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Liu S, Kosugi Y. Human Brain Penetration Prediction Using Scaling Approach from Animal Machine Learning Models. AAPS J 2023; 25:86. [PMID: 37667061 DOI: 10.1208/s12248-023-00850-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 08/14/2023] [Indexed: 09/06/2023] Open
Abstract
Machine learning (ML) approaches have been applied to predicting drug pharmacokinetic properties. Previously, we predicted rat unbound brain-to-plasma ratio (Kpuu,brain) by ML models. In this study, we aimed to predict human Kpuu,brain through animal ML models. First, we re-evaluated ML models for rat Kpuu,brain prediction by using trendy open-source packages. We then developed ML models for monkey Kpuu,brain prediction. Leave-one-out cross validation was utilized to rationally build models using a relatively small dataset. After establishing the monkey and rat ML models, human Kpuu,brain prediction was achieved by implementing the animal models considering appropriate scaling methods. Mechanistic NeuroPK models for the identical monkey and human dataset were treated as the criteria for comparison. Results showed that rat Kpuu,brain predictivity was successfully replicated. The optimal ML model for monkey Kpuu,brain prediction was superior to the NeuroPK model, where accuracy within 2-fold error was 78% (R2 = 0.76). For human Kpuu,brain prediction, rat model using relative expression factor (REF), scaled transporter efflux ratios (ERs), and monkey model using in vitro ERs can provide comparable predictivity to the NeuroPK model, where accuracy within 2-fold error was 71% and 64% (R2 = 0.30 and 0.52), respectively. We demonstrated that ML models can deliver promising Kpuu,brain prediction with several advantages: (1) predict reasonable animal Kpuu,brain; (2) prospectively predict human Kpuu,brain from animal models; and (3) can skip expensive monkey studies for human prediction by using the rat model. As a result, ML models can be a powerful tool for drug Kpuu,brain prediction in the discovery stage.
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Affiliation(s)
- Siyu Liu
- Drug Metabolism & Pharmacokinetics Research Laboratories, Preclinical & Translational Sciences, Research, Takeda Pharmaceutical Company Limited, Shonan Health Innovation Park, 26-1, Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan.
| | - Yohei Kosugi
- Drug Metabolism & Pharmacokinetics Research Laboratories, Preclinical & Translational Sciences, Research, Takeda Pharmaceutical Company Limited, Shonan Health Innovation Park, 26-1, Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan
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2
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Goutal S, Novell A, Leterrier S, Breuil L, Selingue E, Gerstenmayer M, Marie S, Saubaméa B, Caillé F, Langer O, Truillet C, Larrat B, Tournier N. Imaging the impact of blood-brain barrier disruption induced by focused ultrasound on P-glycoprotein function. J Control Release 2023; 361:483-492. [PMID: 37562557 DOI: 10.1016/j.jconrel.2023.08.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/27/2023] [Accepted: 08/07/2023] [Indexed: 08/12/2023]
Abstract
The P-glycoprotein (P-gp/ABCB1) is a major efflux transporter which impedes the brain delivery of many drugs across the blood-brain barrier (BBB). Focused ultrasound with microbubbles (FUS) enables BBB disruption, which immediate and delayed impact on P-gp function remains unclear. Positron emission tomography (PET) imaging using the radiolabeled substrate [11C]metoclopramide provides a sensitive and translational method to study P-gp function at the living BBB. A FUS protocol was devised in rats to induce a substantial and targeted disruption of the BBB in the left hemisphere. BBB disruption was confirmed by the Evan's Blue extravasation test or the minimally-invasive contrast-enhanced MRI. The expression of P-gp was measured 24 h or 48 h after FUS using immunostaining and fluorescence microscopy. The brain kinetics of [11C]metoclopramide was studied by PET at baseline, and both immediately or 24 h after FUS, with or without half-maximum P-gp inhibition (tariquidar 1 mg/kg). In each condition (n = 4-5 rats per group), brain exposure of [11C]metoclopramide was estimated as the area-under-the-curve (AUC) in regions corresponding to the sonicated volume in the left hemisphere, and the contralateral volume. Kinetic modeling was performed to estimate the uptake clearance ratio (R1) of [11C]metoclopramide in the sonicated volume relative to the contralateral volume. In the absence of FUS, half-maximum P-gp inhibition increased brain exposure (+135.0 ± 12.9%, p < 0.05) but did not impact R1 (p > 0.05). Immediately after FUS, BBB integrity was selectively disrupted in the left hemisphere without any detectable impact on the brain kinetics of [11C]metoclopramide compared with the baseline group (p > 0.05) or the contralateral volume (p > 0.05). 24 h after FUS, BBB integrity was fully restored while P-gp expression was maximally down-regulated (-45.0 ± 4.5%, p < 0.001) in the sonicated volume. This neither impacted AUC nor R1 in the FUS + 24 h group (p > 0.05). Only when P-gp was inhibited with tariquidar were the brain exposure (+130 ± 70%) and R1(+29.1 ± 15.4%) significantly increased in the FUS + 24 h/tariquidar group, relative to the baseline group (p < 0.001). We conclude that the brain kinetics of [11C]metoclopramide specifically depends on P-gp function rather than BBB integrity. Delayed FUS-induced down-regulation of P-gp function can be detected. Our results suggest that almost complete down-regulation is required to substantially enhance the brain delivery of P-gp substrates.
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Affiliation(s)
- Sébastien Goutal
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Anthony Novell
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Sarah Leterrier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Louise Breuil
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France; Université Paris Cité, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France
| | - Erwan Selingue
- Neurospin, Institut Joliot, Direction de la Recherche Fondamentale, CEA, Université Paris Saclay, Gif sur Yvette, France
| | - Matthieu Gerstenmayer
- Neurospin, Institut Joliot, Direction de la Recherche Fondamentale, CEA, Université Paris Saclay, Gif sur Yvette, France
| | - Solène Marie
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Bruno Saubaméa
- Université Paris Cité, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France
| | - Fabien Caillé
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Charles Truillet
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Benoît Larrat
- Neurospin, Institut Joliot, Direction de la Recherche Fondamentale, CEA, Université Paris Saclay, Gif sur Yvette, France
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France.
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Schulz JA, Hartz AMS, Bauer B. ABCB1 and ABCG2 Regulation at the Blood-Brain Barrier: Potential New Targets to Improve Brain Drug Delivery. Pharmacol Rev 2023; 75:815-853. [PMID: 36973040 PMCID: PMC10441638 DOI: 10.1124/pharmrev.120.000025] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 03/10/2023] [Accepted: 03/10/2023] [Indexed: 03/29/2023] Open
Abstract
The drug efflux transporters ABCB1 and ABCG2 at the blood-brain barrier limit the delivery of drugs into the brain. Strategies to overcome ABCB1/ABCG2 have been largely unsuccessful, which poses a tremendous clinical problem to successfully treat central nervous system (CNS) diseases. Understanding basic transporter biology, including intracellular regulation mechanisms that control these transporters, is critical to solving this clinical problem.In this comprehensive review, we summarize current knowledge on signaling pathways that regulate ABCB1/ABCG2 at the blood-brain barrier. In Section I, we give a historical overview on blood-brain barrier research and introduce the role that ABCB1 and ABCG2 play in this context. In Section II, we summarize the most important strategies that have been tested to overcome the ABCB1/ABCG2 efflux system at the blood-brain barrier. In Section III, the main component of this review, we provide detailed information on the signaling pathways that have been identified to control ABCB1/ABCG2 at the blood-brain barrier and their potential clinical relevance. This is followed by Section IV, where we explain the clinical implications of ABCB1/ABCG2 regulation in the context of CNS disease. Lastly, in Section V, we conclude by highlighting examples of how transporter regulation could be targeted for therapeutic purposes in the clinic. SIGNIFICANCE STATEMENT: The ABCB1/ABCG2 drug efflux system at the blood-brain barrier poses a significant problem to successful drug delivery to the brain. The article reviews signaling pathways that regulate blood-brain barrier ABCB1/ABCG2 and could potentially be targeted for therapeutic purposes.
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Affiliation(s)
- Julia A Schulz
- Department of Pharmaceutical Sciences, College of Pharmacy (J.A.S., B.B.), Sanders-Brown Center on Aging and Department of Pharmacology and Nutritional Sciences, College of Medicine (A.M.S.H.), University of Kentucky, Lexington, Kentucky
| | - Anika M S Hartz
- Department of Pharmaceutical Sciences, College of Pharmacy (J.A.S., B.B.), Sanders-Brown Center on Aging and Department of Pharmacology and Nutritional Sciences, College of Medicine (A.M.S.H.), University of Kentucky, Lexington, Kentucky
| | - Björn Bauer
- Department of Pharmaceutical Sciences, College of Pharmacy (J.A.S., B.B.), Sanders-Brown Center on Aging and Department of Pharmacology and Nutritional Sciences, College of Medicine (A.M.S.H.), University of Kentucky, Lexington, Kentucky
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4
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Chatterjee S, Deshpande AA, Shen H. Recent advances in the in vitro and in vivo methods to assess impact of P-glycoprotein and breast cancer resistance protein transporters in central nervous system drug disposition. Biopharm Drug Dispos 2023; 44:7-25. [PMID: 36692150 DOI: 10.1002/bdd.2345] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/04/2022] [Accepted: 12/08/2022] [Indexed: 01/25/2023]
Abstract
One challenge in central nervous system (CNS) drug discovery has been ensuring the blood-brain barrier (BBB) penetration of compounds at an efficacious concentration that provides suitable safety margins for clinical investigation. Research providing for the accurate prediction of brain penetration of compounds during preclinical discovery is important to a CNS program. In the BBB, P-glycoprotein (P-gp) (ABCB1) and breast cancer resistance protein (BCRP) (ABCG2) transporters have been demonstrated to play a major role in the active efflux of endogenous compounds and xenobiotics out of the brain microvessel cells and back to the systemic circulation. In the past 10 years, there has been significant technological improvement in the sensitivity of quantitative proteomics methods, in vivo imaging, in vitro methods of organoid and microphysiological systems, as well as in silico quantitative physiological based pharmacokinetic and systems pharmacology models. Scientists continually leverage these advancements to interrogate the distribution of compounds in the CNS which may also show signals of substrate specificity of P-gp and/or BCRP. These methods have shown promise toward predicting and quantifying the unbound concentration(s) within the brain relevant for efficacy or safety. In this review, the authors have summarized the in vivo, in vitro, and proteomics advancements toward understanding the contribution of P-gp and/or BCRP in restricting the entry of compounds to the CNS of either healthy or special populations. Special emphasis has been provided on recent investigations on the application of a proteomics-informed approach to predict steady-state drug concentrations in the brain. Moreover, future perspectives regarding the role of these transporters in newer modalities are discussed.
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Affiliation(s)
- Sagnik Chatterjee
- Drug Metabolism and Pharmacokinetics, Ferring Pharmaceuticals A/S, Kastrup, Denmark
| | - Anup Arunrao Deshpande
- Drug Metabolism and Pharmacokinetics, Biocon Bristol Myers Squibb R&D Centre (BBRC), Syngene International Ltd, Bangalore, India
| | - Hong Shen
- Drug Metabolism and Pharmacokinetics, Bristol Myers Squibb Company, Princeton, New Jersey, USA
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5
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Cox B, Nicolaï J, Williamson B. The role of the efflux transporter, P-glycoprotein, at the blood-brain barrier in drug discovery. Biopharm Drug Dispos 2023; 44:113-126. [PMID: 36198662 DOI: 10.1002/bdd.2331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 11/08/2022]
Abstract
The blood-brain barrier (BBB) expresses a high abundance of transporters, particularly P-glycoprotein (P-gp), that regulate endogenous and exogenous molecule uptake and removal of waste. This review discusses key drug metabolism and pharmacokinetic considerations for the efflux transporter P-gp at the BBB in drug discovery and development. We highlight the differences in P-gp expression and protein levels across species but the limited observations of species-specific substrates. Given the impact of age and disease on BBB biology, we summarise the modulation of P-gp for several neurological disorders and ageing and exemplify several disease-specific hurdles or opportunities for drug exposure in the brain. Furthermore, the review includes observations of CNS-related drug-drug interactions due to the inhibition or induction of P-gp at the BBB in animal studies and humans and the need for continued evaluation especially for compounds with a narrow therapeutic window. This review focusses primarily on small molecules but also considers the impact of new chemical entities, particularly beyond Ro5 molecules and their potential to be recognised as P-gp substrates as well as advanced drug delivery systems which offer an alternative approach to achieve and sustain central nervous system exposure.
