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Zhao X, Di J, Luo D, Vaishnav Y, Kamal, Nuralieva N, Verma D, Verma P, Verma S. Recent developments of P-glycoprotein inhibitors and its structure-activity relationship (SAR) studies. Bioorg Chem 2024; 143:106997. [PMID: 38029569 DOI: 10.1016/j.bioorg.2023.106997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/09/2023] [Accepted: 11/21/2023] [Indexed: 12/01/2023]
Abstract
P-glycoprotein (P-gp) over-expression is a key factor in multi-drug resistance (MDR), which is a major factor in the failure of cancer treatment. P-gp inhibitors have been demonstrated to have powerful pharmacological properties and may be used as a therapeutic approach to overcome the MDR in cancer cells. Combining clinical investigations with biochemical and computational research may potentially lead to a clearer understanding of the pharmacological properties and the mechanisms of action of these P-gp inhibitors. The task of turning these discoveries into effective therapeutic candidates for a variety of malignancies, including resistant and metastatic kinds, falls on medicinal chemists. A variety of P-gp inhibitors with great potency, high selectivity, and minimal toxicity have been identified in recent years. The latest advances in drug design, characterization, structure-activity relationship (SAR) research, and modes of action of newly synthesized, powerful small molecules P-gp inhibitors over the previous ten years are highlighted in this review. P-gp transporter over-expression has been linked to MDR, therefore the development of P-gp inhibitors will expand our understanding of the processes and functions of P-gp-mediated drug efflux, which will be helpful for drug discovery and clinical cancer therapies.
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Affiliation(s)
- Xuanming Zhao
- Energy Engineering College, Yulin University, Yulin City 71900, China
| | - Jing Di
- Physical Education College, Yulin University, Yulin City 71900, China.
| | - Dingjie Luo
- School of Humanities and Management, Xi'an Traffic Engineering Institute, Xi'an City 710000, China
| | - Yogesh Vaishnav
- Department of Pharmacy, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur 495009, Chhattisgarh, India
| | - Kamal
- Department of Chemistry, Indian Institute of Technology Jammu, Jammu 181221, India
| | - Nargiza Nuralieva
- School of Education, Shaanxi Normal University, Xi'an 710062, Shaanxi, China
| | - Deepti Verma
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur 492010, Chhattisgarh, India
| | - Payal Verma
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur 492010, Chhattisgarh, India
| | - Shekhar Verma
- University College of Pharmacy Raipur, Chhattisgarh Swami Vivekananda Technical University, Newai, Bhilai 491107, Chhattisgarh, India.
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2
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Davoudi Z, Atherly T, Borcherding DC, Jergens AE, Wannemuehler M, Barrett TA, Wang Q. Study Transportation of Drugs within Newly Established Murine Colon Organoid Systems. Adv Biol (Weinh) 2023; 7:e2300103. [PMID: 37607116 PMCID: PMC10840714 DOI: 10.1002/adbi.202300103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/18/2023] [Indexed: 08/24/2023]
Abstract
The development of 3D organoids of the small intestine is a tremendous breakthrough in drug development and biological research. However, the development of colonic organoids (i.e., colonoids) is particularly challenging due to a lack of simple, cost-effective protocols for colonoid cultivation. Here, intestinal homogenates are described as a supplement to the culture medium for maintaining and replicating colonic stem cells. Colonoids generated by this cultivation protocol demonstrate substantial proliferation and differentiation (3 months). There is a similarity between cultured colonoids and primary colon tissue regarding structure and functionality. To evaluate the functionality of colonoids, permeability testing is performed with suspensions of 4 and 40 kDa fluorescein isothiocyanate-dextran (FITC-DEX). It is observed that neither can permeate the healthy epithelial barrier. The P-glycoprotein receptor, a vital drug efflux pump mitigating potential drug toxicity, is functionally manipulated, as evidenced by its inhibition function by verapamil and monitoring uptake of Rhodamin 123. In addition, Forskolin treatment which affects chloride transport results in organoid swelling; this confirms the functional expression of the CFTR transporter in the colonoids. This protocol to generate colonoids is promising for high-throughput drug screening, toxicity testing, and oral drug development.
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Affiliation(s)
- Zahra Davoudi
- Department of Chemical and Biological Engineering, Iowa State University
| | - Todd Atherly
- Department of Veterinary Clinical Sciences, Iowa State University
| | | | | | | | - Terrence A. Barrett
- Department of Internal Medicine, Division of Gastroenterology, University of Kentucky
| | - Qun Wang
- Department of Chemical and Biological Engineering, Iowa State University
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Özvegy-Laczka C, Ungvári O, Bakos É. Fluorescence-based methods for studying activity and drug-drug interactions of hepatic solute carrier and ATP binding cassette proteins involved in ADME-Tox. Biochem Pharmacol 2023; 209:115448. [PMID: 36758706 DOI: 10.1016/j.bcp.2023.115448] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/11/2023]
Abstract
In humans, approximately 70% of drugs are eliminated through the liver. This process is governed by the concerted action of membrane transporters and metabolic enzymes. Transporters mediating hepatocellular uptake of drugs belong to the SLC (Solute carrier) superfamily of transporters. Drug efflux either toward the portal vein or into the bile is mainly mediated by active transporters of the ABC (ATP Binding Cassette) family. Alteration in the function and/or expression of liver transporters due to mutations, disease conditions, or co-administration of drugs or food components can result in altered pharmacokinetics. On the other hand, drugs or food components interacting with liver transporters may also interfere with liver function (e.g., bile acid homeostasis) and may even cause liver toxicity. Accordingly, certain transporters of the liver should be investigated already at an early stage of drug development. Most frequently radioactive probes are applied in these drug-transporter interaction tests. However, fluorescent probes are cost-effective and sensitive alternatives to radioligands, and are gaining wider application in drug-transporter interaction tests. In our review, we summarize our current understanding about hepatocyte ABC and SLC transporters affected by drug interactions. We provide an update of the available fluorescent and fluorogenic/activable probes applicable in in vitro or in vivo testing of these ABC and SLC transporters, including near-infrared transporter probes especially suitable for in vivo imaging. Furthermore, our review gives a comprehensive overview of the available fluorescence-based methods, not directly relying on the transport of the probe, suitable for the investigation of hepatic ABC or SLC-type drug transporters.
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Affiliation(s)
- Csilla Özvegy-Laczka
- Institute of Enzymology, RCNS, Eötvös Loránd Research Network, H-1117 Budapest, Magyar tudósok krt. 2., Hungary.
| | - Orsolya Ungvári
- Institute of Enzymology, RCNS, Eötvös Loránd Research Network, H-1117 Budapest, Magyar tudósok krt. 2., Hungary; Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Éva Bakos
- Institute of Enzymology, RCNS, Eötvös Loránd Research Network, H-1117 Budapest, Magyar tudósok krt. 2., Hungary
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The Formation of Morphologically Stable Lipid Nanocarriers for Glioma Therapy. Int J Mol Sci 2023; 24:ijms24043632. [PMID: 36835043 PMCID: PMC9964330 DOI: 10.3390/ijms24043632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Cerasomes are a promising modification of liposomes with covalent siloxane networks on the surface that provide outstanding morphological stability while maintaining all the useful traits of liposomes. Herein, thin film hydration and ethanol sol injection methods were utilized to produce cerasomes of various composition, which were then evaluated for the purpose of drug delivery. The most promising nanoparticles obtained by the thin film method were studied closely using MTT assay, flow cytometry and fluorescence microscopy on T98G glioblastoma cell line and modified with surfactants to achieve stability and the ability to bypass the blood-brain barrier. An antitumor agent, paclitaxel, was loaded into cerasomes, which increased its potency and demonstrated increased ability to induce apoptosis in T98G glioblastoma cell culture. Cerasomes loaded with fluorescent dye rhodamine B demonstrated significantly increased fluorescence in brain slices of Wistar rats compared to free rhodamine B. Thin film hydration with Tween 80 addition was established as a more reliable and versatile method for cerasome preparation. Cerasomes increased the antitumor action of paclitaxel toward T98G cancer cells by a factor of 36 and were able to deliver rhodamine B over the blood-brain barrier in rats.
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Sergent JA, Mathouet H, Hulen C, Lameiras P, Feuilloley M, Elomri A, Lomri NE. Effects of Two Natural Bisbenzylisoquinolines, Curine and Guattegaumerine, Extracted from Isolona hexaloba on Rhodamine Efflux by Abcb1b from Rat Glycocholic-Acid-Resistant Hepatocarcinoma Cells. Molecules 2022; 27:molecules27093030. [PMID: 35566380 PMCID: PMC9099951 DOI: 10.3390/molecules27093030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/29/2022] [Accepted: 05/05/2022] [Indexed: 02/06/2023] Open
Abstract
To develop new therapeutic molecules, it is essential to understand the biological effects and targets of clinically relevant compounds. In this article, we describe the extraction and characterization of two alkaloids from the roots of Isolona hexaloba—curine and guattegaumerine. The effect of these alkaloids on the multidrug efflux pump ABCB1 (MDR1/P-Glycoprotein) and their antiproliferative properties were studied. Compared to verapamil, a widely used inhibitor of P-gp, curine and guattegaumerine were found to be weak inhibitors of MDR1/P-Glycoprotein. The highest inhibition of efflux produced by verapamil disappeared in the presence of curine or guattegaumerine as competitors, and the most pronounced effect was achieved with curine. Altogether, this work has provided new insights into the biological effects of these alkaloids on the rat Mdr1b P-gp efflux mechanism and would be beneficial in the design of potent P-gp inhibitors.
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Affiliation(s)
- Jacques-Aurélien Sergent
- Department of Biology, UFR Sciences and Techniques, University of Cergy-Pontoise, 2 Ave A. Chauvin, 95302 Cergy-Pontoise, France;
| | - Hilarion Mathouet
- UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014), Normandie University, 76000 Rouen, France; (H.M.); (P.L.)
| | - Christian Hulen
- Bacterial Communication and Antimicrobial Strategies Research Unit, University of Rouen Normandy, 55 rue Saint Germain, 2700 Evreux, France; (C.H.); (M.F.)
| | - Pedro Lameiras
- UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014), Normandie University, 76000 Rouen, France; (H.M.); (P.L.)
| | - Marc Feuilloley
- Bacterial Communication and Antimicrobial Strategies Research Unit, University of Rouen Normandy, 55 rue Saint Germain, 2700 Evreux, France; (C.H.); (M.F.)
| | - Abdelhakim Elomri
- UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014), Normandie University, 76000 Rouen, France; (H.M.); (P.L.)
- Correspondence: (A.E.); (N.-E.L.); Tel.: +33-235-148-591 (A.E.); +33-134-256-555 (N.-E.L.)
| | - Nour-Eddine Lomri
- Department of Biology, UFR Sciences and Techniques, University of Cergy-Pontoise, 2 Ave A. Chauvin, 95302 Cergy-Pontoise, France;
- Bacterial Communication and Antimicrobial Strategies Research Unit, University of Rouen Normandy, 55 rue Saint Germain, 2700 Evreux, France; (C.H.); (M.F.)
- Correspondence: (A.E.); (N.-E.L.); Tel.: +33-235-148-591 (A.E.); +33-134-256-555 (N.-E.L.)
