1
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F Martins ML, Heydari P, Li W, Martínez-Chávez A, El Yattouti M, Lebre MC, Beijnen JH, Schinkel AH. The role of drug efflux and uptake transporters in the plasma pharmacokinetics and tissue disposition of morphine and its main metabolites. Toxicol Appl Pharmacol 2024; 490:117040. [PMID: 39032800 DOI: 10.1016/j.taap.2024.117040] [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: 05/27/2024] [Revised: 07/04/2024] [Accepted: 07/15/2024] [Indexed: 07/23/2024]
Abstract
Morphine is a widely used opioid for the treatment of pain. Differences in drug transporter expression and activity may contribute to variability in morphine pharmacokinetics and response. Using appropriate mouse models, we investigated the impact of the efflux transporters ABCB1 and ABCG2 and the OATP uptake transporters on the pharmacokinetics of morphine, morphine-3-glucuronide (M3G), and M6G. Upon subcutaneous administration of morphine, its plasma exposure in Abcb1a/1b-/-;Abcg2-/--, Abcb1a/1b-/-;Abcg2-/-;Oatp1a/1b-/-;Oatp2b1-/- (Bab12), and Oatp1a/1b-/-;Oatp2b1-/- mice was similar to that found in wild-type mice. Forty minutes after dosing, morphine brain accumulation increased by 2-fold when mouse (m)Abcb1 and mAbcg2 were ablated. Relative recovery of morphine in small intestinal content was significantly reduced in all the knockout strains. In the absence of mOatp1a/1b and mOatp2b1, plasma levels of M3G were markedly increased, suggesting a lower elimination rate. Moreover, Oatp-deficient mice displayed reduced hepatic and intestinal M3G accumulation. Mouse Oatps similarly affected plasma and tissue disposition of subcutaneously administered M6G. Human OATP1B1/1B3 transporters modestly contribute to the liver accumulation of M6G. In summary, mAbcb1, in combination with mAbcg2, limits morphine brain penetration and its net intestinal absorption. Variation in ABCB1 activity due to genetic polymorphisms/mutations and/or environmental factors might, therefore, partially affect morphine tissue exposure in patients. The ablation of mOatp1a/1b increases plasma exposure and decreases the liver and small intestinal disposition of M3G and M6G. Since the contribution of human OATP1B1/1B3 to M6G liver uptake was quite modest, the risks of undesirable drug interactions or interindividual variation related to OATP activity are likely negligible.
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Affiliation(s)
- Margarida L F Martins
- The Netherlands Cancer Institute, Division of Pharmacology, Amsterdam, the Netherlands
| | - Paniz Heydari
- The Netherlands Cancer Institute, Division of Pharmacology, Amsterdam, the Netherlands; Utrecht University, Faculty of Science, Department of Pharmaceutical Sciences, Division of Pharmacology, Utrecht, the Netherlands
| | - Wenlong Li
- The Netherlands Cancer Institute, Division of Pharmacology, Amsterdam, the Netherlands
| | - Alejandra Martínez-Chávez
- The Netherlands Cancer Institute, Division of Pharmacology, Amsterdam, the Netherlands; The Netherlands Cancer Institute, Department of Pharmacy & Pharmacology, Amsterdam, the Netherlands
| | - Malika El Yattouti
- The Netherlands Cancer Institute, Department of Pharmacy & Pharmacology, Amsterdam, the Netherlands
| | - Maria C Lebre
- The Netherlands Cancer Institute, Division of Pharmacology, Amsterdam, the Netherlands
| | - Jos H Beijnen
- The Netherlands Cancer Institute, Division of Pharmacology, Amsterdam, the Netherlands; The Netherlands Cancer Institute, Department of Pharmacy & Pharmacology, Amsterdam, the Netherlands; Utrecht University, Faculty of Science, Department of Pharmaceutical Sciences, Division of Pharmacoepidemiology & Clinical Pharmacology, Utrecht, the Netherlands
| | - Alfred H Schinkel
- The Netherlands Cancer Institute, Division of Pharmacology, Amsterdam, the Netherlands.
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2
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Ramsay E, Montaser AB, Niitsu K, Urtti A, Auriola S, Huttunen KM, Uchida Y, Kidron H, Terasaki T. Transporter Protein Expression of Corneal Epithelium in Rabbit and Porcine: Evaluation of Models for Ocular Drug Transport Study. Mol Pharm 2024; 21:3204-3217. [PMID: 38809137 DOI: 10.1021/acs.molpharmaceut.3c01210] [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] [Indexed: 05/30/2024]
Abstract
The transcorneal route is the main entry route for drugs to the intraocular parts, after topical administration. The outer surface, the corneal epithelium (CE), forms the rate-limiting barrier for drug permeability. Information about the role and protein expression of drug and amino acid transporter proteins in the CE is sparse and lacking. The aim of our study was to characterize transporter protein expression in rabbit and porcine CE to better understand potential drug and nutrient absorption after topical administration. Proteins, mainly Abc and Slc transporters, were characterized with quantitative targeted absolute proteomics and global untargeted proteomics methods. In the rabbit CE, 24 of 48 proteins were detected in the targeted approach, and 21 of these were quantified. In the porcine CE, 26 of 58 proteins were detected in the targeted approach, and 20 of these were quantified. Among these, 15 proteins were quantified in both animals: 4f2hc (Slc3a2), Aqp0, Asct1 (Slc1a4), Asct2 (Slc1a5), Glut1 (Slc2a1), Hmit (Slc2a13), Insr, Lat1 (Slc7a5), Mct1 (Slc16a1), Mct2 (Slc16a7), Mct4 (Slc16a3), Mrp 4 (Abcc4), Na+/K+-ATPase, Oatp3a1 (Slco3a1), and Snat2 (Slc38a2). Overall, the global proteomics results supported the targeted proteomics results. Organic anion transporting polypeptide Oatp3a1 was detected and quantified for the first time in both rabbit (1.4 ± 0.4 fmol/cm2) and porcine (11.1 ± 5.3 fmol/cm2) CE. High expression levels were observed for L-type amino acid transporter, Lat1, which was quantified with newly selected extracellular domain peptides in rabbit (48.9 ± 11.8 fmol/cm2) and porcine (37.6 ± 11.5 fmol/cm2) CE. The knowledge of transporter protein expression in ocular barriers is a key factor in the successful design of new ocular drugs, pharmacokinetic modeling, understanding ocular diseases, and the translation to human.
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Affiliation(s)
- Eva Ramsay
- Drug Research Programme, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00014 Helsinki, Finland
| | - Ahmed B Montaser
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
| | - Kanako Niitsu
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
| | - Arto Urtti
- Drug Research Programme, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00014 Helsinki, Finland
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
| | - Seppo Auriola
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
| | - Kristiina M Huttunen
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
| | - Yasuo Uchida
- Department of Molecular Systems Pharmaceutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-0037, Japan
| | - Heidi Kidron
- Drug Research Programme, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00014 Helsinki, Finland
| | - Tetsuya Terasaki
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
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3
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Granulo N, Sosnin S, Digles D, Ecker GF. The macrocycle inhibitor landscape of SLC-transporter. Mol Inform 2024; 43:e202300287. [PMID: 38288682 DOI: 10.1002/minf.202300287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/08/2024] [Accepted: 01/29/2024] [Indexed: 03/06/2024]
Abstract
In the past years the interest in Solute Carrier Transporters (SLC) has increased due to their potential as drug targets. At the same time, macrocycles demonstrated promising activities as therapeutic agents. However, the overall macrocycle/SLC-transporter interaction landscape has not been fully revealed yet. In this study, we present a statistical analysis of macrocycles with measured activity against SLC-transporter. Using a data mining pipeline based on KNIME retrieved in total 825 bioactivity data points of macrocycles interacting with SLC-transporter. For further analysis of the SLC inhibitor profiles we developed an interactive KNIME workflow as well as an interactive map of the chemical space coverage utilizing parametric t-SNE models. The parametric t-SNE models provide a good discrimination ability among several corresponding SLC subfamilies' targets. The KNIME workflow, the dataset, and the visualization tool are freely available to the community.
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Affiliation(s)
- Nejra Granulo
- Department of Pharmaceutical Sciences, University of Vienna, Josef Holaubek Platz 2, 1090, Vienna, Austria
- Research Platform NeGeMac-Next Generation Macrocycles to Address Challenging Protein Interfaces, University of Vienna, 1090, Vienna, Austria
| | - Sergey Sosnin
- Department of Pharmaceutical Sciences, University of Vienna, Josef Holaubek Platz 2, 1090, Vienna, Austria
| | - Daniela Digles
- Department of Pharmaceutical Sciences, University of Vienna, Josef Holaubek Platz 2, 1090, Vienna, Austria
| | - Gerhard F Ecker
- Department of Pharmaceutical Sciences, University of Vienna, Josef Holaubek Platz 2, 1090, Vienna, Austria
- Research Platform NeGeMac-Next Generation Macrocycles to Address Challenging Protein Interfaces, University of Vienna, 1090, Vienna, Austria
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4
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Alshogran OY, Dodeja P, Albukhaytan H, Laffey T, Chaphekar N, Caritis S, Shaik IH, Venkataramanan R. Drugs in Human Milk Part 1: Practical and Analytical Considerations in Measuring Drugs and Metabolites in Human Milk. Clin Pharmacokinet 2024; 63:561-588. [PMID: 38748090 DOI: 10.1007/s40262-024-01374-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2024] [Indexed: 05/22/2024]
Abstract
Human milk is a remarkable biofluid that provides essential nutrients and immune protection to newborns. Breastfeeding women consuming medications could pass the drug through their milk to neonates. Drugs can be transferred to human milk by passive diffusion or active transport. The physicochemical properties of the drug largely impact the extent of drug transfer into human milk. A comprehensive understanding of the physiology of human milk formation, composition of milk, mechanisms of drug transfer, and factors influencing drug transfer into human milk is critical for appropriate selection and use of medications in lactating women. Quantification of drugs in the milk is essential for assessing the safety of pharmacotherapy during lactation. This can be achieved by developing specific, sensitive, and reproducible analytical methods using techniques such as liquid chromatography coupled with mass spectrometry. The present review briefly discusses the physiology of human milk formation, composition of human milk, mechanisms of drug transfer into human milk, and factors influencing transfer of drugs from blood to milk. We further expand upon and critically evaluate the existing analytical approaches/assays used for the quantification of drugs in human milk.
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Affiliation(s)
- Osama Y Alshogran
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Prerna Dodeja
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, USA
| | - Hamdan Albukhaytan
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, USA
| | - Taylor Laffey
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, USA
| | - Nupur Chaphekar
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, USA
| | - Steve Caritis
- Department of Obstetrics, Gynecology and Reproductive Sciences, School of Medicine, UPMC Magee-Women's Hospital, Pittsburgh, PA, USA
| | - Imam H Shaik
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, USA.
- Department of Pharmacy and Therapeutics, School of Pharmacy, University of Pittsburgh, 3501 Terrace Street, Room 7406, Salk Hall, Pittsburgh, PA, 15261, USA.
| | - Raman Venkataramanan
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, USA.
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
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5
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Kaci H, Dombi Á, Gömbös P, Szabó A, Bakos É, Özvegy-Laczka C, Poór M. Interaction of mycotoxins zearalenone, α-zearalenol, and β-zearalenol with cytochrome P450 (CYP1A2, 2C9, 2C19, 2D6, and 3A4) enzymes and organic anion transporting polypeptides (OATP1A2, OATP1B1, OATP1B3, and OATP2B1). Toxicol In Vitro 2024; 96:105789. [PMID: 38341109 DOI: 10.1016/j.tiv.2024.105789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/05/2024] [Accepted: 02/07/2024] [Indexed: 02/12/2024]
Abstract
Zearalenone (ZEN) is a mycoestrogen produced by Fusarium fungi. ZEN is a frequent contaminant in cereal-based products, representing significant health threat. The major reduced metabolites of ZEN are α-zearalenol (α-ZEL) and β-zearalenol (β-ZEL). Since the toxicokinetic interactions of ZEN/ZELs with cytochrome P450 enzymes (CYPs) and organic anion transporting polypeptides (OATPs) have been barely characterized, we examined these interactions applying in vitro models. ZEN and ZELs were relatively strong inhibitors of CYP3A4 and moderate inhibitors of CYP1A2 and CYP2C9. Both CYP1A2 and CYP3A4 decreased ZEN and β-ZEL concentrations in depletion assays, while only CYP1A2 reduced α-ZEL levels. OATPs tested were strongly or moderately inhibited by ZEN and ZELs; however, these mycotoxins did not show higher cytotoxicity in OATP-overexpressing cells. Our results help the deeper understanding of the toxicokinetic/pharmacokinetic interactions of ZEN, α-ZEL, and β-ZEL.
