Skip to main content

G protein-coupled receptor kinase regulates dopamine D3 receptor signaling by modulating the stability of a receptor-filamin-beta-arrestin complex. A case of autoreceptor regulation.

Publication ,  Journal Article
Kim, K-M; Gainetdinov, RR; Laporte, SA; Caron, MG; Barak, LS
Published in: J Biol Chem
April 1, 2005

In addition to its postsynaptic role, the dopamine D3 receptor (D3R) serves as a presynaptic autoreceptor, where it provides continuous feedback regulation of dopamine release at nerve terminals for processes as diverse as emotional tone and locomotion. D3R signaling ability is supported by an association with filamin (actin-binding protein 280), which localizes the receptor with G proteins in plasma membrane lipid rafts but is not appreciably antagonized in a classical sense by the ligand-mediated activation of G protein-coupled receptor kinases (GRKs) and beta-arrestins. In this study, we investigate GRK-mediated regulation of D3R.filamin complex stability and its effect on D3R.G protein signaling potential. Studies in HEK-293 cells show that in the absence of agonist the D3R immunoprecipitates in a complex containing both filamin A and beta-arrestin2. Moreover, the filamin directly interacts with beta-arrestin2 as assessed by immunoprecipitation and yeast two-hybrid studies. With reductions in basal GRK2/3 activity, an increase in the basal association of filamin A and beta-arrestin2 with D3R is observed. Conversely, increases in the basal GRK2/3 activity result in a reduction in the interaction between the D3R and filamin but a relative increase in the agonist-mediated interaction between beta-arrestin2 and the D3R. Our data suggest that the D3R, filamin A, and beta-arrestin form a signaling complex that is destabilized by agonist- or expression-mediated increases in GRK2/3 activity. These findings provide a novel GRK-based mechanism for regulating D3R signaling potential and provide insight for interpreting D3R autoreceptor behavior.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

J Biol Chem

DOI

ISSN

0021-9258

Publication Date

April 1, 2005

Volume

280

Issue

13

Start / End Page

12774 / 12780

Location

United States

Related Subject Headings

  • beta-Arrestins
  • beta-Adrenergic Receptor Kinases
  • Two-Hybrid System Techniques
  • Transfection
  • Signal Transduction
  • Receptors, Dopamine D3
  • Receptors, Dopamine D2
  • Protein Binding
  • Plasmids
  • Phosphorylation
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Kim, K.-M., Gainetdinov, R. R., Laporte, S. A., Caron, M. G., & Barak, L. S. (2005). G protein-coupled receptor kinase regulates dopamine D3 receptor signaling by modulating the stability of a receptor-filamin-beta-arrestin complex. A case of autoreceptor regulation. J Biol Chem, 280(13), 12774–12780. https://doi.org/10.1074/jbc.M408901200
Kim, Kyeong-Man, Raul R. Gainetdinov, Stephane A. Laporte, Marc G. Caron, and Larry S. Barak. “G protein-coupled receptor kinase regulates dopamine D3 receptor signaling by modulating the stability of a receptor-filamin-beta-arrestin complex. A case of autoreceptor regulation.J Biol Chem 280, no. 13 (April 1, 2005): 12774–80. https://doi.org/10.1074/jbc.M408901200.
Kim, Kyeong-Man, et al. “G protein-coupled receptor kinase regulates dopamine D3 receptor signaling by modulating the stability of a receptor-filamin-beta-arrestin complex. A case of autoreceptor regulation.J Biol Chem, vol. 280, no. 13, Apr. 2005, pp. 12774–80. Pubmed, doi:10.1074/jbc.M408901200.

Published In

J Biol Chem

DOI

ISSN

0021-9258

Publication Date

April 1, 2005

Volume

280

Issue

13

Start / End Page

12774 / 12780

Location

United States

Related Subject Headings

  • beta-Arrestins
  • beta-Adrenergic Receptor Kinases
  • Two-Hybrid System Techniques
  • Transfection
  • Signal Transduction
  • Receptors, Dopamine D3
  • Receptors, Dopamine D2
  • Protein Binding
  • Plasmids
  • Phosphorylation