51
|
Tan SK, Jermakowicz A, Mookhtiar AK, Nemeroff CB, Schürer SC, Ayad NG. Drug Repositioning in Glioblastoma: A Pathway Perspective. Front Pharmacol 2018; 9:218. [PMID: 29615902 PMCID: PMC5864870 DOI: 10.3389/fphar.2018.00218] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 02/27/2018] [Indexed: 12/27/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most malignant primary adult brain tumor. The current standard of care is surgical resection, radiation, and chemotherapy treatment, which extends life in most cases. Unfortunately, tumor recurrence is nearly universal and patients with recurrent glioblastoma typically survive <1 year. Therefore, new therapies and therapeutic combinations need to be developed that can be quickly approved for use in patients. However, in order to gain approval, therapies need to be safe as well as effective. One possible means of attaining rapid approval is repurposing FDA approved compounds for GBM therapy. However, candidate compounds must be able to penetrate the blood-brain barrier (BBB) and therefore a selection process has to be implemented to identify such compounds that can eliminate GBM tumor expansion. We review here psychiatric and non-psychiatric compounds that may be effective in GBM, as well as potential drugs targeting cell death pathways. We also discuss the potential of data-driven computational approaches to identify compounds that induce cell death in GBM cells, enabled by large reference databases such as the Library of Integrated Network Cell Signatures (LINCS). Finally, we argue that identifying pathways dysregulated in GBM in a patient specific manner is essential for effective repurposing in GBM and other gliomas.
Collapse
Affiliation(s)
- Sze Kiat Tan
- Department of Psychiatry and Behavioral Sciences, Center for Therapeutic Innovation, Miami Project to Cure Paralysis, Sylvester Comprehensive Cancer Center, University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Anna Jermakowicz
- Department of Psychiatry and Behavioral Sciences, Center for Therapeutic Innovation, Miami Project to Cure Paralysis, Sylvester Comprehensive Cancer Center, University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Adnan K Mookhtiar
- Department of Psychiatry and Behavioral Sciences, Center for Therapeutic Innovation, Miami Project to Cure Paralysis, Sylvester Comprehensive Cancer Center, University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Charles B Nemeroff
- Department of Psychiatry and Behavioral Sciences and Center on Aging, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Stephan C Schürer
- Department of Molecular Pharmacology, Center for Computational Sciences, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Nagi G Ayad
- Department of Psychiatry and Behavioral Sciences, Center for Therapeutic Innovation, Miami Project to Cure Paralysis, Sylvester Comprehensive Cancer Center, University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL, United States
| |
Collapse
|
52
|
Sayyed K, Le Vee M, Abdel-Razzak Z, Fardel O. Inhibition of organic anion transporter (OAT) activity by cigarette smoke condensate. Toxicol In Vitro 2017. [DOI: 10.1016/j.tiv.2017.06.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
53
|
Römermann K, Fedrowitz M, Hampel P, Kaczmarek E, Töllner K, Erker T, Sweet DH, Löscher W. Multiple blood-brain barrier transport mechanisms limit bumetanide accumulation, and therapeutic potential, in the mammalian brain. Neuropharmacology 2017; 117:182-194. [DOI: 10.1016/j.neuropharm.2017.02.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 01/31/2017] [Accepted: 02/07/2017] [Indexed: 12/21/2022]
|
54
|
Acute effects of focused ultrasound-induced increases in blood-brain barrier permeability on rat microvascular transcriptome. Sci Rep 2017; 7:45657. [PMID: 28374753 PMCID: PMC5379491 DOI: 10.1038/srep45657] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/02/2017] [Indexed: 02/07/2023] Open
Abstract
Therapeutic treatment options for central nervous system diseases are greatly limited by the blood-brain barrier (BBB). Focused ultrasound (FUS), in conjunction with circulating microbubbles, can be used to induce a targeted and transient increase in BBB permeability, providing a unique approach for the delivery of drugs from the systemic circulation into the brain. While preclinical research has demonstrated the utility of FUS, there remains a large gap in our knowledge regarding the impact of sonication on BBB gene expression. This work is focused on investigating the transcriptional changes in dorsal hippocampal rat microvessels in the acute stages following sonication. Microarray analysis of microvessels was performed at 6 and 24 hrs post-FUS. Expression changes in individual genes and bioinformatic analysis suggests that FUS may induce a transient inflammatory response in microvessels. Increased transcription of proinflammatory cytokine genes appears to be short-lived, largely returning to baseline by 24 hrs. This observation may help to explain some previously observed bioeffects of FUS and may also be a driving force for the angiogenic processes and reduced drug efflux suggested by this work. While further studies are necessary, these results open up intriguing possibilities for novel FUS applications and suggest possible routes for pharmacologically modifying the technique.
Collapse
|
55
|
Kovacsics D, Patik I, Özvegy-Laczka C. The role of organic anion transporting polypeptides in drug absorption, distribution, excretion and drug-drug interactions. Expert Opin Drug Metab Toxicol 2016; 13:409-424. [PMID: 27783531 DOI: 10.1080/17425255.2017.1253679] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
INTRODUCTION The in vivo fate and effectiveness of a drug depends highly on its absorption, distribution, metabolism, excretion and toxicity (ADME-Tox). Organic anion transporting polypeptides (OATPs) are membrane proteins involved in the cellular uptake of various organic compounds, including clinically used drugs. Since OATPs are significant players in drug absorption and distribution, modulation of OATP function via pharmacotherapy with OATP substrates/inhibitors, or modulation of their expression, affects drug pharmacokinetics. Given their cancer-specific expression, OATPs may also be considered anticancer drug targets. Areas covered: We describe the human OATP family, discussing clinically relevant consequences of altered OATP function. We offer a critical analysis of published data on the role of OATPs in ADME and in drug-drug interactions, especially focusing on OATP1A2, 1B1, 1B3 and 2B1. Expert opinion: Four members of the OATP family, 1A2, 1B1, 1B3 and 2B1, have been characterized in detail. As biochemical and pharmacological knowledge on the other OATPs is lacking, it seems timely to direct research efforts towards developing the experimental framework needed to investigate the transport mechanism and substrate specificity of the poorly described OATPs. In addition, elucidating the role of OATPs in tumor development and therapy response are critical avenues for further research.
Collapse
Affiliation(s)
- Daniella Kovacsics
- a Membrane protein research group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences , Budapest , Hungary
| | - Izabel Patik
- a Membrane protein research group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences , Budapest , Hungary
| | - Csilla Özvegy-Laczka
- a Membrane protein research group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences , Budapest , Hungary
| |
Collapse
|
56
|
Kikuchi T, Okamura T, Okada M, Ogawa M, Suzuki C, Wakizaka H, Yui J, Fukumura T, Gee AD, Zhang MR. Benzyl [11C]Hippurate as an Agent for Measuring the Activities of Organic Anion Transporter 3 in the Brain and Multidrug Resistance-Associated Protein 4 in the Heart of Mice. J Med Chem 2016; 59:5847-56. [DOI: 10.1021/acs.jmedchem.6b00454] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tatsuya Kikuchi
- Molecular
Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa,
Inage-ku, Chiba 263-8555, Japan
- Division
of Imaging Sciences and Biomedical Engineering, King’s College London, Fourth Floor Lambeth Wing, St. Thomas’ Hospital, Lambeth Palace
Road, London SE1 7EH, United Kingdom
| | - Toshimitsu Okamura
- Molecular
Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa,
Inage-ku, Chiba 263-8555, Japan
| | - Maki Okada
- Molecular
Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa,
Inage-ku, Chiba 263-8555, Japan
| | - Masanao Ogawa
- Molecular
Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa,
Inage-ku, Chiba 263-8555, Japan
- SHI Accelerater Service Co. Ltd., 5-9-1 Kitashinagawa, Shinagawa-ku, Tokyo 141-8686, Japan
| | - Chie Suzuki
- Molecular
Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa,
Inage-ku, Chiba 263-8555, Japan
- Preeminent
Medical Photonics Education Research Center, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Hidekatsu Wakizaka
- Molecular
Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa,
Inage-ku, Chiba 263-8555, Japan
| | - Joji Yui
- Molecular
Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa,
Inage-ku, Chiba 263-8555, Japan
| | - Toshimitsu Fukumura
- Molecular
Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa,
Inage-ku, Chiba 263-8555, Japan
| | - Antony D. Gee
- Division
of Imaging Sciences and Biomedical Engineering, King’s College London, Fourth Floor Lambeth Wing, St. Thomas’ Hospital, Lambeth Palace
Road, London SE1 7EH, United Kingdom
| | - Ming-Rong Zhang
- Molecular
Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa,
Inage-ku, Chiba 263-8555, Japan
| |
Collapse
|
57
|
Bundgaard C, Eneberg E, Sánchez C. P-glycoprotein differentially affects escitalopram, levomilnacipran, vilazodone and vortioxetine transport at the mouse blood–brain barrier in vivo. Neuropharmacology 2016; 103:104-11. [DOI: 10.1016/j.neuropharm.2015.12.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 12/09/2015] [Accepted: 12/11/2015] [Indexed: 12/16/2022]
|
58
|
In Vivo and In Vitro Evidence for Brain Uptake of 4-Phenylbutyrate by the Monocarboxylate Transporter 1 (MCT1). Pharm Res 2016; 33:1711-22. [PMID: 27026010 DOI: 10.1007/s11095-016-1912-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 03/22/2016] [Indexed: 10/22/2022]
Abstract
PURPOSE 4-Phenylbutyrate (4-PBA) is expected to be a potential therapeutic for several neurodegenerative diseases. These activities require 4-PBA transport into the brain across the blood-brain barrier (BBB). The objective of the present study was to characterize the brain transport mechanism of 4-PBA through the BBB. METHODS The brain transport of 4-PBA across the BBB was investigated following intravenous (IV) injection and internal carotid artery perfusion (ICAP) in vivo. The mechanism of transport was examined using TR-BBB cells, an in vitro model of the BBB. RESULTS The volume of distribution (VD) of 4-PBA by rat brain was about 7-fold greater than that of sucrose, a BBB impermeable vascular space marker, suggesting the blood-to-brain transport of 4-PBA through the BBB in the physiological state. [(14)C]4-PBA uptake by TR-BBB cells showed time-, pH- and concentration-dependence with a K m of 13.4 mM at pH 7.4 and 3.22 mM at pH 6.0. The uptake was Na(+) independent, and was significantly inhibited by alpha-cyano-4-hydroxycinnamate (a typical inhibitor for monocarboxylate transport), endogenous monocarboxylate compounds and monocarboxylic drugs. Lactate and valproate competitively inhibited [(14)C]4-PBA uptake with K i value of 13.5 mM and 7.47 mM, respectively. These results indicate the role of monocarboxylate transporters (MCTs) in 4-PBA transport into the brain at the BBB. TR-BBB cells expressed mRNA of rMCT1, 2, and 4, especially, rMCT1 showed high mRNA expression level. In addition, [(14)C]4-PBA uptake was inhibited by rMCT1 specific small interfering RNA. CONCLUSION The transport mechanism of 4-PBA from blood to brain across the BBB likely involves MCT1.
