کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1930154 | 1050489 | 2012 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Nucleolar stress characterized by downregulation of nucleophosmin: A novel cause of neuronal degeneration Nucleolar stress characterized by downregulation of nucleophosmin: A novel cause of neuronal degeneration](/preview/png/1930154.png)
Nucleophosmin (NPM) is a multifunctional nucleolar protein that has been linked with nucleolar stress. In non-neuronal cell lines, NPM may enhance or inhibit the activity of tumor suppressor p53, a major apoptotic protein. The relationship between NPM and p53 in the central nervous system (CNS) remains unknown. Here, we assessed the role of NPM in the CNS using a model of seizure-induced neurodegeneration. We show that NPM overexpression is neuroprotective against kainic acid-induced excitotoxicity, and that downregulation of NPM is pro-apoptotic in a p53-independent manner. These results suggest a key role for NPM in promoting neuronal survival and a novel mechanism of neuronal degeneration triggered by nucleolar stress.
► Kainic acid-induced excitotoxicity downregulates nucleophosmin in the central nervous system.
► Downregulation of nucleophosmin is associated with neuronal cell death in a p53-independent manner.
► Restoration of nucleophosmin level in the central nervous system is neuroprotective.
Journal: Biochemical and Biophysical Research Communications - Volume 417, Issue 1, 6 January 2012, Pages 514–520