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Liu R, Ma B, Mok MM, Murray BP, Subramanian R, Lai Y. Assessing Pleiotropic Effects of a Mixed-Mode Perpetrator Drug, Rifampicin, by Multiple Endogenous Biomarkers in Dogs. Drug Metab Dispos 2024; 52:236-241. [PMID: 38123963 DOI: 10.1124/dmd.123.001564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/21/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023] Open
Abstract
Rifampicin (RIF) is a mixed-mode perpetrator that produces pleiotropic effects on liver cytochrome P450 enzymes and drug transporters. To assess the complex drug-drug interaction liabilities of RIF in vivo, a known probe substrate, midazolam (MDZ), along with multiple endogenous biomarkers were simultaneously monitored in beagle dogs before and after a 7-day treatment period by RIF at 20 mg/kg per day. Confirmed by the reduced MDZ plasma exposure and elevated 4β-hydroxycholesterol (4β-HC, biomarker of CYP3A activities) level, CYP3A was significantly induced after repeated RIF doses, and such induction persisted for 3 days after cessation of the RIF administration. On the other hand, increased plasma levels of coproporphyrin (CP)-I and III [biomarkers of organic anion transporting polypeptides 1b (Oatp1b) activities] were observed after the first dose of RIF. Plasma CPs started to decline as RIF exposure decreased, and they returned to baseline 3 days after cessation of the RIF administration. The data suggested the acute (inhibitory) and chronic (inductive) effects of RIF on Oatp1b and CYP3A enzymes, respectively, and a 3-day washout period is deemed adequate to remove superimposed Oatp1b inhibition from CYP3A induction. In addition, apparent self-induction of RIF was observed as its terminal half-life was significantly altered after multiple doses. Overall, our investigation illustrated the need for appropriate timing of modulator dosing to differentiate between transporter inhibition and enzyme induction. As further indicated by the CP data, induction of Oatp1b activities was not likely after repeated RIF administration. SIGNIFICANCE STATEMENT: This investigation demonstrated the utility of endogenous biomarkers towards complex drug-drug interactions by rifampicin (RIF) and successfully determined the optimal timing to differentiate between transporter inhibition and enzyme induction. Based on experimental evidence, Oatp1b induction following repeated RIF administration was unlikely, and apparent self-induction of RIF elimination was observed.
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Affiliation(s)
- Renmeng Liu
- Drug Metabolism, Gilead Sciences Inc., Foster City, California
| | - Bin Ma
- Drug Metabolism, Gilead Sciences Inc., Foster City, California
| | - Marilyn M Mok
- Drug Metabolism, Gilead Sciences Inc., Foster City, California
| | | | | | - Yurong Lai
- Drug Metabolism, Gilead Sciences Inc., Foster City, California
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2
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Yoshida K, Doi Y, Iwazaki N, Yasuhara H, Ikenaga Y, Shimizu H, Nakada T, Watanabe T, Tateno C, Sanoh S, Kotake Y. Prediction of human pharmacokinetics for low-clearance compounds using pharmacokinetic data from chimeric mice with humanized livers. Clin Transl Sci 2021; 15:79-91. [PMID: 34080287 PMCID: PMC8742647 DOI: 10.1111/cts.13070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/02/2021] [Accepted: 04/28/2021] [Indexed: 11/25/2022] Open
Abstract
Development of low-clearance (CL) compounds that can be slowly metabolized is a major goal in the pharmaceutical industry. However, the pursuit of low intrinsic CL (CLint ) often leads to significant challenges in evaluating the pharmacokinetics of such compounds. Although in vitro-in vivo extrapolation is widely used to predict human CL, its application has been limited for low-CLint compounds because of the low turnover of parent compounds in metabolic stability assays. To address this issue, we focused on chimeric mice with humanized livers (PXB-mice), which have been increasingly reported to accurately predict human CL in recent years. The predictive accuracy for nine low-CLint compounds with no significant turnover in a human hepatocyte assay was investigated using PXB-mouse methods such as single-species allometric scaling (PXB-SSS) approach and a novel physiologically based scaling (PXB-PBS) approach that assumes that the CLint per hepatocyte is equal between humans and PXB-mice. The percentages of compounds with predicted CL within 2- and 3-fold ranges of the observed CL for low-CLint compounds were 89% and 100%, respectively, for both PXB-SSS and PXB-PBS approaches. Moreover, the predicted CL was mostly consistent among the methods. Conversely, percentages of compounds with predicted CL within 2- and 3-fold ranges of the observed CL for low-CLint compounds were 50% and 63%, respectively for multispecies allometric scaling (MA). Overall, these PXB-mouse methods were much more accurate than conventional MA approaches, suggesting that PXB-mice are useful tool for predicting the human CL of low-CLint compounds that are slowly metabolized.
