Ligand-mediated regulation of kinin receptors in the rabbit.
Biol Chem
; 382(1): 131-3, 2001 Jan.
Article
em En
| MEDLINE
| ID: mdl-11258663
ABSTRACT
The kinin B1 receptors (B1Rs), stimulated by des-Arg9-kinins, are completely inducible, notably following treatment of animals with bacterial lipopolysaccharide. Several studies based on cultured cells have suggested a form of autoregulation of kinin receptors, because B2 receptor (B2R) or B1R stimulation could transcriptionally upregulate B1R expression. The B2R may rather be downregulated in inflammatory conditions. A rabbit B2R-green fluorescent protein (GFP) conjugate stably expressed in HEK 293 cells was rapidly internalized in response to the agonist bradykinin. Ligand-induced receptor cycling was documented applying confocal microscopy. The results confirm agonist-induced B2R endocytosis, but extensive recycling to the cell membrane does not support agonist-induced downregulation.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Receptores de Superfície Celular
/
Cininas
Limite:
Animals
/
Humans
Idioma:
En
Ano de publicação:
2001
Tipo de documento:
Article