A Single Set of Interneurons Drives Opposite Behaviors in C. elegans.
A Single Set of Interneurons Drives Opposite Behaviors in C. elegans.
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DOI:
10.1016/j.cub.2017.07.023
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发表时间:
2017-09-11
期刊:
影响因子:
--
通讯作者:
Hallem EA
中科院分区:
文献类型:
--
作者:
Guillermin ML;Carrillo MA;Hallem EA
Many chemosensory stimuli evoke innate behavioral responses that can be either appetitive or aversive depending on an animal’s age, prior experience, nutritional status, and environment. However, the circuit mechanisms that enable these valence changes are poorly understood. Here, we show that Caenorhabditis elegans can alternate between attractive or aversive responses to carbon dioxide (CO2) depending on its recently experienced CO2 environment. Both responses are mediated by a single pathway of interneurons. The CO2-evoked activity of these interneurons is subject to extreme experience-dependent modulation, enabling them to drive opposite behavioral responses to CO2. Other interneurons in the circuit regulate behavioral sensitivity to CO2 independent of valence. A combinatorial code of neuropeptides acts on the circuit to regulate both valence and sensitivity. Chemosensory valence-encoding interneurons exist across phyla, and valence is typically determined by whether appetitive or aversive interneuron populations are activated. Our results reveal an alternative mechanism of valence determination in which the same interneurons contribute to both attractive and aversive responses through modulation of sensory neuron to interneuron synapses. This circuit design represents a previously unrecognized mechanism for generating rapid changes in innate chemosensory valence.
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影响因子:
64.5
作者:
BARGMANN, CI;HARTWIEG, E;HORVITZ, HR
通讯作者:
HORVITZ, HR
DOI:
10.1073/pnas.0610877104
发表时间:
2007-02-13
影响因子:
11.1
作者:
Chelur, Dattananda S.;Chalfie, Martin
通讯作者:
Chalfie, Martin
影响因子:
64.8
作者:
Hendricks, Michael;Ha, Heonick;Maffey, Nicolas;Zhang, Yun
通讯作者:
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影响因子:
3.5
作者:
Dalton, P
通讯作者:
Dalton, P
DOI:
10.1523/jneurosci.4541-12.2013
发表时间:
2013-06-05
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Carrillo MA;Guillermin ML;Rengarajan S;Okubo RP;Hallem EA
通讯作者:
Hallem EA