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Updated: Jun 15, 2026

Purification and Aggregation of the Amyloid Precursor Protein Intracellular Domain
Published on: August 28, 2012
Adenosine triphosphate binding cassette subfamily C member 1 (ABCC1) overexpression reduces APP processing and
Wayne M Jepsen1,2,3,4, Matthew De Both1, Ashley L Siniard1,2
1Neurogenomics Division, Translational Genomics Research Institute, 445 N. 5th St., Phoenix, AZ, 85004 USA.
Abstract:
The organic anion transporter Adenosine triphosphate binding cassette subfamily C member 1 (ABCC1), also known as MRP1, has been demonstrated in murine models of Alzheimer's disease (AD) to export amyloid beta (Abeta) from the endothelial cells of the blood-brain barrier to the periphery, and that pharmaceutical activation of ABCC1 can reduce amyloid plaque deposition in the brain. Here, we show that ABCC1 is not only capable of exporting Abeta from the cytoplasm of human cells, but also that its overexpression significantly reduces Abeta production and increases the ratio of alpha- versus beta-secretase mediated cleavage of the amyloid precursor protein (APP), likely via indirect modulation of alpha-, beta- and gamma-secretase activity.
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