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Calcium signaling cascade links dopamine D1–D2 receptor heteromer to striatal BDNF production and neuronal growth

Open access
Hasbi, Ahmed, Fan, Theresa, Alijaniaram, Mohammad, Nguyen, Tuan, Perreault, Melissa L., O'Dowd, Brian F., George, Susan R.·2009·Proceedings of the National Academy of Sciences

Abstract

Although the perturbation of either the dopaminergic system or brain-derived neurotrophic factor (BDNF) levels has been linked to important neurological and neuropsychiatric disorders, there is no known signaling pathway linking these two major players. We found that the exclusive stimulation of the dopamine D1–D2 receptor heteromer, which we identified in striatal neurons and adult rat brain by using confocal FRET, led to the activation of a signaling cascade that links dopamine signaling to BDNF production and neuronal growth through a cascade of four steps: ( i ) mobilization of intracellular calcium through Gq, phospholipase C, and inositol trisphosphate, ( ii ) rapid activation of cytosolic and nuclear calcium/calmodulin-dependent kinase IIα, ( iii ) increased BDNF expression, and ( iv ) accelerated morphological maturation and differentiation of striatal neurons, marked by increased microtubule-associated protein 2 production. These effects, although robust in striatal neurons from D5 −/− mice, were absent in neurons from D1 −/− mice. We also demonstrated that this signaling cascade was activated in adult rat brain, although with regional specificity, being largely limited to the nucleus accumbens. This dopaminergic pathway regulating neuronal growth and maturation through BDNF may have considerable significance in disorders such as drug addiction, schizophrenia, and depression.

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Metadata

Authors
Hasbi, A., Fan, T., Alijaniaram, M., Nguyen, T., Perreault, M. L., O'Dowd, B. F., & George, S. R.
Venue
Proceedings of the National Academy of Sciences
Published
2009-12-15
Volume
106
Issue
50
Pages
21377-21382
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2086909723
Cited by
273
References
6
FWCI
6.02
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Calcium signaling cascade links dopamine D1–D2 receptor heteromer to striatal BDNF production and neuronal growth. https://app.cochat.ai/papers/10.1073/pnas.0903676106
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Hasbi, A., Fan, T., Alijaniaram, M., Nguyen, T., Perreault, M. L., O'Dowd, B. F., & George, S. R. (2009). Calcium signaling cascade links dopamine D1–D2 receptor heteromer to striatal BDNF production and neuronal growth. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0903676106

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