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Affiliation(s)
- Kosuke Yoshida
- DMPK Research Laboratories, Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan.,Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuki Doi
- DMPK Research Laboratories, Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Norihiko Iwazaki
- DMPK Research Laboratories, Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Hidenori Yasuhara
- DMPK Research Laboratories, Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Yuka Ikenaga
- DMPK Research Laboratories, Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Hidetoshi Shimizu
- DMPK Research Laboratories, Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Tomohisa Nakada
- DMPK Research Laboratories, Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Tomoko Watanabe
- DMPK Research Laboratories, Sohyaku. Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Chise Tateno
- Research and Development Department, PhoenixBio Co., Ltd, Hiroshima, Japan
| | - Seigo Sanoh
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yaichiro Kotake
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Martinez MN, Mochel JP, Neuhoff S, Pade D. Comparison of Canine and Human Physiological Factors: Understanding Interspecies Differences that Impact Drug Pharmacokinetics. AAPS JOURNAL 2021; 23:59. [PMID: 33907906 DOI: 10.1208/s12248-021-00590-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 03/30/2021] [Indexed: 02/06/2023]
Abstract
This review is a summary of factors affecting the drug pharmacokinetics (PK) of dogs versus humans. Identifying these interspecies differences can facilitate canine-human PK extrapolations while providing mechanistic insights into species-specific drug in vivo behavior. Such a cross-cutting perspective can be particularly useful when developing therapeutics targeting diseases shared between the two species such as cancer, diabetes, cognitive dysfunction, and inflammatory bowel disease. Furthermore, recognizing these differences also supports a reverse PK extrapolations from humans to dogs. To appreciate the canine-human differences that can affect drug absorption, distribution, metabolism, and elimination, this review provides a comparison of the physiology, drug transporter/enzyme location, abundance, activity, and specificity between dogs and humans. Supplemental material provides an in-depth discussion of certain topics, offering additional critical points to consider. Based upon an assessment of available state-of-the-art information, data gaps were identified. The hope is that this manuscript will encourage the research needed to support an understanding of similarities and differences in human versus canine drug PK.
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Affiliation(s)
- Marilyn N Martinez
- Office of New Animal Drug Evaluation, Center for Veterinary Medicine, Food and Drug Administration, Rockville, Maryland, 20855, USA.
| | - Jonathan P Mochel
- SMART Pharmacology, Department of Biomedical Sciences, Iowa State University, Ames, Iowa, 50011, USA
| | - Sibylle Neuhoff
- Certara UK Limited, Simcyp Division, 1 Concourse Way, Sheffield, S1 2BJ, UK
| | - Devendra Pade
- Certara UK Limited, Simcyp Division, 1 Concourse Way, Sheffield, S1 2BJ, UK
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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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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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Martinez MN, Mochel JP, Pade D. Considerations in the extrapolation of drug toxicity between humans and dogs. CURRENT OPINION IN TOXICOLOGY 2020. [DOI: 10.1016/j.cotox.2020.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Diagnosing Microcystin Intoxication of Canines: Clinicopathological Indications, Pathological Characteristics, and Analytical Detection in Postmortem and Antemortem Samples. Toxins (Basel) 2019; 11:toxins11080456. [PMID: 31382600 PMCID: PMC6722975 DOI: 10.3390/toxins11080456] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/28/2019] [Accepted: 08/01/2019] [Indexed: 12/24/2022] Open
Abstract
In the summer of 2018, six dogs exposed to a harmful algal bloom (HAB) of Microcystis in Martin County Florida (USA) developed clinicopathological signs of microcystin (MC) intoxication (i.e., acute vomiting, diarrhea, severe thrombocytopenia, elevated alanine aminotransferase, hemorrhage). Successful supportive veterinary care was provided and led to survival of all but one patient. Confirmation of MC intoxication was made through interpretation of clinicopathological abnormalities, pathological examination of tissues, microscopy (vomitus), and analytical MC testing of antemortem/postmortem samples (vomitus, blood, urine, bile, liver, kidney, hair). Gross and microscopic examination of the deceased patient confirmed massive hepatic necrosis, mild multifocal renal tubular necrosis, and hemorrhage within multiple organ systems. Microscopy of a vomitus sample confirmed the presence of Microcystis. Three analytical MC testing approaches were used, including the MMPB (2-methyl-3-methoxy-4-phenylbutyric acid) technique, targeted congener analysis (e.g., liquid chromatography tandem-mass spectrometry of MC-LR), and enzyme-linked immunosorbent assay (ELISA). Total Adda MCs (as MMPB) were confirmed in the liver, bile, kidney, urine, and blood of the deceased dog. Urinalysis (MMPB) of one surviving dog showed a high level of MCs (32,000 ng mL−1) 1-day post exposure, with MCs detectable >2 months post exposure. Furthermore, hair from a surviving dog was positive for MMPB, illustrating another testable route of MC elimination in canines. The described cases represent the first use of urine as an antemortem, non-invasive specimen to diagnose microcystin toxicosis. Antemortem diagnostic testing to confirm MC intoxication cases, whether acute or chronic, is crucial for providing optimal supportive care and mitigating MC exposure.
