A novel RRGW derived peptide is a promising inhibitor of BoNT/A.
J Enzyme Inhib Med Chem
; 38(1): 2203878, 2023 Dec.
Article
en En
| MEDLINE
| ID: mdl-37106479
ABSTRACT
Clostridium botulinum neurotoxin type A (BoNT/A) is one of the most potent biotoxins ever known. Its entry into neurons could block vesicle exocytosis to abolish the release of neurotransmitters from nerve terminals, thus leading to muscle paralysis. Although there are so many peptides, antibodies and chemical compounds claimed to have anti-toxin activity, no drug is available in the clinical application except equine antitoxin serum. In the present work, a short peptide inhibitor RRGW of BoNT/A was firstly identified by computer-aided ligand-receptor binding simulation, then an RRGW derived peptide was rational designed based on the fragment of SNAP-25 (141-206 aa). Proteolytic assay showed that the anti-toxin activity of the RRGW derived peptide was much higher than that of RRGW. Digit abduction score assay demonstrated that the derived peptide delayed BoNT/A-induced muscle paralysis at a lower concentration by 20-fold than RRGW. The results supported that RRGW derived peptide can be a potential BoNT/A inhibitor candidate for further treating botulism.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Botulismo
/
Toxinas Botulínicas Tipo A
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
J Enzyme Inhib Med Chem
Asunto de la revista:
BIOQUIMICA
/
QUIMICA
Año:
2023
Tipo del documento:
Article