A Forward Genetic Screen in Zebrafish Identifies the G-Protein-Coupled Receptor CaSR as a Modulator of Sensorimotor Decision Making

A Forward Genetic Screen in Zebrafish Identifies the G-Protein-Coupled Receptor CaSR as a Modulator of Sensorimotor Decision Making. Jain, R. A., Wolman, M. A., Marsden, K. C., Nelson, J. C., Shoenhard, H., Echeverry, F. A., Szi, C., Bell, H., Skinner, J., Cobbs, E. N., Sawada, K., Zamora, A. D., Pereda, A. E., & Granato, M. Current Biology, 28(9):1357–1369.e5, May, 2018. Publisher: Elsevier Ltd.

Paper doi abstract bibtex

Animals continuously integrate sensory information and select contextually appropriate responses. Here, we show that zebrafish larvae select a behavioral response to acoustic stimuli from a pre-existing choice repertoire in a context-dependent manner. We demonstrate that this sensorimotor choice is modulated by stimulus quality and history, as well as by neuromodulatory systems—all hallmarks of more complex decision making. Moreover, from a genetic screen coupled with whole-genome sequencing, we identified eight mutants with deficits in this sensorimotor choice, including mutants of the vertebrate-specific G-protein-coupled extracellular calcium-sensing receptor (CaSR), whose function in the nervous system is not well understood. We demonstrate that CaSR promotes sensorimotor decision making acutely through Gα i/o and Gα q/11 signaling, modulated by clathrin-mediated endocytosis. Combined, our results identify the first set of genes critical for behavioral choice modulation in a vertebrate and reveal an unexpected critical role for CaSR in sensorimotor decision making. Using larval zebrafish, Jain et al. establish and validate a simple sensorimotor decision-making paradigm. Using this paradigm, they perform a forward genetic screen that identifies the first set of vertebrate sensorimotor decision-making genes, including the calcium-sensing receptor, which acts as a bidirectional regulator of sensorimotor choice.

@article{jain_forward_2018,
	title = {A {Forward} {Genetic} {Screen} in {Zebrafish} {Identifies} the {G}-{Protein}-{Coupled} {Receptor} {CaSR} as a {Modulator} of {Sensorimotor} {Decision} {Making}},
	volume = {28},
	issn = {09609822},
	url = {https://doi.org/10.1016/j.cub.2018.03.025},
	doi = {10.1016/j.cub.2018.03.025},
	abstract = {Animals continuously integrate sensory information and select contextually appropriate responses. Here, we show that zebrafish larvae select a behavioral response to acoustic stimuli from a pre-existing choice repertoire in a context-dependent manner. We demonstrate that this sensorimotor choice is modulated by stimulus quality and history, as well as by neuromodulatory systems—all hallmarks of more complex decision making. Moreover, from a genetic screen coupled with whole-genome sequencing, we identified eight mutants with deficits in this sensorimotor choice, including mutants of the vertebrate-specific G-protein-coupled extracellular calcium-sensing receptor (CaSR), whose function in the nervous system is not well understood. We demonstrate that CaSR promotes sensorimotor decision making acutely through Gα i/o and Gα q/11 signaling, modulated by clathrin-mediated endocytosis. Combined, our results identify the first set of genes critical for behavioral choice modulation in a vertebrate and reveal an unexpected critical role for CaSR in sensorimotor decision making. Using larval zebrafish, Jain et al. establish and validate a simple sensorimotor decision-making paradigm. Using this paradigm, they perform a forward genetic screen that identifies the first set of vertebrate sensorimotor decision-making genes, including the calcium-sensing receptor, which acts as a bidirectional regulator of sensorimotor choice.},
	number = {9},
	journal = {Current Biology},
	author = {Jain, Roshan A. and Wolman, Marc A. and Marsden, Kurt C. and Nelson, Jessica C. and Shoenhard, Hannah and Echeverry, Fabio A. and Szi, Christina and Bell, Hannah and Skinner, Julianne and Cobbs, Emilia N. and Sawada, Keisuke and Zamora, Amy D. and Pereda, Alberto E. and Granato, Michael},
	month = may,
	year = {2018},
	note = {Publisher: Elsevier Ltd.},
	keywords = {AP2S1, CaSR, auditory, behavior choice, calcium-sensing receptor, decision making, genetic screen, startle response, zebrafish},
	pages = {1357--1369.e5},
}

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