RRC ID 372
Author Higashijima S, Masino MA, Mandel G, Fetcho JR.
Title Imaging neuronal activity during zebrafish behavior with a genetically encoded calcium indicator.
Journal J. Neurophysiol.
Abstract Genetically encoded calcium indicators, such as cameleon, have offered the promise of noninvasively monitoring activity of neurons, but no one has demonstrated whether these indicators can report calcium transients in neurons of behaving vertebrates. We show that cameleon can be expressed at high levels in sensory and spinal cord neurons in zebrafish by using neural-specific promoters in both transient expression experiments and in a stable transgenic line. Using standard confocal microscopy, calcium transients in identified motoneurons and spinal interneurons could be detected during escape behaviors produced by a touch on the head of the fish. Small movements of the restrained fish during the behavior did not represent a major problem for analyzing the calcium responses because of the ratiometric nature of cameleon. We conclude that cameleon can be used to noninvasively study the activity of neurons in an intact, behaving vertebrate. The ability to introduce an indicator genetically allows for studies of the functional roles of local interneurons that cannot easily be monitored with other approaches. Transgenic lines such as the one we generated can also be crossed into mutant lines of fish to study both structural and functional consequences of the mutations.
Volume 90(6)
Pages 3986-97
Published 2003-12
DOI 10.1152/jn.00576.2003
PII 00576.2003
PMID 12930818
MeSH Animals Animals, Genetically Modified Behavior, Animal / physiology* Calcium Signaling / physiology* Calcium-Binding Proteins* / biosynthesis DNA, Complementary / biosynthesis DNA, Complementary / genetics Drosophila Proteins* / biosynthesis Electric Stimulation Electrophysiology Embryo, Nonmammalian Escape Reaction / physiology Interneurons / physiology Microscopy, Confocal Motor Neurons / physiology Neurons / physiology* Patch-Clamp Techniques Plasmids / genetics Zebrafish / physiology*
IF 2.614
Times Cited 161
Zebrafish rw0 cf2?