Collapse
|
59
|
On NH, Yathindranath V, Sun Z, Miller DW. Pathways for Drug Delivery to the Central Nervous System. Drug Deliv 2016. [DOI: 10.1002/9781118833322.ch16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
|
60
|
Clemens-Hemmelmann M, Kuffner C, Metz V, Kircher L, Schmitt U, Hiemke C, Postina R, Zentel R. Amphiphilic Copolymers Shuttle Drugs Across the Blood-Brain Barrier. Macromol Biosci 2016; 16:655-65. [DOI: 10.1002/mabi.201500388] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 12/19/2015] [Indexed: 11/08/2022]
Affiliation(s)
| | - Christiane Kuffner
- Department of Psychiatry and Psychotherapy; University Medical Center Johannes Gutenberg-University Mainz; 55131 Mainz Germany
| | - Verena Metz
- Institute of Pharmacy and Biochemistry - Therapeutical Life Sciences; Johannes Gutenberg-University Mainz; 55128 Mainz Germany
| | - Linda Kircher
- Institute for Organic Chemistry; Johannes Gutenberg-University Mainz; 55128 Mainz Germany
| | - Ulrich Schmitt
- Department of Psychiatry and Psychotherapy; University Medical Center Johannes Gutenberg-University Mainz; 55131 Mainz Germany
| | - Christoph Hiemke
- Department of Psychiatry and Psychotherapy; University Medical Center Johannes Gutenberg-University Mainz; 55131 Mainz Germany
| | - Rolf Postina
- Institute of Pharmacy and Biochemistry - Therapeutical Life Sciences; Johannes Gutenberg-University Mainz; 55128 Mainz Germany
| | - Rudolf Zentel
- Institute for Organic Chemistry; Johannes Gutenberg-University Mainz; 55128 Mainz Germany
| |
Collapse
|
61
|
Sander K, Galante E, Gendron T, Yiannaki E, Patel N, Kalber TL, Badar A, Robson M, Johnson SP, Bauer F, Mairinger S, Stanek J, Wanek T, Kuntner C, Kottke T, Weizel L, Dickens D, Erlandsson K, Hutton BF, Lythgoe MF, Stark H, Langer O, Koepp M, Årstad E. Development of Fluorine-18 Labeled Metabolically Activated Tracers for Imaging of Drug Efflux Transporters with Positron Emission Tomography. J Med Chem 2015; 58:6058-80. [PMID: 26161456 DOI: 10.1021/acs.jmedchem.5b00652] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Increased activity of efflux transporters, e.g., P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP), at the blood-brain barrier is a pathological hallmark of many neurological diseases, and the resulting multiple drug resistance represents a major clinical challenge. Noninvasive imaging of transporter activity can help to clarify the underlying mechanisms of drug resistance and facilitate diagnosis, patient stratification, and treatment monitoring. We have developed a metabolically activated radiotracer for functional imaging of P-gp/BCRP activity with positron emission tomography (PET). In preclinical studies, the tracer showed excellent initial brain uptake and clean conversion to the desired metabolite, although at a sluggish rate. Blocking with P-gp/BCRP modulators led to increased levels of brain radioactivity; however, dynamic PET did not show differential clearance rates between treatment and control groups. Our results provide proof-of-concept for development of prodrug tracers for imaging of P-gp/BCRP function in vivo but also highlight some challenges associated with this strategy.
Collapse
Affiliation(s)
- Kerstin Sander
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Eva Galante
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Thibault Gendron
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Elena Yiannaki
- ‡Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Niral Patel
- §Centre for Advanced Biomedical Imaging, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Tammy L Kalber
- §Centre for Advanced Biomedical Imaging, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Adam Badar
- §Centre for Advanced Biomedical Imaging, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Mathew Robson
- ∥Cancer Institute, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Sean P Johnson
- ∥Cancer Institute, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Florian Bauer
- ⊥Department of Medicinal Chemistry, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
| | - Severin Mairinger
- #Health and Environment Department, AIT Austrian Institute of Technology GmbH, A-2444 Seibersdorf, Austria
| | - Johann Stanek
- #Health and Environment Department, AIT Austrian Institute of Technology GmbH, A-2444 Seibersdorf, Austria
| | - Thomas Wanek
- #Health and Environment Department, AIT Austrian Institute of Technology GmbH, A-2444 Seibersdorf, Austria
| | - Claudia Kuntner
- #Health and Environment Department, AIT Austrian Institute of Technology GmbH, A-2444 Seibersdorf, Austria
| | - Tim Kottke
- ∇Institute of Pharmaceutical Chemistry, Biocenter, Johann Wolfgang Goethe University, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main, Germany
| | - Lilia Weizel
- ∇Institute of Pharmaceutical Chemistry, Biocenter, Johann Wolfgang Goethe University, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main, Germany
| | - David Dickens
- ○The Wolfson Centre for Personalised Medicine, Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Block A Waterhouse Buildings, 1-5 Brownlow Street, Liverpool L69 3GL, U.K
| | - Kjell Erlandsson
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Brian F Hutton
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Mark F Lythgoe
- §Centre for Advanced Biomedical Imaging, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Holger Stark
- ∇Institute of Pharmaceutical Chemistry, Biocenter, Johann Wolfgang Goethe University, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main, Germany
| | - Oliver Langer
- ●Department of Clinical Pharmacology, Medical University of Vienna, Waehringer-Guertel 18-20, A-1090 Vienna, Austria
| | - Matthias Koepp
- ◆Department of Clinical and Experimental Epilepsy, Institute of Neurology, University College London, Queen Square, London WC1N 3BG, U.K
| | - Erik Årstad
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
- ‡Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| |
Collapse
|
62
|
Lee GS, Kappler K, Porter CJH, Scanlon MJ, Nicolazzo JA. Fatty Acid Binding Proteins Expressed at the Human Blood–Brain Barrier Bind Drugs in an Isoform-Specific Manner. Pharm Res 2015; 32:3432-46. [DOI: 10.1007/s11095-015-1764-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 07/21/2015] [Indexed: 12/20/2022]
|
63
|
Characterization of efflux transport proteins of the human choroid plexus papilloma cell line HIBCPP, a functional in vitro model of the blood-cerebrospinal fluid barrier. Pharm Res 2015; 32:2973-82. [PMID: 25986174 DOI: 10.1007/s11095-015-1679-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 03/18/2015] [Indexed: 01/06/2023]
Abstract
PURPOSE To characterize the human choroid plexus (CP) papilloma cell line HIBCPP with respect to ABC export protein expression and function in order to evaluate its use as an in vitro model to study carrier-mediated transport processes at the CP. METHODS Expression profiles of ABC transporters were studied by quantitative real-time PCR and Western Blot analysis. Functionality of transporters was investigated by means of uptake experiments and permeation studies carried out on permeable filter systems. In addition, immunohistochemistry served to study localization of ABCC1 and ABCC4. RESULTS Both qPCR and Western Blot revealed that ABC transporters known to be expressed in CP are also expressed in HIBCPP cells. Immunohistochemistry confirmed basolateral expression of ABCC1. Functionality of ABCC1, ABCC4, ABCB1 and ABCG2 could be shown in uptake assays. CONCLUSIONS Altogether, the HIBCPP cells promise to be a functional and relevant in vitro tool to investigate transport processes at the blood-cerebrospinal fluid barrier.
