NCE DMPK, Discovery Technology, HealthCare Merck KGaA, Darmstadt, Germany
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Guo Y, Chu X, Parrott NJ, Brouwer KL, Hsu V, Nagar S, Matsson P, Sharma P, Snoeys J, Sugiyama Y, Tatosian D, Unadkat JD, Huang SM, Galetin A. Advancing Predictions of Tissue and Intracellular Drug Concentrations Using In Vitro, Imaging and Physiologically Based Pharmacokinetic Modeling Approaches. Clin Pharmacol Ther 2018; 104:865-889. [PMID: 30059145 PMCID: PMC6197917 DOI: 10.1002/cpt.1183] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This white paper examines recent progress, applications, and challenges in predicting unbound and total tissue and intra/subcellular drug concentrations using in vitro and preclinical models, imaging techniques, and physiologically based pharmacokinetic (PBPK) modeling. Published examples, regulatory submissions, and case studies illustrate the application of different types of data in drug development to support modeling and decision making for compounds with transporter-mediated disposition, and likely disconnects between tissue and systemic drug exposure. The goals of this article are to illustrate current best practices and outline practical strategies for selecting appropriate in vitro and in vivo experimental methods to estimate or predict tissue and plasma concentrations, and to use these data in the application of PBPK modeling for human pharmacokinetic (PK), efficacy, and safety assessment in drug development.
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Affiliation(s)
- Yingying Guo
- Investigational Drug Disposition, Eli Lilly and Company, Lilly Corporate Center, DC0714, Indianapolis, IN 46285, USA; Tel: 317-277-4324
| | - Xiaoyan Chu
- Department of Pharmacokinetics, Pharmacodynamics and Drug Metabolism, Merck & Co., Inc., Kenilworth, New Jersey 07033, USA; 732-594-0977
| | - Neil J. Parrott
- Pharmaceutical Sciences, Pharmaceutical Research and Early Development, Roche Innovation Centre Basel, F. Hoffmann-La Roche Ltd., Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Kim L.R. Brouwer
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, CB #7569 Kerr Hall, Chapel Hill, NC 27599-7569, USA; Tel: (919) 962-7030
| | - Vicky Hsu
- Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, 10903 New Hampshire Ave, Silver Spring, MD 20993, USA; 301-796-1541
| | - Swati Nagar
- Temple University School of Pharmacy, Department of Pharmaceutical Sciences, 3307 N Broad Street, Philadelphia PA 19140, USA; 215-707-9110
| | - Pär Matsson
- Department of Pharmacy, Uppsala University, Box 580, SE-75123 Uppsala, Sweden +46-(0)18-471 46 30
| | - Pradeep Sharma
- Safety and ADME Translational Sciences, Drug Safety and Metabolism, IMED Biotech Unit, AstraZeneca R&D, Cambridge CB4 0WG, UK
| | - Jan Snoeys
- Department of Pharmacokinetics, Dynamics and Metabolism, Janssen R&D, Beerse, Belgium; Tel: +32-14606812
| | - Yuichi Sugiyama
- Sugiyama Laboratory, RIKEN Innovation Center, RIKEN Research Cluster for Innovation, Yokohama 230-0045, Japan; Tel: (045) 506-1814
| | - Daniel Tatosian
- Department of Pharmacokinetics, Pharmacodynamics and Drug Metabolism, Merck & Co., Inc., Kenilworth, New Jersey 07033, USA; 908-464-2375
| | - Jashvant D. Unadkat
- Department of Pharmaceutics, University of Washington, Seattle, WA, USA; 206-685-2869
| | - Shiew-Mei Huang
- Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, 10903 New Hampshire Ave, Silver Spring, MD 20993, USA; 301-796-1541
| | - Aleksandra Galetin
- Centre for Applied Pharmacokinetic Research, School of Health Sciences, The University of Manchester, Manchester M13 9PT, UK; + 44-161-275-6886
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14
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Evaluation of Generic Methods to Predict Human Pharmacokinetics Using Physiologically Based Pharmacokinetic Model for Early Drug Discovery of Tyrosine Kinase Inhibitors. Eur J Drug Metab Pharmacokinet 2018; 44:121-132. [DOI: 10.1007/s13318-018-0496-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Bae SH, Park WS, Han S, Park GJ, Lee J, Hong T, Jeon S, Yim DS. Physiologically-based pharmacokinetic predictions of intestinal BCRP-mediated drug interactions of rosuvastatin in Koreans. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2018; 22:321-329. [PMID: 29719454 PMCID: PMC5928345 DOI: 10.4196/kjpp.2018.22.3.321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 01/17/2018] [Accepted: 02/19/2018] [Indexed: 12/22/2022]
Abstract