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Mechanistic basis for multidrug resistance and collateral drug sensitivity conferred to the malaria parasite by polymorphisms in PfMDR1 and PfCRT. PLoS Biol 2022; 20:e3001616. [PMID: 35507548 PMCID: PMC9067703 DOI: 10.1371/journal.pbio.3001616] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 03/31/2022] [Indexed: 01/16/2023] Open
Abstract
Polymorphisms in the Plasmodium falciparum multidrug resistance protein 1 (pfmdr1) gene and the Plasmodium falciparum chloroquine resistance transporter (pfcrt) gene alter the malaria parasite’s susceptibility to most of the current antimalarial drugs. However, the precise mechanisms by which PfMDR1 contributes to multidrug resistance have not yet been fully elucidated, nor is it understood why polymorphisms in pfmdr1 and pfcrt that cause chloroquine resistance simultaneously increase the parasite’s susceptibility to lumefantrine and mefloquine—a phenomenon known as collateral drug sensitivity. Here, we present a robust expression system for PfMDR1 in Xenopus oocytes that enables direct and high-resolution biochemical characterizations of the protein. We show that wild-type PfMDR1 transports diverse pharmacons, including lumefantrine, mefloquine, dihydroartemisinin, piperaquine, amodiaquine, methylene blue, and chloroquine (but not the antiviral drug amantadine). Field-derived mutant isoforms of PfMDR1 differ from the wild-type protein, and each other, in their capacities to transport these drugs, indicating that PfMDR1-induced changes in the distribution of drugs between the parasite’s digestive vacuole (DV) and the cytosol are a key driver of both antimalarial resistance and the variability between multidrug resistance phenotypes. Of note, the PfMDR1 isoforms prevalent in chloroquine-resistant isolates exhibit reduced capacities for chloroquine, lumefantrine, and mefloquine transport. We observe the opposite relationship between chloroquine resistance-conferring mutations in PfCRT and drug transport activity. Using our established assays for characterizing PfCRT in the Xenopus oocyte system and in live parasite assays, we demonstrate that these PfCRT isoforms transport all 3 drugs, whereas wild-type PfCRT does not. We present a mechanistic model for collateral drug sensitivity in which mutant isoforms of PfMDR1 and PfCRT cause chloroquine, lumefantrine, and mefloquine to remain in the cytosol instead of sequestering within the DV. This change in drug distribution increases the access of lumefantrine and mefloquine to their primary targets (thought to be located outside of the DV), while simultaneously decreasing chloroquine’s access to its target within the DV. The mechanistic insights presented here provide a basis for developing approaches that extend the useful life span of antimalarials by exploiting the opposing selection forces they exert upon PfCRT and PfMDR1.
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Magalhães N, Simões GM, Ramos C, Samelo J, Oliveira AC, Filipe HAL, Ramalho JPP, Moreno MJ, Loura LMS. Interactions between Rhodamine Dyes and Model Membrane Systems—Insights from Molecular Dynamics Simulations. Molecules 2022; 27:molecules27041420. [PMID: 35209208 PMCID: PMC8876248 DOI: 10.3390/molecules27041420] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 02/04/2023] Open
Abstract
Background: rhodamines are dyes widely used as fluorescent tags in cell imaging, probing of mitochondrial membrane potential, and as P-glycoprotein model substrates. In all these applications, detailed understanding of the interaction between rhodamines and biomembranes is fundamental. Methods: we combined atomistic molecular dynamics (MD) simulations and fluorescence spectroscopy to characterize the interaction between rhodamines 123 and B (Rh123 and RhB, respectively) and POPC bilayers. Results: while the xanthene moiety orients roughly parallel to the membrane plane in unrestrained MD simulations, variations on the relative position of the benzoic ring (below the xanthene for Rh123, above it for RhB) were observed, and related to the structure of the two dyes and their interactions with water and lipids. Subtle distinctions were found among different ionization forms of the probes. Experimentally, RhB displayed a lipid/water partition coefficient more than two orders of magnitude higher than Rh123, in agreement with free energy profiles obtained from umbrella sampling MD. Conclusions: this work provided detailed insights on the similarities and differences in the behavior of bilayer-inserted Rh123 and RhB, related to the structure of the probes. The much higher affinity of RhB for the membranes increases the local concentration and explains its higher apparent affinity for P-glycoprotein reconstituted in model membranes.
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Affiliation(s)
- Nisa Magalhães
- Coimbra Chemistry Center—Institute of Molecular Sciences (CQC-IMS), University of Coimbra, 3004-535 Coimbra, Portugal; (N.M.); (G.M.S.); (C.R.); (J.S.); (A.C.O.); (H.A.L.F.); (M.J.M.)
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Guilherme M. Simões
- Coimbra Chemistry Center—Institute of Molecular Sciences (CQC-IMS), University of Coimbra, 3004-535 Coimbra, Portugal; (N.M.); (G.M.S.); (C.R.); (J.S.); (A.C.O.); (H.A.L.F.); (M.J.M.)
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Cristiana Ramos
- Coimbra Chemistry Center—Institute of Molecular Sciences (CQC-IMS), University of Coimbra, 3004-535 Coimbra, Portugal; (N.M.); (G.M.S.); (C.R.); (J.S.); (A.C.O.); (H.A.L.F.); (M.J.M.)
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Jaime Samelo
- Coimbra Chemistry Center—Institute of Molecular Sciences (CQC-IMS), University of Coimbra, 3004-535 Coimbra, Portugal; (N.M.); (G.M.S.); (C.R.); (J.S.); (A.C.O.); (H.A.L.F.); (M.J.M.)
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Alexandre C. Oliveira
- Coimbra Chemistry Center—Institute of Molecular Sciences (CQC-IMS), University of Coimbra, 3004-535 Coimbra, Portugal; (N.M.); (G.M.S.); (C.R.); (J.S.); (A.C.O.); (H.A.L.F.); (M.J.M.)
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Hugo A. L. Filipe
- Coimbra Chemistry Center—Institute of Molecular Sciences (CQC-IMS), University of Coimbra, 3004-535 Coimbra, Portugal; (N.M.); (G.M.S.); (C.R.); (J.S.); (A.C.O.); (H.A.L.F.); (M.J.M.)
- CPIRN-IPG—Center of Potential and Innovation of Natural Resources, Polytechnic Institute of Guarda, 6300-559 Guarda, Portugal
| | - João P. Prates Ramalho
- Hercules Laboratory, LAQV, REQUIMTE, Department of Chemistry, School of Science and Technology, University of Évora, 7000-671 Evora, Portugal;
| | - Maria João Moreno
- Coimbra Chemistry Center—Institute of Molecular Sciences (CQC-IMS), University of Coimbra, 3004-535 Coimbra, Portugal; (N.M.); (G.M.S.); (C.R.); (J.S.); (A.C.O.); (H.A.L.F.); (M.J.M.)
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
- CNC—Center for Neuroscience and Cell Biology, 3004-504 Coimbra, Portugal
| | - Luís M. S. Loura
- Coimbra Chemistry Center—Institute of Molecular Sciences (CQC-IMS), University of Coimbra, 3004-535 Coimbra, Portugal; (N.M.); (G.M.S.); (C.R.); (J.S.); (A.C.O.); (H.A.L.F.); (M.J.M.)
- CNC—Center for Neuroscience and Cell Biology, 3004-504 Coimbra, Portugal
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
- Correspondence:
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Kita DH, de Andrade GA, Missina JM, Postal K, Boell VK, Santana FS, Zattoni IF, da Silva Zanzarini I, Moure VR, de Moraes Rego FG, Picheth G, de Souza EM, Mitchell DA, Ambudkar SV, Nunes GG, Valdameri G. Polyoxovanadates as new P-glycoprotein inhibitors: insights into the mechanism of inhibition. FEBS Lett 2022; 596:381-399. [PMID: 34939198 PMCID: PMC9340886 DOI: 10.1002/1873-3468.14265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 12/02/2021] [Accepted: 12/13/2021] [Indexed: 02/03/2023]
Abstract
A promising strategy to overcome multidrug resistance is the use of inhibitors of ABC drug transporters. For this reason, we evaluated the polyoxovanadates (POVs) [V10 O28 ]6- (V10 ), [H6 V14 O38 (PO4 )]5- (V14 ), [V15 O36 Cl]6- (V15 ) and [V18 O42 I]7- (V18 ) as inhibitors of three major multidrug resistance-linked ABC transporters: P-glycoprotein (P-gp), ABCG2 and MRP1. All of the POVs selectively inhibited P-gp. V10 and V18 were the two most promising compounds, with IC50 values of transport inhibition of 25.4 and 22.7 µm, respectively. Both compounds inhibited P-gp ATPase activity, with the same IC50 value of 1.26 µm. V10 and V18 triggered different conformational changes in the P-gp protein with time-dependent inhibition, which was confirmed using the synthesized salt of V10 with rhodamine B, RhoB-V10 . The hydrophilic nature of POVs supports the hypothesis that these compounds target an unusual ligand-binding site, opening new possibilities in the development of potent modulators of ABC transporters.
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Affiliation(s)
- Diogo Henrique Kita
- Pharmaceutical Sciences Graduate Program, Laboratory of Cancer Drug Resistance, Federal University of Paraná, Curitiba, PR, Brazil,Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Gisele Alves de Andrade
- Pharmaceutical Sciences Graduate Program, Laboratory of Cancer Drug Resistance, Federal University of Paraná, Curitiba, PR, Brazil
| | | | - Kahoana Postal
- Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil
| | | | | | - Ingrid Fatima Zattoni
- Pharmaceutical Sciences Graduate Program, Laboratory of Cancer Drug Resistance, Federal University of Paraná, Curitiba, PR, Brazil
| | - Isadora da Silva Zanzarini
- Pharmaceutical Sciences Graduate Program, Laboratory of Cancer Drug Resistance, Federal University of Paraná, Curitiba, PR, Brazil
| | - Vivian Rotuno Moure
- Pharmaceutical Sciences Graduate Program, Laboratory of Cancer Drug Resistance, Federal University of Paraná, Curitiba, PR, Brazil,Department of Clinical Analysis, Federal University of Paraná, Curitiba, PR, Brazil
| | | | - Geraldo Picheth
- Department of Clinical Analysis, Federal University of Paraná, Curitiba, PR, Brazil
| | - Emanuel Maltempi de Souza
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, Brazil
| | - David A. Mitchell
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Suresh V. Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Giovana Gioppo Nunes
- Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil,Correspondence and requests for materials should be addressed to Giovana Gioppo Nunes () or Glaucio Valdameri (). Phone: +55(41)33604078. Laboratory website: www.lcdr.ufpr.br
| | - Glaucio Valdameri
- Pharmaceutical Sciences Graduate Program, Laboratory of Cancer Drug Resistance, Federal University of Paraná, Curitiba, PR, Brazil,Department of Clinical Analysis, Federal University of Paraná, Curitiba, PR, Brazil,Correspondence and requests for materials should be addressed to Giovana Gioppo Nunes () or Glaucio Valdameri (). Phone: +55(41)33604078. Laboratory website: www.lcdr.ufpr.br
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Dong X, Sun Y, Li Y, Ma X, Zhang S, Yuan Y, Kohn J, Liu C, Qian J. Synergistic Combination of Bioactive Hydroxyapatite Nanoparticles and the Chemotherapeutic Doxorubicin to Overcome Tumor Multidrug Resistance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007672. [PMID: 33759364 DOI: 10.1002/smll.202007672] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 03/06/2021] [Indexed: 06/12/2023]
Abstract
Multidrug resistance (MDR) is one of the biggest obstacles in cancer chemotherapy. Here, a remarkable reversal of MDR in breast cancer through the synergistic effects of bioactive hydroxyapatite nanoparticles (HAPNs) and doxorubicin (DOX) is shown. DOX loaded HAPNs (DHAPNs) exhibit a 150-fold reduction in IC50 compared with free DOX for human MDR breast cancer MCF-7/ADR cells, and lead to almost complete inhibition of tumor growth in vivo without obvious side effects of free DOX. This high efficacy and specificity could be attributed to multiple action mechanisms of HAPNs. In addition to acting as the conventional nanocarriers to facilitate the cellular uptake and retention of DOX in MCF-7/ADR cells, more importantly, drug-free HAPNs themselves are able to prevent drug being pumped out of MDR cells through targeting mitochondria to induce mitochondrial damage and inhibit ATP production and to trigger sustained mitochondrial calcium overload and apoptosis in MDR cancer cells while not affecting normal cells. The results demonstrate that this simple but versatile bioactive nanoparticle provides a practical approach to effectively overcome MDR.
