RRC ID 55861
著者 Bhardwaj A, Thapliyal S, Dahiya Y, Babu K.
タイトル FLP-18 Functions through the G-Protein-Coupled Receptors NPR-1 and NPR-4 to Modulate Reversal Length in Caenorhabditis elegans.
ジャーナル J Neurosci
Abstract Animal behavior is critically dependent on the activity of neuropeptides. Reversals, one of the most conspicuous behaviors in Caenorhabditis elegans, plays an important role in determining the navigation strategy of the animal. Our experiments on hermaphrodite C. elegans show the involvement of a neuropeptide FLP-18 in modulating reversal length in these hermaphrodites. We show that FLP-18 controls the reversal length by regulating the activity of AVA interneurons through the G-protein-coupled neuropeptide receptors, NPR-4 and NPR-1. We go on to show that the site of action of these receptors is the AVA interneuron for NPR-4 and the ASE sensory neurons for NPR-1. We further show that mutants in the neuropeptide, flp-18, and its receptors show increased reversal lengths. Consistent with the behavioral data, calcium levels in the AVA neuron of freely reversing C. elegans were significantly higher and persisted for longer durations in flp-18, npr-1, npr-4, and npr-1 npr-4 genetic backgrounds compared with wild-type control animals. Finally, we show that increasing FLP-18 levels through genetic and physiological manipulations causes shorter reversal lengths. Together, our analysis suggests that the FLP-18/NPR-1/NPR-4 signaling is a pivotal point in the regulation of reversal length under varied genetic and environmental conditions.SIGNIFICANCE STATEMENT In this study, we elucidate the circuit and molecular machinery required for normal reversal behavior in hermaphrodite Caenorhabditis elegans We delineate the circuit and the neuropeptide receptors required for maintaining reversal length in C. elegans Our work sheds light on the importance of a single neuropeptide, FLP-18, and how change in levels in this one peptide could allow the animal to change the length of its reversal, thereby modulating how the C. elegans explores its environment. We also go on to show that FLP-18 functions to maintain reversal length through the neuropeptide receptors NPR-4 and NPR-1. Our study will allow for a better understanding of the complete repertoire of behaviors shown by freely moving animals as they explore their environment.
巻・号 38(20)
ページ 4641-4654
公開日 2018-5-16
DOI 10.1523/JNEUROSCI.1955-17.2018
PII JNEUROSCI.1955-17.2018
PMID 29712787
PMC PMC5965667
MeSH Animals Animals, Genetically Modified Behavior, Animal Caenorhabditis elegans / physiology* Caenorhabditis elegans Proteins / genetics Caenorhabditis elegans Proteins / physiology* Calcium / metabolism Interneurons / physiology Locomotion / physiology Mutation / genetics Mutation / physiology Neuropeptides / genetics Neuropeptides / physiology* Optogenetics Receptors, Neuropeptide / genetics Receptors, Neuropeptide / physiology* Receptors, Neuropeptide Y / genetics Receptors, Neuropeptide Y / physiology* Sensory Receptor Cells Signal Transduction / genetics Signal Transduction / physiology Starvation / genetics Starvation / psychology
IF 6.074
引用数 3
リソース情報
線虫 tm1782