Transcellular transport of organic cations in double-transfected MDCK cells expressing human organic cation transporters hOCT1/hMATE1 and hOCT2/hMATE1

Tomoko Sato, Satohiro Masuda, Atsushi Yonezawa, Yuko Tanihara, Toshiya Katsura, Ken ichi Inui

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

To clarify the transcellular transport of organic cations via basolateral and apical transporters, we established double-transfected Madin-Darby canine kidney (MDCK) cells expressing both human organic cation transporter hOCT1 and hMATE1 (MDCK-hOCT1/hMATE1), and hOCT2 and hMATE1 (MDCK-hOCT2/hMATE1) as models of human hepatocytes and renal epithelial cells, respectively. Using the specific antibodies, hOCT1 and hMATE1 or hOCT2 and hMATE1 were found to be localized in the basolateral and apical membranes of MDCK-hOCT1/hMATE1 or MDCK-hOCT2/hMATE1 cells, respectively. A representative substrate, [14C]tetraethylammonium, was transported unidirectionally from the basolateral to apical side in these double transfectants. The optimal pH was showed to be 6.5 for the transcellular transport of [14C]tetraethylammonium, when the pH of the incubation medium on the apical side was varied from 5.5 to 8.5. The basolateral-to-apical transport also decreased in the presence of 10 mM 1-methyl-4-phenylpyridinium or 1 mM levofloxacin on the basolateral side of both double transfectants. In MDCK-hOCT2/hMATE1 cell monolayers, but not in MDCK-hOCT1/hMATE1 cell monolayers, the accumulation of [14C]tetraethylammonium was decreased in the presence of 10 mM 1-methyl-4-phenylpyridinium, but significantly increased in the presence of 1 mM levofloxacin. The uptake of [14C]tetraethylammonium, [3H]1-methyl-4-phenylpyridinium, [14C]metformin and [3H]cimetidine, but not of [14C]procainamide and [3H]quinidine, by HEK293 cells was stimulated by expression of the hOCT1, hOCT2 or hMATE1 compared to control cells. However, transcellular transport of [14C]procainamide and [3H]quinidine was clearly observed in both double-transfectants. These cells could be useful for examining the routes by which compounds are eliminated, or predicting transporter-mediated drug interaction.

Original languageEnglish
Pages (from-to)894-903
Number of pages10
JournalBiochemical Pharmacology
Volume76
Issue number7
DOIs
Publication statusPublished - Oct 1 2008
Externally publishedYes

Fingerprint

Transcytosis
Madin Darby Canine Kidney Cells
Tetraethylammonium
1-Methyl-4-phenylpyridinium
Cations
Cells
Canidae
Kidney
Procainamide
Levofloxacin
Quinidine
Monolayers
Drug interactions
Metformin
Cimetidine
HEK293 Cells
Drug Interactions
Hepatocytes
Membranes
Epithelial Cells

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Pharmacology

Cite this

Transcellular transport of organic cations in double-transfected MDCK cells expressing human organic cation transporters hOCT1/hMATE1 and hOCT2/hMATE1. / Sato, Tomoko; Masuda, Satohiro; Yonezawa, Atsushi; Tanihara, Yuko; Katsura, Toshiya; Inui, Ken ichi.

In: Biochemical Pharmacology, Vol. 76, No. 7, 01.10.2008, p. 894-903.

Research output: Contribution to journalArticle

Sato, Tomoko ; Masuda, Satohiro ; Yonezawa, Atsushi ; Tanihara, Yuko ; Katsura, Toshiya ; Inui, Ken ichi. / Transcellular transport of organic cations in double-transfected MDCK cells expressing human organic cation transporters hOCT1/hMATE1 and hOCT2/hMATE1. In: Biochemical Pharmacology. 2008 ; Vol. 76, No. 7. pp. 894-903.
@article{319b00dab86c41fd842ed8a8b11e3ab5,
title = "Transcellular transport of organic cations in double-transfected MDCK cells expressing human organic cation transporters hOCT1/hMATE1 and hOCT2/hMATE1",
abstract = "To clarify the transcellular transport of organic cations via basolateral and apical transporters, we established double-transfected Madin-Darby canine kidney (MDCK) cells expressing both human organic cation transporter hOCT1 and hMATE1 (MDCK-hOCT1/hMATE1), and hOCT2 and hMATE1 (MDCK-hOCT2/hMATE1) as models of human hepatocytes and renal epithelial cells, respectively. Using the specific antibodies, hOCT1 and hMATE1 or hOCT2 and hMATE1 were found to be localized in the basolateral and apical membranes of MDCK-hOCT1/hMATE1 or MDCK-hOCT2/hMATE1 cells, respectively. A representative substrate, [14C]tetraethylammonium, was transported unidirectionally from the basolateral to apical side in these double transfectants. The optimal pH was showed to be 6.5 for the transcellular transport of [14C]tetraethylammonium, when the pH of the incubation medium on the apical side was varied from 5.5 to 8.5. The basolateral-to-apical transport also decreased in the presence of 10 mM 1-methyl-4-phenylpyridinium or 1 mM levofloxacin on the basolateral side of both double transfectants. In MDCK-hOCT2/hMATE1 cell monolayers, but not in MDCK-hOCT1/hMATE1 cell monolayers, the accumulation of [14C]tetraethylammonium was decreased in the presence of 10 mM 1-methyl-4-phenylpyridinium, but significantly increased in the presence of 1 mM levofloxacin. The uptake of [14C]tetraethylammonium, [3H]1-methyl-4-phenylpyridinium, [14C]metformin and [3H]cimetidine, but not of [14C]procainamide and [3H]quinidine, by HEK293 cells was stimulated by expression of the hOCT1, hOCT2 or hMATE1 compared to control cells. However, transcellular transport of [14C]procainamide and [3H]quinidine was clearly observed in both double-transfectants. These cells could be useful for examining the routes by which compounds are eliminated, or predicting transporter-mediated drug interaction.",
author = "Tomoko Sato and Satohiro Masuda and Atsushi Yonezawa and Yuko Tanihara and Toshiya Katsura and Inui, {Ken ichi}",
year = "2008",
month = "10",
day = "1",
doi = "10.1016/j.bcp.2008.07.005",
language = "English",
volume = "76",
pages = "894--903",
journal = "Biochemical Pharmacology",
issn = "0006-2952",
publisher = "Elsevier Inc.",
number = "7",

