Concept

Substance amyloïde

Publications associées (257)

Discovery and characterization of novel stable tau oligomeric complexes: Implications for the role of Tau/phospholipid interactions in regulating its functions in health and disease

Hilal Lashuel, Anne-Laure Mahul Mellier, Nadine Aït Bouziad, Gizem Zorludemir

The microtubule-associated protein Tau plays a central role in the pathogenesis of Alzheimer's disease. Although Tau interaction with membranes is thought to affect some of its physiological functions and its aggregation properties, the sequence determinan ...

Nature Publishing Group2017

Nanoplasmonic mid-infrared biosensor for in vitro protein secondary structure detection

Giovanni Dietler, Hilal Lashuel, Hatice Altug, Francesco Simone Ruggeri, Dordaneh Etezadi, John Blaine Warner IV

Plasmonic nanoantennas offer new applications in mid-infrared (mid-IR) absorption spectroscopy with ultrasensitive detection of structural signatures of biomolecules, such as proteins, due to their strong resonant near-fields. The amide I fingerprint of a ...

Springer Nature2017

Mutant Exon1 Huntingtin Aggregation is Regulated by T3 Phosphorylation-Induced Structural Changes and Crosstalk between T3 Phosphorylation and Acetylation at K6

Giovanni Dietler, Hilal Lashuel, Francesco Simone Ruggeri, Anass Chiki, Sean Michael Deguire, Urszula Beata Cendrowska, Annalisa Ansaloni, Ritwik Burai, Sophie Vieweg

Herein, we used protein semisynthesis to investigate, for the first time, the effect of lysine acetylation and phosphorylation, as well as the crosstalk between these modifications on the structure and aggregation of mutant huntingtin exon1 (Httex1). Our r ...

Wiley-Blackwell2017

Sequence and structural determinants of Tau aggregation and seeding capacity: Implications for Neurofibrillary Tangle formation and Tau toxicity in Alzheimer's disease

Nadine Aït Bouziad

Despite decades of research in Alzheimerâs disease (AD), no treatment has been found to efficiently prevent or cure its progression. The microtubule binding protein Tau plays central roles in the pathogenesis of AD and is found, in the form of paired hel ...

EPFL2017

Studying membrane-protein interplay by modeling realistic conditions

Martina Audagnotto

Realistic models of cellular environments have long captured the imagination of biologists and physical scientists. More than 20 years ago, Goodshellâs inspiring rendering of cellular environments provided the foundation for the idea of capturing the ful ...

EPFL2017

Polyglutamine expansion affects huntingtin conformation in multiple Huntington’s disease models

Hilal Lashuel, Lara Petricca, Sean Michael Deguire

Conformational changes in disease-associated or mutant proteins represent a key pathological aspect of Huntington's disease (HD) and other protein misfolding diseases. Using immunoassays and biophysical approaches, we and others have recently reported that ...

Springer Nature2017

Formation of Large Hypericin Aggregates in Giant Unilamellar Vesicles-Experiments and Modeling

Jaroslava Joniová, Veronika Huntosova

The incorporation of hypericin (Hyp) from aqueous solutions into giant unilamellar vesicle (GUV) membranes has been studied experimentally and by means of kinetic Monte Carlo modeling. The time evolution of Hyp fluorescence originating from Hyp monomers di ...

Cell Press2017

Discriminative adsorption of amphiphilic monolayer protected gold nanoparticles on amyloid fibers

Paulo Henrique Jacob Silva

This thesis presents a systematic study of how different types monolayer-protected AuNPs interact with amyloid fibers. We report a class of amphiphilic gold nanoparticles capable of adsorbing onto specific surface features on these types of protein fibers. ...

EPFL2016

Microtubule-Binding R3 Fragment from Tau Self-Assembles into Giant Multistranded Amyloid Ribbons

Hilal Lashuel, Nadine Aït Bouziad, Raffaele Mezzenga

Tau protein and its fragments self-assemble into amyloid fibrils in the presence of polyanions, such as heparin. By combining microscopy, scattering, and spectroscopy techniques, we studied the aggregation of the 26-mer Tau-derived peptide alone, Tau306-32 ...

Wiley-V C H Verlag Gmbh2016

A critical concentration of N-terminal pyroglutamylated amyloid beta drives the misfolding of Ab1-42 into more toxic aggregates

Giovanni Dietler, Francesco Simone Ruggeri

A wide consensus based on robust experimental evidence indicates pyroglutamylated amyloid-beta isoform (A beta pE3-42) as one of the most neurotoxic peptides involved in the onset of Alzheimer's disease. Furthermore, A beta pE3-42 co-oligomerized with exce ...

Elsevier2016

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