Collapse
|
64
|
Salvamoser JD, Avemary J, Luna-Munguia H, Pascher B, Getzinger T, Pieper T, Kudernatsch M, Kluger G, Potschka H. Glutamate-Mediated Down-Regulation of the Multidrug-Resistance Protein BCRP/ABCG2 in Porcine and Human Brain Capillaries. Mol Pharm 2015; 12:2049-60. [PMID: 25898179 DOI: 10.1021/mp500841w] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Breast cancer resistance protein (BCRP) functions as a major molecular gatekeeper at the blood-brain barrier. Considering its impact on access to the brain by therapeutic drugs and harmful xenobiotics, it is of particular interest to elucidate the mechanisms of its regulation. Excessive glutamate concentrations have been reported during epileptic seizures or as a consequence of different brain insults including brain ischemia. Previously, we have demonstrated that glutamate can trigger an induction of the transporter P-glycoprotein. These findings raised the question whether other efflux transporters are affected in a comparable manner. Glutamate exposure proved to down-regulate BCRP transport function and expression in isolated porcine capillaries. The reduction was efficaciously prevented by coincubation with N-methyl-d-aspartate (NMDA) receptor antagonist MK-801. The involvement of the NMDA receptor in the down-regulation of BCRP was further confirmed by experiments showing an effect of NMDA exposure on brain capillary BCRP transport function and expression. Pharmacological targeting of cyclooxygenase-1 and -2 (COX-1 and -2) using the nonselective inhibitor indomethacin, COX-1 inhibitor SC-560, and COX-2 inhibitor celecoxib revealed a contribution of COX-2 activity to the NMDA receptor's downstream signaling events affecting BCRP. Translational studies were performed using human capillaries isolated from surgical specimens of epilepsy patients. The findings confirmed a glutamate-induced down-regulation of BCRP transport activity in human capillaries, which argued against major species differences. In conclusion, our data reveal a novel mechanism of BCRP down-regulation in porcine and human brain capillaries. Moreover, together with previous data sets for P-glycoprotein, the findings point to a contrasting impact of the signaling pathway on the regulation of BCRP and P-glycoprotein. The effect of glutamate and arachidonic acid signaling on BCRP function might have implications for brain drug delivery and for radiotracer brain access in epilepsy patients and patients with other brain insults.
Collapse
Affiliation(s)
- Josephine D Salvamoser
- †Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University, Koeniginstrasse 16, D-80539 Munich, Germany
| | - Janine Avemary
- †Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University, Koeniginstrasse 16, D-80539 Munich, Germany
| | - Hiram Luna-Munguia
- †Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University, Koeniginstrasse 16, D-80539 Munich, Germany
| | | | | | | | | | | | - Heidrun Potschka
- †Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University, Koeniginstrasse 16, D-80539 Munich, Germany
| |
Collapse
|
65
|
Liu H, Yu N, Lu S, Ito S, Zhang X, Prasad B, He E, Lu X, Li Y, Wang F, Xu H, An G, Unadkat JD, Kusuhara H, Sugiyama Y, Sahi J. Solute Carrier Family of the Organic Anion-Transporting Polypeptides 1A2– Madin-Darby Canine Kidney II: A Promising In Vitro System to Understand the Role of Organic Anion-Transporting Polypeptide 1A2 in Blood-Brain Barrier Drug Penetration. Drug Metab Dispos 2015; 43:1008-18. [DOI: 10.1124/dmd.115.064170] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Accepted: 04/22/2015] [Indexed: 12/12/2022] Open
|
66
|
Lin F, de Gooijer MC, Hanekamp D, Brandsma D, Beijnen JH, van Tellingen O. Targeting core (mutated) pathways of high-grade gliomas: challenges of intrinsic resistance and drug efflux. CNS Oncol 2015; 2:271-88. [PMID: 25054467 DOI: 10.2217/cns.13.15] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
High-grade gliomas are the most common type of primary brain tumor and are among the most lethal types of human cancer. Most patients with a high-grade glioma have glioblastoma multiforme (GBM), the most malignant glioma subtype that is associated with a very aggressive disease course and short overall survival. Standard treatment of newly diagnosed GBM involves surgery followed by chemoradiation with temozolomide. However, despite this extensive treatment the mean overall survival is still only 14.6 months and more effective treatments are urgently needed. Although different types of GBMs are indistinguishable by histopathology, novel molecular pathological techniques allow discrimination between the four main GBM subtypes. Targeting the aberrations in the molecular pathways underlying these subtypes is a promising strategy to improve therapy. In this article, we will discuss the potential avenues and pitfalls of molecularly targeted therapies for the treatment of GBM.
Collapse
Affiliation(s)
- Fan Lin
- Department of Clinical Chemistry/Preclinical Pharmacology, The Netherlands Cancer Institute/Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | | | | | | | | | | |
Collapse
|
67
|
Nigam SK, Bush KT, Martovetsky G, Ahn SY, Liu HC, Richard E, Bhatnagar V, Wu W. The organic anion transporter (OAT) family: a systems biology perspective. Physiol Rev 2015; 95:83-123. [PMID: 25540139 PMCID: PMC4281586 DOI: 10.1152/physrev.00025.2013] [Citation(s) in RCA: 301] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The organic anion transporter (OAT) subfamily, which constitutes roughly half of the SLC22 (solute carrier 22) transporter family, has received a great deal of attention because of its role in handling of common drugs (antibiotics, antivirals, diuretics, nonsteroidal anti-inflammatory drugs), toxins (mercury, aristolochic acid), and nutrients (vitamins, flavonoids). Oats are expressed in many tissues, including kidney, liver, choroid plexus, olfactory mucosa, brain, retina, and placenta. Recent metabolomics and microarray data from Oat1 [Slc22a6, originally identified as NKT (novel kidney transporter)] and Oat3 (Slc22a8) knockouts, as well as systems biology studies, indicate that this pathway plays a central role in the metabolism and handling of gut microbiome metabolites as well as putative uremic toxins of kidney disease. Nuclear receptors and other transcription factors, such as Hnf4α and Hnf1α, appear to regulate the expression of certain Oats in conjunction with phase I and phase II drug metabolizing enzymes. Some Oats have a strong selectivity for particular signaling molecules, including cyclic nucleotides, conjugated sex steroids, odorants, uric acid, and prostaglandins and/or their metabolites. According to the "Remote Sensing and Signaling Hypothesis," which is elaborated in detail here, Oats may function in remote interorgan communication by regulating levels of signaling molecules and key metabolites in tissues and body fluids. Oats may also play a major role in interorganismal communication (via movement of small molecules across the intestine, placental barrier, into breast milk, and volatile odorants into the urine). The role of various Oat isoforms in systems physiology appears quite complex, and their ramifications are discussed in the context of remote sensing and signaling.
Collapse
Affiliation(s)
- Sanjay K Nigam
- Departments of Pediatrics, Medicine, Cellular and Molecular Medicine, Bioengineering, and Family and Preventative Medicine, University of California, San Diego, La Jolla, California
| | - Kevin T Bush
- Departments of Pediatrics, Medicine, Cellular and Molecular Medicine, Bioengineering, and Family and Preventative Medicine, University of California, San Diego, La Jolla, California
| | - Gleb Martovetsky
- Departments of Pediatrics, Medicine, Cellular and Molecular Medicine, Bioengineering, and Family and Preventative Medicine, University of California, San Diego, La Jolla, California
| | - Sun-Young Ahn
- Departments of Pediatrics, Medicine, Cellular and Molecular Medicine, Bioengineering, and Family and Preventative Medicine, University of California, San Diego, La Jolla, California
| | - Henry C Liu
- Departments of Pediatrics, Medicine, Cellular and Molecular Medicine, Bioengineering, and Family and Preventative Medicine, University of California, San Diego, La Jolla, California
| | - Erin Richard
- Departments of Pediatrics, Medicine, Cellular and Molecular Medicine, Bioengineering, and Family and Preventative Medicine, University of California, San Diego, La Jolla, California
| | - Vibha Bhatnagar
- Departments of Pediatrics, Medicine, Cellular and Molecular Medicine, Bioengineering, and Family and Preventative Medicine, University of California, San Diego, La Jolla, California
| | - Wei Wu
- Departments of Pediatrics, Medicine, Cellular and Molecular Medicine, Bioengineering, and Family and Preventative Medicine, University of California, San Diego, La Jolla, California
| |
Collapse
|
68
|
Abstract
Multidrug resistance presents one of the most important causes of cancer treatment failure. Numerous in vitro and in vivo data have made it clear that multidrug resistance is frequently caused by enhanced expression of ATP-binding cassette (ABC) transporters. ABC transporters are membrane-bound proteins involved in cellular defense mechanisms, namely, in outward transport of xenobiotics and physiological substrates. Their function thus prevents toxicity as carcinogenesis on one hand but may contribute to the resistance of tumor cells to a number of drugs including chemotherapeutics on the other. Within 48 members of the human ABC superfamily there are several multidrug resistance-associated transporters. Due to the well documented susceptibility of numerous drugs to efflux via ABC transporters it is highly desirable to assess the status of ABC transporters for individualization of treatment by their substrates. The multidrug resistance associated protein 1 (MRP1) encoded by ABCC1 gene is one of the most studied ABC transporters. Despite the fact that its structure and functions have already been explored in detail, there are significant gaps in knowledge which preclude clinical applications. Tissue-specific patterns of expression and broad genetic variability make ABCC1/MRP1 an optimal candidate for use as a marker or member of multi-marker panel for prediction of chemotherapy resistance. The purpose of this review was to summarize investigations about associations of gene and protein expression and genetic variability with prognosis and therapy outcome of major cancers. Major advances in the knowledge have been identified and future research directions are highlighted.
