Multidrug resistance protein 1 (MRP1) encoded by ABCC1 gene.
MRP1 levels are elevated in numerous cancer types, NSCLC, breast cancer, and prostate cancer
Multidrug Resistance Protein 1 (MDR1), also known as P-glycoprotein (P-gp) or ABCB1, is a membrane protein that functions as an efflux pump, transporting a variety of drugs and xenobiotics out of cells. Its expression is a significant factor in the development of multidrug resistance (MDR) in cancer therapy.
Resistance Protein 1 (MDR1) is often upregulated in various cancers, and its high expression is associated with poor prognosis and protumorigenic effects due to its role in drug resistance.
| Field |
Suggested Entry |
| Target |
ABCC1 / MRP1 |
| Full Name |
ATP-binding cassette subfamily C member 1 / multidrug resistance-associated protein 1 |
| Target Class |
ATP-dependent ABC efflux transporter |
| Primary Biology |
Efflux of drugs, xenobiotics, organic anions, glutathione conjugates, oxidized glutathione, and inflammatory lipid mediators |
| Cancer Relevance |
High: contributes to multidrug resistance by exporting anticancer drugs and reducing intracellular drug accumulation |
| AD Relevance |
Medium: possible role in amyloid-β clearance and barrier transporter function, but less established than ABCB1/P-gp and LRP1 |
| Therapeutic Direction |
Context-dependent. In cancer, inhibition/down-modulation may improve chemotherapy retention in tumor cells. In AD, support/upregulation may be desirable if enhancing amyloid-β clearance. Systemic inhibition may increase normal-tissue toxicity. |
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