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El Biali M, Wölfl‐Duchek M, Jackwerth M, Mairinger S, Weber M, Bamminger K, Poschner S, Rausch I, Schindler N, Lozano IH, Jäger W, Nics L, Tournier N, Hacker M, Zeitlinger M, Bauer M, Langer O. St. John's wort extract with a high hyperforin content does not induce P-glycoprotein activity at the human blood-brain barrier. Clin Transl Sci 2024; 17:e13804. [PMID: 38700454 PMCID: PMC11067874 DOI: 10.1111/cts.13804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/04/2024] [Accepted: 04/11/2024] [Indexed: 05/05/2024] Open
Abstract
St. John's wort (SJW) extract, a herbal medicine with antidepressant effects, is a potent inducer of intestinal and/or hepatic cytochrome P450 (CYP) enzymes and P-glycoprotein (P-gp), which can cause clinically relevant drug interactions. It is currently not known whether SJW can also induce P-gp activity at the human blood-brain barrier (BBB), which may potentially lead to decreased brain exposure and efficacy of certain central nervous system (CNS)-targeted P-gp substrate drugs. In this study, we used a combination of positron emission tomography (PET) imaging and cocktail phenotyping to gain a comprehensive picture on the effect of SJW on central and peripheral P-gp and CYP activities. Before and after treatment of healthy volunteers (n = 10) with SJW extract with a high hyperforin content (3-6%) for 12-19 days (1800 mg/day), the activity of P-gp at the BBB was assessed by means of PET imaging with the P-gp substrate [11C]metoclopramide and the activity of peripheral P-gp and CYPs was assessed by administering a low-dose phenotyping cocktail (caffeine, omeprazole, dextromethorphan, and midazolam or fexofenadine). SJW significantly increased peripheral P-gp, CYP3A, and CYP2C19 activity. Conversely, no significant changes in the peripheral metabolism, brain distribution, and P-gp-mediated efflux of [11C]metoclopramide across the BBB were observed following the treatment with SJW extract. Our data suggest that SJW does not lead to significant P-gp induction at the human BBB despite its ability to induce peripheral P-gp and CYPs. Simultaneous intake of SJW with CNS-targeted P-gp substrate drugs is not expected to lead to P-gp-mediated drug interactions at the BBB.
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Affiliation(s)
- Myriam El Biali
- Department of Clinical PharmacologyMedical University of ViennaViennaAustria
- Division of Clinical Pharmacology and ToxicologyGeneva University HospitalsGenevaSwitzerland
| | - Michael Wölfl‐Duchek
- Department of Clinical PharmacologyMedical University of ViennaViennaAustria
- Department of Biomedical Imaging und Image‐guided Therapy, Division of Nuclear MedicineMedical University of ViennaViennaAustria
| | - Matthias Jackwerth
- Department of Clinical PharmacologyMedical University of ViennaViennaAustria
| | - Severin Mairinger
- Department of Clinical PharmacologyMedical University of ViennaViennaAustria
- Department of Biomedical Imaging und Image‐guided Therapy, Division of Nuclear MedicineMedical University of ViennaViennaAustria
| | - Maria Weber
- Department of Clinical PharmacologyMedical University of ViennaViennaAustria
| | - Karsten Bamminger
- Department of Biomedical Imaging und Image‐guided Therapy, Division of Nuclear MedicineMedical University of ViennaViennaAustria
| | - Stefan Poschner
- Department of Pharmaceutical SciencesUniversity of ViennaViennaAustria
| | - Ivo Rausch
- QIMP Team, Center for Medical Physics and Biomedical EngineeringMedical University of ViennaViennaAustria
| | - Natalie Schindler
- Department of Biomedical Imaging und Image‐guided Therapy, Division of Nuclear MedicineMedical University of ViennaViennaAustria
| | | | - Walter Jäger
- Department of Pharmaceutical SciencesUniversity of ViennaViennaAustria
| | - Lukas Nics
- Department of Biomedical Imaging und Image‐guided Therapy, Division of Nuclear MedicineMedical University of ViennaViennaAustria
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BIOMAPS)Université Paris‐Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric JoliotOrsayFrance
| | - Marcus Hacker
- Department of Biomedical Imaging und Image‐guided Therapy, Division of Nuclear MedicineMedical University of ViennaViennaAustria
| | - Markus Zeitlinger
- Department of Clinical PharmacologyMedical University of ViennaViennaAustria
| | - Martin Bauer
- Department of Clinical PharmacologyMedical University of ViennaViennaAustria
| | - Oliver Langer
- Department of Clinical PharmacologyMedical University of ViennaViennaAustria
- Department of Biomedical Imaging und Image‐guided Therapy, Division of Nuclear MedicineMedical University of ViennaViennaAustria
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Mairinger S, Jackwerth M, Soukup O, Blaickner M, Decristoforo C, Nics L, Pahnke J, Hacker M, Zeitlinger M, Langer O. Advancing 6-bromo-7-[ 11C]methylpurine to clinical use: improved regioselective radiosynthesis, non-clinical toxicity data and human dosimetry estimates. EJNMMI Radiopharm Chem 2024; 9:34. [PMID: 38683266 PMCID: PMC11058743 DOI: 10.1186/s41181-024-00265-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024] Open
Abstract
BACKGROUND 6-Bromo-7-[11C]methylpurine ([11C]BMP) is a radiotracer for positron emission tomography (PET) to measure multidrug resistance-associated protein 1 (MRP1) transport activity in different tissues. Previously reported radiosyntheses of [11C]BMP afforded a mixture of 7- and 9-[11C]methyl regioisomers. To prepare for clinical use, we here report an improved regioselective radiosynthesis of [11C]BMP, the results of a non-clinical toxicity study as well as human dosimetry estimates based on mouse PET data. RESULTS [11C]BMP was synthesised by regioselective N7-methylation of 6-bromo-7H-purine (prepared under good manufacturing practice) with [11C]methyl triflate in presence of 2,2,6,6-tetramethylpiperidine magnesium chloride in a TRACERlab™ FX2 C synthesis module. [11C]BMP was obtained within a total synthesis time of approximately 43 min in a decay-corrected radiochemical yield of 20.5 ± 5.2%, based on starting [11C]methyl iodide, with a radiochemical purity > 99% and a molar activity at end of synthesis of 197 ± 130 GBq/μmol (n = 28). An extended single-dose toxicity study conducted in male and female Wistar rats under good laboratory practice after single intravenous (i.v.) administration of unlabelled BMP (2 mg/kg body weight) revealed no test item related adverse effects. Human dosimetry estimates, based on dynamic whole-body PET data in female C57BL/6J mice, suggested that an i.v. injected activity amount of 400 MBq of [11C]BMP will deliver an effective dose in the typical range of 11C-labelled radiotracers. CONCLUSIONS [11C]BMP can be produced in sufficient amounts and acceptable quality for clinical use. Data from the non-clinical safety evaluation showed no adverse effects and suggested that the administration of [11C]BMP will be safe and well tolerated in humans.
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Affiliation(s)
- Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.
| | - Matthias Jackwerth
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Ondřej Soukup
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Matthias Blaickner
- Department Computer Science, University of Applied Sciences Technikum Wien, Vienna, Austria
| | - Clemens Decristoforo
- Department of Nuclear Medicine, Medical University Innsbruck, Innsbruck, Austria
| | - Lukas Nics
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Jens Pahnke
- Translational Neurodegeneration Research and Neuropathology Lab, Department of Clinical Medicine (KlinMed), Medical Faculty, University of Oslo, Oslo, Norway
- Section of Neuropathology Research, Department of Pathology, Clinics for Laboratory Medicine (KLM), Oslo University Hospital, Oslo, Norway
- Institute of Nutritional Medicine (INUM) and Lübeck Institute of Dermatology (LIED), University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
- Department of Pharmacology, Faculty of Medicine, University of Latvia, Rīga, Latvia
- School of Neurobiology, Biochemistry and Biophysics, The Georg S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Marcus Hacker
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
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Hernández-Lozano I, Leterrier S, Mairinger S, Stanek J, Zacher AS, Breyer L, Hacker M, Zeitlinger M, Pahnke J, Tournier N, Wanek T, Langer O. Performance and Sensitivity of [ 99mTc]Tc-sestamibi Compared with Positron Emission Tomography Radiotracers to Measure P-glycoprotein Function in the Kidneys and Liver. Mol Pharm 2024; 21:932-943. [PMID: 38225758 PMCID: PMC10848257 DOI: 10.1021/acs.molpharmaceut.3c01036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/17/2024]
Abstract
P-glycoprotein (P-gp, encoded in humans by the ABCB1 gene and in rodents by the Abcb1a/b genes) is a membrane transporter that can restrict the intestinal absorption and tissue distribution of many drugs and may also contribute to renal and hepatobiliary drug excretion. The aim of this study was to compare the performance and sensitivity of currently available radiolabeled P-gp substrates for positron emission tomography (PET) with the single-photon emission computed tomography (SPECT) radiotracer [99mTc]Tc-sestamibi for measuring the P-gp function in the kidneys and liver. Wild-type, heterozygous (Abcb1a/b(+/-)), and homozygous (Abcb1a/b(-/-)) Abcb1a/b knockout mice were used as models of different P-gp abundance in excretory organs. Animals underwent either dynamic PET scans after intravenous injection of [11C]N-desmethyl-loperamide, (R)-[11C]verapamil, or [11C]metoclopramide or consecutive static SPECT scans after intravenous injection of [99mTc]Tc-sestamibi. P-gp in the kidneys and liver of the mouse models was analyzed with immunofluorescence labeling and Western blotting. In the kidneys, Abcb1a/b() mice had intermediate P-gp abundance compared with wild-type and Abcb1a/b(-/-) mice. Among the four tested radiotracers, renal clearance of radioactivity (CLurine,kidney) was significantly reduced (-83%) in Abcb1a/b(-/-) mice only for [99mTc]Tc-sestamibi. Biliary clearance of radioactivity (CLbile,liver) was significantly reduced in Abcb1a/b(-/-) mice for [11C]N-desmethyl-loperamide (-47%), [11C]metoclopramide (-25%), and [99mTc]Tc-sestamibi (-79%). However, in Abcb1a/b(+/-) mice, CLbile,liver was significantly reduced (-47%) only for [99mTc]Tc-sestamibi. Among the tested radiotracers, [99mTc]Tc-sestamibi performed best in measuring the P-gp function in the kidneys and liver. Owing to its widespread clinical availability, [99mTc]Tc-sestamibi represents a promising probe substrate to assess systemic P-gp-mediated drug-drug interactions and to measure renal and hepatic P-gp function under different (patho-)physiological conditions.
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Affiliation(s)
| | - Sarah Leterrier
- Laboratoire
d’Imagerie Biomédicale Multimodale (BIOMAPS), Université Paris-Saclay, CEA, CNRS, Inserm,
Service Hospitalier Frédéric Joliot, 91401 Orsay, France
| | - Severin Mairinger
- Department
of Clinical Pharmacology, Medical University
of Vienna, 1090 Vienna, Austria
- Department
of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Johann Stanek
- Department
of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Anna S. Zacher
- Department
of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Lara Breyer
- Department
of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Marcus Hacker
- 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
| | - Jens Pahnke
- Department
of Pathology, Section of Neuropathology, Translational Neurodegeneration
Research and Neuropathology Lab, University
of Oslo (UiO) and Oslo University Hospital (OUS), 0372 Oslo, Norway
- Lübeck
Institute of Experimental Dermatology (LIED), Pahnke Lab, University of Lübeck and University Medical
Center Schleswig-Holstein, 23538 Lübeck, Germany
- Department
of Pharmacology, Faculty of Medicine, University
of Latvia, 1004 Ri̅ga, Latvia
- Department
of Neurobiology, The Georg S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Nicolas Tournier
- Laboratoire
d’Imagerie Biomédicale Multimodale (BIOMAPS), Université Paris-Saclay, CEA, CNRS, Inserm,
Service Hospitalier Frédéric Joliot, 91401 Orsay, France
| | - Thomas Wanek
- Department
of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Oliver Langer
- Department
of Clinical Pharmacology, Medical University
of Vienna, 1090 Vienna, Austria
- Department
of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
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Mairinger S, Leterrier S, Filip T, Löbsch M, Pahnke J, Hernández-Lozano I, Stanek J, Tournier N, Zeitlinger M, Hacker M, Langer O, Wanek T. [ 11C]metoclopramide is a sensitive radiotracer to measure moderate decreases in P-glycoprotein function at the blood-brain barrier. J Cereb Blood Flow Metab 2024; 44:142-152. [PMID: 37728771 PMCID: PMC10905639 DOI: 10.1177/0271678x231202336] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 08/23/2023] [Accepted: 08/27/2023] [Indexed: 09/21/2023]
Abstract
The efflux transporter P-glycoprotein (P-gp) at the blood-brain barrier limits the cerebral uptake of various xenobiotics. To assess the sensitivity of [11C]metoclopramide to measure decreased cerebral P-gp function, we performed [11C]metoclopramide PET scans without (baseline) and with partial P-gp inhibition by tariquidar in wild-type, heterozygous Abcb1a/b(+/-) and homozygous Abcb1a/b(-/-) mice as models with controlled levels of cerebral P-gp expression. Brains were collected to quantify P-gp expression with immunohistochemistry. Brain uptake of [11C]metoclopramide was expressed as the area under the brain time-activity curve (AUCbrain) and compared with data previously obtained with (R)-[11C]verapamil and [11C]N-desmethyl-loperamide. Abcb1a/b(+/-) mice had intermediate P-gp expression compared to wild-type and Abcb1a/b(-/-) mice. In baseline scans, all three radiotracers were able to discriminate Abcb1a/b(-/-) from wild-type mice (2.5- to 4.6-fold increased AUCbrain, p ≤ 0.0001). However, only [11C]metoclopramide could discriminate Abcb1a/b(+/-) from wild-type mice (1.46-fold increased AUCbrain, p ≤ 0.001). After partial P-gp inhibition, differences in [11C]metoclopramide AUCbrain between Abcb1a/b(+/-) and wild-type mice (1.39-fold, p ≤ 0.001) remained comparable to baseline. There was a negative correlation between baseline [11C]metoclopramide AUCbrain and ex-vivo-measured P-gp immunofluorescence (r = -0.9875, p ≤ 0.0001). Our data suggest that [11C]metoclopramide is a sensitive radiotracer to measure moderate, but (patho-)physiologically relevant decreases in cerebral P-gp function without the need to co-administer a P-gp inhibitor.
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Affiliation(s)
- Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Sarah Leterrier
- Laboratoire d'Imagerie Biomédicale Multimodale (BIOMAPS), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay, France
| | - Thomas Filip
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, Vienna, Austria
- Institute of Animal Breeding and Genetics & Biomodels Austria, University of Veterinary Medicine, Vienna, Austria
| | - Mathilde Löbsch
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, Vienna, Austria
| | - Jens Pahnke
- Department of Pathology, Section of Neuropathology Research, University of Oslo (UiO) and Oslo University Hospital (OUS), Oslo, Norway
- Drug Development and Chemical Biology Lab, Lübeck Institute of Dermatology (LIED), University of Lübeck, Lübeck, Germany
- Department of Pharmacology, Faculty of Medicine, University of Latvia, Rīga, Latvia
- Department of Neurobiology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | | | - Johann Stanek
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BIOMAPS), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay, France
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Marcus Hacker
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Thomas Wanek
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
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Breuil L, El Biali M, Vodovar D, Marie S, Auvity S, Bauer M, Goutal S, Rodrigo S, Langer O, Tournier N. Parametric Imaging of P-Glycoprotein Function at the Blood-Brain Barrier Using k E,brain-maps Generated from [ 11C]Metoclopramide PET Data in Rats, Nonhuman Primates and Humans. Mol Imaging Biol 2023; 25:1135-1141. [PMID: 37801196 DOI: 10.1007/s11307-023-01864-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/01/2023] [Accepted: 09/26/2023] [Indexed: 10/07/2023]
Abstract
PURPOSE PET imaging using [11C]metoclopramide revealed the importance of P-glycoprotein (P-gp, ABCB1) in mediating the brain-to-blood efflux of substrates across the blood-brain barrier (BBB). In this work, the elimination rate constant from the brain (kE,brain), calculated from dynamic PET images without the need for arterial blood sampling, was evaluated as an outcome parameter for the interpretation of [11C]metoclopramide PET data. PROCEDURES kE,brain parameter was obtained by linear regression of log-transformed brain time-activity curves (TACs). kE,brain values (h-1) obtained under baseline conditions were compared with values obtained after complete P-gp inhibition using tariquidar in rats (n = 4) and baboons (n = 4) or after partial inhibition using cyclosporine A in humans (n = 10). In baboons, the sensitivity of kE,brain to measure complete P-gp inhibition was compared with outcome parameters derived from kinetic modeling using a 1-tissue compartment model (1-TCM). Finally, kE,brain-maps were generated in each species using PMOD software. RESULTS The linear part of the log-transformed brain TACs occurred from 10 to 30 min after radiotracer injection in rats, from 15 to 60 min in baboons, and from 20 to 60 min in humans. P-gp inhibition significantly decreased kE,brain values by 39 ± 12% in rats (p < 0.01), by 32 ± 6% in baboons (p < 0.001), and by 37 ± 22% in humans (p < 0.001). In baboons, P-gp inhibition consistently decreased the brain-to-plasma efflux rate constant k2 (36 ± 9%, p < 0.01) leading to an increase in the total brain volume of distribution (VT, 101 ± 12%, p < 0.001). In all studied species, brain kE,brain-maps displayed decreased P-gp-mediated efflux across the BBB. CONCLUSIONS kE,brain of [11C]metoclopramide provides a simple outcome parameter to describe P-gp function in the living brain when arterial input function data are unavailable, although less sensitive than VT. kE,brain-maps represent easy to compute parametric images reflecting the effect of P-gp on [11C]metoclopramide elimination from the brain.
