Drosophila pacemaker neurons require g protein signaling and GABAergic inputs to generate twenty-four hour behavioral rhythms.
Drosophila pacemaker neurons require g protein signaling and GABAergic inputs to generate twenty-four hour behavioral rhythms.
复制标题
DOI:
10.1016/j.neuron.2010.11.017
复制
发表时间:
2010-12-09
期刊:
影响因子:
16.2
通讯作者:
Blau J
中科院分区:
文献类型:
--
作者:
Dahdal D;Reeves DC;Ruben M;Akabas MH;Blau J
Intercellular signaling is important for accurate circadian rhythms. In Drosophila, the small ventral lateral neurons (s-LNvs) are the dominant pacemaker neurons and set the pace of most other clock neurons in constant darkness. Here we show that two distinct G-protein signaling pathways are required in LNvs for 24hr rhythms. Reducing signaling in LNvs via the G-alpha subunit Gs, which signals via cAMP, or via the G-alpha subunit Go, which we show signals via Phospholipase 21c, lengthens the period of behavioral rhythms. In contrast, constitutive Gs or Go signaling makes most flies arrhythmic. Using dissociated LNvs in culture, we found that Go and the metabotropic GABAB-R3 receptor are required for the inhibitory effects of GABA on LNvs and that reduced GABAB-R3 expression in vivo lengthens period. Although no clock neurons produce GABA, hyper-exciting GABAergic neurons disrupts behavioral rhythms and s-LNv molecular clocks. Therefore, s-LNvs require GABAergic inputs for 24hr rhythms.
登录
查看更多内容
影响因子:
5.3
作者:
Harrisingh, Marie C.;Wu, Ying;Nitabach, Michael N.
通讯作者:
Nitabach, Michael N.
影响因子:
64.5
作者:
Balsalobre, A;Damiola, F;Schibler, U
通讯作者:
Schibler, U
影响因子:
56.9
作者:
Dodd, Antony N.;Gardner, Michael J.;Webb, Alex A. R.
通讯作者:
Webb, Alex A. R.
DOI:
10.1002/cne.22311
发表时间:
2010-06-01
期刊:
The Journal of comparative neurology
影响因子:
--
作者:
Im SH;Taghert PH
通讯作者:
Taghert PH
DOI:
10.1523/jneurosci.2688-09.2010
发表时间:
2010-04-28
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Blanchard FJ;Collins B;Cyran SA;Hancock DH;Taylor MV;Blau J
通讯作者:
Blau J