Gal4 Drivers
Gal4 Drivers - Related Videos
13:34
Gene Trapping Using Gal4 in Zebrafish
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Cited by 19 •
2013
This protocol describes the method of gene trap insertional mutagenesis using Gal4-VP16 as the primary reporter and GFP/RFP as secondary reporters in zebrafish. Approximately one in ten high-expressing F0 fish yield gene trap progeny co-expressing GFP and RFP. The screening procedure can be readily scaled to adapt to the size of the laboratory performing the insertional mutagenesis screen.
06:29
Using the GAL4-UAS System for Functional Genetics in Anopheles gambiae
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Cited by 11 •
2021
The bipartite GAL4-UAS system is a versatile tool for modification of gene expression in a controlled spatiotemporal manner which permits functional genetic analysis in Anopheles gambiae. The procedures described for using this system are a semi-standardized cloning strategy, sexing and screening of pupae for fluorescent protein markers and embryo fixation.
08:32
Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
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2022
The protocol demonstrates a convenient method to produce harmonic oscillatory flow from 10-1000 Hz in microchannels. This is performed by interfacing a computer-controlled speaker diaphragm to the microchannel in a modular manner.
06:52
Discovery of Driver Genes in Colorectal HT29-derived Cancer Stem-Like Tumorspheres
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Cited by 1 •
2020
Presented here is a protocol to discover the overexpressed driver genes maintaining the established cancer stem-like cells derived from colorectal HT29 cells. RNAseq with available bioinformatics was performed to investigate and screen gene expression networks for elucidating a potential mechanism involved in the survival of targeted tumor cells.
09:29
Investigating Drivers of Antireward in Addiction Behavior with Anatomically Specific Single-Cell Gene Expression Methods
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Cited by 1 •
2022
The combination of laser capture microdissection and microfluidic RT-qPCR provides anatomic and biotechnical specificity in measuring the transcriptome in single neurons and glia. Applying creative methods with a system's biology approach to psychiatric disease may lead to breakthroughs in understanding and treatment such as the neuroinflammation antireward hypothesis in addiction.
FAQs
The promoter controlling Gal4 production determines which cells contain the Gal4 transcription factor. Only those cells can activate a UAS-linked responder, so promoter selection establishes the cellular pattern of the experiment. In neuroscience, this relationship allows investigators to focus gene expression, labeling, or activity manipulation on selected neuronal populations rather than on broad tissues.
The UAS sequence provides the regulatory site recognized by Gal4. When Gal4 is produced in a promoter-defined cell population, it binds the UAS and activates the responder gene linked to that sequence. This arrangement separates cell targeting from the experimental output, allowing different UAS responder lines to be paired with a compatible driver.
Specificity arises because responder activation requires both the appropriate promoter-driven Gal4 expression and a linked UAS target. The resulting expression pattern follows the selected cells rather than a broad genetic domain. This distinction is especially valuable when neural populations differ in their circuit connections, behavioral roles, developmental functions, or involvement in disease mechanisms.
An experiment begins by selecting a driver line whose promoter produces Gal4 in the neuronal population of interest, then pairing it with a UAS responder carrying the desired gene or labeling function. In the resulting combination, the responder is activated in the cells where Gal4 is present, connecting cell selection to the chosen experimental manipulation.
Gal4 drivers can direct neuronal labeling, targeted activity manipulation, or altered gene expression. These capabilities let researchers examine how defined neural populations contribute to circuit function and behavior, while also studying neural development and disease mechanisms. The same targeting logic supports different experimental goals when the UAS-linked responder is changed.
A single promoter-defined driver can be paired with different UAS responder genes, so the targeted neuronal population remains selected while the experimental readout or manipulation changes. Researchers can therefore use related driver combinations to label cells, alter their activity, or modify gene expression, supporting comparisons across neural circuits, behavior, development, and disease studies.