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Kogame A, Moriya Y, Mori I, Pan L, Morohashi A, Ebihara T, Fukui H, Tagawa Y, Benet LZ. Characterization of Fasiglifam-Related Liver Toxicity in Dogs. Drug Metab Dispos 2019; 47:525-534. [PMID: 30765394 DOI: 10.1124/dmd.118.084889] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 02/07/2019] [Indexed: 11/22/2022] Open
Abstract
Fasiglifam, a potent and highly selective agonist of G protein-coupled receptor 40, was developed for the treatment of type 2 diabetes mellitus. However, phase III clinical programs were terminated owing to liver safety concerns. Fasiglifam-related liver toxicity was also observed in repeat-dose dog toxicology studies, characterized by granulomatous inflammation with crystal formation in the liver and/or bile ducts. These histopathological changes were not observed in rat toxicology studies. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry analysis of dog liver sections obtained from a repeat-dose toxicology study indicated that the crystalline material in the affected dog liver contained fasiglifam and fasiglifam glucuronide (fasiglifam-G). Nonclinical mechanistic studies indicated that after 14 days of repeated oral dosing with [14C]fasiglifam at 200 mg/kg per day to dogs, the concentrations of fasiglifam and fasiglifam-G in the bile exceeded the solubility limit of these compounds in the bile (approximately 3000 µg/ml). After single oral 2- and 200-mg/kg doses administered to rats and dogs, fasiglifam and fasiglifam-G concentrations in dog bile were 5- to 10-fold higher than those in rat bile for the same dose of fasiglifam, while the bile flow rate adjusted by body weight was 4- to 8-fold lower in dogs than in rats. High fasiglifam and fasiglifam-G concentrations in dog bile together with lower bile flow rate could cause crystal formation in dog bile, resulting in secondary granulomatous inflammation in the dog liver.
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Affiliation(s)
- Akifumi Kogame
- Drug Metabolism and Pharmacokinetics Research Laboratories (A.K., Y.M., A.M., T.E., Y.T.) and Drug Safety Research Laboratories (I.M., H.F.), Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Kanagawa, Japan; Takeda Development Center Americas, Inc., Deerfield, Illinois (L.P.); and Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California San Francisco, San Francisco, California (L.Z.B.)
| | - Yuu Moriya
- Drug Metabolism and Pharmacokinetics Research Laboratories (A.K., Y.M., A.M., T.E., Y.T.) and Drug Safety Research Laboratories (I.M., H.F.), Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Kanagawa, Japan; Takeda Development Center Americas, Inc., Deerfield, Illinois (L.P.); and Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California San Francisco, San Francisco, California (L.Z.B.)
| | - Ikuo Mori
- Drug Metabolism and Pharmacokinetics Research Laboratories (A.K., Y.M., A.M., T.E., Y.T.) and Drug Safety Research Laboratories (I.M., H.F.), Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Kanagawa, Japan; Takeda Development Center Americas, Inc., Deerfield, Illinois (L.P.); and Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California San Francisco, San Francisco, California (L.Z.B.)
| | - Liping Pan
- Drug Metabolism and Pharmacokinetics Research Laboratories (A.K., Y.M., A.M., T.E., Y.T.) and Drug Safety Research Laboratories (I.M., H.F.), Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Kanagawa, Japan; Takeda Development Center Americas, Inc., Deerfield, Illinois (L.P.); and Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California San Francisco, San Francisco, California (L.Z.B.)
| | - Akio Morohashi
- Drug Metabolism and Pharmacokinetics Research Laboratories (A.K., Y.M., A.M., T.E., Y.T.) and Drug Safety Research Laboratories (I.M., H.F.), Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Kanagawa, Japan; Takeda Development Center Americas, Inc., Deerfield, Illinois (L.P.); and Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California San Francisco, San Francisco, California (L.Z.B.)
