4-Hydroxynonenal (4HNE) is the most prevalent toxic lipid peroxidation product formed during oxidative stress. It exerts its cytotoxicity mainly by the modification of intracellular proteins. The detection of 4HNE-modified proteins in several degenerative disorders suggests a role for 4HNE in the onset of these diseases. Efficient protection mechanisms are required to prevent the intracellular accumulation of 4HNE. The toxicity of 4HNE was tested with the small cell lung cancer cell lines GLC4 and the multidrug-resistance-protein (MRP1)-overexpressing counterpart GLC4/Adr. In the presence of the MRP1 inhibitor MK571 or the GSH-depleting agent buthionine sulphoximine, both cell lines became more sensitive and showed decreased survival. Transport experiments were performed with the 3H-labelled glutathione S-conjugate of 4HNE ([3H]GS-4HNE) with membrane vesicles from GLC4-derived cell lines with different expression levels of MRP1. [3H]GS-4HNE was taken up in an ATP-dependent manner and the transport rate was dependent on the amount of MRP1. The MRP1 inhibitor MK571 decreased [3H]GS-4HNE uptake. MRP1-specific [3H]GS-4HNE transport was demonstrated with membrane vesicles from High Five insect cells overexpressing recombinant MRP1. Kinetic experiments showed an apparent Km of 1.6±0.21µM (mean±S.D.) for MRP1-mediated [3H]GS-4HNE transport. In conclusion, MRP1 has a role in the protection against 4HNE toxicity and GS-4HNE is a novel MRP1 substrate. MRP1, together with GSH, is hypothesized to have a role in the defence against oxidative stress.
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September 2000
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Research Article|
August 23 2000
Multidrug resistance protein MRP1 protects against the toxicity of the major lipid peroxidation product 4-hydroxynonenal
Johan RENES;
Johan RENES
*Division of Gastroenterology and Hepatology, Groningen University Institute for Drug Exploration (GUIDE), University Hospital Groningen, NL-9700 RB Groningen, The Netherlands
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Elisabeth E. G. DE VRIES;
Elisabeth E. G. DE VRIES
†Division of Medical Oncology, Groningen University Institute for Drug Exploration (GUIDE), University Hospital Groningen, NL-9700 RB Groningen, The Netherlands
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Guido J. E. J. HOOIVELD;
Guido J. E. J. HOOIVELD
*Division of Gastroenterology and Hepatology, Groningen University Institute for Drug Exploration (GUIDE), University Hospital Groningen, NL-9700 RB Groningen, The Netherlands
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Inge KRIKKEN;
Inge KRIKKEN
*Division of Gastroenterology and Hepatology, Groningen University Institute for Drug Exploration (GUIDE), University Hospital Groningen, NL-9700 RB Groningen, The Netherlands
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Peter L. M. JANSEN;
Peter L. M. JANSEN
*Division of Gastroenterology and Hepatology, Groningen University Institute for Drug Exploration (GUIDE), University Hospital Groningen, NL-9700 RB Groningen, The Netherlands
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Michael MÜLLER
Michael MÜLLER
1
*Division of Gastroenterology and Hepatology, Groningen University Institute for Drug Exploration (GUIDE), University Hospital Groningen, NL-9700 RB Groningen, The Netherlands
1To whom correspondence should be addressed (e-mail m.muller@med.rug.nl).
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Publisher: Portland Press Ltd
Received:
February 29 2000
Revision Received:
May 22 2000
Accepted:
June 14 2000
Online ISSN: 1470-8728
Print ISSN: 0264-6021
The Biochemical Society, London © 2000
2000
Biochem J (2000) 350 (2): 555–561.
Article history
Received:
February 29 2000
Revision Received:
May 22 2000
Accepted:
June 14 2000
Citation
Johan RENES, Elisabeth E. G. DE VRIES, Guido J. E. J. HOOIVELD, Inge KRIKKEN, Peter L. M. JANSEN, Michael MÜLLER; Multidrug resistance protein MRP1 protects against the toxicity of the major lipid peroxidation product 4-hydroxynonenal. Biochem J 1 September 2000; 350 (2): 555–561. doi: https://doi.org/10.1042/bj3500555
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