PMID- 25505384 OWN - NLM STAT- MEDLINE DCOM- 20150730 LR - 20181113 IS - 1662-5110 (Electronic) IS - 1662-5110 (Linking) VI - 8 DP - 2014 TI - Prolonged, brain-wide expression of nuclear-localized GCaMP3 for functional circuit mapping. PG - 138 LID - 10.3389/fncir.2014.00138 [doi] LID - 138 AB - Larval zebrafish offer the potential for large-scale optical imaging of neural activity throughout the central nervous system; however, several barriers challenge their utility. First, ~panneuronal probe expression has to date only been demonstrated at early larval stages up to 7 days post-fertilization (dpf), precluding imaging at later time points when circuits are more mature. Second, nuclear exclusion of genetically-encoded calcium indicators (GECIs) limits the resolution of functional fluorescence signals collected during imaging. Here, we report the creation of transgenic zebrafish strains exhibiting robust, nuclearly targeted expression of GCaMP3 across the brain up to at least 14 dpf utilizing a previously described optimized Gal4-UAS system. We confirmed both nuclear targeting and functionality of the modified probe in vitro and measured its kinetics in response to action potentials (APs). We then demonstrated in vivo functionality of nuclear-localized GCaMP3 in transgenic zebrafish strains by identifying eye position-sensitive fluorescence fluctuations in caudal hindbrain neurons during spontaneous eye movements. Our methodological approach will facilitate studies of larval zebrafish circuitry by both improving resolution of functional Ca(2+) signals and by allowing brain-wide expression of improved GECIs, or potentially any probe, further into development. FAU - Kim, Christina K AU - Kim CK AD - Princeton Neuroscience Institute, Princeton University Princeton, NJ, USA ; Department of Molecular Biology, Princeton University Princeton, NJ, USA. FAU - Miri, Andrew AU - Miri A AD - Princeton Neuroscience Institute, Princeton University Princeton, NJ, USA ; Department of Molecular Biology, Princeton University Princeton, NJ, USA. FAU - Leung, Louis C AU - Leung LC AD - Department of Psychiatry and Behavioral Sciences, Stanford University Stanford, CA, USA ; Center for Sleep Sciences, Stanford University Stanford, CA, USA. FAU - Berndt, Andre AU - Berndt A AD - Department of Bioengineering, Stanford University Stanford, CA, USA. FAU - Mourrain, Philippe AU - Mourrain P AD - Department of Psychiatry and Behavioral Sciences, Stanford University Stanford, CA, USA ; Center for Sleep Sciences, Stanford University Stanford, CA, USA. FAU - Tank, David W AU - Tank DW AD - Princeton Neuroscience Institute, Princeton University Princeton, NJ, USA ; Department of Molecular Biology, Princeton University Princeton, NJ, USA. FAU - Burdine, Rebecca D AU - Burdine RD AD - Department of Molecular Biology, Princeton University Princeton, NJ, USA. LA - eng GR - 5R90DA023419-04/DA/NIDA NIH HHS/United States GR - R01 DK090065/DK/NIDDK NIH HHS/United States GR - R01 MH060651/MH/NIMH NIH HHS/United States GR - R90 DA023419/DA/NIDA NIH HHS/United States GR - NS062798/NS/NINDS NIH HHS/United States GR - R01 NS062798/NS/NINDS NIH HHS/United States GR - R01 MH099647/MH/NIMH NIH HHS/United States GR - R01HD048584/HD/NICHD NIH HHS/United States GR - Howard Hughes Medical Institute/United States GR - R01 HD048584/HD/NICHD NIH HHS/United States GR - DK090065/DK/NIDDK NIH HHS/United States GR - R56 DK090065/DK/NIDDK NIH HHS/United States GR - MH099647/MH/NIMH NIH HHS/United States GR - R01MH060651/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20141126 PL - Switzerland TA - Front Neural Circuits JT - Frontiers in neural circuits JID - 101477940 RN - 0 (Nerve Tissue Proteins) RN - 0 (Nuclear Proteins) RN - 0 (Zebrafish Proteins) SB - IM MH - Action Potentials/physiology MH - Animals MH - Animals, Genetically Modified MH - Brain/*physiology MH - Brain Mapping/*methods MH - Cell Nucleus/*metabolism MH - Cells, Cultured MH - Eye Movements/physiology MH - Fluorescence MH - HEK293 Cells MH - Humans MH - Nerve Tissue Proteins/genetics/*metabolism MH - Neural Pathways/physiology MH - Neurons/*physiology MH - Nuclear Proteins/genetics/*metabolism MH - Rats MH - Transfection MH - Zebrafish MH - Zebrafish Proteins/genetics/*metabolism PMC - PMC4244806 OTO - NOTNLM OT - brain-wide expression OT - genetically encoded calcium indicators OT - in vivo calcium imaging OT - nuclear calcium signals OT - transgenic zebrafish EDAT- 2014/12/17 06:00 MHDA- 2015/08/01 06:00 PMCR- 2014/01/01 CRDT- 2014/12/16 06:00 PHST- 2014/03/28 00:00 [received] PHST- 2014/11/06 00:00 [accepted] PHST- 2014/12/16 06:00 [entrez] PHST- 2014/12/17 06:00 [pubmed] PHST- 2015/08/01 06:00 [medline] PHST- 2014/01/01 00:00 [pmc-release] AID - 10.3389/fncir.2014.00138 [doi] PST - epublish SO - Front Neural Circuits. 2014 Nov 26;8:138. doi: 10.3389/fncir.2014.00138. eCollection 2014.