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Research ArticleArticle

Transport of Diclofenac by Breast Cancer Resistance Protein (ABCG2) and Stimulation of Multidrug Resistance Protein 2 (ABCC2)-Mediated Drug Transport by Diclofenac and Benzbromarone

Jurjen S. Lagas, Cornelia M. M. van der Kruijssen, Koen van de Wetering, Jos H. Beijnen and Alfred H. Schinkel
Drug Metabolism and Disposition January 2009, 37 (1) 129-136; DOI: https://doi.org/10.1124/dmd.108.023200
Jurjen S. Lagas
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Cornelia M. M. van der Kruijssen
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Koen van de Wetering
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Jos H. Beijnen
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Alfred H. Schinkel
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Abstract

Diclofenac is an important analgesic and anti-inflammatory drug, widely used for treatment of postoperative pain, rheumatoid arthritis, and chronic pain associated with cancer. Consequently, diclofenac is often used in combination regimens and undesirable drug-drug interactions may occur. Because many drug-drug interactions may occur at the level of drug transporting proteins, we studied interactions of diclofenac with apical ATP-binding cassette (ABC) multidrug efflux transporters. Using Madin-Darby canine kidney (MDCK)-II cells transfected with human P-glycoprotein (P-gp; MDR1/ABCB1), multidrug resistance protein 2 (MRP2/ABCC2), and breast cancer resistance protein (BCRP/ABCG2) and murine Bcrp1, we found that diclofenac was efficiently transported by murine Bcrp1 and moderately by human BCRP but not by P-gp or MRP2. Furthermore, in Sf9-BCRP membrane vesicles diclofenac inhibited transport of methotrexate in a concentration-dependent manner. We next used MDCK-II-MRP2 cells to study interactions of diclofenac with MRP2-mediated drug transport. Diclofenac stimulated paclitaxel, docetaxel, and saquinavir transport at only 50 μM. We further found that the uricosuric drug benzbromarone stimulated MRP2 at an even lower concentration, having maximal stimulatory activity at only 2 μM. Diclofenac and benzbromarone stimulated MRP2-mediated transport of amphipathic lipophilic drugs at 10- and 250-fold lower concentrations, respectively, than reported for other MRP2 stimulators. Because these concentrations are readily achieved in patients, adverse drug-drug interactions may occur, for example, during cancer therapy, in which drug concentrations are often critical and stimulation of elimination via MRP2 may result in suboptimal chemotherapeutic drug concentrations. Moreover, stimulation of MRP2 activity in tumors may lead to increased efflux of chemotherapeutic drugs and thereby drug resistance.

Footnotes

  • Article, publication date, and citation information can be found at http://dmd.aspetjournals.org.

  • doi:10.1124/dmd.108.023200.

  • ABBREVIATIONS: NSAID, nonsteroidal anti-inflammatory drug; MTX, methotrexate; ABC, ATP-binding cassette; MRP, multidrug resistance protein; MDCK, Madin-Darby canine kidney; P-gp, P-glycoprotein; BCRP, breast cancer resistance protein; GF120918, N-(4-[2-(1,2,3,4-tetrahydro-6,7-dimethoxy-2-isoquinolinyl)ethyl]-phenyl)-9,10-dihydro-5-methoxy-9-oxo-4-acridine carboxamide; Ko143, 3-(6-isobutyl-9-methoxy-1,4-dioxo-1,2,3,4,6,7,12,12α-octahydropyrazino[1′,2′:1,6]pryrido[3,4-b]indol-3-yl)-propionic acid tert-butyl ester; E217βG, estradiol-17β-glucuronide.

    • Received July 1, 2008.
    • Accepted October 8, 2008.
  • The American Society for Pharmacology and Experimental Therapeutics
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Drug Metabolism and Disposition: 37 (1)
Drug Metabolism and Disposition
Vol. 37, Issue 1
1 Jan 2009
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Research ArticleArticle

Transport of Diclofenac by Breast Cancer Resistance Protein (ABCG2) and Stimulation of Multidrug Resistance Protein 2 (ABCC2)-Mediated Drug Transport by Diclofenac and Benzbromarone

Jurjen S. Lagas, Cornelia M. M. van der Kruijssen, Koen van de Wetering, Jos H. Beijnen and Alfred H. Schinkel
Drug Metabolism and Disposition January 1, 2009, 37 (1) 129-136; DOI: https://doi.org/10.1124/dmd.108.023200

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Research ArticleArticle

Transport of Diclofenac by Breast Cancer Resistance Protein (ABCG2) and Stimulation of Multidrug Resistance Protein 2 (ABCC2)-Mediated Drug Transport by Diclofenac and Benzbromarone

Jurjen S. Lagas, Cornelia M. M. van der Kruijssen, Koen van de Wetering, Jos H. Beijnen and Alfred H. Schinkel
Drug Metabolism and Disposition January 1, 2009, 37 (1) 129-136; DOI: https://doi.org/10.1124/dmd.108.023200
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