Collapse
Affiliation(s)
- Tereza Kunická
- Department of Toxicogenomics, National Institute of Public Health , Prague , Czech Republic
| | | |
Collapse
|
69
|
Uhernik AL, Li L, LaVoy N, Velasquez MJ, Smith JP. Regulation of monocarboxylic acid transporter-1 by cAMP dependent vesicular trafficking in brain microvascular endothelial cells. PLoS One 2014; 9:e85957. [PMID: 24454947 PMCID: PMC3894203 DOI: 10.1371/journal.pone.0085957] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 12/03/2013] [Indexed: 01/23/2023] Open
Abstract
In this study, a detailed characterization of Monocarboxylic Acid Transporter-1 (Mct1) in cytoplasmic vesicles of cultured rat brain microvascular endothelial cells shows them to be a diverse population of endosomes intrinsic to the regulation of the transporter by a brief 25 to 30 minute exposure to the membrane permeant cAMP analog, 8Br-cAMP. The vesicles are heterogeneous in size, mobility, internal pH, and co-localize with discreet markers of particular types of endosomes including early endosomes, clathrin coated vesicles, caveolar vesicles, trans-golgi, and lysosomes. The vesicular localization of Mct1 was not dependent on its N or C termini, however, the size and pH of Mct1 vesicles was increased by deletion of either terminus demonstrating a role for the termini in vesicular trafficking of Mct1. Using a novel BCECF-AM based assay developed in this study, 8Br-cAMP was shown to decrease the pH of Mct1 vesicles after 25 minutes. This result and method were confirmed in experiments with a ratiometric pH-sensitive EGFP-mCherry dual tagged Mct1 construct. Overall, the results indicate that cAMP signaling reduces the functionality of Mct1 in cerebrovascular endothelial cells by facilitating its entry into a highly dynamic vesicular trafficking pathway that appears to lead to the transporter's trafficking to autophagosomes and lysosomes.
Collapse
Affiliation(s)
- Amy L. Uhernik
- Department of Biology, Colorado State University-Pueblo, Pueblo, Colorado, United States of America
| | - Lun Li
- Department of Biology, Colorado State University-Pueblo, Pueblo, Colorado, United States of America
| | - Nathan LaVoy
- Department of Biology, Colorado State University-Pueblo, Pueblo, Colorado, United States of America
| | - Micah J. Velasquez
- Department of Biology, Colorado State University-Pueblo, Pueblo, Colorado, United States of America
| | - Jeffrey P. Smith
- Department of Biology, Colorado State University-Pueblo, Pueblo, Colorado, United States of America
| |
Collapse
|
70
|
Fan J, de Lannoy IA. Pharmacokinetics. Biochem Pharmacol 2014; 87:93-120. [DOI: 10.1016/j.bcp.2013.09.007] [Citation(s) in RCA: 169] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 09/06/2013] [Accepted: 09/09/2013] [Indexed: 11/29/2022]
|
71
|
Tachikawa M, Uchida Y, Ohtsuki S, Terasaki T. Recent Progress in Blood–Brain Barrier and Blood–CSF Barrier Transport Research: Pharmaceutical Relevance for Drug Delivery to the Brain. DRUG DELIVERY TO THE BRAIN 2014. [DOI: 10.1007/978-1-4614-9105-7_2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
72
|
Johnson DH, Sutherland D, Acosta EP, Erdem H, Richardson D, Haas DW. Genetic and non-genetic determinants of raltegravir penetration into cerebrospinal fluid: a single arm pharmacokinetic study. PLoS One 2013; 8:e82672. [PMID: 24349334 PMCID: PMC3859605 DOI: 10.1371/journal.pone.0082672] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 10/25/2013] [Indexed: 01/11/2023] Open
Abstract
Background Antiretroviral drugs vary in their central nervous system penetration, with better penetration possibly conferring neurocognitive benefit during human immunodeficiency virus (HIV) therapy. The efflux transporter gene ABCB1 is expressed in the blood-brain barrier, and an ABCB1 variant (3435C→T) has been reported to affect ABCB1 expression. The integrase inhibitor raltegravir is a substrate for ABCB1. We examined whether ABCB1 3435C→T affects raltegravir disposition into cerebrospinal fluid (CSF), and explored associations with polymorphisms in other membrane transporter genes expressed in the blood-brain barrier. Methods Forty healthy, HIV-negative adults of European descent (20 homozygous for ABCB1 3435 C/C, 20 homozygous for 3435 T/T, each group divided equally between males and females) were given raltegravir 400 mg twice daily for 7 days. With the final dose, plasma was collected for pharmacokinetic analysis at 9 timepoints over 12 hours, and CSF collected 4 hours post dose. Results The 4-hour CSF concentration correlated more strongly with 2-hour (r2=0.76, P=1.12x10-11) than 4-hour (r2=0.47, P=6.89x10-6) single timepoint plasma concentration, and correlated strongly with partial plasma area-under-the-curve values (AUC0-4h r2=0.86, P=5.15x10-16). There was no significant association between ABCB1 3435C→T and ratios of CSF-to-plasma AUC or concentration (p>0.05 for each comparison). In exploratory analyses, CSF-to-plasma ratios were not associated with 276 polymorphisms across 16 membrane transporter genes. Conclusions Among HIV-negative adults, CSF raltegravir concentrations do not differ by ABCB1 3435C→T genotype but strongly correlate with plasma exposure. Trial Registration ClinicalTrials.gov NCT00729924 http://clinicaltrials.gov/show/NCT00729924
Collapse
Affiliation(s)
- Daniel H. Johnson
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Deborah Sutherland
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Edward P. Acosta
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Husamettin Erdem
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Danielle Richardson
- Center for Human Genetics Research, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - David W. Haas
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- Center for Human Genetics Research, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- * E-mail:
| |
Collapse
|
73
|
Kikuchi R, de Morais SM, Kalvass JC. In Vitro P-glycoprotein Efflux Ratio Can Predict the In Vivo Brain Penetration Regardless of Biopharmaceutics Drug Disposition Classification System Class. Drug Metab Dispos 2013; 41:2012-7. [DOI: 10.1124/dmd.113.053868] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
|
74
|
Sakamoto A, Matsumaru T, Yamamura N, Uchida Y, Tachikawa M, Ohtsuki S, Terasaki T. Quantitative expression of human drug transporter proteins in lung tissues: Analysis of regional, gender, and interindividual differences by liquid chromatography–tandem mass spectrometry. J Pharm Sci 2013; 102:3395-406. [DOI: 10.1002/jps.23606] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 04/22/2013] [Accepted: 04/23/2013] [Indexed: 12/30/2022]
|
75
|
Miyajima M, Kusuhara H, Takahashi K, Takashima T, Hosoya T, Watanabe Y, Sugiyama Y. Investigation of the effect of active efflux at the blood–brain barrier on the distribution of nonsteroidal aromatase inhibitors in the central nervous system. J Pharm Sci 2013; 102:3309-19. [DOI: 10.1002/jps.23600] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 04/21/2013] [Accepted: 04/23/2013] [Indexed: 12/25/2022]
|
76
|
Nanotechnology-Based Drug Delivery Systems for Targeting, Imaging and Diagnosis of Neurodegenerative Diseases. Pharm Res 2013; 30:2499-511. [DOI: 10.1007/s11095-013-1156-7] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Accepted: 07/22/2013] [Indexed: 12/26/2022]
|
77
|
Hutter V, Chau DYS, Hilgendorf C, Brown A, Cooper A, Zann V, Pritchard DI, Bosquillon C. Digoxin net secretory transport in bronchial epithelial cell layers is not exclusively mediated by P-glycoprotein/MDR1. Eur J Pharm Biopharm 2013; 86:74-82. [PMID: 23816640 DOI: 10.1016/j.ejpb.2013.06.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 05/24/2013] [Accepted: 06/10/2013] [Indexed: 01/05/2023]
Abstract
The impact of P-glycoprotein (MDR1, ABCB1) on drug disposition in the lungs as well as its presence and activity in in vitro respiratory drug absorption models remain controversial to date. Hence, we characterised MDR1 expression and the bidirectional transport of the common MDR1 probe (3)H-digoxin in air-liquid interfaced (ALI) layers of normal human bronchial epithelial (NHBE) cells and of the Calu-3 bronchial epithelial cell line at different passage numbers. Madin-Darby Canine Kidney (MDCKII) cells transfected with the human MDR1 were used as positive controls. (3)H-digoxin efflux ratio (ER) was low and highly variable in NHBE layers. In contrast, ER=11.4 or 3.0 were measured in Calu-3 layers at a low or high passage number, respectively. These were, however, in contradiction with increased MDR1 protein levels observed upon passaging. Furthermore, ATP depletion and the two MDR1 inhibitory antibodies MRK16 and UIC2 had no or only a marginal impact on (3)H-digoxin net secretory transport in the cell line. Our data do not support an exclusive role of MDR1 in (3)H-digoxin apparent efflux in ALI Calu-3 layers and suggest the participation of an ATP-independent carrier. Identification of this transporter might provide a better understanding of drug distribution in the lungs.