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Affiliation(s)
- Louise Breuil
- Inserm, CNRS, CEA, BioMaps, Laboratoire d'Imagerie Biomédicale Multimodale Paris-Saclay, Université Paris-Saclay, CEA/SHFJ, 4 Place du Général Leclerc 91400, Orsay, France
- Inserm UMR-S1144, University of Paris Cité, 75006, Paris, France
| | - Myriam El Biali
- Department of Clinical Pharmacology, Medical University of Vienna, 1090, Vienna, Austria
| | - Dominique Vodovar
- Inserm, CNRS, CEA, BioMaps, Laboratoire d'Imagerie Biomédicale Multimodale Paris-Saclay, Université Paris-Saclay, CEA/SHFJ, 4 Place du Général Leclerc 91400, Orsay, France
- Inserm UMR-S1144, University of Paris Cité, 75006, Paris, France
| | - Solène Marie
- Inserm, CNRS, CEA, BioMaps, Laboratoire d'Imagerie Biomédicale Multimodale Paris-Saclay, Université Paris-Saclay, CEA/SHFJ, 4 Place du Général Leclerc 91400, Orsay, France
| | - Sylvain Auvity
- Inserm, CNRS, CEA, BioMaps, Laboratoire d'Imagerie Biomédicale Multimodale Paris-Saclay, Université Paris-Saclay, CEA/SHFJ, 4 Place du Général Leclerc 91400, Orsay, France
- Inserm UMR-S1144, University of Paris Cité, 75006, Paris, France
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090, Vienna, Austria
| | - Sébastien Goutal
- Inserm, CNRS, CEA, BioMaps, Laboratoire d'Imagerie Biomédicale Multimodale Paris-Saclay, Université Paris-Saclay, CEA/SHFJ, 4 Place du Général Leclerc 91400, Orsay, France
| | - Sebastian Rodrigo
- Inserm, CNRS, CEA, BioMaps, Laboratoire d'Imagerie Biomédicale Multimodale Paris-Saclay, Université Paris-Saclay, CEA/SHFJ, 4 Place du Général Leclerc 91400, Orsay, France
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090, Vienna, Austria
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090, Vienna, Austria
| | - Nicolas Tournier
- Inserm, CNRS, CEA, BioMaps, Laboratoire d'Imagerie Biomédicale Multimodale Paris-Saclay, Université Paris-Saclay, CEA/SHFJ, 4 Place du Général Leclerc 91400, Orsay, France.
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6
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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7
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Goutal S, Novell A, Leterrier S, Breuil L, Selingue E, Gerstenmayer M, Marie S, Saubaméa B, Caillé F, Langer O, Truillet C, Larrat B, Tournier N. Imaging the impact of blood-brain barrier disruption induced by focused ultrasound on P-glycoprotein function. J Control Release 2023; 361:483-492. [PMID: 37562557 DOI: 10.1016/j.jconrel.2023.08.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/27/2023] [Accepted: 08/07/2023] [Indexed: 08/12/2023]
Abstract
The P-glycoprotein (P-gp/ABCB1) is a major efflux transporter which impedes the brain delivery of many drugs across the blood-brain barrier (BBB). Focused ultrasound with microbubbles (FUS) enables BBB disruption, which immediate and delayed impact on P-gp function remains unclear. Positron emission tomography (PET) imaging using the radiolabeled substrate [11C]metoclopramide provides a sensitive and translational method to study P-gp function at the living BBB. A FUS protocol was devised in rats to induce a substantial and targeted disruption of the BBB in the left hemisphere. BBB disruption was confirmed by the Evan's Blue extravasation test or the minimally-invasive contrast-enhanced MRI. The expression of P-gp was measured 24 h or 48 h after FUS using immunostaining and fluorescence microscopy. The brain kinetics of [11C]metoclopramide was studied by PET at baseline, and both immediately or 24 h after FUS, with or without half-maximum P-gp inhibition (tariquidar 1 mg/kg). In each condition (n = 4-5 rats per group), brain exposure of [11C]metoclopramide was estimated as the area-under-the-curve (AUC) in regions corresponding to the sonicated volume in the left hemisphere, and the contralateral volume. Kinetic modeling was performed to estimate the uptake clearance ratio (R1) of [11C]metoclopramide in the sonicated volume relative to the contralateral volume. In the absence of FUS, half-maximum P-gp inhibition increased brain exposure (+135.0 ± 12.9%, p < 0.05) but did not impact R1 (p > 0.05). Immediately after FUS, BBB integrity was selectively disrupted in the left hemisphere without any detectable impact on the brain kinetics of [11C]metoclopramide compared with the baseline group (p > 0.05) or the contralateral volume (p > 0.05). 24 h after FUS, BBB integrity was fully restored while P-gp expression was maximally down-regulated (-45.0 ± 4.5%, p < 0.001) in the sonicated volume. This neither impacted AUC nor R1 in the FUS + 24 h group (p > 0.05). Only when P-gp was inhibited with tariquidar were the brain exposure (+130 ± 70%) and R1(+29.1 ± 15.4%) significantly increased in the FUS + 24 h/tariquidar group, relative to the baseline group (p < 0.001). We conclude that the brain kinetics of [11C]metoclopramide specifically depends on P-gp function rather than BBB integrity. Delayed FUS-induced down-regulation of P-gp function can be detected. Our results suggest that almost complete down-regulation is required to substantially enhance the brain delivery of P-gp substrates.
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Affiliation(s)
- Sébastien Goutal
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Anthony Novell
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Sarah Leterrier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Louise Breuil
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France; Université Paris Cité, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France
| | - Erwan Selingue
- Neurospin, Institut Joliot, Direction de la Recherche Fondamentale, CEA, Université Paris Saclay, Gif sur Yvette, France
| | - Matthieu Gerstenmayer
- Neurospin, Institut Joliot, Direction de la Recherche Fondamentale, CEA, Université Paris Saclay, Gif sur Yvette, France
| | - Solène Marie
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Bruno Saubaméa
- Université Paris Cité, Inserm, UMRS-1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France
| | - Fabien Caillé
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Charles Truillet
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France
| | - Benoît Larrat
- Neurospin, Institut Joliot, Direction de la Recherche Fondamentale, CEA, Université Paris Saclay, Gif sur Yvette, France
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 4 place du Général Leclerc, 91401 Orsay, France.
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8
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Mairinger S, Hernández-Lozano I, Zachhuber L, Filip T, Löbsch M, Zeitlinger M, Hacker M, Ehrhardt C, Langer O. Effect of budesonide on pulmonary activity of multidrug resistance-associated protein 1 assessed with PET imaging in rats. Eur J Pharm Sci 2023; 184:106414. [PMID: 36858275 DOI: 10.1016/j.ejps.2023.106414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/10/2023] [Accepted: 02/25/2023] [Indexed: 03/02/2023]
Abstract
Multidrug resistance-associated protein 1 (MRP1/ABCC1) is a highly abundant efflux transporter in the lungs, which protects cells from toxins and oxidative stress and has been implicated in the pathophysiology of chronic obstructive pulmonary disease and cystic fibrosis. There is evidence from in vitro studies that the inhaled glucocorticoid budesonide can inhibit MRP1 activity. We used positron emission tomography (PET) imaging with 6-bromo-7-[11C]methylpurine ([11C]BMP), which is transformed in vivo into a radiolabeled MRP1 substrate, to assess whether intratracheally (i.t.) aerosolized budesonide affects pulmonary MRP1 activity in rats. Three groups of rats (n = 5-6 each) underwent dynamic PET scans of the lungs after i.t. aerosolization of either [11C]BMP alone, or [11C]BMP mixed with either budesonide (0.04 mg, corresponding to the maximum soluble dose) or the model MRP1 inhibitor MK571 (2 mg). From PET-measured radioactivity concentration-time curves, the rate constant describing radioactivity elimination from the right lung (kE,lung) and the area under the curve (AUClung) were calculated from 0 to 5 min after start of the PET scan as measures of pulmonary MRP1 activity. Co-administration of MK571 resulted in a pronounced decrease in kE,lung (25-fold, p < 0.0001) and an increase in AUClung (5.3-fold, p < 0.0001) when compared with vehicle-treated animals. In contrast, in budesonide-treated animals kE,lung and AUClung were not significantly different from the vehicle group. Our results show that i.t. aerosolized budesonide at an approximately 5 times higher dose than the maximum clinical dose leads to no change in pulmonary MRP1 activity, suggesting a lack of an effect of inhaled budesonide treatment on the MRP1-mediated cellular detoxifying capacity of the lungs. However, the strong effect observed for MK571 raises the possibility for the occurrence of transporter-mediated drug-drug interactions at the pulmonary epithelium with inhaled medicines.
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Affiliation(s)
- Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna Austria.
| | - Irene Hernández-Lozano
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria.
| | - Lena Zachhuber
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna Austria.
| | - Thomas Filip
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, 1090 Vienna, Austria; Center for Biomedical Research, Medical University of Vienna, 1090 Vienna, Austria.
| | - Mathilde Löbsch
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, 1090 Vienna, Austria.
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria.
| | - Marcus Hacker
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna Austria.
| | - Carsten Ehrhardt
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna Austria.
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9
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Mairinger S, Hernández-Lozano I, Filip T, Löbsch M, Stanek J, Zeitlinger M, Hacker M, Tournier N, Wanek T, Ehrhardt C, Langer O. Influence of P-glycoprotein on pulmonary disposition of the model substrate [ 11C]metoclopramide assessed by PET imaging in rats. Eur J Pharm Sci 2023; 183:106404. [PMID: 36773747 DOI: 10.1016/j.ejps.2023.106404] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/10/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
In the lungs, the membrane transporter P-glycoprotein (P-gp) is expressed in the apical (i.e. lumen-facing) membrane of airway epithelial cells and in the luminal (blood-facing) membrane of pulmonary capillary endothelial cells. To better understand the influence of P-gp on the pulmonary disposition of inhaled P-gp substrate drugs, we measured the intrapulmonary pharmacokinetics of the intratracheally (i.t.) aerosolized model P-gp substrate [11C]metoclopramide in presence and absence of P-gp activity by means of positron emission tomography (PET) imaging in rats. Data were compared to data previously acquired with the model P-gp substrates (R)-[11C]verapamil and [11C]N-desmethyl-loperamide, using the same experimental set-up. Groups of wild-type rats, either untreated or treated with the P-gp inhibitor tariquidar, and Abcb1a/b(-/-) rats underwent 90-min dynamic PET scans after i.t. aerosolization of [11C]metoclopramide. Lung exposure to [11C]metoclopramide was expressed as the area under the right lung concentration-time curve (AUClung). AUClung values were significantly higher in Abcb1a/b(-/-) rats (1.8-fold, p ≤ 0.0001) and in tariquidar-treated wild-type rats (1.6-fold, p ≤ 0.01) than in untreated wild-type rats. This differed from previously obtained results with (R)-[11C]verapamil and [11C]N-desmethyl-loperamide, which showed decreased exposure in the rat lung in absence of P-gp activity. Our results suggest that transepithelial transfer of [11C]metoclopramide was not or only to a small extent affected by P-gp activity, presumably due to the compound's high passive permeability. The increased lung retention of [11C]metoclopramide may be due to decreased P-gp-mediated clearance into the blood in absence of P-gp activity in capillary endothelial cells. The overall effect of P-gp on the lung exposure to inhaled P-gp substrate drugs may, thus, be determined by a balance of opposing effects at the pulmonary epithelium and endothelium.
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Affiliation(s)
- Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | | | - Thomas Filip
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, 1090 Vienna, Austria; Center for Biomedical Research, Medical University of Vienna, 1090 Vienna, Austria
| | - Mathilde Löbsch
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, 1090 Vienna, Austria
| | - Johann Stanek
- 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
| | - Marcus Hacker
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BIOMAPS), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, 91401 Orsay, France
| | - Thomas Wanek
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Carsten Ehrhardt
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria.
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10
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Hernández-Lozano I, Mairinger S, Filip T, Löbsch M, Stanek J, Kuntner C, Bauer M, Zeitlinger M, Hacker M, Helbich TH, Wanek T, Langer O. Positron Emission Tomography-Based Pharmacokinetic Analysis To Assess Renal Transporter-Mediated Drug-Drug Interactions of Antimicrobial Drugs. Antimicrob Agents Chemother 2023; 67:e0149322. [PMID: 36786609 PMCID: PMC10019293 DOI: 10.1128/aac.01493-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/23/2023] [Indexed: 02/15/2023] Open
Abstract
Transporter-mediated drug-drug interactions (DDIs) are of concern in antimicrobial drug development, as they can have serious safety consequences. We used positron emission tomography (PET) imaging-based pharmacokinetic (PK) analysis to assess the effect of different drugs, which may cause transporter-mediated DDIs, on the tissue distribution and excretion of [18F]ciprofloxacin as a radiolabeled model antimicrobial drug. Mice underwent PET scans after intravenous injection of [18F]ciprofloxacin, without and with pretreatment with either probenecid (150 mg/kg), cimetidine (50 mg/kg), or pyrimethamine (5 mg/kg). A 3-compartment kidney PK model was used to assess the involvement of renal transporters in the examined DDIs. Pretreatment with probenecid and cimetidine significantly decreased the renal clearance (CLrenal) of [18F]ciprofloxacin. The effect of cimetidine (-86%) was greater than that of probenecid (-63%), which contrasted with previously published clinical data. The kidney PK model revealed that the decrease in CLrenal was caused by inhibition of basal uptake transporters and apical efflux transporters in kidney proximal tubule cells. Changes in the urinary excretion of [18F]ciprofloxacin after pretreatment with probenecid and cimetidine resulted in increased blood and organ exposure to [18F]ciprofloxacin. Our results suggest that multiple membrane transporters mediate the tubular secretion of ciprofloxacin, with possible species differences between mice and humans. Concomitant medication inhibiting renal transporters may precipitate DDIs, leading to decreased urinary excretion and increased blood and organ exposure to ciprofloxacin, potentially exacerbating adverse effects. Our study highlights the strength of PET imaging-based PK analysis to assess transporter-mediated DDIs at a whole-body level.
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Affiliation(s)
| | - Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Thomas Filip
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, Vienna, Austria
- Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Mathilde Löbsch
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, Vienna, Austria
| | - Johann Stanek
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Claudia Kuntner
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Marcus Hacker
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Thomas H. Helbich
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Thomas Wanek
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
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11
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Sake JA, Selo MA, Burtnyak L, Dähnhardt HE, Helbet C, Mairinger S, Langer O, Kelly VP, Ehrhardt C. Knockout of ABCC1 in NCI-H441 cells reveals CF to be a suboptimal substrate to study MRP1 activity in organotypic in vitro models. Eur J Pharm Sci 2023; 181:106364. [PMID: 36563915 DOI: 10.1016/j.ejps.2022.106364] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 12/04/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022]
Abstract
Multidrug resistance-associated protein 1 (MRP1/ABCC1) is an efflux transporter responsible for the extrusion of endogenous substances as well as xenobiotics and their respective metabolites. Its high expression levels in lung tissue imply a key role in pulmonary drug disposition. Moreover, its association with inflammatory lung diseases underline MRP1's relevance in drug development and precision-medicine. With the aim to develop a tool to better understand MRP1's role in drug disposition and lung disease, we generated an ABCC1-/- clone based on the human distal lung epithelial cell line NCI-H441 via a targeted CRISPR/Cas9 approach. Successful knockout (KO) of MRP1 was confirmed by qPCR, immunoblot and Sanger sequencing. To assess potential compensatory upregulation of transporters with a similar substrate recognition pattern as MRP1, expression levels of MRP2-9 as well as OAT1-4, 6, 7 and 10 were measured. Functional transporter activity was determined via release studies with two prodrug/substrate pairs, i.e. 5(6)-carboxyfluorescein (CF; formed from its diacetate prodrug) and S-(6-(7-methylpurinyl))glutathione (MPG; formed from its prodrug 6-bromo-7-methylpurine, BMP), respectively. Lastly, transepithelial electrical resistance (TEER) of monolayers of the KO clone were compared with wildtype (WT) NCI-H441 cells. Of eight initially generated clones, the M2 titled clone showed complete absence of mRNA and protein in accordance with the designed genome edit. In transport studies using the substrate CF, however, no differences between the KO clone and WT NCI-H441 cells were observed, whilst no differences in expression of potential compensatory transporters was noted. On the other hand, when using BMP/MPG, the release of MPG was reduced to 11.5% in the KO clone. Based on these results, CF appears to be a suboptimal probe for the study of MRP1 function, particularly in organotypic in vitro and ex vivo models. Our ABCC1-/- NCI-H441 clone further retained the ability to form electrically tight barriers, making it a useful model to study MRP1 function in vitro.
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Affiliation(s)
- Johannes A Sake
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Panoz Institute, Dublin 2, Ireland
| | - Mohammed Ali Selo
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Panoz Institute, Dublin 2, Ireland; Faculty of Pharmacy, University of Kufa, Al-Najaf, Iraq
| | - Lyubomyr Burtnyak
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Henriette E Dähnhardt
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Panoz Institute, Dublin 2, Ireland
| | - Camelia Helbet
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Panoz Institute, Dublin 2, Ireland
| | - Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Vincent P Kelly
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Carsten Ehrhardt
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Panoz Institute, Dublin 2, Ireland.