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Affiliation(s)
- Xiulin Dong
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yi Sun
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yuanyuan Li
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Xiaoyu Ma
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Shuiquan Zhang
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yuan Yuan
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Joachim Kohn
- New Jersey Center for Biomaterials, Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, NJ, 08855, USA
| | - Changsheng Liu
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Jiangchao Qian
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
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Topal GR, Mészáros M, Porkoláb G, Szecskó A, Polgár TF, Siklós L, Deli MA, Veszelka S, Bozkir A. ApoE-Targeting Increases the Transfer of Solid Lipid Nanoparticles with Donepezil Cargo across a Culture Model of the Blood-Brain Barrier. Pharmaceutics 2020; 13:38. [PMID: 33383743 PMCID: PMC7824445 DOI: 10.3390/pharmaceutics13010038] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/17/2020] [Accepted: 12/23/2020] [Indexed: 12/16/2022] Open
Abstract
Pharmacological treatment of central nervous system (CNS) disorders is difficult, because the blood-brain barrier (BBB) restricts the penetration of many drugs into the brain. To solve this unmet therapeutic need, nanosized drug carriers are the focus of research efforts to develop drug delivery systems for the CNS. For the successful delivery of nanoparticles (NPs) to the brain, targeting ligands on their surface is necessary. Our research aim was to design a nanoscale drug delivery system for a more efficient transfer of donepezil, an anticholinergic drug in the therapy of Alzheimer's disease across the BBB. Rhodamine B-labeled solid lipid nanoparticles with donepezil cargo were prepared and targeted with apolipoprotein E (ApoE), a ligand of BBB receptors. Nanoparticles were characterized by measurement of size, polydispersity index, zeta potential, thermal analysis, Fourier-transform infrared spectroscopy, in vitro release, and stability. Cytotoxicity of nanoparticles were investigated by metabolic assay and impedance-based cell analysis. ApoE-targeting increased the uptake of lipid nanoparticles in cultured brain endothelial cells and neurons. Furthermore, the permeability of ApoE-targeted nanoparticles across a co-culture model of the BBB was also elevated. Our data indicate that ApoE, which binds BBB receptors, can potentially be exploited for successful CNS targeting of solid lipid nanoparticles.
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Affiliation(s)
- Gizem Rüya Topal
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Yenimahalle, Ankara 06560, Turkey;
| | - Mária Mészáros
- Institute of Biophysics, Biological Research Centre, Temesvári krt. 62, H-6726 Szeged, Hungary; (M.M.); (G.P.); (A.S.); (T.F.P.); (L.S.); (M.A.D.)
| | - Gergő Porkoláb
- Institute of Biophysics, Biological Research Centre, Temesvári krt. 62, H-6726 Szeged, Hungary; (M.M.); (G.P.); (A.S.); (T.F.P.); (L.S.); (M.A.D.)
| | - Anikó Szecskó
- Institute of Biophysics, Biological Research Centre, Temesvári krt. 62, H-6726 Szeged, Hungary; (M.M.); (G.P.); (A.S.); (T.F.P.); (L.S.); (M.A.D.)
| | - Tamás Ferenc Polgár
- Institute of Biophysics, Biological Research Centre, Temesvári krt. 62, H-6726 Szeged, Hungary; (M.M.); (G.P.); (A.S.); (T.F.P.); (L.S.); (M.A.D.)
| | - László Siklós
- Institute of Biophysics, Biological Research Centre, Temesvári krt. 62, H-6726 Szeged, Hungary; (M.M.); (G.P.); (A.S.); (T.F.P.); (L.S.); (M.A.D.)
| | - Mária A. Deli
- Institute of Biophysics, Biological Research Centre, Temesvári krt. 62, H-6726 Szeged, Hungary; (M.M.); (G.P.); (A.S.); (T.F.P.); (L.S.); (M.A.D.)
| | - Szilvia Veszelka
- Institute of Biophysics, Biological Research Centre, Temesvári krt. 62, H-6726 Szeged, Hungary; (M.M.); (G.P.); (A.S.); (T.F.P.); (L.S.); (M.A.D.)
| | - Asuman Bozkir
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Yenimahalle, Ankara 06560, Turkey;
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11
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Fischer H, Senn C, Ullah M, Cantrill C, Schuler F, Yu L. Calculation of an Apical Efflux Ratio from P-Glycoprotein (P-gp) In Vitro Transport Experiments Shows an Improved Correlation with In Vivo Cerebrospinal Fluid Measurements in Rats: Impact on P-gp Screening and Compound Optimization. J Pharmacol Exp Ther 2020; 376:322-329. [PMID: 33288523 DOI: 10.1124/jpet.120.000158] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 12/02/2020] [Indexed: 11/22/2022] Open
Abstract
P-glycoprotein (P-gp) is a major blood-brain barrier (BBB) efflux transporter. In vitro approaches, including bidirectional efflux ratio (ER), are used to measure P-gp-mediated transport, but findings can be inconsistent across models. We propose a novel, more physiologically relevant, in vitro model: unidirectional apical efflux ratio (AP-ER)-a ratio of permeability rates at the apical side of the BBB with and without P-gp inhibitor. To test our approach, ER and AP-ER were calculated for 3227 structurally diverse compounds in porcine kidney epithelial cells (LLC-PK1) overexpressing human or mouse P-gp and classified based on their passive transcellular P-gp permeability or charged properties. In vivo rat infusion studies were performed for selected compounds with high ER but low AP-ER. One-third of the 3227 compounds had bidirectional ER that was much higher than AP-ER; very few had AP-ER higher than ER. Compounds with a large difference between AP-ER and ER were typically basic compounds with low-to-medium passive permeability and high lipophilicity and/or amphiphilicity, leading to strong membrane binding. Outcomes in the human model were similar to those in mice, suggesting AP-ER/ER ratios may be conserved for at least two species. AP-ER predicted measured cerebrospinal fluid (CSF) concentration better than ER for the five compounds tested in our in vivo rat infusion studies. We report superior estimations of the CSF concentrations of the compounds when based on less resource-intensive AP-ER versus classic ER. Better understanding of the properties leading to high P-gp-mediated efflux in vivo could support more efficient brain-penetrant compound screening and optimization. SIGNIFICANCE STATEMENT: To address inconsistencies associated with the historical, bidirectional efflux ratio (ER) calculation of P-glycoprotein-mediated transport, we propose to use the novel, more physiologically relevant, unidirectional apical efflux ratio (AP-ER) model. In vitro experiments suggested that compounds with strong membrane binding showed the largest difference between AP-ER and ER, and in vivo infusion studies showed that AP-ER predicted cerebrospinal fluid concentrations of compounds better than ER; outcomes in the human model were similar to those in mice.
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Affiliation(s)
- Holger Fischer
- Roche Pharmaceutical Research and Early Development, DMPK/PD project leader (H.F.), Comparative Pharmacology (C.S.), Investigative Safety, Pharmaceutical Sciences (M.U., C.C.), and Immunology, Infectious Disease and Ophthalmology (F.S.), Roche Innovation Center, Basel, Switzerland; and Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, Roche Translational and Clinical Research Center, Inc., and LIYU Pharmaceutical Consulting LCC, New Jersey, USA (L.Y.)
| | - Claudia Senn
- Roche Pharmaceutical Research and Early Development, DMPK/PD project leader (H.F.), Comparative Pharmacology (C.S.), Investigative Safety, Pharmaceutical Sciences (M.U., C.C.), and Immunology, Infectious Disease and Ophthalmology (F.S.), Roche Innovation Center, Basel, Switzerland; and Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, Roche Translational and Clinical Research Center, Inc., and LIYU Pharmaceutical Consulting LCC, New Jersey, USA (L.Y.)
| | - Mohammed Ullah
- Roche Pharmaceutical Research and Early Development, DMPK/PD project leader (H.F.), Comparative Pharmacology (C.S.), Investigative Safety, Pharmaceutical Sciences (M.U., C.C.), and Immunology, Infectious Disease and Ophthalmology (F.S.), Roche Innovation Center, Basel, Switzerland; and Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, Roche Translational and Clinical Research Center, Inc., and LIYU Pharmaceutical Consulting LCC, New Jersey, USA (L.Y.)
| | - Carina Cantrill
- Roche Pharmaceutical Research and Early Development, DMPK/PD project leader (H.F.), Comparative Pharmacology (C.S.), Investigative Safety, Pharmaceutical Sciences (M.U., C.C.), and Immunology, Infectious Disease and Ophthalmology (F.S.), Roche Innovation Center, Basel, Switzerland; and Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, Roche Translational and Clinical Research Center, Inc., and LIYU Pharmaceutical Consulting LCC, New Jersey, USA (L.Y.)
| | - Franz Schuler
- Roche Pharmaceutical Research and Early Development, DMPK/PD project leader (H.F.), Comparative Pharmacology (C.S.), Investigative Safety, Pharmaceutical Sciences (M.U., C.C.), and Immunology, Infectious Disease and Ophthalmology (F.S.), Roche Innovation Center, Basel, Switzerland; and Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, Roche Translational and Clinical Research Center, Inc., and LIYU Pharmaceutical Consulting LCC, New Jersey, USA (L.Y.)
| | - Li Yu
- Roche Pharmaceutical Research and Early Development, DMPK/PD project leader (H.F.), Comparative Pharmacology (C.S.), Investigative Safety, Pharmaceutical Sciences (M.U., C.C.), and Immunology, Infectious Disease and Ophthalmology (F.S.), Roche Innovation Center, Basel, Switzerland; and Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, Roche Translational and Clinical Research Center, Inc., and LIYU Pharmaceutical Consulting LCC, New Jersey, USA (L.Y.)
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12
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Rossi M, Ott SR, Niven JE. Malpighamoeba infection compromises fluid secretion and P-glycoprotein detoxification in Malpighian tubules. Sci Rep 2020; 10:15953. [PMID: 32994425 PMCID: PMC7525526 DOI: 10.1038/s41598-020-72598-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 06/29/2020] [Indexed: 01/11/2023] Open
Abstract
Malpighian tubules, analogous to vertebrate nephrons, play a key role in insect osmoregulation and detoxification. Tubules can become infected with a protozoan, Malpighamoeba, which damages their epithelial cells, potentially compromising their function. Here we used a modified Ramsay assay to quantify the impact of Malpighamoeba infection on fluid secretion and P-glycoprotein-dependent detoxification by desert locust Malpighian tubules. Infected tubules have a greater surface area and a higher fluid secretion rate than uninfected tubules. Infection also impairs P-glycoprotein-dependent detoxification by reducing the net rhodamine extrusion per surface area. However, due to the increased surface area and fluid secretion rate, infected tubules have similar total net extrusion per tubule to uninfected tubules. Increased fluid secretion rate of infected tubules likely exposes locusts to greater water stress and increased energy costs. Coupled with reduced efficiency of P-glycoprotein detoxification per surface area, Malpighamoeba infection is likely to reduce insect survival in natural environments.
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Affiliation(s)
- Marta Rossi
- School of Life Sciences, University of Sussex, Falmer, Brighton, BN1 9QG, UK.
| | - Swidbert R Ott
- Department of Neuroscience, Psychology and Behaviour, University of Leicester, Adrian Building, University Road, Leicester, LE1 7RH, UK
| | - Jeremy E Niven
- School of Life Sciences, University of Sussex, Falmer, Brighton, BN1 9QG, UK. .,Centre for Computational Neuroscience and Robotics, University of Sussex, Falmer, Brighton, BN1 9QG, UK.
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13
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Dong J, Qin Z, Zhang WD, Cheng G, Yehuda AG, Ashby CR, Chen ZS, Cheng XD, Qin JJ. Medicinal chemistry strategies to discover P-glycoprotein inhibitors: An update. Drug Resist Updat 2020; 49:100681. [PMID: 32014648 DOI: 10.1016/j.drup.2020.100681] [Citation(s) in RCA: 140] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/13/2020] [Accepted: 01/16/2020] [Indexed: 12/16/2022]
Abstract
The presence of multidrug resistance (MDR) in malignant tumors is one of the primary causes of treatment failure in cancer chemotherapy. The overexpression of the ATP binding cassette (ABC) transporter, P-glycoprotein (P-gp), which significantly increases the efflux of certain anticancer drugs from tumor cells, produces MDR. Therefore, inhibition of P-gp may represent a viable therapeutic strategy to overcome cancer MDR. Over the past 4 decades, many compounds with P-gp inhibitory efficacy (referred to as first- and second-generation P-gp inhibitors) have been identified or synthesized. However, these compounds were not successful in clinical trials due to a lack of efficacy and/or untoward toxicity. Subsequently, third- and fourth-generation P-gp inhibitors were developed but dedicated clinical trials did not indicate a significant therapeutic effect. In recent years, an extraordinary array of highly potent, selective, and low-toxicity P-gp inhibitors have been reported. Herein, we provide a comprehensive review of the synthetic and natural products that have specific inhibitory activity on P-gp drug efflux as well as promising chemosensitizing efficacy in MDR cancer cells. The present review focuses primarily on the structural features, design strategies, and structure-activity relationships (SAR) of these compounds.
