A beginner's guide to understanding and implementing the genetic modification of zebrafish

Area of Science:

• Comparative genomics
• Vertebrate physiology
• Developmental biology

Background:

• Zebrafish offer conserved protein-coding genes, organ systems, and efficient breeding for physiological studies.
• Their amenability to genetic modification makes them advantageous over other vertebrate models.
• Existing genetic modification methods and lines are numerous but complex for new researchers.

Purpose of the Study:

• To provide a simplified guide for researchers new to genetic modification in zebrafish.
• To facilitate understanding, evaluation, and implementation of genetic approaches.
• To serve as a comprehensive resource for obtaining or generating genetically modified zebrafish.

Main Methods:

• Overview of zebrafish lines from chemical mutagenesis, retroviral insertional mutagenesis, and gene/enhancer trap screens.
• Descriptions of genetic modification methods: Tol2 transposon, TALENs, and CRISPR/Cas9.
• Summary of genetic modification strategy design features: promoters, fluorescent reporters, and conditional transgenesis.

Main Results:

• Presents an overview of established zebrafish genetic lines.
• Details common genetic engineering techniques.
• Summarizes key design elements for genetic modification strategies.

Conclusions:

• This review simplifies complex genetic modification information for novice researchers.
• It aims to facilitate the use of genetically modified zebrafish in research.
• Complements existing resources to lower the barrier to entry for genetic zebrafish research.