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Mairinger S, Hernández-Lozano I, Zeitlinger M, Ehrhardt C, Langer O. Nuclear medicine imaging methods as novel tools in the assessment of pulmonary drug disposition. Expert Opin Drug Deliv 2022; 19:1561-1575. [PMID: 36255136 DOI: 10.1080/17425247.2022.2137143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
INTRODUCTION Drugs for the treatment of respiratory diseases are commonly administered by oral inhalation. Yet surprisingly little is known about the pulmonary pharmacokinetics of inhaled molecules. Nuclear medicine imaging techniques (i.e. planar gamma scintigraphy, single-photon emission computed tomography [SPECT] and positron emission tomography [PET]) enable the noninvasive dynamic measurement of the lung concentrations of radiolabeled drugs or drug formulations. This review discusses the potential of nuclear medicine imaging techniques in inhalation biopharmaceutical research. AREAS COVERED (i) Planar gamma scintigraphy studies with radiolabeled inhalation formulations to assess initial pulmonary drug deposition; (ii) imaging studies with radiolabeled drugs to assess their intrapulmonary pharmacokinetics; (iii) receptor occupancy studies to quantify the pharmacodynamic effect of inhaled drugs. EXPERT OPINION Imaging techniques hold potential to bridge the knowledge gap between animal models and humans with respect to the pulmonary disposition of inhaled drugs. However, beyond the mere assessment of the initial lung deposition of inhaled formulations with planar gamma scintigraphy, imaging techniques have rarely been employed in pulmonary drug development. This may be related to several technical challenges encountered with such studies. Considering the wealth of information that can be obtained with imaging studies their use in inhalation biopharmaceutics should be further investigated.
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Affiliation(s)
- Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | | | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Carsten Ehrhardt
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
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13
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Mairinger S, Hernández-Lozano I, Filip T, Sauberer M, Löbsch M, Stanek J, Wanek T, Sake JA, Pekar T, Ehrhardt C, Langer O. Impact of P-gp and BCRP on pulmonary drug disposition assessed by PET imaging in rats. J Control Release 2022; 349:109-117. [PMID: 35798092 DOI: 10.1016/j.jconrel.2022.06.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 06/21/2022] [Accepted: 06/29/2022] [Indexed: 10/17/2022]
Abstract
P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP) are two efflux transporters which are expressed in the apical (i.e. airway lumen-facing) membranes of lung epithelial cells. To assess the influence of P-gp and BCRP on the pulmonary disposition of inhaled drugs, we performed positron emission tomography (PET) imaging in rats after intratracheal aerosolization of two model P-gp/BCRP substrate radiotracers (i.e. [11C]erlotinib and [11C]tariquidar). We studied rat groups in which both transporters were active (i.e. wild-type rats), either of the two transporters was inactive (Abcb1a/b(-/-) and Abcg2(-/-) rats) or both transporters were inactive (Abcg2(-/-) rats in which pulmonary P-gp activity was inhibited by treatment with unlabeled tariquidar). PET-measured lung distribution data were compared with brain-to-plasma radioactivity concentration ratios measured in a gamma counter at the end of the PET scan. For [11C]erlotinib, lung exposure (AUClungs) was moderately but not significantly increased in Abcb1a/b(-/-) rats (1.6-fold) and Abcg2(-/-) rats (1.5-fold), and markedly (3.6-fold, p < 0.0001) increased in tariquidar-treated Abcg2(-/-) rats, compared to wild-type rats. Similarly, the brain uptake of [11C]erlotinib was substantially (4.5-fold, p < 0.0001) increased when both P-gp and BCRP activities were impaired. For [11C]tariquidar, differences in AUClungs between groups pointed into a similar direction as for [11C]erlotinib, but were less pronounced and lacked statistical significance. Our study demonstrates functional P-gp and BCRP activity in vivo in the lungs and further suggests functional redundancy between P-gp and BCRP in limiting the pulmonary uptake of a model P-gp/BCRP substrate, analogous to the blood-brain barrier. Our results suggest that pulmonary efflux transporters are important for the efficacy and safety of inhaled drugs and that their modulation may be exploited in order to improve the pharmacokinetic and pharmacodynamic performance of pulmonary delivered drugs.
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Affiliation(s)
- Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | | | - Thomas Filip
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, Vienna, Austria
| | - Michael Sauberer
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Mathilde Löbsch
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, Vienna, Austria
| | - Johann Stanek
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Thomas Wanek
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Johannes A Sake
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Thomas Pekar
- Biomedical Sciences, University of Applied Sciences Wiener Neustadt, Wiener Neustadt, Austria
| | - Carsten Ehrhardt
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.
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Wölfl-Duchek M, Mairinger S, Hernández-Lozano I, Filip T, Zoufal V, Löbsch M, Stanek J, Kuntner C, Wanek T, Bauer M, Pahnke J, Langer O. Use of PET Imaging to Assess the Efficacy of Thiethylperazine to Stimulate Cerebral MRP1 Transport Activity in Wild-Type and APP/PS1-21 Mice. Int J Mol Sci 2022; 23:6514. [PMID: 35742960 PMCID: PMC9224167 DOI: 10.3390/ijms23126514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 11/16/2022] Open
Abstract
Multidrug resistance-associated protein 1 (MRP1, encoded by the ABCC1 gene) may contribute to the clearance of amyloid-beta (Aβ) peptides from the brain into the blood and stimulation of MRP1 transport activity may be a therapeutic approach to enhance brain Aβ clearance. In this study, we assessed the effect of thiethylperazine, an antiemetic drug which was shown to stimulate MRP1 activity in vitro and to decrease Aβ load in a rapid β-amyloidosis mouse model (APP/PS1-21), on MRP1 transport activity by means of positron emission tomography (PET) imaging with the MRP1 tracer 6-bromo-7-[11C]methylpurine. Groups of wild-type, APP/PS1-21 and Abcc1(-/-) mice underwent PET scans before and after a 5-day oral treatment period with thiethylperazine (15 mg/kg, once daily). The elimination rate constant of radioactivity (kelim) was calculated from time-activity curves in the brain and the lungs as a measure of tissue MRP1 activity. Treatment with thiethylperazine had no significant effect on MRP1 activity in the brain and the lungs of wild-type and APP/PS1-21 mice. This may either be related to a lack of an MRP1-stimulating effect of thiethylperazine in vivo or to other factors, such as substrate-dependent MRP1 stimulation, insufficient target tissue exposure to thiethylperazine or limited sensitivity of the PET tracer to measure MRP1 stimulation.
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Affiliation(s)
- Michael Wölfl-Duchek
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.W.-D.); (S.M.); (I.H.-L.); (M.B.)
| | - Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.W.-D.); (S.M.); (I.H.-L.); (M.B.)
- Department of Biomedical Imaging und Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, 1090 Vienna, Austria; (J.S.); (C.K.); (T.W.)
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (T.F.); (V.Z.); (M.L.)
| | - Irene Hernández-Lozano
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.W.-D.); (S.M.); (I.H.-L.); (M.B.)
| | - Thomas Filip
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (T.F.); (V.Z.); (M.L.)
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, 1090 Vienna, Austria
| | - Viktoria Zoufal
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (T.F.); (V.Z.); (M.L.)
| | - Mathilde Löbsch
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (T.F.); (V.Z.); (M.L.)
- Core Facility Laboratory Animal Breeding and Husbandry, Medical University of Vienna, 1090 Vienna, Austria
| | - Johann Stanek
- Department of Biomedical Imaging und Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, 1090 Vienna, Austria; (J.S.); (C.K.); (T.W.)
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (T.F.); (V.Z.); (M.L.)
| | - Claudia Kuntner
- Department of Biomedical Imaging und Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, 1090 Vienna, Austria; (J.S.); (C.K.); (T.W.)
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (T.F.); (V.Z.); (M.L.)
| | - Thomas Wanek
- Department of Biomedical Imaging und Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, 1090 Vienna, Austria; (J.S.); (C.K.); (T.W.)
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (T.F.); (V.Z.); (M.L.)
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.W.-D.); (S.M.); (I.H.-L.); (M.B.)
| | - Jens Pahnke
- Department of Neuro-/Pathology, Oslo University Hospital (OUS), University of Oslo (UiO), 0424 Oslo, Norway;
- LIED, University of Lübeck, 23562 Lübeck, Germany
- Department of Pharmacology, Faculty of Medicine, University of Latvia, 1586 Rīga, Latvia
- Department of Neurobiology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; (M.W.-D.); (S.M.); (I.H.-L.); (M.B.)
- Department of Biomedical Imaging und Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, 1090 Vienna, Austria; (J.S.); (C.K.); (T.W.)
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (T.F.); (V.Z.); (M.L.)
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15
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Marie S, Hernández-Lozano I, Le Vée M, Breuil L, Saba W, Goislard M, Goutal S, Truillet C, Langer O, Fardel O, Tournier N. Pharmacokinetic Imaging Using 99mTc-Mebrofenin to Untangle the Pattern of Hepatocyte Transporter Disruptions Induced by Endotoxemia in Rats. Pharmaceuticals (Basel) 2022; 15:ph15040392. [PMID: 35455390 PMCID: PMC9028474 DOI: 10.3390/ph15040392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/09/2022] [Accepted: 03/19/2022] [Indexed: 02/04/2023] Open
Abstract
Endotoxemia-induced inflammation may impact the activity of hepatocyte transporters, which control the hepatobiliary elimination of drugs and bile acids. 99mTc-mebrofenin is a non-metabolized substrate of transporters expressed at the different poles of hepatocytes. 99mTc-mebrofenin imaging was performed in rats after the injection of lipopolysaccharide (LPS). Changes in transporter expression were assessed using quantitative polymerase chain reaction of resected liver samples. Moreover, the particular impact of pharmacokinetic drug–drug interactions in the context of endotoxemia was investigated using rifampicin (40 mg/kg), a potent inhibitor of hepatocyte transporters. LPS increased 99mTc-mebrofenin exposure in the liver (1.7 ± 0.4-fold). Kinetic modeling revealed that endotoxemia did not impact the blood-to-liver uptake of 99mTc-mebrofenin, which is mediated by organic anion-transporting polypeptide (Oatp) transporters. However, liver-to-bile and liver-to-blood efflux rates were dramatically decreased, leading to liver accumulation. The transcriptomic profile of hepatocyte transporters consistently showed a downregulation of multidrug resistance-associated proteins 2 and 3 (Mrp2 and Mrp3), which mediate the canalicular and sinusoidal efflux of 99mTc-mebrofenin in hepatocytes, respectively. Rifampicin effectively blocked both the Oatp-mediated influx and the Mrp2/3-related efflux of 99mTc-mebrofenin. The additive impact of endotoxemia and rifampicin led to a 3.0 ± 1.3-fold increase in blood exposure compared with healthy non-treated animals. 99mTc-mebrofenin imaging is useful to investigate disease-associated change in hepatocyte transporter function.
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Affiliation(s)
- Solène Marie
- Université Paris-Saclay, CEA, CNRS, Inserm, Laboratoire d'Imagerie Biomédicale Multimodale, BIOMAPS, Service Hospitalier Frédéric Joliot, 4 Place du Général Leclerc, 91401 Orsay, France
- Faculté de Pharmacie, Université Paris-Saclay, 92296 Châtenay-Malabry, France
- AP-HP, Université Paris-Saclay, Hôpital Bicêtre, Pharmacie Clinique, 94270 Le Kremlin Bicêtre, France
| | | | - Marc Le Vée
- Univ. Rennes, Inserm, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail)-UMR_S 1085, 35043 Rennes, France
| | - Louise Breuil
- Université Paris-Saclay, CEA, CNRS, Inserm, Laboratoire d'Imagerie Biomédicale Multimodale, BIOMAPS, Service Hospitalier Frédéric Joliot, 4 Place du Général Leclerc, 91401 Orsay, France
| | - Wadad Saba
- Université Paris-Saclay, CEA, CNRS, Inserm, Laboratoire d'Imagerie Biomédicale Multimodale, BIOMAPS, Service Hospitalier Frédéric Joliot, 4 Place du Général Leclerc, 91401 Orsay, France
| | - Maud Goislard
- Université Paris-Saclay, CEA, CNRS, Inserm, Laboratoire d'Imagerie Biomédicale Multimodale, BIOMAPS, Service Hospitalier Frédéric Joliot, 4 Place du Général Leclerc, 91401 Orsay, France
| | - Sébastien Goutal
- Université Paris-Saclay, CEA, CNRS, Inserm, Laboratoire d'Imagerie Biomédicale Multimodale, BIOMAPS, Service Hospitalier Frédéric Joliot, 4 Place du Général Leclerc, 91401 Orsay, France
| | - Charles Truillet
- Université Paris-Saclay, CEA, CNRS, Inserm, Laboratoire d'Imagerie Biomédicale Multimodale, BIOMAPS, Service Hospitalier Frédéric Joliot, 4 Place du Général Leclerc, 91401 Orsay, France
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Olivier Fardel
- Univ. Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail)-UMR_S 1085, 35043 Rennes, France
| | - Nicolas Tournier
- Université Paris-Saclay, CEA, CNRS, Inserm, Laboratoire d'Imagerie Biomédicale Multimodale, BIOMAPS, Service Hospitalier Frédéric Joliot, 4 Place du Général Leclerc, 91401 Orsay, France
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16
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Burt T, Roffel AF, Langer O, Anderson K, DiMasi J. Strategic, feasibility, economic, and cultural aspects of Phase 0 approaches. Clin Transl Sci 2022; 15:1355-1379. [PMID: 35278281 PMCID: PMC9199889 DOI: 10.1111/cts.13269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 01/20/2022] [Accepted: 02/28/2022] [Indexed: 12/05/2022] Open
Abstract
Research conducted over the past 2 decades has enhanced the validity and expanded the applications of microdosing and other phase 0 approaches in drug development. Phase 0 approaches can accelerate drug development timelines and reduce attrition in clinical development by increasing the quality of candidates entering clinical development and by reducing the time to “go‐no‐go” decisions. This can be done by adding clinical trial data (both healthy volunteers and patients) to preclinical candidate selection, and by applying methodological and operational advantages that phase 0 have over traditional approaches. The main feature of phase 0 approaches is the limited, subtherapeutic exposure to the test article. This means a reduced risk to research volunteers, and reduced regulatory requirements, timelines, and costs of first‐in‐human (FIH) testing. Whereas many operational aspects of phase 0 approaches are similar to those of other early phase clinical development programs, they have some unique strategic, regulatory, ethical, feasibility, economic, and cultural aspects. Here, we provide a guidance to these operational aspects and include case studies to highlight their potential impact in a range of clinical development scenarios.
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Affiliation(s)
- Tal Burt
- Phase‐0/Microdosing Network New York NY USA
- Burt Consultancy, LLC. New York NY USA
| | - Ad F. Roffel
- ICON plc, Van Swietenlaan 6, 9728 NZ Groningen The Netherlands
| | - Oliver Langer
- Department of Clinical Pharmacology Medical University of Vienna 1090 Vienna Austria
- Department of Biomedical Imaging and Image‐guided Therapy Medical University of Vienna 1090 Vienna Austria
| | | | - Joseph DiMasi
- Tufts Center for the Study of Drug Development Tufts University Boston MA USA
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17
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Oesterreicher Z, Eberl S, Wulkersdorfer B, Matzneller P, Eder C, van Duijn E, Vaes WHJ, Reiter B, Stimpfl T, Jäger W, Nussbaumer-Proell A, Marhofer D, Marhofer P, Langer O, Zeitlinger M. Microdosing as a Potential Tool to Enhance Clinical Development of Novel Antibiotics: A Tissue and Plasma PK Feasibility Study with Ciprofloxacin. Clin Pharmacokinet 2022; 61:697-707. [PMID: 34997559 PMCID: PMC9095552 DOI: 10.1007/s40262-021-01091-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2021] [Indexed: 12/24/2022]
Abstract
Background and Objective In microdose studies, drug pharmacokinetics is measured in humans after administration of subtherapeutic doses. While previous microdose studies focused primarily on plasma pharmacokinetics, we set out to evaluate the feasibility of microdosing for a pharmacokinetic assessment in subcutaneous tissue and epithelial lining fluid. Methods Healthy subjects received a single intravenous bolus injection of a microdose of [14C]ciprofloxacin (1.1 µg, 7 kBq) with (cohort A, n = 9) or without (cohort B, n = 9) a prior intravenous infusion of a therapeutic dose of unlabeled ciprofloxacin (400 mg). Microdialysis and bronchoalveolar lavage were applied for determination of subcutaneous and intrapulmonary drug concentrations. Microdose [14C]ciprofloxacin was quantified by accelerator mass spectrometry and therapeutic-dose ciprofloxacin by liquid chromatography–tandem mass spectrometry. Results The pharmacokinetics of therapeutic-dose ciprofloxacin (cohort A) in plasma, subcutaneous tissue, and epithelial lining fluid was in accordance with previous data. In plasma and subcutaneous tissue, the dose-adjusted area under the concentration–time curve of microdose ciprofloxacin was similar in cohorts A and B and within an 0.8-fold to 1.1-fold range of the area under the concentration–time curve of therapeutic-dose ciprofloxacin. Penetration of microdose ciprofloxacin into subcutaneous tissue was similar in cohorts A and B and comparable to that of therapeutic-dose ciprofloxacin with subcutaneous tissue-to-plasma area under the concentration–time curve ratios of 0.44, 0.44, and 0.38, respectively. Penetration of microdose ciprofloxacin into epithelial lining fluid was highly variable and failed to predict the epithelial lining fluid penetration of therapeutic-dose ciprofloxacin. Conclusions Our study confirms the feasibility of microdosing for pharmacokinetic measurements in plasma and subcutaneous tissue. Microdosing combined with microdialysis is a potentially useful tool in clinical antimicrobial drug development, but its applicability for the assessment of pulmonary pharmacokinetics with bronchoalveolar lavage requires further studies. Clinical Trial Registration ClinicalTrials.gov NCT03177720 (registered 6 June, 2017). Supplementary Information The online version contains supplementary material available at 10.1007/s40262-021-01091-1.
