The multidrug resistance protein 1 (MRP1) encoded by ABCC1 was originally discovered as a cause of multidrug resistance in tumor cells. However, it is now clear that MRP1 serves a broader role than simply mediating the ATP-dependent efflux of drugs from cells. The antioxidant GSH and the pro-inflammatory cysteinyl leukotriene C4 have been identified as key physiological organic anions effluxed by MRP1, and an ever growing body of evidence indicates that additional lipid-derived mediators are also substrates of this transporter. As such, MRP1 is a multitasking transporter that likely influences the etiology and progression of a host of human diseases.
Keywords: ABC Transporter; Inflammation; Leukotriene; Lipid Signaling; Lipid Transport; Lysophospholipid; MRP1; Multidrug Transporter; Organic Anion Transport; Oxidative Stress.
© 2014 by The American Society for Biochemistry and Molecular Biology, Inc.