Construction of Self-Assembling Lipopeptide-Based Benign Nanovesicles to Prevent Amyloid Fibril Formation and Reduce Cytotoxicity of GxxxGxxxGxxxG Motif.
Bioconjug Chem
; 33(6): 1201-1209, 2022 06 15.
Article
em En
| MEDLINE
| ID: mdl-35581017
ABSTRACT
Alzheimer's disease, a progressive severe neurodegenerative disorder, has been until now incurable, in spite of serious efforts worldwide. We have designed self-assembled myristoyl-KPGPK lipopeptide-based biocompatible nanovesicles, which can inhibit amyloid fibrillation made by the transmembrane GxxxGxxxGxxxG motif of Aß-protein and human myelin protein zero as well as reduce their neurotoxicity. Various spectroscopic and microscopic investigations illuminate that the lipopeptide-based nanovesicles dramatically inhibit random coil-to-ß-sheet transformation of Aß25-37 and human myelin protein zero protein precursor, which is the prerequisite of GxxxGxxxGxxxG motif-mediated fibril formation. Förster resonance energy transfer (FRET) assay using synthesized Cy-3 (FRET donor) and Cy-5 (FRET acceptor)-conjugated Aß25-37 also exhibits that nanovesicles strongly inhibit the fibril formation of Aß25-37. The mouse neuro-2a neuroblastoma cell line is used, which revealed the GxxxGxxxGxxxG-mediated cytotoxicity. However, the neurotoxicity has been diminished by co-incubating the GxxxGxxxGxxxG motif with the nanovesicles.
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
1_ASSA2030
Base de dados:
MEDLINE
Assunto principal:
Peptídeos beta-Amiloides
/
Doença de Alzheimer
Limite:
Animals
Idioma:
En
Revista:
Bioconjug Chem
Ano de publicação:
2022
Tipo de documento:
Article