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Affiliation(s)
- Zoe Oesterreicher
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria.,Internal Medicine 2, Gastroenterology and Hepatology and Rheumatology, University Hospital of St. Pölten, St. Pölten, Austria
| | - Sabine Eberl
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Beatrix Wulkersdorfer
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Peter Matzneller
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Claudia Eder
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | | | | | - Birgit Reiter
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Thomas Stimpfl
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Walter Jäger
- Department of Pharmaceutical Sciences, University of Vienna, Vienna, Austria
| | - Alina Nussbaumer-Proell
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Daniela Marhofer
- Department of Anaesthesia, General Intensive Care and Pain Therapy, Medical University of Vienna, Vienna, Austria
| | - Peter Marhofer
- Department of Anaesthesia, General Intensive Care and Pain Therapy, Medical University of Vienna, Vienna, Austria.,Orthopaedic Hospital Speising, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria.
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Breuil L, Marie S, Goutal S, Auvity S, Truillet C, Saba W, Langer O, Caillé F, Tournier N. Comparative vulnerability of PET radioligands to partial inhibition of P-glycoprotein at the blood-brain barrier: A criterion of choice? J Cereb Blood Flow Metab 2022; 42:175-185. [PMID: 34496661 PMCID: PMC8721783 DOI: 10.1177/0271678x211045444] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Only partial deficiency/inhibition of P-glycoprotein (P-gp, ABCB1) function at the blood-brain barrier (BBB) is likely to occur in pathophysiological situations or drug-drug interactions. This raises questions regarding the sensitivity of available PET imaging probes to detect moderate changes in P-gp function at the living BBB. In vitro, the half-maximum inhibitory concentration (IC50) of the potent P-gp inhibitor tariquidar in P-gp-overexpressing cells was significantly different using either [11C]verapamil (44 nM), [11C]N-desmethyl-loperamide (19 nM) or [11C]metoclopramide (4 nM) as substrate probes. In vivo PET imaging in rats showed that the half-maximum inhibition of P-gp-mediated efflux of [11C]metoclopramide, achieved using 1 mg/kg tariquidar (in vivo IC50 = 82 nM in plasma), increased brain exposure by 2.1-fold for [11C]metoclopramide (p < 0.05, n = 4) and 2.4-fold for [11C]verapamil (p < 0.05, n = 4), whereby cerebral uptake of the "avid" substrate [11C]N-desmethyl-loperamide was unaffected (p > 0.05, n = 4). This comparative study points to differences in the "vulnerability" to P-gp inhibition among radiolabeled substrates, which were apparently unrelated to their "avidity" (maximal response to P-gp inhibition). Herein, we advocate that partial inhibition of transporter function, in addition to complete inhibition, should be a primary criterion of evaluation regarding the sensitivity of radiolabeled substrates to detect moderate but physiologically-relevant changes in transporter function in vivo.
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Affiliation(s)
- Louise Breuil
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay France.,Pharmacy Department, Robert-Debré Hospital, AP-HP, Université de Paris, Paris, France
| | - Solène Marie
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay France.,Pharmacy Department, Bicêtre Hospital, AP-HP, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Sébastien Goutal
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay France
| | - Sylvain Auvity
- Pharmacy Department, Necker Hospital, AP-HP, UMR-S 1144, Université de Paris, Paris, France
| | - Charles Truillet
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay France
| | - Wadad Saba
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay France
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Fabien Caillé
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay France
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay France
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19
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Hernández-Lozano I, Mairinger S, Filip T, Sauberer M, Wanek T, Stanek J, Sake JA, Pekar T, Ehrhardt C, Langer O. PET imaging to assess the impact of P-glycoprotein on pulmonary drug delivery in rats. J Control Release 2021; 342:44-52. [PMID: 34971693 DOI: 10.1016/j.jconrel.2021.12.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/26/2021] [Accepted: 12/23/2021] [Indexed: 12/13/2022]
Abstract
Several drugs approved for inhalation for the treatment of pulmonary diseases are substrates of the adenosine triphosphate-binding cassette (ABC) transporter P-glycoprotein (P-gp). P-gp is expressed in the apical membrane of pulmonary epithelial cells and could play a role in modulating the pulmonary absorption and distribution of inhaled drugs, thereby potentially contributing to variability in therapeutic response and/or systemic side effects. We developed a new in vivo experimental approach to assess the functional impact of P-gp on the pulmonary delivery of inhaled drugs in rats. By using positron emission tomography (PET) imaging, we measured the intrapulmonary pharmacokinetics of the model P-gp substrates (R)-[11C]verapamil ([11C]VPM) and [11C]-N-desmethyl-loperamide ([11C]dLOP) administered by intratracheal aerosolization in three rat groups: wild-type, Abcb1a/b(-/-) and wild-type treated with the P-gp inhibitor tariquidar. Lung exposure (AUClung_right) to [11C]VPM was 64% and 50% lower (p < 0.05) in tariquidar-treated and in Abcb1a/b(-/-) rats, respectively, compared to untreated wild-type rats. For [11C]dLOP, AUClung_right was 59% and 34% lower (p < 0.05) in tariquidar-treated and in Abcb1a/b(-/-) rats, respectively. Our results show that P-gp can affect the pulmonary disposition of inhaled P-gp substrates, whereby a decrease in P-gp activity may lead to lower lung exposure and potentially to a decrease in therapeutic efficacy. Our study highlights the potential of PET imaging with intratracheally aerosolized radiotracers to assess the impact of membrane transporters on pulmonary drug delivery, in rodents and potentially also in humans.
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Affiliation(s)
| | - Severin Mairinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria; Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Thomas Filip
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria; Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Michael Sauberer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Austria
| | - Thomas Wanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Austria
| | - Johann Stanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Austria
| | - Johannes A Sake
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Thomas Pekar
- Biomedical Sciences, University of Applied Sciences Wiener Neustadt, Wiener Neustadt, Austria
| | - Carsten Ehrhardt
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria; Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria; Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Austria.
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20
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Filip T, Mairinger S, Neddens J, Sauberer M, Flunkert S, Stanek J, Wanek T, Okamura N, Langer O, Hutter-Paier B, Kuntner C. Characterization of an APP/tau rat model of Alzheimer's disease by positron emission tomography and immunofluorescent labeling. Alzheimers Res Ther 2021; 13:175. [PMID: 34656177 PMCID: PMC8522096 DOI: 10.1186/s13195-021-00916-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 10/05/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND To better understand the etiology and pathomechanisms of Alzheimer's disease, several transgenic animal models that overexpress human tau or human amyloid-beta (Aβ) have been developed. In the present study, we generated a novel transgenic rat model by cross-breeding amyloid precursor protein (APP) rats with tau rats. We characterized this model by performing positron emission tomography scans combined with immunofluorescent labeling and cerebrospinal fluid analyses. METHODS APP/Tau rats were generated by cross-breeding male McGill-R-Thy1-APP transgenic rats with female hTau-40/P301L transgenic rats. APP/Tau double transgenic rats and non-transgenic (ntg) littermates aged 7, 13, and 21 months were subjected to dynamic [11C] PiB scan and dynamic [18F]THK-5317 scans. For regional brain analysis, a template was generated from anatomical MR images of selected animals, which was co-registered with the PET images. Regional analysis was performed by application of the simplified reference tissue model ([11C]PiB data), whereas [18F]THK-5317 data were analyzed using a 2-tissue compartment model and Logan graphical analysis. In addition, immunofluorescent labeling (tau, amyloid) and cerebrospinal fluid analyses were performed. RESULTS [11C]PiB binding potential (BPND) and [18F]THK-5317 volume of distribution (VT) showed an increase with age in several brain regions in the APP/Tau group but not in the ntg control group. Immunohistochemical analysis of brain slices of PET-scanned animals revealed a positive correlation between Aβ labeling and [11C]PiB regional BPND. Tau staining yielded a trend towards higher levels in the cortex and hippocampus of APP/Tau rats compared with ntg littermates, but without reaching statistical significance. No correlation was found between tau immunofluorescence labeling results and the respective [18F]THK-5317 VT values. CONCLUSIONS We thoroughly characterized a novel APP/Tau rat model using combined PET imaging and immunofluorescence analysis. We observed an age-related increase in [11C]PiB and [18F]THK-5317 binding in several brain regions in the APP/Tau group but not in the ntg group. Although we were able to reveal a positive correlation between amyloid labeling and [11C]PiB regional brain uptake, we observed relatively low human tau and amyloid fibril expression levels and a somewhat unstable brain pathology which questions the utility of this animal model for further studies.
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Affiliation(s)
- Thomas Filip
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444, Seibersdorf, Austria
- Department of Biomedical Research, Medical University Vienna, Vienna, Austria
| | - Severin Mairinger
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444, Seibersdorf, Austria
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Joerg Neddens
- Neuropharmacology, QPS Austria GmbH, Grambach, Austria
| | - Michael Sauberer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444, Seibersdorf, Austria
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | | | - Johann Stanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444, Seibersdorf, Austria
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Thomas Wanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444, Seibersdorf, Austria
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Nobuyuki Okamura
- Division of Pharmacology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Oliver Langer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444, Seibersdorf, Austria
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | | | - Claudia Kuntner
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444, Seibersdorf, Austria.
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.
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21
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Tournier N, Goutal S, Mairinger S, Hernández-Lozano I, Filip T, Sauberer M, Caillé F, Breuil L, Stanek J, Freeman AF, Novarino G, Truillet C, Wanek T, Langer O. Complete inhibition of ABCB1 and ABCG2 at the blood-brain barrier by co-infusion of erlotinib and tariquidar to improve brain delivery of the model ABCB1/ABCG2 substrate [ 11C]erlotinib. J Cereb Blood Flow Metab 2021; 41:1634-1646. [PMID: 33081568 PMCID: PMC8221757 DOI: 10.1177/0271678x20965500] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
P-glycoprotein (ABCB1) and breast cancer resistance protein (ABCG2) restrict at the blood-brain barrier (BBB) the brain distribution of the majority of currently known molecularly targeted anticancer drugs. To improve brain delivery of dual ABCB1/ABCG2 substrates, both ABCB1 and ABCG2 need to be inhibited simultaneously at the BBB. We examined the feasibility of simultaneous ABCB1/ABCG2 inhibition with i.v. co-infusion of erlotinib and tariquidar by studying brain distribution of the model ABCB1/ABCG2 substrate [11C]erlotinib in mice and rhesus macaques with PET. Tolerability of the erlotinib/tariquidar combination was assessed in human embryonic stem cell-derived cerebral organoids. In mice and macaques, baseline brain distribution of [11C]erlotinib was low (brain distribution volume, VT,brain < 0.3 mL/cm3). Co-infusion of erlotinib and tariquidar increased VT,brain in mice by 3.0-fold and in macaques by 3.4- to 5.0-fold, while infusion of erlotinib alone or tariquidar alone led to less pronounced VT,brain increases in both species. Treatment of cerebral organoids with erlotinib/tariquidar led to an induction of Caspase-3-dependent apoptosis. Co-infusion of erlotinib/tariquidar may potentially allow for complete ABCB1/ABCG2 inhibition at the BBB, while simultaneously achieving brain-targeted EGFR inhibition. Our protocol may be applicable to enhance brain delivery of molecularly targeted anticancer drugs for a more effective treatment of brain tumors.
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Affiliation(s)
- Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay, France
| | - Sebastien Goutal
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay, France.,MIRCen, CEA/IBFJ/DRF-JACOB/LMN, UMR CEA CNRS 9199-Université Paris Saclay, Fontenay-aux-Roses, France
| | - Severin Mairinger
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | | | - Thomas Filip
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Michael Sauberer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Fabien Caillé
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay, France
| | - Louise Breuil
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay, France
| | - Johann Stanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Anna F Freeman
- Institute of Science and Technology (IST) Austria, Klosterneuburg, Austria
| | - Gaia Novarino
- Institute of Science and Technology (IST) Austria, Klosterneuburg, Austria
| | - Charles Truillet
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), Université Paris-Saclay, CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Orsay, France
| | - Thomas Wanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Oliver Langer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.,Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Department of Biomedical Imaging und Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
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22
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El Biali M, Karch R, Philippe C, Haslacher H, Tournier N, Hacker M, Zeitlinger M, Schmidl D, Langer O, Bauer M. ABCB1 and ABCG2 Together Limit the Distribution of ABCB1/ABCG2 Substrates to the Human Retina and the ABCG2 Single Nucleotide Polymorphism Q141K (c.421C> A) May Lead to Increased Drug Exposure. Front Pharmacol 2021; 12:698966. [PMID: 34220523 PMCID: PMC8242189 DOI: 10.3389/fphar.2021.698966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/04/2021] [Indexed: 12/26/2022] Open
Abstract
The widely expressed and poly-specific ABC transporters breast cancer resistance protein (ABCG2) and P-glycoprotein (ABCB1) are co-localized at the blood-brain barrier (BBB) and have shown to limit the brain distribution of several clinically used ABCB1/ABCG2 substrate drugs. It is currently not known to which extent these transporters, which are also expressed at the blood-retinal barrier (BRB), may limit drug distribution to the human eye and whether the ABCG2 reduced-function single-nucleotide polymorphism (SNP) Q141K (c.421C > A) has an impact on retinal drug distribution. Ten healthy male volunteers (five subjects with the c.421CC and c.421CA genotype, respectively) underwent two consecutive positron emission tomography (PET) scans after intravenous injection of the model ABCB1/ABCG2 substrate [11C]tariquidar. The second PET scan was performed with concurrent intravenous infusion of unlabelled tariquidar to inhibit ABCB1 in order to specifically reveal ABCG2 function.In response to ABCB1 inhibition with unlabelled tariquidar, ABCG2 c.421C > A genotype carriers showed significant increases (as compared to the baseline scan) in retinal radiotracer influx K1 (+62 ± 57%, p = 0.043) and volume of distribution VT (+86 ± 131%, p = 0.043), but no significant changes were observed in subjects with the c.421C > C genotype. Our results provide the first evidence that ABCB1 and ABCG2 may together limit the distribution of systemically administered ABCB1/ABCG2 substrate drugs to the human retina. Functional redundancy between ABCB1 and ABCG2 appears to be compromised in carriers of the c.421C > A SNP who may therefore be more susceptible to transporter-mediated drug-drug interactions at the BRB than non-carriers.
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Affiliation(s)
- Myriam El Biali
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, VIE, Austria
| | - Rudolf Karch
- Centre for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Vienna, VIE, Austria
| | - Cécile Philippe
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, VIE, Austria
| | - Helmuth Haslacher
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, VIE, Austria
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Université Paris-Saclay, Orsay, France
| | - Marcus Hacker
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, VIE, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, VIE, Austria
| | - Doreen Schmidl
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, VIE, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, VIE, Austria.,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, VIE, Austria
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, VIE, Austria
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23
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Hernández-Lozano I, Wanek T, Sauberer M, Filip T, Mairinger S, Stanek J, Traxl A, Karch R, Schuetz JD, Langer O. Influence of ABC transporters on the excretion of ciprofloxacin assessed with PET imaging in mice. Eur J Pharm Sci 2021; 163:105854. [PMID: 33865975 DOI: 10.1016/j.ejps.2021.105854] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/12/2021] [Accepted: 04/13/2021] [Indexed: 12/31/2022]
Abstract
Ciprofloxacin is a commonly prescribed fluoroquinolone antibiotic which is cleared by active tubular secretion and intestinal excretion. Ciprofloxacin is a known substrate of the ATP-binding cassette (ABC) transporters breast cancer resistance protein (BCRP) and multidrug resistance-associated protein 4 (MRP4). In this work, we used positron emission tomography (PET) imaging to investigate the influence of BCRP, MRP4, MRP2 and P-glycoprotein (P-gp) on the excretion of [18F]ciprofloxacin in mice. Dynamic 90-min PET scans were performed after intravenous injection of [18F]ciprofloxacin in wild-type mice without and with pre-treatment with the broad-spectrum MRP inhibitor MK571. Moreover, [18F]ciprofloxacin PET scans were performed in Abcc4(-/-), Abcc2(-/-), Abcc4(-/-)Abcg2(-/-) and Abcb1a/b(-/-)Abcg2(-/-) mice. In addition to non-compartmental pharmacokinetic (PK) analysis, a novel three-compartment PK model was developed for a detailed assessment of the renal disposition of [18F]ciprofloxacin. In MK571 pre-treated mice, a significant increase in the blood exposure to [18F]ciprofloxacin was observed along with a significant reduction in the renal and intestinal clearances. PK modelling revealed a significant reduction in renal radioactivity uptake (CL1) and in the rate constants for transfer of radioactivity from the corticomedullary renal region into blood (k2) and urine (k3), respectively, after MK571 administration. No changes in the renal clearance or in the estimated kidney PK model parameters were observed in any of the studied knockout models, while a significant reduction in the intestinal clearance was observed in Abcc2(-/-) and Abcc4(-/-)Abcg2(-/-) mice. Our data failed to reveal a role of any of the studied ABC transporters in the tubular secretion of ciprofloxacin. This may indicate that ciprofloxacin is handled in the kidneys by more than one transporter family, most likely with a great degree of mutual functional redundancy. Our study highlights the potential of PET imaging for an assessment of transporter-mediated renal excretion of radiolabelled drugs.
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Affiliation(s)
- Irene Hernández-Lozano
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria.
| | - Thomas Wanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria.
| | - Michael Sauberer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria.
| | - Thomas Filip
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria.
| | - Severin Mairinger
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria.
| | - Johann Stanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria.
| | - Alexander Traxl
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria.
| | - Rudolf Karch
- Center for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, 1090 Vienna, Austria.
| | - John D Schuetz
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, 38105 Memphis, TN, USA.
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria; Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, 1090 Vienna, Austria.