It was recently reported that the Cmax and AUC of rosuvastatin increases when it is coadministered with telmisartan and cyclosporine. Rosuvastatin is known to be a substrate of OATP1B1, OATP1B3, NTCP, and BCRP transporters. The aim of this study was to explore the mechanism of the interactions between rosuvastatin and two perpetrators, telmisartan and cyclosporine. Published (cyclosporine) or newly developed (telmisartan) PBPK models were used to this end. The rosuvastatin model in Simcyp (version 15)'s drug library was modified to reflect racial differences in rosuvastatin exposure. In the telmisartan–rosuvastatin case, simulated rosuvastatin CmaxI/Cmax and AUCI/AUC (with/without telmisartan) ratios were 1.92 and 1.14, respectively, and the Tmax changed from 3.35 h to 1.40 h with coadministration of telmisartan, which were consistent with the aforementioned report (CmaxI/Cmax: 2.01, AUCI/AUC:1.18, Tmax: 5 h → 0.75 h). In the next case of cyclosporine–rosuvastatin, the simulated rosuvastatin CmaxI/Cmax and AUCI/AUC (with/without cyclosporine) ratios were 3.29 and 1.30, respectively. The decrease in the CLint,BCRP,intestine of rosuvastatin by telmisartan and cyclosporine in the PBPK model was pivotal to reproducing this finding in Simcyp. Our PBPK model demonstrated that the major causes of increase in rosuvastatin exposure are mediated by intestinal BCRP (rosuvastatin–telmisartan interaction) or by both of BCRP and OATP1B1/3 (rosuvastatin–cyclosporine interaction).
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Affiliation(s)
- Soo Hyeon Bae
- Department of Clinical Pharmacology and Therapeutics, Seoul St. Mary's Hospital, Seoul 06591, Korea.,PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
| | - Wan-Su Park
- Department of Clinical Pharmacology and Therapeutics, Seoul St. Mary's Hospital, Seoul 06591, Korea.,PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
| | - Seunghoon Han
- Department of Clinical Pharmacology and Therapeutics, Seoul St. Mary's Hospital, Seoul 06591, Korea.,PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
| | - Gab-Jin Park
- Department of Clinical Pharmacology and Therapeutics, Seoul St. Mary's Hospital, Seoul 06591, Korea.,PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
| | - Jongtae Lee
- Department of Clinical Pharmacology and Therapeutics, Seoul St. Mary's Hospital, Seoul 06591, Korea.,PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
| | - Taegon Hong
- Department of Clinical Pharmacology, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea
| | | | - Dong-Seok Yim
- Department of Clinical Pharmacology and Therapeutics, Seoul St. Mary's Hospital, Seoul 06591, Korea.,PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
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16
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Keemink J, Deferm N, De Bruyn T, Augustijns P, Bouillon T, Annaert P. Effect of Cryopreservation on Enzyme and Transporter Activities in Suspended and Sandwich Cultured Rat Hepatocytes. AAPS JOURNAL 2018; 20:33. [PMID: 29468289 DOI: 10.1208/s12248-018-0188-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 01/03/2018] [Indexed: 12/11/2022]
Abstract
Freshly-isolated rat hepatocytes are commonly used as tools for hepatic drug disposition. From an ethical point of view, it is important to maximize the use of isolated hepatocytes by cryopreservation. The present study compared overall hepatocyte functionality as well as activity of the organic anion transporting polypeptide (Oatp), multidrug resistance-associated protein 2 (Mrp2), and UDP-glucuronosyltransferase 1 (Ugt1), in in vitro models established with cryopreserved and freshly-isolated hepatocytes. A similar culture time-dependent decline in cellular functionality, as assessed by urea production, was observed in sandwich-cultured hepatocytes (SCH) obtained from freshly-isolated and cryopreserved cells. Concentration-dependent uptake kinetics of the Oatp substrate sodium fluorescein in suspended hepatocytes (SH) or SCH were not significantly affected by cryopreservation. Mrp2-mediated biliary excretion of 5 (and 6)-carboxy-2',7'-dichlorofluorescein by SCH was assessed with semi-quantitative fluorescence imaging: biliary excretion index values increased between day 3 and day 4, but did not differ significantly between cryopreserved and freshly-isolated hepatocytes. Finally, telmisartan disposition was evaluated in SCH to simultaneously explore Oatp, Ugt1, and Mrp2 activity. In order to distinguish between the susceptibilities of the individual disposition pathways to cryopreservation, a mechanistic cellular disposition model was developed. Basolateral and canalicular efflux as well as glucuronidation of telmisartan were affected by cryopreservation. In contrast, the disposition parameters of telmisartan-glucuronide were not impacted by cryopreservation. Overall, the relative contribution of the rate-determining processes (uptake, metabolism, efflux) remained unaltered between cryopreserved and freshly-isolated hepatocytes, indicating that cryopreserved hepatocytes are a suitable alternative for freshly-isolated hepatocytes when studying these cellular disposition pathways.