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Affiliation(s)
- Benoit Cox
- DMPK, Development Sciences, UCB Biopharma, Braine-l'Alleud, Belgium
| | - Johan Nicolaï
- DMPK, Janssen Pharmaceutical Companies of Johnson & Johnson, Janssen Research & Development, Beerse, Belgium
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Yamasaki Y, Moriwaki T, Ogata S, Ito S, Ohtsuki S, Minegishi G, Abe S, Ohta Y, Kazuki K, Kobayashi K, Kazuki Y. Influence of MDR1 gene polymorphism (2677G>T) on expression and function of P-glycoprotein at the blood-brain barrier: utilizing novel P-glycoprotein humanized mice with mutation. Pharmacogenet Genomics 2022; 32:288-292. [PMID: 35997049 DOI: 10.1097/fpc.0000000000000481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
P-glycoprotein, the encoded product of the MDR1 / ABCB1 gene in humans, is expressed in numerous tissues including brain capillary endothelial cells and restricts the distribution of xenobiotics into the brain as an efflux pump. Although a large number of single nucleotide polymorphisms in the MDR1 gene have been identified, the influence of the nonsynonymous 2677G>T/A single nucleotide polymorphism on P-glycoprotein at the blood-brain barrier has remained unclear. In the present study, we developed a novel P-glycoprotein humanized mouse line carrying the 2677G>T mutation by utilizing a mouse artificial chromosome vector constructed by genetic engineering technology and we evaluated the influence of 2677G>T on the expression and function of P-glycoprotein at the blood-brain barrier in vivo . The results of this study showed that the introduction of the 2677G>T mutation does not alter the expression levels of P-glycoprotein protein in the brain capillary fraction. On the other hand, the brain penetration of verapamil, a representative substrate of P-glycoprotein, was increased by the introduction of the 2677G>T mutation. These results suggested that the 2677G>T single nucleotide polymorphism may attenuate the function of P-glycoprotein, resulting in increased brain penetration of P-glycoprotein substrates, without altering the expression levels of P-glycoprotein protein in the blood-brain barrier. This mutant mouse line is a useful model for elucidating the influence of an MDR1 gene single nucleotide polymorphism on the expression and function of P-glycoprotein at the blood-brain barrier.
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Affiliation(s)
- Yuki Yamasaki
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba
| | - Takashi Moriwaki
- Department of Chromosome Biomedical Engineering, School of Life Science, Faculty of Medicine, Tottori University
| | - Seiryo Ogata
- Graduate School of Pharmaceutical Sciences, Kumamoto University
| | - Shingo Ito
- Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto
| | - Sumio Ohtsuki
- Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto
| | - Genki Minegishi
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba
- Department of Biopharmaceutics, Graduate School of Clinical Pharmacy, Meiji Pharmaceutical University, Tokyo
| | - Satoshi Abe
- Chromosome Engineering Research Center, Tottori University, Tottori, Japan
| | - Yumi Ohta
- Department of Chromosome Biomedical Engineering, School of Life Science, Faculty of Medicine, Tottori University
| | - Kanako Kazuki
- Chromosome Engineering Research Center, Tottori University, Tottori, Japan
| | - Kaoru Kobayashi
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba
- Department of Biopharmaceutics, Graduate School of Clinical Pharmacy, Meiji Pharmaceutical University, Tokyo
| | - Yasuhiro Kazuki
- Department of Chromosome Biomedical Engineering, School of Life Science, Faculty of Medicine, Tottori University
- Chromosome Engineering Research Center, Tottori University, Tottori, Japan
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Loryan I, Reichel A, Feng B, Bundgaard C, Shaffer C, Kalvass C, Bednarczyk D, Morrison D, Lesuisse D, Hoppe E, Terstappen GC, Fischer H, Di L, Colclough N, Summerfield S, Buckley ST, Maurer TS, Fridén M. Unbound Brain-to-Plasma Partition Coefficient, K p,uu,brain-a Game Changing Parameter for CNS Drug Discovery and Development. Pharm Res 2022; 39:1321-1341. [PMID: 35411506 PMCID: PMC9246790 DOI: 10.1007/s11095-022-03246-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/22/2022] [Indexed: 12/11/2022]
Abstract
PURPOSE More than 15 years have passed since the first description of the unbound brain-to-plasma partition coefficient (Kp,uu,brain) by Prof. Margareta Hammarlund-Udenaes, which was enabled by advancements in experimental methodologies including cerebral microdialysis. Since then, growing knowledge and data continue to support the notion that the unbound (free) concentration of a drug at the site of action, such as the brain, is the driving force for pharmacological responses. Towards this end, Kp,uu,brain is the key parameter to obtain unbound brain concentrations from unbound plasma concentrations. METHODS To understand the importance and impact of the Kp,uu,brain concept in contemporary drug discovery and development, a survey has been conducted amongst major pharmaceutical companies based in Europe and the USA. Here, we present the results from this survey which consisted of 47 questions addressing: 1) Background information of the companies, 2) Implementation, 3) Application areas, 4) Methodology, 5) Impact and 6) Future perspectives. RESULTS AND CONCLUSIONS From the responses, it is clear that the majority of the companies (93%) has established a common understanding across disciplines of the concept and utility of Kp,uu,brain as compared to other parameters related to brain exposure. Adoption of the Kp,uu,brain concept has been mainly driven by individual scientists advocating its application in the various companies rather than by a top-down approach. Remarkably, 79% of all responders describe the portfolio impact of Kp,uu,brain implementation in their companies as 'game-changing'. Although most companies (74%) consider the current toolbox for Kp,uu,brain assessment and its validation satisfactory for drug discovery and early development, areas of improvement and future research to better understand human brain pharmacokinetics/pharmacodynamics translation have been identified.
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Affiliation(s)
- Irena Loryan
- Department of Pharmacy, Uppsala University, Box 580, Uppsala, Sweden.
| | | | - Bo Feng
- DMPK, Vertex Pharmaceuticals, Boston, Massachusetts, 02210, USA
| | | | - Christopher Shaffer
- External Innovation, Research & Development, Biogen Inc., Cambridge, Massachusetts, USA
| | - Cory Kalvass
- DMPK-BA, AbbVie, Inc., North Chicago, Illinois, USA
| | - Dallas Bednarczyk
- Pharmacokinetic Sciences, Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, USA
| | | | | | - Edmund Hoppe
- DMPK, Boehringer-Ingelheim Pharma GmbH & Co. KG, Biberach, Germany
| | | | - Holger Fischer
- Translational PK/PD and Clinical Pharmacology, Pharmaceutical Sciences, Roche Pharma Research & Early Development, Roche Innovation Center Basel, Basel, Switzerland
| | - Li Di
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Groton, Connecticut, USA
| | | | - Scott Summerfield
- Bioanalysis Immunogenicity and Biomarkers, GSK, Gunnels Wood Road, Stevenage, SG1 2NY, Hertfordshire, UK
| | | | - Tristan S Maurer
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Cambridge, Massachusetts, USA
| | - Markus Fridén
- Department of Pharmacy, Uppsala University, Box 580, Uppsala, Sweden
- Inhalation Product Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Gothenburg, Sweden
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Regional Differences in the Absolute Abundance of Transporters, Receptors and Tight Junction Molecules at the Blood-Arachnoid Barrier and Blood-Spinal Cord Barrier among Cervical, Thoracic and Lumbar Spines in Dogs. Pharm Res 2022; 39:1393-1413. [PMID: 35488144 DOI: 10.1007/s11095-022-03275-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 04/25/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE The purpose of the present study was to quantitatively determine the expression of transporters, receptors and tight junction molecules at the blood-arachnoid barrier (BAB) and blood-spinal cord barrier (BSCB) in cervical, thoracic and lumbar spines from dogs. METHODS The expression levels of 31 transporters, 3 receptors, 1 tight junction protein, and 3 marker proteins in leptomeninges and capillaries isolated from spines (3 male and 2 female dogs) were determined by quantitative Targeted Absolute Proteomics (qTAP). The units were converted from fmol/μg protein to pmol/cm (absolute abundance at the BAB and the BSCB in a 1 cm section of spine). RESULTS The expression of MDR1 and BCRP were greater at the BSCB compared to the BAB (especially in the cervical cord), and the expressions at the lumbar BSCB were lower than that for the cervical BSCB. Among the organic anionic and cationic drug transporters, OAT1, OAT3, MRP1, OCT2 and MATE1/2 were detected only in the BAB, and not at the BSCB). The expression of these transporters was higher in the order: lumbar > thoracic > cervical BAB. The expressions of GLUT1, 4F2hc, EAAT1, 2, PEPT2, CTL1, and MCT1 at the BSCB of the cervical cord were higher than the corresponding values for the cervical BAB, and these values decreased in going down the spinal cord. CONCLUSION These results provide a better understanding of the molecular mechanisms underlying the concentration gradients of drugs and endogenous substances in the cerebrospinal fluid and parenchyma of the spinal cord.
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Construction and Functional Evaluation of a Three-Dimensional Blood–Brain Barrier Model Equipped With Human Induced Pluripotent Stem Cell-Derived Brain Microvascular Endothelial Cells. Pharm Res 2022; 39:1535-1547. [PMID: 35411503 PMCID: PMC9246774 DOI: 10.1007/s11095-022-03249-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 03/29/2022] [Indexed: 12/28/2022]
Abstract
Abstract
Purpose
The purpose of this study was to construct and validate an in vivo three-dimensional blood–brain barrier (3D-BBB) model system equipped with brain microvascular endothelial cells derived from human induced pluripotent stem cells (hiPS-BMECs).
Methods
The 3D-BBB system was constructed by seeding hiPS-BMECs onto the capillary lane of a MIMETAS OrganoPlate® 3-lane coated with fibronectin/collagen IV. hiPS-BMECs were incubated under continuous switchback flow with an OrganoFlow® for 2 days. The 3D capillary structure and expression of tight-junction proteins and transporters were confirmed by immunocytochemistry. The mRNA expression of transporters in the 3D environment was determined using qRT-PCR, and the permeability of endogenous substances and drugs was evaluated under various conditions.
Results and Discussion
The expression of tight-junction proteins, including claudin-5 and ZO-1, was confirmed by immunohistochemistry. The permeability rate constant of lucifer yellow through hiPS-BMECs was undetectably low, indicating that paracellular transport is highly restricted by tight junctions in the 3D-BBB system. The mRNA expression levels of transporters and receptors in the 3D-BBB system differed from those in the 2D-culture system by 0.2- to 5.8-fold. The 3D-cultured hiPS-BMECs showed asymmetric transport of substrates of BCRP, CAT1 and LAT1 between the luminal (blood) and abluminal (brain) sides. Proton-coupled symport function of MCT1 was also confirmed.
Conclusion
The 3D-BBB system constructed in this study mimics several important characteristics of the human BBB, and is expected to be a useful high-throughput evaluation tool in the development of CNS drugs.