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Affiliation(s)
- Jinyun Dong
- Institute of Cancer and Basic Medicine, Chinese Academy of Sciences, Cancer Hospital of the University of Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou, 310022, China; College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Zuodong Qin
- Research Center of Biochemical Engineering Technology, College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China
| | - Wei-Dong Zhang
- School of Pharmacy, Naval Medical University, Shanghai, 200433, China
| | - Gang Cheng
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Assaraf G Yehuda
- The Fred Wyszkowski Cancer Research Laboratory, Department of Biology, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Charles R Ashby
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, 11439, USA
| | - Zhe-Sheng Chen
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, 11439, USA.
| | - Xiang-Dong Cheng
- Institute of Cancer and Basic Medicine, Chinese Academy of Sciences, Cancer Hospital of the University of Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou, 310022, China.
| | - Jiang-Jiang Qin
- Institute of Cancer and Basic Medicine, Chinese Academy of Sciences, Cancer Hospital of the University of Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou, 310022, China; College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
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14
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Gerasimaitė R, Seikowski J, Schimpfhauser J, Kostiuk G, Gilat T, D'Este E, Schnorrenberg S, Lukinavičius G. Efflux pump insensitive rhodamine–jasplakinolide conjugates for G- and F-actin imaging in living cells. Org Biomol Chem 2020; 18:2929-2937. [DOI: 10.1039/d0ob00369g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Fluorescent actin probes made of 6′-carbopyronines and jasplakinolide are insensitive to efflux pumps and stain F- and G-actin efficiently in living cells, allowing high quality 2D and 3D nanoscopy of dynamic actin structures.
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Affiliation(s)
- Rūta Gerasimaitė
- Chromatin Labeling and Imaging Group
- Department of Nanobiophotonics
- Max Planck Institute for Biophysical Chemistry
- Göttingen
- Germany
| | - Jan Seikowski
- Facility for Synthetic Chemistry
- Max Planck Institute for Biophysical Chemistry
- Göttingen
- Germany
| | - Jens Schimpfhauser
- Facility for Synthetic Chemistry
- Max Planck Institute for Biophysical Chemistry
- Göttingen
- Germany
| | - Georgij Kostiuk
- Chromatin Labeling and Imaging Group
- Department of Nanobiophotonics
- Max Planck Institute for Biophysical Chemistry
- Göttingen
- Germany
| | - Tanja Gilat
- Department of Nanobiophotonics
- Max Planck Institute for Biophysical Chemistry
- Göttingen
- Germany
| | - Elisa D'Este
- Optical Microscopy Facility
- Max Planck Institute for Medical Research
- 69120 Heidelberg
- Germany
| | - Sebastian Schnorrenberg
- Department of Nanobiophotonics
- Max Planck Institute for Biophysical Chemistry
- Göttingen
- Germany
| | - Gražvydas Lukinavičius
- Chromatin Labeling and Imaging Group
- Department of Nanobiophotonics
- Max Planck Institute for Biophysical Chemistry
- Göttingen
- Germany
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15
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Rossi M, De Battisti D, Niven JE. Transepithelial transport of P-glycoprotein substrate by the Malpighian tubules of the desert locust. PLoS One 2019; 14:e0223569. [PMID: 31593571 PMCID: PMC6782089 DOI: 10.1371/journal.pone.0223569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/24/2019] [Indexed: 01/11/2023] Open
Abstract
Extrusion of xenobiotics is essential for allowing animals to remove toxic substances present in their diet or generated as a biproduct of their metabolism. By transporting a wide range of potentially noxious substrates, active transporters of the ABC transporter family play an important role in xenobiotic extrusion. One such class of transporters are the multidrug resistance P-glycoprotein transporters. Here, we investigated P-glycoprotein transport in the Malpighian tubules of the desert locust (Schistocerca gregaria), a species whose diet includes plants that contain toxic secondary metabolites. To this end, we studied transporter physiology using a modified Ramsay assay in which ex vivo Malpighian tubules are incubated in different solutions containing the P-glycoprotein substrate dye rhodamine B in combination with different concentrations of the P-glycoprotein inhibitor verapamil. To determine the quantity of the P-glycoprotein substrate extruded we developed a simple and cheap method as an alternative to liquid chromatography–mass spectrometry, radiolabelled alkaloids or confocal microscopy. Our evidence shows that: (i) the Malpighian tubules contain a P-glycoprotein; (ii) tubule surface area is positively correlated with the tubule fluid secretion rate; and (iii) as the fluid secretion rate increases so too does the net extrusion of rhodamine B. We were able to quantify precisely the relationships between the fluid secretion, surface area, and net extrusion. We interpret these results in the context of the life history and foraging ecology of desert locusts. We argue that P-glycoproteins contribute to the removal of xenobiotic substances from the haemolymph, thereby enabling gregarious desert locusts to maintain toxicity through the ingestion of toxic plants without suffering the deleterious effects themselves.
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Affiliation(s)
- Marta Rossi
- School of Life Sciences, University of Sussex, Falmer, Brighton, United Kingdom
- * E-mail: (MR); (JEN)
| | - Davide De Battisti
- Department of Bioscience, Swansea University, Swansea, Singleton park, Wales, United Kingdom
| | - Jeremy Edward Niven
- School of Life Sciences, University of Sussex, Falmer, Brighton, United Kingdom
- Centre for Computational Neuroscience and Robotics, University of Sussex, Falmer, Brighton, United Kingdom
- * E-mail: (MR); (JEN)
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16
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Crawford LA, Watkins HC, Wayne E, Putnam D. Altered Biodistribution and Tissue Retention of Nanoparticles Targeted with P-Glycoprotein Substrates. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2019. [DOI: 10.1007/s40883-019-00111-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Storck SE, Hartz AM, Bernard J, Wolf A, Kachlmeier A, Mahringer A, Weggen S, Pahnke J, Pietrzik CU. The concerted amyloid-beta clearance of LRP1 and ABCB1/P-gp across the blood-brain barrier is linked by PICALM. Brain Behav Immun 2018; 73:21-33. [PMID: 30041013 PMCID: PMC7748946 DOI: 10.1016/j.bbi.2018.07.017] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 07/10/2018] [Accepted: 07/20/2018] [Indexed: 01/18/2023] Open
Abstract
The accumulation of neurotoxic amyloid-beta (Aβ) in the brain is a characteristic hallmark of Alzheimer's disease (AD). The blood-brain barrier (BBB) provides a large surface area and has been shown to be an important mediator for removal of brain Aβ. Both, the ABC transporter P-glycoprotein (ABCB1/P-gp) and the receptor low-density lipoprotein receptor-related protein 1 (LRP1) have been implicated to play crucial roles in Aβ efflux from brain. Here, with immunoprecipitation experiments, co-immunostainings and dual inhibition of ABCB1/P-gp and LRP1, we show that both proteins are functionally linked, mediating a concerted transcytosis of Aβ through endothelial cells. Late-onset AD risk factor Phosphatidylinositol binding clathrin assembly protein (PICALM) is associated with both ABCB1/P-gp and LRP1 representing a functional link and guiding both proteins through the brain endothelium. Together, our results give more mechanistic insight on Aβ transport across the BBB and show that the functional interplay of different clearance proteins is needed for the rapid removal of Aβ from the brain.
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Affiliation(s)
- Steffen E. Storck
- Institute for Pathobiochemistry, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
| | - Anika M.S. Hartz
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States,Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY, United States
| | - Jessica Bernard
- Institute for Pathobiochemistry, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
| | - Andrea Wolf
- Department of Pharmacy Practice and Pharmaceutical Sciences, College of Pharmacy, University of Minnesota, Duluth, MN, United States
| | - André Kachlmeier
- Institute for Pathobiochemistry, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
| | - Anne Mahringer
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Germany
| | - Sascha Weggen
- Department of Neuropathology, Heinrich Heine University Duesseldorf, Duesseldorf, Germany
| | - Jens Pahnke
- University of Oslo (UiO) & Oslo University Hospital (OUS), Department of Neuro-/Pathology, Oslo, Norway,University of Lübeck (UzL), LIED, Lübeck, Germany,Leibniz-Institute of Plant Biochemistry (IPB), Department for Bioorganic Chemistry, Halle, Germany,University of Latvia (UL), Department of Pharmacology, Riga, Latvia
| | - Claus U. Pietrzik
- Institute for Pathobiochemistry, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany,Corresponding author at: University Medical Center of the Johannes Gutenberg-University of Mainz, Institute for Pathobiochemistry, Molecular Neurodegeneration, Duesbergweg 6, 55099 Mainz, Germany. (C.U. Pietrzik)
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18
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Zhitomirsky B, Farber H, Assaraf YG. LysoTracker and MitoTracker Red are transport substrates of P-glycoprotein: implications for anticancer drug design evading multidrug resistance. J Cell Mol Med 2018; 22:2131-2141. [PMID: 29377455 PMCID: PMC5867146 DOI: 10.1111/jcmm.13485] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 11/02/2017] [Indexed: 01/17/2023] Open
Abstract
LysoTracker and MitoTracker Red are fluorescent probes widely used for viable cell staining of lysosomes and mitochondria, respectively. They are utilized to study organelle localization and their resident proteins, assess organelle functionality and quantification of organelle numbers. The ATP‐driven efflux transporter P‐glycoprotein (P‐gp) is expressed in normal and malignant tissues and extrudes structurally distinct endogenous and exogenous cytotoxic compounds. Thus, once aromatic hydrophobic compounds such as the above‐mentioned fluorescent probes are recognized as transport substrates, efflux pumps including P‐gp may abolish their ability to reach their cellular target organelles. Herein, we show that LysoTracker and MitoTracker Red are expelled from P‐gp‐overexpressing cancer cells, thus hindering their ability to fluorescently mark target organelles. We further demonstrate that tariquidar, a potent P‐gp transport inhibitor, restores LysoTracker and MitoTracker Red cell entry. We conclude that LysoTracker and MitoTracker Red are P‐gp transport substrates, and therefore, P‐gp expression must be taken into consideration prior to cellular applications using these probes. Importantly, as MitoTracker was a superior P‐gp substrate than LysoTracker Red, we discuss the implications for the future design of chemotherapeutics evading cancer multidrug resistance. Furthermore, restoration of MitoTracker Red fluorescence in P‐gp‐overexpressing cells may facilitate the identification of potent P‐gp transport inhibitors (i.e. chemosensitizers).
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Affiliation(s)
- Benny Zhitomirsky
- Department of Biology, The Fred Wyszkowski Cancer Research Laboratory, Technion-Israel Institute of Technology, Haifa, Israel
| | - Hodaya Farber
- Department of Biology, The Fred Wyszkowski Cancer Research Laboratory, Technion-Israel Institute of Technology, Haifa, Israel
| | - Yehuda G Assaraf
- Department of Biology, The Fred Wyszkowski Cancer Research Laboratory, Technion-Israel Institute of Technology, Haifa, Israel
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19
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Ebeid K, Meng X, Thiel KW, Do AV, Geary SM, Morris AS, Pham EL, Wongrakpanich A, Chhonker YS, Murry DJ, Leslie KK, Salem AK. Synthetically lethal nanoparticles for treatment of endometrial cancer. NATURE NANOTECHNOLOGY 2018; 13:72-81. [PMID: 29203914 PMCID: PMC5762267 DOI: 10.1038/s41565-017-0009-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 09/19/2017] [Indexed: 05/29/2023]
Abstract
Uterine serous carcinoma, one of the most aggressive types of endometrial cancer, is characterized by poor outcomes and mutations in the tumour suppressor p53. Our objective was to engender synthetic lethality to paclitaxel (PTX), the frontline treatment for endometrial cancer, in tumours with mutant p53 and enhance the therapeutic efficacy using polymeric nanoparticles (NPs). First, we identified the optimal NP formulation through comprehensive analyses of release profiles and cellular-uptake and cell viability studies. Not only were PTX-loaded NPs superior to PTX in solution, but the combination of PTX-loaded NPs with the antiangiogenic molecular inhibitor BIBF 1120 (BIBF) promoted synthetic lethality specifically in cells with the loss-of-function (LOF) p53 mutation. In a xenograft model of endometrial cancer, this combinatorial therapy resulted in a marked inhibition of tumour progression and extended survival. Together, our data provide compelling evidence for future studies of BIBF- and PTX-loaded NPs as a therapeutic opportunity for LOF p53 cancers.
