TY - JOUR
T1 - The GPS Motif Is a Molecular Switch for Bimodal Activities of Adhesion Class G Protein-Coupled Receptors
AU - Prömel, S.
AU - Frickenhaus, M.
AU - Hughes, S.
AU - Mestek, L.
AU - Staunton, D.
AU - Woollard, A.
AU - Vakonakis, I.
AU - Schöneberg, T.
AU - Schnabel, R.
AU - Russ, A.P.
AU - Langenhan, T.
PY - 2012/8/30
Y1 - 2012/8/30
N2 - Drosophila melanogaster flies concentrate behavioral activity around dawn and dusk. This organization of daily activity is controlled by central circadian clock neurons, including the lateral-ventral pacemaker neurons (LNvs) that secrete the neuropeptide PDF (pigment dispersing factor). Previous studies have demonstrated the requirement for PDF signaling to PDF receptor (PDFR)-expressing dorsal clock neurons in organizing circadian activity. Although LNvs also express functional PDFR, the role of these autoreceptors has remained enigmatic. Here, we show that (1) PDFR activation in LNvs shifts the balance of circadian activity from evening to morning, similar to behavioral responses to summer-like environmental conditions, and (2) this shift is mediated by stimulation of the Gα,s-cAMP pathway and a consequent change in PDF/neurotransmitter corelease from the LNvs. These results suggest another mechanism for environmental control of the allocation of circadian activity and provide new general insight into the role of neuropeptide autoreceptors in behavioral control circuits.
AB - Drosophila melanogaster flies concentrate behavioral activity around dawn and dusk. This organization of daily activity is controlled by central circadian clock neurons, including the lateral-ventral pacemaker neurons (LNvs) that secrete the neuropeptide PDF (pigment dispersing factor). Previous studies have demonstrated the requirement for PDF signaling to PDF receptor (PDFR)-expressing dorsal clock neurons in organizing circadian activity. Although LNvs also express functional PDFR, the role of these autoreceptors has remained enigmatic. Here, we show that (1) PDFR activation in LNvs shifts the balance of circadian activity from evening to morning, similar to behavioral responses to summer-like environmental conditions, and (2) this shift is mediated by stimulation of the Gα,s-cAMP pathway and a consequent change in PDF/neurotransmitter corelease from the LNvs. These results suggest another mechanism for environmental control of the allocation of circadian activity and provide new general insight into the role of neuropeptide autoreceptors in behavioral control circuits.
UR - https://www.scopus.com/pages/publications/84865768212
UR - https://www.scopus.com/inward/citedby.url?scp=84865768212&partnerID=8YFLogxK
U2 - 10.1016/j.celrep.2012.06.015
DO - 10.1016/j.celrep.2012.06.015
M3 - Article
SN - 2211-1247
VL - 2
SP - 321
EP - 331
JO - Cell Reports
JF - Cell Reports
IS - 2
ER -