Whole-organism behavioral profiling reveals a role for dopamine in state-dependent motor program coupling in C. elegans.

ELife
Nathan CermakSteven W Flavell

Abstract

Animal behaviors are commonly organized into long-lasting states that coordinately impact the generation of diverse motor outputs such as feeding, locomotion, and grooming. However, the neural mechanisms that coordinate these distinct motor programs remain poorly understood. Here, we examine how the distinct motor programs of the nematode C. elegans are coupled together across behavioral states. We describe a new imaging platform that permits automated, simultaneous quantification of each of the main C. elegans motor programs over hours or days. Analysis of these whole-organism behavioral profiles shows that the motor programs coordinately change as animals switch behavioral states. Utilizing genetics, optogenetics, and calcium imaging, we identify a new role for dopamine in coupling locomotion and egg-laying together across states. These results provide new insights into how the diverse motor programs throughout an organism are coordinated and suggest that neuromodulators like dopamine can couple motor circuits together in a state-dependent manner.

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Citations

Aug 13, 2020·Journal of Neurogenetics·Dennis H Kim, Steven W Flavell
Aug 13, 2020·Nature·Alison Abbott
Oct 8, 2020·Genetics·Steven W FlavellYoung-Jai You
Nov 11, 2020·Journal of Neurogenetics·Joy Alcedo, Veena Prahlad
Mar 3, 2021·Lab Animal·Cassandra BackesFilipe Cabreiro
May 7, 2021·Genetics·Steven W FlavellYoung-Jai You
Jul 9, 2021·Cytometry. Part a : the Journal of the International Society for Analytical Cytology·Haiwen LiHeng Mao
Oct 5, 2021·Frontiers in Cell and Developmental Biology·Andrea ScharfKerry Kornfeld

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Methods Mentioned

BETA
fluorescence imaging
transgenic
PCA
PCR
chip

Software Mentioned

LabView
R
ImageJ
OpenBuilds Parts Store
MATLAB
AccelStepper
hmmgenerate

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