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10
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Huttunen KM, Terasaki T, Urtti A, Montaser AB, Uchida Y. Pharmacoproteomics of Brain Barrier Transporters and Substrate Design for the Brain Targeted Drug Delivery. Pharm Res 2022; 39:1363-1392. [PMID: 35257288 PMCID: PMC9246989 DOI: 10.1007/s11095-022-03193-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/08/2022] [Indexed: 12/12/2022]
Abstract
One of the major reasons why central nervous system (CNS)-drug development has been challenging in the past, is the barriers that prevent substances entering from the blood circulation into the brain. These barriers include the blood-brain barrier (BBB), blood-spinal cord barrier (BSCB), blood-cerebrospinal fluid barrier (BCSFB), and blood-arachnoid barrier (BAB), and they differ from each other in their transporter protein expression and function as well as among the species. The quantitative expression profiles of the transporters in the CNS-barriers have been recently revealed, and in this review, it is described how they affect the pharmacokinetics of compounds and how these expression differences can be taken into account in the prediction of brain drug disposition in humans, an approach called pharmacoproteomics. In recent years, also structural biology and computational resources have progressed remarkably, enabling a detailed understanding of the dynamic processes of transporters. Molecular dynamics simulations (MDS) are currently used commonly to reveal the conformational changes of the transporters and to find the interactions between the substrates and the protein during the binding, translocation in the transporter cavity, and release of the substrate on the other side of the membrane. The computational advancements have also aided in the rational design of transporter-utilizing compounds, including prodrugs that can be actively transported without losing potency towards the pharmacological target. In this review, the state-of-art of these approaches will be also discussed to give insights into the transporter-mediated drug delivery to the CNS.
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Affiliation(s)
- Kristiina M Huttunen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland.
| | - Tetsuya Terasaki
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland.
| | - Arto Urtti
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Ahmed B Montaser
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Yasuo Uchida
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
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11
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Hashimoto Y, Michiba K, Maeda K, Kusuhara H. Quantitative prediction of pharmacokinetic properties of drugs in humans: Recent advance in in vitro models to predict the impact of efflux transporters in the small intestine and blood-brain barrier. J Pharmacol Sci 2021; 148:142-151. [PMID: 34924119 DOI: 10.1016/j.jphs.2021.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/17/2021] [Accepted: 10/20/2021] [Indexed: 12/12/2022] Open
Abstract
Efflux transport systems are essential to suppress the absorption of xenobiotics from the intestinal lumen and protect the critical tissues at the blood-tissue barriers, such as the blood-brain barrier. The function of drug efflux transport is dominated by various transporters. Accumulated clinical evidences have revealed that genetic variations of the transporters, together with coadministered drugs, affect the expression and/or function of transporters and subsequently the pharmacokinetics of substrate drugs. Thus, in the preclinical stage of drug development, quantitative prediction of the impact of efflux transporters as well as that of uptake transporters and metabolic enzymes on the pharmacokinetics of drugs in humans has been performed using various in vitro experimental tools. Various kinds of human-derived cell systems can be applied to the precise prediction of drug transport in humans. Mathematical modeling consisting of each intrinsic metabolic or transport process enables us to understand the disposition of drugs both at the organ level and at the level of the whole body by integrating a variety of experimental results into model parameters. This review focuses on the role of efflux transporters in the intestinal absorption and brain distribution of drugs, in addition to recent advances in predictive tools and methodologies.
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Affiliation(s)
- Yoshiki Hashimoto
- Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuyoshi Michiba
- Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuya Maeda
- Laboratory of Pharmaceutics, Kitasato University School of Pharmacy, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hiroyuki Kusuhara
- Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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12
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Shen H, Yang Z, Rodrigues AD. Cynomolgus Monkey as an Emerging Animal Model to Study Drug Transporters: In Vitro, In Vivo, In Vitro-To-In Vivo Translation. Drug Metab Dispos 2021; 50:299-319. [PMID: 34893475 DOI: 10.1124/dmd.121.000695] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/06/2021] [Indexed: 11/22/2022] Open
Abstract
Membrane transporters have been recognized as one of the key determinants of pharmacokinetics and are also known to affect the efficacy and toxicity of drugs. Both qualitatively and quantitatively, however, transporter studies conducted using human in vitro systems have not always been predictive. Consequently, researchers have utilized cynomolgus monkeys as a model to study drug transporters and anticipate their effects in humans. Burgeoning reports of data in the last few years necessitates a comprehensive review on the topic of drug transporters in cynomolgus monkeys that includes cell-based tools, sequence homology, tissue expression, in vitro studies, in vivo studies, and in vitro-to-in vivo extrapolation (IVIVE). This review highlights the state-of-the-art applications of monkey transporter models to support the evaluation of transporter-mediated drug-drug interactions, clearance predictions, and endogenous transporter biomarker identification and validation. The data demonstrate that cynomolgus monkey transporter models, when used appropriately, can be an invaluable tool to support drug discovery and development processes. Most importantly, they provide an early IVIVE assessment which provides additional context to human in vitro data. Additionally, comprehending species similarities and differences in transporter tissue expression and activity is crucial when translating monkey data to humans. The challenges and limitations when applying such models to inform decision-making must also be considered. Significance Statement This paper presents a comprehensive review of currently available published reports describing cynomolgus monkey transporter models. The data indicate that cynomolgus monkeys provide mechanistic insight regarding the role of intestinal, hepatic, and renal transporters in drug and biomarker disposition and drug interactions. It is concluded that the data generated with cynomolgus monkey models provide mechanistic insight regarding transporter-mediated absorption and disposition, as well as human clearance prediction, drug-drug interaction assessment, and endogenous biomarker development related to drug transporters.
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Affiliation(s)
- Hong Shen
- Drug Metabolism and Pharmacokinetics, Bristol Myers Squibb, United States
| | - Zheng Yang
- Metabolism and Pharmacokinetics, Bristol-Myers Squibb Co., United States
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13
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Sato R, Ohmori K, Umetsu M, Takao M, Tano M, Grant G, Porter B, Bet A, Terasaki T, Uchida Y. An Atlas of the Quantitative Protein Expression of Anti-Epileptic-Drug Transporters, Metabolizing Enzymes and Tight Junctions at the Blood-Brain Barrier in Epileptic Patients. Pharmaceutics 2021; 13:pharmaceutics13122122. [PMID: 34959403 PMCID: PMC8708024 DOI: 10.3390/pharmaceutics13122122] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/02/2021] [Accepted: 12/08/2021] [Indexed: 01/06/2023] Open
Abstract
The purpose of the present study was to quantitatively elucidate the levels of protein expression of anti-epileptic-drug (AED) transporters, metabolizing enzymes and tight junction molecules at the blood–brain barrier (BBB) in the focal site of epilepsy patients using accurate SWATH (sequential window acquisition of all theoretical fragment ion spectra) proteomics. Brain capillaries were isolated from focal sites in six epilepsy patients and five normal brains; tryptic digests were produced and subjected to SWATH analysis. MDR1 and BCRP were significantly downregulated in the epilepsy group compared to the normal group. Out of 16 AED-metabolizing enzymes detected, the protein expression levels of GSTP1, GSTO1, CYP2E1, ALDH1A1, ALDH6A1, ALDH7A1, ALDH9A1 and ADH5 were significantly 2.13-, 6.23-, 2.16-, 2.80-, 1.73-, 1.67-, 2.47- and 2.23-fold greater in the brain capillaries of epileptic patients than those of normal brains, respectively. The protein expression levels of Claudin-5, ZO-1, Catenin alpha-1, beta-1 and delta-1 were significantly lower, 1.97-, 2.51-, 2.44-, 1.90- and 1.63-fold, in the brain capillaries of epileptic patients compared to those of normal brains, respectively. Consistent with these observations, leakage of blood proteins was also observed. These results provide for a better understanding of the therapeutic effect of AEDs and molecular mechanisms of AED resistance in epileptic patients.
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Affiliation(s)
- Risa Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (R.S.); (K.O.); (M.U.); (T.T.)
| | - Kotaro Ohmori
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (R.S.); (K.O.); (M.U.); (T.T.)
| | - Mina Umetsu
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (R.S.); (K.O.); (M.U.); (T.T.)
| | - Masaki Takao
- Department of Neurology and Brain Bank, Mihara Memorial Hospital, Isesaki 372-0006, Japan; (M.T.); (M.T.)
- Department of Clinical Laboratory, National Center of Neurology and Psychiatry, National Center Hospital, Kodaira 187-8551, Japan
| | - Mitsutoshi Tano
- Department of Neurology and Brain Bank, Mihara Memorial Hospital, Isesaki 372-0006, Japan; (M.T.); (M.T.)
| | - Gerald Grant
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA; (G.G.); (A.B.)
| | - Brenda Porter
- Department of Neurology, Stanford University, Stanford, CA 94305, USA;
| | - Anthony Bet
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA; (G.G.); (A.B.)
| | - Tetsuya Terasaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (R.S.); (K.O.); (M.U.); (T.T.)
| | - Yasuo Uchida
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (R.S.); (K.O.); (M.U.); (T.T.)
- Correspondence: ; Tel.: +81-22-795-6832
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14
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Uno Y, Yamazaki H. Cloning and tissue expression of ATP-binding cassette transporters in cynomolgus macaques. Drug Metab Pharmacokinet 2021; 42:100431. [PMID: 34974333 DOI: 10.1016/j.dmpk.2021.100431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 10/23/2021] [Accepted: 10/31/2021] [Indexed: 11/25/2022]
Abstract
Cynomolgus macaques are used in preclinical studies in part because of their evolutionary closeness to humans. However, drug transporters, including ATP-binding cassette (ABC) transporters, which are essential for the absorption and excretion of drugs, have not been fully investigated at the molecular level in cynomolgus macaques. In this study, ABCB4, ABCC3, ABCC4, and ABCG2 cDNAs were newly identified and characterized, along with ABCB1, ABCB11, and ABCC2 cDNAs previously identified, in cynomolgus macaques. All seven cynomolgus ABC transporters had high sequence identities (96-98%) with their human orthologs in terms of amino acid sequences and were also most closely clustered with their human orthologs by phylogenetic analysis. Furthermore, the gene structures and genomic organization were similar in cynomolgus macaques and humans. The mRNAs of these cynomolgus ABC transporters, as analyzed using the quantitative polymerase chain reaction, showed distinct tissue expression patterns. Among the ten tissues, ABCB1, ABCC2, ABCC3, and ABCG2 mRNAs were most abundantly expressed in jejunum; ABCB4 and ABCB11 in liver; and ABCC4 in kidney, which are similar to the expression patterns of human ABC transporters. These results suggest molecular similarities of the ABC transporters in cynomolgus macaques and humans.
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Affiliation(s)
- Yasuhiro Uno
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan; Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories, Ltd., Kainan, Japan.
| | - Hiroshi Yamazaki
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, Machida, Japan.
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15
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Investigation of the role and quantitative impact of breast cancer resistance protein on drug distribution into brain and CSF in rats. Drug Metab Pharmacokinet 2021; 42:100430. [PMID: 34896751 DOI: 10.1016/j.dmpk.2021.100430] [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: 09/01/2021] [Revised: 10/17/2021] [Accepted: 10/26/2021] [Indexed: 11/24/2022]
Abstract
Breast cancer resistance protein (BCRP) expressed in the blood-brain barrier plays a major role in limiting drug distribution into the central nervous system (CNS). However, functional involvement of BCRP in drug distribution into the brain and cerebrospinal fluid (CSF) remains unclear. The aim of present study was to reveal the role and quantitative impact of BCRP on CNS distribution. The brain-to-plasma unbound concentration ratio (Kp,uu,brain) and CSF-to-plasma unbound concentration ratio (Kp,uu,CSF) values of BCRP-specific substrates were determined in rats. The Kp,uu,brain values decreased, as the in vitro BCRP corrected flux ratio (CFR) increased. The Kp,uu,CSF values of BCRP-specific substrates were greater than the Kp,uu,brain values. Increase in the Kp,uu,brain values induced by co-administration of BCRP inhibitor correlated with the in vitro BCRP CFR and were greater than the increase in Kp,uu,CSF values induced by BCRP inhibitor except nebicapone. The contribution of BCRP to the brain and CSF distribution of the dual P-glycoprotein/BCRP substrates, imatinib and prazosin, was similar to that of BCRP-specific substrates. Thus, we revealed that the impact of in vivo BCRP on CNS distribution is correlated with in vitro BCRP CFR, and that BCRP limits drug distribution into the brain more strongly than into the CSF.