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24
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Marie S, Hernández-Lozano I, Langer O, Tournier N. Repurposing 99mTc-Mebrofenin as a Probe for Molecular Imaging of Hepatocyte Transporters. J Nucl Med 2021; 62:1043-1047. [PMID: 33674399 DOI: 10.2967/jnumed.120.261321] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/01/2021] [Indexed: 12/24/2022] Open
Abstract
Hepatocyte transporters control the hepatobiliary elimination of many drugs, metabolites, and endogenous substances. Hepatocyte transporter function is altered in several pathophysiologic situations and can be modulated by certain drugs, with a potential impact for pharmacokinetics and drug-induced liver injury. The development of substrate probes with optimal properties for selective and quantitative imaging of hepatic transporters remains a challenge. 99mTc-mebrofenin has been used for decades for hepatobiliary scintigraphy, but the specific transporters controlling its liver kinetics have not been characterized until recently. These include sinusoidal influx transporters (organic anion-transporting polypeptides) responsible for hepatic uptake of 99mTc-mebrofenin, and efflux transporters (multidrug resistance-associated proteins) mediating its canalicular (liver-to-bile) and sinusoidal (liver-to-blood) excretion. Pharmacokinetic modeling enables molecular interpretation of 99mTc-mebrofenin scintigraphy data, thus offering a widely available translational method to investigate transporter-mediated drug-drug interactions in vivo. 99mTc-mebrofenin allows for phenotyping transporter function at the different poles of hepatocytes as a biomarker of liver function.
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Affiliation(s)
| | | | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale, BioMaps, Université Paris-Saclay, CEA, CNRS, INSERM, Service Hospitalier Frédéric Joliot, Orsay, France
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25
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Bauer M, Barna S, Blaickner M, Prosenz K, Bamminger K, Pichler V, Tournier N, Hacker M, Zeitlinger M, Karanikas G, Langer O. Human Biodistribution and Radiation Dosimetry of the P-Glycoprotein Radiotracer [ 11C]Metoclopramide. Mol Imaging Biol 2021; 23:180-185. [PMID: 33481175 PMCID: PMC7910245 DOI: 10.1007/s11307-021-01582-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/23/2020] [Accepted: 01/06/2021] [Indexed: 11/26/2022]
Abstract
Purpose To assess in healthy volunteers the whole-body distribution and dosimetry of [11C]metoclopramide, a new positron emission tomography (PET) tracer to measure P-glycoprotein activity at the blood-brain barrier. Procedures Ten healthy volunteers (five women, five men) were intravenously injected with 387 ± 49 MBq of [11C]metoclopramide after low dose CT scans and were then imaged by whole-body PET scans from head to upper thigh over approximately 70 min. Ten source organs (brain, thyroid gland, right lung, myocardium, liver, gall bladder, left kidney, red bone marrow, muscle and the contents of the urinary bladder) were manually delineated on whole-body images. Absorbed doses were calculated with QDOSE (ABX-CRO) using the integrated IDAC-Dose 2.1 module. Results The majority of the administered dose of [11C]metoclopramide was taken up into the liver followed by urinary excretion and, to a smaller extent, biliary excretion of radioactivity. The mean effective dose of [11C]metoclopramide was 1.69 ± 0.26 μSv/MBq for female subjects and 1.55 ± 0.07 μSv/MBq for male subjects. The two organs receiving the highest radiation doses were the urinary bladder (10.81 ± 0.23 μGy/MBq and 8.78 ± 0.89 μGy/MBq) and the liver (6.80 ± 0.78 μGy/MBq and 4.91 ± 0.74 μGy/MBq) for female and male subjects, respectively. Conclusions [11C]Metoclopramide showed predominantly renal excretion, and is safe and well tolerated in healthy adults. The effective dose of [11C]metoclopramide was comparable to other 11C-labeled PET tracers. Supplementary Information The online version contains supplementary material available at 10.1007/s11307-021-01582-4.
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Affiliation(s)
- Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
| | - Sandra Barna
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Matthias Blaickner
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
- Center for Medical Physics Biomedical Engineering, Medical University of Vienna, Vienna, Austria
| | - Konstantin Prosenz
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Karsten Bamminger
- Department of Biomedical Imaging und Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Verena Pichler
- Department of Biomedical Imaging und Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Université Paris-Saclay, Orsay, France
| | - Marcus Hacker
- Department of Biomedical Imaging und Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Georgios Karanikas
- Department of Biomedical Imaging und Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
- Department of Biomedical Imaging und Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
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26
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Hernández-Lozano I, Mairinger S, Sauberer M, Stanek J, Filip T, Wanek T, Ciarimboli G, Tournier N, Langer O. Influence of Cation Transporters (OCTs and MATEs) on the Renal and Hepatobiliary Disposition of [ 11C]Metoclopramide in Mice. Pharm Res 2021; 38:127-140. [PMID: 33559045 PMCID: PMC7902338 DOI: 10.1007/s11095-021-03002-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/04/2020] [Indexed: 11/25/2022]
Abstract
PURPOSE To investigate the role of cation transporters (OCTs, MATEs) in the renal and hepatic disposition of the radiolabeled antiemetic drug [11C]metoclopramide in mice with PET. METHODS PET was performed in wild-type mice after administration of an intravenous microdose (<1 μg) of [11C]metoclopramide without and with co-administration of either unlabeled metoclopramide (5 or 10 mg/kg) or the prototypical cation transporter inhibitors cimetidine (150 mg/kg) or sulpiride (25 mg/kg). [11C]Metoclopramide PET was also performed in wild-type and Slc22a1/2(-/-) mice. Radiolabeled metabolites were measured at 15 min after radiotracer injection and PET data were corrected for radiolabeled metabolites. RESULTS [11C]Metoclopramide was highly metabolized and [11C]metoclopramide-derived radioactivity was excreted into the urine. The different investigated treatments decreased (~2.5-fold) the uptake of [11C]metoclopramide from plasma into the kidney and liver, inhibited metabolism and decreased (up to 3.8-fold) urinary excretion, which resulted in increased plasma concentrations of [11C]metoclopramide. Kidney and liver uptake were moderately (~1.3-fold) reduced in Slc22a1/2(-/-) mice. CONCLUSIONS Our results suggest a contribution of OCT1/2 to the kidney and liver uptake and of MATEs to the urinary excretion of [11C]metoclopramide in mice. Cation transporters may contribute, next to variability in the activity of metabolizing enzymes, to variability in metoclopramide pharmacokinetics and side effects.
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Affiliation(s)
- Irene Hernández-Lozano
- Department of Clinical Pharmacology, Medical University of Vienna, A-1090, Vienna, Austria
| | - Severin Mairinger
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Michael Sauberer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Johann Stanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Thomas Filip
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Thomas Wanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Giuliano Ciarimboli
- Medicine Clinic D. Experimental Nephrology, University Hospital Münster, Münster, Germany
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Université Paris-Saclay, Orsay, France
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, A-1090, Vienna, Austria.
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria.
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27
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Wanek T, Zoufal V, Brackhan M, Krohn M, Mairinger S, Filip T, Sauberer M, Stanek J, Pekar T, Pahnke J, Langer O. Brain Distribution of Dual ABCB1/ABCG2 Substrates Is Unaltered in a Beta-Amyloidosis Mouse Model. Int J Mol Sci 2020; 21:E8245. [PMID: 33153231 PMCID: PMC7663372 DOI: 10.3390/ijms21218245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/27/2020] [Accepted: 10/28/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND ABCB1 (P-glycoprotein) and ABCG2 (breast cancer resistance protein) are co-localized at the blood-brain barrier (BBB), where they restrict the brain distribution of many different drugs. Moreover, ABCB1 and possibly ABCG2 play a role in Alzheimer's disease (AD) by mediating the brain clearance of beta-amyloid (Aβ) across the BBB. This study aimed to compare the abundance and activity of ABCG2 in a commonly used β-amyloidosis mouse model (APP/PS1-21) with age-matched wild-type mice. METHODS The abundance of ABCG2 was assessed by semi-quantitative immunohistochemical analysis of brain slices of APP/PS1-21 and wild-type mice aged 6 months. Moreover, the brain distribution of two dual ABCB1/ABCG2 substrate radiotracers ([11C]tariquidar and [11C]erlotinib) was assessed in APP/PS1-21 and wild-type mice with positron emission tomography (PET). [11C]Tariquidar PET scans were performed without and with partial inhibition of ABCG2 with Ko143, while [11C]erlotinib PET scans were only performed under baseline conditions. RESULTS Immunohistochemical analysis revealed a significant reduction (by 29-37%) in the number of ABCG2-stained microvessels in the brains of APP/PS1-21 mice. Partial ABCG2 inhibition significantly increased the brain distribution of [11C]tariquidar in APP/PS1-21 and wild-type mice, but the brain distribution of [11C]tariquidar did not differ under both conditions between the two mouse strains. Similar results were obtained with [11C]erlotinib. CONCLUSIONS Despite a reduction in the abundance of cerebral ABCG2 and ABCB1 in APP/PS1-21 mice, the brain distribution of two dual ABCB1/ABCG2 substrates was unaltered. Our results suggest that the brain distribution of clinically used ABCB1/ABCG2 substrate drugs may not differ between AD patients and healthy people.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- ATP Binding Cassette Transporter, Subfamily G, Member 2/genetics
- ATP Binding Cassette Transporter, Subfamily G, Member 2/metabolism
- Amyloid beta-Peptides/metabolism
- Amyloid beta-Peptides/toxicity
- Amyloidosis/diagnostic imaging
- Amyloidosis/metabolism
- Amyloidosis/pathology
- Animals
- Blood-Brain Barrier/metabolism
- Brain/diagnostic imaging
- Brain/metabolism
- Disease Models, Animal
- Female
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Positron-Emission Tomography
- Quinolines/pharmacokinetics
- Tissue Distribution
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Affiliation(s)
- Thomas Wanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (V.Z.); (S.M.); (T.F.); (M.S.); (J.S.); (O.L.)
| | - Viktoria Zoufal
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (V.Z.); (S.M.); (T.F.); (M.S.); (J.S.); (O.L.)
| | - Mirjam Brackhan
- Department of Neuro-/Pathology, University of Oslo (UiO) and Oslo University Hospital (OUS), 0424 Oslo, Norway; (M.B.); (M.K.); (J.P.)
| | - Markus Krohn
- Department of Neuro-/Pathology, University of Oslo (UiO) and Oslo University Hospital (OUS), 0424 Oslo, Norway; (M.B.); (M.K.); (J.P.)
| | - Severin Mairinger
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (V.Z.); (S.M.); (T.F.); (M.S.); (J.S.); (O.L.)
| | - Thomas Filip
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (V.Z.); (S.M.); (T.F.); (M.S.); (J.S.); (O.L.)
| | - Michael Sauberer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (V.Z.); (S.M.); (T.F.); (M.S.); (J.S.); (O.L.)
| | - Johann Stanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (V.Z.); (S.M.); (T.F.); (M.S.); (J.S.); (O.L.)
| | - Thomas Pekar
- Biomedical Analytics, University of Applied Sciences Wiener Neustadt, 2700 Wiener Neustadt, Austria;
| | - Jens Pahnke
- Department of Neuro-/Pathology, University of Oslo (UiO) and Oslo University Hospital (OUS), 0424 Oslo, Norway; (M.B.); (M.K.); (J.P.)
- LIED, University of Lübeck, 23562 Lübeck, Germany
- Department of Pharmacology, Faculty of Medicine, University of Latvia, 1586 Rīga, Latvia
| | - Oliver Langer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, 2444 Seibersdorf, Austria; (V.Z.); (S.M.); (T.F.); (M.S.); (J.S.); (O.L.)
- Department of Clinical Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
- Department of Biomedical Imaging und Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, 1090 Vienna, Austria
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Bauer M, Bamminger K, Pichler V, Weber M, Binder S, Maier-Salamon A, Tahir A, Jäger W, Haslacher H, Tournier N, Hacker M, Zeitlinger M, Langer O. Impaired Clearance From the Brain Increases the Brain Exposure to Metoclopramide in Elderly Subjects. Clin Pharmacol Ther 2020; 109:754-761. [PMID: 32966590 PMCID: PMC7983943 DOI: 10.1002/cpt.2052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/08/2020] [Indexed: 12/26/2022]
Abstract
The antiemetic and gastroprokinetic drug metoclopramide is a weak substrate of the blood‐brain barrier (BBB) efflux transporter P‐gp and displays central nervous system (CNS) side effects (i.e., extrapyramidal symptoms and tardive dyskinesia) caused by dopamine D2 receptor blockade in the basal ganglia. These side effects occur with a higher incidence in elderly people. We used positron emission tomography to assess the brain distribution of [11C]metoclopramide in young (n = 11, 26 ± 3 years) and elderly (n = 7, 68 ± 9 years) healthy men both after administration of a microdose (9 ± 7 µg) and a microdose co‐injected with a therapeutic dose of unlabeled metoclopramide (10 mg). For both doses, elderly subjects had a significantly higher total volume of distribution (VT) of [11C]metoclopramide in the basal ganglia than young subjects (microdose: +26%, therapeutic dose: +41%). Increases in VT (= K1/k2) were caused by significant decreases in the transfer rate constant of [11C]metoclopramide from brain into plasma (k2, microdose: −18%, therapeutic dose: −30%), whereas the distributional clearance from plasma into brain (K1) remained unaltered. This reduction in the clearance of [11C]metoclopramide (k2) from the brains of elderly subjects may be caused by an age‐related decrease in the activity of P‐gp at the BBB and may contribute to the higher incidence of CNS side effects of metoclopramide in the aged population. Our data suggest that an age‐associated decrease in the clearance properties of the BBB may modulate the CNS effects or side effects of clinically used P‐gp substrates.
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Affiliation(s)
- Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Karsten Bamminger
- Department of Biomedical Imaging and Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Verena Pichler
- Department of Biomedical Imaging and Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Maria Weber
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Simon Binder
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | | | - Ammar Tahir
- Department of Pharmacognosy, University of Vienna, Vienna, Austria
| | - Walter Jäger
- Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria
| | - Helmuth Haslacher
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Nicolas Tournier
- Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Université Paris-Saclay, Orsay, France
| | - Marcus Hacker
- Department of Biomedical Imaging and Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Department of Biomedical Imaging and Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria.,Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
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29
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Selo MA, Delmas AS, Springer L, Zoufal V, Sake JA, Clerkin CG, Huwer H, Schneider-Daum N, Lehr CM, Nickel S, Langer O, Ehrhardt C. Tobacco Smoke and Inhaled Drugs Alter Expression and Activity of Multidrug Resistance-Associated Protein-1 (MRP1) in Human Distal Lung Epithelial Cells in vitro. Front Bioeng Biotechnol 2020; 8:1030. [PMID: 33015009 PMCID: PMC7505930 DOI: 10.3389/fbioe.2020.01030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 08/06/2020] [Indexed: 12/31/2022] Open
Abstract
Multidrug resistance-associated protein-1 (MRP1/ABCC1) is highly expressed in human lung tissues. Recent studies suggest that it significantly affects the pulmonary disposition of its substrates, both after pulmonary and systemic administration. To better understand the molecular mechanisms involved, we studied the expression, subcellular localization and activity of MRP1 in freshly isolated human alveolar epithelial type 2 (AT2) and type 1-like (AT1-like) cells in primary culture, and in the NCI-H441 cell line. Moreover, the effect of cigarette smoke extract (CSE) and a series of inhaled drugs on MRP1 abundance and activity was investigated in vitro. MRP1 expression levels were measured by q-PCR and immunoblot in AT2 and AT1-like cells from different donors and in several passages of the NCI-H441 cell line. The subcellular localization of the transporter was studied by confocal laser scanning microscopy and cell surface protein biotinylation. MRP1 activity was assessed by bidirectional transport and efflux experiments using the MRP1 substrate, 5(6)-carboxyfluorescein [CF; formed intracellularly from 5(6)-carboxyfluorescein-diacetate (CFDA)] in AT1-like and NCI-H441 cell monolayers. Furthermore, the effect of CSE as well as several bronchodilators and inhaled corticosteroids on MRP1 abundance and CF efflux was investigated. MRP1 protein abundance increased upon differentiation from AT2 to AT1-like phenotype, however, ABCC1 gene levels remained unchanged. MRP1 abundance in NCI-H441 cells were comparable to those found in AT1-like cells. The transporter was detected primarily in basolateral membranes of both cell types which was consistent with net basolateral efflux of CF. Likewise, bidirectional transport studies showed net apical-to-basolateral transport of CF which was sensitive to the MRP1 inhibitor MK-571. Budesonide, beclomethasone dipropionate, salbutamol sulfate, and CSE decreased CF efflux in a concentration-dependent manner. Interestingly, CSE increased MRP1 abundance, whereas budesonide, beclomethasone dipropionate, salbutamol sulfate did not have such effect. CSE and inhaled drugs can reduce MRP1 activity in vitro, which implies the transporter being a potential drug target in the treatment of chronic obstructive pulmonary disease (COPD). Moreover, MRP1 expression level, localization and activity were comparable in human AT1-like and NCI-H441 cells. Therefore, the cell line can be a useful alternative in vitro model to study MRP1 in distal lung epithelium.