| | - Takuya Ebihara
- Drug Metabolism and Pharmacokinetics Research Laboratories (A.K., Y.M., A.M., T.E., Y.T.) and Drug Safety Research Laboratories (I.M., H.F.), Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Kanagawa, Japan; Takeda Development Center Americas, Inc., Deerfield, Illinois (L.P.); and Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California San Francisco, San Francisco, California (L.Z.B.)
| | - Hideo Fukui
- Drug Metabolism and Pharmacokinetics Research Laboratories (A.K., Y.M., A.M., T.E., Y.T.) and Drug Safety Research Laboratories (I.M., H.F.), Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Kanagawa, Japan; Takeda Development Center Americas, Inc., Deerfield, Illinois (L.P.); and Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California San Francisco, San Francisco, California (L.Z.B.)
| | - Yoshihiko Tagawa
- Drug Metabolism and Pharmacokinetics Research Laboratories (A.K., Y.M., A.M., T.E., Y.T.) and Drug Safety Research Laboratories (I.M., H.F.), Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Kanagawa, Japan; Takeda Development Center Americas, Inc., Deerfield, Illinois (L.P.); and Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California San Francisco, San Francisco, California (L.Z.B.)
| | - Leslie Z Benet
- Drug Metabolism and Pharmacokinetics Research Laboratories (A.K., Y.M., A.M., T.E., Y.T.) and Drug Safety Research Laboratories (I.M., H.F.), Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Kanagawa, Japan; Takeda Development Center Americas, Inc., Deerfield, Illinois (L.P.); and Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California San Francisco, San Francisco, California (L.Z.B.)
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Matsunaga N, Ufuk A, Morse BL, Bedwell DW, Bao J, Mohutsky MA, Hillgren KM, Hall SD, Houston JB, Galetin A. Hepatic Organic Anion Transporting Polypeptide-Mediated Clearance in the Beagle Dog: Assessing In Vitro-In Vivo Relationships and Applying Cross-Species Empirical Scaling Factors to Improve Prediction of Human Clearance. Drug Metab Dispos 2018; 47:215-226. [PMID: 30593544 DOI: 10.1124/dmd.118.084194] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 12/17/2018] [Indexed: 02/06/2023] Open
Abstract
In the present study, the beagle dog was evaluated as a preclinical model to investigate organic anion transporting polypeptide (OATP)-mediated hepatic clearance. In vitro studies were performed with nine OATP substrates in three lots of plated male dog hepatocytes ± OATP inhibitor cocktail to determine total uptake clearance (CLuptake) and total and unbound cell-to-medium concentration ratio (Kpuu). In vivo intrinsic hepatic clearances (CLint,H) were determined following intravenous drug administration (0.1 mg/kg) in male beagle dogs. The in vitro parameters were compared with those previously reported in plated human, monkey, and rat hepatocytes; the ability of cross-species scaling factors to improve prediction of human in vivo clearance was assessed. CLuptake in dog hepatocytes ranged from 9.4 to 135 µl/min/106 cells for fexofenadine and telmisartan, respectively. Active process contributed >75% to CLuptake for 5/9 drugs. Rosuvastatin and valsartan showed Kpuu > 10, whereas cerivastatin, pitavastatin, repaglinide, and telmisartan had Kpuu < 5. The extent of hepatocellular binding in dog was consistent with other preclinical species and humans. The bias (2.73-fold) obtained from comparison of predicted versus in vivo dog CLint,H was applied as an average empirical scaling factor (ESFav) for in vitro-in vivo extrapolation of human CLint,H The ESFav based on dog reduced underprediction of human CLint,H for the same data set (geometric mean fold error = 2.1), highlighting its utility as a preclinical model to investigate OATP-mediated uptake. The ESFav from all preclinical species resulted in comparable improvement of human clearance prediction, in contrast to drug-specific empirical scalars, rationalized by species differences in expression and/or relative contribution of particular transporters to drug hepatic uptake.
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Affiliation(s)
- Norikazu Matsunaga
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
| | - Ayşe Ufuk
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
| | - Bridget L Morse
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
| | - David W Bedwell
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
| | - Jingqi Bao
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
| | - Michael A Mohutsky
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
| | - Kathleen M Hillgren
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
| | - Stephen D Hall
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
| | - J Brian Houston
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
| | - Aleksandra Galetin
- Centre for Applied Pharmacokinetic Research, University of Manchester, Manchester, United Kingdom (N.M., A.U., J.B.H., A.G.); Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Osaka, Japan (N.M.); and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana (B.L.M., D.W.B., J.B., M.A.M., K.M.H., S.D.H.)