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16
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Kido Y, Nanchi I, Fusamae Y, Matsuzaki T, Akazawa T, Sawada H, Iwasaki M, Nishida K, Tsuchiya E, Okuda T. Species difference in brain penetration of P-gp and BCRP substrates among monkey, dog and mouse. Drug Metab Pharmacokinet 2021; 42:100426. [PMID: 34974334 DOI: 10.1016/j.dmpk.2021.100426] [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] [Received: 07/12/2021] [Revised: 10/05/2021] [Accepted: 10/18/2021] [Indexed: 12/12/2022]
Abstract
The brain penetration of 19 drugs, including P-glycoprotein (P-gp) and/or breast cancer resistance protein (BCRP) substrates, was compared among mice, cynomolgus monkeys and beagle dogs. The brain-to-plasma concentration ratios (Kp,brain) of the tested compounds in monkey and dog showed good correlation, whereas species differences were observed between non-rodents (monkey/dog) and rodents (mouse). In particular, the Kp,brain values of 7 compounds out of 12 P-gp substrates (Kp,brain ratio in P-gp knockout mice versus wild-type mice ≥3) in monkey and dog were more than three-fold higher than those in mice and a similar trend was observed in the brain-to-plasma unbound concentration ratios (Kp,uu,brain). The cerebral spinal fluid (CSF) drug concentrations (CCSF), a surrogate for unbound brain concentration (Cu,brain), were also compared between dog and monkey, and the CSF-to-plasma unbound concentration ratios (Kp,uu,CSF) of BCRP substrates in dog were notably higher than those in monkey, although non-bcrp substrates showed good correlation. Also, the Kp,uu,CSF values of BCRP substrates in dog were clearly higher than the Kp,uu,brain values, indicating that the dog CCSF of BCRP substrates was not suitable as a surrogate of Cu,brain. These observations should be useful when selecting the appropriate animal models for CNS drug discovery.
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Affiliation(s)
- Yasuto Kido
- Laboratory for Drug Discovery and Development, Shionogi & Co., Ltd., Osaka, Japan.
| | - Isamu Nanchi
- Laboratory for Innovative Therapy Research, Shionogi & Co., Ltd., Osaka, Japan.
| | - Yasuyuki Fusamae
- Laboratory for Innovative Therapy Research, Shionogi & Co., Ltd., Osaka, Japan.
| | - Takanobu Matsuzaki
- Laboratory for Drug Discovery and Development, Shionogi & Co., Ltd., Osaka, Japan.
| | - Takanori Akazawa
- Laboratory for Drug Discovery and Development, Shionogi & Co., Ltd., Osaka, Japan.
| | - Hiromi Sawada
- Laboratory for Drug Discovery and Development, Shionogi & Co., Ltd., Osaka, Japan.
| | - Makoto Iwasaki
- Shionogi Techno Advance Research & Co., Ltd, Osaka, Japan.
| | - Kimiko Nishida
- Shionogi Techno Advance Research & Co., Ltd, Osaka, Japan.
| | | | - Tomohiko Okuda
- Laboratory for Innovative Therapy Research, Shionogi & Co., Ltd., Osaka, Japan.
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17
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Anoshchenko O, Storelli F, Unadkat JD. Successful Prediction of Human Fetal Exposure to P-Glycoprotein Substrate Drugs Using the Proteomics-Informed Relative Expression Factor Approach and PBPK Modeling and Simulation. Drug Metab Dispos 2021; 49:919-928. [PMID: 34426410 PMCID: PMC8626637 DOI: 10.1124/dmd.121.000538] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 07/20/2021] [Indexed: 12/15/2022] Open
Abstract
Many women take drugs during their pregnancy to treat a variety of clinical conditions. To optimize drug efficacy and reduce fetal toxicity, it is important to determine or predict fetal drug exposure throughout pregnancy. Previously, we developed and verified a maternal-fetal physiologically based pharmacokinetic (m-f PBPK) model to predict fetal Kp,uu (unbound fetal plasma AUC/unbound maternal plasma AUC) of drugs that passively cross the placenta. Here, we used in vitro transport studies in Transwell, in combination with our m-f PBPK model, to predict fetal Kp,uu of drugs that are effluxed by placental P-glycoprotein (P-gp)-namely, dexamethasone, betamethasone, darunavir, and lopinavir. Using Transwell, we determined the efflux ratio of these drugs in hMDR1-MDCKcP-gpKO cells, in which human P-gp was overexpressed and the endogenous P-gp was knocked out. Then, using the proteomics-informed efflux ratio-relative expressive factor approach, we predicted the fetal Kp,uu of these drugs at term. Finally, to verify our predictions, we compared them with the observed in vivo fetal Kp,uu at term. The latter was estimated using our m-f PBPK model and published fetal [umbilical vein (UV)]/maternal plasma drug concentrations obtained at term (UV/maternal plasma). Fetal Kp,uu predictions for dexamethasone (0.63), betamethasone (0.59), darunavir (0.17), and lopinavir (0.08) were successful, as they fell within the 90% confidence interval of the corresponding in vivo fetal Kp,uu (0.30-0.66, 0.29-0.71, 0.11-0.22, 0.04-0.19, respectively). This is the first demonstration of successful prediction of fetal Kp,uu of P-gp drug substrates from in vitro studies. SIGNIFICANCE STATEMENT: For the first time, using in vitro studies in cells, this study successfully predicted human fetal Kp,uu of P-gp substrate drugs. This success confirms that the m-f PBPK model, combined with the ER-REF approach, can successfully predict fetal drug exposure to P-gp substrates. This success provides increased confidence in the use of the ER-REF approach, combined with the m-f PBPK model, to predict fetal Kp,uu of drugs (transported by P-gp or other transporters), both at term and at earlier gestational ages.
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Affiliation(s)
- Olena Anoshchenko
- Department of Pharmaceutics, University of Washington, Seattle, Washington
| | - Flavia Storelli
- Department of Pharmaceutics, University of Washington, Seattle, Washington
| | - Jashvant D Unadkat
- Department of Pharmaceutics, University of Washington, Seattle, Washington
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18
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Terasaki T. [Development of Novel Methodology and Its Application for Clarifying the Transport Function of the Blood-brain Barrier]. YAKUGAKU ZASSHI 2021; 141:447-462. [PMID: 33790111 DOI: 10.1248/yakushi.20-00232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The blood-brain barrier (BBB) consists of brain capillary endothelial cells linked by tight junctions and serves to regulate the transfer of endogenous compounds and xenobiotics between the circulating blood and brain interstitial fluid. We have developed a methodology to characterize brain-to-blood efflux transport in vivo, using the Brain Efflux Index and an in vitro culture model of the BBB, i.e., a conditionally immortalized cell line of the neurovascular unit. Employing these methods, we showed that the BBB plays an important role in protecting the brain by transporting neurotransmitters, neuromodulators, metabolites, uremic toxins, and xenobiotics together with atrial natriuretic peptide from the brain interstitial fluid to the circulating blood. We also developed a highly selective, sensitive LC-MS/MS method for simultaneous protein quantification. We found significant species differences in the expression amounts of various BBB transporter proteins among mice, rats, marmosets, cynomolgus monkeys, and humans. Among transporter proteins at the BBB, multidrug resistance protein 1 (Mdr1/Abcb1) is known to generate a concentration gradient of unbound substrate drugs between the blood and brain. Based on measurements of the intrinsic efflux transport rate of Mdr1 and the protein expression amounts of Mdr1 in mouse brain capillaries and Mdr1-expressing cell lines, we predicted the unbound drug concentration gradients of 7 drugs in the mouse brain in vivo. This was the first successful prediction of in vivo drug transport activity from in vitro experimental data and transporter protein concentration in tissues. This methodology and findings should greatly advance central nervous system barrier research.
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Affiliation(s)
- Tetsuya Terasaki
- Membrane Transport and Drug Targeing Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University
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19
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Storelli F, Anoshchenko O, Unadkat JD. Successful Prediction of Human Steady-State Unbound Brain-to-Plasma Concentration Ratio of P-gp Substrates Using the Proteomics-Informed Relative Expression Factor Approach. Clin Pharmacol Ther 2021; 110:432-442. [PMID: 33675056 PMCID: PMC8360000 DOI: 10.1002/cpt.2227] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 01/25/2021] [Indexed: 12/31/2022]
Abstract
In order to optimize central nervous system (CNS) drug development, accurate prediction of the drug's human steady-state unbound brain interstitial fluid-to-plasma concentration ratio (Kp,uu,brain ) is critical, especially for drugs that are effluxed by the multiple drug resistance transporters (e.g., P-glycoprotein, P-gp). Due to lack of good in vitro human blood-brain barrier models, we and others have advocated the use of a proteomics-informed relative expressive factor (REF) approach to predict Kp,uu,brain . Therefore, we tested the success of this approach in humans, with a focus on P-gp substrates, using brain positron emission tomography imaging data for verification. To do so, the efflux ratio (ER) of verapamil, N-desmethyl loperamide, and metoclopramide was determined in human P-gp-transfected MDCKII cells using the Transwell assay. Then, using the ER estimate, Kp,uu,brain of the drug was predicted using REF (ER approach). Alternatively, in vitro passive and P-gp-mediated intrinsic clearances (CLs) of these drugs, estimated using a five-compartmental model, were extrapolated to in vivo using REF (active CL) and brain microvascular endothelial cells protein content (passive CL). The ER approach successfully predicted Kp,uu,brain of all three drugs within twofold of observed data and within 95% confidence interval of the observed data for verapamil and N-desmethyl loperamide. Using the in vitro-to-in vivo extrapolated clearance approach, Kp,uu,brain was reasonably well predicted but not the brain unbound interstitial fluid drug concentration-time profile. Therefore, we propose that the ER approach be used to predict Kp,uu,brain of CNS candidate drugs to enhance their success in development.
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Affiliation(s)
- Flavia Storelli
- Department of PharmaceuticsSchool of PharmacyUniversity of WashingtonSeattleWashingtonUSA
| | - Olena Anoshchenko
- Department of PharmaceuticsSchool of PharmacyUniversity of WashingtonSeattleWashingtonUSA
| | - Jashvant D. Unadkat
- Department of PharmaceuticsSchool of PharmacyUniversity of WashingtonSeattleWashingtonUSA
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20
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Abstract
From the viewpoint of drug discovery, it is an important issue to elucidate the drug permeability at the human central nervous system (CNS) barriers and the molecular mechanisms in the cells forming CNS barriers especially during CNS diseases. I introduced quantitative proteomics techniques into the blood-brain barrier (BBB) study, then quantitatively investigated the transport system at the human BBB and clarified the quantitative differences in protein expression levels and functions of transporters and receptors between animals and humans, or in vitro and in vivo. Based on the difference in the absolute expression level of transporters between in vitro and in vivo, I demonstrated that the drug efflux activity of P-glycoprotein (P-gp) at in vivo BBB can be accurately reconstructed from the in vitro system, not only in mouse models but also monkeys similar to humans and pathological conditions. Furthermore, I discovered Claudin-11 as another tight junction molecule expressed at the CNS barriers, and clarified that it contributes to the disruption of the CNS barriers in multiple sclerosis. Furthermore, it was also elucidated that the P-gp dysfunction causes excessive brain entry of glucocorticoid which causes a nerve damage in cerebral infarct, and it can be suppressed by targeting Abl/Src kinases. These suggest that targeting the tight junctions and transporters, which are important molecules at the CNS barriers, would potentially lead to the treatment of CNS diseases. In this review, I would like to introduce a new CNS barrier study opened by quantitative proteomics research.
