RRC ID 60090
Author Antinucci P, Dumitrescu A, Deleuze C, Morley HJ, Leung K, Hagley T, Kubo F, Baier H, Bianco IH, Wyart C.
Title A calibrated optogenetic toolbox of stable zebrafish opsin lines.
Journal Elife
Abstract Optogenetic actuators with diverse spectral tuning, ion selectivity and kinetics are constantly being engineered providing powerful tools for controlling neural activity with subcellular resolution and millisecond precision. Achieving reliable and interpretable in vivo optogenetic manipulations requires reproducible actuator expression and calibration of photocurrents in target neurons. Here, we developed nine transgenic zebrafish lines for stable opsin expression and calibrated their efficacy in vivo. We first used high-throughput behavioural assays to compare opsin ability to elicit or silence neural activity. Next, we performed in vivo whole-cell electrophysiological recordings to quantify the amplitude and kinetics of photocurrents and test opsin ability to precisely control spiking. We observed substantial variation in efficacy, associated with differences in both opsin expression level and photocurrent characteristics, and identified conditions for optimal use of the most efficient opsins. Overall, our calibrated optogenetic toolkit will facilitate the design of controlled optogenetic circuit manipulations.
Volume 9
Published 2020-3-27
DOI 10.7554/eLife.54937
PII 54937
PMID 32216873
PMC PMC7170653
MeSH Animals Animals, Genetically Modified Calibration Chlorides / metabolism Escape Reaction Motor Neurons / physiology Opsins / genetics* Optogenetics* Proton Pumps / physiology Rhodopsin / physiology Trigeminal Ganglion / embryology Zebrafish / embryology
IF 7.551
Times Cited 0
Zebrafish Tg(chx10:Gal4), UAS:GFP