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Affiliation(s)
- Janneke Keemink
- Drug Delivery and Disposition, KU Leuven Department of Pharmaceutical and Pharmacological Sciences, Gasthuisberg O&N2 Herestraat 49-box 921, 3000, Leuven, Belgium.,Drug Delivery, Department of Pharmacy, Uppsala University, Uppsala, Sweden
| | - Neel Deferm
- Drug Delivery and Disposition, KU Leuven Department of Pharmaceutical and Pharmacological Sciences, Gasthuisberg O&N2 Herestraat 49-box 921, 3000, Leuven, Belgium
| | - Tom De Bruyn
- Drug Delivery and Disposition, KU Leuven Department of Pharmaceutical and Pharmacological Sciences, Gasthuisberg O&N2 Herestraat 49-box 921, 3000, Leuven, Belgium.,Genentech, Inc, South San Francisco, California, USA
| | - Patrick Augustijns
- Drug Delivery and Disposition, KU Leuven Department of Pharmaceutical and Pharmacological Sciences, Gasthuisberg O&N2 Herestraat 49-box 921, 3000, Leuven, Belgium
| | - Thomas Bouillon
- Drug Delivery and Disposition, KU Leuven Department of Pharmaceutical and Pharmacological Sciences, Gasthuisberg O&N2 Herestraat 49-box 921, 3000, Leuven, Belgium
| | - Pieter Annaert
- Drug Delivery and Disposition, KU Leuven Department of Pharmaceutical and Pharmacological Sciences, Gasthuisberg O&N2 Herestraat 49-box 921, 3000, Leuven, Belgium.
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17
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Li R, Kimoto E, Niosi M, Tess DA, Lin J, Tremaine LM, Di L. A Study on Pharmacokinetics of Bosentan with Systems Modeling, Part 2: Prospectively Predicting Systemic and Liver Exposure in Healthy Subjects. Drug Metab Dispos 2018; 46:357-366. [PMID: 29330219 DOI: 10.1124/dmd.117.078808] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 01/08/2018] [Indexed: 12/18/2022] Open
Abstract
Predicting human pharmacokinetics of novel compounds is a critical step in drug discovery and clinical study design but continues to be a challenging task for hepatic transporter substrates, particularly in predicting their liver exposures. In this study, using bosentan as an example, we prospectively predicted systemic exposure and the (pseudo) steady-state unbound liver-to-unbound plasma ratio (Kpuu) in healthy subjects using 1) a mechanistic approach solely based on in vitro hepatocyte assays and 2) an approach based on hepatic process rates from monkey in vivo data but Michaelis-Menten constants from in vitro data. Both methods reasonably match the observed human systemic time course data, but the second method leads to better prediction accuracy. In addition, the second method can predict a human Kpuu value that is close to the value deduced using clinical data. We also generated rat and monkey liver Kpuu values in terminal studies. However, these directly measured animal values are different from the deduced human value.
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Affiliation(s)
- Rui Li
- Systems Modeling and Simulation, Medicine Design, Pfizer Worldwide R&D, Cambridge, Massachusetts (R.L.); and Pharmacokinetics, Dynamics, and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, Connecticut (E.K., M.N., D.A.T., J.L., L.M.T., L.D.)
| | - Emi Kimoto
- Systems Modeling and Simulation, Medicine Design, Pfizer Worldwide R&D, Cambridge, Massachusetts (R.L.); and Pharmacokinetics, Dynamics, and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, Connecticut (E.K., M.N., D.A.T., J.L., L.M.T., L.D.)
| | - Mark Niosi
- Systems Modeling and Simulation, Medicine Design, Pfizer Worldwide R&D, Cambridge, Massachusetts (R.L.); and Pharmacokinetics, Dynamics, and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, Connecticut (E.K., M.N., D.A.T., J.L., L.M.T., L.D.)
| | - David A Tess
- Systems Modeling and Simulation, Medicine Design, Pfizer Worldwide R&D, Cambridge, Massachusetts (R.L.); and Pharmacokinetics, Dynamics, and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, Connecticut (E.K., M.N., D.A.T., J.L., L.M.T., L.D.)
| | - Jian Lin
- Systems Modeling and Simulation, Medicine Design, Pfizer Worldwide R&D, Cambridge, Massachusetts (R.L.); and Pharmacokinetics, Dynamics, and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, Connecticut (E.K., M.N., D.A.T., J.L., L.M.T., L.D.)
| | - Larry M Tremaine
- Systems Modeling and Simulation, Medicine Design, Pfizer Worldwide R&D, Cambridge, Massachusetts (R.L.); and Pharmacokinetics, Dynamics, and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, Connecticut (E.K., M.N., D.A.T., J.L., L.M.T., L.D.)
| | - Li Di
- Systems Modeling and Simulation, Medicine Design, Pfizer Worldwide R&D, Cambridge, Massachusetts (R.L.); and Pharmacokinetics, Dynamics, and Metabolism, Medicine Design, Pfizer Worldwide R&D, Groton, Connecticut (E.K., M.N., D.A.T., J.L., L.M.T., L.D.)
