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Related Experiment Videos

Mechanisms of limb patterning

R L Johnson1, R D Riddle, C J Tabin

  • 1Department of Genetics, Harvard Medical School, Boston, Massachusetts 02155.

Current Opinion in Genetics & Development
|August 1, 1994
PubMed
Summary
This summary is machine-generated.

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Proper limb development in vertebrates relies on signaling molecules like Sonic hedgehog and FGFs. These factors orchestrate tissue arrangement and patterning, with Hox genes potentially mediating their effects.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • Vertebrate limb development is a complex process requiring coordinated signaling for tissue organization.
  • Key signaling molecules involved in limb bud patterning have been recently identified.

Purpose of the Study:

  • To elucidate the roles of specific signaling molecules in vertebrate limb development.
  • To understand how these signals contribute to anterior/posterior and proximal/distal patterning.

Main Methods:

  • Identification and characterization of signaling molecules involved in limb bud patterning.
  • Analysis of the functions of Sonic hedgehog and Fibroblast Growth Factors (FGFs).

Main Results:

  • Sonic hedgehog (Shh) is implicated in regulating anterior/posterior pattern formation.

Related Experiment Videos

  • FGF-2 and FGF-4 are crucial for limb bud outgrowth and proximal/distal patterning.
  • Clustered Hox genes are candidate effectors of Shh and FGF signaling pathways.

    • Conclusions:

    • Sonic hedgehog and FGFs are essential signaling molecules for vertebrate limb development.
    • These signals coordinate to establish limb structure and tissue arrangement.
    • Hox genes likely play a role in mediating the downstream effects of these signaling pathways.