Inhibition of tau filament formation by conformational modulation.
J Am Chem Soc
; 135(7): 2853-62, 2013 Feb 20.
Article
en En
| MEDLINE
| ID: mdl-23360400
ABSTRACT
Antiaggregation drugs play an important role in therapeutic approaches for Alzheimer's disease. Although a large number of small molecules that inhibit the aggregation of the tau protein have been identified, little is known about their mode of action. Here, we reveal the mechanism and the nature of tau species that are generated by interaction of tau with the organic compound pthalocyanine tetrasulfonate (PcTS). We demonstrate that PcTS interferes with tau filament formation by targeting the protein into soluble oligomers. A combination of NMR spectroscopy, electron paramagnetic resonance, and small-angle X-ray scattering reveals that the soluble tau oligomers contain a dynamic, noncooperatively stabilized core with a diameter of 30-40 nm that is distinct from the core of tau filaments. Our results suggest that specific modulation of the conformation of tau is a viable strategy for reduction of pathogenic tau deposits.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Proteínas tau
/
Indoles
Límite:
Humans
Idioma:
En
Revista:
J Am Chem Soc
Año:
2013
Tipo del documento:
Article
País de afiliación:
Alemania