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10
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Kotsampasakou E, Escher SE, Ecker GF. Linking organic anion transporting polypeptide 1B1 and 1B3 (OATP1B1 and OATP1B3) interaction profiles to hepatotoxicity - The hyperbilirubinemia use case. Eur J Pharm Sci 2017; 100:9-16. [PMID: 28063966 DOI: 10.1016/j.ejps.2017.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 11/26/2016] [Accepted: 01/02/2017] [Indexed: 02/07/2023]
Abstract
Hyperbilirubinemia is a pathological condition of excessive accumulation of conjugated or unconjugated bilirubin in blood. It has been associated with neurotoxicity and non-neural organ dysfunctions, while it can also be a warning of liver side effects. Hyperbilirubinemia can either be a result of overproduction of bilirubin due to hemolysis or dyserythropoiesis, or the outcome of impaired bilirubin elimination due to liver transporter malfunction or inhibition. There are several reports in literature that inhibition of organic anion transporting polypeptides 1B1 and 1B3 (OATP1B1 and OATP1B3) might lead to hyperbilirubinemia. In this study we created a set of classification models for hyperbilirubinemia, which, besides physicochemical descriptors, also include the output of classification models of human OATP1B1 and 1B3 inhibition. Models were based on either human data derived from public toxicity reports or animal data extracted from the eTOX database VITIC. The generated models showed satisfactory accuracy (68%) and area under the curve (AUC) for human data and 71% accuracy and 70% AUC for animal data. However, our results did not indicate strong association between OATP inhibition and hyperbilirubinemia, neither for humans nor for animals.
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Affiliation(s)
- Eleni Kotsampasakou
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse 14, 1090 Vienna, Austria
| | - Sylvia E Escher
- Fraunhofer Institute of Toxicology and Experimental Medicine (ITEM), Nikolai-Fuchs-Strasse 1, 30625 Hannover, Germany
| | - Gerhard F Ecker
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse 14, 1090 Vienna, Austria.
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Constant C, Hecht S, Craig LE, Lux CN, Cannon CM, Conklin GA. GADOXETATE DISODIUM (GD-EOB-DTPA) CONTRAST ENHANCED MAGNETIC RESONANCE IMAGING CHARACTERISTICS OF HEPATOCELLULAR CARCINOMA IN DOGS. Vet Radiol Ultrasound 2016; 57:594-600. [PMID: 27633531 DOI: 10.1111/vru.12419] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 07/28/2016] [Accepted: 07/29/2016] [Indexed: 12/11/2022] Open
Abstract
Hepatocellular carcinoma is the most common primary hepatic tumor in dogs and is amenable to surgical resection in many cases. Unfortunately, overlap of sonographic findings between benign and malignant hepatic lesions typically requires more invasive diagnostic tests to be performed (e.g., biopsy for histopathology). The availability of a noninvasive diagnostic test to identify hepatocellular carcinoma would be beneficial. The use of a liver-specific magnetic resonance imaging (MRI) contrast agent such as gadoxetate disodium (Gd-EOB-DTPA; Eovist® or Primovist®) has improved lesion detection in human patients. In this descriptive study, gadoxetate disodium contrast-enhanced MRI characteristics in dogs were evaluated in seven dogs (total of eight lesions). The imaging characteristics were variable with the exception of all lesions being hypointense to surrounding normal hepatic parenchyma on 3D T1-weighted gradient recalled echo images at all postcontrast time points. All lesions displayed signal intensity ratios less than 1, consistent with retained but impaired hepatocyte function. Hepatic lesions not identified on previous imaging were found in 3/7 patients which may affect surgical planning. In two patients, several hepatic nodules were identified during surgery which had not been visualized on MRI and were found to be benign on histopathology. This descriptive study reports the MRI characteristics of hepatocellular carcinoma in dogs using the liver-specific contrast agent gadoxetate disodium.