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18
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Morse BL, MacGuire JG, Marino AM, Zhao Y, Fox M, Zhang Y, Shen H, Griffith Humphreys W, Marathe P, Lai Y. Physiologically Based Pharmacokinetic Modeling of Transporter-Mediated Hepatic Clearance and Liver Partitioning of OATP and OCT Substrates in Cynomolgus Monkeys. AAPS JOURNAL 2017; 19:1878-1889. [PMID: 29019117 DOI: 10.1208/s12248-017-0151-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/19/2017] [Indexed: 01/11/2023]
Abstract
In the present investigations, we evaluate in vitro hepatocyte uptake and partitioning for the prediction of in vivo clearance and liver partitioning. Monkeys were intravenously co-dosed with rosuvastatin and bosentan, substrates of the organic anion transporting polypeptides (OATPs), and metformin, a substrate of organic cation transporter 1 (OCT1). Serial plasma and liver samples were collected over time. Liver and plasma unbound fraction was determined using equilibrium dialysis. In vivo unbound partitioning (Kpu,u) for rosuvastatin, bosentan, and metformin, calculated from total concentrations in the liver and plasma, were 243, 553, and 15, respectively. A physiologically based pharmacokinetic monkey model that incorporates active and passive hepatic uptake was developed to fit plasma and liver concentrations. In addition, a two-compartment model was used to fit in vitro hepatic uptake curves in suspended monkey hepatocyte to determine active uptake, passive diffusion, and intracellular unbound fraction parameters. At steady-state in the model, in vitro Kpu,u was determined. The results demonstrated that in vitro values under-predicted in vivo active uptake for rosuvastatin, bosentan, and metformin by 6.7-, 28-, and 1.5-fold, respectively, while passive diffusion was over-predicted. In vivo Kpu,u values were under-predicted from in vitro data by 30-, 79-, and 3-fold. In conclusion, active uptake and liver partitioning in monkeys for OATP substrates were greatly under-predicted from in vitro hepatocyte uptake, while OCT-mediated uptake and partitioning scaled reasonably well from in vitro, demonstrating substrate- and transporter-dependent scaling factors. The combination of in vitro experimental and modeling approaches proved useful for assessing prediction of in vivo intracellular partitioning.
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Affiliation(s)
- Bridget L Morse
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb, Princeton, NJ, USA.,Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, USA
| | - Jamus G MacGuire
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb, Princeton, NJ, USA
| | - Anthony M Marino
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb, Princeton, NJ, USA
| | - Yue Zhao
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb, Princeton, NJ, USA
| | - Maxine Fox
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb, Princeton, NJ, USA
| | - Yueping Zhang
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb, Princeton, NJ, USA
| | - Hong Shen
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb, Princeton, NJ, USA
| | | | - Punit Marathe
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb, Princeton, NJ, USA
| | - Yurong Lai
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb, Princeton, NJ, USA. .,Drug Metabolism, Gilead Sciences Inc., Foster City, California, 94404, USA.