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Affiliation(s)
- Mohammed Ali Selo
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,Faculty of Pharmacy, University of Kufa, Al-Najaf, Iraq
| | - Anne-Sophie Delmas
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Lisa Springer
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Viktoria Zoufal
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Johannes A Sake
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Caoimhe G Clerkin
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Hanno Huwer
- Department of Cardiothoracic Surgery, Völklingen Heart Centre, Völklingen, Germany
| | - Nicole Schneider-Daum
- Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Centre for Infection Research, Saarbrücken, Germany
| | - Claus-Michael Lehr
- Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Centre for Infection Research, Saarbrücken, Germany.,Department of Pharmacy, Saarland University, Saarbrücken, Germany
| | - Sabrina Nickel
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Oliver Langer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.,Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Carsten Ehrhardt
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
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Burt T, Young G, Lee W, Kusuhara H, Langer O, Rowland M, Sugiyama Y. Phase 0/microdosing approaches: time for mainstream application in drug development? Nat Rev Drug Discov 2020; 19:801-818. [PMID: 32901140 DOI: 10.1038/s41573-020-0080-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2020] [Indexed: 12/13/2022]
Abstract
Phase 0 approaches - which include microdosing - evaluate subtherapeutic exposures of new drugs in first-in-human studies known as exploratory clinical trials. Recent progress extends phase 0 benefits beyond assessment of pharmacokinetics to include understanding of mechanism of action and pharmacodynamics. Phase 0 approaches have the potential to improve preclinical candidate selection and enable safer, cheaper, quicker and more informed developmental decisions. Here, we discuss phase 0 methods and applications, highlight their advantages over traditional strategies and address concerns related to extrapolation and developmental timelines. Although challenges remain, we propose that phase 0 approaches be at least considered for application in most drug development scenarios.
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Affiliation(s)
- Tal Burt
- Burt Consultancy LLC. talburtmd.com, New York, NY, USA. .,Phase-0/Microdosing Network. Phase-0Microdosing.org, New York, NY, USA.
| | - Graeme Young
- GlaxoSmithKline Research and Development Ltd, Ware, UK
| | - Wooin Lee
- Seoul National University, Seoul, Republic of Korea
| | | | - Oliver Langer
- Medical University of Vienna, Vienna, Austria.,AIT Austrian Institute of Technology GmbH, Vienna, Austria
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31
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Zoufal V, Mairinger S, Brackhan M, Krohn M, Filip T, Sauberer M, Stanek J, Wanek T, Tournier N, Bauer M, Pahnke J, Langer O. Imaging P-Glycoprotein Induction at the Blood-Brain Barrier of a β-Amyloidosis Mouse Model with 11C-Metoclopramide PET. J Nucl Med 2020; 61:1050-1057. [PMID: 31806767 PMCID: PMC7383073 DOI: 10.2967/jnumed.119.237198] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 11/18/2019] [Indexed: 01/30/2023] Open
Abstract
P-glycoprotein (ABC subfamily B member 1, ABCB1) plays an important role at the blood-brain barrier (BBB) in promoting clearance of neurotoxic β-amyloid (Aβ) peptides from the brain into the blood. ABCB1 expression and activity were found to be decreased in the brains of Alzheimer disease patients. Treatment with drugs that induce cerebral ABCB1 activity may be a promising approach to delay the build-up of Aβ deposits in the brain by enhancing clearance of Aβ peptides from the brain. The aim of this study was to investigate whether PET with the weak ABCB1 substrate radiotracer 11C-metoclopramide can measure ABCB1 induction at the BBB in a β-amyloidosis mouse model (APP/PS1-21 mice) and in wild-type mice. Methods: Groups of wild-type and APP/PS1-21 mice aged 50 or 170 d underwent 11C-metoclopramide baseline PET scans or scans after intraperitoneal treatment with the rodent pregnane X receptor activator 5-pregnen-3β-ol-20-one-16α-carbonitrile (PCN, 25 mg/kg) or its vehicle over 7 d. At the end of the PET scans, brains were harvested for immunohistochemical analysis of ABCB1 and Aβ levels. In separate groups of mice, radiolabeled metabolites of 11C-metoclopramide were determined in plasma and brain at 15 min after radiotracer injection. As an outcome parameter of cerebral ABCB1 activity, the elimination slope of radioactivity washout from the brain (kE,brain) was calculated. Results: PCN treatment resulted in an increased clearance of radioactivity from the brain as reflected by significant increases in kE,brain (from +26% to +54% relative to baseline). Immunohistochemical analysis confirmed ABCB1 induction in the brains of PCN-treated APP/PS1-21 mice with a concomitant decrease in Aβ levels. There was a significant positive correlation between kE,brain and ABCB1 levels in the brain. In wild-type mice, a significant age-related decrease in kE,brain was found. Metabolite analysis showed that most radioactivity in the brain comprised unmetabolized 11C-metoclopramide in all animal groups. Conclusion:11C-metoclopramide can measure ABCB1 induction in the mouse brain without the need to consider an arterial input function and may find potential application in Alzheimer disease patients to noninvasively evaluate strategies to enhance the clearance properties of the BBB.
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Affiliation(s)
- Viktoria Zoufal
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Severin Mairinger
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Mirjam Brackhan
- Department of Neuro-/Pathology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Markus Krohn
- Department of Neuro-/Pathology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Thomas Filip
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Michael Sauberer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Johann Stanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Thomas Wanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Nicolas Tournier
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, INSERM, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Jens Pahnke
- Department of Neuro-/Pathology, University of Oslo and Oslo University Hospital, Oslo, Norway
- LIED, University of Lübeck, Lübeck, Germany
- Leibniz-Institute of Plant Biochemistry, Halle, Germany
- Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia; and
| | - Oliver Langer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Division of Nuclear Medicine, Department of Biomedical Imaging und Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
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32
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Zoufal V, Mairinger S, Krohn M, Wanek T, Filip T, Sauberer M, Stanek J, Kuntner C, Pahnke J, Langer O. Measurement of cerebral ABCC1 transport activity in wild-type and APP/PS1-21 mice with positron emission tomography. J Cereb Blood Flow Metab 2020; 40:954-965. [PMID: 31195936 PMCID: PMC7181082 DOI: 10.1177/0271678x19854541] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/17/2019] [Accepted: 05/05/2019] [Indexed: 12/11/2022]
Abstract
Previous data suggest a possible link between multidrug resistance-associated protein 1 (ABCC1) and brain clearance of beta-amyloid (Aβ). We used PET with 6-bromo-7-[11C]methylpurine ([11C]BMP) to measure cerebral ABCC1 transport activity in a beta-amyloidosis mouse model (APP/PS1-21) and in wild-type mice aged 50 and 170 days, without and with pretreatment with the ABCC1 inhibitor MK571. One hundred seventy days-old-animals additionally underwent [11C]PiB PET scans to measure Aβ load. While baseline [11C]BMP PET scans detected no differences in the elimination slope of radioactivity washout from the brain (kelim) between APP/PS1-21 and wild-type mice of both age groups, PET scans after MK571 pretreatment revealed significantly higher kelim values in APP/PS1-21 mice than in wild-type mice aged 170 days, suggesting increased ABCC1 activity. The observed increase in kelim occurred across all investigated brain regions and was independent of the presence of Aβ plaques measured with [11C]PiB. Western blot analysis revealed a trend towards increased whole brain ABCC1 levels in 170 days-old-APP/PS1-21 mice versus wild-type mice and a significant positive correlation between ABCC1 levels and kelim. Our data point to an upregulation of ABCC1 in APP/PS1-21 mice, which may be related to an induction of ABCC1 in astrocytes as a protective mechanism against oxidative stress.
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Affiliation(s)
- Viktoria Zoufal
- Preclinical Molecular Imaging, AIT
Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Severin Mairinger
- Preclinical Molecular Imaging, AIT
Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Markus Krohn
- Department of Neuro/Pathology,
University of Oslo (UiO) and Oslo University Hospital (OUS), Oslo, Norway
- University of Lübeck Institute for
Experimental und Clinical Pharmacology and Toxicology Center of Brain, Behavior and
Metabolism (CBBM), Lübeck, Germany
| | - Thomas Wanek
- Preclinical Molecular Imaging, AIT
Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Thomas Filip
- Preclinical Molecular Imaging, AIT
Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Michael Sauberer
- Preclinical Molecular Imaging, AIT
Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Johann Stanek
- Preclinical Molecular Imaging, AIT
Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Claudia Kuntner
- Preclinical Molecular Imaging, AIT
Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Jens Pahnke
- Department of Neuro/Pathology,
University of Oslo (UiO) and Oslo University Hospital (OUS), Oslo, Norway
- LIED, University of Lübeck,
Germany
- Leibniz-Institute of Plant Biochemistry,
Halle, Germany
- Medical Faculty, Department of
Pharmacology, University of Latvia, Rīga, Latvia
| | - Oliver Langer
- Preclinical Molecular Imaging, AIT
Austrian Institute of Technology GmbH, Seibersdorf, Austria
- Department of Clinical Pharmacology,
Medical University of Vienna, Vienna, Austria
- Department of Biomedical Imaging und
Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna,
Vienna, Austria
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33
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Mairinger S, Sake JA, Lozano IH, Filip T, Sauberer M, Stanek J, Wanek T, Ehrhardt C, Langer O. Assessing the Activity of Multidrug Resistance–Associated Protein 1 at the Lung Epithelial Barrier. J Nucl Med 2020; 61:1650-1657. [DOI: 10.2967/jnumed.120.244038] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 03/19/2020] [Indexed: 01/26/2023] Open
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Bauer M, Zeitlinger M, Langer O. Pharmacokinetic Imaging with Radiolabeled Molecularly Targeted Anticancer Drugs. J Nucl Med 2020; 61:306. [PMID: 31586005 PMCID: PMC8801952 DOI: 10.2967/jnumed.119.236174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Martin Bauer
- Medical University of Vienna Währinger-Gürtel 18-20 Vienna, Austria 1090 E-mail:
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35
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Abstract
Introduction: Membrane transporters of the SLC and ABC families are abundantly expressed in the liver, where they control the transfer of drugs/drug metabolites across the sinusoidal and canalicular hepatocyte membranes and play a pivotal role in hepatic drug clearance. Noninvasive imaging methods, such as PET, SPECT or MRI, allow for measuring the activity of hepatic transporters in vivo, provided that suitable transporter imaging probes are available.Areas covered: We give an overview of the working principles of imaging-based assessment of hepatic transporter activity. We discuss different currently available PET/SPECT radiotracers and MRI contrast agents and their applications to measure hepatic transporter activity in health and disease. We cover mathematical modeling approaches to obtain quantitative parameters of transporter activity and provide a critical assessment of methodological limitations and challenges associated with this approach.Expert opinion: PET in combination with pharmacokinetic modeling can be potentially applied in drug development to study the distribution of new drug candidates to the liver and their clearance mechanisms. This approach bears potential to mechanistically assess transporter-mediated drug-drug interactions, to assess the influence of disease on hepatic drug disposition and to validate and refine currently available in vitro-in vivo extrapolation methods to predict hepatic clearance of drugs.
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Affiliation(s)
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
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Zoufal V, Wanek T, Krohn M, Mairinger S, Filip T, Sauberer M, Stanek J, Pekar T, Bauer M, Pahnke J, Langer O. Age dependency of cerebral P-glycoprotein function in wild-type and APPPS1 mice measured with PET. J Cereb Blood Flow Metab 2020; 40:150-162. [PMID: 30354871 PMCID: PMC6928546 DOI: 10.1177/0271678x18806640] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
P-glycoprotein (P-gp, ABCB1) is an efflux transporter at the blood-brain barrier (BBB), which mediates clearance of beta-amyloid (Aβ) from brain into blood. We used (R)-[11C]verapamil PET in combination with partial P-gp inhibition with tariquidar to measure cerebral P-gp function in a beta-amyloidosis mouse model (APPtg) and in control mice at three different ages (50, 200 and 380 days). Following tariquidar pre-treatment (4 mg/kg), whole brain-to-plasma radioactivity concentration ratios (Kp,brain) were significantly higher in APPtg than in wild-type mice aged 50 days, pointing to decreased cerebral P-gp function. Moreover, we found an age-dependent decrease in cerebral P-gp function in both wild-type and APPtg mice of up to -50%. Alterations in P-gp function were more pronounced in Aβ-rich brain regions (hippocampus, cortex) than in a control region with negligible Aβ load (cerebellum). PET results were confirmed by immunohistochemical staining of P-gp in brain microvessels. Our results confirm previous findings of reduced P-gp function in Alzheimer's disease mouse models and show that our PET protocol possesses adequate sensitivity to measure these functional changes in vivo. Our PET protocol may find use in clinical studies to test the efficacy of drugs to induce P-gp function at the human BBB to enhance Aβ clearance.
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Affiliation(s)
- Viktoria Zoufal
- Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Thomas Wanek
- Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Markus Krohn
- Department of Neuro/Pathology, University of Oslo (UiO) and Oslo University Hospital (OUS), Oslo, Norway
| | - Severin Mairinger
- Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Thomas Filip
- Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Michael Sauberer
- Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Johann Stanek
- Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Thomas Pekar
- University of Applied Sciences, Wiener Neustadt, Austria
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Jens Pahnke
- Department of Neuro/Pathology, University of Oslo (UiO) and Oslo University Hospital (OUS), Oslo, Norway.,LIED, University of Lübeck, Lübeck, Germany.,Leibniz-Institute of Plant Biochemistry, Halle, Germany.,Department of Pharmacology, University of Latvia, Rīga, Latvia
| | - Oliver Langer
- Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.,Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Department of Biomedical Imaging und Image-Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
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Pichler V, Ozenil M, Bamminger K, Vraka C, Hacker M, Langer O, Wadsak W. Pitfalls and solutions of the fully-automated radiosynthesis of [ 11C]metoclopramide. EJNMMI Radiopharm Chem 2019; 4:31. [PMID: 31853677 PMCID: PMC6920278 DOI: 10.1186/s41181-019-0083-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/04/2019] [Indexed: 12/14/2022] Open
Abstract
Background [11C]Metoclopramide is a new radiotracer for investigating the activity of P-glycoprotein at the blood-brain barrier. A highly stable and reproducible radiosynthesis is a prerequisite for clinical studies applying [11C]metoclopramide or other 11C-labelled radiotracers, therefore all potential pitfalls must be identified and monitored to allow a stable process. Results Long-term production (n = 94 in a time range of approximately 2 years) of [11C]metoclopramide synthesized on two commercially available synthesizers yielded 3.9 ± 2.0 GBq of product with a molar activity of 132 ± 164 GBq/μmol and an overall success rate of 93%. During all successful productions, the product quality was in accordance with the recommendations of the European Pharmacopoeia. The most common pitfalls that were identified for the radiosynthesis included poor turnover into [11C]CH3OTf, decomposition of the solvent or insufficient semi-preparative HPLC performance. Conclusion The study provides long-term insight in the improved, robust and stable preparation of [11C]metoclopramide for human use.
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Affiliation(s)
- Verena Pichler
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.
| | - Marius Ozenil
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Karsten Bamminger
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.,Center for Biomarker Research in Medicine, CBmed GmbH, Graz, Austria
| | - Chrysoula Vraka
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Marcus Hacker
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.,Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.,Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Wolfgang Wadsak
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.,Center for Biomarker Research in Medicine, CBmed GmbH, Graz, Austria
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Hernández Lozano I, Bauer M, Wulkersdorfer B, Traxl A, Philippe C, Weber M, Häusler S, Stieger B, Jäger W, Mairinger S, Wanek T, Hacker M, Zeitlinger M, Langer O. Measurement of Hepatic ABCB1 and ABCG2 Transport Activity with [ 11C]Tariquidar and PET in Humans and Mice. Mol Pharm 2019; 17:316-326. [PMID: 31790256 DOI: 10.1021/acs.molpharmaceut.9b01060] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
P-Glycoprotein (ABCB1) and breast cancer resistance protein (ABCG2) in the canalicular membrane of hepatocytes mediate the biliary excretion of drugs and drug metabolites. To measure hepatic ABCB1 and ABCG2 activity, we performed positron emission tomography (PET) scans with the ABCB1/ABCG2 substrate [11C]tariquidar in healthy volunteers and wild-type, Abcb1a/b(-/-), Abcg2(-/-), and Abcb1a/b(-/-)Abcg2(-/-) mice without and with coadministration of unlabeled tariquidar. PET data were analyzed with a three-compartment pharmacokinetic model. [11C]Tariquidar underwent hepatobiliary excretion in both humans and mice, and tariquidar coadministration caused a significant reduction in the rate constant for the transfer of radioactivity from the liver into bile (by -74% in humans and by -62% in wild-type mice), suggesting inhibition of canalicular efflux transporter activity. Radio-thin-layer chromatography analysis revealed that the majority of radioactivity (>87%) in the mouse liver and bile was composed of unmetabolized [11C]tariquidar. PET data in transporter knockout mice revealed that both ABCB1 and ABCG2 mediated biliary excretion of [11C]tariquidar. In vitro experiments indicated that tariquidar is not a substrate of major hepatic basolateral uptake transporters (SLCO1B1, SLCO1B3, SLCO2B1, SLC22A1, and SLC22A3). Our data suggest that [11C]tariquidar can be used to measure hepatic canalicular ABCB1/ABCG2 transport activity without a confounding effect of uptake transporters.