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Affiliation(s)
- Yasuo Uchida
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University
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21
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Rowbottom C, Pietrasiewicz A, Tuczewycz T, Grater R, Qiu D, Kapadnis S, Trapa P. Optimization of dose and route of administration of the P-glycoprotein inhibitor, valspodar (PSC-833) and the P-glycoprotein and breast cancer resistance protein dual-inhibitor, elacridar (GF120918) as dual infusion in rats. Pharmacol Res Perspect 2021; 9:e00740. [PMID: 33660938 PMCID: PMC7931226 DOI: 10.1002/prp2.740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 02/01/2021] [Indexed: 01/16/2023] Open
Abstract
Transporters can play a key role in the absorption, distribution, metabolism, and excretion of drugs. Understanding these contributions early in drug discovery allows for more accurate projection of the clinical pharmacokinetics. One method to assess the impact of transporters in vivo involves co‐dosing specific inhibitors. The objective of the present study was to optimize the dose and route of administration of a P‐glycoprotein (P‐gp) inhibitor, valspodar (PSC833), and a dual P‐gp/breast cancer resistance protein (BCRP) inhibitor, elacridar (GF120918), by assessing the transporters’ impact on brain penetration and absorption. A dual‐infusion strategy was implemented to allow for flexibility with dose formulation. The chemical inhibitor was dosed intravenously via the femoral artery, and a cassette of known substrates was infused via the jugular vein. Valspodar or elacridar was administered as 4.5‐hour constant infusions over a range of doses. To assess the degree of inhibition, the resulting ratios of brain and plasma concentrations, Kp's, of the known substrates were compared to the vehicle control. These data demonstrated that doses greater than 0.9 mg/hr/kg valspodar and 8.9 mg/hr/kg elacridar were sufficient to inhibit P‐gp‐ and BCRP‐mediated efflux at the blood‐brain barrier in rats without any tolerability issues. Confirmation of BBB restriction by efflux transporters in preclinical species allows for subsequent prediction in humans based upon the proteomic expression at rodent and human BBB. Overall, the approach can also be applied to inhibition of efflux at other tissues (gut absorption, liver clearance) or can be extended to other transporters of interest using alternate inhibitors.
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22
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Neuropharmacokinetic visualization of regional and subregional unbound antipsychotic drug transport across the blood-brain barrier. Mol Psychiatry 2021; 26:7732-7745. [PMID: 34480089 PMCID: PMC8872980 DOI: 10.1038/s41380-021-01267-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 08/09/2021] [Accepted: 08/17/2021] [Indexed: 02/07/2023]
Abstract
Comprehensive determination of the extent of drug transport across the region-specific blood-brain barrier (BBB) is a major challenge in preclinical studies. Multiple approaches are needed to determine the regional free (unbound) drug concentration at which a drug engages with its therapeutic target. We present an approach that merges in vivo and in vitro neuropharmacokinetic investigations with mass spectrometry imaging to quantify and visualize both the extent of unbound drug BBB transport and the post-BBB cerebral distribution of drugs at regional and subregional levels. Direct imaging of the antipsychotic drugs risperidone, clozapine, and olanzapine using this approach enabled differentiation of regional and subregional BBB transport characteristics at 20-µm resolution in small brain regions, which could not be achieved by other means. Our approach allows investigation of heterogeneity in BBB transport and presents new possibilities for molecular psychiatrists by facilitating interpretation of regional target-site exposure results and decision-making.
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23
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Masuda T, Mori A, Ito S, Ohtsuki S. Quantitative and targeted proteomics-based identification and validation of drug efficacy biomarkers. Drug Metab Pharmacokinet 2020; 36:100361. [PMID: 33097418 DOI: 10.1016/j.dmpk.2020.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 12/25/2022]
Abstract
Proteomics refers to the large-scale study of proteins, providing comprehensive and quantitative information on proteins in tissue, blood, and cell samples. In many studies, proteomics utilizes liquid chromatography-mass spectrometry. Proteomics has developed from a qualitative methodology of protein identification to a quantitative methodology for comparing protein expression, and it is currently classified into two distinct methodologies: quantitative and targeted proteomics. Quantitative proteomics comprehensively identifies proteins in samples, providing quantitative information on large-scale comparative profiles of protein expression. Targeted proteomics simultaneously quantifies only target proteins with high sensitivity and specificity. Therefore, in biomarker research, quantitative proteomics is used for the identification of biomarker candidates, and targeted proteomics is used for the validation of biomarkers. Understanding the specific characteristics of each method is important for conducting appropriate proteomics studies. In this review, we introduced the different characteristics and applications of quantitative and targeted proteomics, and then discussed the results of our recent proteomics studies that focused on the identification and validation of biomarkers of drug efficacy. These findings may enable us to predict the outcomes of cancer therapy and drug-drug interactions with antibiotics through changes in the intestinal microbiome.
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Affiliation(s)
- Takeshi Masuda
- Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Department of Pharmaceutical Microbiology, School of Pharmacy, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan.
| | - Ayano Mori
- Department of Pharmaceutical Microbiology, School of Pharmacy, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan.
| | - Shingo Ito
- Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Department of Pharmaceutical Microbiology, School of Pharmacy, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan.
| | - Sumio Ohtsuki
- Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Department of Pharmaceutical Microbiology, School of Pharmacy, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan.
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Nicolaï J, Chapy H, Gillent E, Saunders K, Ungell AL, Nicolas JM, Chanteux H. Impact of In Vitro Passive Permeability in a P-gp-transfected LLC-PK1 Model on the Prediction of the Rat and Human Unbound Brain-to-Plasma Concentration Ratio. Pharm Res 2020; 37:175. [PMID: 32856111 DOI: 10.1007/s11095-020-02867-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 06/24/2020] [Indexed: 12/19/2022]
Abstract
PURPOSE More accurate prediction of the extent of drug brain exposure in early drug discovery and understanding potential species differences could help to guide medicinal chemistry and avoid unnecessary animal studies. Hence, the aim of the current study was to validate the use of a P-gp transfected LLC-PK1 model to predict the unbound brain-to-plasma concentration ratio (Kpuu,brain) in rats and humans. METHODS MOCK-, Mdr1a- and MDR1-transfected LLC-PK1 monolayers were applied in a transwell setup to quantify the bidirectional transport for 12 specific P-gp substrates, 48 UCB drug discovery compounds, 11 compounds with reported rat in situ brain perfusion data and 6 compounds with reported human Kpuu,brain values. The in vitro transport data were introduced in a minimal PBPK model (SIVA®) to determine the transport parameters. These parameters were combined with the differences between in vitro and in vivo passive permeability as well as P-gp expression levels (as determined by LC-MS/MS), to predict the Kpuu,brain. RESULTS A 10-fold difference between in vitro and in vivo passive permeability was observed. Incorporation of the differences between in vitro and in vivo passive permeability and P-gp expression levels resulted in an improved prediction of rat (AAFE 2.17) and human Kpuu,brain (AAFE 2.10). CONCLUSIONS We have succesfully validated a methodology to use a P-gp overexpressing LLC-PK1 cell line to predict both rat and human Kpuu,brain by correcting for both passive permeability and P-gp expression levels.
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Affiliation(s)
- Johan Nicolaï
- Development Science, UCB Biopharma SRL, Chemin du Foriest, B1420, Braine-l'Alleud, Belgium.
| | - Hélène Chapy
- Development Science, UCB Biopharma SRL, Chemin du Foriest, B1420, Braine-l'Alleud, Belgium
| | - Eric Gillent
- Development Science, UCB Biopharma SRL, Chemin du Foriest, B1420, Braine-l'Alleud, Belgium
| | - Kenneth Saunders
- Development Science, UCB Biopharma SRL, Chemin du Foriest, B1420, Braine-l'Alleud, Belgium
| | - Anna-Lena Ungell
- Development Science, UCB Biopharma SRL, Chemin du Foriest, B1420, Braine-l'Alleud, Belgium
| | - Jean-Marie Nicolas
- Development Science, UCB Biopharma SRL, Chemin du Foriest, B1420, Braine-l'Alleud, Belgium
| | - Hugues Chanteux
- Development Science, UCB Biopharma SRL, Chemin du Foriest, B1420, Braine-l'Alleud, Belgium
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25
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García-Varela L, Arif WM, Vállez García D, Kakiuchi T, Ohba H, Harada N, Tago T, Elsinga PH, Tsukada H, Colabufo NA, Dierckx RAJO, van Waarde A, Toyohara J, Boellaard R, Luurtsema G. Pharmacokinetic Modeling of [ 18F]MC225 for Quantification of the P-Glycoprotein Function at the Blood-Brain Barrier in Non-Human Primates with PET. Mol Pharm 2020; 17:3477-3486. [PMID: 32787277 PMCID: PMC7482398 DOI: 10.1021/acs.molpharmaceut.0c00514] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
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[18F]MC225 has been developed as a weak substrate of
P-glycoprotein (P-gp) aimed to measure changes in the P-gp function
at the blood–brain barrier with positron emission tomography.
This study evaluates [18F]MC225 kinetics in non-human primates
and investigates the effect of both scan duration and P-gp inhibition.
Three rhesus monkeys underwent two 91-min dynamic scans with blood
sampling at baseline and after P-gp inhibition (8 mg/kg tariquidar).
Data were analyzed using the 1-tissue compartment model (1-TCM) and
2-tissue compartment model (2-TCM) fits using metabolite-corrected
plasma as the input function and for various scan durations (10, 20,
30, 60, and 91 min). The preferred model was chosen according to the
Akaike information criterion and the standard errors (%) of the estimated
parameters. For the 91-min scan duration, the influx constant K1 increased by 40.7% and the volume of distribution
(VT) by 30.4% after P-gp inhibition, while
the efflux constant k2 did not change
significantly. Similar changes were found for all evaluated scan durations. K1 did not depend on scan duration (10 min—K1 = 0.2191 vs 91 min—K1 = 0.2258), while VT and k2 did. A scan duration of 10 min seems sufficient
to properly evaluate the P-gp function using K1 obtained with 1-TCM. For the 91-min scan, VT and K1 can be estimated
with a 2-TCM, and both parameters can be used to assess P-gp function.
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Affiliation(s)
- Lara García-Varela
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, Groningen 9713 GZ, the Netherlands
| | - Wejdan M Arif
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, Groningen 9713 GZ, the Netherlands.,Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - David Vállez García
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, Groningen 9713 GZ, the Netherlands
| | - Takeharu Kakiuchi
- Central Research Laboratory, Hamamatsu Photonics KK, 5000 Hirakuchi, Hamakita, Hamamatsu, Shizuoka 434-8601, Japan
| | - Hiroyuki Ohba
- Central Research Laboratory, Hamamatsu Photonics KK, 5000 Hirakuchi, Hamakita, Hamamatsu, Shizuoka 434-8601, Japan
| | - Norihiro Harada
- Central Research Laboratory, Hamamatsu Photonics KK, 5000 Hirakuchi, Hamakita, Hamamatsu, Shizuoka 434-8601, Japan
| | - Tetsuro Tago
- Research Team for Neuroimaging, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
| | - Philip H Elsinga
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, Groningen 9713 GZ, the Netherlands
| | - Hideo Tsukada
- Central Research Laboratory, Hamamatsu Photonics KK, 5000 Hirakuchi, Hamakita, Hamamatsu, Shizuoka 434-8601, Japan
| | - Nicola Antonio Colabufo
- Department of Pharmacy, University of Bari Aldo Moro, Bari 70121, Italy.,Biofordrug, Spin-off Università degli Studi di Bari "A. Moro", via Dante 99, Triggiano, Bari 70019, Italy
| | - Rudi A J O Dierckx
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, Groningen 9713 GZ, the Netherlands
| | - Aren van Waarde
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, Groningen 9713 GZ, the Netherlands
| | - Jun Toyohara
- Research Team for Neuroimaging, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
| | - Ronald Boellaard
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, Groningen 9713 GZ, the Netherlands
| | - Gert Luurtsema
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, Groningen 9713 GZ, the Netherlands
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Huang L, Wells MC, Zhao Z. A Practical Perspective on the Evaluation of Small Molecule CNS Penetration in Drug Discovery. Drug Metab Lett 2020; 13:78-94. [PMID: 30854983 DOI: 10.2174/1872312813666190311125652] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 02/20/2019] [Accepted: 03/01/2019] [Indexed: 01/16/2023]
Abstract
The separation of the brain from blood by the blood-brain barrier and the bloodcerebrospinal fluid (CSF) barrier poses unique challenges for the discovery and development of drugs targeting the central nervous system (CNS). This review will describe the role of transporters in CNS penetration and examine the relationship between unbound brain (Cu-brain) and unbound plasma (Cu-plasma) or CSF (CCSF) concentration. Published data demonstrate that the relationship between Cu-brain and Cu-plasma or CCSF can be affected by transporter status and passive permeability of a drug and CCSF may not be a reliable surrogate for CNS penetration. Indeed, CCSF usually over-estimates Cu-brain for efflux substrates and it provides no additional value over Cu-plasma as the surrogate of Cu-brain for highly permeable non-efflux substrates. A strategy described here for the evaluation of CNS penetration is to use in vitro permeability, P-glycoprotein (Pgp) and breast cancer resistance protein efflux assays and Cu-brain/Cu-plasma in preclinical species. Cu-plasma should be used as the surrogate of Cu-brain for highly permeable non-efflux substrates with no evidence of impaired distribution into the brain. When drug penetration into the brain is impaired, we recommend using (total brain concentration * unbound fraction in the brain) as Cu-brain in preclinical species or Cu-plasma/in vitro Pgp efflux ratio if Pgp is the major limiting mechanism for brain penetration.