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Affiliation(s)
- Kareem Ebeid
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Xiangbing Meng
- Department of Obstetrics and Gynecology, University of Iowa, Iowa City, IA, USA
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, USA
| | - Kristina W Thiel
- Department of Obstetrics and Gynecology, University of Iowa, Iowa City, IA, USA
| | - Anh-Vu Do
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Sean M Geary
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Angie S Morris
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Erica L Pham
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Amaraporn Wongrakpanich
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Yashpal S Chhonker
- Department of Pharmacy Practice, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Daryl J Murry
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
- Department of Pharmacy Practice, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kimberly K Leslie
- Department of Obstetrics and Gynecology, University of Iowa, Iowa City, IA, USA.
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, USA.
| | - Aliasger K Salem
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA.
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, USA.
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Price DF, Luscombe CN, Eddershaw PJ, Edwards CD, Gumbleton M. The Differential Absorption of a Series of P-Glycoprotein Substrates in Isolated Perfused Lungs from Mdr1a/1b Genetic Knockout Mice can be Attributed to Distinct Physico-Chemical Properties: an Insight into Predicting Transporter-Mediated, Pulmonary Specific Disposition. Pharm Res 2017; 34:2498-2516. [PMID: 28702798 PMCID: PMC5736782 DOI: 10.1007/s11095-017-2220-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 06/22/2017] [Indexed: 12/18/2022]
Abstract
PURPOSE To examine if pulmonary P-glycoprotein (P-gp) is functional in an intact lung; impeding the pulmonary absorption and increasing lung retention of P-gp substrates administered into the airways. Using calculated physico-chemical properties alone build a predictive Quantitative Structure-Activity Relationship (QSAR) model distinguishing whether a substrate's pulmonary absorption would be limited by P-gp or not. METHODS A panel of 18 P-gp substrates were administered into the airways of an isolated perfused mouse lung (IPML) model derived from Mdr1a/Mdr1b knockout mice. Parallel intestinal absorption studies were performed. Substrate physico-chemical profiling was undertaken. Using multivariate analysis a QSAR model was established. RESULTS A subset of P-gp substrates (10/18) displayed pulmonary kinetics influenced by lung P-gp. These substrates possessed distinct physico-chemical properties to those P-gp substrates unaffected by P-gp (8/18). Differential outcomes were not related to different intrinsic P-gp transporter kinetics. In the lung, in contrast to intestine, a higher degree of non-polar character is required of a P-gp substrate before the net effects of efflux become evident. The QSAR predictive model was applied to 129 substrates including eight marketed inhaled drugs, all these inhaled drugs were predicted to display P-gp dependent pulmonary disposition. CONCLUSIONS Lung P-gp can affect the pulmonary kinetics of a subset of P-gp substrates. Physico-chemical relationships determining the significance of P-gp to absorption in the lung are different to those operative in the intestine. Our QSAR framework may assist profiling of inhaled drug discovery candidates that are also P-gp substrates. The potential for P-gp mediated pulmonary disposition exists in the clinic.
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Affiliation(s)
- Daniel F Price
- Cardiff School of Pharmacy & Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff, CF10 3NB, UK
| | - Chris N Luscombe
- GlaxoSmithKline Medicines Research Centre, Stevenage, Hertfordshire, UK
| | - Peter J Eddershaw
- GlaxoSmithKline Medicines Research Centre, Stevenage, Hertfordshire, UK
| | - Chris D Edwards
- GlaxoSmithKline Medicines Research Centre, Stevenage, Hertfordshire, UK
| | - Mark Gumbleton
- Cardiff School of Pharmacy & Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff, CF10 3NB, UK.
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Doligalska M, Jóźwicka K, Donskow-Łysoniewska K, Kalinowska M. The antiparasitic activity of avenacosides against intestinal nematodes. Vet Parasitol 2017; 241:5-13. [PMID: 28579031 DOI: 10.1016/j.vetpar.2017.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 03/21/2017] [Accepted: 05/09/2017] [Indexed: 12/22/2022]
Abstract
Avena sativa L., 1753 (Poaceae) is used as feed for livestock and as a crop rotation agent. The purpose of the study was to examine the molecular mechanisms behind the antihelminth activity of the oat saponins avenacoside B (AveB) and 26-desglucoavenacoside B (26DGAveB) by evaluating their effect on Heligmosomoides bakeri, a parasitic nematode of mice. The avenacosides AveB and 26DGAveB were separated and purified from A. sativa green leaves, and their mycotoxic activity was confirmed against the fungus Trichoderma harzianum. The anti-nematode activity of the avenacosides was measured by egg hatching assay. In the surviving L3 larvae exposed to avenacosides, the expression of CED-9, a protein of the apoptosis pathway, was identified by Western blotting. The protein profile of L3 larvae was monitored by High Performance Liquid Chromatography (HPLC). The action of saponins on glycoprotein pump (Pgp) activity in L3 larvae was compared to that of the pump blocker Verapamil (VPL). A mouse model was used to measure the infectivity of L3 larvae exposed to AveB and 26DGAveB, and the outcome of the immune response. Both compounds induced morphological changes in larvae and blocked Pgp activity; however, only 26DGAveB provoked expression of CED-9. The infected mice displayed changes in the molecular pattern of larval proteins and enhanced IL-4 production, indicating that avenacosides reduced the infectivity of H. bakeri larvae. In avenacosides, the residue without glucose at the C26 position demonstrated greater anti-nematode activity. Our findings indicate that A. sativa compounds are natural products with anti-parasitic activity.
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Affiliation(s)
- Maria Doligalska
- Department of Parasitology, Faculty of Biology University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland.
| | - Kinga Jóźwicka
- Department of Parasitology, Faculty of Biology University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland.
| | | | - Małgorzata Kalinowska
- Department of Plant Biochemistry, Faculty of Biology University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland.
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Tang J, Ji H, Ren J, Li M, Zheng N, Wu L. Solid lipid nanoparticles with TPGS and Brij 78: A co-delivery vehicle of curcumin and piperine for reversing P-glycoprotein-mediated multidrug resistance in vitro. Oncol Lett 2016; 13:389-395. [PMID: 28123572 DOI: 10.3892/ol.2016.5421] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 10/24/2016] [Indexed: 12/12/2022] Open
Abstract
Multidrug resistance (MDR) is a main clinical hurdle for chemotherapy of cancer, and overexpression of P-glycoprotein (P-gp) is a key factor. In the present study, a new co-delivery system for reversing MDR was designed and developed. The system was composed of curcumin (Cur) and piperine (Pip) encapsulated in solid lipid nanoparticles (SLNs) with tocopheryl polyethylene glycol succinate (TPGS) and Brij 78 [(Cur+Pip)-SLNs]. TPGS and Brij 78 could sensitize MDR tumors by inhibiting the P-gp drug efflux system. The combination of Cur and Pip, when administered in SLNs formulations, resulted in a significant enhancement in cytotoxicity and allowed efficient intracellular delivery of the drugs in drug-resistant A2780/Taxol cells. This dual inhibitory strategy may have significant potential in the clinical management of MDR in cancer.
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Affiliation(s)
- Jingling Tang
- Department of Pharmaceutics, School of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Hongyu Ji
- Department of Pharmacy, The Second Affiliated Hospital, Harbin Medical University, Key Laboratory of Medications Research, College of Heilongjiang Province, Harbin, Heilongjiang 150086, P.R. China
| | - Jinmei Ren
- Department of Pharmaceutics, School of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China; Department of Pharmacy, The Second Affiliated Hospital, Harbin Medical University, Key Laboratory of Medications Research, College of Heilongjiang Province, Harbin, Heilongjiang 150086, P.R. China
| | - Mengting Li
- Department of Pharmaceutics, School of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China; Department of Pharmacy, The Second Affiliated Hospital, Harbin Medical University, Key Laboratory of Medications Research, College of Heilongjiang Province, Harbin, Heilongjiang 150086, P.R. China
| | - Nannan Zheng
- Department of Pharmaceutics, School of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Linhua Wu
- Department of Pharmaceutics, School of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China; Department of Pharmacy, The Second Affiliated Hospital, Harbin Medical University, Key Laboratory of Medications Research, College of Heilongjiang Province, Harbin, Heilongjiang 150086, P.R. China
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Yin H, Bai P, Miao P, Chen M, Hu J, Deng X, Yin J. Functional expressions of adenosine triphosphate-binding cassette transporters during the development of zebrafish embryos and their effects on the detoxification of cadmium chloride and β-naphthoflavone. J Appl Toxicol 2015; 36:925-35. [DOI: 10.1002/jat.3225] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 07/14/2015] [Accepted: 07/31/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Huancai Yin
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology; Chinese Academy of Sciences; Suzhou Jiangsu 215163 People's Republic of China
| | - Pengli Bai
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology; Chinese Academy of Sciences; Suzhou Jiangsu 215163 People's Republic of China
| | - Peng Miao
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology; Chinese Academy of Sciences; Suzhou Jiangsu 215163 People's Republic of China
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
| | - Mingli Chen
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology; Chinese Academy of Sciences; Suzhou Jiangsu 215163 People's Republic of China
| | - Jun Hu
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology; Chinese Academy of Sciences; Suzhou Jiangsu 215163 People's Republic of China
| | - Xudong Deng
- Department of Chemical Engineering; McMaster University; Hamilton Ontario L8S 4L7 Canada
| | - Jian Yin
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology; Chinese Academy of Sciences; Suzhou Jiangsu 215163 People's Republic of China
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Fardel O, Le Vee M, Jouan E, Denizot C, Parmentier Y. Nature and uses of fluorescent dyes for drug transporter studies. Expert Opin Drug Metab Toxicol 2015; 11:1233-51. [PMID: 26050735 DOI: 10.1517/17425255.2015.1053462] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Drug transporters are now recognized as major players involved in pharmacokinetics and toxicology. Methods for assessing their activity are important to consider, particularly owing to regulatory requirements with respect to inhibition of drug transporter activity and prediction of drug-drug interactions. In this context, the use of fluorescent-dye-based transport assays is likely to deserve attention. AREAS COVERED This review provides an overview of the nature of fluorescent dye substrates for ATP-binding cassette and solute carrier drug transporters. Their use for investigating drug transporter activity in cultured cells and clinical hematological samples, drug transporter inhibition, drug transporter imaging and drug transport at the organ level are summarized. EXPERT OPINION A wide range of fluorescent dyes is now available for use in various aspects of drug transporter studies. The use of these dyes for transporter analyses may, however, be hampered by classic pitfalls of fluorescence technology, such as quenching. Transporter-independent processes such as passive diffusion of dyes through plasma membrane or dye sequestration into subcellular compartments must also be considered, as well as the redundant handling by various distinct transporters of some fluorescent probes. Finally, standardization of dye-based transport assays remains an important on-going issue.
