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Natural Compounds against Neurodegenerative Diseases: Molecular Characterization of the Interaction of Catechins from Green Tea with Aβ1–42, PrP106–126, and Ataxin‐3 Oligomers
Author(s) -
Sironi Erika,
Colombo Laura,
Lompo Angela,
Messa Massimo,
Bonanomi Marcella,
Regonesi Maria Elena,
Salmona Mario,
Airoldi Cristina
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201403188
Subject(s) - circular dichroism , chemistry , moiety , rational design , amyloid (mycology) , in vivo , stereochemistry , biochemistry , biophysics , combinatorial chemistry , biology , nanotechnology , materials science , inorganic chemistry , microbiology and biotechnology
By combining NMR spectroscopy, transmission electron microscopy, and circular dichroism we have identified the structural determinants involved in the interaction of green tea catechins with Aβ1–42, PrP106–126, and ataxin‐3 oligomers. The data allow the elucidation of their mechanism of action, showing that the flavan‐3‐ol unit of catechins is essential for interaction. At the same time, the gallate moiety, when present, seems to increase the affinity for the target proteins. These results provide important information for the rational design of new compounds with anti‐amyloidogenic activity and/or molecular tools for the specific targeting of amyloid aggregates in vivo.