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Affiliation(s)
- Chase Constant
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, 37996-4542
| | - Silke Hecht
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, 37996-4542.
| | - Linden E Craig
- Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, 37996-4542
| | - Cassie N Lux
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, 37996-4542
| | - Claire M Cannon
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, 37996-4542
| | - Gordon A Conklin
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, 37996-4542
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12
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Bratton AK, Nykamp SG, Gibson TWG, Cruz-Arámbulo R, Kruth SA. Evaluation of hepatic contrast enhancement with a hepatocyte-specific magnetic resonance imaging contrast agent (gadoxetic acid) in healthy dogs. Am J Vet Res 2015; 76:224-30. [PMID: 25710758 DOI: 10.2460/ajvr.76.3.224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine, by means of MRI, the time to maximal contrast enhancement in T1-weighted images following IV administration of gadoxetic acid in healthy dogs and assess the impact of gadoxetic acid on the signal intensity of T2-weighted images. ANIMALS 7 healthy dogs. PROCEDURES No hepatic abnormalities were detected during ultrasonographic examination. Each dog was anesthetized and positioned in dorsal recumbency for MRI. Transverse T1- and T2-weighted images of the liver were acquired prior to and following (at 5-minute intervals) IV injection of 0.1 mL of gadoxetic acid/kg. Signal intensity of the liver parenchyma was measured in 3 regions of interest in the T1- and T2-weighted images before and at various times point after contrast agent administration. Time versus signal-to-noise ratio curves were plotted to determine time to maximal contrast enhancement and contrast agent-related changes in signal intensity in T2-weighted images. RESULTS Analysis of T1-weighted images revealed that mean ± SD time to maximal enhancement after gadoxetic acid injection was 10.5 ± 3.99 minutes. Signal intensity of T2-weighted images was not significantly affected by gadoxetic acid administration. No injection-related adverse effects were observed in any dog. CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that gadoxetic acid can be used for hepatic MRI in healthy dogs and the resultant hepatic enhancement patterns are similar to those described for humans. Maximal contrast enhancement occurred between 10 and 15 minutes after contrast agent injection; thus, T2-weighted images may be obtained in the interval between injection and maximal enhancement for a more time-efficient clinical protocol.
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Affiliation(s)
- Alexandra K Bratton
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, N1G 2W1, Canada
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13
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Chanteux H, Staelens L, Mancel V, Gerin B, Boucaut D, Prakash C, Nicolas JM. Cross-Species Differences in the Preclinical Pharmacokinetics of CT7758, an α4β1/α4β7 Integrin Antagonist. Drug Metab Dispos 2015; 43:1381-91. [PMID: 26153275 DOI: 10.1124/dmd.115.064436] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 07/07/2015] [Indexed: 12/17/2022] Open
Abstract
CT7758, a carboxylate containing α4β1/α4/β7 integrin antagonist, was characterized for its pharmacokinetic profile in various in vitro and in vivo assays in support of clinical development. The oral bioavailability of CT7758 was 4% in mice, 2% in rats, 7-55% in dogs, and 0.2% in cynomolgus monkeys. The low bioavailability in rodents and monkey results from low intestinal absorption as evidenced by a low fraction absorbed in the rat portal vein model (3%), low-to-medium permeability in Caco-2 cells (≤1.3 × 10(-6) cm/s) with evidences of polarized efflux, and high polar surface area (104 Å). In rodents and cynomolgus monkeys, the total plasma clearance was moderate to high (≥50% hepatic blood flow QH) and associated with a short elimination half-life (≤1 hour). This contrast with the dog data which showed a much lower clearance (6% QH) and a longer t1/2 (2.4 hours). The volume of distribution (Vz) also varied significantly across species with value of 5.5, 2.8, 0.24, and 0.93 l/kg in mouse, rat, dog, and cynomolgus monkey, respectively. In vitro assays demonstrated that active hepatic uptake accounted for most of the in vivo clearance and was the source of the large species variability. In vitro uptake assays predicted a total plasma clearance in humans in the low range (33% QH), a finding subsequently confirmed in the clinic. Assays in OAPT1B1-transfected cells demonstrated active uptake transport through this transporter. The prospect of limited absorption in human prompted the synthesis an ethyl ester prodrug, CDP323, which demonstrated higher in vitro permeability, increased oral bioavailability, as well as efficient in vivo release of its active moiety CT7758.
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Affiliation(s)
- Hugues Chanteux
- UCB Pharma SA, Investigative ADME (H.C., V.M., B.G.), Bioanalytical Sciences (L.S.), Laboratory Animal Services (D.B.), Braine l'Alleud, Belgium; Strategic DMPK Support, Braine l'Alleud, Belgium (J.M.N.); and Biogen Idec, Drug Metabolism and Pharmacokinetics, Biogen Idec, Cambridge, Massachusetts (C.P.)
| | - Ludovicus Staelens
- UCB Pharma SA, Investigative ADME (H.C., V.M., B.G.), Bioanalytical Sciences (L.S.), Laboratory Animal Services (D.B.), Braine l'Alleud, Belgium; Strategic DMPK Support, Braine l'Alleud, Belgium (J.M.N.); and Biogen Idec, Drug Metabolism and Pharmacokinetics, Biogen Idec, Cambridge, Massachusetts (C.P.)
