Protein aggregation into amyloid fibrils and protofibrillar aggregates is associated with a number of the most common neurodegenerative diseases. We have established, using a computational approach, that knowledge of the primary sequences of proteins is sufficient to predict their in vitro aggregation propensities. Here we demonstrate, using rational mutagenesis of the A beta(42) peptide based on such computational predictions of aggregation propensity, the existence of a strong correlation between the propensity of A beta(42) to form protofibrils and its effect on neuronal dysfunction and degeneration in a Drosophila model of Alzheimer disease. Our findings provide a quantitative description of the molecular basis for the pathogenicity of A beta and link directly and systematically the intrinsic properties of biomolecules, predicted in silico and confirmed in vitro, to pathogenic events taking place in a living organism.

Systematic in vivo analysis of the intrinsic determinants of amyloid Beta pathogenicity / L.M. LUHESHI; G.G TARTAGLIA; A.C. BRORRSON; A.P. PAWAR; I.A. WATSON; F. CHITI; M. VERNDRUSCOLO; D.A. LOMAS; C.M. DOBSON; D.C. CROWTHER. - In: PLOS BIOLOGY. - ISSN 1544-9173. - ELETTRONICO. - 5:(2007), pp. e290-e290. [10.1371/journal.pbio.0050290]

Systematic in vivo analysis of the intrinsic determinants of amyloid Beta pathogenicity

CHITI, FABRIZIO;
2007

Abstract

Protein aggregation into amyloid fibrils and protofibrillar aggregates is associated with a number of the most common neurodegenerative diseases. We have established, using a computational approach, that knowledge of the primary sequences of proteins is sufficient to predict their in vitro aggregation propensities. Here we demonstrate, using rational mutagenesis of the A beta(42) peptide based on such computational predictions of aggregation propensity, the existence of a strong correlation between the propensity of A beta(42) to form protofibrils and its effect on neuronal dysfunction and degeneration in a Drosophila model of Alzheimer disease. Our findings provide a quantitative description of the molecular basis for the pathogenicity of A beta and link directly and systematically the intrinsic properties of biomolecules, predicted in silico and confirmed in vitro, to pathogenic events taking place in a living organism.
2007
5
e290
e290
L.M. LUHESHI; G.G TARTAGLIA; A.C. BRORRSON; A.P. PAWAR; I.A. WATSON; F. CHITI; M. VERNDRUSCOLO; D.A. LOMAS; C.M. DOBSON; D.C. CROWTHER
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/315630
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