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Affiliation(s)
- Liyue Huang
- Epizyme Inc, 400 Technology Square, Cambridge, MA-02139, United States
| | - Mary C Wells
- Vertex Pharmaceuticals, 50 Northern Ave, Boston, MA-02210, United States
| | - Zhiyang Zhao
- Alliance Pharma, Inc. 17 Lee Blvd. Malvern, PA-19355, United States
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27
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Uchida Y, Yagi Y, Takao M, Tano M, Umetsu M, Hirano S, Usui T, Tachikawa M, Terasaki T. Comparison of Absolute Protein Abundances of Transporters and Receptors among Blood–Brain Barriers at Different Cerebral Regions and the Blood–Spinal Cord Barrier in Humans and Rats. Mol Pharm 2020; 17:2006-2020. [DOI: 10.1021/acs.molpharmaceut.0c00178] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yasuo Uchida
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Yuta Yagi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Masaki Takao
- Department of Neurology and Brain Bank, Mihara Memorial Hospital, Isesaki 372-0006, Japan
- Department of Neurology, Saitama International Medical Center, Saitama Medical University, Hidaka 350-0495, Japan
| | - Mitsutoshi Tano
- Department of Neurology and Brain Bank, Mihara Memorial Hospital, Isesaki 372-0006, Japan
| | - Mina Umetsu
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Satoshi Hirano
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Takuya Usui
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Masanori Tachikawa
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Tetsuya Terasaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
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Role of P-glycoprotein in the brain disposition of seletalisib: Evaluation of the potential for drug-drug interactions. Eur J Pharm Sci 2020; 142:105122. [PMID: 31678424 DOI: 10.1016/j.ejps.2019.105122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/22/2019] [Accepted: 10/25/2019] [Indexed: 11/21/2022]
Abstract
Seletalisib is an orally bioavailable selective inhibitor of phosphoinositide 3-kinase delta (PI3Kδ) in clinical development for the treatment of immune-mediated inflammatory diseases. The present study investigated the role of P-gp in seletalisib disposition, especially brain distribution, and the associated risks of interactions. Seletalisib was found to be actively transported by rodent and human P-gp in vitro (transfected LLC-PK1 cells; Km of ca. 20 µM), with minimal or no affinity for the other tested transporters. A distribution study in knockout rats (single oral dosing at 750 mg kg-1) showed that P-gp restricts the brain disposition of seletalisib while having minimal effect on its intestinal absorption. Restricted brain penetration was also observed in cynomolgus monkeys (single oral dosing at 30 mg kg-1) using brain microdialysis and cerebrospinal fluid sampling (Kp,uu of 0.09 and 0.24, respectively). These findings opened the question of potential pharmacokinetic interaction between seletalisib and P-gp inhibitors. In vitro, CsA inhibited the active transport of seletalisib with an IC50 of 0.13 µM. In rats, co-administration of high doses of CsA (bolus iv followed by continuous infusion) increased the brain distribution of seletalisib (single oral dosing at 5 mg kg-1). The observed data were found aligned with those predicted by in vitro-in vivo extrapolation. Based on the same extrapolation method combined with literature data, only very few P-gp inhibitors (i.e. CsA, quinine, quinidine) were predicted to increase the brain disposition of seletalisib in the clinical setting (maximal 3-fold changes).
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29
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Gomez-Zepeda D, Taghi M, Scherrmann JM, Decleves X, Menet MC. ABC Transporters at the Blood-Brain Interfaces, Their Study Models, and Drug Delivery Implications in Gliomas. Pharmaceutics 2019; 12:pharmaceutics12010020. [PMID: 31878061 PMCID: PMC7022905 DOI: 10.3390/pharmaceutics12010020] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/13/2019] [Accepted: 12/20/2019] [Indexed: 12/22/2022] Open
Abstract
Drug delivery into the brain is regulated by the blood-brain interfaces. The blood-brain barrier (BBB), the blood-cerebrospinal fluid barrier (BCSFB), and the blood-arachnoid barrier (BAB) regulate the exchange of substances between the blood and brain parenchyma. These selective barriers present a high impermeability to most substances, with the selective transport of nutrients and transporters preventing the entry and accumulation of possibly toxic molecules, comprising many therapeutic drugs. Transporters of the ATP-binding cassette (ABC) superfamily have an important role in drug delivery, because they extrude a broad molecular diversity of xenobiotics, including several anticancer drugs, preventing their entry into the brain. Gliomas are the most common primary tumors diagnosed in adults, which are often characterized by a poor prognosis, notably in the case of high-grade gliomas. Therapeutic treatments frequently fail due to the difficulty of delivering drugs through the brain barriers, adding to diverse mechanisms developed by the cancer, including the overexpression or expression de novo of ABC transporters in tumoral cells and/or in the endothelial cells forming the blood-brain tumor barrier (BBTB). Many models have been developed to study the phenotype, molecular characteristics, and function of the blood-brain interfaces as well as to evaluate drug permeability into the brain. These include in vitro, in vivo, and in silico models, which together can help us to better understand their implication in drug resistance and to develop new therapeutics or delivery strategies to improve the treatment of pathologies of the central nervous system (CNS). In this review, we present the principal characteristics of the blood-brain interfaces; then, we focus on the ABC transporters present on them and their implication in drug delivery; next, we present some of the most important models used for the study of drug transport; finally, we summarize the implication of ABC transporters in glioma and the BBTB in drug resistance and the strategies to improve the delivery of CNS anticancer drugs.
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Affiliation(s)
- David Gomez-Zepeda
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
- Correspondence: (D.G.-Z.); (M.-C.M.)
| | - Méryam Taghi
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
| | - Jean-Michel Scherrmann
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
| | - Xavier Decleves
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
- UF Biologie du médicament et toxicologie, Hôpital Cochin, AP HP, 75006 Paris, France
| | - Marie-Claude Menet
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
- UF Hormonologie adulte, Hôpital Cochin, AP HP, 75006 Paris, France
- Correspondence: (D.G.-Z.); (M.-C.M.)
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30
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Nicolas JM, de Lange ECM. Mind the Gaps: Ontogeny of Human Brain P-gp and Its Impact on Drug Toxicity. AAPS JOURNAL 2019; 21:67. [PMID: 31140038 DOI: 10.1208/s12248-019-0340-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 05/10/2019] [Indexed: 12/18/2022]
Abstract
Available data on human brain P-glycoprotein ontogeny during infancy and childhood are limited. This review discusses the current body of data relating to maturation of human brain P-glycoprotein including transporter expression levels in post-mortem human brain samples, in vivo transporter activity using probe substrates, surrogate marker endpoints, and extrapolations from animal models. Overall, the data tend to confirm that human brain P-glycoprotein activity keeps developing after birth, although with a developmental time frame that remains unclear. This knowledge gap is a concern given the critical role of brain P-glycoprotein in drug safety and efficacy, and the vulnerable nature of the pediatric population. Future research could include the measurement of brain P-glycoprotein activity across age groups using positron emission tomography or central pharmacodynamic responses. For now, caution is advised when extrapolating adult data to children aged younger than 2 years for drugs with P-glycoprotein-dependent central nervous system activity.
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Affiliation(s)
- Jean-Marie Nicolas
- Quantitative Pharmacology DMPK Department, UCB BioPharma, Chemin du Foriest, 1420, Braine L'Alleud, Belgium.
| | - Elizabeth C M de Lange
- Research Division of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
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31
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Billington S, Salphati L, Hop CECA, Chu X, Evers R, Burdette D, Rowbottom C, Lai Y, Xiao G, Humphreys WG, Nguyen TB, Prasad B, Unadkat JD. Interindividual and Regional Variability in Drug Transporter Abundance at the Human Blood-Brain Barrier Measured by Quantitative Targeted Proteomics. Clin Pharmacol Ther 2019; 106:228-237. [PMID: 30673124 DOI: 10.1002/cpt.1373] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/09/2019] [Indexed: 02/04/2023]
Abstract
For in vitro to in vivo extrapolation (IVIVE) of brain distribution of drugs that are transported at the human blood-brain barrier (BBB), it is important to quantify the interindividual and regional variability of drug transporter abundance at this barrier. Therefore, using quantitative targeted proteomics, we compared the abundance of adenosine triphosphate-binding cassette and solute carrier transporters in brain microvascular endothelial cells (BMECs) isolated from postmortem specimens of two matched brain regions, the occipital (Brodmann Area (BA)17) and parietal (BA39) lobe, from 30 adults. Of the quantifiable transporters, the abundance ranked: glucose transporter (GLUT)1 > breast cancer resistance protein > P-glycoprotein (P-gp) > equilibrative nucleoside transporter (ENT)1 > organic anion-transporting polypeptide (OATP)2B1. The abundance of multidrug resistance protein 1/2/3/4, OATP1A2, organic anion transporter (OAT)3, organic cation transporter (OCT)1/2, OCTN1/2, or ENT2 was below the limit of quantification. Transporter abundance per gram of tissue (scaled using GLUT1 abundance in BMEC vs. brain homogenate) in BA17 was 30-42% higher than BA39. The interindividual variability in transporter abundance (percentage of coefficient of variation (%CV)) was 35-57% (BA17) and 27-46% (BA39). These data can be used in proteomics-informed bottom-up IVIVE to predict human brain drug distribution.
