PDF receptor expression reveals direct interactions between circadian oscillators in Drosophila.
PDF receptor expression reveals direct interactions between circadian oscillators in Drosophila.
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DOI:
10.1002/cne.22311
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发表时间:
2010-06-01
期刊:
影响因子:
--
通讯作者:
Taghert PH
中科院分区:
文献类型:
--
作者:
Im SH;Taghert PH
Daily rhythms of behavior are controlled by a circuit of circadian pacemaking neurons. In Drosophila, 150 pacemakers participate in this network, and recent observations suggest the network is divisible into M and E oscillators which normally interact and synchronize. Sixteen oscillator neurons (the small and large LNvs) express a neuropeptide called pigment dispersing factor (PDF) whose signaling is often equated with M oscillator output. Given the significance of PDF signaling to numerous aspects of behavioral and molecular rhythms, determining precisely where and how signaling via the PDF receptor (PDFR) occurs is now a central question in the field. Here we show that GAL4-mediated rescue of pdfr phenotypes using a UAS-PDFR transgene is insufficient to provide complete behavioral rescue. In contrast, we describe a ~70 kB PDF receptor (pdfr) transgene which does rescue the entire pdfr circadian behavioral phenotype. The transgene is widely but heterogeneously expressed among pacemakers, and also among a limited number of non-pacemakers. Our results support an important hypothesis: the small LNv cells directly target a subset of the other crucial pacemaker neurons cells. Furthermore, expression of the transgene confirms an autocrine feedback signaling by PDF back to PDF-expressing cells. Finally, the results present an unexpected PDF receptor site: the large LNv cells appear to target a population of non-neuronal cells that resides at the base of the eye.
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影响因子:
5.3
作者:
Harrisingh, Marie C.;Wu, Ying;Nitabach, Michael N.
通讯作者:
Nitabach, Michael N.
DOI:
10.1007/s003590050192
发表时间:
1998-04-01
期刊:
JOURNAL OF COMPARATIVE PHYSIOLOGY A-SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY
影响因子:
--
作者:
Helfrich-Förster, C
通讯作者:
Helfrich-Förster, C
影响因子:
64.8
作者:
Grima, B;Chèlot, E;Rouyer, F
通讯作者:
Rouyer, F
影响因子:
2.5
作者:
Helfrich-Foerster, Charlotte;Shafer, Orte T.;Taghert, Paul
通讯作者:
Taghert, Paul
影响因子:
2.5
作者:
Baker, Dean Adam;Beckingham, Kathleen Mary;Armstrong, James Douglas
通讯作者:
Armstrong, James Douglas