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Related Experiment Videos

Baculovirus-mediated gene expression in zebrafish.

Mahendra Wagle1, Suresh Jesuthasan

  • 1Fish Developmental Genetics Laboratory, IMA, 1 Research Link, Singapore 117604.

Marine Biotechnology (New York, N.Y.)
|August 20, 2003
PubMed
Summary
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Baculovirus effectively expresses genes in zebrafish embryos, enabling controlled, localized gene misexpression. This technique, demonstrated by manipulating ephrinB2a, aids developmental studies by revealing gene function through altered somite formation.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • Gene misexpression is crucial for understanding gene function during embryonic development.
  • Controlling the timing and location of gene expression is essential for precise experimental manipulation.
  • Zebrafish embryos offer a powerful model system for studying vertebrate development due to their optical transparency and rapid development.

Purpose of the Study:

  • To evaluate the efficacy of baculovirus as a tool for gene misexpression in zebrafish embryos.
  • To demonstrate the ability to control the spatial and temporal expression of genes using baculovirus.
  • To investigate the role of specific genes in zebrafish development through ectopic expression.

Main Methods:

  • Zebrafish embryos were injected with baculovirus carrying specific genes (LacZ, GFP, ephrinB2a).

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  • The baculovirus utilized different promoters to control gene expression.
  • Ectopic expression of ephrinB2a was induced in the presomitic mesoderm to observe its effects.

    • Main Results:

    • Baculovirus successfully infected zebrafish embryos and drove gene expression.
    • Independent expression of LacZ and GFP was achieved using distinct promoters.
    • Misexpression of ephrinB2a resulted in abnormal somite boundary formation.
    • Expression efficiency varied depending on the promoter used.

    Conclusions:

    • Baculovirus serves as an effective tool for targeted gene misexpression in zebrafish.
    • This method allows for precise control over the location and timing of gene expression, particularly late in development.
    • Baculovirus-mediated gene misexpression can reveal gene functions by observing phenotypic alterations, such as abnormal somite development.