Reference : Study on the toxic mechanism of prion protein peptide 106-126 in neuronal and non neu...
Scientific journals : Article
Social & behavioral sciences, psychology : Neurosciences & behavior
http://hdl.handle.net/2268/26236
Study on the toxic mechanism of prion protein peptide 106-126 in neuronal and non neuronal cells
English
Dupiereux-Fettweis, Ingrid mailto [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Histologie humaine >]
Zorzi, Willy mailto [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Histologie humaine >]
Rachidi, W. [> > > >]
Zorzi, Danièle mailto [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques >]
Pierard, Olivier mailto [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Histologie humaine >]
Lhereux, B. [> > > >]
Heinen, Ernst mailto [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Histologie humaine >]
Elmoualij, Benaïssa mailto [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Histologie humaine >]
15-Aug-2006
Journal of Neuroscience Research
Wiley Liss, Inc.
84
3
637-646
Yes (verified by ORBi)
International
0360-4012
Hoboken
[en] cellular prion peptide ; 106-126 prion peptide ; lipid membrane ; neurotoxicity
[en] A synthetic peptide corresponding to the 106-126 amyloidogenic region of the cellular human prion protein (PrPc) is useful for in vitro study of prion-induced neuronal cell death. The aim of the present work was to examine the implication of the cellular prion protein in the toxicity mechanism induced by PrP 106-126. The effect of PrP 106-126 was investigated both on human neuroblastoma SH-SY5Y cells and on SH-SY5Y over-expressing murine cellular prions (wtPrP). We show by metabolic assay tests and ATP assays that PrPc expression does not modulate the toxicity of the prion peptide. Moreover, we investigated the effect of this peptide on an established non neuronal model, rabbit kidney epithelial A74 cells that express a doxycycline-inducible murine PrPc gene. We show for the first time that the prion peptide 106-126 does not exert any toxic effect on this cell line in the presence or absence of doxycycline. Our results show that the PrP 106-126-induced cell alteration is independent of PrPc expression. Rather, it seems to act via an interaction with lipidic components of the plasma membrane as strengthened by our results showing the differential susceptibility of neuronal and non neuronal cell lines that significantly differ by their membrane fatty acid composition. (c) 2006 Wiley-Liss, Inc.
http://hdl.handle.net/2268/26236

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