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Affiliation(s)
- Hana Kaci
- Drug Resistance Research Group, Institute of Enzymology, Research Centre for Natural Sciences, HUN-REN, Magyar tudósok krt. 2, Budapest H-1117, Hungary; Doctoral School of Biology, Institute of Biology, Eötvös Loránd University, Pázmány P. stny. 1/C, Budapest H-1117, Hungary
| | - Ágnes Dombi
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, Pécs H-7624, Hungary
| | - Patrik Gömbös
- Institute of Physiology and Nutrition, Department of Physiology and Animal Health, Agribiotechnology and Precision Breeding for Food Security National Laboratory, Hungarian University of Agriculture and Life Sciences, Gödöllő H-2103, Hungary
| | - András Szabó
- Institute of Physiology and Nutrition, Department of Physiology and Animal Health, Agribiotechnology and Precision Breeding for Food Security National Laboratory, Hungarian University of Agriculture and Life Sciences, Gödöllő H-2103, Hungary; HUN-REN-MATE Mycotoxins in the Food Chain Research Group, Hungarian University of Agriculture and Life Sciences, Guba Sándor Str. 40, Kaposvár 7400, Hungary
| | - Éva Bakos
- Drug Resistance Research Group, Institute of Enzymology, Research Centre for Natural Sciences, HUN-REN, Magyar tudósok krt. 2, Budapest H-1117, Hungary
| | - Csilla Özvegy-Laczka
- Drug Resistance Research Group, Institute of Enzymology, Research Centre for Natural Sciences, HUN-REN, Magyar tudósok krt. 2, Budapest H-1117, Hungary
| | - Miklós Poór
- Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság útja 13, Pécs H-7624, Hungary; Molecular Medicine Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs H-7624, Hungary.
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6
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Laddha AP, Dzielak L, Lewis C, Xue R, Manautou JE. Impact of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) on the expression and function of hepatobiliary transporters: A comprehensive mechanistic review. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167037. [PMID: 38295624 DOI: 10.1016/j.bbadis.2024.167037] [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: 09/07/2023] [Revised: 01/11/2024] [Accepted: 01/20/2024] [Indexed: 02/02/2024]
Abstract
The liver plays a central role in the biotransformation and disposition of endogenous molecules and xenobiotics. In addition to drug-metabolizing enzymes, transporter proteins are key determinants of drug hepatic clearance. Hepatic transporters are transmembrane proteins that facilitate the movement of chemicals between sinusoidal blood and hepatocytes. Other drug transporters translocate molecules from hepatocytes into bile canaliculi for biliary excretion. The formers are known as basolateral, while the latter are known as canalicular transporters. Also, these transporters are classified into two super-families, the solute carrier transporter (SLC) and the adenosine triphosphate (ATP)-binding cassette (ABC) transporter. The expression and function of transporters involve complex regulatory mechanisms, which are contributing factors to interindividual variability in drug pharmacokinetics and disposition. A considerable number of liver diseases are known to alter the expression and function of drug transporters. Among them, non-alcoholic fatty liver disease (NAFLD) is a chronic condition with a rapidly increasing incidence worldwide. NAFLD, recently reclassified as metabolic dysfunction-associated steatotic liver disease (MASLD), is a disease continuum that includes steatosis with or without mild inflammation (NASH), and potentially neuroinflammatory pathology. NASH is additionally characterized by the presence of hepatocellular injury. During NAFLD and NASH, drug transporters exhibit altered expression and function, leading to altered drug pharmacokinetics and pharmacodynamics, thus increasing the risk of adverse drug reactions. The purpose of the present review is to provide comprehensive mechanistic information on the expression and function of hepatic transporters under fatty liver conditions and hence, the impact on the pharmacokinetic profiles of certain drugs from the available pre-clinical and clinical literature.
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Affiliation(s)
- Ankit P Laddha
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA
| | - Lindsey Dzielak
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA; Non-Clinical Drug Safety (NDS) Department, Boehringer Ingelheim Pharmaceutical Co., Ridgefield, CT, USA
| | - Cedric Lewis
- Non-Clinical Drug Safety (NDS) Department, Boehringer Ingelheim Pharmaceutical Co., Ridgefield, CT, USA
| | - Raymond Xue
- Charles River Laboratories, Inc., Shrewsbury, MA, USA
| | - José E Manautou
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA.
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7
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Ronaldson PT, Davis TP. Blood-brain barrier transporters: a translational consideration for CNS delivery of neurotherapeutics. Expert Opin Drug Deliv 2024; 21:71-89. [PMID: 38217410 PMCID: PMC10842757 DOI: 10.1080/17425247.2024.2306138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 01/12/2024] [Indexed: 01/15/2024]
Abstract
INTRODUCTION Successful neuropharmacology requires optimization of CNS drug delivery and, by extension, free drug concentrations at brain molecular targets. Detailed assessment of blood-brain barrier (BBB) physiological characteristics is necessary to achieve this goal. The 'next frontier' in CNS drug delivery is targeting BBB uptake transporters, an approach that requires evaluation of brain endothelial cell transport processes so that effective drug accumulation and improved therapeutic efficacy can occur. AREAS COVERED BBB permeability of drugs is governed by tight junction protein complexes (i.e., physical barrier) and transporters/enzymes (i.e., biochemical barrier). For most therapeutics, a component of blood-to-brain transport involves passive transcellular diffusion. Small molecule drugs that do not possess acceptable physicochemical characteristics for passive permeability may utilize putative membrane transporters for CNS uptake. While both uptake and efflux transport mechanisms are expressed at the brain microvascular endothelium, uptake transporters can be targeted for optimization of brain drug delivery and improved treatment of neurological disease states. EXPERT OPINION Uptake transporters represent a unique opportunity to optimize brain drug delivery by leveraging the endogenous biology of the BBB. A rigorous understanding of these transporters is required to improve translation from the bench to clinical trials and stimulate the development of new treatment paradigms for neurological diseases.
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Affiliation(s)
| | - Thomas P. Davis
- Department of Pharmacology, University of Arizona College of Medicine
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8
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Biali M, Auvity S, Cisternino S, Smirnova M, Hacker M, Zeitlinger M, Mairinger S, Tournier N, Bauer M, Langer O. Dissimilar Effect of P-Glycoprotein and Breast Cancer Resistance Protein Inhibition on the Distribution of Erlotinib to the Retina and Brain in Humans and Mice. Mol Pharm 2023; 20:5877-5887. [PMID: 37883694 PMCID: PMC10630959 DOI: 10.1021/acs.molpharmaceut.3c00715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/04/2023] [Accepted: 10/04/2023] [Indexed: 10/28/2023]
Abstract
P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP) are two ATP-binding cassette efflux transporters that are coexpressed at the human blood-brain barrier (BBB) and blood-retina barrier (BRB). While pharmacological inhibition of P-gp and/or BCRP results in increased brain distribution of dual P-gp/BCRP substrate drugs, such as the tyrosine kinase inhibitor erlotinib, the effect of P-gp and/or BCRP inhibition on the retinal distribution of such drugs has hardly been investigated. In this study, we used positron emission tomography (PET) imaging to assess the effect of transporter inhibition on the distribution of [11C]erlotinib to the human retina and brain. Twenty two healthy volunteers underwent two PET scans after intravenous (i.v.) injection of a microdose (<5 μg) of [11C]erlotinib, a baseline scan, and a second scan either with concurrent i.v. infusion of tariquidar to inhibit P-gp (n = 5) or after oral intake of single ascending doses of erlotinib (300 mg, 650 mg, or 1000 mg, n = 17) to saturate erlotinib transport. In addition, transport of [3H]erlotinib to the retina and brain was assessed in mice by in situ carotid perfusion under various drug transporter inhibition settings. In comparison to the baseline PET scan, coadministration of tariquidar or erlotinib led to a significant decrease of [11C]erlotinib total volume of distribution (VT) in the human retina by -25 ± 8% (p ≤ 0.05) and -41 ± 16% (p ≤ 0.001), respectively. In contrast, erlotinib intake led to a significant increase in [11C]erlotinib VT in the human brain (+20 ± 16%, p ≤ 0.001), while administration of tariquidar did not result in any significant changes. In situ carotid perfusion experiments showed that both P-gp and BCRP significantly limit the distribution of erlotinib to the mouse retina and brain but revealed a similar discordant effect at the mouse BRB and BBB following co-perfusion with tariquidar and erlotinib as in humans. Co-perfusion with prototypical inhibitors of solute carrier transporters did not reveal a significant contribution of organic cation transporters (e.g., OCTs and OCTNs) and organic anion-transporting polypeptides (e.g., OATP2B1) to the retinal and cerebral distribution of erlotinib. In conclusion, we observed a dissimilar effect after P-gp and/or BCRP inhibition on the retinal and cerebral distribution of [11C]erlotinib. The exact mechanism for this discrepancy remains unclear but may be related to the function of an unidentified erlotinib uptake carrier sensitive to tariquidar inhibition at the BRB. Our study highlights the great potential of PET to study drug distribution to the human retina and to assess the functional impact of membrane transporters on ocular drug distribution.
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Affiliation(s)
- Myriam
El Biali
- Department
of Clinical Pharmacology, Medical University
of Vienna, 1090 Vienna, Austria
| | - Sylvain Auvity
- Inserm
UMRS1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université Paris Cité, F-75006 Paris, France
- Service
Pharmacie, Assistance Publique-Hôpitaux de Paris, Hôpital Universitaire-Necker-Enfants Malades, F-75015 Paris, France
| | - Salvatore Cisternino
- Inserm
UMRS1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université Paris Cité, F-75006 Paris, France
- Service
Pharmacie, Assistance Publique-Hôpitaux de Paris, Hôpital Universitaire-Necker-Enfants Malades, F-75015 Paris, France
| | - Maria Smirnova
- Inserm
UMRS1144, Optimisation Thérapeutique en Neuropsychopharmacologie, Université Paris Cité, F-75006 Paris, France
| | - Marcus Hacker
- Division
of Nuclear Medicine, Department of Biomedical Imaging and Image-guided
Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Markus Zeitlinger
- Department
of Clinical Pharmacology, Medical University
of Vienna, 1090 Vienna, Austria
| | - Severin Mairinger
- Department
of Clinical Pharmacology, Medical University
of Vienna, 1090 Vienna, Austria
- Division
of Nuclear Medicine, Department of Biomedical Imaging and Image-guided
Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Nicolas Tournier
- Laboratoire
d’Imagerie Biomédicale Multimodale (BioMaps), CEA, CNRS,
Inserm, Service Hospitalier Frédéric Joliot, Université Paris-Saclay, 91401 Orsay, France
| | - Martin Bauer
- Department
of Clinical Pharmacology, Medical University
of Vienna, 1090 Vienna, Austria
| | - Oliver Langer
- Department
of Clinical Pharmacology, Medical University
of Vienna, 1090 Vienna, Austria
- Division
of Nuclear Medicine, Department of Biomedical Imaging and Image-guided
Therapy, Medical University of Vienna, 1090 Vienna, Austria
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Ramsay E, Lajunen T, Bhattacharya M, Reinisalo M, Rilla K, Kidron H, Terasaki T, Urtti A. Selective drug delivery to the retinal cells: Biological barriers and avenues. J Control Release 2023; 361:1-19. [PMID: 37481214 DOI: 10.1016/j.jconrel.2023.07.028] [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: 10/14/2022] [Revised: 06/09/2023] [Accepted: 07/16/2023] [Indexed: 07/24/2023]
Abstract
Retinal drug delivery is a challenging, but important task, because most retinal diseases are still without any proper therapy. Drug delivery to the retina is hampered by the anatomical and physiological barriers resulting in minimal bioavailability after topical ocular and systemic administrations. Intravitreal injections are current method-of-choice in retinal delivery, but these injections show short duration of action for small molecules and low target bioavailability for many protein, gene based drugs and nanomedicines. State-of-art delivery systems are based on prolonged retention, controlled drug release and physical features (e.g. size and charge). However, drug delivery to the retina is not cell-specific and these approaches do not facilitate intracellular delivery of modern biological drugs (e.g. intracellular proteins, RNA based medicines, gene editing). In this focused review we highlight biological factors and mechanisms that form the basis for the selective retinal drug delivery systems in the future. Therefore, we are presenting current knowledge related to retinal membrane transporters, receptors and targeting ligands in relation to nanomedicines, conjugates, extracellular vesicles, and melanin binding. These issues are discussed in the light of retinal structure and cell types as well as future prospects in the field. Unlike in some other fields of targeted drug delivery (e.g. cancer research), selective delivery technologies have been rarely studied, even though cell targeted delivery may be even more feasible after local administration into the eye.