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19
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de Kanter R, Kohl C. Letter to the Editor, Physiologically based pharmacokinetic predictions of intestinal BCRP-mediated effect of telmisartan on the pharmacokinetics of rosuvastatin in humans. Biopharm Drug Dispos 2017; 38:443-444. [DOI: 10.1002/bdd.2079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 04/20/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Ruben de Kanter
- Preclinical Pharmacokinetics and Metabolism; Actelion Pharmaceuticals Ltd; Allschwil Switzerland
| | - Christopher Kohl
- Preclinical Pharmacokinetics and Metabolism; Actelion Pharmaceuticals Ltd; Allschwil Switzerland
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20
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Yim DS. Author's response to letter to the editor on: Physiologically based pharmacokinetic predictions of intestinal BCRP-mediated effect of telmisartan on the pharmacokinetics of rosuvastatin in humans. Biopharm Drug Dispos 2017; 38:445. [DOI: 10.1002/bdd.2082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 04/26/2017] [Accepted: 04/30/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Dong-Seok Yim
- Department of Clinical Pharmacology and Therapeutics; Seoul St Mary's Hospital; Seoul South Korea
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21
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Kaschek D, Sharanek A, Guillouzo A, Timmer J, Weaver RJ. A Dynamic Mathematical Model of Bile Acid Clearance in HepaRG Cells. Toxicol Sci 2017; 161:48-57. [DOI: 10.1093/toxsci/kfx199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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22
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Nguyen HQ, Lin J, Kimoto E, Callegari E, Tse S, Obach RS. Prediction of Losartan-Active Carboxylic Acid Metabolite Exposure Following Losartan Administration Using Static and Physiologically Based Pharmacokinetic Models. J Pharm Sci 2017; 106:2758-2770. [DOI: 10.1016/j.xphs.2017.03.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/22/2017] [Accepted: 03/27/2017] [Indexed: 01/02/2023]
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23
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Jaroch K, Jaroch A, Bojko B. Cell cultures in drug discovery and development: The need of reliable in vitro-in vivo extrapolation for pharmacodynamics and pharmacokinetics assessment. J Pharm Biomed Anal 2017; 147:297-312. [PMID: 28811111 DOI: 10.1016/j.jpba.2017.07.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 07/16/2017] [Accepted: 07/19/2017] [Indexed: 12/21/2022]
Abstract
For ethical and cost-related reasons, use of animals for the assessment of mode of action, metabolism and/or toxicity of new drug candidates has been increasingly scrutinized in research and industrial applications. Implementation of the 3 "Rs"1; rule (Reduction, Replacement, Refinement) through development of in silico or in vitro assays has become an essential element of risk assessment. Physiologically based pharmacokinetic (PBPK2) modeling is the most potent in silico tool used for extrapolation of pharmacokinetic parameters to animal or human models from results obtained in vitro. Although, many types of in vitro assays are conducted during drug development, use of cell cultures is the most reliable one. Two-dimensional (2D) cell cultures have been a part of drug development for many years. Nowadays, their role is decreasing in favor of three-dimensional (3D) cell cultures and co-cultures. 3D cultures exhibit protein expression patterns and intercellular junctions that are closer to in vivo states in comparison to classical monolayer cultures. Co-cultures allow for examinations of the mutual influence of different cell lines. However, the complexity and high costs of co-cultures and 3D equipment exclude such methods from high-throughput screening (HTS).3In vitro absorption, distribution, metabolism, and excretion assessment, as well as drug-drug interaction (DDI), are usually performed with the use of various cell culture based assays. Progress in in silico and in vitro methods can lead to better in vitro-in vivo extrapolation (IVIVE4) outcomes and have a potential to contribute towards a significant reduction in the number of laboratory animals needed for drug research. As such, concentrated efforts need to be spent towards the development of an HTS in vitro platform with satisfactory IVIVE features.
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Affiliation(s)
- Karol Jaroch
- Department of Pharmacodynamics and Molecular Pharmacology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Jurasza 2 Street, 85-089 Bydgoszcz, Poland
| | - Alina Jaroch
- Department and Institute of Nutrition and Dietetics, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Dębowa 3 Street, 85-626 Bydgoszcz, Poland; Department and Clinic of Geriatrics, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Curie Sklodowskiej 9 Street, 85-094 Bydgoszcz, Poland
| | - Barbara Bojko
- Department of Pharmacodynamics and Molecular Pharmacology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Jurasza 2 Street, 85-089 Bydgoszcz, Poland.
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24
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Kimoto E, Bi YA, Kosa RE, Tremaine LM, Varma MVS. Hepatobiliary Clearance Prediction: Species Scaling From Monkey, Dog, and Rat, and In Vitro-In Vivo Extrapolation of Sandwich-Cultured Human Hepatocytes Using 17 Drugs. J Pharm Sci 2017; 106:2795-2804. [PMID: 28456723 DOI: 10.1016/j.xphs.2017.04.043] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 04/19/2017] [Accepted: 04/20/2017] [Indexed: 11/26/2022]
Abstract
Hepatobiliary elimination can be a major clearance pathway dictating the pharmacokinetics of drugs. Here, we first compared the dose eliminated in bile in preclinical species (monkey, dog, and rat) with that in human and further evaluated single-species scaling (SSS) to predict human hepatobiliary clearance. Six compounds dosed in bile duct-cannulated (BDC) monkeys showed biliary excretion comparable to human; and the SSS of hepatobiliary clearance with plasma fraction unbound correction yielded reasonable predictions (within 3-fold). Although dog SSS also showed reasonable predictions, rat overpredicted hepatobiliary clearance for 13 of 24 compounds. Second, we evaluated the translatability of in vitro sandwich-cultured human hepatocytes (SCHHs) to predict human hepatobiliary clearance for 17 drugs. For drugs with no significant active uptake in SCHH studies (i.e., with or without rifamycin SV), measured intrinsic biliary clearance was directly scalable with good predictability (absolute average fold error [AAFE] = 1.6). Drugs showing significant active uptake in SCHH, however, showed improved predictability when scaled based on extended clearance term (AAFE = 2.0), which incorporated sinusoidal uptake along with a global scaling factor for active uptake and the canalicular efflux clearance. In conclusion, SCHH is a useful tool to predict human hepatobiliary clearance, whereas BDC monkey model may provide further confidence in the prospective predictions.