Collapse
Affiliation(s)
- Victoria Hutter
- Division of Drug Delivery and Tissue Engineering, School of Pharmacy, University of Nottingham, UK
| | - David Y S Chau
- Allergy Research Group, School of Molecular Medical Sciences, University of Nottingham, UK
| | | | - Alan Brown
- Immune Modulation Group, Division of Molecular and Cellular Science, School of Pharmacy, University of Nottingham, UK
| | | | | | - David I Pritchard
- Immune Modulation Group, Division of Molecular and Cellular Science, School of Pharmacy, University of Nottingham, UK
| | - Cynthia Bosquillon
- Division of Drug Delivery and Tissue Engineering, School of Pharmacy, University of Nottingham, UK.
| |
Collapse
|
78
|
Seabrooke S, O'Donnell MJ. Oatp58Dc contributes to blood-brain barrier function by excluding organic anions from the Drosophila brain. Am J Physiol Cell Physiol 2013; 305:C558-67. [PMID: 23804204 DOI: 10.1152/ajpcell.00408.2012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The blood-brain barrier (BBB) physiologically isolates the brain from the blood and, thus, plays a vital role in brain homeostasis. Ion transporters play a critical role in this process by effectively regulating access of chemicals to the brain. Organic anion-transporting polypeptides (Oatps) transport a wide range of amphipathic substrates and are involved in efflux of chemicals across the vertebrate BBB. The anatomic complexity of the vascularized vertebrate BBB, however, creates challenges for experimental analysis of these processes. The less complex structure of the Drosophila BBB facilitates measurement of solute transport. Here we investigate a physiological function for Oatp58Dc in transporting small organic anions across the BBB. We used genetic manipulation, immunocytochemistry, and molecular techniques to supplement a whole animal approach to study the BBB. For this whole animal approach, the traceable small organic anion fluorescein was injected into the hemolymph. This research shows that Oatp58Dc is involved in maintaining a chemical barrier against fluorescein permeation into the brain. Oatp58Dc expression was found in the perineurial and subperineurial glia, as well as in postmitotic neurons. We specifically targeted knockdown of Oatp58Dc expression in the perineurial and subperineurial glia to reveal that Oatp58Dc expression in the perineurial glia is necessary to maintain the barrier against fluorescein influx into the brain. Our results show that Oatp58Dc contributes to maintenance of a functional barrier against fluorescein influx past the BBB into the brain.
Collapse
Affiliation(s)
- Sara Seabrooke
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | | |
Collapse
|
79
|
Marzolini C, Mueller R, Li-Blatter X, Battegay M, Seelig A. The Brain Entry of HIV-1 Protease Inhibitors Is Facilitated When Used in Combination. Mol Pharm 2013; 10:2340-9. [DOI: 10.1021/mp300712a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Catia Marzolini
- Division of Infectious Diseases
and Hospital Epidemiology, University Hospital of Basel, Basel, Switzerland
| | - Rita Mueller
- Biophysical Chemistry, Biozentrum,
University of Basel, Basel, Switzerland
| | | | - Manuel Battegay
- Division of Infectious Diseases
and Hospital Epidemiology, University Hospital of Basel, Basel, Switzerland
| | - Anna Seelig
- Biophysical Chemistry, Biozentrum,
University of Basel, Basel, Switzerland
| |
Collapse
|
80
|
Lin F, Marchetti S, Pluim D, Iusuf D, Mazzanti R, Schellens JHM, Beijnen JH, van Tellingen O. Abcc4 together with abcb1 and abcg2 form a robust cooperative drug efflux system that restricts the brain entry of camptothecin analogues. Clin Cancer Res 2013; 19:2084-95. [PMID: 23461902 DOI: 10.1158/1078-0432.ccr-12-3105] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
PURPOSE Multidrug resistance-associated protein 4 (ABCC4) shares many features with P-glycoprotein (ABCB1) and breast cancer resistance protein (ABCG2), including broad substrate affinity and expression at the blood-brain barrier (BBB). However, the pharmacologic relevance of ABCC4 at the BBB is difficult to evaluate, as most drugs are also substrates of ABCB1 and/or ABCG2. EXPERIMENTAL DESIGN We have created a mouse strain in which all these alleles are inactivated to assess their impact on brain delivery of camptothecin analogues, an important class of antineoplastic agents and substrates of these transporters. Wild-type (WT), Abcg2(-/-), Abcb1a/b(-/-), Abcc4(-/-), Abcb1a/b;Abcg2(-/-), Abcg2;Abcc4(-/-), and Abcb1a/b;Abcg2;Abcc4(-/-) mice received i.v. topotecan, irinotecan, SN-38, or gimatecan alone or with concomitant oral elacridar. Drug levels were analyzed by high-performance liquid chromatography (HPLC). RESULTS We found that additional deficiency of Abcc4 in Abcb1a/b;Abcg2(-/-) mice significantly increased the brain concentration of all camptothecin analogues by 1.2-fold (gimatecan) to 5.8-fold (SN-38). The presence of Abcb1a/b or Abcc4 alone was sufficient to reduce the brain concentration of SN-38 to the level in WT mice. Strikingly, the brain distribution of gimatecan in brain of WT mice was more than 220- and 40-fold higher than that of SN-38 and topotecan, respectively. CONCLUSION Abcc4 limits the brain penetration of camptothecin analogues and teams up with Abcb1a/b and Abcg2 to form a robust cooperative drug efflux system. This concerted action limits the usefulness of selective ABC transport inhibitors to enhance drug entry for treatment of intracranial diseases. Our results also suggest that gimatecan might be a better candidate than irinotecan for clinical evaluation against intracranial tumors.
Collapse
Affiliation(s)
- Fan Lin
- Department of Clinical Chemistry/Preclinical Pharmacology, The Netherlands Cancer Institute/Slotervaart Hospital, EC Amsterdam, The Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
81
|
Bly MJ, Bishop JR, Thomas KLH, Ellingrod VL. P-glycoprotein (PGP) polymorphisms and sexual dysfunction in female patients with depression and SSRI-associated sexual side effects. JOURNAL OF SEX & MARITAL THERAPY 2013; 39:280-288. [PMID: 23356581 PMCID: PMC3807815 DOI: 10.1080/0092623x.2011.615896] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Sexual dysfunction is common with selective serotonin reuptake inhibitor use for major depressive disorder. Studies have shown associations between genetic variation in the adenosine triphosphate (ATP)-binding cassette, subfamily B, member 1 gene (ABCB1), which encodes the drug efflux transporter P-glycoprotein (PGP), and selective serotonin reuptake inhibitor response. This study measured functionally implicated ABCB1 variants (rs2235015, rs1128503, rs2032582, and rs1045642) and sexual dysfunction using the Changes in Sexual Functioning Questionnaire. This study included outpatients (18-40 years of age) treated for major depressive disorder with a selective serotonin reuptake inhibitor for 6 weeks. Changes in Sexual Functioning Questionnaire outcomes were stratified by ABCB1 genotype and PGP substrate status. The authors recruited 82 individuals (22 men and 57 women). Women receiving a PGP substrate with a rs1128503 TT genotype had a significantly lower Changes in Sexual Functioning Questionnaire total score (37.2 ± 5.4), indicating greater sexual dysfunction, than did those with the CT (42.9 ± 6.3) or CC genotypes (46.6 ± 5.6), F(2) = 6.00, p = .005, p = .02, with multiple testing correction. The results indicate a relationship between genotypes at rs1128503, total sexual dysfunction, and PGP substrates use for women and may explain some of the sexual dysfunction variability seen with selective serotonin reuptake inhibitor treatment. Results need to be confirmed with a larger sample size that includes men.
Collapse
Affiliation(s)
- Michael J Bly
- College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA
| | | | | | | |
Collapse
|
82
|
|
83
|
Caffo M, Barresi V, Caruso G, Cutugno M, La Fata G, Venza M, Alafaci C, Tomasello F. Innovative therapeutic strategies in the treatment of brain metastases. Int J Mol Sci 2013; 14:2135-74. [PMID: 23340652 PMCID: PMC3565370 DOI: 10.3390/ijms14012135] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Revised: 01/08/2013] [Accepted: 01/09/2013] [Indexed: 12/29/2022] Open
Abstract
Brain metastases (BM) are the most common intracranial tumors and their incidence is increasing. Untreated brain metastases are associated with a poor prognosis and a poor performance status. Metastasis development involves the migration of a cancer cell from the bulk tumor into the surrounding tissue, extravasation from the blood into tissue elsewhere in the body, and formation of a secondary tumor. In the recent past, important results have been obtained in the management of patients affected by BM, using surgery, radiation therapy, or both. Conventional chemotherapies have generally produced disappointing results, possibly due to their limited ability to penetrate the blood-brain barrier. The advent of new technologies has led to the discovery of novel molecules and pathways that have better depicted the metastatic process. Targeted therapies such as bevacizumab, erlotinib, gefitinib, sunitinib and sorafenib, are all licensed and have demonstrated improved survival in patients with metastatic disease. In this review, we will report current data on targeted therapies. A brief review about brain metastatic process will be also presented.
