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Microbead Implantation in the Zebrafish Embryo
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Core fucosylation is required for midline patterning during zebrafish development.

Anandita Seth1, Quentin J Machingo, Andreas Fritz

  • 1Department of Cell Biology, Emory University, Atlanta, Georgia, USA.

Developmental Dynamics : an Official Publication of the American Association of Anatomists
|November 12, 2010
PubMed
Summary
This summary is machine-generated.

Knockdown of FucT8, a fucosyltransferase, causes midline developmental defects in zebrafish by impacting Apolipoprotein B (ApoB) and Sonic hedgehog signaling pathways.

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Area of Science:

  • Developmental Biology
  • Glycobiology
  • Molecular Biology

Background:

  • Complex carbohydrates play crucial roles in embryonic development, but their specific functions are not fully understood.
  • FucT8 is an enzyme responsible for specific glycosylation patterns in N-linked oligosaccharides.

Purpose of the Study:

  • To investigate the function of FucT8 during embryonic development.
  • To identify FucT8 substrates and their roles in developmental processes.

Main Methods:

  • Knockdown of FucT8 and Apolipoprotein B (ApoB) in zebrafish embryos.
  • Observation and analysis of embryonic midline patterning defects.
  • Investigating the role of ApoB in Sonic hedgehog signaling.

Main Results:

  • FucT8 knockdown resulted in significant midline patterning defects, including cyclopia and abnormal brain development.
  • Apolipoprotein B (ApoB) was identified as a key substrate of FucT8.
  • ApoB knockdown phenocopied FucT8 knockdown defects, suggesting its involvement in midline patterning.
  • ApoB appears to facilitate Sonic hedgehog signaling during zebrafish development.

Conclusions:

  • FucT8 is essential for proper midline patterning in zebrafish development.
  • ApoB plays a critical role in embryonic development, potentially by mediating Sonic hedgehog signaling.
  • The FucT8-ApoB-Sonic hedgehog axis represents a novel pathway in vertebrate embryonic development.