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Affiliation(s)
- Emi Kimoto
- Pharmacokinetics, Pharmacodynamics & Metabolism Department-New Chemical Entities, Pfizer Inc., Groton, Connecticut 06340
| | - Yi-An Bi
- Pharmacokinetics, Pharmacodynamics & Metabolism Department-New Chemical Entities, Pfizer Inc., Groton, Connecticut 06340
| | - Rachel E Kosa
- Pharmacokinetics, Pharmacodynamics & Metabolism Department-New Chemical Entities, Pfizer Inc., Groton, Connecticut 06340
| | - Larry M Tremaine
- Pharmacokinetics, Pharmacodynamics & Metabolism Department-New Chemical Entities, Pfizer Inc., Groton, Connecticut 06340
| | - Manthena V S Varma
- Pharmacokinetics, Pharmacodynamics & Metabolism Department-New Chemical Entities, Pfizer Inc., Groton, Connecticut 06340.
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25
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Ge S, Wei Y, Yin T, Xu B, Gao S, Hu M. Transport–Glucuronidation Classification System and PBPK Modeling: New Approach To Predict the Impact of Transporters on Disposition of Glucuronides. Mol Pharm 2017; 14:2884-2898. [DOI: 10.1021/acs.molpharmaceut.6b00941] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shufan Ge
- Department
of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, The University of Houston, 1441 Moursund Street, Houston, Texas 77030, United States
| | - Yingjie Wei
- Key
Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, 100 Shizi Street, Nanjing 210028, China
| | - Taijun Yin
- Department
of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, The University of Houston, 1441 Moursund Street, Houston, Texas 77030, United States
| | - Beibei Xu
- Department
of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, The University of Houston, 1441 Moursund Street, Houston, Texas 77030, United States
| | - Song Gao
- Department
of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, The University of Houston, 1441 Moursund Street, Houston, Texas 77030, United States
| | - Ming Hu
- Department
of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, The University of Houston, 1441 Moursund Street, Houston, Texas 77030, United States
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26
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Bae SH, Park WS, Han S, Park GJ, Lee J, Hong T, Jeon S, Yim DS. Retracted: Physiologically based pharmacokinetic predictions of intestinal BCRP-mediated effect of telmisartan on the pharmacokinetics of rosuvastatin in humans. Biopharm Drug Dispos 2017; 38:363. [DOI: 10.1002/bdd.2060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Soo Hyeon Bae
- Department of Clinical Pharmacology and Therapeutics; Seoul St Mary's Hospital; Seoul Korea
- PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine; The Catholic University of Korea; Seoul Korea
| | - Wan-Su Park
- Department of Clinical Pharmacology and Therapeutics; Seoul St Mary's Hospital; Seoul Korea
- PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine; The Catholic University of Korea; Seoul Korea
| | - Seunghoon Han
- Department of Clinical Pharmacology and Therapeutics; Seoul St Mary's Hospital; Seoul Korea
- PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine; The Catholic University of Korea; Seoul Korea
| | - Gab-jin Park
- Department of Clinical Pharmacology and Therapeutics; Seoul St Mary's Hospital; Seoul Korea
- PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine; The Catholic University of Korea; Seoul Korea
| | - Jongtae Lee
- Department of Clinical Pharmacology and Therapeutics; Seoul St Mary's Hospital; Seoul Korea
- PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine; The Catholic University of Korea; Seoul Korea
| | - Taegon Hong
- Department of Clinical Pharmacology; Severance Hospital, Yonsei University College of Medicine; Seoul Korea
| | | | - Dong-Seok Yim
- Department of Clinical Pharmacology and Therapeutics; Seoul St Mary's Hospital; Seoul Korea
- PIPET (Pharmacometrics Institute for Practical Education and Training), College of Medicine; The Catholic University of Korea; Seoul Korea
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27
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Sandwich-Cultured Hepatocytes as a Tool to Study Drug Disposition and Drug-Induced Liver Injury. J Pharm Sci 2016; 105:443-459. [PMID: 26869411 DOI: 10.1016/j.xphs.2015.11.008] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 11/06/2015] [Accepted: 11/09/2015] [Indexed: 12/21/2022]
Abstract
Sandwich-cultured hepatocytes (SCH) are metabolically competent and have proper localization of basolateral and canalicular transporters with functional bile networks. Therefore, this cellular model is a unique tool that can be used to estimate biliary excretion of compounds. SCH have been used widely to assess hepatobiliary disposition of endogenous and exogenous compounds and metabolites. Mechanistic modeling based on SCH data enables estimation of metabolic and transporter-mediated clearances, which can be used to construct physiologically based pharmacokinetic models for prediction of drug disposition and drug-drug interactions in humans. In addition to pharmacokinetic studies, SCH also have been used to study cytotoxicity and perturbation of biological processes by drugs and hepatically generated metabolites. Human SCH can provide mechanistic insights underlying clinical drug-induced liver injury (DILI). In addition, data generated in SCH can be integrated into systems pharmacology models to predict potential DILI in humans. In this review, applications of SCH in studying hepatobiliary drug disposition and bile acid-mediated DILI are discussed. An example is presented to show how data generated in the SCH model were used to establish a quantitative relationship between intracellular bile acids and cytotoxicity, and how this information was incorporated into a systems pharmacology model for DILI prediction.