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Affiliation(s)
- Eva Ramsay
- Drug Research Programme, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00014 University of Helsinki, Finland
| | - Tatu Lajunen
- Drug Research Programme, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00014 University of Helsinki, Finland; School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
| | - Madhushree Bhattacharya
- Drug Research Programme, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00014 University of Helsinki, Finland
| | - Mika Reinisalo
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
| | - Kirsi Rilla
- School of Medicine, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
| | - Heidi Kidron
- Drug Research Programme, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00014 University of Helsinki, Finland
| | - Tetsuya Terasaki
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland
| | - Arto Urtti
- Drug Research Programme, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00014 University of Helsinki, Finland; School of Pharmacy, University of Eastern Finland, Yliopistonranta 1 C, 70211 Kuopio, Finland.
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10
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Balint L, Socaciu C, Socaciu AI, Vlad A, Gadalean F, Bob F, Milas O, Cretu OM, Suteanu-Simulescu A, Glavan M, Ienciu S, Mogos M, Jianu DC, Petrica L. Metabolite Profiling of the Gut–Renal–Cerebral Axis Reveals a Particular Pattern in Early Diabetic Kidney Disease in T2DM Patients. Int J Mol Sci 2023; 24:ijms24076212. [PMID: 37047187 PMCID: PMC10094272 DOI: 10.3390/ijms24076212] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) represents an important microvascular disease concerning the kidney and the brain. Gut dysbiosis and microbiota-derived metabolites may be in relation with early pathophysiological changes in diabetic kidney disease (DKD). The aim of the study was to find new potential gut-derived biomarkers involved in the pathogenesis of early DKD, with a focus on the complex interconnection of these biomarkers with podocyte injury, proximal tubule dysfunction, renal and cerebrovascular endothelial dysfunction. The study design consisted of metabolite profiling of serum and urine of 90 T2DM patients (subgroups P1-normoalbuminuria, P2-microalbuminuria, P3-macroalbuminuria) and 20 healthy controls (group C), based on ultra-high-performance liquid chromatography coupled with electrospray ionization-quadrupole-time of flight-mass spectrometry analysis (UHPLC-QTOF-ESI+-MS). By multivariate and univariate analyses of serum and urine, which included Partial Least Squares Discriminant Analysis (PLSDA), Variable Importance Plots (VIP), Random Forest scores, One Way ANOVA and Biomarker analysis, there were discovered metabolites belonging to nitrogen metabolic pathway and retinoic acid signaling pathway which differentiate P1 group from P2, P3, C groups. Tyrosine, phenylalanine, indoxyl sulfate, serotonin sulfate, and all-trans retinoic acid express the metabolic fingerprint of P1 group vs. P2, P3, C groups, revealing a particular pattern in early DKD in T2DM patients.
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Torres-Vergara P, Rivera R, Escudero C, Penny J. Maternal and Fetal Expression of ATP-Binding Cassette and Solute Carrier Transporters Involved in the Brain Disposition of Drugs. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1428:149-177. [PMID: 37466773 DOI: 10.1007/978-3-031-32554-0_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Evidence from preclinical and clinical studies demonstrate that pregnancy is a physiological state capable of modifying drug disposition. Factors including increased hepatic metabolism and renal excretion are responsible for impacting disposition, and the role of membrane transporters expressed in biological barriers, including the placental- and blood-brain barriers, has received considerable attention. In this regard, the brain disposition of drugs in the mother and fetus has been the subject of studies attempting to characterize the mechanisms by which pregnancy could alter the expression of ATP-binding cassette (ABC) and solute carrier (SLC) transporters. This chapter will summarize findings of the influence of pregnancy on the maternal and fetal expression of ABC and SLC transporters in the brain and the consequences of such changes on the disposition of therapeutic drugs.
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Affiliation(s)
- Pablo Torres-Vergara
- Departamento de Farmacia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile.
- Grupo de Investigación Vascular (GRIVAS), Universidad del Bio-Bio, Chillán, Chile.
| | - Robin Rivera
- Departamento de Farmacia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Carlos Escudero
- Grupo de Investigación Vascular (GRIVAS), Universidad del Bio-Bio, Chillán, Chile
- Laboratorio de Fisiología Vascular, Facultad de Ciencias Básicas, Universidad del Bio Bio, Chillán, Chile
| | - Jeffrey Penny
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Health and Medicine, The University of Manchester, Manchester, UK
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12
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Keller DN, Medwid SJ, Ross CD, Wigle TJ, Kim RB. Impact of organic anion transporting polypeptide, P-glycoprotein, and breast cancer resistance protein transporters on observed tamoxifen and endoxifen concentration and adverse effects. Pharmacogenet Genomics 2023; 33:10-18. [PMID: 36373739 DOI: 10.1097/fpc.0000000000000486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Drug transporters are important determinants of drug disposition and response. Tamoxifen is an antiestrogen for breast cancer therapy known for adverse drug reactions (ADRs). In this study, the involvement of OATP transporters in tamoxifen and endoxifen transport was studied in vitro while the impact of single nucleotide variation (SNV) in OATP and efflux transporters P-glycoprotein ( ABCB1 ) and Breast Cancer Resistance Protein ( ABCG2 ) on ADRs during tamoxifen therapy were assessed. METHODS Patients receiving tamoxifen for breast cancer, who were CYP2D6 normal metabolizers were enrolled ( n = 296). Patients completed a survey that captured ADRs and a blood sample was collected. Tamoxifen and endoxifen plasma concentration were measured, while DNA was genotyped for SNVs in ABCB1, ABCG2, SLCO1A2, SLCO1B1 , and SLCO2B1 . HEK293T cells were used to determine the extent of OATP-mediated transport of tamoxifen and endoxifen. RESULTS Common SNVs of ABCB1, ABCG2, SLCO1A2 , and SLCO1B1 were not associated with tamoxifen or endoxifen concentration. However, tamoxifen concentration was significantly higher in carriers of SLCO2B1 c.935G>A (129.8 ng/mL) compared to wildtype (114.9 ng/mL; P = 0.036). Interestingly, subjects who carried SLCO1A2 c.38A>G reported significantly less dizziness ( P = 0.016). In-vitro analysis demonstrated increased cellular accumulation of tamoxifen in cells overexpressing OATP1A2 and 1B1, but endoxifen uptake was not effected in OATP overexpressing cells. CONCLUSIONS We showed that OATP1A2 , a transporter known to be expressed at the blood-brain barrier, is capable of tamoxifen transport. Additionally, OATP1A2 c.38A>G was associated with reduced ADRs. Taken together, our findings suggest genetic variation in OATP transporters may be an important predictor of tamoxifen ADRs.
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Affiliation(s)
| | | | - Cameron D Ross
- Department of Medicine, University of Western Ontario, Canada
| | | | - Richard B Kim
- Department of Medicine, University of Western Ontario, Canada
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13
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Bakos É, Német O, Kucsma N, Tőkési N, Stieger B, Rushing E, Tőkés AM, Kele P, Tusnády GE, Özvegy-Laczka C. Cloning and characterization of a novel functional organic anion transporting polypeptide 3A1 isoform highly expressed in the human brain and testis. Front Pharmacol 2022; 13:958023. [PMID: 36120371 PMCID: PMC9479004 DOI: 10.3389/fphar.2022.958023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/01/2022] [Indexed: 12/05/2022] Open
Abstract
Organic anion transporting polypeptide 3A1 (OATP3A1, encoded by the SLCO3A1 gene) is a prostaglandin, oligopeptide, and steroid/thyroid hormone transporter with wide tissue distribution, expressed, e.g., in the human brain and testis. Although the physiological importance of OATP3A1 has not yet been clarified, based on its expression pattern, substrate recognition, and evolutionary conservation, OATP3A1 is a potential pharmacological target. Previously, two isoforms of OATP3A1, termed as V1 and V2, have been characterized. Here, we describe the cloning and functional characterization of a third isoform, OATP3A1_V3. The mRNA of isoform V3 is formed by alternative splicing and results in an OATP3A1 protein with an altered C-terminus compared to isoforms V1 and V2. Based on quantitative PCR, we demonstrate the widespread expression of SLCO3A1_V3 mRNA in human organs, with the highest expression in the brain and testis. By generation of an isoform V3-specific antibody and immunostaining, we show that the encoded protein is expressed in the human choroid plexus, neurons, and both germ and Sertoli cells of the testis. Moreover, we demonstrate that in contrast to isoform V1, OATP3A1_V3 localizes to the apical membrane of polarized MDCKII cells. Using HEK-293 cells engineered to overexpress OATP3A1_V3, we verify the protein’s functionality and identify dehydroepiandrosterone sulfate as a novel OATP3A1 substrate. Based on their distinct expression patterns but overlapping functions, OATP3A1 isoforms may contribute to transcellular (neuro)steroid transport in the central nervous system.
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Affiliation(s)
- Éva Bakos
- Institute of Enzymology, RCNS, Budapest, Hungary
| | | | - Nóra Kucsma
- Institute of Enzymology, RCNS, Budapest, Hungary
| | | | - Bruno Stieger
- University Hospital Zürich, University of Zurich, Zürich, Switzerland
| | - Elisabeth Rushing
- University Hospital Zürich, University of Zurich, Zürich, Switzerland
| | - Anna-Mária Tőkés
- Department of Pathology, Forensic and Insurance Medicine, Semmelweis University, Budapest, Hungary
| | - Péter Kele
- Institute of Organic Chemistry, RCNS, Budapest, Hungary
| | | | - Csilla Özvegy-Laczka
- Institute of Enzymology, RCNS, Budapest, Hungary
- *Correspondence: Csilla Özvegy-Laczka,
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Transport Mechanisms at the Blood–Brain Barrier and in Cellular Compartments of the Neurovascular Unit: Focus on CNS Delivery of Small Molecule Drugs. Pharmaceutics 2022; 14:pharmaceutics14071501. [PMID: 35890396 PMCID: PMC9324459 DOI: 10.3390/pharmaceutics14071501] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 02/06/2023] Open
Abstract
Ischemic stroke is a primary origin of morbidity and mortality in the United States and around the world. Indeed, several research projects have attempted to discover new drugs or repurpose existing therapeutics to advance stroke pharmacotherapy. Many of these preclinical stroke studies have reported positive results for neuroprotective agents; however, only one compound (3K3A-activated protein C (3K3A-APC)) has advanced to Phase III clinical trial evaluation. One reason for these many failures is the lack of consideration of transport mechanisms at the blood–brain barrier (BBB) and neurovascular unit (NVU). These endogenous transport processes function as a “gateway” that is a primary determinant of efficacious brain concentrations for centrally acting drugs. Despite the knowledge that some neuroprotective agents (i.e., statins and memantine) are substrates for these endogenous BBB transporters, preclinical stroke studies have largely ignored the role of transporters in CNS drug disposition. Here, we review the current knowledge on specific BBB transporters that either limit drug uptake into the brain (i.e., ATP-binding cassette (ABC) transporters) or can be targeted for optimized drug delivery (i.e., solute carrier (SLC) transporters). Additionally, we highlight the current knowledge on transporter expression in astrocytes, microglia, pericytes, and neurons with an emphasis on transport mechanisms in these cell types that can influence drug distribution within the brain.
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15
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Poór M, Kaci H, Bodnárová S, Mohos V, Fliszár-Nyúl E, Kunsági-Máté S, Özvegy-Laczka C, Lemli B. Interactions of resveratrol and its metabolites (resveratrol-3-sulfate, resveratrol-3-glucuronide, and dihydroresveratrol) with serum albumin, cytochrome P450 enzymes, and OATP transporters. Biomed Pharmacother 2022; 151:113136. [PMID: 35594715 DOI: 10.1016/j.biopha.2022.113136] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/13/2022] [Accepted: 05/15/2022] [Indexed: 11/19/2022] Open
Abstract
Resveratrol (RES) is a widely-known natural polyphenol which is also contained by several dietary supplements. Large doses of RES can result in high micromolar levels of its sulfate and glucuronide conjugates in the circulation, due to the high presystemic metabolism of the parent polyphenol. Pharmacokinetic interactions of RES have been extensively studied, while only limited data are available regarding its metabolites. Therefore, in the current study, we examined the interactions of resveratrol-3-sulfate (R3S), resveratrol-3-glucuronide, and dihydroresveratrol (DHR; a metabolite produced by the colon microbiota) with human serum albumin (HSA), cytochrome P450 (CYP) enzymes, and organic anion transporting polypeptides (OATP) employing in vitro models. Our results demonstrated that R3S and R3G may play a major role in the RES-induced pharmacokinetic interactions: (1) R3S can strongly displace the site I marker warfarin from HSA; (2) R3G showed similarly strong inhibitory action on CYP3A4 to RES; (3) R3S proved to be similarly strong (OATP1B1/3) or even stronger (OATP1A2 and OATP2B1) inhibitor of OATPs tested than RES, while R3G and RES showed comparable inhibitory actions on OATP2B1.