Collapse
Affiliation(s)
- Maria Caffo
- Department of Neurosciences, School of Medicine, University of Messina, A.O.U. Policlinico “G. Martino”, via Consolare Valeria, 1, 98125 Messina, Italy; E-Mails: (M.C.); (M.C.); (G.L.F.); (M.V.); (C.A.); (F.T.)
| | - Valeria Barresi
- Department of Human Pathology, School of Medicine, University of Messina, A.O.U. Policlinico “G. Martino”, via Consolare Valeria, 1, 98125 Messina, Italy; E-Mail:
| | - Gerardo Caruso
- Department of Neurosciences, School of Medicine, University of Messina, A.O.U. Policlinico “G. Martino”, via Consolare Valeria, 1, 98125 Messina, Italy; E-Mails: (M.C.); (M.C.); (G.L.F.); (M.V.); (C.A.); (F.T.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +39-090-2217167; Fax: +39-090-693714
| | - Mariano Cutugno
- Department of Neurosciences, School of Medicine, University of Messina, A.O.U. Policlinico “G. Martino”, via Consolare Valeria, 1, 98125 Messina, Italy; E-Mails: (M.C.); (M.C.); (G.L.F.); (M.V.); (C.A.); (F.T.)
| | - Giuseppe La Fata
- Department of Neurosciences, School of Medicine, University of Messina, A.O.U. Policlinico “G. Martino”, via Consolare Valeria, 1, 98125 Messina, Italy; E-Mails: (M.C.); (M.C.); (G.L.F.); (M.V.); (C.A.); (F.T.)
| | - Mario Venza
- Department of Neurosciences, School of Medicine, University of Messina, A.O.U. Policlinico “G. Martino”, via Consolare Valeria, 1, 98125 Messina, Italy; E-Mails: (M.C.); (M.C.); (G.L.F.); (M.V.); (C.A.); (F.T.)
| | - Concetta Alafaci
- Department of Neurosciences, School of Medicine, University of Messina, A.O.U. Policlinico “G. Martino”, via Consolare Valeria, 1, 98125 Messina, Italy; E-Mails: (M.C.); (M.C.); (G.L.F.); (M.V.); (C.A.); (F.T.)
| | - Francesco Tomasello
- Department of Neurosciences, School of Medicine, University of Messina, A.O.U. Policlinico “G. Martino”, via Consolare Valeria, 1, 98125 Messina, Italy; E-Mails: (M.C.); (M.C.); (G.L.F.); (M.V.); (C.A.); (F.T.)
| |
Collapse
|
84
|
Li L, Agarwal S, Elmquist WF. Brain efflux index to investigate the influence of active efflux on brain distribution of pemetrexed and methotrexate. Drug Metab Dispos 2013; 41:659-67. [PMID: 23297298 DOI: 10.1124/dmd.112.049254] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Antifolates, in particular methotrexate (MTX), have been widely used in the treatment of primary and secondary tumors of the central nervous system (CNS). Pemetrexed (PMX) is a novel antifolate that also exhibits potent antitumor activity against CNS malignancies. Studies have shown that brain distribution of both antifolates is significantly restricted, possible due to active efflux transport at the blood-brain barrier (BBB). This study characterizes the brain-to-blood transport of PMX and MTX and examines the role of several efflux transporters in brain distribution of the antifolates by use of the intracerebral microinjection technique (brain efflux index). The results from this study show that both PMX and MTX undergo saturable efflux transport across the BBB, with elimination half-lives of approximately 39 minutes and 29 minutes, respectively. Of the various efflux transporters this study investigated, multidrug resistance-associated protein 2 (Mrp2) does not play an important role in the brain distribution of the two antifolate drugs. Interestingly, breast-cancer resistance protein (Bcrp) makes a significant contribution to the brain elimination of MTX but not PMX. In addition, the brain-to-blood transport of both antifolates was inhibited by probenecid and benzylpenicillin, suggesting the involvement of organic anion transporters in the efflux of these compounds from the brain, with organic anion transporter 3 (Oat3) being a possibility. Our results suggest that one of the underlying mechanisms behind the limited brain distribution of PMX and MTX is active efflux transport processes at the BBB, including a benzylpenicillin-sensitive transport system and/or the active transporter Bcrp.
Collapse
Affiliation(s)
- Li Li
- Department of Pharmaceutics, Brain Barriers Research Center, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | | |
Collapse
|
85
|
The promiscuous binding of pharmaceutical drugs and their transporter-mediated uptake into cells: what we (need to) know and how we can do so. Drug Discov Today 2012. [PMID: 23207804 DOI: 10.1016/j.drudis.2012.11.008] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A recent paper in this journal sought to counter evidence for the role of transport proteins in effecting drug uptake into cells, and questions that transporters can recognize drug molecules in addition to their endogenous substrates. However, there is abundant evidence that both drugs and proteins are highly promiscuous. Most proteins bind to many drugs and most drugs bind to multiple proteins (on average more than six), including transporters (mutations in these can determine resistance); most drugs are known to recognise at least one transporter. In this response, we alert readers to the relevant evidence that exists or is required. This needs to be acquired in cells that contain the relevant proteins, and we highlight an experimental system for simultaneous genome-wide assessment of carrier-mediated uptake in a eukaryotic cell (yeast).
Collapse
|
86
|
Abstract
Multidrug resistance P-glycoprotein (P-gp; also known as MDR1 and ABCB1) is expressed in the luminal membrane of the small intestine and blood-brain barrier, and the apical membranes of excretory cells such as hepatocytes and kidney proximal tubule epithelia. P-gp regulates the absorption and elimination of a wide range of compounds, such as digoxin, paclitaxel, HIV protease inhibitors and psychotropic drugs. Its substrate specificity is as broad as that of cytochrome P450 (CYP) 3A4, which encompasses up to 50 % of the currently marketed drugs. There has been considerable interest in variations in the ABCB1 gene as predictors of the pharmacokinetics and/or treatment outcomes of several drug classes, including antidepressants and antipsychotics. Moreover, P-gp-mediated transport activity is saturable, and is subject to modulation by inhibition and induction, which can affect the pharmacokinetics, efficacy or safety of P-gp substrates. In addition, many of the P-gp substrates overlap with CYP3A4 substrates, and several psychotropic drugs that are P-gp substrates are also CYP3A4 substrates. Therefore, psychotropic drugs that are P-gp substrates may cause a drug interaction when P-gp inhibitors and inducers are coadministered, or when psychotropic drugs or other medicines that are P-gp substrates are added to a prescription. Hence, it is clinically important to accumulate data about drug interactions through studies on P-gp, in addition to CYP3A4, to assist in the selection of appropriate psychotropic medications and in avoiding inappropriate combinations of therapeutic agents. There is currently insufficient information available on the psychotropic drug interactions related to P-gp, and therefore we summarize the recent clinical data in this review.
Collapse
Affiliation(s)
- Yumiko Akamine
- Department of Hospital Pharmacy, University of the Ryukyus, Nishihara-cho, Okinawa, Japan
| | | | | | | |
Collapse
|
87
|
Yousif S, Chaves C, Potin S, Margaill I, Scherrmann JM, Declèves X. Induction of P-glycoprotein and Bcrp at the rat blood-brain barrier following a subchronic morphine treatment is mediated through NMDA/COX-2 activation. J Neurochem 2012; 123:491-503. [PMID: 22845665 DOI: 10.1111/j.1471-4159.2012.07890.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 07/07/2012] [Accepted: 07/25/2012] [Indexed: 01/23/2023]
Abstract
Subchronic morphine treatment induces P-glycoprotein (P-gp) up-regulation at the blood-brain barrier. This study investigates the rate and extent to which P-gp and breast cancer-resistance protein (Bcrp) increase at the rat blood-brain barrier following subchronic morphine treatment. Rats were given increasing doses of morphine (10-40 mg/kg) or saline i.p. twice daily for 5 days. The brain cortex large vessels and microvessels were then mechanical isolated 6, 9, 12, 24, and 36 h after the last injection. The gene and protein expression of P-gp and Bcrp in morphine-treated and control rats were compared by qRT-PCR and western blotting. The levels of Mdr1a and Bcrp mRNAs were not significantly modified 6 h post morphine, but the Mdr1a mRNA increased 1.4-fold and Bcrp mRNA 2.4-fold at 24 h. P-gp and Bcrp protein expression in brain microvessels was unchanged 6 h post morphine and increased 1.5-fold at 24 h. This effect was more pronounced in large vessels than in microvessels. However, extracellular morphine concentrations of 0.01-10 μM did not modify the expressions of the MDR1 and BCRP genes in hCMEC/D3 human endothelial brain cells in vitro. MK-801 (NMDA antagonist) and meloxicam (cyclo-oxygenase-2 inhibitor) given after morphine treatment completely blocked P-gp and Bcrp up-regulation. Interestingly, misoprostol and iloprost, two well-known agonists of prostaglandin E2 receptors induced both MDR1 and BCRP mRNA levels in hCMEC/D3. Thus, morphine does not directly stimulate P-gp and Bcrp expression by the brain endothelium, but glutamate released during morphine withdrawal may do so by activating the NMDA/cyclo-oxygenase-2 cascade.