| | - Valérie Mancel
- UCB Pharma SA, Investigative ADME (H.C., V.M., B.G.), Bioanalytical Sciences (L.S.), Laboratory Animal Services (D.B.), Braine l'Alleud, Belgium; Strategic DMPK Support, Braine l'Alleud, Belgium (J.M.N.); and Biogen Idec, Drug Metabolism and Pharmacokinetics, Biogen Idec, Cambridge, Massachusetts (C.P.)
| | - Brigitte Gerin
- UCB Pharma SA, Investigative ADME (H.C., V.M., B.G.), Bioanalytical Sciences (L.S.), Laboratory Animal Services (D.B.), Braine l'Alleud, Belgium; Strategic DMPK Support, Braine l'Alleud, Belgium (J.M.N.); and Biogen Idec, Drug Metabolism and Pharmacokinetics, Biogen Idec, Cambridge, Massachusetts (C.P.)
| | - David Boucaut
- UCB Pharma SA, Investigative ADME (H.C., V.M., B.G.), Bioanalytical Sciences (L.S.), Laboratory Animal Services (D.B.), Braine l'Alleud, Belgium; Strategic DMPK Support, Braine l'Alleud, Belgium (J.M.N.); and Biogen Idec, Drug Metabolism and Pharmacokinetics, Biogen Idec, Cambridge, Massachusetts (C.P.)
| | - Chandra Prakash
- UCB Pharma SA, Investigative ADME (H.C., V.M., B.G.), Bioanalytical Sciences (L.S.), Laboratory Animal Services (D.B.), Braine l'Alleud, Belgium; Strategic DMPK Support, Braine l'Alleud, Belgium (J.M.N.); and Biogen Idec, Drug Metabolism and Pharmacokinetics, Biogen Idec, Cambridge, Massachusetts (C.P.)
| | - Jean-Marie Nicolas
- UCB Pharma SA, Investigative ADME (H.C., V.M., B.G.), Bioanalytical Sciences (L.S.), Laboratory Animal Services (D.B.), Braine l'Alleud, Belgium; Strategic DMPK Support, Braine l'Alleud, Belgium (J.M.N.); and Biogen Idec, Drug Metabolism and Pharmacokinetics, Biogen Idec, Cambridge, Massachusetts (C.P.)
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14
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Soars MG, Barton P, Elkin LL, Mosure KW, Sproston JL, Riley RJ. Application of anin vitroOAT assay in drug design and optimization of renal clearance. Xenobiotica 2014; 44:657-65. [DOI: 10.3109/00498254.2013.879625] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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15
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Atienzar FA, Novik EI, Gerets HH, Parekh A, Delatour C, Cardenas A, MacDonald J, Yarmush ML, Dhalluin S. Predictivity of dog co-culture model, primary human hepatocytes and HepG2 cells for the detection of hepatotoxic drugs in humans. Toxicol Appl Pharmacol 2013; 275:44-61. [PMID: 24333257 DOI: 10.1016/j.taap.2013.11.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/20/2013] [Accepted: 11/27/2013] [Indexed: 12/19/2022]
Abstract
Drug induced liver injury (DILI) is a major cause of attrition during early and late stage drug development. Consequently, there is a need to develop better in vitro primary hepatocyte models from different species for predicting hepatotoxicity in both animals and humans early in drug development. Dog is often chosen as the non-rodent species for toxicology studies. Unfortunately, dog in vitro models allowing long term cultures are not available. The objective of the present manuscript is to describe the development of a co-culture dog model for predicting hepatotoxic drugs in humans and to compare the predictivity of the canine model along with primary human hepatocytes and HepG2 cells. After rigorous optimization, the dog co-culture model displayed metabolic capacities that were maintained up to 2 weeks which indicates that such model could be also used for long term metabolism studies. Most of the human hepatotoxic drugs were detected with a sensitivity of approximately 80% (n=40) for the three cellular models. Nevertheless, the specificity was low approximately 40% for the HepG2 cells and hepatocytes compared to 72.7% for the canine model (n=11). Furthermore, the dog co-culture model showed a higher superiority for the classification of 5 pairs of close structural analogs with different DILI concerns in comparison to both human cellular models. Finally, the reproducibility of the canine system was also satisfactory with a coefficient of correlation of 75.2% (n=14). Overall, the present manuscript indicates that the dog co-culture model may represent a relevant tool to perform chronic hepatotoxicity and metabolism studies.
