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2015 ; 9
(ä): 78
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
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English Wikipedia
A 3D Searchable Database of Transgenic Zebrafish Gal4 and Cre Lines for
Functional Neuroanatomy Studies
#MMPMID26635538
Marquart GD
; Tabor KM
; Brown M
; Strykowski JL
; Varshney GK
; LaFave MC
; Mueller T
; Burgess SM
; Higashijima S
; Burgess HA
Front Neural Circuits
2015[]; 9
(ä): 78
PMID26635538
show ga
Transgenic methods enable the selective manipulation of neurons for functional
mapping of neuronal circuits. Using confocal microscopy, we have imaged the
cellular-level expression of 109 transgenic lines in live 6 day post
fertilization larvae, including 80 Gal4 enhancer trap lines, 9 Cre enhancer trap
lines and 20 transgenic lines that express fluorescent proteins in defined
gene-specific patterns. Image stacks were acquired at single micron resolution,
together with a broadly expressed neural marker, which we used to align enhancer
trap reporter patterns into a common 3-dimensional reference space. To facilitate
use of this resource, we have written software that enables searching for
transgenic lines that label cells within a selectable 3-dimensional region of
interest (ROI) or neuroanatomical area. This software also enables the
intersectional expression of transgenes to be predicted, a feature which we
validated by detecting cells with co-expression of Cre and Gal4. Many of the
imaged enhancer trap lines show intrinsic brain-specific expression. However, to
increase the utility of lines that also drive expression in non-neuronal tissue
we have designed a novel UAS reporter, that suppresses expression in heart,
muscle, and skin through the incorporation of microRNA binding sites in a
synthetic 3' untranslated region. Finally, we mapped the site of transgene
integration, thus providing molecular identification of the expression pattern
for most lines. Cumulatively, this library of enhancer trap lines provides
genetic access to 70% of the larval brain and is therefore a powerful and broadly
accessible tool for the dissection of neural circuits in larval zebrafish.