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Affiliation(s)
- Olivier Fardel
- Institut de Recherches en Santé, Environnement et Travail (IRSET) , UMR INSERM U1085, Faculté de Pharmacie, 2 Avenue du Pr Léon Bernard, 35043 Rennes , France
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25
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Patel MN, Lakkadwala S, Majrad MS, Injeti ER, Gollmer SM, Shah ZA, Boddu SHS, Nesamony J. Characterization and evaluation of 5-fluorouracil-loaded solid lipid nanoparticles prepared via a temperature-modulated solidification technique. AAPS PharmSciTech 2014; 15:1498-508. [PMID: 25035070 DOI: 10.1208/s12249-014-0168-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 05/14/2014] [Indexed: 01/09/2023] Open
Abstract
The aim of this research was to advance solid lipid nanoparticle (SLN) preparation methodology by preparing glyceryl monostearate (GMS) nanoparticles using a temperature-modulated solidification process. The technique was reproducible and prepared nanoparticles without the need of organic solvents. An anticancer agent, 5-fluorouracil (5-FU), was incorporated in the SLNs. The SLNs were characterized by particle size analysis, zeta potential analysis, differential scanning calorimetry (DSC), infrared spectroscopy, atomic force microscopy (AFM), transmission electron microscopy (TEM), drug encapsulation efficiency, in vitro drug release, and in vitro cell viability studies. Particle size of the SLN dispersion was below 100 nm, and that of redispersed lyophilizates was ~500 nm. DSC and infrared spectroscopy suggested that the degree of crystallinity did not decrease appreciably when compared to GMS. TEM and AFM images showed well-defined spherical to oval particles. The drug encapsulation efficiency was found to be approximately 46%. In vitro drug release studies showed that 80% of the encapsulated drug was released within 1 h. In vitro cell cultures were biocompatible with blank SLNs but demonstrated concentration-dependent changes in cell viability to 5-FU-loaded SLNs. The 5-FU-loaded SLNs can potentially be utilized in an anticancer drug delivery system.
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26
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Hill JE, Linder MK, Davies KS, Sawada GA, Morgan J, Ohulchanskyy TY, Detty MR. Selenorhodamine photosensitizers for photodynamic therapy of P-glycoprotein-expressing cancer cells. J Med Chem 2014; 57:8622-34. [PMID: 25250825 PMCID: PMC4207532 DOI: 10.1021/jm501259v] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We examined a series of selenorhodamines with amide and thioamide functionality at the 5-position of a 9-(2-thienyl) substituent on the selenorhodamine core for their potential as photosensitizers for photodynamic therapy (PDT) in P-glycoprotein (P-gp) expressing cells. These compounds were examined for their photophysical properties (absorption, fluorescence, and ability to generate singlet oxygen), for their uptake into Colo-26 cells in the absence or presence of verapamil, for their dark and phototoxicity toward Colo-26 cells, for their rates of transport in monolayers of multidrug-resistant, P-gp-overexpressing MDCKII-MDR1 cells, and for their colocalization with mitochondrial specific agents in Colo-26 cells. Thioamide derivatives 16b and 18b were more effective photosensitizers than amide derivatives 15b and 17b. Selenorhodamine thioamides 16b and 18b were useful in a combination therapy to treat Colo-26 cells in vitro: a synergistic therapeutic effect was observed when Colo-26 cells were exposed to PDT and treatment with the cancer drug doxorubicin.
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Affiliation(s)
- Jacqueline E Hill
- Department of Chemistry, University at Buffalo, The State University of New York , Buffalo, New York 14260-3000, United States
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27
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Crawford L, Putnam D. Synthesis and Characterization of Macromolecular Rhodamine Tethers and Their Interactions with P-Glycoprotein. Bioconjug Chem 2014; 25:1462-9. [DOI: 10.1021/bc5002196] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Lindsey Crawford
- School
of Chemical and Biomolecular Engineering and ‡Department of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - David Putnam
- School
of Chemical and Biomolecular Engineering and ‡Department of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
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28
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Bourgaux C, Couvreur P. Interactions of anticancer drugs with biomembranes: what can we learn from model membranes? J Control Release 2014; 190:127-38. [PMID: 24859379 DOI: 10.1016/j.jconrel.2014.05.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 05/05/2014] [Accepted: 05/07/2014] [Indexed: 10/25/2022]
Abstract
The interactions of anticancer drugs with cell membranes are of primary importance for drug transport, accumulation and activity. However, these interactions are very difficult to investigate because of the complexity of biological membranes. Lipid model membranes have therefore been built to gain insight into the collective role of lipids in drug-membrane interactions. Membranes can act as a barrier for drug molecules, sequester them or conversely may allow them to freely diffuse, thereby modulating the accumulation of drugs into cells. Lipid membranes also affect the ability of the efflux pump Pgp to bind and efflux anticancer drugs from cells. On the other hand, anticancer drugs can alter the structure and properties of lipid membranes, which are expected to influence the functioning of embedded proteins. The relevance of lipid model membranes to assess interactions between anticancer drugs and biomembranes is evidenced.
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Affiliation(s)
- Claudie Bourgaux
- Institut Galien-Paris Sud, UMR CNRS 8612, Faculté de Pharmacie, Université Paris-Sud, 5 rue J.B. Clément, 92 296 Châtenay-Malabry Cedex, France
| | - Patrick Couvreur
- Institut Galien-Paris Sud, UMR CNRS 8612, Faculté de Pharmacie, Université Paris-Sud, 5 rue J.B. Clément, 92 296 Châtenay-Malabry Cedex, France
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29
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Kunjachan S, Rychlik B, Storm G, Kiessling F, Lammers T. Multidrug resistance: Physiological principles and nanomedical solutions. Adv Drug Deliv Rev 2013; 65:1852-1865. [PMID: 24120954 DOI: 10.1016/j.addr.2013.09.018] [Citation(s) in RCA: 187] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 09/29/2013] [Accepted: 09/30/2013] [Indexed: 01/08/2023]
Abstract
Multidrug resistance (MDR) is a pathophysiological phenomenon employed by cancer cells which limits the prolonged and effective use of chemotherapeutic agents. MDR is primarily based on the over-expression of drug efflux pumps in the cellular membrane. Prominent examples of such efflux pumps, which belong to the ATP-binding cassette (ABC) superfamily of proteins, are Pgp (P-glycoprotein) and MRP (multidrug resistance-associated protein), nowadays officially known as ABCB1 and ABCC1. Over the years, several strategies have been evaluated to overcome MDR, based not only on the use of low-molecular-weight MDR modulators, but also on the implementation of 1-100(0) nm-sized drug delivery systems. In the present manuscript, after introducing the most important physiological principles of MDR, we summarize prototypic nanomedical strategies to overcome multidrug resistance, including the use of carrier materials with intrinsic anti-MDR properties, the use of nanomedicines to modify the mode of cellular uptake, and the co-formulation of chemotherapeutic drugs together with low- and high-molecular-weight MDR inhibitors within a single drug delivery system. While certain challenges still need to be overcome before such constructs and concepts can be widely applied in the clinic, the insights obtained and the progress made strongly suggest that nanomedicine formulations hold significant potential for improving the treatment of multidrug-resistant malignancies.
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Affiliation(s)
- Sijumon Kunjachan
- Department of Experimental Molecular Imaging, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Błażej Rychlik
- Cytometry Lab, Department of Molecular Biophysics, University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland
| | - Gert Storm
- Department of Controlled Drug Delivery, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, PO Box 217, 7500 AE, Enschede, The Netherlands
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Fabian Kiessling
- Department of Experimental Molecular Imaging, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Twan Lammers
- Department of Experimental Molecular Imaging, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
- Department of Controlled Drug Delivery, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, PO Box 217, 7500 AE, Enschede, The Netherlands
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Cole BJ, Hamdoun A, Epel D. Cost, effectiveness and environmental relevance of multidrug transporters in sea urchin embryos. ACTA ACUST UNITED AC 2013; 216:3896-905. [PMID: 23913944 DOI: 10.1242/jeb.090522] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
ATP-binding cassette transporters protect cells via efflux of xenobiotics and endogenous byproducts of detoxification. While the cost of this ATP-dependent extrusion is known at the molecular level, i.e. the ATP used for each efflux event, the overall cost to a cell or organism of operating this defense is unclear, especially as the cost of efflux changes depending on environmental conditions. During prolonged exposure to xenobiotics, multidrug transporter activity could be costly and ineffective because effluxed substrate molecules are not modified in the process and could thus undergo repeated cycles of efflux and re-entry. Here we use embryos of the purple sea urchin, Strongylocentrotus purpuratus, as a model to determine transport costs and benefits under environmentally relevant xenobiotic concentrations. Strikingly, our results show that efflux transporter activity costs less than 0.2% of total ATP usage, as a proportion of oxygen consumption. The benefits of transport, defined as the reduction in substrate accumulation due to transporter activity, depended largely, but not entirely, on the rate of passive flux of each substrate across the plasma membrane. One of the substrates tested exhibited rapid membrane permeation coupled with high rates of efflux, thus inducing rapid and futile cycles of efflux followed by re-entry of the substrate. This combination significantly reduced transporter effectiveness as a defense and increased costs even at relatively low substrate concentrations. Despite these effects with certain substrates, our results show that efflux transporters are a remarkably effective and low-cost first line of defense against exposure to environmentally relevant concentrations of xenobiotics.
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Affiliation(s)
- Bryan J Cole
- Bodega Marine Laboratory, University of California Davis, Bodega Bay, CA 94923, USA
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Ming X, Carver K, Fisher M, Noel R, Cintrat JC, Gillet D, Barbier J, Cao C, Bauman J, Juliano RL. The small molecule Retro-1 enhances the pharmacological actions of antisense and splice switching oligonucleotides. Nucleic Acids Res 2013; 41:3673-87. [PMID: 23396438 PMCID: PMC3616695 DOI: 10.1093/nar/gkt066] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The attainment of strong pharmacological effects with oligonucleotides is hampered by inefficient access of these molecules to their sites of action in the cytosol or nucleus. Attempts to address this problem with lipid or polymeric delivery systems have been only partially successful. Here, we describe a novel alternative approach involving the use of a non-toxic small molecule to enhance the pharmacological effects of oligonucleotides. The compound Retro-1 was discovered in a screen for small molecules that reduce the actions of bacterial toxins and has been shown to block the retrograde trafficking pathway. We demonstrate that Retro-1 can also substantially enhance the effectiveness of antisense and splice switching oligonucleotides in cell culture. This effect occurs at the level of intracellular trafficking or processing and is correlated with increased oligonucleotide accumulation in the nucleus but does not involve the perturbation of lysosomal compartments. We also show that Retro-1 can alter the effectiveness of splice switching oligonucleotides in the in vivo setting. These observations indicate that it is possible to enhance the pharmacological actions of oligonucleotides using non-toxic and non-lysosomotropic small molecule adjuncts.
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Affiliation(s)
- Xin Ming
- Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
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Yan X, Zhou Y, Liu S. Optical imaging of tumors with copper-labeled rhodamine derivatives by targeting mitochondria. Theranostics 2012; 2:988-98. [PMID: 23139726 PMCID: PMC3493204 DOI: 10.7150/thno.4818] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Accepted: 08/21/2012] [Indexed: 11/22/2022] Open
Abstract
In this study, we evaluated Cu(L1) in two xenografted tumor-bearing (U87MG and MDA-MB-435) animal models to prove the concept that Cu(II)-labeled rhodamine derivatives, Cu(L) (L = L1 - L4) are useful as selective fluorescent probes for tumor imaging. We found that both multidrug resistance (MDR) negative U87MG gliomas and MDR-positive MDA-MB-435 breast tumors could be visualized. Because of tissue attenuation, accurate quantification of tumor uptake was difficult by optical methods. Therefore, 64Cu(L) (L = L1 - L4) were evaluated to compare their biodistribution properties. It was found that all four 64Cu radiotracers had a high glioma uptake (64Cu(L1): 5.71± 1.43 %ID/g; 64Cu(L2): 5.98 ± 2.75 %ID/g; 64Cu(L3): 4.28 ± 1.45 %ID/g; and 64Cu(L4): 6.25 ± 3.42 %ID/g) with 64Cu(L1) showing the highest tumor/background ratios. In athymic nude mice bearing MDA-MB-435 breast cancer xenografts, 64Cu(L4) showed almost identical normal organ uptake to that in the glioma-bearing animals, but its breast tumor uptake (1.26 ± 0.10% ID/g) was significantly lower (p < 0.001) than that in the glioma (6.25 ± 3.42% ID/g) because of MDR Pgps (P-glycoproteins) and MRPs (multidrug resistance-associated proteins) overexpressed in the xenografted MDA-MB-435 breast tumors. Results from cellular staining assays showed that both Cu(L2) and Cu(L4) were able to localize in mitochondria of U87MG cells, and their tumor selectivity was caused by the elevated negative mitochondrial potential in U87MG glioma cells as compared to that in human fibroblast cells. On the basis of these results, it was concluded that Cu(L) (L = L1 - L4) are useful as selective fluorescent probes for cellular staining assays and optical tumor imaging while 64Cu(L) (L = L1 - L4) have the potential as PET radiotracers for tumor imaging. This study represents a good example of dual modality imaging (PET and optical) using two agents, 64Cu(L) and Cu(L), with identical chemical composition. Future research will focus on developing new fluorescent probes with longer wavelength and reduced liver uptake.