Collapse
Affiliation(s)
- Salah Yousif
- CNRS, UMR 8206, Neuropsychopharmacologie des addictions, Faculté des Sciences Pharmaceutiques et Biologiques, Université Paris Descartes, Paris, France
| | | | | | | | | | | |
Collapse
|
88
|
Intranasal administration of nanostructured lipid carriers containing CNS acting drug: pharmacodynamic studies and estimation in blood and brain. J Psychiatr Res 2012; 46:1133-8. [PMID: 22749490 DOI: 10.1016/j.jpsychires.2012.05.014] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 05/17/2012] [Accepted: 05/25/2012] [Indexed: 12/26/2022]
Abstract
The present study was aimed to investigate and compare the efficacy of duloxetine (DLX) loaded nanostructured lipid carriers (NLC) with DLX solution pharmacodynamically following intranasal administration. The study was further conducted to estimate DLX concentration in brain and blood. DLX was administered to albino Wistar rats either intranasally or orally in solution form (DLX solution) or encapsulated in NLC (DLX-NLC). These were evaluated in-vivo for pharmacodynamic studies for depression by forced swimming test and locomotor activity test. Intranasal DLX-NLC treatment exhibited improved behavioural analysis results (swimming, climbing, and immobility) than the DLX solution after 24 h of study. Furthermore, DLX-NLC significantly increased the total swimming and climbing time when compared with control and significantly reduced the immobility period. The intranasal DLX-NLC demonstrated improved locomotor activity when compared with DLX solution. Amount of DLX was quantified in blood and brain after the forced swimming test. The intranasal DLX-NLC demonstrated higher concentration in brain compared with DLX solution. Thus, intranasal DLX-NLC was found to be a promising formulation for the treatment of depression.
Collapse
|
89
|
Watanabe K, Nishimura Y, Nomoto T, Umemoto N, Zhang Z, Zhang B, Kuroyanagi J, Shimada Y, Shintou T, Okano M, Miyazaki T, Imamura T, Tanaka T. In vivo assessment of the permeability of the blood-brain barrier and blood-retinal barrier to fluorescent indoline derivatives in zebrafish. BMC Neurosci 2012; 13:101. [PMID: 22894547 PMCID: PMC3807752 DOI: 10.1186/1471-2202-13-101] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Accepted: 08/10/2012] [Indexed: 01/05/2023] Open
Abstract
Background Successful delivery of compounds to the brain and retina is a challenge in the development of therapeutic drugs and imaging agents. This challenge arises because internalization of compounds into the brain and retina is restricted by the blood–brain barrier (BBB) and blood-retinal barrier (BRB), respectively. Simple and reliable in vivo assays are necessary to identify compounds that can easily cross the BBB and BRB. Methods We developed six fluorescent indoline derivatives (IDs) and examined their ability to cross the BBB and BRB in zebrafish by in vivo fluorescence imaging. These fluorescent IDs were administered to live zebrafish by immersing the zebrafish larvae at 7-8 days post fertilization in medium containing the ID, or by intracardiac injection. We also examined the effect of multidrug resistance proteins (MRPs) on the permeability of the BBB and BRB to the ID using MK571, a selective inhibitor of MRPs. Results The permeability of these barriers to fluorescent IDs administered by simple immersion was comparable to when administered by intracardiac injection. Thus, this finding supports the validity of drug administration by simple immersion for the assessment of BBB and BRB permeability to fluorescent IDs. Using this zebrafish model, we demonstrated that the length of the methylene chain in these fluorescent IDs significantly affected their ability to cross the BBB and BRB via MRPs. Conclusions We demonstrated that in vivo assessment of the permeability of the BBB and BRB to fluorescent IDs could be simply and reliably performed using zebrafish. The structure of fluorescent IDs can be flexibly modified and, thus, the permeability of the BBB and BRB to a large number of IDs can be assessed using this zebrafish-based assay. The large amount of data acquired might be useful for in silico analysis to elucidate the precise mechanisms underlying the interactions between chemical structure and the efflux transporters at the BBB and BRB. In turn, understanding these mechanisms may lead to the efficient design of compounds targeting the brain and retina.
Collapse
Affiliation(s)
- Kohei Watanabe
- Corporate R&D Headquarters, Canon Inc Tokyo, Ohta-ku, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
90
|
Stieger B, Meier PJ. Pharmacogenetics of drug transporters in the enterohepatic circulation. Pharmacogenomics 2012; 12:611-31. [PMID: 21619426 DOI: 10.2217/pgs.11.53] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
This article summarizes the impact of the pharmacogenetics of drug transporters expressed in the enterohepatic circulation on the pharmacokinetics and pharmacodynamics of drugs. The role of pharmacogenetics in the function of drug transporter proteins in vitro is now well established and evidence is rapidly accumulating from in vivo pharmacokinetic studies, which suggests that genetic variants of drug transporter proteins can translate into clinically relevant phenotypes. However, a large amount of conflicting information on the clinical relevance of drug transporter proteins has so far precluded the emergence of a clear picture regarding the role of drug transporter pharmacogenetics in medical practice. This is very well exemplified by the case of P-glycoprotein (MDR1, ABCB1). The challenge is now to develop pharmacogenetic models with sufficient predictive power to allow for translation into drug therapy. This will require a combination of pharmacogenetics of drug transporters, drug metabolism and pharmacodynamics of the respective drugs.
Collapse
Affiliation(s)
- Bruno Stieger
- Division of Clinical Pharmacology & Toxicology, University Hospital, 8091 Zurich, Switzerland
| | | |
Collapse
|
91
|
Spiro AS, Wong A, Boucher AA, Arnold JC. Enhanced brain disposition and effects of Δ9-tetrahydrocannabinol in P-glycoprotein and breast cancer resistance protein knockout mice. PLoS One 2012; 7:e35937. [PMID: 22536451 PMCID: PMC3335007 DOI: 10.1371/journal.pone.0035937] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Accepted: 03/26/2012] [Indexed: 01/16/2023] Open
Abstract
The ABC transporters P-glycoprotein (P-gp, Abcb1) and breast cancer resistance protein (Bcrp, Abcg2) regulate the CNS disposition of many drugs. The main psychoactive constituent of cannabis Δ(9)-tetrahydrocannabinol (THC) has affinity for P-gp and Bcrp, however it is unknown whether these transporters modulate the brain accumulation of THC and its functional effects on the CNS. Here we aim to show that mice devoid of Abcb1 and Abcg2 retain higher brain THC levels and are more sensitive to cannabinoid-induced hypothermia than wild-type (WT) mice. Abcb1a/b (-/-), Abcg2 (-/-) and wild-type (WT) mice were injected with THC before brain and blood were collected and THC concentrations determined. Another cohort of mice was examined for THC-induced hypothermia by measuring rectal body temperature. Brain THC concentrations were higher in both Abcb1a/b (-/-) and Abcg2 (-/-) mice than WT mice. ABC transporter knockout mice exhibited delayed elimination of THC from the brain with the effect being more prominent in Abcg2 (-/-) mice. ABC transporter knockout mice were more sensitive to THC-induced hypothermia compared to WT mice. These results show P-gp and Bcrp prolong the brain disposition and hypothermic effects of THC and offer a novel mechanism for both genetic vulnerability to the psychoactive effects of cannabis and drug interactions between CNS therapies and cannabis.
Collapse
Affiliation(s)
- Adena S. Spiro
- Discipline of Pharmacology, University of Sydney, Sydney, New South Wales, Australia
| | - Alexander Wong
- Discipline of Pharmacology, University of Sydney, Sydney, New South Wales, Australia
| | | | - Jonathon C. Arnold
- Discipline of Pharmacology, University of Sydney, Sydney, New South Wales, Australia
- Brain and Mind Research Institute, Sydney, New South Wales, Australia
- Schizophrenia Research Institute, Darlinghurst, Sydney, Australia
- * E-mail:
| |
Collapse
|
92
|
Hutson JR, Weitzman S, Schechter T, Arceci RJ, Kim RB, Finkelstein Y. Pharmacokinetic and pharmacogenetic determinants and considerations in chemotherapy selection and dosing in infants. Expert Opin Drug Metab Toxicol 2012; 8:709-22. [PMID: 22509821 DOI: 10.1517/17425255.2012.680884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
INTRODUCTION There is a lack of high-quality data regarding optimal chemotherapy dosage regimens among infants. Dosing regimens for chemotherapy during the first year of life are commonly based on empiric recommendations extrapolated from older children; however, balancing efficacy and toxicity is critical as severe adverse drug reactions may lead to treatment failure or reduced adherence to needed medications. AREAS COVERED This review describes pharmacokinetic and pharmacogenetic considerations when administering chemotherapeutic agents to infants. Examples of commonly used agents are provided with practical recommendations for dosing adjustments. EXPERT OPINION Optimal chemotherapy for children and infants in particular has lagged behind the remarkable progress in cancer treatment and it is clear that far more basic and clinical research are needed with respect to the mechanistic basis of age-dependent differences in pharmacokinetic parameters. More recent studies which have combined pharmacokinetic data with clinical toxicity and outcome data have resulted in a number of more evidence-based guidelines at least for the initial chemotherapy dosing; however, at present, the dosing of chemotherapy drugs in neonates and infants remains largely empiric.
