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Related Experiment Videos

Antimorphic goosecoids

B Ferreiro1, M Artinger, K Cho

  • 1Division of Molecular Embryology, Deutsches Krebsforschungszentrum, Heidelberg, Germany.

Development (Cambridge, England)
|June 20, 1998
PubMed
Summary
This summary is machine-generated.

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Antimorphic goosecoid (gsc) variants disrupt vertebrate embryonic development by altering gene expression and mesoderm differentiation. This study highlights the critical role of gsc in axis formation and warns against the misuse of myc tags.

Area of Science:

  • Developmental Biology
  • Molecular Genetics
  • Embryology

Background:

  • Goosecoid (gsc) is a homeobox gene crucial for vertebrate axis formation.
  • The Spemann organizer is a key signaling center during embryonic development.

Purpose of the Study:

  • To characterize novel antimorphic goosecoid variants (MTgsc and VP16gsc).
  • To investigate the function of gsc in gastrulation and axial patterning.
  • To assess the impact of N-terminal myc tags on gsc function.

Main Methods:

  • Creation and mRNA injection of antimorphic gsc variants (MTgsc and VP16gsc).
  • Analysis of embryonic phenotypes, including gastrulation movements and axial defects.
  • Gene expression analysis to determine effects on dorsal and ventral markers.

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Main Results:

  • Both MTgsc and VP16gsc inhibited dorsal gastrulation and caused severe axial defects.
  • Antimorphs upregulated ventral gene expression and inhibited dorsal mesoderm differentiation.
  • N-terminal myc tags, like the VP16 activation domain, converted gsc into a transcriptional activator.
  • VP16gsc, at low doses, could uncouple head and trunk formation, suggesting distinct antimorph phenotypes.

Conclusions:

  • Goosecoid and related genes are essential for vertebrate axis formation and gastrulation.
  • Antimorphic gsc variants reveal critical regulatory roles in embryonic patterning.
  • The use of myc tags for labeling DNA-binding proteins requires careful consideration due to potential functional alterations.