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Affiliation(s)
- Miklós Poór
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, Pécs H-7624, Hungary; Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs H-7624, Hungary.
| | - Hana Kaci
- Drug Resistance Research Group, Institute of Enzymology, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2., H-1117 Budapest, Hungary; Doctoral School of Biology, Institute of Biology, Eötvös Loránd University, Pázmány P. stny. 1/C, H-1117 Budapest, Hungary
| | - Slávka Bodnárová
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, Pécs H-7624, Hungary; Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs H-7624, Hungary
| | - Violetta Mohos
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, Pécs H-7624, Hungary; Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs H-7624, Hungary
| | - Eszter Fliszár-Nyúl
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, Pécs H-7624, Hungary; Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs H-7624, Hungary
| | - Sándor Kunsági-Máté
- Department of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Pécs, Szigeti út 12, Pécs H-7624, Hungary; Green Chemistry Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs H-7624, Hungary
| | - Csilla Özvegy-Laczka
- Drug Resistance Research Group, Institute of Enzymology, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2., H-1117 Budapest, Hungary
| | - Beáta Lemli
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, Pécs H-7624, Hungary; Department of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Pécs, Szigeti út 12, Pécs H-7624, Hungary; Green Chemistry Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs H-7624, Hungary
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16
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Huttunen J, Adla SK, Markowicz-Piasecka M, Huttunen KM. Increased/Targeted Brain (Pro)Drug Delivery via Utilization of Solute Carriers (SLCs). Pharmaceutics 2022; 14:pharmaceutics14061234. [PMID: 35745806 PMCID: PMC9228667 DOI: 10.3390/pharmaceutics14061234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 02/04/2023] Open
Abstract
Membrane transporters have a crucial role in compounds’ brain drug delivery. They allow not only the penetration of a wide variety of different compounds to cross the endothelial cells of the blood–brain barrier (BBB), but also the accumulation of them into the brain parenchymal cells. Solute carriers (SLCs), with nearly 500 family members, are the largest group of membrane transporters. Unfortunately, not all SLCs are fully characterized and used in rational drug design. However, if the structural features for transporter interactions (binding and translocation) are known, a prodrug approach can be utilized to temporarily change the pharmacokinetics and brain delivery properties of almost any compound. In this review, main transporter subtypes that are participating in brain drug disposition or have been used to improve brain drug delivery across the BBB via the prodrug approach, are introduced. Moreover, the ability of selected transporters to be utilized in intrabrain drug delivery is discussed. Thus, this comprehensive review will give insights into the methods, such as computational drug design, that should be utilized more effectively to understand the detailed transport mechanisms. Moreover, factors, such as transporter expression modulation pathways in diseases that should be taken into account in rational (pro)drug development, are considered to achieve successful clinical applications in the future.
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Affiliation(s)
- Johanna Huttunen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland; (J.H.); (S.K.A.)
| | - Santosh Kumar Adla
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland; (J.H.); (S.K.A.)
- Institute of Organic Chemistry and Biochemistry (IOCB), Czech Academy of Sciences, Flemingovo Namesti 542/2, 160 00 Prague, Czech Republic
| | - Magdalena Markowicz-Piasecka
- Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Lodz, ul. Muszyńskiego 1, 90-151 Lodz, Poland;
| | - Kristiina M. Huttunen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland; (J.H.); (S.K.A.)
- Correspondence:
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17
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Kang L, Han T, Cong H, Yu B, Shen Y. Recent research progress of biologically active peptides. Biofactors 2022; 48:575-596. [PMID: 35080058 DOI: 10.1002/biof.1822] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/04/2022] [Indexed: 11/11/2022]
Abstract
With the rapid development of molecular biology and biochemical technology, great progress has been made in the study of peptides. Peptides are easy to digest and absorb, with lowering of blood pressure and cholesterol, improving immunity, regulating hormones, antibacterial, and antiviral effects. Peptides also have physiological regulation and biological metabolism functions with applications in the fields of feed production and biomedical research. In the future, the research focus of bioactive peptides will focus on their efficient preparation and application. This article introduces a comprehensive review of the types, synthesis, functionalization, and bio-related applications of bioactive peptides. For this aim, we introduced in detail various biopeptides and then presented the production methods of bioactive peptides, such as enzymatic synthesis, microbial fermentation, chemical synthesis, and others. The applications of bioactive peptides for anticancers, immune therapy, antibacterial, and other applications have been introduced and discussed. And discussed the development prospects of biologically active peptides.
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Affiliation(s)
- Linlin Kang
- Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, China
| | - Tingting Han
- Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, China
| | - Hailin Cong
- Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, China
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, China
| | - Bing Yu
- Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, China
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, China
| | - Youqing Shen
- Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, China
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Center for Bionanoengineering, and Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, China
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18
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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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19
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Poustforoosh A, Nematollahi MH, Hashemipour H, Pardakhty A. Recent advances in Bio-conjugated nanocarriers for crossing the Blood-Brain Barrier in (pre-)clinical studies with an emphasis on vesicles. J Control Release 2022; 343:777-797. [DOI: 10.1016/j.jconrel.2022.02.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 02/10/2022] [Accepted: 02/12/2022] [Indexed: 12/12/2022]
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20
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Schäfer AM, Gilgen PM, Spirgi C, Potterat O, Meyer Zu Schwabedissen HE. Constituents of Passiflora incarnata, but Not of Valeriana officinalis, Interact with the Organic Anion Transporting Polypeptides (OATP)2B1 and OATP1A2. PLANTA MEDICA 2022; 88:152-162. [PMID: 33511622 DOI: 10.1055/a-1305-3936] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Herbal medication used in the treatment of sleep disorders and anxiety often contain extracts of Valeriana officinalis or Passiflora incarnata. Valerenic acid in V. officinalis and apigenin, orientin, and vitexin in P. incarnata are thought to contribute to their therapeutic effect. It was the aim of this study to test whether these constituents of herbal extracts are interacting with the uptake of estrone 3-sulfate, pregnenolone sulfate, and dehydroepiandrosterone sulfate mediated by the uptake transporters organic anion transporting polypeptide 2B1 (OATP2B1) or organic anion transporting polypeptide 1A2 (OATP1A2). Madin-Darby canine kidney cells overexpressing OATP2B1 or OATP1A2 were used to determine the influence of the constituents on the cellular accumulation of the sulfated steroids. Subsequently, competitive counterflow experiments were applied to test whether identified inhibitors are also substrates of the transporters. Valerenic acid only interacted with OATP2B1, whereas apigenin, orientin, and vitexin interacted with OATP2B1 and OATP1A2. Competitive counterflow revealed that orientin is a substrate of both transporters, while apigenin was transported by OATP1A2 and vitexin by OATP2B1. In a next step, commercially available P. incarnata preparations were assessed for their influence on the transporters, revealing inhibition of transporter-mediated estrone 3-sulfate uptake. HPLC-UV-MS analysis confirmed the presence of orientin and vitexin in these preparations, thereby suggesting that these constituents are involved in the interaction. Our data indicate that constituents of P. incarnata may alter the function of OATP2B1 and OATP1A2, which could affect the uptake of other compounds relying on uptake mediated by the transporters.
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Affiliation(s)
- Anima M Schäfer
- Biopharmacy, Department Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Pierrine M Gilgen
- Biopharmacy, Department Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Clara Spirgi
- Biopharmacy, Department Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Pharmaceutical Biology, Department Pharmaceutical Sciences, University of Basel, Basel, Switzerland
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Schaffenrath J, Huang SF, Wyss T, Delorenzi M, Keller A. Characterization of the blood-brain barrier in genetically diverse laboratory mouse strains. Fluids Barriers CNS 2021; 18:34. [PMID: 34321020 PMCID: PMC8317333 DOI: 10.1186/s12987-021-00269-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/14/2021] [Indexed: 11/13/2022] Open
Abstract
Background Genetic variation in a population has an influence on the manifestation of monogenic as well as multifactorial disorders, with the underlying genetic contribution dependent on several interacting variants. Common laboratory mouse strains used for modelling human disease lack the genetic variability of the human population. Therefore, outcomes of rodent studies show limited relevance to human disease. The functionality of brain vasculature is an important modifier of brain diseases. Importantly, the restrictive interface between blood and brain—the blood–brain barrier (BBB) serves as a major obstacle for the drug delivery into the central nervous system (CNS). Using genetically diverse mouse strains, we aimed to investigate the phenotypic and transcriptomic variation of the healthy BBB in different inbred mouse strains. Methods We investigated the heterogeneity of brain vasculature in recently wild-derived mouse strains (CAST/EiJ, WSB/EiJ, PWK/PhJ) and long-inbred mouse strains (129S1/SvImJ, A/J, C57BL/6J, DBA/2J, NOD/ShiLtJ) using different phenotypic arms. We used immunohistochemistry and confocal laser microscopy followed by quantitative image analysis to determine vascular density and pericyte coverage in two brain regions—cortex and hippocampus. Using a low molecular weight fluorescence tracer, sodium fluorescein and spectrophotometry analysis, we assessed BBB permeability in young and aged mice of selected strains. For further phenotypic characterization of endothelial cells in inbred mouse strains, we performed bulk RNA sequencing of sorted endothelial cells isolated from cortex and hippocampus. Results Cortical vessel density and pericyte coverage did not differ among the investigated strains, except in the cortex, where PWK/PhJ showed lower vessel density compared to NOD/ShiLtJ, and a higher pericyte coverage than DBA/2J. The vascular density in the hippocampus differed among analyzed strains but not the pericyte coverage. The staining patterns of endothelial arteriovenous zonation markers were similar in different strains. BBB permeability to a small fluorescent tracer, sodium fluorescein, was also similar in different strains, except in the hippocampus where the CAST/EiJ showed higher permeability than NOD/ShiLtJ. Transcriptomic analysis of endothelial cells revealed that sex of the animal was a major determinant of gene expression differences. In addition, the expression level of several genes implicated in endothelial function and BBB biology differed between wild-derived and long-inbred mouse strains. In aged mice of three investigated strains (DBA/2J, A/J, C57BL/6J) vascular density and pericyte coverage did not change—expect for DBA/2J, whereas vascular permeability to sodium fluorescein increased in all three strains. Conclusions Our analysis shows that although there were no major differences in parenchymal vascular morphology and paracellular BBB permeability for small molecular weight tracer between investigated mouse strains or sexes, transcriptomic differences of brain endothelial cells point to variation in gene expression of the intact BBB. These baseline variances might be confounding factors in pathological conditions that may lead to a differential functional outcome dependent on the sex or genetic polymorphism. Supplementary Information The online version contains supplementary material available at 10.1186/s12987-021-00269-w.
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Affiliation(s)
- Johanna Schaffenrath
- Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zürich, Zürich University, Zürich, Switzerland.,Neuroscience Center Zürich, University of Zürich and ETH Zürich, Zürich, Switzerland
| | - Sheng-Fu Huang
- Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zürich, Zürich University, Zürich, Switzerland.,Neuroscience Center Zürich, University of Zürich and ETH Zürich, Zürich, Switzerland
| | - Tania Wyss
- Bioinformatics Core Facility, Swiss Institute of Bioinformatics, Lausanne, Switzerland.,Department of Oncology, University Lausanne, Lausanne, Switzerland
| | - Mauro Delorenzi
- Bioinformatics Core Facility, Swiss Institute of Bioinformatics, Lausanne, Switzerland.,Department of Oncology, University Lausanne, Lausanne, Switzerland
| | - Annika Keller
- Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zürich, Zürich University, Zürich, Switzerland. .,Neuroscience Center Zürich, University of Zürich and ETH Zürich, Zürich, Switzerland.
