A synthetic HIV-1 protease inhibitor with antiviral activity arrests HIV-like particle maturation.
Science
; 247(4941): 454-6, 1990 Jan 26.
Article
en En
| MEDLINE
| ID: mdl-2405486
A synthetic peptidemimetic substrate of the human immunodeficiency virus 1 (HIV-1) protease with a nonhydrolyzable pseudodipeptidyl insert at the protease cleavage site was prepared. The peptide U-81749 inhibited recombinant HIV-1 protease in vitro (inhibition constant Ki of 70 nanomolar) and HIV-1 replication in human peripheral blood lymphocytes (inhibitory concentration IC50 of 0.1 to 1 micromolar). Moreover, 10 micromolar concentrations of U-81749 significantly inhibited proteolysis of the HIV-1 gag polyprotein (p55) to the mature viral structural proteins p24 and p17 in cells infected with a recombinant vaccinia virus expressing the HIV-1 gag-pol genes. The HIV-1 like particles released from inhibitor-treated cells contained almost exclusively p55 and other gag precursors, but not p24. Incubation of HIV-like particles recovered from drug-treated cultures in drug-free medium indicated that inhibition of p55 proteolysis was at least partially reversible, suggesting that U-81749 was present within the particles.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Antivirales
/
Oligopéptidos
/
Endopeptidasas
/
Inhibidores de Proteasas
/
VIH-1
Límite:
Humans
Idioma:
En
Revista:
Science
Año:
1990
Tipo del documento:
Article