Association of ABCA2 expression with determinants of Alzheimer's disease
- 20 May 2004
- journal article
- Published by Wiley in The FASEB Journal
- Vol. 18 (10) , 1129-1131
- https://doi.org/10.1096/fj.03-1490fje
Abstract
With the use of a novel method for detecting differential gene expression, alterations in functional gene clusters related to transport or oxidative stress response and β‐amyloid (Aβ) peptide metabolism were identified in a HEK293 cell line engineered to overexpress the human ATP binding cassette transporter ABCA2. These included fatty acid binding protein, phospholipid binding protein, phospholipid synthesis protein, transporter cofactors, seladin‐1, Aβ precursor protein (APP), vimentin, and low‐density lipoprotein receptor‐related protein. ABCA2 was highly expressed in neuroblastoma cells and colocalized with Aβ and APP. Additionally, increased APP protein levels were detected within ABCA2/APP double‐transfected cells, and increased Aβ was detected in the media of ABCA2‐transfected cells relative to controls. The transporter was abundant in the temporal and frontal regions of both normal and Alzheimer's disease (AD) brain but was detected at lower concentrations in the parietal, occipital, and cerebellar regions. The ABCA2 transfected cell line expressed resistance to a free radical initiator, confirming involvement in protection against reactive oxygen species and suggesting a further possible link to AD.Keywords
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