کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10771418 | 1050841 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phosphorylated IκBα is a component of Lewy body of Parkinson's disease
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Ubiquitin is one of the major components of Lewy bodies (LB), the pathological hallmark of Parkinson's disease (PD). Here, we identified that a phosphorylated form of IκBα (pIκBα), an inhibitor of NF-κB, and SCFβ-TrCP, the ubiquitin ligase of pIκBα, are components of LB in brains of PD patients. In vitro studies identified those proteins in the ubiquitin- and α-synuclein (known as the major component of LB)-positive LB-like inclusions generated in dopaminergic SH-SY5Y cells treated with MG132, a proteasome inhibitor. Intriguingly, IκBα migration into such ubiquitinated inclusions in cells treated with MG132 was inhibited by a cell-permeable peptide known to block phosphorylation of IκBα, although this peptide did not influence cell viability under proteasomal inhibition. Our results indicate that phosphorylation of IκBα plays a role in the formation of IκBα-containing inclusions caused by proteasomal dysfunction, and that the generation of such inclusion is independent of cell death caused by impairment of proteasome.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 331, Issue 1, 27 May 2005, Pages 309-317
Journal: Biochemical and Biophysical Research Communications - Volume 331, Issue 1, 27 May 2005, Pages 309-317
نویسندگان
Kazuyuki Noda, Toshiaki Kitami, Wei Ping Gai, Fariba Chegini, Poul Henning Jensen, Tsutomu Fujimura, Kimie Murayama, Keiji Tanaka, Yoshikuni Mizuno, Nobutaka Hattori,