Dynamic interactions mediated by nonredundant signaling mechanisms couple circadian clock neurons.
Dynamic interactions mediated by nonredundant signaling mechanisms couple circadian clock neurons.
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DOI:
10.1016/j.neuron.2013.08.022
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发表时间:
2013-11-20
期刊:
影响因子:
16.2
通讯作者:
Davidson AJ
中科院分区:
文献类型:
--
作者:
Evans JA;Leise TL;Castanon-Cervantes O;Davidson AJ
Interactions among suprachiasmatic nucleus (SCN) neurons are required for robust circadian rhythms entrained to local time. To investigate these coupling mechanisms, we developed a novel functional coupling assay that uniquely captures the dynamic process by which SCN neurons interact. As a population, SCN neurons typically display synchronized rhythms with similar peak times, but will peak 6–12h apart after in vivo exposure to long days. Once removed from these conditions, SCN neurons resynchronize through a phase-dependent coupling process mediated by both vasoactive intestinal polypeptide (VIP) and GABAA signaling. Notably, GABAA signaling contributes to coupling when the SCN network in an anti-phase configuration, but opposes synchrony under steady-state conditions. Further, VIP acts together with GABAA signaling to couple the network in an anti-phase configuration, but promotes synchrony under steady-state conditions by counteracting the actions of GABAA signaling. Thus, SCN neurons interact through non-redundant coupling mechanisms influenced by the state of the network.
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DOI:
10.1523/jneurosci.3801-08.2009
发表时间:
2009-02-11
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Ciarleglio CM;Gamble KL;Axley JC;Strauss BR;Cohen JY;Colwell CS;McMahon DG
通讯作者:
McMahon DG
影响因子:
3.4
作者:
Dragich, Joanna M.;Loh, Dawn H.;Colwell, Christopher S.
通讯作者:
Colwell, Christopher S.
影响因子:
16.2
作者:
Freeman GM Jr;Krock RM;Aton SJ;Thaben P;Herzog ED
通讯作者:
Herzog ED
影响因子:
5.3
作者:
Hughes, AT;Fahey, B;Piggins, HD
通讯作者:
Piggins, HD
影响因子:
3.4
作者:
Baba, Kenkichi;Ono, Daisuke;Honma, Ken-ichi
通讯作者:
Honma, Ken-ichi