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22
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Schäfer AM, Meyer zu Schwabedissen HE, Grube M. Expression and Function of Organic Anion Transporting Polypeptides in the Human Brain: Physiological and Pharmacological Implications. Pharmaceutics 2021; 13:pharmaceutics13060834. [PMID: 34199715 PMCID: PMC8226904 DOI: 10.3390/pharmaceutics13060834] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/30/2021] [Accepted: 05/31/2021] [Indexed: 12/17/2022] Open
Abstract
The central nervous system (CNS) is an important pharmacological target, but it is very effectively protected by the blood–brain barrier (BBB), thereby impairing the efficacy of many potential active compounds as they are unable to cross this barrier. Among others, membranous efflux transporters like P-Glycoprotein are involved in the integrity of this barrier. In addition to these, however, uptake transporters have also been found to selectively uptake certain compounds into the CNS. These transporters are localized in the BBB as well as in neurons or in the choroid plexus. Among them, from a pharmacological point of view, representatives of the organic anion transporting polypeptides (OATPs) are of particular interest, as they mediate the cellular entry of a variety of different pharmaceutical compounds. Thus, OATPs in the BBB potentially offer the possibility of CNS targeting approaches. For these purposes, a profound understanding of the expression and localization of these transporters is crucial. This review therefore summarizes the current state of knowledge of the expression and localization of OATPs in the CNS, gives an overview of their possible physiological role, and outlines their possible pharmacological relevance using selected examples.
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Affiliation(s)
- Anima M. Schäfer
- Biopharmacy, Department Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland; (A.M.S.); (H.E.M.z.S.)
| | - Henriette E. Meyer zu Schwabedissen
- Biopharmacy, Department Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland; (A.M.S.); (H.E.M.z.S.)
| | - Markus Grube
- Center of Drug Absorption and Transport (C_DAT), Department of Pharmacology, University Medicine of Greifswald, 17489 Greifswald, Germany
- Correspondence: ; Tel./Fax: +49-3834-865636
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23
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Al Rihani SB, Darakjian LI, Deodhar M, Dow P, Turgeon J, Michaud V. Disease-Induced Modulation of Drug Transporters at the Blood-Brain Barrier Level. Int J Mol Sci 2021; 22:ijms22073742. [PMID: 33916769 PMCID: PMC8038419 DOI: 10.3390/ijms22073742] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/30/2021] [Accepted: 04/01/2021] [Indexed: 02/07/2023] Open
Abstract
The blood–brain barrier (BBB) is a highly selective and restrictive semipermeable network of cells and blood vessel constituents. All components of the neurovascular unit give to the BBB its crucial and protective function, i.e., to regulate homeostasis in the central nervous system (CNS) by removing substances from the endothelial compartment and supplying the brain with nutrients and other endogenous compounds. Many transporters have been identified that play a role in maintaining BBB integrity and homeostasis. As such, the restrictive nature of the BBB provides an obstacle for drug delivery to the CNS. Nevertheless, according to their physicochemical or pharmacological properties, drugs may reach the CNS by passive diffusion or be subjected to putative influx and/or efflux through BBB membrane transporters, allowing or limiting their distribution to the CNS. Drug transporters functionally expressed on various compartments of the BBB involve numerous proteins from either the ATP-binding cassette (ABC) or the solute carrier (SLC) superfamilies. Pathophysiological stressors, age, and age-associated disorders may alter the expression level and functionality of transporter protein elements that modulate drug distribution and accumulation into the brain, namely, drug efficacy and toxicity. This review focuses and sheds light on the influence of inflammatory conditions and diseases such as Alzheimer’s disease, epilepsy, and stroke on the expression and functionality of the BBB drug transporters, the consequential modulation of drug distribution to the brain, and their impact on drug efficacy and toxicity.
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Affiliation(s)
- Sweilem B. Al Rihani
- Tabula Rasa HealthCare, Precision Pharmacotherapy Research and Development Institute, Orlando, FL 32827, USA; (S.B.A.R.); (L.I.D.); (M.D.); (P.D.); (J.T.)
| | - Lucy I. Darakjian
- Tabula Rasa HealthCare, Precision Pharmacotherapy Research and Development Institute, Orlando, FL 32827, USA; (S.B.A.R.); (L.I.D.); (M.D.); (P.D.); (J.T.)
| | - Malavika Deodhar
- Tabula Rasa HealthCare, Precision Pharmacotherapy Research and Development Institute, Orlando, FL 32827, USA; (S.B.A.R.); (L.I.D.); (M.D.); (P.D.); (J.T.)
| | - Pamela Dow
- Tabula Rasa HealthCare, Precision Pharmacotherapy Research and Development Institute, Orlando, FL 32827, USA; (S.B.A.R.); (L.I.D.); (M.D.); (P.D.); (J.T.)
| | - Jacques Turgeon
- Tabula Rasa HealthCare, Precision Pharmacotherapy Research and Development Institute, Orlando, FL 32827, USA; (S.B.A.R.); (L.I.D.); (M.D.); (P.D.); (J.T.)
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Veronique Michaud
- Tabula Rasa HealthCare, Precision Pharmacotherapy Research and Development Institute, Orlando, FL 32827, USA; (S.B.A.R.); (L.I.D.); (M.D.); (P.D.); (J.T.)
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Correspondence: ; Tel.: +1-856-938-8697
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Kinzi J, Grube M, Meyer Zu Schwabedissen HE. OATP2B1 - The underrated member of the organic anion transporting polypeptide family of drug transporters? Biochem Pharmacol 2021; 188:114534. [PMID: 33794186 DOI: 10.1016/j.bcp.2021.114534] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/21/2021] [Accepted: 03/23/2021] [Indexed: 12/28/2022]
Abstract
The organic anion transporting polypeptide 2B1 (OATP2B1) was one of the first cloned members of the SLCO family. However, its physiological and pharmacological role is still poorly understood, and object of a current debate on the transporter's relevance. Within this commentary, we summarize the data currently available on the transporter's expression and its substrates and highlight the strength and difficulties of the methods that have been applied to gather these data. The conclusion drawn from these findings was that OATP2B1 due to its intestinal expression is most likely involved in oral drug absorption of its substrate and therefore prone for interactions. This has been tested in in vivo drug interaction and/or pharmacogenetic studies. While some of these support the notion of OATP2B1 being of relevance in drug absorption, the pharmacogenetic findings are rather inconclusive. We will explain our thoughts why OATP2B1 may not influence the general systemic pharmacokinetic of certain substrates, but possibly local distribution processes, like the transfer across the blood-brain-barrier. Besides the pharmacokinetic aspects, there are data on endogenous molecules like coproporphyrins and sulfated steroids. Therefore, we will also highlight possible physiological roles of OATP2B1, which are driven by its expression pattern in the tubular cells of the kidney as well as its expression in the blood brain barrier. Finally we also deal with the advantages and disadvantages in the use of animal models to decipher the role of OATP2B1 in pharmacokinetics of its substrates and beyond.
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Affiliation(s)
- Jonny Kinzi
- Biopharmacy, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Markus Grube
- Center of Drug Absorption and Transport, University Medicine Greifswald, Greifswald, Germany
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25
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Non-Human Primate Blood-Brain Barrier and In Vitro Brain Endothelium: From Transcriptome to the Establishment of a New Model. Pharmaceutics 2020; 12:pharmaceutics12100967. [PMID: 33066641 PMCID: PMC7602447 DOI: 10.3390/pharmaceutics12100967] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/02/2020] [Accepted: 10/09/2020] [Indexed: 12/12/2022] Open
Abstract
The non-human primate (NHP)-brain endothelium constitutes an essential alternative to human in the prediction of molecule trafficking across the blood–brain barrier (BBB). This study presents a comparison between the NHP transcriptome of freshly isolated brain microcapillaries and in vitro-selected brain endothelial cells (BECs), focusing on important BBB features, namely tight junctions, receptors mediating transcytosis (RMT), ABC and SLC transporters, given its relevance as an alternative model for the molecule trafficking prediction across the BBB and identification of new brain-specific transport mechanisms. In vitro BECs conserved most of the BBB key elements for barrier integrity and control of molecular trafficking. The function of RMT via the transferrin receptor (TFRC) was characterized in this NHP-BBB model, where both human transferrin and anti-hTFRC antibody showed increased apical-to-basolateral passage in comparison to control molecules. In parallel, eventual BBB-related regional differences were Investig.igated in seven-day in vitro-selected BECs from five brain structures: brainstem, cerebellum, cortex, hippocampus, and striatum. Our analysis retrieved few differences in the brain endothelium across brain regions, suggesting a rather homogeneous BBB function across the brain parenchyma. The presently established NHP-derived BBB model closely mimics the physiological BBB, thus representing a ready-to-use tool for assessment of the penetration of biotherapeutics into the human CNS.
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26
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Laczkó-Rigó R, Jójárt R, Mernyák E, Bakos É, Tuerkova A, Zdrazil B, Özvegy-Laczka C. Structural dissection of 13-epiestrones based on the interaction with human Organic anion-transporting polypeptide, OATP2B1. J Steroid Biochem Mol Biol 2020; 200:105652. [PMID: 32147459 DOI: 10.1016/j.jsbmb.2020.105652] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 02/20/2020] [Accepted: 03/05/2020] [Indexed: 12/14/2022]
Abstract
Human OATP2B1 encoded by the SLCO2B1 gene is a multispecific transporter mediating the cellular uptake of large, organic molecules, including hormones, prostaglandins and bile acids. OATP2B1 is ubiquitously expressed in the human body, with highest expression levels in pharmacologically relevant barriers, like enterocytes, hepatocytes and endothelial cells of the blood-brain-barrier. In addition to its endogenous substrates, OATP2B1 also recognizes clinically applied drugs, such as statins, antivirals, antihistamines and chemotherapeutic agents and influences their pharmacokinetics. On the other hand, OATP2B1 is also overexpressed in various tumors. Considering that elevated hormone uptake by OATP2B1 results in increased cell proliferation of hormone dependent tumors (e.g. breast or prostate), inhibition of OATP2B1 can be a good strategy to inhibit the growth of these tumors. 13-epiestrones represent a potential novel strategy in the treatment of hormone dependent cancers by the suppression of local estrogen production due to the inhibition of the key enzyme of estrone metabolism, 17ß-hydroxysteroid-dehydrogenase type 1 (HSD17ß1). Recently, we have demonstrated that various phosphonated 13-epiestrones are dual inhibitors also suppressing OATP2B1 function. In order to gain better insights into the molecular determinants of OATP2B1 13-epiestrone interaction we investigated the effect of C-2 and C-4 halogen or phenylalkynyl modified epiestrones on OATP2B1 transport function. Potent inhibitors (with EC50 values in the low micromolar range) as well as non-inhibitors of OATP2B1 function were identified. Based on the structure-activity relationship (SAR) of the various 13-epiestrone derivatives we could define structural elements important for OATP2B1 inhibition. Our results may help to understand the drug/inhibitor interaction profile of OATP2B1, and also may be a useful strategy to block steroid hormone entry into tumors.
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Affiliation(s)
- Réka Laczkó-Rigó
- Membrane Protein Research Group, Institute of Enzymology, RCNS, H-1117, Budapest, Magyar tudósok krt. 2, Hungary
| | - Rebeka Jójárt
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720, Szeged, Hungary
| | - Erzsébet Mernyák
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720, Szeged, Hungary
| | - Éva Bakos
- Membrane Protein Research Group, Institute of Enzymology, RCNS, H-1117, Budapest, Magyar tudósok krt. 2, Hungary
| | - Alzbeta Tuerkova
- Department of Pharmaceutical Chemistry, Division of Drug Design and Medicinal Chemistry, University of Vienna, Althanstraße 14, A-1090, Vienna, Austria
| | - Barbara Zdrazil
- Department of Pharmaceutical Chemistry, Division of Drug Design and Medicinal Chemistry, University of Vienna, Althanstraße 14, A-1090, Vienna, Austria
| | - Csilla Özvegy-Laczka
- Membrane Protein Research Group, Institute of Enzymology, RCNS, H-1117, Budapest, Magyar tudósok krt. 2, Hungary.
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27
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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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28
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Schäfer AM, Meyer Zu Schwabedissen HE, Bien-Möller S, Hubeny A, Vogelgesang S, Oswald S, Grube M. OATP1A2 and OATP2B1 Are Interacting with Dopamine-Receptor Agonists and Antagonists. Mol Pharm 2020; 17:1987-1995. [PMID: 32343897 DOI: 10.1021/acs.molpharmaceut.0c00159] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Interaction with the dopaminergic system in the central nervous system is either therapeutically intended or it is a side effect. In both cases, dopamine-receptor agonists (DRA) like the ergoline derivative bromocriptine and dopamine-receptor antagonists (DRAn) like metoclopramide have to cross the blood-brain barrier (BBB). The organic anion transporting polypeptides (OATP) 1A2 and 2B1 are cellular uptake carriers for a variety of endogenous and xenobiotic compounds. As both transporters are expressed in endothelial cells of the BBB, the aim of the present study was to determine whether the DRA bromocriptine, cabergoline, and pergolide and the DRAn metoclopramide and domperidone are interacting with OATP1A2 and 2B1 and could therefore be candidate genes modifying wanted and unwanted effects of these drugs. Localization of both transporters in the brain was confirmed using LC-MS/MS and immunofluorescence stainings. For the functional studies, MDCKII cells stably expressing OATP1A2 or 2B1 were used. Initial interaction studies with the well-characterized transporter substrate estrone 3-sulfate revealed that all tested compounds except pergolide inhibit the transport function of both proteins with the most potent effect for bromocriptine (IC50 = 2.2 μM (OATP1A2) and IC50 = 2.5 μM (OATP2B1)). Further studies using the indirect competitive counterflow method identified bromocriptine, cabergoline, and domperidone as substrates of both transporters, whereas metoclopramide was only transported by OATP1A2. These findings were verified for domperidone by direct measurements using its tritium-labeled form as a tracer. Moreover, the transporter-mediated uptake of this compound was sensitive to the OATP1A2 and OATP2B1 inhibitor naringin. In conclusion, this study suggests that OATP1A2 and 2B1 may play a role in the uptake of DR agonists and antagonists into the brain.
