Cu(II) Specifically Disassembles Insulin Amyloid Nanostructures via Direct Interaction with Cross-ß Fibrils.
Nano Lett
; 24(32): 9784-9792, 2024 Aug 14.
Article
em En
| MEDLINE
| ID: mdl-38990555
ABSTRACT
In this work, we demonstrate direct evidence of the antiamyloid potential of Cu(II) ions against amyloid formation of insulin. The Cu(II) ions were found to efficiently disassemble the preformed amyloid nanostructures into soluble species and suppress monomer fibrillation under aggregation-prone conditions. The direct interaction of Cu(II) ions with the cross-ß structure of amyloid fibrils causes substantial disruption of both the interchain and intrachain interactions, predominantly the H-bonds and hydrophobic contacts. Further, the Cu(II) ions show a strong affinity for the aggregation-prone conformers of the protein and inhibit their spontaneous self-assembly. These results reveal the possible molecular mechanism for the antiamyloidogenic potential of Cu(II) which could be important for the development of metal-ion specific therapeutic strategies against amyloid linked complications.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Cobre
/
Nanoestruturas
/
Amiloide
/
Insulina
Limite:
Humans
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article