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Recent progress in vertebrate limb morphogenesis.

P Maharajan1, G Quagliarotti, G Paino

  • 1CNR Istituto di Cibernetica, Napoli, Italy.

Rivista Di Biologia
|January 1, 1991
PubMed
Summary
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Chick wing development provides insights into vertebrate limb morphogenesis. Retinoic acid (RA) and retinols are key morphogens, with RA receptors potentially acting universally.

Area of Science:

  • Developmental biology
  • Molecular biology
  • Genetics

Background:

  • Vertebrate limb morphogenesis, particularly chick wing development, is a model for pattern formation.
  • Cellular processes like induction, division, and death are crucial.
  • Retinoic acid (RA) and retinols are identified as potential vertebrate morphogens.

Purpose of the Study:

  • To discuss cellular and molecular mechanisms in chick wing morphogenesis.
  • To highlight the role of retinoic acid (RA) and retinols as morphogens.
  • To explore the implications of RA receptor superfamily discovery and homeobox gene involvement.

Main Methods:

  • Review of studies on chick wing development.
  • Analysis of cellular inductive phenomena, cell division, and cell death.

Related Experiment Videos

  • Examination of retinoic acid (RA) signaling pathways and gene expression patterns.

    • Main Results:

    • Retinoic acid (RA) and retinols are established as key morphogens in vertebrate limb development.
    • RA receptors, part of the steroid hormone receptor superfamily, suggest a universal RA morphogen action.
    • Identification of 1d locus genes in mouse and homeobox proteins in chick wing development offers new molecular insights.

    Conclusions:

    • Chick wing development serves as a valuable model for understanding vertebrate morphogenesis.
    • RA signaling plays a fundamental role in pattern formation, with potential universal mechanisms.
    • Further research into gene regulation, including homeobox proteins, is essential for a comprehensive understanding of limb development.