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Related Experiment Videos

Hindbrain patterning involves graded responses to retinoic acid signalling.

V Dupé1, A Lumsden

  • 1MRC Centre for Developmental Neurobiology, King's College London, Guy's Campus, London SE1 1UL, UK.

Development (Cambridge, England)
|August 9, 2001
PubMed
Summary
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Retinoic acid signaling is crucial for hindbrain patterning in chick embryos. Blocking this pathway transforms the hindbrain, revealing a retinoid gradient

Area of Science:

  • Developmental Biology
  • Neuroscience
  • Genetics

Background:

  • Retinoic acid signaling is implicated in hindbrain development.
  • Its precise role in anteroposterior neural tube patterning remains unclear.

Purpose of the Study:

  • To elucidate the exact function of retinoic acid signaling in hindbrain patterning.
  • To clarify its role in establishing the anteroposterior axis of the neural tube.

Main Methods:

  • Culturing staged chick embryos with a retinoic acid receptor antagonist.
  • Analyzing hindbrain development and rhombomere specification.

Main Results:

  • Retinoic acid is essential for posterior hindbrain structure expansion.
  • Blocking retinoic acid signaling caused the hindbrain to adopt rhombomere 4 identity.

Related Experiment Videos

  • Rhombomere boundary specification shows a stage-dependent and anterior-to-posterior gradient sensitivity to retinoic acid.

    • Conclusions:

    • Retinoic acid acts as the key signal for posterior hindbrain expansion.
    • A complex retinoid gradient patterns the posterior hindbrain.
    • This study reinterprets hindbrain phenotypes in retinoic acid deficiency models.