Rx3:gfp Zebrafish

Rx3:gfp zebrafish are transgenic research animals in which green fluorescent protein (GFP) reports activity of the rx3 gene, a developmental regulator expressed in the early eye field and hypothalamus. In these fish, rx3 regulatory sequences drive GFP production in rx3-expressing progenitor cells, allowing their location, movements, and changing identity to be observed in living embryos by fluorescence microscopy. The line provides a noninvasive model for studying neural patterning, optic vesicle formation, retinal differentiation, and hypothalamic development, while enabling cell lineage analysis and genetic or chemical screens that reveal mechanisms governing vertebrate organ formation.

Rx3:gfp Zebrafish - Related Videos

Research

JoVE Journal - Biology
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In vivo Electroporation of Morpholinos into the Adult Zebrafish Retina

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Cited by 42 •

2011

A method to conditionally knockdown a target protein’s expression in the adult zebrafish retina is described, which involves intravitreally injecting antisense morpholinos and electroporating them into the retina. The resulting protein is knocked down for several days, which allows testing the protein’s role in the regenerating or intact retina.

Research

JoVE Journal - Biology

Nephrotoxin Microinjection in Zebrafish to Model Acute Kidney Injury

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Cited by 8 •

2016

Renal injuries incurred from nephrotoxins, which include drugs ranging from antibiotics to chemotherapeutics, can result in complex disorders whose pathogenesis remains incompletely understood. This protocol demonstrates how zebrafish can be used for disease modeling of these conditions, which can be applied to the identification of renoprotective measures.

Education

JoVE Science Education - Basic Biology

Zebrafish Reproduction and Development

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2023

The zebrafish (Danio rerio) has become a popular model for studying genetics and developmental biology. The transparency of these animals at early developmental stages permits the direct visualization of tissue morphogenesis at the cellular level. Furthermore, zebrafish are amenable to genetic manipulation, allowing researchers to determine the effect of gene expression on the development of a vertebrate with a high degree of genetic similarity to humans. This video provides a brief overview of...

Tol2 Transposon-Mediated Zebrafish Transgenesis: A Procedure to Generate Transgenic Zebrafish Following the Coinjection of Tol2 System Into Fertilized Zebrafish Embryos

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2025

In this video, we demonstrate a procedure to generate a stable zebrafish transgenic line constitutively expressing a fluorescent voltage indicator protein following the co-injection of the Tol2 transposon system comprising the transposase mRNA and Tol2 transposon construct encoding the fluorescent voltage indicator.

Zebrafish Maintenance and Husbandry

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2023

The zebrafish (Danio rerio) is a powerful vertebrate model system for studying development, modeling disease, and screening for novel therapeutics. Due to their small size, large numbers of zebrafish can be housed in the laboratory at low cost. Although zebrafish are relatively easy to maintain, special consideration must be given to both diet and water quality to in order to optimize fish health and reproductive success. This video will provide an overview of zebrafish husbandry and...

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