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28
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Ge S, Tu Y, Hu M. Challenges and Opportunities with Predicting in Vivo Phase II Metabolism via Glucuronidation from in Vitro Data. ACTA ACUST UNITED AC 2016; 2:326-338. [PMID: 28966903 DOI: 10.1007/s40495-016-0076-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Glucuronidation is the most important phase II metabolic pathway which is responsible for the clearance of many endogenous and exogenous compounds. To better understand the elimination process for compounds undergoing glucuronidation and identify compounds with desirable in vivo pharmacokinetic properties, many efforts have been made to predict in vivo glucuronidation using in vitro data. In this article, we reviewed typical approaches used in previous predictions. The problems and challenges in prediction of glucuronidation were discussed. Besides that different incubation conditions can affect the prediction accuracy, other factors including efflux / uptake transporters, enterohepatic recycling, and deglucuronidation reactions also contribute to the disposition of glucuronides and make the prediction more difficult. PBPK modeling, which can describe more complicated process in vivo, is a promising prediction strategy which may greatly improve the prediction of glucuronidation and potential DDIs involving glucuronidation. Based on previous studies, we proposed a transport-glucuronidation classification system, which was built based on the kinetics of both glucuronidation and transport of the glucuronide. This system could be a very useful tool to achieve better in vivo predictions.
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Affiliation(s)
- Shufan Ge
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, The University of Houston, 1441 Moursund Street, Houston, TX, 77030, USA
| | - Yifan Tu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, The University of Houston, 1441 Moursund Street, Houston, TX, 77030, USA
| | - Ming Hu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, The University of Houston, 1441 Moursund Street, Houston, TX, 77030, USA
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Varma MV, El-Kattan AF. Transporter-Enzyme Interplay: Deconvoluting Effects of Hepatic Transporters and Enzymes on Drug Disposition Using Static and Dynamic Mechanistic Models. J Clin Pharmacol 2016; 56 Suppl 7:S99-S109. [DOI: 10.1002/jcph.695] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 12/14/2015] [Indexed: 01/09/2023]
Affiliation(s)
- Manthena V. Varma
- Pharmacokinetics; Dynamics and Metabolism; Worldwide Research and Development; Pfizer Inc; Groton CT USA
| | - Ayman F. El-Kattan
- Pharmacokinetics; Dynamics and Metabolism; Worldwide Research and Development; Pfizer Inc; Cambridge MA USA
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30
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Kimoto E, Li R, Scialis RJ, Lai Y, Varma MVS. Hepatic Disposition of Gemfibrozil and Its Major Metabolite Gemfibrozil 1-O-β-Glucuronide. Mol Pharm 2015; 12:3943-52. [DOI: 10.1021/acs.molpharmaceut.5b00411] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Emi Kimoto
- Department
of Pharmacokinetics, Dynamics, and Metabolism, Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Rui Li
- Systems
Modeling and Simulation, Department of Pharmacokinetics, Dynamics,
and Metabolism, Pfizer Worldwide Research and Development, Cambridge, Massachusetts, 02139, United States
| | - Renato J. Scialis
- Department
of Pharmacokinetics, Dynamics, and Metabolism, Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Yurong Lai
- Departments
of Metabolism and Pharmacokinetics, Bristol-Myers Squibb Research and Development, , Princeton, New Jersey 08540, United States
| | - Manthena V. S. Varma
- Department
of Pharmacokinetics, Dynamics, and Metabolism, Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
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31
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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: 309] [Impact Index Per Article: 34.3] [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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32
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Predicting Clearance Mechanism in Drug Discovery: Extended Clearance Classification System (ECCS). Pharm Res 2015; 32:3785-802. [DOI: 10.1007/s11095-015-1749-4] [Citation(s) in RCA: 148] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 06/29/2015] [Indexed: 12/15/2022]
