Journal
GENETICS
Volume 196, Issue 1, Pages 349-362Publisher
GENETICS SOCIETY AMERICA
DOI: 10.1534/genetics.113.158402
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Funding
- Swedish Research Council
- Ahlens Foundation
- Swedish Brain Research Foundation
- National Research Fund of Luxembourg
- Novo Nordisk Foundation
- Carl Tryggers Stiftelse
- Stiftelsen Olle Engkvist Byggm stare
- Stiftelsen Lars Hiertas Minne
- Novo Nordisk Fonden [NNF13OC0005723] Funding Source: researchfish
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In Drosophila, the monoamine octopamine, through mechanisms that are not completely understood, regulates both aggression and mating behavior. Interestingly, our study demonstrates that the Drosophila obesity-linked homologs Transcription factor AP-2 (TfAP-2; TFAP2B in humans) and Tiwaz (Twz; KCTD15 in humans) interact to modify male behavior by controlling the expression of Tyramine beta-hydroxylase and Vesicular monanime transporter, genes necessary for octopamine production and secretion. Furthermore, we reveal that octopamine in turn regulates aggression through the Drosophila cholecystokinin satiation hormone homolog Drosulfakinin (Dsk). Finally, we establish that TfAP-2 is expressed in octopaminergic neurons known to control aggressive behavior and that TfAP-2 requires functional Twz for its activity. We conclude that genetically manipulating the obesity-linked homologs TfAP-2 and Twz is sufficient to affect octopamine signaling, which in turn modulates Drosophila male behavior through the regulation of the satiation hormone Dsk.
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