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Related Experiment Video

Updated: Sep 11, 2025

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Generation of Maternal Mutants Using zpc:cas9 Knock-in Zebrafish.

Yizhuang Zhang1, Ziping Fu1, Boya Yang1

  • 1Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University.

Journal of Visualized Experiments : Jove
|August 11, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a new zebrafish line for stable, oocyte-specific Cas9 expression, enabling rapid generation of maternal mutants for essential developmental genes.

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Area of Science:

  • Developmental Biology
  • Genetics
  • Zebrafish Models

Background:

  • Maternal factors are crucial for oogenesis and early zebrafish development.
  • Generating maternal mutants is challenging due to zygotic lethality and previous Cas9 expression system limitations.

Purpose of the Study:

  • To create a stable, Tol2-free zebrafish line for robust oocyte-specific Cas9 expression.
  • To establish a pipeline for rapid maternal mutant generation in zebrafish.

Main Methods:

  • Developed a new zebrafish line with zpccas9 knock-in at the rbm24a locus.
  • Utilized oocyte-specific genome editing to bypass zygotic lethality.

Main Results:

  • The new line provides stable and robust oocyte-specific Cas9 expression across generations.
  • Successfully generated maternal mutants for genes with zygotically lethal phenotypes.

Conclusions:

  • This enhanced tool overcomes limitations of previous systems, facilitating efficient maternal mutant generation.
  • The developed pipeline accelerates research into maternal gene function in zebrafish development.