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A plausible explanation for enhanced bioavailability of P-gp substrates in presence of piperine: simulation for next generation of P-gp inhibitors. J Mol Model 2012; 19:227-38. [PMID: 22864626 DOI: 10.1007/s00894-012-1535-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Accepted: 07/10/2012] [Indexed: 10/28/2022]
Abstract
P-glycoprotein (P-gp) has a major role to play in drug pharmacokinetics and pharmacodynamics, since it effluxes many cytotoxic hydrophobic anticancer drugs from gastrointestinal tract, brain, liver and kidney. Piperine is known to enhance the bioavailability of curcumin, as a substrate of P-gp by at least 2000%. Besides these at least 50 other substrates and inhibitors of P-gp have been reported so far. All P-gp inhibitors have diverse structures. Although little is known about binding of some flavonoids and steroids at the NBD (nucleotide binding domain) of P-gp in the vicinity of ATP binding site inhibiting its hydrolysis, a valid explanation of how P-gp accommodates such a diverse set of inhibitors is still awaited. In the present study, piperine up to 100 μM has not shown observable cytotoxic effect on MDCK cell line, and it has been shown to accumulate rhodamine by fluorescence microscopy and fluorescent activated cell sorter in MDCK cells. Computational simulation for piperine and some first and second generation P-gp inhibitors has shown that these dock at the NBD site of P-gp. A comparative simulation study has been carried out regarding their docking and binding energies. Binding conformation of P-gp co-crystallized complexes with ADP, AMP-PNP (Adenylyl-imidodiphosphate), and ATP were compared with piperine. The receptor based E-pharmacophore of docked piperine has been simulated to find common features amongst P-gp inhibitors. Finally it has been concluded that piperine could be utilized as base molecule for design and development of safe non-toxic inhibitor of P-gp in order to enhance the bioavailability of most of its substrates.
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Orchard A, Schamerhorn GA, Calitree BD, Sawada GA, Loo TW, Bartlett MC, Clarke DM, Dettya MR. Thiorhodamines containing amide and thioamide functionality as inhibitors of the ATP-binding cassette drug transporter P-glycoprotein (ABCB1). Bioorg Med Chem 2012; 20:4290-302. [PMID: 22727780 PMCID: PMC3400123 DOI: 10.1016/j.bmc.2012.05.075] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 05/15/2012] [Accepted: 05/24/2012] [Indexed: 11/29/2022]
Abstract
Twelve thiorhodamine derivatives have been examined for their ability to stimulate the ATPase activity of purified human P-glycoprotein (P-gp)-His(10), to promote uptake of calcein AM and vinblastine into multidrug-resistant, P-gp-overexpressing MDCKII-MDR1 cells, and for their rates of transport in monolayers of multidrug-resistant, P-gp-overexpressing MDCKII-MDR1 cells. The thiorhodamine derivatives have structural diversity from amide and thioamide functionality (N,N-diethyl and N-piperidyl) at the 5-position of a 2-thienyl substituent on the thiorhodamine core and from diversity at the 3-amino substituent with N,N-dimethylamino, fused azadecalin (julolidyl), and fused N-methylcyclohexylamine (half-julolidyl) substituents. The julolidyl and half-julolidyl derivatives were more effective inhibitors of P-gp than the dimethylamino analogues. Amide-containing derivatives were transported much more rapidly than thioamide-containing derivatives.
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Affiliation(s)
- Alexandra Orchard
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - Gregory A. Schamerhorn
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - Brandon D. Calitree
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000
| | - Geri A. Sawada
- Drug Disposition, Eli Lilly and Company, Indianapolis, Indiana 46285
| | - Tip W. Loo
- Department of Medicine and Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - M. Claire Bartlett
- Department of Medicine and Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - David M. Clarke
- Department of Medicine and Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada
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35
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Sasaki H, Kawano R, Osaki T, Kamiya K, Takeuchi S. Single-vesicle estimation of ATP-binding cassette transporters in microfluidic channels. LAB ON A CHIP 2012; 12:702-704. [PMID: 22179619 DOI: 10.1039/c2lc21058d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have developed a method to analyze the substrate transport of ATP-binding cassette (ABC) transporters, which are associated with drug resistance in tumor cells. Our microfluidic method is well suited to the single-vesicle estimation of substrate transport and the rapid drug screening of ABC transporters. Using this method, we have demonstrated, for the first time, the analysis of substrate transport by a single transporter and performed drug-inhibition experiments in less than 3 h.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B
- ATP Binding Cassette Transporter, Subfamily B, Member 1/antagonists & inhibitors
- ATP Binding Cassette Transporter, Subfamily B, Member 1/chemistry
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Cell Line, Tumor
- Drug Resistance, Neoplasm
- Drug Screening Assays, Antitumor/instrumentation
- Drug Screening Assays, Antitumor/methods
- Humans
- Liposomes/chemistry
- Microfluidic Analytical Techniques/instrumentation
- Microfluidic Analytical Techniques/methods
- Neoplasms/chemistry
- Neoplasms/drug therapy
- Neoplasms/metabolism
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36
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Hackenberger BK, Velki M, Stepić S, Hackenberger DK. First evidence for the presence of efflux pump in the earthworm Eisenia andrei. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 75:40-45. [PMID: 22033226 DOI: 10.1016/j.ecoenv.2011.06.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 06/22/2011] [Accepted: 06/27/2011] [Indexed: 05/31/2023]
Abstract
Efflux pumps are transport proteins involved in the extrusion of toxic substrates from cells to the external environment. Activities of efflux pumps have been found in many organisms, however such activity has not been evidenced in earthworms. Adult Eisenia andrei earthworms were exposed to efflux modulators - verapamil (a known inhibitor of efflux pump protein) and dexamethasone (a known inducer of efflux activity) - and the amount of absorbed fluorescent dye rhodamine B was measured. The results showed that verapamil inhibited efflux activity and decreased removal of rhodamine B, whereas dexamethasone induced efflux activity and increased removal of rhodamine B. This is the first evidence of the presence of efflux pump in earthworm Eisenia andrei. Since earthworms are often used as test organisms due to their sensitive reactions towards environmental influences, the discovery of efflux pump activity can contribute to the better understanding of toxicity of certain pollutants.
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Predicting P-glycoprotein-mediated drug transport based on support vector machine and three-dimensional crystal structure of P-glycoprotein. PLoS One 2011; 6:e25815. [PMID: 21991360 PMCID: PMC3186768 DOI: 10.1371/journal.pone.0025815] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 09/11/2011] [Indexed: 01/16/2023] Open
Abstract
Human P-glycoprotein (P-gp) is an ATP-binding cassette multidrug transporter that confers resistance to a wide range of chemotherapeutic agents in cancer cells by active efflux of the drugs from cells. P-gp also plays a key role in limiting oral absorption and brain penetration and in facilitating biliary and renal elimination of structurally diverse drugs. Thus, identification of drugs or new molecular entities to be P-gp substrates is of vital importance for predicting the pharmacokinetics, efficacy, safety, or tissue levels of drugs or drug candidates. At present, publicly available, reliable in silico models predicting P-gp substrates are scarce. In this study, a support vector machine (SVM) method was developed to predict P-gp substrates and P-gp-substrate interactions, based on a training data set of 197 known P-gp substrates and non-substrates collected from the literature. We showed that the SVM method had a prediction accuracy of approximately 80% on an independent external validation data set of 32 compounds. A homology model of human P-gp based on the X-ray structure of mouse P-gp as a template has been constructed. We showed that molecular docking to the P-gp structures successfully predicted the geometry of P-gp-ligand complexes. Our SVM prediction and the molecular docking methods have been integrated into a free web server (http://pgp.althotas.com), which allows the users to predict whether a given compound is a P-gp substrate and how it binds to and interacts with P-gp. Utilization of such a web server may prove valuable for both rational drug design and screening.
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38
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Seeland S, Treiber A, Hafner M, Huwyler J. On-line identification of P-glycoprotein substrates by monitoring of extracellular acidification and respiration rates in living cells. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1808:1827-31. [DOI: 10.1016/j.bbamem.2011.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 03/10/2011] [Accepted: 03/11/2011] [Indexed: 10/18/2022]
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39
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Tan X, Yim SY, Uppu P, Kleinow KM. Enhanced bioaccumulation of dietary contaminants in catfish with exposure to the waterborne surfactant linear alkylbenzene sulfonate. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2010; 99:300-308. [PMID: 20541817 DOI: 10.1016/j.aquatox.2010.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2009] [Revised: 04/30/2010] [Accepted: 05/12/2010] [Indexed: 05/29/2023]
Abstract
Fish bioaccumulate a variety of contaminants and act as an exposure portal to the human consumer. Surfactants, known pharmaceutically to alter membrane permeability, change drug bioavailability and attenuate transporter function are also found in contaminant mixtures in the aquatic environment. The overall objective of this study was to determine if the surfactant C-12 linear alkylbenzene sulfonate (LAS) at environmentally relevant concentrations, alters the disposition and enhances bioaccumulation of co-exposed dietary xenobiotics in the catfish. Included for study were the carcinogen benzo(a)pyrene (BaP), pharmaceutical, ivermectin (IVM), and P-glycoprotein (P-gp) substrate rhodamine 123 (Rho-123), each exhibiting different dispositional footprints. Rho-123 transport into bile and membrane fluidity was examined in isolated perfused livers from control and LAS exposed catfish. Mass balance residue assessments were performed on catfish following in vivo exposure for 12 days to LAS in water at 0, 100 or 300 microg/L with 6 days of (3)H-IVM or (3)H-BaP gavage treatments. LAS at 1, 5 and 20 microM in the perfused liver, significantly decreased the transport of Rho-123 (1 microM) into bile by 18.6, 38.1 and 66.7%, respectively. Fluorescence anisotropy measurements demonstrated a 29.7% increase in fluidity at the (1 microM, 348 microg/L) LAS concentration. In vivo mass balance studies indicated that waterborne LAS (100 and 300 microg/L) increased the dietary dose remaining in fish by 39% and 78% for (3)H-IVM and 50 and 157% for (3)H-BaP. LAS at environmentally relevant concentrations altered the bioavailability and disposition of dietary xenobiotics in the catfish. Co-exposure with LAS increases xenobiotic bioaccumulation, potential toxicity of mixture components to the fish and the potential for residue transfer from fish to the consumer.
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Affiliation(s)
- Xiaobing Tan
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Skip Bertman Dr., Baton Rouge, LA 70803, USA
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40
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Ford RC, Kamis AB, Kerr ID, Callaghan R. The ABC Transporters: Structural Insights into Drug Transport. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/9783527627424.ch1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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41
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Aurade RM, Jayalakshmi SK, Sreeramulu K. P-glycoprotein ATPase from the resistant pest, Helicoverpa armigera: purification, characterization and effect of various insecticides on its transport function. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2010; 1798:1135-43. [PMID: 20188065 DOI: 10.1016/j.bbamem.2010.02.019] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2009] [Revised: 02/11/2010] [Accepted: 02/16/2010] [Indexed: 12/24/2022]
Abstract
Helicoverpa armigera is a major pest of agricultural crops and has developed resistance to various insecticides. A P-glycoprotein (Pgp) with ATPase activity likely to be involved in insecticide resistance was purified and characterized from insecticide-resistant H. armigera. The purification was 18-fold with 3% yield. The optimum pH and temperature were found to be 7.4 and 30-40 degrees C, respectively. Kinetic studies indicated that this enzyme had a K(m) value of 1.2mM for ATP. Pgp from H. armigera was partially sequenced and found to be homologous to conserved sequences of mammalian Pgps. Pesticides stimulated H. armigera Pgp ATPase activity with a maximum stimulation of up to 40%. Quenching of the intrinsic tryptophan fluorescence of purified Pgp was used to quantitate insecticide binding. Using the high-affinity fluorescent substrate, tetramethylrosamine, transport was monitored in real time in proteoliposomes containing H. armigera Pgp. The presence of Pgp could be one of the reasons for insecticide resistance in this pest.