}

TY - JOUR

T1 - Transcellular transport of organic cations in double-transfected MDCK cells expressing human organic cation transporters hOCT1/hMATE1 and hOCT2/hMATE1

AU - Sato, Tomoko

AU - Masuda, Satohiro

AU - Yonezawa, Atsushi

AU - Tanihara, Yuko

AU - Katsura, Toshiya

AU - Inui, Ken ichi

PY - 2008/10/1

Y1 - 2008/10/1

N2 - To clarify the transcellular transport of organic cations via basolateral and apical transporters, we established double-transfected Madin-Darby canine kidney (MDCK) cells expressing both human organic cation transporter hOCT1 and hMATE1 (MDCK-hOCT1/hMATE1), and hOCT2 and hMATE1 (MDCK-hOCT2/hMATE1) as models of human hepatocytes and renal epithelial cells, respectively. Using the specific antibodies, hOCT1 and hMATE1 or hOCT2 and hMATE1 were found to be localized in the basolateral and apical membranes of MDCK-hOCT1/hMATE1 or MDCK-hOCT2/hMATE1 cells, respectively. A representative substrate, [14C]tetraethylammonium, was transported unidirectionally from the basolateral to apical side in these double transfectants. The optimal pH was showed to be 6.5 for the transcellular transport of [14C]tetraethylammonium, when the pH of the incubation medium on the apical side was varied from 5.5 to 8.5. The basolateral-to-apical transport also decreased in the presence of 10 mM 1-methyl-4-phenylpyridinium or 1 mM levofloxacin on the basolateral side of both double transfectants. In MDCK-hOCT2/hMATE1 cell monolayers, but not in MDCK-hOCT1/hMATE1 cell monolayers, the accumulation of [14C]tetraethylammonium was decreased in the presence of 10 mM 1-methyl-4-phenylpyridinium, but significantly increased in the presence of 1 mM levofloxacin. The uptake of [14C]tetraethylammonium, [3H]1-methyl-4-phenylpyridinium, [14C]metformin and [3H]cimetidine, but not of [14C]procainamide and [3H]quinidine, by HEK293 cells was stimulated by expression of the hOCT1, hOCT2 or hMATE1 compared to control cells. However, transcellular transport of [14C]procainamide and [3H]quinidine was clearly observed in both double-transfectants. These cells could be useful for examining the routes by which compounds are eliminated, or predicting transporter-mediated drug interaction.

AB - To clarify the transcellular transport of organic cations via basolateral and apical transporters, we established double-transfected Madin-Darby canine kidney (MDCK) cells expressing both human organic cation transporter hOCT1 and hMATE1 (MDCK-hOCT1/hMATE1), and hOCT2 and hMATE1 (MDCK-hOCT2/hMATE1) as models of human hepatocytes and renal epithelial cells, respectively. Using the specific antibodies, hOCT1 and hMATE1 or hOCT2 and hMATE1 were found to be localized in the basolateral and apical membranes of MDCK-hOCT1/hMATE1 or MDCK-hOCT2/hMATE1 cells, respectively. A representative substrate, [14C]tetraethylammonium, was transported unidirectionally from the basolateral to apical side in these double transfectants. The optimal pH was showed to be 6.5 for the transcellular transport of [14C]tetraethylammonium, when the pH of the incubation medium on the apical side was varied from 5.5 to 8.5. The basolateral-to-apical transport also decreased in the presence of 10 mM 1-methyl-4-phenylpyridinium or 1 mM levofloxacin on the basolateral side of both double transfectants. In MDCK-hOCT2/hMATE1 cell monolayers, but not in MDCK-hOCT1/hMATE1 cell monolayers, the accumulation of [14C]tetraethylammonium was decreased in the presence of 10 mM 1-methyl-4-phenylpyridinium, but significantly increased in the presence of 1 mM levofloxacin. The uptake of [14C]tetraethylammonium, [3H]1-methyl-4-phenylpyridinium, [14C]metformin and [3H]cimetidine, but not of [14C]procainamide and [3H]quinidine, by HEK293 cells was stimulated by expression of the hOCT1, hOCT2 or hMATE1 compared to control cells. However, transcellular transport of [14C]procainamide and [3H]quinidine was clearly observed in both double-transfectants. These cells could be useful for examining the routes by which compounds are eliminated, or predicting transporter-mediated drug interaction.

UR - http://www.scopus.com/inward/record.url?scp=51249105551&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=51249105551&partnerID=8YFLogxK

U2 - 10.1016/j.bcp.2008.07.005

DO - 10.1016/j.bcp.2008.07.005

M3 - Article

C2 - 18674516

AN - SCOPUS:51249105551

VL - 76

SP - 894

EP - 903

JO - Biochemical Pharmacology

JF - Biochemical Pharmacology

SN - 0006-2952

IS - 7

ER -