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Affiliation(s)
- Franck A Atienzar
- UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium.
| | - Eric I Novik
- Hμrel Corporation, 675 U.S. Highway 1, North Brunswick, NJ 08902, USA
| | - Helga H Gerets
- UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium
| | - Amit Parekh
- Hμrel Corporation, 675 U.S. Highway 1, North Brunswick, NJ 08902, USA
| | - Claude Delatour
- UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium
| | - Alvaro Cardenas
- UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium
| | - James MacDonald
- Chrysalis Pharma Consulting, LLC, 385 Route 24, Suite 1G, Chester, NJ 07930, USA
| | - Martin L Yarmush
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ 08854, USA
| | - Stéphane Dhalluin
- UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium
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Di L, Atkinson K, Orozco CC, Funk C, Zhang H, McDonald TS, Tan B, Lin J, Chang C, Obach RS. In vitro-in vivo correlation for low-clearance compounds using hepatocyte relay method. Drug Metab Dispos 2013; 41:2018-23. [PMID: 23857891 DOI: 10.1124/dmd.113.053322] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
In vitro-in vivo correlation (IVIVC) of intrinsic clearance in preclinical species of rat and dog was established using the hepatocyte relay method to support high-confidence prediction of human pharmacokinetics for low-clearance compounds. Good IVIVC of intrinsic clearance was observed for most of the compounds, with predicted values within 2-fold of the observed values. The exceptions involved transporter-mediated uptake clearance or metabolizing enzymes with extensive extrahepatic contribution. This is the first assay available to address low clearance challenges in preclinical species for IVIVC in drug discovery. It extends the utility of the hepatocyte relay method in addressing low clearance issues.
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Affiliation(s)
- Li Di
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Inc., Groton, Connecticut
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17
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Yoshida K, Maeda K, Sugiyama Y. Hepatic and Intestinal Drug Transporters: Prediction of Pharmacokinetic Effects Caused by Drug-Drug Interactions and Genetic Polymorphisms. Annu Rev Pharmacol Toxicol 2013; 53:581-612. [DOI: 10.1146/annurev-pharmtox-011112-140309] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kenta Yoshida
- Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan; ,
| | - Kazuya Maeda
- Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan; ,
| | - Yuichi Sugiyama
- Sugiyama Laboratory, RIKEN Innovation Center, RIKEN Research Cluster for Innovation, Yokohama 230-0045, Japan;
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Chu X, Bleasby K, Evers R. Species differences in drug transporters and implications for translating preclinical findings to humans. Expert Opin Drug Metab Toxicol 2012; 9:237-52. [DOI: 10.1517/17425255.2013.741589] [Citation(s) in RCA: 208] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Grime K, Paine SW. Species Differences in Biliary Clearance and Possible Relevance of Hepatic Uptake and Efflux Transporters Involvement. Drug Metab Dispos 2012; 41:372-8. [DOI: 10.1124/dmd.112.049312] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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20
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Keogh JP. Membrane transporters in drug development. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2012; 63:1-42. [PMID: 22776638 DOI: 10.1016/b978-0-12-398339-8.00001-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Membrane transporters have wide, but specific tissue distributions. They can impact on multiple endogenous and xenobiotic processes. Knowledge and awareness within the pharmaceutical industry of their impact on drug absorption, distribution, metabolism and elimination (ADME) and drug safety is growing rapidly. Clinically important transporter-mediated drug-drug interactions (DDIs) have been observed. Up to nine diverse transporters are implicated in the DDIs of a number of widely prescribed drugs, posing a significant challenge to the pharmaceutical industry. There is a complex interplay between multiple transporters and/or enzymes in the ADME and pharmacogenomics of drugs. Integrating these different mechanisms to understand their relative contributions to ADME is a key challenge. Many different factors complicate the study of membrane transporters in drug development. These include a lack of specific substrates and inhibitors, non-standard in vitro tools, and competing/complementary mechanisms (e.g. passive permeability and metabolism). Discovering and contextualizing the contribution of membrane transporters to drug toxicity is a significant new challenge. Drug interactions with key membrane transporters are routinely assessed for central nervous system (CNS) drug discovery therapies, but are not generally considered across the wider drug discovery. But, there is interest in utilizing membrane transporters as drug delivery agents. Computational modeling approaches, notably physiology-based/pharmacokinetic (PB/PK) modeling are increasingly applied to transporter interactions, and permit integration of multiple ADME mechanisms. Because of the range of tissues and transporters of interest, robust transporter, in vitro to in vivo, scaling factors are required. Empirical factors have been applied, but absolute protein quantitation will probably be required.
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