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Affiliation(s)
- Anima M Schäfer
- Biopharmacy, Department Pharmaceutical Sciences, University of Basel, 4056 Basel, Switzerland
| | | | - Sandra Bien-Möller
- Center of Drug Absorption and Transport (C_DAT), Department of Pharmacology and Clinical Pharmacology, University Medicine Greifswald, 17487 Greifswald, Germany
| | - Andrea Hubeny
- Center of Drug Absorption and Transport (C_DAT), Department of Pharmacology and Clinical Pharmacology, University Medicine Greifswald, 17487 Greifswald, Germany
| | - Silke Vogelgesang
- Department of Pathology, University Medicine Greifswald, 17487 Greifswald, Germany
| | - Stefan Oswald
- Center of Drug Absorption and Transport (C_DAT), Department of Pharmacology and Clinical Pharmacology, University Medicine Greifswald, 17487 Greifswald, Germany.,Institute of Pharmacology and Toxicology, Rostock, University Medical Center, 18057 Rostock, Germany
| | - Markus Grube
- Center of Drug Absorption and Transport (C_DAT), Department of Pharmacology and Clinical Pharmacology, University Medicine Greifswald, 17487 Greifswald, Germany
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29
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Jetter A, Kullak-Ublick GA. Drugs and hepatic transporters: A review. Pharmacol Res 2020; 154:104234. [DOI: 10.1016/j.phrs.2019.04.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/25/2019] [Accepted: 04/16/2019] [Indexed: 12/22/2022]
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30
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Bakos É, Német O, Patik I, Kucsma N, Várady G, Szakács G, Özvegy‐Laczka C. A novel fluorescence‐based functional assay for human OATP1A2 and OATP1C1 identifies interaction between third‐generation P‐gp inhibitors and OATP1A2. FEBS J 2019; 287:2468-2485. [DOI: 10.1111/febs.15156] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/16/2019] [Accepted: 11/22/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Éva Bakos
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Orsolya Német
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Izabel Patik
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Nóra Kucsma
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - György Várady
- Laboratory of Molecular Cell Biology Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
| | - Gergely Szakács
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
- Institute of Cancer Research Medical University Vienna Wien Austria
| | - Csilla Özvegy‐Laczka
- Membrane Protein Research Group Institute of Enzymology Research Centre for Natural Sciences Hungarian Academy of Sciences Budapest Hungary
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Transporters in the Mammary Gland-Contribution to Presence of Nutrients and Drugs into Milk. Nutrients 2019; 11:nu11102372. [PMID: 31590349 PMCID: PMC6836069 DOI: 10.3390/nu11102372] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/19/2019] [Accepted: 09/25/2019] [Indexed: 02/07/2023] Open
Abstract
A large number of nutrients and bioactive ingredients found in milk play an important role in the nourishment of breast-fed infants and dairy consumers. Some of these ingredients include physiologically relevant compounds such as vitamins, peptides, neuroactive compounds and hormones. Conversely, milk may contain substances-drugs, pesticides, carcinogens, environmental pollutants-which have undesirable effects on health. The transfer of these compounds into milk is unavoidably linked to the function of transport proteins. Expression of transporters belonging to the ATP-binding cassette (ABC-) and Solute Carrier (SLC-) superfamilies varies with the lactation stages of the mammary gland. In particular, Organic Anion Transporting Polypeptides 1A2 (OATP1A2) and 2B1 (OATP2B1), Organic Cation Transporter 1 (OCT1), Novel Organic Cation Transporter 1 (OCTN1), Concentrative Nucleoside Transporters 1, 2 and 3 (CNT1, CNT2 and CNT3), Peptide Transporter 2 (PEPT2), Sodium-dependent Vitamin C Transporter 2 (SVCT2), Multidrug Resistance-associated Protein 5 (ABCC5) and Breast Cancer Resistance Protein (ABCG2) are highly induced during lactation. This review will focus on these transporters overexpressed during lactation and their role in the transfer of products into the milk, including both beneficial and harmful compounds. Furthermore, additional factors, such as regulation, polymorphisms or drug-drug interactions will be described.
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33
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Liu X, Pan G. Roles of Drug Transporters in Blood-Retinal Barrier. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1141:467-504. [PMID: 31571172 PMCID: PMC7120327 DOI: 10.1007/978-981-13-7647-4_10] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Blood-retinal barrier (BRB) includes inner BRB (iBRB) and outer BRB (oBRB), which are formed by retinal capillary endothelial (RCEC) cells and by retinal pigment epithelial (RPE) cells in collaboration with Bruch's membrane and the choriocapillaris, respectively. Functions of the BRB are to regulate fluids and molecular movement between the ocular vascular beds and retinal tissues and to prevent leakage of macromolecules and other potentially harmful agents into the retina, keeping the microenvironment of the retina and retinal neurons. These functions are mainly attributed to absent fenestrations of RCECs, tight junctions, expression of a great diversity of transporters, and coverage of pericytes and glial cells. BRB existence also becomes a reason that systemic administration for some drugs is not suitable for the treatment of retinal diseases. Some diseases (such as diabetes and ischemia-reperfusion) impair BRB function via altering tight junctions, RCEC death, and transporter expression. This chapter will illustrate function of BRB, expressions and functions of these transporters, and their clinical significances.
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Affiliation(s)
- Xiaodong Liu
- grid.254147.10000 0000 9776 7793School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu China
| | - Guoyu Pan
- grid.9227.e0000000119573309Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, Shanghai China
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34
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Chicken Organic Anion-Transporting Polypeptide 1A2, a Novel Avian Hepatitis E Virus (HEV) ORF2-Interacting Protein, Is Involved in Avian HEV Infection. J Virol 2019; 93:JVI.02205-18. [PMID: 30894478 DOI: 10.1128/jvi.02205-18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 03/10/2019] [Indexed: 12/12/2022] Open
Abstract
Avian hepatitis E virus (HEV) is the main causative agent of big liver and spleen disease in chickens. Due to the absence of a highly effective cell culture system, there are few reports about the interaction between avian HEV and host cells. In this study, organic anion-transporting polypeptide 1A2 (OATP1A2) from chicken liver cells was identified to interact with ap237, a truncated avian HEV capsid protein spanning amino acids 313 to 549, by a glutathione S-transferase (GST) pulldown assay. GST pulldown and indirect enzyme-linked immunosorbent assays (ELISAs) further confirmed that the extracellular domain of OATP1A2 directly binds with ap237. The expression levels of OATP1A2 in host cells are positively correlated with the amounts of ap237 attachment and virus infection. The distribution of OATP1A2 in different tissues is consistent with avian HEV infection in vivo Finally, when the functions of OATP1A2 in cells are inhibited by its substrates or an inhibitor or blocked by ap237 or anti-OATP1A2 sera, attachment to and infection of host cells by avian HEV are significantly reduced. Collectively, these results displayed for the first time that OATP1A2 interacts with the avian HEV capsid protein and can influence viral infection in host cells. The present study provides new insight to understand the process of avian HEV infection of host cells.IMPORTANCE The process of viral infection is centered around the interaction between the virus and host cells. Due to the lack of a highly effective cell culture system in vitro, there is little understanding about the interaction between avian HEV and its host cells. In this study, a total of seven host proteins were screened in chicken liver cells by a truncated avian HEV capsid protein (ap237) in which the host protein OATP1A2 interacted with ap237. Overexpression of OATP1A2 in the cells can promote ap237 adsorption as well as avian HEV adsorption and infection of the cells. When the function of OATP1A2 in cells was inhibited by substrates or inhibitors, attachment and infection by avian HEV significantly decreased. The distribution of OATP1A2 in different chicken tissues corresponded with that in tissues during avian HEV infection. This is the first finding that OATP1A2 is involved in viral infection of host cells.
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Organic anion transporting polypeptide 2B1 – More than a glass-full of drug interactions. Pharmacol Ther 2019; 196:204-215. [DOI: 10.1016/j.pharmthera.2018.12.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Windt T, Tóth S, Patik I, Sessler J, Kucsma N, Szepesi Á, Zdrazil B, Özvegy-Laczka C, Szakács G. Identification of anticancer OATP2B1 substrates by an in vitro triple-fluorescence-based cytotoxicity screen. Arch Toxicol 2019; 93:953-964. [PMID: 30863990 PMCID: PMC6510822 DOI: 10.1007/s00204-019-02417-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 12/13/2018] [Indexed: 12/21/2022]
Abstract
Membrane transporters play an important role in the absorption, distribution, metabolism and excretion of drugs. The cellular accumulation of many drugs is the result of the net function of efflux and influx transporters. Efflux transporters such as P-glycoprotein/ABCB1 have been shown to confer multidrug resistance in cancer. Although expression of uptake transporters has been confirmed in cancer cells, their role in chemotherapy response has not been systematically investigated. In the present study we have adapted a fluorescence-based cytotoxic assay to characterize the influence of key drug-transporters on the toxicity of approved anticancer drugs. Co-cultures of fluorescently labeled parental and transporter-expressing cells (expressing ABCB1, ABCG2 or OATP2B1) were screened against 101 FDA-approved anticancer drugs, using a novel, automated, triple fluorescence-based cytotoxicity assay. By measuring the survival of parental and transporter-expressing cells in co-cultures, we identify those FDA-approved anticancer drugs, whose toxicity is influenced by ABCB1, ABCG2 or OATP2B1. In addition to confirming known substrates of ABCB1 and ABCG2, the fluorescence-based cytotoxicity assays identified anticancer agents whose toxicity was increased in OATP2B1 expressing cells. Interaction of these compounds with OATP2B1 was verified in dedicated transport assays using cell-impermeant fluorescent substrates. Understanding drug-transporter interactions is needed to increase the efficacy of chemotherapeutic agents. Our results highlight the potential of the fluorescence-based HT screening system for identifying transporter substrates, opening the way for the design of therapeutic approaches based on the inhibition or even the exploitation of transporters in cancer cells.
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Affiliation(s)
- Tímea Windt
- Institute of Enzymology, Research Centre for National Sciences, HAS, Budapest, 1117, Hungary
| | - Szilárd Tóth
- Institute of Enzymology, Research Centre for National Sciences, HAS, Budapest, 1117, Hungary.
| | - Izabel Patik
- Institute of Enzymology, Research Centre for National Sciences, HAS, Budapest, 1117, Hungary
| | - Judit Sessler
- Institute of Enzymology, Research Centre for National Sciences, HAS, Budapest, 1117, Hungary
| | - Nóra Kucsma
- Institute of Enzymology, Research Centre for National Sciences, HAS, Budapest, 1117, Hungary
| | - Áron Szepesi
- Institute of Enzymology, Research Centre for National Sciences, HAS, Budapest, 1117, Hungary
| | - Barbara Zdrazil
- Department of Pharmaceutical Chemistry, Division of Drug Design and Medicinal Chemistry, University of Vienna, Vienna, Austria
| | - Csilla Özvegy-Laczka
- Institute of Enzymology, Research Centre for National Sciences, HAS, Budapest, 1117, Hungary
| | - Gergely Szakács
- Institute of Enzymology, Research Centre for National Sciences, HAS, Budapest, 1117, Hungary.
- Institute of Cancer Research, Medical University Vienna, Vienna, Austria.
