Caveolin-1 upregulation in senescent neurons alters amyloid precursor protein processing
Lipid rafts provide a platform for regulating cellular functions and participate in the pathogenesis of several diseases. However, the role of caveolin-1 in this process has not been elucidated definitely in neuron. Thus, this study was performed to examine whether caveolin-1 can regulate amyloid pr...
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Published in | Experimental & molecular medicine Vol. 38; no. 2; pp. 126 - 133 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Springer Nature B.V
30.04.2006
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Subjects | |
Online Access | Get full text |
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Summary: | Lipid rafts provide a platform for regulating cellular functions and participate in the pathogenesis of several diseases. However, the role of caveolin-1 in this process has not been elucidated definitely in neuron. Thus, this study was performed to examine whether caveolin-1 can regulate amyloid precursor protein (APP) processing in neuronal cells and to identify the molecular mechanisms involved in this regulation. Caveolin-1 is up-regulated in all parts of old rat brain, namely hippocampus, cerebral cortex and in elderly human cerebral cortex. Moreover, detergent-insoluble glycolipid (DIG) fractions indicated that caveolin-1 was co-localized with APP in caveolae-like structures. In DIG fractions, beta APP secretion was up-regulated by caveolin-1 over- expression, which was modulated via protein kinase C (PKC) in neuroblastoma cells. From these results we conclude that caveolin-1 is selectively expressed in senescent neurons and that it induces the processing of APP by beta-secretase via PKC downregulation. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1226-3613 2092-6413 2092-6413 |
DOI: | 10.1038/emm.2006.16 |