| Autor: |
Morikawa, Masayuki, Fryer, John D., Sullivan, Patrick M., Christopher, Erin A., Wahrle, Suzanne E., DeMattos, Ronald B., O'Dell, Mark A., Fagan, Anne M., Lashuel, Hilal A., Walz, Thomas, Asai, Kiyofumi, Holtzman, David M. |
| Předmět: |
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| Popis: |
The apolipoprotein E (apoE) genotype is an important genetic risk factor for Alzheimer's disease (AD). In the central nervous system (CNS), most apoE is produced by astrocytes and is present in unique high-density lipoprotein (HDL)-like particles that have distinct properties from apoE derived from other sources. To develop an efficient system to produce astrocyte-derived apoE in large quantities, we produced and characterized immortalized cell lines from primary astrocyte cultures derived from human APOE knock-in mice. APOE2, APOE3, and APOE4 expressing cell lines were established that secrete apoE in HDL-like particles at similar levels, cholesterol composition, and size as those produced by primary astrocytes. In physiological buffers, astrocyte-secreted apoE3 and E4 associated equally well with amyloid-beta. Under the same conditions, only a small fraction of A beta formed sodium dodecyl sulfate (SDS)-stable complexes with apoE (E3 > E4). These immortalized astrocytes will be useful for studying mechanisms underlying the isoform-specific effects of apoE in the CNS. |
| Databáze: |
OpenAIRE |
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