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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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Sweeney MD, Zhao Z, Montagne A, Nelson AR, Zlokovic BV. Blood-Brain Barrier: From Physiology to Disease and Back. Physiol Rev 2019; 99:21-78. [PMID: 30280653 PMCID: PMC6335099 DOI: 10.1152/physrev.00050.2017] [Citation(s) in RCA: 1172] [Impact Index Per Article: 234.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 04/17/2018] [Accepted: 04/17/2018] [Indexed: 12/12/2022] Open
Abstract
The blood-brain barrier (BBB) prevents neurotoxic plasma components, blood cells, and pathogens from entering the brain. At the same time, the BBB regulates transport of molecules into and out of the central nervous system (CNS), which maintains tightly controlled chemical composition of the neuronal milieu that is required for proper neuronal functioning. In this review, we first examine molecular and cellular mechanisms underlying the establishment of the BBB. Then, we focus on BBB transport physiology, endothelial and pericyte transporters, and perivascular and paravascular transport. Next, we discuss rare human monogenic neurological disorders with the primary genetic defect in BBB-associated cells demonstrating the link between BBB breakdown and neurodegeneration. Then, we review the effects of genes underlying inheritance and/or increased susceptibility for Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease, and amyotrophic lateral sclerosis (ALS) on BBB in relation to other pathologies and neurological deficits. We next examine how BBB dysfunction relates to neurological deficits and other pathologies in the majority of sporadic AD, PD, and ALS cases, multiple sclerosis, other neurodegenerative disorders, and acute CNS disorders such as stroke, traumatic brain injury, spinal cord injury, and epilepsy. Lastly, we discuss BBB-based therapeutic opportunities. We conclude with lessons learned and future directions, with emphasis on technological advances to investigate the BBB functions in the living human brain, and at the molecular and cellular level, and address key unanswered questions.
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Affiliation(s)
- Melanie D Sweeney
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California , Los Angeles, California ; and Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California , Los Angeles, California
| | - Zhen Zhao
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California , Los Angeles, California ; and Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California , Los Angeles, California
| | - Axel Montagne
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California , Los Angeles, California ; and Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California , Los Angeles, California
| | - Amy R Nelson
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California , Los Angeles, California ; and Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California , Los Angeles, California
| | - Berislav V Zlokovic
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California , Los Angeles, California ; and Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California , Los Angeles, California
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Lu X, Chan T, Cheng Z, Shams T, Zhu L, Murray M, Zhou F. The 5'-AMP-Activated Protein Kinase Regulates the Function and Expression of Human Organic Anion Transporting Polypeptide 1A2. Mol Pharmacol 2018; 94:1412-1420. [PMID: 30348897 DOI: 10.1124/mol.118.113423] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 09/28/2018] [Indexed: 12/14/2022] Open
Abstract
The organic anion transporting polypeptides (OATPs) are important membrane proteins that mediate the cellular uptake of drugs and endogenous substances. OATP1A2 is widely distributed in many human tissues that are targeted in drug therapy; defective OATP1A2 leads to altered drug disposition influencing therapeutic outcomes. 5'-AMP-activated protein kinase (AMPK) signaling plays an important role in the pathogenesis of the metabolic syndrome characterized by an increased incidence of type II diabetes and nonalcoholic fatty liver disease. This study investigated the regulatory role of AMPK in OATP1A2 transport function and expression. We found that the treatment of AMPK-specific inhibitor compound C (dorsomorphin dihydrochloride) decreased OATP1A2-mediated uptake of estrone-3-sulfate in a concentration- and time-dependent manner. The impaired OATP1A2 function was associated with a reduced Vmax [154.6 ± 17.9 pmol × (μg × 4 minutes)-1 in compound C-treated cells vs. 413.6 ± 52.5 pmol × (μg × 4 minutes)-1 in controls]; the Km was unchanged. The cell-surface expression of OATP1A2 was decreased by compound C treatment, but total cellular expression was unchanged. The impaired cell-surface expression of OATP1A2 was associated with accelerated internalization and impaired targeting/recycling. Silencing of the AMPK α1-subunit using specific small interfering RNA corroborated the findings with compound C and revealed a role for AMPK in regulating OATP1A2 protein stability. Overall, this study implicated AMPK in the regulation of the function and expression of OATP1A2, which potentially impacts on the disposition of OATP1A2 drug substrates that may be used to treat patients with the metabolic syndrome and other diseases.
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Affiliation(s)
- Xiaoxi Lu
- School of Pharmacy (X.L., T.C., Z.C., T.S., F.Z.), Save Sight Institute (L.Z.), and Discipline of Pharmacology (M.M.), Faculty of Medicine and Health, University of Sydney, New South Wales, Australia; and Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan (T.C.)
| | - Ting Chan
- School of Pharmacy (X.L., T.C., Z.C., T.S., F.Z.), Save Sight Institute (L.Z.), and Discipline of Pharmacology (M.M.), Faculty of Medicine and Health, University of Sydney, New South Wales, Australia; and Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan (T.C.)
| | - Zhengqi Cheng
- School of Pharmacy (X.L., T.C., Z.C., T.S., F.Z.), Save Sight Institute (L.Z.), and Discipline of Pharmacology (M.M.), Faculty of Medicine and Health, University of Sydney, New South Wales, Australia; and Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan (T.C.)
| | - Tahiatul Shams
- School of Pharmacy (X.L., T.C., Z.C., T.S., F.Z.), Save Sight Institute (L.Z.), and Discipline of Pharmacology (M.M.), Faculty of Medicine and Health, University of Sydney, New South Wales, Australia; and Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan (T.C.)
| | - Ling Zhu
- School of Pharmacy (X.L., T.C., Z.C., T.S., F.Z.), Save Sight Institute (L.Z.), and Discipline of Pharmacology (M.M.), Faculty of Medicine and Health, University of Sydney, New South Wales, Australia; and Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan (T.C.)
| | - Michael Murray
- School of Pharmacy (X.L., T.C., Z.C., T.S., F.Z.), Save Sight Institute (L.Z.), and Discipline of Pharmacology (M.M.), Faculty of Medicine and Health, University of Sydney, New South Wales, Australia; and Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan (T.C.)
| | - Fanfan Zhou
- School of Pharmacy (X.L., T.C., Z.C., T.S., F.Z.), Save Sight Institute (L.Z.), and Discipline of Pharmacology (M.M.), Faculty of Medicine and Health, University of Sydney, New South Wales, Australia; and Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan (T.C.)
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Bauer M, Traxl A, Matsuda A, Karch R, Philippe C, Nics L, Klebermass EM, Wulkersdorfer B, Weber M, Poschner S, Tournier N, Jäger W, Wadsak W, Hacker M, Wanek T, Zeitlinger M, Langer O. Effect of Rifampicin on the Distribution of [ 11C]Erlotinib to the Liver, a Translational PET Study in Humans and in Mice. Mol Pharm 2018; 15:4589-4598. [PMID: 30180590 DOI: 10.1021/acs.molpharmaceut.8b00588] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Organic anion-transporting polypeptides (OATPs) mediate the uptake of various drugs from blood into the liver in the basolateral membrane of hepatocytes. Positron emission tomography (PET) is a potentially powerful tool to assess the activity of hepatic OATPs in vivo, but its utility critically depends on the availability of transporter-selective probe substrates. We have shown before that among the three OATPs expressed in hepatocytes (OATP1B1, OATP1B3, and OATP2B1), [11C]erlotinib is selectively transported by OATP2B1. In contrast to OATP1B1 and OATP1B3, OATP2B1 has not been thoroughly explored yet, and no specific probe substrates are currently available. To assess if the prototypical OATP inhibitor rifampicin can inhibit liver uptake of [11C]erlotinib in vivo, we performed [11C]erlotinib PET scans in six healthy volunteers without and with intravenous pretreatment with rifampicin (600 mg). In addition, FVB mice underwent [11C]erlotinib PET scans without and with concurrent intravenous infusion of high-dose rifampicin (100 mg/kg). Rifampicin caused a moderate reduction in the liver distribution of [11C]erlotinib in humans, while a more pronounced effect of rifampicin was observed in mice, in which rifampicin plasma concentrations were higher than in humans. In vitro uptake experiments in an OATP2B1-overexpressing cell line indicated that rifampicin inhibited OATP2B1 transport of [11C]erlotinib in a concentration-dependent manner with a half-maximum inhibitory concentration of 72.0 ± 1.4 μM. Our results suggest that rifampicin-inhibitable uptake transporter(s) contributed to the liver distribution of [11C]erlotinib in humans and mice and that [11C]erlotinib PET in combination with rifampicin may be used to measure the activity of this/these uptake transporter(s) in vivo. Furthermore, our data suggest that a standard clinical dose of rifampicin may exert in vivo a moderate inhibitory effect on hepatic OATP2B1.
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Affiliation(s)
| | - Alexander Traxl
- Center for Health & Bioresources , AIT Austrian Institute of Technology GmbH , 2444 Seibersdorf , Austria
| | | | | | | | | | | | | | | | - Stefan Poschner
- Department of Clinical Pharmacy and Diagnostics , University of Vienna , A-1090 Vienna , Austria
| | - Nicolas Tournier
- IMIV, CEA, Inserm, CNRS , Université Paris-Sud, Université Paris Saclay, CEA-SHFJ , 91401 Orsay , France
| | - Walter Jäger
- Department of Clinical Pharmacy and Diagnostics , University of Vienna , A-1090 Vienna , Austria
| | - Wolfgang Wadsak
- Center for Biomarker Research in Medicine - CBmed GmbH , 8010 Graz , Austria
| | | | - Thomas Wanek
- Center for Health & Bioresources , AIT Austrian Institute of Technology GmbH , 2444 Seibersdorf , Austria
| | | | - Oliver Langer
- Center for Health & Bioresources , AIT Austrian Institute of Technology GmbH , 2444 Seibersdorf , Austria
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Nakamura Y, Nakanishi T, Tamai I. Membrane Transporters Contributing to PGE 2 Distribution in Central Nervous System. Biol Pharm Bull 2018; 41:1337-1347. [DOI: 10.1248/bpb.b18-00169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yoshinobu Nakamura
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
| | - Takeo Nakanishi
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
| | - Ikumi Tamai
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
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Zamek-Gliszczynski MJ, Taub ME, Chothe PP, Chu X, Giacomini KM, Kim RB, Ray AS, Stocker SL, Unadkat JD, Wittwer MB, Xia C, Yee SW, Zhang L, Zhang Y. Transporters in Drug Development: 2018 ITC Recommendations for Transporters of Emerging Clinical Importance. Clin Pharmacol Ther 2018; 104:890-899. [PMID: 30091177 DOI: 10.1002/cpt.1112] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/01/2018] [Indexed: 12/16/2022]
Abstract
This white paper provides updated International Transporter Consortium (ITC) recommendations on transporters that are important in drug development following the 3rd ITC workshop. New additions include prospective evaluation of organic cation transporter 1 (OCT1) and retrospective evaluation of organic anion transporting polypeptide (OATP)2B1 because of their important roles in drug absorption, disposition, and effects. For the first time, the ITC underscores the importance of transporters involved in drug-induced vitamin deficiency (THTR2) and those involved in the disposition of biomarkers of organ function (OAT2 and bile acid transporters).
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Affiliation(s)
| | - Mitchell E Taub
- Drug Metabolism and Pharmacokinetics, Boehringer Ingelheim, Ridgefield, Connecticut, USA
| | - Paresh P Chothe
- Drug Metabolism and Pharmacokinetics, Vertex Pharmaceuticals, Boston, Massachusetts, USA
| | - Xiaoyan Chu
- Department of Pharmacokinetics, Pharmacodynamics and Drug Metabolism, Merck & Co., Kenilworth, New Jersey, USA
| | - Kathleen M Giacomini
- Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California, San Francisco, California, USA
| | - Richard B Kim
- Division of Clinical Pharmacology, Department of Medicine, Western University, London, ON, Canada
| | - Adrian S Ray
- Clinical Research, Gilead Sciences, Foster City, California, USA
| | - Sophie L Stocker
- Department of Clinical Pharmacology & Toxicology, St Vincent's Hospital, Sydney, NSW, Australia & St Vincent's Clinical School, UNSW Sydney, NSW, Australia
| | - Jashvant D Unadkat
- Department of Pharmaceutics, University of Washington, Seattle, Washington, USA
| | - Matthias B Wittwer
- Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche, Basel, Switzerland
| | - Cindy Xia
- Drug Metabolism and Pharmacokinetics, Takeda Pharmaceuticals International, Cambridge, Massachusetts, USA
| | - Sook-Wah Yee
- Department of Bioengineering and Therapeutic Sciences, Schools of Pharmacy and Medicine, University of California, San Francisco, California, USA
| | - Lei Zhang
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Yan Zhang
- Drug Metabolism Pharmacokinetics & Clinical Pharmacology, Incyte, Wilmington, Delaware, USA
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Kubo Y, Akanuma SI, Hosoya KI. Recent advances in drug and nutrient transport across the blood-retinal barrier. Expert Opin Drug Metab Toxicol 2018; 14:513-531. [PMID: 29719158 DOI: 10.1080/17425255.2018.1472764] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
INTRODUCTION The blood-retinal barrier (BRB) is the barrier separating the blood and neural retina, and transport systems for low-weight molecules at the BRB are expected to be useful for developing drugs for the treatment of ocular neural disorders and maintaining a healthy retina. Areas covered: This review discusses blood-to-retina and retina-to-blood transport of drugs and nutrients at the BRB. In particular, P-gp (ABCB1/MDR1) has low impact on the transport of cationic drugs at the BRB, suggesting a significant role of novel organic cation transporters in influx and efflux transport of lipophilic cationic drugs between blood and the retina. The transport of pravastatin at the BRB involves transporters including organic anion transporting polypeptide 1a4 (Oatp1a4). Recent studies have shown the involvement of solute carrier transporters in the blood-to-retina transport of nutrients including riboflavin, L-ornithine, β-alanine, and L-histidine, implying that dipeptide transport at the BRB is minimal. Expert opinion: Novel organic cation transport systems and the elimination-dominant transport of pravastatin at the BRB are expected to be useful in systemic drug delivery to the neural retina without CNS side effects. The mechanism of nutrient transport at the BRB is expected to provide a new strategy for delivery of nutrient-mimetic drugs.