Collapse
Affiliation(s)
- Janine R Hutson
- University of Toronto, Division of Clinical Pharmacology and Toxicology, Hospital for Sick Children, 555 University Ave, Toronto ON, M5G 1X8, Canada
| | | | | | | | | | | |
Collapse
|
93
|
Merola VM, Eubig PA. Toxicology of avermectins and milbemycins (macrocylic lactones) and the role of P-glycoprotein in dogs and cats. Vet Clin North Am Small Anim Pract 2012; 42:313-33, vii. [PMID: 22381182 DOI: 10.1016/j.cvsm.2011.12.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The macrocyclic lactones (MLs) are parasiticides able to kill a wide variety of arthropods and nematodes. They have a high margin of safety for labeled indications, and ivermectin has become the best-selling antiparasitic in the world. Dogs of certain breeds and mixtures of those breeds have a defect in the ABCB1 gene (formerly MDR1 gene) that results in a lack of functional P-glycoprotein, which leads to accumulation of the MLs in the central nervous system and a higher risk of adverse effects when exposed. There is no specific antidote for ML toxicosis so the most important part of treatment is good supportive care.
Collapse
Affiliation(s)
- Valentina M Merola
- ASPCA Animal Poison Control Center, 1717 South Philo Road, Suite 36, Urbana, IL 61802, USA.
| | | |
Collapse
|
94
|
O'Brien FE, Dinan TG, Griffin BT, Cryan JF. Interactions between antidepressants and P-glycoprotein at the blood-brain barrier: clinical significance of in vitro and in vivo findings. Br J Pharmacol 2012; 165:289-312. [PMID: 21718296 DOI: 10.1111/j.1476-5381.2011.01557.x] [Citation(s) in RCA: 138] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The drug efflux pump P-glycoprotein (P-gp) plays an important role in the function of the blood-brain barrier by selectively extruding certain endogenous and exogenous molecules, thus limiting the ability of its substrates to reach the brain. Emerging evidence suggests that P-gp may restrict the uptake of several antidepressants into the brain, thus contributing to the poor success rate of current antidepressant therapies. Despite some inconsistency in the literature, clinical investigations of potential associations between functional single nucleotide polymorphisms in ABCB1, the gene which encodes P-gp, and antidepressant response have highlighted a potential link between P-gp function and treatment-resistant depression (TRD). Therefore, co-administration of P-gp inhibitors with antidepressants to patients who are refractory to antidepressant therapy may represent a novel therapeutic approach in the management of TRD. Furthermore, certain antidepressants inhibit P-gp in vitro, and it has been hypothesized that inhibition of P-gp by such antidepressant drugs may play a role in their therapeutic action. The present review summarizes the available in vitro, in vivo and clinical data pertaining to interactions between antidepressant drugs and P-gp, and discusses the potential relevance of these interactions in the treatment of depression.
Collapse
Affiliation(s)
- Fionn E O'Brien
- Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland
| | | | | | | |
Collapse
|
95
|
Krajcsi P, Jani M, Tóth B, Erdő F, Kis E, Beéry E, Sziráki I. Efflux transporters in the blood–brain interfaces –in vitroandin vivomethods and correlations. Expert Opin Drug Metab Toxicol 2012; 8:419-31. [DOI: 10.1517/17425255.2012.668184] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
96
|
Korzekwa KR, Nagar S, Tucker J, Weiskircher EA, Bhoopathy S, Hidalgo IJ. Models to Predict Unbound Intracellular Drug Concentrations in the Presence of Transporters. Drug Metab Dispos 2012; 40:865-76. [DOI: 10.1124/dmd.111.044289] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
|
97
|
Brainpeps: the blood-brain barrier peptide database. Brain Struct Funct 2011; 217:687-718. [PMID: 22205159 DOI: 10.1007/s00429-011-0375-0] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 12/12/2011] [Indexed: 01/13/2023]
Abstract
Peptides are able to cross the blood-brain barrier (BBB) through various mechanisms, opening new diagnostic and therapeutic avenues. However, their BBB transport data are scattered in the literature over different disciplines, using different methodologies reporting different influx or efflux aspects. Therefore, a comprehensive BBB peptide database (Brainpeps) was constructed to collect the BBB data available in the literature. Brainpeps currently contains BBB transport information with positive as well as negative results. The database is a useful tool to prioritize peptide choices for evaluating different BBB responses or studying quantitative structure-property (BBB behaviour) relationships of peptides. Because a multitude of methods have been used to assess the BBB behaviour of compounds, we classified these methods and their responses. Moreover, the relationships between the different BBB transport methods have been clarified and visualized.
Collapse
|
98
|
Iusuf D, van de Steeg E, Schinkel AH. Functions of OATP1A and 1B transporters in vivo: insights from mouse models. Trends Pharmacol Sci 2011; 33:100-8. [PMID: 22130008 DOI: 10.1016/j.tips.2011.10.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 10/12/2011] [Accepted: 10/14/2011] [Indexed: 01/16/2023]
Abstract
Organic anion-transporting polypeptides (OATPs) are a superfamily of uptake transporters that mediate the cellular uptake of a broad range of endogenous and exogenous compounds. Of these OATP transporters, members of the 1A and 1B subfamilies have broad substrate specificities. Because they are mainly expressed in liver, kidney and small intestine, OATP1A and 1B transporters can have a major impact on the pharmacokinetics of many drugs. To study their role in physiology and drug disposition, several mouse models lacking functional expression of one or more OATPs have been generated. This review discusses recent findings for these models that have led to new insights into the impact of OATP1A and 1B transporters on pharmacokinetics and toxicokinetics, and on bilirubin detoxification and bile acid handling in normal liver physiology.
Collapse
Affiliation(s)
- Dilek Iusuf
- Division of Molecular Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | | | | |
Collapse
|
99
|
Keep RF, Smith DE. Choroid plexus transport: gene deletion studies. Fluids Barriers CNS 2011; 8:26. [PMID: 22053861 PMCID: PMC3231976 DOI: 10.1186/2045-8118-8-26] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 11/04/2011] [Indexed: 11/26/2022] Open
Abstract
This review examines the use of transporter knockout (KO) animals to evaluate transporter function at the choroid plexus (the blood-CSF barrier; BCSFB). Compared to the blood-brain barrier, there have been few such studies on choroid plexus (CP) function. These have primarily focused on Pept2 (an oligopeptide transporter), ATP-binding cassette (ABC) transporters, Oat3 (an organic anion transporter), Svct2 (an ascorbic acid transporter), transthyretin, ion transporters, and ion and water channels. This review focuses on the knowledge gained from such studies, both with respect to specific transporters and in general to the role of the CP and its impact on brain parenchyma. It also discusses the pros and cons of using KO animals in such studies and the technical approaches that can be used.
Collapse
Affiliation(s)
- Richard F Keep
- Department of Neurosurgery, R5018 BSRB, University of Michigan, Ann Arbor, Michigan 48109-2200, USA.
| | | |
Collapse
|
100
|
Kotthaus J, Kotthaus J, Schade D, Schwering U, Hungeling H, Müller-Fielitz H, Raasch W, Clement B. New prodrugs of the antiprotozoal drug pentamidine. ChemMedChem 2011; 6:2233-42. [PMID: 21984033 DOI: 10.1002/cmdc.201100422] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Indexed: 12/23/2022]
Abstract
Pentamidine is an effective antimicrobial agent that is approved for the treatment of African trypanosomiasis but suffers from poor oral bioavailability and central nervous system (CNS) penetration. This work deals with the development and systematic characterisation of new prodrugs of pentamidine. For this reason, numerous prodrugs that use different prodrug principles were synthesised and examined in vitro and in vivo. Another objective of the study was the determination of permeability of the different pentamidine prodrugs. While some of the prodrug principles applied in this study are known, such as the conversion of the amidine functions into amidoximes or the O-alkylation of amidoximes with a carboxymethyl residue, others were developed more recently and are described here for the first time. These newly developed methods aim to increase the affinity of the prodrug for the transporters and mediate an active uptake via carrier systems by conjugation of amidoximes with compounds that improve the overall solubility of the prodrug. The different principles chosen resulted in several pentamidine prodrugs with various advantages. The objective of this investigation was the systematic characterisation and evaluation of eight pentamidine prodrugs in order to identify the most appropriate strategy to improve the properties of the parent drug. For this reason, all prodrugs were examined with respect to their solubility, stability, enzymatic activation, distribution, CNS delivery, and oral bioavailability. The results of this work have allowed reliable conclusions to be drawn regarding the best prodrug principle for the antiprotozoal drug pentamidine.
Collapse
Affiliation(s)
- Joscha Kotthaus
- Pharmaceutical Institute, Department of Pharmaceutical and Medicinal Chemistry, Christian-Albrechts-University of Kiel, Gutenbergstrasse 76-78, 24118 Kiel, Germany
| | | | | | | | | | | | | | | |
Collapse
|