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Affiliation(s)
- Sarah Billington
- Department of Pharmaceutics, University of Washington, Seattle, Washington, USA
| | - Laurent Salphati
- Drug Metabolism and Pharmacokinetics, Genentech, Inc., South San Francisco, California, USA
| | - Cornelis E C A Hop
- Drug Metabolism and Pharmacokinetics, Genentech, Inc., South San Francisco, California, USA
| | - Xiaoyan Chu
- Pharmacokinetics, Pharmacodynamics, and Drug Metabolism, Merck & Co., Kenilworth, New Jersey, USA
| | - Raymond Evers
- Pharmacokinetics, Pharmacodynamics, and Drug Metabolism, Merck & Co., Kenilworth, New Jersey, USA
| | | | | | - Yurong Lai
- Department of Drug Metabolism and Pharmacokinetics, Gilead Sciences, Inc., Foster City, California, USA
| | - Guangqing Xiao
- Department of Drug Metabolism and Pharmacokinetics, Takeda Pharmaceuticals International Co., Cambridge, Massachusetts, USA
| | | | - Tot Bui Nguyen
- Department of Pharmaceutics, University of Washington, Seattle, Washington, USA
| | - Bhagwat Prasad
- Department of Pharmaceutics, University of Washington, Seattle, Washington, USA
| | - Jashvant D Unadkat
- Department of Pharmaceutics, University of Washington, Seattle, Washington, USA
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32
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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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Goutal S, Langer O, Auvity S, Andrieux K, Coulon C, Caillé F, Gervais P, Cisternino S, Declèves X, Tournier N. Intravenous infusion for the controlled exposure to the dual ABCB1 and ABCG2 inhibitor elacridar in nonhuman primates. Drug Deliv Transl Res 2018; 8:536-542. [PMID: 29294257 DOI: 10.1007/s13346-017-0472-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Elacridar (GF120918) is a highly potent inhibitor of both P-glycoprotein (ABCB1) and breast cancer resistance protein (ABCG2), the main efflux transporters expressed at the blood-brain barrier (BBB). Elacridar shows very low aqueous solubility, which complicates its formulation for i.v. administration. An intravenous infusion protocol would be preferred to achieve high and controlled plasma concentrations of elacridar in large animals, including nonhuman primates. Formulation of elacridar for i.v. infusion was achieved using a co-solvent strategy, resulting in an aqueous dispersion with a final concentration of 5 g L-1 elacridar with tetrahydrofuran (5% w/v) in aqueous D-glucose solution (2.5%, w/v). Particle size (mean = 2.8 ± 0.9 μm) remained stable for 150 min. The preparation was i.v. administered as a continuous infusion (12 mg kg-1 h-1 for 90 min) to three baboons. Arterial and venous plasma pharmacokinetics (PK) of elacridar were monitored using a newly developed and validated HPLC-UV method. Elacridar concentration increased rapidly to reach a plateau at 9.5 μg mL-1 within 20 min after the start of infusion. Elacridar PK in venous plasma did not differ from arterial plasma facing the BBB, indicating the absence of an arteriovenous concentration gradient. Intravenous infusion of elacridar allows for controlled exposure of the BBB and offers a useful tool to assess the impact of ABCB1/ABCG2 on drug disposition to the brain in nonhuman primates, a relevant animal model for the study of transporter function at the BBB.
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Affiliation(s)
- Sébastien Goutal
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France.,CEA/DRF/Institut de Biologie François Jacob/MIRCen, Fontenay-aux-Roses, France
| | - Oliver Langer
- Health and Environment Department, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.,Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Sylvain Auvity
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France.,Variabilité de Réponse aux Psychotropes, INSERM, U1144, 75006, Paris, France.,Faculté de Pharmacie de Paris, Université Paris Descartes, Université Sorbonne Paris Cité, 75006, Paris, France
| | - Karine Andrieux
- Faculté de Pharmacie de Paris, Université Paris Descartes, Université Sorbonne Paris Cité, 75006, Paris, France.,UTCBS, CNRS UMR 8258, Inserm U1022, 75006, Paris, France
| | - Christine Coulon
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Fabien Caillé
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Philippe Gervais
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Salvatore Cisternino
- Variabilité de Réponse aux Psychotropes, INSERM, U1144, 75006, Paris, France.,Faculté de Pharmacie de Paris, Université Paris Descartes, Université Sorbonne Paris Cité, 75006, Paris, France
| | - Xavier Declèves
- Variabilité de Réponse aux Psychotropes, INSERM, U1144, 75006, Paris, France.,Faculté de Pharmacie de Paris, Université Paris Descartes, Université Sorbonne Paris Cité, 75006, Paris, France
| | - Nicolas Tournier
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France. .,CEA/DRF/JOLIOT/Service Hospitalier Frédéric Joliot, 91406, Orsay, France.
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Yamasaki Y, Kobayashi K, Okuya F, Kajitani N, Kazuki K, Abe S, Takehara S, Ito S, Ogata S, Uemura T, Ohtsuki S, Minegishi G, Akita H, Chiba K, Oshimura M, Kazuki Y. Characterization of P-Glycoprotein Humanized Mice Generated by Chromosome Engineering Technology: Its Utility for Prediction of Drug Distribution to the Brain in Humans. Drug Metab Dispos 2018; 46:1756-1766. [PMID: 29777024 DOI: 10.1124/dmd.118.081216] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 05/16/2018] [Indexed: 12/31/2022] Open
Abstract
P-glycoprotein (P-gp), encoded by the MDR1 gene in humans and by the Mdr1a/1b genes in rodents, is expressed in numerous tissues and performs as an efflux pump to limit the distribution and absorption of many drugs. Owing to species differences of P-gp between humans and rodents, it is difficult to predict the impact of P-gp on pharmacokinetics and the tissue distribution of P-gp substrates in humans from the results of animal experiments. Therefore, we generated a novel P-gp humanized mouse model by using a mouse artificial chromosome (MAC) vector [designated human MDR1-MAC (hMDR1-MAC) mice]. The results showed that hMDR1 mRNA was expressed in various tissues of hMDR1-MAC mice. Furthermore, the expression of human P-gp was detected in the brain capillary fraction and plasma membrane fraction of intestinal epithelial cells isolated from hMDR1-MAC mice, although the expression levels of intestinal P-gp were extremely low. Thus, we evaluated the function of human P-gp at the blood-brain barrier of hMDR1-MAC mice. The brain-to-plasma ratios of P-gp substrates in hMDR1-MAC mice were much lower than those in Mdr1a/1b-knockout mice, and the brain-to-plasma ratio of paclitaxel was significantly increased by pretreatment with a P-gp inhibitor in hMDR1-MAC mice. These results indicated that the hMDR1-MAC mice are the first P-gp humanized mice expressing functional human P-gp at the blood-brain barrier. This mouse is a promising model with which to evaluate species differences of P-gp between humans and mice in vivo and to estimate the brain distribution of drugs in humans while taking into account species differences of P-gp.
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Affiliation(s)
- Yuki Yamasaki
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Kaoru Kobayashi
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Fuka Okuya
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Naoyo Kajitani
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Kanako Kazuki
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Satoshi Abe
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Shoko Takehara
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Shingo Ito
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Seiryo Ogata
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Tatsuki Uemura
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Sumio Ohtsuki
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Genki Minegishi
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Hidetaka Akita
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Kan Chiba
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Mitsuo Oshimura
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
| | - Yasuhiro Kazuki
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan (Y.Y., K.Ko., F.O., G.M., H.A., K.C.); Chromosome Engineering Research Center (N.K., K.Ka., S.A., S.T., M.O., Y.K.) and Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science (Y.K.), Tottori University, Tottori, Japan; and Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan (S.I., S.Og., T.U., S.Oh.)
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Auvity S, Caillé F, Marie S, Wimberley C, Bauer M, Langer O, Buvat I, Goutal S, Tournier N. P-Glycoprotein (ABCB1) Inhibits the Influx and Increases the Efflux of 11C-Metoclopramide Across the Blood-Brain Barrier: A PET Study on Nonhuman Primates. J Nucl Med 2018; 59:1609-1615. [PMID: 29748235 DOI: 10.2967/jnumed.118.210104] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 04/23/2018] [Indexed: 12/15/2022] Open
Abstract
PET imaging using radiolabeled avid substrates of the ATP-binding cassette (ABC) transporter P-glycoprotein (ABCB1) has convincingly revealed the role of this major efflux transporter in limiting the influx of its substrates from blood into the brain across the blood-brain barrier (BBB). Many drugs, such as metoclopramide, are weak ABCB1 substrates and distribute into the brain even when ABCB1 is fully functional. In this study, we used kinetic modeling and validated simplified methods to highlight and quantify the impact of ABCB1 on the BBB influx and efflux of 11C-metoclopramide, as a model of a weak ABCB1 substrate, in nonhuman primates. Methods: The regional brain kinetics of a tracer dose of 11C-metoclopramide (298 ± 44 MBq) were assessed in baboons using PET without (n = 4) or with (n = 4) intravenous coinfusion of the ABCB1 inhibitor tariquidar (4 mg/kg/h). Metabolite-corrected arterial input functions were generated to estimate the regional volume of distribution (V T), as well as the influx (K 1) and efflux (k 2) rate constants, using a 1-tissue-compartment model. Modeling outcome parameters were correlated with image-derived parameters, that is, areas under the regional time-activity curves (AUCs) from 0 to 30 min and from 30 to 60 min (SUV⋅min) and the elimination slope (k E; min-1) from 30 to 60 min. Results: Tariquidar significantly increased the brain distribution of 11C-metoclopramide (V T = 4.3 ± 0.5 mL/cm3 and 8.7 ± 0.5 mL/cm3 for baseline and ABCB1 inhibition conditions, respectively, P < 0.001), with a 1.28-fold increase in K 1 (P < 0.05) and a 1.64-fold decrease in k 2 (P < 0.001). The effect of tariquidar was homogeneous across different brain regions. The parameters most sensitive to ABCB1 inhibition were V T (2.02-fold increase) and AUC from 30 to 60 min (2.02-fold increase). V T correlated significantly (P < 0.0001) with AUC from 30 to 60 min (r 2 = 0.95), with AUC from 0 to 30 min (r 2 = 0.87), and with k E (r 2 = 0.62). Conclusion: 11C-metoclopramide PET imaging revealed the relative importance of both the influx hindrance and the efflux enhancement components of ABCB1 in a relevant model of the human BBB. The overall impact of ABCB1 on drug delivery to the brain can be noninvasively estimated from image-derived outcome parameters without the need for an arterial input function.
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Affiliation(s)
- Sylvain Auvity
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, INSERM, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Fabien Caillé
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, INSERM, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Solène Marie
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, INSERM, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Catriona Wimberley
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, INSERM, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.,Biomedical Systems, Center for Health and Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria; and
| | - Irène Buvat
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, INSERM, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Sébastien Goutal
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, INSERM, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France.,MIRCen, CEA and CNRS-UMR9199, Université Paris Sud, Fontenay-aux-Roses, France
| | - Nicolas Tournier
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, INSERM, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
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36
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Liu H, Dong K, Zhang W, Summerfield SG, Terstappen GC. Prediction of brain:blood unbound concentration ratios in CNS drug discovery employing in silico and in vitro model systems. Drug Discov Today 2018; 23:1357-1372. [PMID: 29548981 DOI: 10.1016/j.drudis.2018.03.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/03/2018] [Accepted: 03/08/2018] [Indexed: 12/15/2022]
Abstract
Recent years have seen a paradigm shift away from optimizing the brain:blood concentration ratio toward the more relevant brain:blood unbound concentration ratio (Kp,uu,br) in CNS drug discovery. Here, we review the recent developments in the in silico and in vitro model systems to predict the Kp,uu,br of discovery compounds with special emphasis on the in-vitro-in-vivo correlation. We also discuss clinical 'translation' of rodent Kp,uu,br and highlight the future directions for improvement in brain penetration prediction. Important in this regard are in silico Kp,uu,br models built on larger datasets of high quality, calibration and deeper understanding of experimental in vitro transporter systems, and better understanding of blood-brain barrier transporters and their in vivo relevance aside from P-gp and BCRP.
