Primary investigation on heterodimerization of kappa-opioid receptor and ORL1 receptor / 药学学报
Acta Pharmaceutica Sinica
;
(12): 1078-1083, 2011.
Artigo
em Chinês
| WPRIM
| ID: wpr-233032
ABSTRACT
This study investigates whether kappa-opioid receptor and ORL1 receptor may interact to form a heterodimer. In immunofluorescence and co-immunoprecipitation experiments, differentially epitope-tagged receptors, colocalization and heterodimerization of kappa-opioid receptor and ORL1 receptor were used and examined in primary culturing rat neurons, Chinese hamster ovary (CHO) or human embryonic kidney 293 (HEK293) cells. The results show that fluorescence of both kappa-opioid receptor and ORL1 receptor were overlapping in primary culturing hippocampal and cortical neurons. Similarly in co-expressing CHO or HEK293 cells, HA-KOR and Myc-ORL1 were almost exclusively confined to the membranes, revealing extensive colocalization. When Flag-KOR and Myc-ORL1 were co-expressing in CHO cells, heterodimerization was identified to have the ability to co-immunoprecipitate ORL1-receptors with kappa-opioid receptor and vice versa. In the current study, further evidence was provided for the direct interaction of two subtypes of opioid receptors, kappa-opioid receptor and ORL1-receptor, to form the heterodimerization. The finding represents the novel pharmacological mechanism for modulation of opioid receptor function as well as diversity of G protein-coupled receptors.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Células Cultivadas
/
Córtex Cerebral
/
Cricetulus
/
Células CHO
/
Ratos Wistar
/
Receptores Opioides
/
Receptores Opioides kappa
/
Dimerização
/
Biologia Celular
/
Imunoprecipitação
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
/
Feminino
/
Humanos
/
Masculino
Idioma:
Chinês
Revista:
Acta Pharmaceutica Sinica
Ano de publicação:
2011
Tipo de documento:
Artigo
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