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Related Experiment Videos

Dynamic and tissue-specific expression of eIF4E during zebrafish embryogenesis.

S C Fahrenkrug1, M O Dahlquist, K J Clark

  • 1Department of Genetics and Cell Biology, University of Minnesota, St. Paul 55108-1095, USA.

Differentiation; Research in Biological Diversity
|February 1, 2000
PubMed
Summary

The zebrafish eIF4E gene produces two transcripts, suggesting distinct roles in embryonic development. This translational factor may act as a tissue-specific enhancer during key developmental stages.

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Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • Protein synthesis regulation is crucial for cellular processes and gene expression during embryogenesis.
  • The cap-binding protein eukaryotic initiation factor 4E (eIF4E) is a key translational factor with roles in cell-cycle regulation, mesoderm induction, and as a proto-oncogene.
  • The precise expression patterns and concentration of eIF4E during embryonic development are largely unknown.

Purpose of the Study:

  • To investigate the expression of the zebrafish eIF4E gene (zeIF4E) and its role in regulating embryonic development.
  • To determine the range of zeIF4E expression and its concentration over time and position within the developing zebrafish embryo.

Main Methods:

  • Cloning of the zebrafish eIF4E gene (zeIF4E).

Related Experiment Videos

  • Measurement of zeIF4E developmental expression.
  • Molecular analyses and in situ hybridization to determine transcript localization and potential protein forms.

    • Main Results:

    • The zeIF4E gene was cloned and its developmental expression was measured.
    • Two alternatively spliced transcripts of zeIF4E were identified, potentially encoding different forms of the initiation factor.
    • Dynamic and asymmetric expression of zeIF4E was observed during oogenesis, gastrulation, and erythropoiesis.

    Conclusions:

    • The zebrafish eIF4E gene produces alternatively spliced transcripts, indicating complex regulation.
    • eIF4E plays a potential role in regulating protein synthesis during critical vertebrate developmental processes.
    • The dynamic and tissue-specific expression suggests eIF4E may function as a tissue-specific translational enhancer in zebrafish embryogenesis.