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Affiliation(s)
- Houfu Liu
- Platform Technology and Science, GlaxoSmithKline R&D Center, Shanghai, China.
| | - Kelly Dong
- Platform Technology and Science, GlaxoSmithKline R&D Center, Shanghai, China
| | - Wandong Zhang
- Platform Technology and Science, GlaxoSmithKline R&D Center, Shanghai, China
| | - Scott G Summerfield
- Bioanalysis, Immunogenicity and Biomarker, Platform Technology and Science, GlaxoSmithKline, Ware, UK
| | - Georg C Terstappen
- Platform Technology and Science, GlaxoSmithKline R&D Center, Shanghai, China
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37
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A Critical View on In Vitro Analysis of P-glycoprotein (P-gp) Transport Kinetics. J Pharm Sci 2017; 106:2257-2264. [DOI: 10.1016/j.xphs.2017.04.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/12/2017] [Accepted: 04/12/2017] [Indexed: 01/11/2023]
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38
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Terasaki T. Quantitative Targeted Absolute Proteomics (QTAP)-based Pharmacoproteomics: The Importance of International Collaboration. YAKUGAKU ZASSHI 2017; 137:685-689. [PMID: 28566574 DOI: 10.1248/yakushi.16-00250-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Proteins such as membrane transporters, enzymes, receptors and channels play key roles in drug absorption, distribution, metabolism, and elimination, and also influence efficacy and the likelihood of adverse reactions. Therefore, if we can quantify the activities of these molecules, it may be possible to predict the behavior of candidate drugs in humans in disease states; such methodology would be extremely helpful for efficient drug development. We have developed an in silico method to select appropriate peptides within amino acid sequences in order to quantify targeted proteins by LC-MS/MS in selected reaction monitoring (SRM) mode. We have applied this method for the quantification of functional proteins in order to validate various in vitro and in vivo models. We found fairly good correlation between protein amounts and the enzymatic activities of microsomal cytochrome P450 (CYP) isoforms and uridine 5'-diphospho-glucuronosyltransferase (UGT) in human liver, as well as between protein amounts and the transport activities of multiple transporters in human lung cells. These results suggest that protein quantification can be useful in predicting activity. We have applied this approach to evaluate the usefulness and limitations of an immortalized human brain capillary endothelial cell line (D3 cells) and a P-glycoprotein humanized (hMDR1) mouse model by comparing the amounts of functional proteins in the models with those in isolated capillaries from human brain. In order to obtain sufficient human tissue specimens for further studies leading to clinical applications, we believe that international collaboration will be crucial.
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Affiliation(s)
- Tetsuya Terasaki
- Membrane Transport and Drug Targeting Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University
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Liu H, Huang L, Li Y, Fu T, Sun X, Zhang YY, Gao R, Chen Q, Zhang W, Sahi J, Summerfield S, Dong K. Correlation between Membrane Protein Expression Levels and Transcellular Transport Activity for Breast Cancer Resistance Protein. Drug Metab Dispos 2017; 45:449-456. [DOI: 10.1124/dmd.116.074245] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/10/2017] [Indexed: 01/16/2023] Open
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40
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Akazawa T, Uchida Y, Tachikawa M, Ohtsuki S, Terasaki T. Quantitative Targeted Absolute Proteomics of Transporters and Pharmacoproteomics-Based Reconstruction of P-Glycoprotein Function in Mouse Small Intestine. Mol Pharm 2016; 13:2443-56. [PMID: 27276518 DOI: 10.1021/acs.molpharmaceut.6b00196] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The purpose of this study was to investigate whether a pharmacokinetic model integrating in vitro mdr1a efflux activity (which we previously reported) with in vitro/in vivo differences in protein expression level can reconstruct intestinal mdr1a function. In situ intestinal permeability-surface area product ratio between wild-type and mdr1a/1b (-/-) mice is one of the parameters used to describe intestinal mdr1a function. The reconstructed ratios of six mdr1a substrates (dexamethasone, digoxin, loperamide, quinidine, verapamil, vinblastine) and one nonsubstrate (diazepam) were consistent with the observed values reported by Adachi et al. within 2.1-fold difference. Thus, intestinal mdr1a function can be reconstructed by our pharmacoproteomic modeling approach. Furthermore, we evaluated regional differences in protein expression levels of mouse intestinal transporters. Sixteen (mdr1a, mrp4, bcrp, abcg5, abcg8, glut1, 4f2hc, sglt1, lat2, pept1, mct1, slc22a18, ostβ, villin1, Na(+)/K(+)-ATPase, γ-gtp) out of 46 target molecules were detected by employing our established quantitative targeted absolute proteomics technique. The protein expression amounts of mdr1a and bcrp increased progressively from duodenum to ileum. Sglt1, lat2, and 4f2hc were highly expressed in jejunum and ileum. Mct1 and ostβ were highly expressed in ileum. The quantitative expression profiles established here should be helpful to understand and predict intestinal transporter functions.
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Affiliation(s)
- Takanori Akazawa
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Yasuo Uchida
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Masanori Tachikawa
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Sumio Ohtsuki
- Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University , 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Tetsuya Terasaki
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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41
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Damont A, Goutal S, Auvity S, Valette H, Kuhnast B, Saba W, Tournier N. Imaging the impact of cyclosporin A and dipyridamole on P-glycoprotein (ABCB1) function at the blood-brain barrier: A [(11)C]-N-desmethyl-loperamide PET study in nonhuman primates. Eur J Pharm Sci 2016; 91:98-104. [PMID: 27283486 DOI: 10.1016/j.ejps.2016.06.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 05/31/2016] [Accepted: 06/05/2016] [Indexed: 10/21/2022]
Abstract
Cyclosporin A (CsA) and dipyridamole (DPy) are potent inhibitors of the P-glycoprotein (P-gp; ABCB1) in vitro. Their efficacy at inhibiting P-gp at the blood-brain barrier (BBB) is difficult to predict. Efficient and readily available (i.e. marketed) P-gp inhibitors are needed as probes to investigate the role of P-gp at the human BBB. In this study, the P-gp inhibition potency at the BBB of therapeutic doses of CsA or DPy was evaluated in baboons using Positron Emission Tomography (PET) imaging with [(11)C]-N-desmethyl-loperamide ([(11)C]dLop), a radiolabeled P-gp substrate. The preparation of dLop as authentic standard and [(11)C]dLop as radiotracer were revisited so as to improve their production yields. [(11)C]dLop PET imaging was performed in the absence (n=3, baseline condition) and the presence of CsA (15mg/kg/h i.v., n=3). Three animals were injected with i.v. DPy at either 0.56 or 0.96 or 2mg/kg (n=1), corresponding to the usual, maximal and twice the maximal dose in patients, respectively, administered immediately before PET. [(11)C]dLop brain kinetics as well as [(11)C]dLop kinetics and radiometabolites in arterial plasma were measured to calculate [(11)C]dLop area-under the time-activity curve from 10 to 30min in the brain (AUCbrain) and in plasma (AUCplasma). [(11)C]dLop brain uptake was described by AUCR=AUCbrain/AUCplasma. CsA as well as DPy did not measurably influence [(11)C]dLop plasma kinetics and metabolism. Baseline AUCR (0.85±0.29) was significantly enhanced in the presence of CsA (AUCR=10.8±3.6). Injection of pharmacologic dose of DPy did not enhance [(11)C]dLop brain distribution with AUCR being 1.2, 0.9 and 1.1 after administration of 0.56, 0.96 and 2mg/kg DPy doses, respectively. We used [(11)C]dLop PET imaging in baboons, a relevant in vivo model of P-gp function at the BBB, to show the P-gp inhibition potency of therapeutic dose CsA. Despite in vitro P-gp inhibition potency, usual doses DPy are not likely to inhibit P-gp function at the BBB.
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Affiliation(s)
- Annelaure Damont
- Imagerie Moléculaire In Vivo, IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Sébastien Goutal
- Imagerie Moléculaire In Vivo, IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Sylvain Auvity
- Imagerie Moléculaire In Vivo, IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Héric Valette
- Imagerie Moléculaire In Vivo, IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Bertrand Kuhnast
- Imagerie Moléculaire In Vivo, IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Wadad Saba
- Imagerie Moléculaire In Vivo, IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Nicolas Tournier
- Imagerie Moléculaire In Vivo, IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France.
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42
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Miyata KI, Nakagawa Y, Kimura Y, Ueda K, Akamatsu M. In vitro and in vivo evaluations of the P-glycoprotein-mediated efflux of dibenzoylhydrazines. Toxicol Appl Pharmacol 2016; 298:40-7. [DOI: 10.1016/j.taap.2016.03.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 02/25/2016] [Accepted: 03/15/2016] [Indexed: 12/21/2022]
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43
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Shen H, Liu T, Jiang H, Titsch C, Taylor K, Kandoussi H, Qiu X, Chen C, Sukrutharaj S, Kuit K, Mintier G, Krishnamurthy P, Fancher RM, Zeng J, Rodrigues AD, Marathe P, Lai Y. Cynomolgus Monkey as a Clinically Relevant Model to Study Transport Involving Renal Organic Cation Transporters: In Vitro and In Vivo Evaluation. Drug Metab Dispos 2015; 44:238-49. [DOI: 10.1124/dmd.115.066852] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 11/19/2015] [Indexed: 01/12/2023] Open
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44
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Uchida Y, Zhang Z, Tachikawa M, Terasaki T. Quantitative targeted absolute proteomics of rat blood-cerebrospinal fluid barrier transporters: comparison with a human specimen. J Neurochem 2015; 134:1104-15. [DOI: 10.1111/jnc.13147] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 04/09/2015] [Accepted: 04/13/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Yasuo Uchida
- Graduate School of Pharmaceutical Sciences; Tohoku University; Sendai Japan
| | - Zhengyu Zhang
- Graduate School of Pharmaceutical Sciences; Tohoku University; Sendai Japan
| | - Masanori Tachikawa
- Graduate School of Pharmaceutical Sciences; Tohoku University; Sendai Japan
| | - Tetsuya Terasaki
- Graduate School of Pharmaceutical Sciences; Tohoku University; Sendai Japan
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45
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Liu H, Yu N, Lu S, Ito S, Zhang X, Prasad B, He E, Lu X, Li Y, Wang F, Xu H, An G, Unadkat JD, Kusuhara H, Sugiyama Y, Sahi J. Solute Carrier Family of the Organic Anion-Transporting Polypeptides 1A2– Madin-Darby Canine Kidney II: A Promising In Vitro System to Understand the Role of Organic Anion-Transporting Polypeptide 1A2 in Blood-Brain Barrier Drug Penetration. Drug Metab Dispos 2015; 43:1008-18. [DOI: 10.1124/dmd.115.064170] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Accepted: 04/22/2015] [Indexed: 12/12/2022] Open
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46
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Heikkinen AT, Lignet F, Cutler P, Parrott N. The role of quantitative ADME proteomics to support construction of physiologically based pharmacokinetic models for use in small molecule drug development. Proteomics Clin Appl 2015; 9:732-44. [DOI: 10.1002/prca.201400147] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 01/16/2015] [Accepted: 02/05/2015] [Indexed: 01/26/2023]
Affiliation(s)
- Aki T. Heikkinen
- School of Pharmacy; Faculty of Health Sciences; University of Eastern Finland; Kuopio Finland
| | - Floriane Lignet
- Pharmaceutical Sciences; Pharmaceutical Research & Early Development; Roche Innovation Center Basel; Basel Switzerland
| | - Paul Cutler
- Pharmaceutical Sciences; Pharmaceutical Research & Early Development; Roche Innovation Center Basel; Basel Switzerland
| | - Neil Parrott
- Pharmaceutical Sciences; Pharmaceutical Research & Early Development; Roche Innovation Center Basel; Basel Switzerland
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47
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Prasad B, Unadkat JD. The concept of fraction of drug transported (ft ) with special emphasis on BBB efflux of CNS and antiretroviral drugs. Clin Pharmacol Ther 2015; 97:320-3. [PMID: 25669655 DOI: 10.1002/cpt.72] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 01/05/2015] [Accepted: 01/06/2015] [Indexed: 01/27/2023]
Abstract
The fraction of drug transported (ft) into or out of a tissue is a concept useful to understand the impact of transporters on absorption, distribution, metabolism, and excretion (ADME) and tissue distribution of a drug. Here, ft is utilized to explain the impact of transporters on central nervous system (CNS) distribution of drugs, drug interactions (DDI), and to predict the unbound brain concentration (Cu,b) of the drug. The latter is important to ascertain if Cu,b is sufficient for efficacy.
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Affiliation(s)
- B Prasad
- Department of Pharmaceutics, University of Washington, Seattle, Washington, USA
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48
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Uchida Y, Ohtsuki S, Terasaki T. Pharmacoproteomics-Based Reconstruction of In Vivo P-Glycoprotein Function at Blood-Brain Barrier and Brain Distribution of Substrate Verapamil in Pentylenetetrazole-Kindled Epilepsy, Spontaneous Epilepsy, and Phenytoin Treatment Models. Drug Metab Dispos 2014; 42:1719-26. [DOI: 10.1124/dmd.114.059055] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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