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Cited by 498

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Role of glutathione in the export of compounds from cells by the multidrug-resistance-associated protein.

Open access
Zaman, G J, Lankelma, J, van Tellingen, O, Beijnen, J, Dekker, H, Paulusma, C, Oude Elferink, R P, Baas, F, Borst, P·1995·Proceedings of the National Academy of Sciences

Abstract

Multidrug-resistance-associated protein (MRP) is a plasma membrane glycoprotein that can confer multidrug resistance (MDR) by lowering intracellular drug concentration. Here we demonstrate that depletion of intracellular glutathione by DL-buthionine (S,R)-sulfoximine results in a complete reversal of resistance to doxorubicin, daunorubicin, vincristine, and VP-16 in lung carcinoma cells transfected with a MRP cDNA expression vector. Glutathione depletion had less effect on MDR in cells transfected with MDR1 cDNA encoding P-glycoprotein and did not increase the passive uptake of daunorubicin by cells, indicating that the decrease of MRP-mediated MDR was not due to nonspecific membrane damage. Glutathione depletion resulted in a decreased efflux of daunorubicin from MRP-transfected cells, but not from MDR1-transfected cells, suggesting that glutathione is specifically required for the export of drugs from cells by MRP. We also show that MRP increases the export of glutathione from the cell and this increased export is further elevated in the presence of arsenite. Our results support the hypothesis that MRP functions as a glutathione S-conjugate carrier.

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Crossref · 10.1073/pnas.92.17.7690

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Metadata

Authors
Zaman, G. J., Lankelma, J., van Tellingen, O., Beijnen, J., Dekker, H., Paulusma, C., Oude Elferink, R. P., Baas, F., & Borst, P.
Venue
Proceedings of the National Academy of Sciences
Published
1995-08-15
Volume
92
Issue
17
Pages
7690-7694
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2012841076
Cited by
498
References
1
FWCI
16.06
Type
journal article
Language
en
Open access
green

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