Antimicrobial therapeutic enhancement of levofloxacin via conjugation to a cell-penetrating peptide: An efficient sonochemical catalytic process.
J Pept Sci
; 26(10): e3277, 2020 Oct.
Article
en En
| MEDLINE
| ID: mdl-32729203
ABSTRACT
Herein, we make an effort to enhance the antimicrobial activity of levofloxacin (LVX) antibiotic via conjugation to a cell-penetrating peptide (CPP) including Cys-Gly-Ala-Phe-Pro-His-Arg. For this purpose, cysteine is used as a linker between the LVX and CPP chain, and two heterogeneous nanoscale catalytic systems are employed as the substantial alternatives for traditional peptide coupling reagents like N,N,N',N'-tetramethyl-O-(benzotriazol-1-yl)uronium tetrafluoroborate (TBTU). Briefly, it has been found out that the antimicrobial potency of the synthesized CPP-LVX conjugate (on the gram-positive and gram-negative bacteria) is noticeably enhanced (~20% more). It has been revealed via zone of inhibition (ZOI) and optical density (OD) evaluations. As a convenient method for making this type of the effective conjugations, ultrasound waves (with a specific frequency and power density) activate the catalytic sites of the heterogeneous nanoparticles. Through this synergistic effect, peptide/amide bond is formed during a short time (10 min), and high reaction yield (>90%) is obtained under mild conditions. Moreover, as a simple purification process, the catalyst nanoparticles are collected and separated through their high magnetic property.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Nanopartículas
/
Péptidos de Penetración Celular
/
Levofloxacino
/
Ondas Ultrasónicas
/
Antibacterianos
Idioma:
En
Revista:
J Pept Sci
Asunto de la revista:
BIOQUIMICA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Irán