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Affiliation(s)
- Irene Hernández Lozano
- Department of Clinical Pharmacology , Medical University of Vienna , Vienna 1090 , Austria
| | - Martin Bauer
- Department of Clinical Pharmacology , Medical University of Vienna , Vienna 1090 , Austria
| | - Beatrix Wulkersdorfer
- Department of Clinical Pharmacology , Medical University of Vienna , Vienna 1090 , Austria
| | - Alexander Traxl
- Preclinical Molecular Imaging , AIT Austrian Institute of Technology GmbH , Seibersdorf 2444 , Austria
| | - Cécile Philippe
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy , Medical University of Vienna , Vienna 1090 , Austria
| | - Maria Weber
- Department of Clinical Pharmacology , Medical University of Vienna , Vienna 1090 , Austria
| | - Stephanie Häusler
- Department of Clinical Pharmacology and Toxicology , University Hospital Zurich, University of Zurich , Zurich 8006 , Switzerland
| | - Bruno Stieger
- Department of Clinical Pharmacology and Toxicology , University Hospital Zurich, University of Zurich , Zurich 8006 , Switzerland
| | - Walter Jäger
- Department of Clinical Pharmacy and Diagnostics , University of Vienna , Vienna 1090 , Austria
| | - Severin Mairinger
- Preclinical Molecular Imaging , AIT Austrian Institute of Technology GmbH , Seibersdorf 2444 , Austria
| | - Thomas Wanek
- Preclinical Molecular Imaging , AIT Austrian Institute of Technology GmbH , Seibersdorf 2444 , Austria
| | - Marcus Hacker
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy , Medical University of Vienna , Vienna 1090 , Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology , Medical University of Vienna , Vienna 1090 , Austria
| | - Oliver Langer
- Department of Clinical Pharmacology , Medical University of Vienna , Vienna 1090 , Austria.,Preclinical Molecular Imaging , AIT Austrian Institute of Technology GmbH , Seibersdorf 2444 , Austria.,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy , Medical University of Vienna , Vienna 1090 , Austria
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Wulkersdorfer B, Bauer M, Karch R, Stefanits H, Philippe C, Weber M, Czech T, Menet MC, Declèves X, Hainfellner JA, Preusser M, Hacker M, Zeitlinger M, Müller M, Langer O. Assessment of brain delivery of a model ABCB1/ABCG2 substrate in patients with non-contrast-enhancing brain tumors with positron emission tomography. EJNMMI Res 2019; 9:110. [PMID: 31832814 PMCID: PMC6908538 DOI: 10.1186/s13550-019-0581-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 12/04/2019] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND P-glycoprotein (ABCB1) and breast cancer resistance protein (ABCG2) are two efflux transporters expressed at the blood-brain barrier which effectively restrict the brain distribution of the majority of currently known anticancer drugs. High-grade brain tumors often possess a disrupted blood-brain tumor barrier (BBTB) leading to enhanced accumulation of magnetic resonance imaging contrast agents, and possibly anticancer drugs, as compared to normal brain. In contrast to high-grade brain tumors, considerably less information is available with respect to BBTB integrity in lower grade brain tumors. MATERIALS AND METHODS We performed positron emission tomography imaging with the radiolabeled ABCB1 inhibitor [11C]tariquidar, a prototypical ABCB1/ABCG2 substrate, in seven patients with non-contrast -enhancing brain tumors (WHO grades I-III). In addition, ABCB1 and ABCG2 levels were determined in surgically resected tumor tissue of four patients using quantitative targeted absolute proteomics. RESULTS Brain distribution of [11C]tariquidar was found to be very low across the whole brain and not significantly different between tumor and tumor-free brain tissue. Only one patient showed a small area of enhanced [11C]tariquidar uptake within the brain tumor. ABCG2/ABCB1 ratios in surgically resected tumor tissue (1.4 ± 0.2) were comparable to previously reported ABCG2/ABCB1 ratios in isolated human micro-vessels (1.3), which suggested that no overexpression of ABCB1 or ABCG2 occurred in the investigated tumors. CONCLUSIONS Our data suggest that the investigated brain tumors had an intact BBTB, which is impermeable to anticancer drugs, which are dual ABCB1/ABCG2 substrates. Therefore, effective drugs for antitumor treatment should have high passive permeability and lack ABCB1/ABCG2 substrate affinity. TRIAL REGISTRATION European Union Drug Regulating Authorities Clinical Trials Database (EUDRACT), 2011-004189-13. Registered on 23 February 2012, https://www.clinicaltrialsregister.eu/ctr-search/search?query=2011-004189-13.
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Affiliation(s)
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Rudolf Karch
- Centre for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Harald Stefanits
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Cécile Philippe
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Maria Weber
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Thomas Czech
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Marie-Claude Menet
- Inserm, U1144, Paris, France.,Université Paris Descartes, UMR-S 1144, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Xavier Declèves
- Inserm, U1144, Paris, France.,Université Paris Descartes, UMR-S 1144, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | | | - Matthias Preusser
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Marcus Hacker
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Markus Müller
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria. .,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria. .,Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.
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40
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Kannan P, Füredi A, Dizdarevic S, Wanek T, Mairinger S, Collins J, Falls T, van Dam RM, Maheshwari D, Lee JT, Szakács G, Langer O. In vivo characterization of [ 18F]AVT-011 as a radiotracer for PET imaging of multidrug resistance. Eur J Nucl Med Mol Imaging 2019; 47:2026-2035. [PMID: 31729540 PMCID: PMC7299908 DOI: 10.1007/s00259-019-04589-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 10/22/2019] [Indexed: 11/30/2022]
Abstract
Purpose Multidrug resistance (MDR) impedes cancer treatment. Two efflux transporters from the ATP-binding cassette (ABC) family, ABCB1 and ABCG2, may contribute to MDR by restricting the entry of therapeutic drugs into tumor cells. Although a higher expression of these transporters has been correlated with an unfavorable response to chemotherapy, transporter expression does not necessarily correlate with function. In this study, we characterized the pharmacological properties of [18F]AVT-011, a new PET radiotracer for imaging transporter-mediated MDR in tumors. Methods AVT-011 was radiolabeled with 18F and evaluated with PET imaging in preclinical models. Transport of [18F]AVT-011 by ABCB1 and/or ABCG2 was assessed by measuring its uptake in the brains of wild-type, Abcb1a/b−/−, and Abcg2−/− mice at baseline and after administration of the ABCB1 inhibitor tariquidar (n = 5/group). Metabolism and biodistribution of [18F]AVT-011 were also measured. To measure ABCB1 function in tumors, we performed PET experiments using both [18F]AVT-011 and [18F]FDG in mice bearing orthotopic breast tumors (n = 7–10/group) expressing clinically relevant levels of ABCB1. Results At baseline, brain uptake was highest in Abcb1a/b−/− mice. After tariquidar administration, brain uptake increased 3-fold and 8-fold in wild-type and Abcg2−/− mice, respectively, but did not increase further in Abcb1a/b−/− mice. At 30 min after injection, the radiotracer was > 90% in its parent form and had highest uptake in organs of the hepatobiliary system. Compared with that in drug-sensitive tumors, uptake of [18F]AVT-011 was 32% lower in doxorubicin-resistant tumors with highest ABCB1 expression and increased by 40% with tariquidar administration. Tumor uptake of [18F]FDG did not significantly differ among groups. Conclusion [18F]AVT-011 is a dual ABCB1/ABCG2 substrate radiotracer that can quantify transporter function at the blood-brain barrier and in ABCB1-expressing tumors, making it potentially suitable for clinical imaging of ABCB1-mediated MDR in tumors. Electronic supplementary material The online version of this article (10.1007/s00259-019-04589-w) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pavitra Kannan
- CRUK and MRC Oxford Institute for Radiation Oncology, University of Oxford, Oxford, UK. .,Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.
| | - András Füredi
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary.,Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Sabina Dizdarevic
- Brighton and Sussex University Hospitals, NHS Trust and Brighton and Sussex Medical School, Brighton, UK
| | - Thomas Wanek
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Severin Mairinger
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Jeffrey Collins
- Crump Institute for Molecular Imaging and Department of Molecular & Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Theresa Falls
- Crump Institute for Molecular Imaging and Department of Molecular & Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - R Michael van Dam
- Crump Institute for Molecular Imaging and Department of Molecular & Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.,Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | | | - Jason T Lee
- Crump Institute for Molecular Imaging and Department of Molecular & Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.,Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.,Stanford Center for Innovations in In vivo Imaging, Stanford University School of Medicine, Stanford, CA, USA
| | - Gergely Szakács
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary.,Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.,Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Department of Biomedical Imaging und Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
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41
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Roux GL, Jarray R, Guyot AC, Pavoni S, Costa N, Théodoro F, Nassor F, Pruvost A, Tournier N, Kiyan Y, Langer O, Yates F, Deslys JP, Mabondzo A. Proof-of-Concept Study of Drug Brain Permeability Between in Vivo Human Brain and an in Vitro iPSCs-Human Blood-Brain Barrier Model. Sci Rep 2019; 9:16310. [PMID: 31690750 PMCID: PMC6831611 DOI: 10.1038/s41598-019-52213-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 10/10/2019] [Indexed: 12/22/2022] Open
Abstract
The development of effective central nervous system (CNS) drugs has been hampered by the lack of robust strategies to mimic the blood-brain barrier (BBB) and cerebrovascular impairments in vitro. Recent technological advancements in BBB modeling using induced pluripotent stem cells (iPSCs) allowed to overcome some of these obstacles, nonetheless the pertinence for their use in drug permeation study remains to be established. This mandatory information requires a cross comparison of in vitro and in vivo pharmacokinetic data in the same species to avoid failure in late clinical drug development. Here, we measured the BBB permeabilities of 8 clinical positron emission tomography (PET) radioligands with known pharmacokinetic parameters in human brain in vivo with a newly developed in vitro iPSC-based human BBB (iPSC-hBBB) model. Our findings showed a good correlation between in vitro and in vivo drug brain permeability (R2 = 0.83; P = 0.008) which contrasted with the limited correlation between in vitro apparent permeability for a set of 18 CNS/non-CNS compounds using the in vitro iPSCs-hBBB model and drug physicochemical properties. Our data suggest that the iPSC-hBBB model can be integrated in a flow scheme of CNS drug screening and potentially used to study species differences in BBB permeation.
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Affiliation(s)
- Gwenaëlle Le Roux
- Service de Pharmacologie et d'Immunoanalyse, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France
| | - Rafika Jarray
- Service d'Etude des Prions et des Infections Atypiques, CEA, F-92265, Fontenay-aux-Roses, France.,Sup'Biotech, F-94800, Villejuif, France
| | - Anne-Cécile Guyot
- Service de Pharmacologie et d'Immunoanalyse, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France
| | - Serena Pavoni
- Service d'Etude des Prions et des Infections Atypiques, CEA, F-92265, Fontenay-aux-Roses, France
| | - Narciso Costa
- Service de Pharmacologie et d'Immunoanalyse, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France
| | - Frédéric Théodoro
- Service de Pharmacologie et d'Immunoanalyse (SPI), Plateforme Smart-MS, CEA, INRA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France
| | - Ferid Nassor
- Service d'Etude des Prions et des Infections Atypiques, CEA, F-92265, Fontenay-aux-Roses, France.,Sup'Biotech, F-94800, Villejuif, France
| | - Alain Pruvost
- Service de Pharmacologie et d'Immunoanalyse (SPI), Plateforme Smart-MS, CEA, INRA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France
| | - Nicolas Tournier
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, Inserm, Univ. Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Yulia Kiyan
- Medizinische Hochschule Hannover, DE-30625, Hannover, Germany
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, A-1090, Vienna, Austria.,Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, A-2444, Seibersdorf, Austria
| | - Frank Yates
- Service d'Etude des Prions et des Infections Atypiques, CEA, F-92265, Fontenay-aux-Roses, France.,Sup'Biotech, F-94800, Villejuif, France
| | - Jean Philippe Deslys
- Service d'Etude des Prions et des Infections Atypiques, CEA, F-92265, Fontenay-aux-Roses, France
| | - Aloïse Mabondzo
- Service de Pharmacologie et d'Immunoanalyse, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France.
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Linder M, Glitzner E, Srivatsa S, Bakiri L, Matsuoka K, Shahrouzi P, Dumanic M, Novoszel P, Mohr T, Langer O, Wanek T, Mitterhauser M, Wagner EF, Sibilia M. EGFR is required for FOS-dependent bone tumor development via RSK2/CREB signaling. EMBO Mol Med 2019; 10:emmm.201809408. [PMID: 30361264 PMCID: PMC6220323 DOI: 10.15252/emmm.201809408] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Osteosarcoma (OS) is a rare tumor of the bone occurring mainly in young adults accounting for 5% of all childhood cancers. Because of the limited therapeutic options, there has been no survival improvement for OS patients in the past 40 years. The epidermal growth factor receptor (EGFR) is highly expressed in OS; however, its clinical relevance is unclear. Here, we employed an autochthonous c‐Fos‐dependent OS mouse model (H2‐c‐fosLTR) and human OS tumor biopsies for preclinical studies aimed at identifying novel biomarkers and therapeutic benefits of anti‐EGFR therapies. We show that EGFR deletion/inhibition results in reduced tumor formation in H2‐c‐fosLTR mice by directly inhibiting the proliferation of cancer‐initiating osteoblastic cells by a mechanism involving RSK2/CREB‐dependent c‐Fos expression. Furthermore, OS patients with co‐expression of EGFR and c‐Fos exhibit reduced overall survival. Preclinical studies using human OS xenografts revealed that only tumors expressing both EGFR and c‐Fos responded to anti‐EGFR therapy demonstrating that c‐Fos can be considered as a novel biomarker predicting response to anti‐EGFR treatment in OS patients.
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Affiliation(s)
- Markus Linder
- Department of Medicine I, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Elisabeth Glitzner
- Department of Medicine I, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Sriram Srivatsa
- Department of Medicine I, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Latifa Bakiri
- Spanish National Cancer Research Center (CNIO), Madrid, Spain
| | | | - Parastoo Shahrouzi
- Department of Medicine I, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Monika Dumanic
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Philipp Novoszel
- Department of Medicine I, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Thomas Mohr
- Department of Medicine I, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.,Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Thomas Wanek
- Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Markus Mitterhauser
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.,LBI Applied Diagnostics, Vienna, Austria
| | - Erwin F Wagner
- Spanish National Cancer Research Center (CNIO), Madrid, Spain
| | - Maria Sibilia
- Department of Medicine I, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
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Krohn M, Zoufal V, Mairinger S, Wanek T, Paarmann K, Brüning T, Eiriz I, Brackhan M, Langer O, Pahnke J. Generation and Characterization of an Abcc1 Humanized Mouse Model ( hABCC1flx/flx ) with Knockout Capability. Mol Pharmacol 2019; 96:138-147. [PMID: 31189668 DOI: 10.1124/mol.119.115824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 06/03/2019] [Indexed: 01/18/2023] Open
Abstract
ATP-binding cassette (ABC) transporters such as ABCB1 (P-glycoprotein), ABCC1 (MRP1), and ABCG2 (BCRP) are well known for their role in rendering cancer cells resistant to chemotherapy. Additionally, recent research provided evidence that, along with other ABC transporters (ABCA1 and ABCA7), they might be cornerstones to tackle neurodegenerative diseases. Overcoming chemoresistance in cancer, understanding drug-drug interactions, and developing efficient and specific drugs that alter ABC transporter function are hindered by a lack of in vivo research models, which are fully predictive for humans. Hence, the humanization of ABC transporters in mice has become a major focus in pharmaceutical and neurodegenerative research. Here, we present a characterization of the first Abcc1 humanized mouse line. To preserve endogenous expression profiles, we chose to generate a knockin mouse model that leads to the expression of a chimeric protein that is fully human except for one amino acid. We found robust mRNA and protein expression within all major organs analyzed (brain, lung, spleen, and kidney). Furthermore, we demonstrate the functionality of the expressed human ABCC1 protein in brain and lungs using functional positron emission tomography imaging in vivo. Through the introduction of loxP sites, we additionally enabled this humanized mouse model for highly sophisticated studies involving cell type-specific transporter ablation. Based on our data, the presented mouse model appears to be a promising tool for the investigation of cell-specific ABCC1 function. It can provide a new basis for better translation of preclinical research.
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Affiliation(s)
- Markus Krohn
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
| | - Viktoria Zoufal
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
| | - Severin Mairinger
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
| | - Thomas Wanek
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
| | - Kristin Paarmann
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
| | - Thomas Brüning
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
| | - Ivan Eiriz
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
| | - Mirjam Brackhan
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
| | - Oliver Langer
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
| | - Jens Pahnke
- Department of Neuro-/Pathology and Oslo University Hospital, University of Oslo, Oslo, Norway (M.K., K.P., T.B., I.E., M.B., J.P.); Biomedical Systems, Center for Health & Bioresources, Austrian Institute of Technology, Seibersdorf, Austria (V.Z., S.M., T.W., O.L.); Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria (O.L.); Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany (J.P.); Leibniz-Institute of Plant Biochemistry, Halle, Germany (J.P.); and Department of Pharmacology, Medical Faculty, University of Latvia, Rīga, Latvia (J.P.)
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Hernández Lozano I, Karch R, Bauer M, Blaickner M, Matsuda A, Wulkersdorfer B, Hacker M, Zeitlinger M, Langer O. Towards Improved Pharmacokinetic Models for the Analysis of Transporter-Mediated Hepatic Disposition of Drug Molecules with Positron Emission Tomography. AAPS J 2019; 21:61. [PMID: 31037511 PMCID: PMC6488550 DOI: 10.1208/s12248-019-0323-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 03/19/2019] [Indexed: 12/19/2022] Open
Abstract
Positron emission tomography (PET) imaging with radiolabeled drugs holds great promise to assess the influence of membrane transporters on hepatobiliary clearance of drugs. To exploit the full potential of PET, quantitative pharmacokinetic models are required. In this study, we evaluated the suitability of different compartment models to describe the hepatic disposition of [11C]erlotinib as a small-molecule model drug which undergoes transporter-mediated hepatobiliary excretion. We analyzed two different, previously published data sets in healthy volunteers, in which a baseline [11C]erlotinib PET scan was followed by a second PET scan either after oral intake of unlabeled erlotinib (300 mg) or after intravenous infusion of the prototypical organic anion-transporting polypeptide inhibitor rifampicin (600 mg). We assessed a three-compartment (3C) and a four-compartment (4C) model, in which either a sampled arterial blood input function or a mathematically derived dual input function (DIF), which takes the contribution of the portal vein to the liver blood supply into account, was used. Both models provided acceptable fits of the observed PET data in the liver and extrahepatic bile duct and gall bladder. Changes in model outcome parameters between scans were consistent with the involvement of basolateral hepatocyte uptake and canalicular efflux transporters in the hepatobiliary clearance of [11C]erlotinib. Our results demonstrated that inclusion of a DIF did not lead to substantial improvements in model fits. The models developed in this work represent a step forward in applying PET as a tool to assess the impact of hepatic transporters on drug disposition and their involvement in drug-drug interactions.
