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FGFR1-5-HT1A Heteroreceptor Complexes: Implications for Understanding and Treating Major Depression
Dasiel O Borroto-Escuela1, Alexander O Tarakanov2, Kjell Fuxe1
1Department of Neuroscience, Karolinska Institutet, Retzius väg 8, 17177 Stockholm, Sweden.
Trends in Neurosciences
|December 22, 2015
Summary
New research reveals fibroblast growth factor receptor 1 (FGFR1) and 5-hydroxytryptamine receptor 1A (5-HT1A) heterocomplexes may integrate depression hypotheses. These complexes enhance neuroplasticity and show potential as novel antidepressant targets.
Area of Science:
- Neuroscience
- Molecular Biology
- Pharmacology
Background:
- Established depression hypotheses include the serotonin and neurotrophic factor theories.
- Fibroblast growth factor receptor 1 (FGFR1) and 5-hydroxytryptamine receptor 1A (5-HT1A) heteroreceptor complexes have been identified.
Purpose of the Study:
- To investigate the role of FGFR1-5-HT1A heterocomplexes in integrating depression hypotheses.
- To explore the molecular mechanisms underlying the antidepressant effects of these complexes.
Main Methods:
- Identification and characterization of FGFR1-5-HT1A heterocomplexes in brain regions like the hippocampus and midbrain.
- Treatment with FGF2 and 5-HT1A agonists to study heterocomplex formation and signaling.
Main Results:
- FGFR1-5-HT1A heterocomplexes were found to enhance neuroplasticity.
- Combined FGF2 and 5-HT1A agonist treatment increased heterocomplex formation and FGFR1 signaling.
- These molecular interactions were associated with antidepressant effects.
Conclusions:
- FGFR1-5-HT1A heterocomplexes provide a molecular link between serotonin and neurotrophic factor hypotheses of depression.
- These complexes represent promising novel therapeutic targets for the development of antidepressants.
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