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33
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Li R, Barton HA, Maurer TS. A Mechanistic Pharmacokinetic Model for Liver Transporter Substrates Under Liver Cirrhosis Conditions. CPT-PHARMACOMETRICS & SYSTEMS PHARMACOLOGY 2015. [PMID: 26225262 PMCID: PMC4505828 DOI: 10.1002/psp4.39] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Liver cirrhosis is a disease characterized by the loss of functional liver mass. Physiologically based pharmacokinetic (PBPK) modeling was applied to interpret and predict how the interplay among physiological changes in cirrhosis affects pharmacokinetics. However, previous PBPK models under cirrhotic conditions were developed for permeable cytochrome P450 substrates and do not directly apply to substrates of liver transporters. This study characterizes a PBPK model for liver transporter substrates in relation to the severity of liver cirrhosis. A published PBPK model structure for liver transporter substrates under healthy conditions and the physiological changes for cirrhosis are combined to simulate pharmacokinetics of liver transporter substrates in patients with mild and moderate cirrhosis. The simulated pharmacokinetics under liver cirrhosis reasonably approximate observations. This analysis includes meta-analysis to obtain system-dependent parameters in cirrhosis patients and a top-down approach to improve understanding of the effect of cirrhosis on transporter-mediated drug disposition under cirrhotic conditions.
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Affiliation(s)
- R Li
- Systems Modeling and Simulation, Department of Pharmacokinetics, Dynamics, and Metabolism, Pfizer Worldwide R&D Cambridge, Massachusetts, USA
| | - H A Barton
- Department of Pharmacokinetics, Dynamics, and Metabolism, Pfizer Worldwide R&D Groton, Connecticut, USA
| | - T S Maurer
- Systems Modeling and Simulation, Department of Pharmacokinetics, Dynamics, and Metabolism, Pfizer Worldwide R&D Cambridge, Massachusetts, USA
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Kim TH, Shin S, Landersdorfer CB, Chi YH, Paik SH, Myung J, Yadav R, Horkovics-Kovats S, Bulitta JB, Shin BS. Population Pharmacokinetic Modeling of the Enterohepatic Recirculation of Fimasartan in Rats, Dogs, and Humans. AAPS JOURNAL 2015; 17:1210-23. [PMID: 25990964 DOI: 10.1208/s12248-015-9764-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 03/30/2015] [Indexed: 11/30/2022]
Abstract
Enterohepatic recirculation (EHC) can greatly enhance plasma drug exposures and therapeutic effects. This study aimed to develop a population pharmacokinetic model that can simultaneously characterize the extent and time-course of EHC in three species using fimasartan, a novel angiotensin II receptor blocker, as a model drug. All fimasartan plasma concentration profiles in 32 rats (intravenous doses, 0.3-3 mg/kg; oral doses, 1-10 mg/kg), 34 dogs (intravenous doses, 0.3-1 mg/kg; oral doses, 1-10 mg/kg), and 42 healthy volunteers (single or multiple oral doses, 20-480 mg) were determined via liquid chromatography-tandem mass spectrometry (LC-MS/MS) and simultaneously modeled in S-ADAPT. The proposed model quantitatively characterized EHC in three species after oral and intravenous dosing. The median (range) fraction of drug undergoing recirculation was 76.3% (64.9-88.7%) in rats, 33.3% (24.0-45.9%) in dogs, and 65.6% (56.5-72.0%) in humans. In the presence compared with the absence of EHC, the area under the curve in plasma was predicted to be 4.22-fold (2.85-8.85) as high in rats, 1.50-fold (1.32-1.85) in dogs, and 2.91-fold (2.30-3.57) in humans. The modeled oral bioavailability in rats (median (range), 38.7% (20.0-59.8%)) and dogs (median, 7.13% to 15.4%, depending on the formulation) matched the non-compartmental estimates well. In humans, the predicted oral bioavailability was 25.1% (15.1-43.9%) under fasting and 18.2% (12.2-31.0%) under fed conditions. The allometrically scaled area under the curve predicted from rats was 420 ng·h/mL for 60 mg fimasartan compared with 424 ± 63 ng·h/mL observed in humans. The developed population pharmacokinetic model can be utilized to characterize the impact of EHC on plasma drug exposure in animals and humans.
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Affiliation(s)
- Tae Hwan Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea
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