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Affiliation(s)
- Irene Hernández Lozano
- Department of Clinical Pharmacology, Medical University of Vienna, A-1090, Vienna, Austria
| | - Rudolf Karch
- Centre for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, A-1090, Vienna, Austria
| | - Matthias Blaickner
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Akihiro Matsuda
- Department of Clinical Pharmacology, Medical University of Vienna, A-1090, Vienna, Austria
| | - Beatrix Wulkersdorfer
- Department of Clinical Pharmacology, Medical University of Vienna, A-1090, Vienna, Austria
| | - Marcus Hacker
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, A-1090, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, A-1090, Vienna, Austria.
- Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.
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Bauer M, Tournier N, Langer O. Imaging P-Glycoprotein Function at the Blood-Brain Barrier as a Determinant of the Variability in Response to Central Nervous System Drugs. Clin Pharmacol Ther 2019; 105:1061-1064. [PMID: 30903694 PMCID: PMC6491962 DOI: 10.1002/cpt.1402] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 02/03/2019] [Indexed: 01/13/2023]
Affiliation(s)
- Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Nicolas Tournier
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, Inserm, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Preclinical Molecular Imaging, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
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46
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Traxl A, Mairinger S, Filip T, Sauberer M, Stanek J, Poschner S, Jäger W, Zoufal V, Novarino G, Tournier N, Bauer M, Wanek T, Langer O. Inhibition of ABCB1 and ABCG2 at the Mouse Blood-Brain Barrier with Marketed Drugs To Improve Brain Delivery of the Model ABCB1/ABCG2 Substrate [ 11C]erlotinib. Mol Pharm 2019; 16:1282-1293. [PMID: 30694684 DOI: 10.1021/acs.molpharmaceut.8b01217] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
P-Glycoprotein (ABCB1) and breast cancer resistance protein (ABCG2) are two efflux transporters at the blood-brain barrier (BBB), which effectively restrict brain distribution of diverse drugs, such as tyrosine kinase inhibitors. There is a crucial need for pharmacological ABCB1 and ABCG2 inhibition protocols for a more effective treatment of brain diseases. In the present study, seven marketed drugs (osimertinib, erlotinib, nilotinib, imatinib, lapatinib, pazopanib, and cyclosporine A) and one nonmarketed drug (tariquidar), with known in vitro ABCB1/ABCG2 inhibitory properties, were screened for their inhibitory potency at the BBB in vivo. Positron emission tomography (PET) using the model ABCB1/ABCG2 substrate [11C]erlotinib was performed in mice. Tested inhibitors were administered as i.v. bolus injections at 30 min before the start of the PET scan, followed by a continuous i.v. infusion for the duration of the PET scan. Five of the tested drugs increased total distribution volume of [11C]erlotinib in the brain ( VT,brain) compared to vehicle-treated animals (tariquidar, + 69%; erlotinib, + 19% and +23% for the 21.5 mg/kg and the 43 mg/kg dose, respectively; imatinib, + 22%; lapatinib, + 25%; and cyclosporine A, + 49%). For all drugs, increases in [11C]erlotinib brain distribution were lower than in Abcb1a/b(-/-)Abcg2(-/-) mice (+149%), which suggested that only partial ABCB1/ABCG2 inhibition was reached at the mouse BBB. The plasma concentrations of the tested drugs at the time of the PET scan were higher than clinically achievable plasma concentrations. Some of the tested drugs led to significant increases in blood radioactivity concentrations measured at the end of the PET scan (erlotinib, + 103% and +113% for the 21.5 mg/kg and the 43 mg/kg dose, respectively; imatinib, + 125%; and cyclosporine A, + 101%), which was most likely caused by decreased hepatobiliary excretion of radioactivity. Taken together, our data suggest that some marketed tyrosine kinase inhibitors may be repurposed to inhibit ABCB1 and ABCG2 at the BBB. From a clinical perspective, moderate increases in brain delivery despite the administration of high i.v. doses as well as peripheral drug-drug interactions due to transporter inhibition in clearance organs question the translatability of this concept.
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Affiliation(s)
- Alexander Traxl
- Center for Health & Bioresources , AIT Austrian Institute of Technology GmbH , 2444 Seibersdorf , Austria
| | - Severin Mairinger
- Center for Health & Bioresources , AIT Austrian Institute of Technology GmbH , 2444 Seibersdorf , Austria
| | - Thomas Filip
- Center for Health & Bioresources , AIT Austrian Institute of Technology GmbH , 2444 Seibersdorf , Austria
| | - Michael Sauberer
- Center for Health & Bioresources , AIT Austrian Institute of Technology GmbH , 2444 Seibersdorf , Austria
| | - Johann Stanek
- Center for Health & Bioresources , AIT Austrian Institute of Technology GmbH , 2444 Seibersdorf , Austria
| | - Stefan Poschner
- Department of Clinical Pharmacy and Diagnostics , University of Vienna , 1090 Vienna , Austria
| | - Walter Jäger
- Department of Clinical Pharmacy and Diagnostics , University of Vienna , 1090 Vienna , Austria
| | - Viktoria Zoufal
- Center for Health & Bioresources , AIT Austrian Institute of Technology GmbH , 2444 Seibersdorf , Austria
| | - Gaia Novarino
- Institute of Science and Technology (IST) Austria , 3400 Klosterneuburg , Austria
| | - Nicolas Tournier
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot , CEA, Inserm, Univ. Paris Sud, CNRS, Université Paris-Saclay , 91450 Orsay , France
| | - Martin Bauer
- Department of Clinical Pharmacology , Medical University of Vienna , 1090 Vienna , 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.,Department of Clinical Pharmacology , Medical University of Vienna , 1090 Vienna , Austria.,Department of Biomedical Imaging und Image-guided Therapy, Division of Nuclear Medicine , Medical University of Vienna , 1090 Vienna , Austria
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Matzneller P, Kussmann M, Eberl S, Maier-Salamon A, Jäger W, Bauer M, Langer O, Zeitlinger M, Poeppl W. Pharmacokinetics of the P-gp Inhibitor Tariquidar in Rats After Intravenous, Oral, and Intraperitoneal Administration. Eur J Drug Metab Pharmacokinet 2019; 43:599-606. [PMID: 29616423 PMCID: PMC6133083 DOI: 10.1007/s13318-018-0474-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Background and objective P-glycoprotein (P-gp), a transmembrane transporter expressed at the blood–brain barrier, restricts the distribution of diverse central nervous system-targeted drugs from blood into brain, reducing their therapeutic efficacy. The third-generation P-gp inhibitor tariquidar (XR9576) was shown to enhance brain distribution of P-gp substrate drugs in humans. Oral bioavailability of tariquidar was found to be low in humans requiring the compound to be administered intravenously, which hinders a broader clinical use. The objective of the present study was to investigate the plasma pharmacokinetics of tariquidar in rats after single intravenous, oral, and intraperitoneal administration. Methods Two different tariquidar formulations (A and B) were used, both at a dosage of 15 mg/kg, respectively. Formulation A was a solution and formulation B was a microemulsion which was previously shown to improve the oral bioavailability of the structurally related P-gp inhibitor elacridar in mice. Results In contrast to human data, the present study found a high bioavailability of tariquidar in rats after oral dosing. Oral bioavailability was significantly higher (p = 0.032) for formulation B (86.3%) than for formulation A (71.6%). After intraperitoneal dosing bioavailability was 91.4% for formulation A and 99.6% for formulation B. Conclusion The present findings extend the available information on tariquidar and provide a basis for future studies involving oral administration of this compound.
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Affiliation(s)
- Peter Matzneller
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Manuel Kussmann
- Department of Internal Medicine I, Clinical Division of Infectious Diseases and Tropical Medicine, Medical University Vienna, Vienna, Austria
| | - Sabine Eberl
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | | | - Walter Jäger
- Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria. .,Biomedical Systems, Center for Health and Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria. .,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Wolfgang Poeppl
- Department of Internal Medicine I, Clinical Division of Infectious Diseases and Tropical Medicine, Medical University Vienna, Vienna, Austria.,Department of Dermatology and Tropical Medicine, Military Medical Cluster East, Austrian Armed Forces, Vienna, Austria
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48
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Tournier N, Bauer M, Pichler V, Nics L, Klebermass EM, Bamminger K, Matzneller P, Weber M, Karch R, Caillé F, Auvity S, Marie S, Jäger W, Wadsak W, Hacker M, Zeitlinger M, Langer O. Impact of P-Glycoprotein Function on the Brain Kinetics of the Weak Substrate 11C-Metoclopramide Assessed with PET Imaging in Humans. J Nucl Med 2019; 60:985-991. [PMID: 30630940 DOI: 10.2967/jnumed.118.219972] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 11/28/2018] [Indexed: 02/07/2023] Open
Abstract
PET with avid substrates of P-glycoprotein (ABCB1) provided evidence of the role of this efflux transporter in effectively restricting the brain penetration of its substrates across the human blood-brain barrier (BBB). This may not reflect the situation for weak ABCB1 substrates including several antidepressants, antiepileptic drugs, and neuroleptics, which exert central nervous system effects despite being transported by ABCB1. We performed PET with the weak ABCB1 substrate 11C-metoclopramide in humans to elucidate the impact of ABCB1 function on its brain kinetics. Methods: Ten healthy male subjects underwent 2 consecutive 11C-metoclopramide PET scans without and with ABCB1 inhibition using cyclosporine A (CsA). Pharmacokinetic modeling was performed to estimate the total volume of distribution (V T) and the influx (K 1) and efflux (k 2) rate constants between plasma and selected brain regions. Furthermore, 11C-metoclopramide washout from the brain was estimated by determining the elimination slope (k E,brain) of the brain time-activity curves. Results: In baseline scans, 11C-metoclopramide showed appreciable brain distribution (V T = 2.11 ± 0.33 mL/cm3). During CsA infusion, whole-brain gray matter V T and K 1 were increased by 29% ± 17% and 9% ± 12%, respectively. K 2 was decreased by 15% ± 5%, consistent with a decrease in k E,brain (-32% ± 18%). The impact of CsA on outcome parameters was significant and similar across brain regions except for the pituitary gland, which is not protected by the BBB. Conclusion: Our results show for the first time that ABCB1 does not solely account for the "barrier" property of the BBB but also acts as a detoxifying system to limit the overall brain exposure to its substrates at the human blood-brain interface.
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Affiliation(s)
- Nicolas Tournier
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, Inserm, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Verena Pichler
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Lukas Nics
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Eva-Maria Klebermass
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Karsten Bamminger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Peter Matzneller
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Maria Weber
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Rudolf Karch
- Centre for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Fabien Caillé
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, Inserm, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Sylvain Auvity
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, Inserm, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Solène Marie
- UMR 1023 IMIV, Service Hospitalier Frédéric Joliot, CEA, Inserm, Université Paris Sud, CNRS, Université Paris-Saclay, Orsay, France
| | - Walter Jäger
- Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria
| | - Wolfgang Wadsak
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.,Center for Biomarker Research in Medicine-CBmed GmbH, Graz, Austria; and
| | - Marcus Hacker
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Oliver Langer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.,Biomedical Systems, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
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Yang CT, Ghosh KK, Padmanabhan P, Langer O, Liu J, Eng DNC, Halldin C, Gulyás B. PET-MR and SPECT-MR multimodality probes: Development and challenges. Theranostics 2018; 8:6210-6232. [PMID: 30613293 PMCID: PMC6299694 DOI: 10.7150/thno.26610] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 06/08/2018] [Indexed: 12/22/2022] Open
Abstract
Positron emission tomography (PET)-magnetic resonance (MR) or single photon emission computed tomography (SPECT)-MR hybrid imaging is being used in daily clinical practice. Due to its advantages over stand-alone PET, SPECT or MR imaging, in many areas such as oncology, the demand for hybrid imaging techniques is increasing dramatically. The use of multimodal imaging probes or biomarkers in a single molecule or particle to characterize the imaging subjects such as disease tissues certainly provides us with more accurate diagnosis and promotes therapeutic accuracy. A limited number of multimodal imaging probes are being used in preclinical and potential clinical investigations. The further development of multimodal PET-MR and SPECT-MR imaging probes includes several key elements: novel synthetic strategies, high sensitivity for accurate quantification and high anatomic resolution, favourable pharmacokinetic profile and target-specific binding of a new probe. This review thoroughly summarizes all recently available and noteworthy PET-MR and SPECT-MR multimodal imaging probes including small molecule bimodal probes, nano-sized bimodal probes, small molecular trimodal probes and nano-sized trimodal probes. To the best of our knowledge, this is the first comprehensive overview of all PET-MR and SPECT-MR multimodal probes. Since the development of multimodal PET-MR and SPECT-MR imaging probes is an emerging research field, a selection of 139 papers were recognized following the literature review. The challenges for designing multimodal probes have also been addressed in order to offer some future research directions for this novel interdisciplinary research field.
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Affiliation(s)
- Chang-Tong Yang
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 59 Nanyang Drive, Singapore 636921
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Industrial Technology and Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, P.R. China, 315201
- Department of Nuclear Medicine and Molecular Imaging, Radiological Sciences Division, Singapore General Hospital, Outram Road, Singapore 169608
| | - Krishna K. Ghosh
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 59 Nanyang Drive, Singapore 636921
| | - Parasuraman Padmanabhan
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 59 Nanyang Drive, Singapore 636921
| | - Oliver Langer
- Department of Clinical Pharmacology and Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, A-1090, Vienna, Austria
- Center for Health and Bioresources, Biomedical Systems, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria
| | - Jiang Liu
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Industrial Technology and Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, P.R. China, 315201
| | - David Ng Chee Eng
- Department of Nuclear Medicine and Molecular Imaging, Radiological Sciences Division, Singapore General Hospital, Outram Road, Singapore 169608
- Duke-NUS Medical School, 8 College Road, Singapore 169857
| | - Christer Halldin
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 59 Nanyang Drive, Singapore 636921
- Karolinska Institutet, Department of Clinical Neuroscience, S-171 76, Stockholm, Sweden
| | - Balázs Gulyás
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 59 Nanyang Drive, Singapore 636921
- Karolinska Institutet, Department of Clinical Neuroscience, S-171 76, Stockholm, Sweden
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50
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Goutal S, Langer O, Auvity S, Andrieux K, Coulon C, Caillé F, Gervais P, Cisternino S, Declèves X, Tournier N. Intravenous infusion for the controlled exposure to the dual ABCB1 and ABCG2 inhibitor elacridar in nonhuman primates. Drug Deliv Transl Res 2018; 8:536-542. [PMID: 29294257 DOI: 10.1007/s13346-017-0472-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Elacridar (GF120918) is a highly potent inhibitor of both P-glycoprotein (ABCB1) and breast cancer resistance protein (ABCG2), the main efflux transporters expressed at the blood-brain barrier (BBB). Elacridar shows very low aqueous solubility, which complicates its formulation for i.v. administration. An intravenous infusion protocol would be preferred to achieve high and controlled plasma concentrations of elacridar in large animals, including nonhuman primates. Formulation of elacridar for i.v. infusion was achieved using a co-solvent strategy, resulting in an aqueous dispersion with a final concentration of 5 g L-1 elacridar with tetrahydrofuran (5% w/v) in aqueous D-glucose solution (2.5%, w/v). Particle size (mean = 2.8 ± 0.9 μm) remained stable for 150 min. The preparation was i.v. administered as a continuous infusion (12 mg kg-1 h-1 for 90 min) to three baboons. Arterial and venous plasma pharmacokinetics (PK) of elacridar were monitored using a newly developed and validated HPLC-UV method. Elacridar concentration increased rapidly to reach a plateau at 9.5 μg mL-1 within 20 min after the start of infusion. Elacridar PK in venous plasma did not differ from arterial plasma facing the BBB, indicating the absence of an arteriovenous concentration gradient. Intravenous infusion of elacridar allows for controlled exposure of the BBB and offers a useful tool to assess the impact of ABCB1/ABCG2 on drug disposition to the brain in nonhuman primates, a relevant animal model for the study of transporter function at the BBB.
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Affiliation(s)
- Sébastien Goutal
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France.,CEA/DRF/Institut de Biologie François Jacob/MIRCen, Fontenay-aux-Roses, France
| | - Oliver Langer
- Health and Environment Department, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.,Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.,Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Sylvain Auvity
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France.,Variabilité de Réponse aux Psychotropes, INSERM, U1144, 75006, Paris, France.,Faculté de Pharmacie de Paris, Université Paris Descartes, Université Sorbonne Paris Cité, 75006, Paris, France
| | - Karine Andrieux
- Faculté de Pharmacie de Paris, Université Paris Descartes, Université Sorbonne Paris Cité, 75006, Paris, France.,UTCBS, CNRS UMR 8258, Inserm U1022, 75006, Paris, France
| | - Christine Coulon
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Fabien Caillé
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Philippe Gervais
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France
| | - Salvatore Cisternino
- Variabilité de Réponse aux Psychotropes, INSERM, U1144, 75006, Paris, France.,Faculté de Pharmacie de Paris, Université Paris Descartes, Université Sorbonne Paris Cité, 75006, Paris, France
| | - Xavier Declèves
- Variabilité de Réponse aux Psychotropes, INSERM, U1144, 75006, Paris, France.,Faculté de Pharmacie de Paris, Université Paris Descartes, Université Sorbonne Paris Cité, 75006, Paris, France
| | - Nicolas Tournier
- IMIV, CEA, Inserm, CNRS, Univ. Paris-Sud, Université Paris Saclay, CEA-SHFJ, Orsay, France. .,CEA/DRF/JOLIOT/Service Hospitalier Frédéric Joliot, 91406, Orsay, France.
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