Expression and immunolocalization of multidrug resistance protein 2 in rabbit small intestine

被引:37
作者
Van Aubel, RAMH
Hartog, A
Bindels, RJM
Van Os, CH
Russel, FGM
机构
[1] Catholic Univ Nijmegen, UMC St Radboud, Dept Pharmacol & Toxicol, NL-6500 HB Nijmegen, Netherlands
[2] Catholic Univ Nijmegen, UMC St Radboud, Dept Cell Physiol, NL-6500 HB Nijmegen, Netherlands
关键词
multidrug resistance protein; MRP2 (multidrug resistance protein 2); intestine;
D O I
10.1016/S0014-2999(00)00391-5
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Multidrug resistance protein 2 (MRP2) is an ATP-dependent transporter of anionic drugs and conjugates. It functions as an efflux pump in the apical membranes of liver and kidney cells, but its membrane localization in small intestine has not yet been defined. The present study demonstrates exclusive localization of Mrp2 to the brush-border (apical) membrane of villi, decreasing in intensity from the villus tip to the crypts. In immunoblot analysis of crude membranes of various rabbit tissues, Mrp2 was only found in small intestine, kidney and liver. These results are in-line with the supposed function of Mrp2 in drug excretion. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:195 / 198
页数:4
相关论文
共 21 条
[1]   The multidrug resistance protein family [J].
Borst, P ;
Evers, R ;
Kool, M ;
Wijnholds, J .
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES, 1999, 1461 (02) :347-357
[2]  
Cui YH, 1999, MOL PHARMACOL, V55, P929
[3]   Drug export activity of the human canalicular multispecific organic anion transporter in polarized kidney MDCK cells expressing cMOAT (MRP2) cDNA [J].
Evers, R ;
Kool, M ;
van Deemter, L ;
Janssen, H ;
Calafat, J ;
Oomen, LCJM ;
Paulusma, CC ;
Elferink, RPJO ;
Baas, F ;
Schinkel, AH ;
Borsi, P .
JOURNAL OF CLINICAL INVESTIGATION, 1998, 101 (07) :1310-1319
[4]  
Gotoh Y, 2000, J PHARMACOL EXP THER, V292, P433
[5]  
Hirohashi T, 2000, J PHARMACOL EXP THER, V292, P265
[6]  
Hooijberg JH, 1999, CANCER RES, V59, P2532
[7]   Molecular cloning of canalicular multispecific organic anion transporter defective in EHBR [J].
Ito, K ;
Suzuki, H ;
Hirohashi, T ;
Kume, K ;
Shimizu, T ;
Sugiyama, Y .
AMERICAN JOURNAL OF PHYSIOLOGY-GASTROINTESTINAL AND LIVER PHYSIOLOGY, 1997, 272 (01) :G16-G22
[8]   Functional analysis of a canalicular multispecific organic anion transporter cloned from rat liver [J].
Ito, K ;
Suzuki, H ;
Hirohashi, T ;
Kume, K ;
Shimizu, T ;
Sugiyama, Y .
JOURNAL OF BIOLOGICAL CHEMISTRY, 1998, 273 (03) :1684-1688
[9]  
Koike K, 1997, CANCER RES, V57, P5475
[10]   Conjugate export pumps of the multidrug resistance protein (MRP) family:: localization, substrate specificity, and MRP2-mediated drug resistance [J].
König, J ;
Nies, AT ;
Cui, YH ;
Leier, I ;
Keppler, D .
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES, 1999, 1461 (02) :377-394