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Affiliation(s)
- Ravindra M Aurade
- Department of Biochemistry, Gulbarga University, Gulbarga 585106, India
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42
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Malakoutikhah M, Prades R, Teixidó M, Giralt E. N-Methyl Phenylalanine-Rich Peptides as Highly Versatile Blood−Brain Barrier Shuttles. J Med Chem 2010; 53:2354-63. [DOI: 10.1021/jm901654x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Morteza Malakoutikhah
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
| | - Roger Prades
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
| | - Meritxell Teixidó
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
| | - Ernest Giralt
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
- Department of Organic Chemistry, University of Barcelona, Martí i Franquès 1-11, Barcelona, Spain
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43
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Panagiotopoulou V, Richardson G, Jensen OE, Rauch C. On a biophysical and mathematical model of Pgp-mediated multidrug resistance: understanding the “space–time” dimension of MDR. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2009; 39:201-11. [DOI: 10.1007/s00249-009-0555-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Revised: 10/05/2009] [Accepted: 10/09/2009] [Indexed: 11/28/2022]
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44
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Eckford PDW, Sharom FJ. ABC efflux pump-based resistance to chemotherapy drugs. Chem Rev 2009; 109:2989-3011. [PMID: 19583429 DOI: 10.1021/cr9000226] [Citation(s) in RCA: 457] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Paul D W Eckford
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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45
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Gannon MK, Holt JJ, Bennett SM, Wetzel BR, Loo TW, Bartlett MC, Clarke DM, Sawada GA, Higgins JW, Tombline G, Raub TJ, Detty MR. Rhodamine inhibitors of P-glycoprotein: an amide/thioamide "switch" for ATPase activity. J Med Chem 2009; 52:3328-41. [PMID: 19402665 DOI: 10.1021/jm900253g] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have examined 46 tetramethylrosamine/rhodamine derivatives with structural diversity in the heteroatom of the xanthylium core, the amino substituents of the 3- and 6-positions, and the alkyl, aryl, or heteroaryl group at the 9-substituent. These compounds were examined for affinity and ATPase stimulation in isolated MDR3 CL P-gp and human P-gp-His(10), for their ability to promote uptake of calcein AM and vinblastine in multidrug-resistant MDCKII-MDR1 cells, and for transport in monolayers of MDCKII-MDR1 cells. Thioamide 31-S gave K(M) of 0.087 microM in human P-gp. Small changes in structure among this set of compounds affected affinity as well as transport rate (or flux) even though all derivatives examined were substrates for P-gp. With isolated protein, tertiary amide groups dictate high affinity and high stimulation while tertiary thioamide groups give high affinity and inhibition of ATPase activity. In MDCKII-MDR1 cells, the tertiary thioamide-containing derivatives promote uptake of calcein AM and have very slow passive, absorptive, and secretory rates of transport relative to transport rates for tertiary amide-containing derivatives. Thioamide 31-S promoted uptake of calcein AM and inhibited efflux of vinblastine with IC(50)'s of approximately 2 microM in MDCKII-MDR1 cells.
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Affiliation(s)
- Michael K Gannon
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA
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46
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Sawada GA, Raub TJ, William Higgins J, Brennan NK, Moore TM, Tombline G, Detty MR. Chalcogenopyrylium dyes as inhibitors/modulators of P-glycoprotein in multidrug-resistant cells. Bioorg Med Chem 2008; 16:9745-56. [PMID: 18849167 DOI: 10.1016/j.bmc.2008.09.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Revised: 09/24/2008] [Accepted: 09/26/2008] [Indexed: 10/21/2022]
Abstract
A series of chalcogenopyrylium dyes were evaluated as modulators/inhibitors of P-glycoprotein (Pgp). Their ability to inhibit verapamil (VER)-dependent ATPase activity (IC(50) values) in lipid-activated, mouse Cys-less mdr3 Pgp was determined. Their ability to promote calcein-AM (CAM) uptake in MDCKII-MDR1 cells and their capacity to be transported by Pgp in monolayers of MDCKII-MDR1 cells were also evaluated. The chalcogenopyrylium dyes promoted CAM uptake with values of EC(50) between 5 x 10(-6) and 3.5 x 10(-5)M and 7 of the 9 dyes examined in transport studies were substrates for Pgp with efflux ratios (P(BA/AB)) between 14 and 390. Binding of three compounds (1-S, 3-S, and 4-S) to Pgp was also assessed by fluorescence. These three thiopyrylium dyes showed increased fluorescence upon binding to Pgp, giving apparent binding constants, K(app), on the order of 10(-7) to 10(-6)M. Compound 8-Te was particularly intriguing since it appeared to influence Pgp at low micromolar concentrations as evidenced by its influence on VER-stimulated ATPase activity (IC(50) of 1.2 x 10(-6)M), CAM uptake (EC(50) of 5.4 x 10(-6)M), as well as [(3)H]-vinblastine transport by Pgp in cells (IC(50) of 4.3 x 10(-6)M) and within inside-out membrane vesicles (IC(50) of 9.6 x 10(-6)M). Yet, Pgp did not influence the distribution of 8-Te in MDCKII-MDR1 monolayers suggesting that 8-Te may bind to an allosteric site.
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Affiliation(s)
- Geri A Sawada
- Drug Disposition, Eli Lilly and Company, Indianapolis, IN 46285, USA
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47
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Tombline G, Holt JJ, Gannon MK, Donnelly DJ, Wetzel B, Sawada GA, Raub TJ, Detty MR. ATP occlusion by P-glycoprotein as a surrogate measure for drug coupling. Biochemistry 2008; 47:3294-307. [PMID: 18275155 DOI: 10.1021/bi7021393] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The multidrug efflux pump P-glycoprotein (Pgp) couples drug transport to ATP hydrolysis. Previously, using a synthetic library of tetramethylrosamine ( TMR) analogues, we observed significant variation in ATPase stimulation ( V m (D)). Concentrations required for half-maximal ATPase stimulation ( K m (D)) correlated with ATP hydrolysis transition-state stabilization and ATP occlusion (EC 50 (D)) at a single site. Herein, we characterize several TMR analogues that elicit modest turnover ( k cat <or= 1-2 s (-1)) compared to verapamil (VER) ( k cat approximately 10 s (-1)). Apparent ATPase activities manifest as nearly equivalent to basal values. In some cases, K m (D) parameters for drug stimulation of ATPase could not be accurately determined, yet these same TMR analogues promoted ATP occlusion at relatively low concentrations ( approximately 0.4-40 microM). Moreover, the TMR analogues competitively inhibited VER-dependent ATPase activity at concentrations similar to those required for ATP occlusion. Finally, the TMR analogues facilitated uptake of calcein-AM into CR1R12 and MDCK-MDR1 cells and are actively transported by Pgp in monolayers of MDCK-MDR1 cells at similarly low concentrations ( approximately 1-20 microM). ADP.V i release kinetics were identical in the presence of the TMR derivatives, VER, or in the absence of drug, suggesting that slow turnover is not likely due to slow release of the ATP hydrolysis products ADP and P i. These data support the partition model in which drug site occupancy converts residual basal ATPase activity to a drug-dependent mechanism even in cases where stimulation appears to be exactly compensatory to basal values. It is noteworthy that when compared to previously reported TMR analogues, subtle modification of the TMR scaffold can confer large differences in ATP turnover.
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Affiliation(s)
- Gregory Tombline
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA.
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48
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Regev R, Katzir H, Yeheskely-Hayon D, Eytan GD. Modulation of P-glycoprotein-mediated multidrug resistance by acceleration of passive drug permeation across the plasma membrane. FEBS J 2007; 274:6204-14. [DOI: 10.1111/j.1742-4658.2007.06140.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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49
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Sreeramulu K, Liu R, Sharom FJ. Interaction of insecticides with mammalian P-glycoprotein and their effect on its transport function. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2007; 1768:1750-7. [PMID: 17490606 DOI: 10.1016/j.bbamem.2007.04.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2006] [Revised: 03/26/2007] [Accepted: 04/02/2007] [Indexed: 11/21/2022]
Abstract
We studied the effects of four commonly used insecticides (methylparathion, endosulfan, cypermethrin and fenvalerate) on P-glycoprotein isolated from multidrug-resistant cells. All the pesticides stimulated P-glycoprotein ATPase activity, with maximum stimulation of up to 213% in a detergent-solubilized preparation, and up to 227% in reconstituted liposomes. The ATPase stimulation profiles were biphasic, displaying lower stimulation, and in the case of methylparathion, inhibition of activity, at higher insecticide concentrations. Quenching of the intrinsic Trp fluorescence of purified P-glycoprotein was used to quantitate insecticide binding; the estimated K(d) values fell in the range 4-6 microM. Transport of the fluorescent substrate tetramethylrosamine (TMR) into proteoliposomes containing P-glycoprotein was monitored in real time. The TMR concentration gradient generated by the transporter was collapsed by the addition of insecticides, and prior addition of these compounds prevented its formation. The rate of TMR transport was inhibited in a saturable fashion by all the compounds, indicating that they compete with the substrate for membrane translocation. Taken together, these data suggest that the insecticides bind to Pgp with high affinity and effectively block drug transport. Inhibition of Pgp by pesticides may compromise its ability to clear xenobiotics from the body, leading to a higher risk of toxicity.
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Affiliation(s)
- K Sreeramulu
- Department of Biochemistry, Gulbarga University, Gulbarga-585 106, India
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50
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Breuzard G, El-Khoury V, Millot C, Manfait M, Millot JM. Energy transfer to analyse membrane-integrated mitoxantrone in BCRP-overexpressed cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2007; 87:113-23. [PMID: 17433706 DOI: 10.1016/j.jphotobiol.2007.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2006] [Revised: 02/23/2007] [Accepted: 03/02/2007] [Indexed: 11/16/2022]
Abstract
The binding and the diffusion of mitoxantrone (MTX) through the plasma membrane was performed by Förster resonance energy transfer (FRET) from the membrane fluorescent donor (4Di-10ASP) to the co-localized acceptor MTX. The MTX addition to living 4Di-10ASP-tagged cells resulted in the rapid quenching of the probe emission (1s), revealing the MTX binding to the outer leaflet. Then, a slower quenching (about 90s) occurred which corresponded to the MTX flip-flop into the inner leaflet. Changes of MTX integration into the plasma membrane were described in BCRP-overexpressed cells (HCT-116R) treated with (i) the BCRP inhibitor fumitremorgin C (FTC), (ii) cyclosporin A (CSA) and (iii) benzyl alcohol (BA). Treatments with FTC or CSA showed 80% and 40% higher flip-flop of MTX from the outer to the inner leaflet of HCT-116R cells. The addition of BA clearly increased the MTX integration into both outer and inner leaflets. Confocal fluorescence microscopy displayed that FTC, CSA and BA enhanced MTX accumulation in HCT-116R. In conclusion, Fumitremorgin C and agents modulating MTX accumulation resulted in higher MTX integration in the resistant cell membrane and could disrupt the membrane cohesion. This energy transfer method appears well-adapted to describe the drug diffusion through the plasma membrane of living cells.
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Affiliation(s)
- Gilles Breuzard
- Unité MéDIAN CNRS UMR 6142, IFR53, UFR de Pharmacie, 51 rue Cognacq-Jay, 51096 Reims Cedex, France
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