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Affiliation(s)
- Yoshiyuki Kubo
- a Department of Pharmaceutics, Graduate School of Medicine and Pharmaceutical Sciences , University of Toyama , Toyama , Japan
| | - Shin-Ichi Akanuma
- a Department of Pharmaceutics, Graduate School of Medicine and Pharmaceutical Sciences , University of Toyama , Toyama , Japan
| | - Ken-Ichi Hosoya
- a Department of Pharmaceutics, Graduate School of Medicine and Pharmaceutical Sciences , University of Toyama , Toyama , Japan
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Grube M, Hagen P, Jedlitschky G. Neurosteroid Transport in the Brain: Role of ABC and SLC Transporters. Front Pharmacol 2018; 9:354. [PMID: 29695968 PMCID: PMC5904994 DOI: 10.3389/fphar.2018.00354] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 03/27/2018] [Indexed: 12/17/2022] Open
Abstract
Neurosteroids, comprising pregnane, androstane, and sulfated steroids can alter neuronal excitability through interaction with ligand-gated ion channels and other receptors and have therefore a therapeutic potential in several brain disorders. They can be formed in brain cells or are synthesized by an endocrine gland and reach the brain by penetrating the blood–brain barrier (BBB). Especially sulfated steroids such as pregnenolone sulfate (PregS) and dehydroepiandrosterone sulfate (DHEAS) depend on transporter proteins to cross membranes. In this review, we discuss the involvement of ATP-binding cassette (ABC)- and solute carrier (SLC)-type membrane proteins in the transport of these compounds at the BBB and in the choroid plexus (CP), but also in the secretion from neurons and glial cells. Among the ABC transporters, especially BCRP (ABCG2) and several MRP/ABCC subfamily members (MRP1, MRP4, MRP8) are expressed in the brain and known to efflux conjugated steroids. Furthermore, several SLC transporters have been shown to mediate cellular uptake of steroid sulfates. These include members of the OATP/SLCO subfamily, namely OATP1A2 and OATP2B1, as well as OAT3 (SLC22A3), which have been reported to be expressed at the BBB, in the CP and in part in neurons. Furthermore, a role of the organic solute transporter OSTα-OSTβ (SLC51A/B) in brain DHEAS/PregS homeostasis has been proposed. This transporter was reported to be localized especially in steroidogenic cells of the cerebellum and hippocampus. To date, the impact of transporters on neurosteroid homeostasis is still poorly understood. Further insights are desirable also with regard to the therapeutic potential of these compounds.
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Affiliation(s)
- Markus Grube
- Department of Pharmacology, Center of Drug Absorption and Transport, University Medicine Greifswald, Greifswald, Germany
| | - Paul Hagen
- Department of Pharmacology, Center of Drug Absorption and Transport, University Medicine Greifswald, Greifswald, Germany
| | - Gabriele Jedlitschky
- Department of Pharmacology, Center of Drug Absorption and Transport, University Medicine Greifswald, Greifswald, Germany
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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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46
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Vellonen KS, Hellinen L, Mannermaa E, Ruponen M, Urtti A, Kidron H. Expression, activity and pharmacokinetic impact of ocular transporters. Adv Drug Deliv Rev 2018; 126:3-22. [PMID: 29248478 DOI: 10.1016/j.addr.2017.12.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/24/2017] [Accepted: 12/13/2017] [Indexed: 12/13/2022]
Abstract
The eye is protected by several tissues that limit the permeability and entry of potentially harmful substances, but also hamper the delivery of drugs in the treatment of ocular diseases. Active transport across the ocular barriers may affect drug distribution, but the impact of drug transporters on ocular drug delivery is not well known. We have collected and critically reviewed the literature for ocular expression and activity of known drug transporters. The review concentrates on drug transporters that have been functionally characterized in ocular tissues or primary cells and on transporters for which there is available expression data at the protein level. Species differences are highlighted, since these may explain observed inconsistencies in the influence of specific transporters on drug disposition. There is variable evidence about the pharmacokinetic role of transporters in ocular tissues. The strongest evidence for the role of active transport is available for the blood-retinal barrier. We explored the role of active transport in the cornea and blood retinal barrier with pharmacokinetic simulations. The simulations show that the active transport is important only in the case of specific parameter combinations.
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47
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Identification of novel cell-impermeant fluorescent substrates for testing the function and drug interaction of Organic Anion-Transporting Polypeptides, OATP1B1/1B3 and 2B1. Sci Rep 2018; 8:2630. [PMID: 29422623 PMCID: PMC5805760 DOI: 10.1038/s41598-018-20815-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/19/2018] [Indexed: 12/15/2022] Open
Abstract
Organic Anion-Transporting Polypeptides are multispecific membrane proteins that regulate the passage of crucial endobiotics and drugs across pharmacological barriers. OATP1B1 and OATP1B3 have been described to play a major role in the hepatic uptake of statins, antivirals and various chemotherapeutics; whereas the pharmacological role of the ubiquitously expressed OATP2B1 is less well characterized. According to current industry standards, in vitro testing for susceptibility to OATP1B1 and 1B3 mediated transport is recommended for drug candidates that are eliminated in part via the liver. Here we show that human OATP1B1, 1B3 and 2B1 transport a series of commercially available viability dyes that are generally believed to be impermeable to intact cells. We demonstrate that the intracellular accumulation of Zombie Violet, Live/Dead Green, Cascade Blue and Alexa Fluor 405 is specifically increased by OATPs. Inhibition of Cascade Blue or Alexa Fluor 405 uptake by known OATP substrates/inhibitors yielded IC50 values in agreement with gold-standard radioligand assays. The fluorescence-based assays described in this study provide a new tool for testing OATP1B/2B1 drug interactions.
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48
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Łukawski K, Raszewski G, Czuczwar SJ. Interactions of aliskiren, a direct renin inhibitor, with antiepileptic drugs in the test of maximal electroshock in mice. Eur J Pharmacol 2018; 819:108-113. [PMID: 29191768 DOI: 10.1016/j.ejphar.2017.11.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 11/13/2017] [Accepted: 11/23/2017] [Indexed: 02/06/2023]
Abstract
Experimental studies showed that certain angiotensin-converting enzyme inhibitors and angiotensin AT1 receptor antagonists can decrease seizure severity in rodents. Additionally, some of these blockers of the renin-angiotensin system have been documented to enhance the anticonvulsant activity of antiepileptic drugs against maximal electroshock-induced seizures. The aim of the current study was to investigate the effect of aliskiren, a direct renin inhibitor and a novel antihypertensive drug, on the protective action of numerous antiepileptic drugs (carbamazepine, valproate, clonazepam, phenobarbital, oxcarbazepine, lamotrigine, topiramate and pregabalin) in the test of maximal electroshock in mice. The examined drugs were administered intraperitoneally. Aliskiren up to a dose of 75mg/kg did not affect the threshold for electroconvulsions, however, aliskiren (75mg/kg) enhanced the anticonvulsant action of clonazepam and valproate. Following aliskiren treatment, a higher brain concentration of valproate was noted, suggesting a pharmacokinetic interaction. In the rota-rod test, the concomitant treatment with aliskiren (50 or 75mg/kg) and clonazepam (22.6mg/kg) impaired motor coordination while clonazepam (22.6mg/kg) alone showed strong tendency towards this impairment. The combination of aliskiren (75mg/kg) with phenobarbital (25.5mg/kg) caused long-term memory deficits in the passive avoidance task. This study shows that there are no negative interactions between aliskiren and the examined antiepileptic drugs as concerns their anticonvulsant activity. Aliskiren even potentiated the anticonvulsant action of clonazepam and valproate against maximal electroshock. The impact of aliskiren alone on seizure activity or on the anticonvulsant and adverse activity of antiepileptic drugs needs further evaluation in other animal models of seizures.
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Affiliation(s)
- Krzysztof Łukawski
- Department of Physiopathology, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland; Department of Pathophysiology, Medical University of Lublin, Jaczewskiego 8, 20-090 Lublin, Poland.
| | - Grzegorz Raszewski
- Department of Physiopathology, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland
| | - Stanisław J Czuczwar
- Department of Physiopathology, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland; Department of Pathophysiology, Medical University of Lublin, Jaczewskiego 8, 20-090 Lublin, Poland
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49
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Zhou W, Hu X, Tam KY. Systemic clearance and brain distribution of carbazole-based cyanine compounds as Alzheimer's disease drug candidates. Sci Rep 2017; 7:16368. [PMID: 29180684 PMCID: PMC5703966 DOI: 10.1038/s41598-017-16635-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 11/15/2017] [Indexed: 02/07/2023] Open
Abstract
SLM and SLOH, two analogues of carbazole-based cyanine compounds, have been shown to inhibit β-amyloid peptide aggregation in vitro and in Alzheimer’s disease model mice, which could be potentially developed into drugs for disease treatment. To pave the way for further pharmacokinetics-pharmacodynamics study, we set to investigate these compounds’ systemic clearance pathways and their brain exposure. We found that they generally exhibited relatively low plasma clearance which comprised of hepatic clearance and biliary clearance. Phase I oxidative metabolites for SLM and for SLOH upon microsomes incubation were identified, and the metabolism by CYP3A4 were found to be the major (>70%) hepatic clearance pathway, while the efflux by P-gp and BCRP located in the canalicular membrane of hepatocytes led to high biliary clearance. The permeation of SLM and SLOH through the brain endothelium was affected by the efflux transporters (P-gp and BCRP) and influx transporter (OATP2B1). The unbound interstitial fluid to plasma ratio (Kpuu,brain) was 8.10 for SLOH and 11.0 for SLM, which favored brain entry and were several folds higher than that in wild-type mice. Taken together, these carbazole compounds displayed low plasma clearance and high brain permeability, which entitle further development.
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Affiliation(s)
- Wei Zhou
- Faculty of Health Sciences, University of Macau, Macau, SAR, P.R. China
| | - Xiaohui Hu
- Faculty of Health Sciences, University of Macau, Macau, SAR, P.R. China
| | - Kin Yip Tam
- Faculty of Health Sciences, University of Macau, Macau, SAR, P.R. China.
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Zhou F, Zhu L, Wang K, Murray M. Recent advance in the pharmacogenomics of human Solute Carrier Transporters (SLCs) in drug disposition. Adv Drug Deliv Rev 2017; 116:21-36. [PMID: 27320645 DOI: 10.1016/j.addr.2016.06.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/01/2016] [Accepted: 06/08/2016] [Indexed: 12/11/2022]
Abstract
Drug pharmacokinetics is influenced by the function of metabolising enzymes and influx/efflux transporters. Genetic variability of these genes is known to impact on clinical therapies. Solute Carrier Transporters (SLCs) are the primary influx transporters responsible for the cellular uptake of drug molecules, which consequently, impact on drug efficacy and toxicity. The Organic Anion Transporting Polypeptides (OATPs), Organic Anion Transporters (OATs) and Organic Cation Transporters (OCTs/OCTNs) are the most important SLCs involved in drug disposition. The information regarding the influence of SLC polymorphisms on drug pharmacokinetics is limited and remains a hot topic of pharmaceutical research. This review summarises the recent advance in the pharmacogenomics of SLCs with an emphasis on human OATPs, OATs and OCTs/OCTNs. Our current appreciation of the degree of variability in these transporters may contribute to better understanding the inter-patient variation of therapies and thus, guide the optimisation of clinical treatments.
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