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Updated: May 10, 2026
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Chicken Recombinant Limbs Assay to Understand Morphogenesis, Patterning, and Early Steps in Cell Differentiation
Published on: January 12, 2022
Planar cell polarity in vertebrate limb morphogenesis.
1National Human Genome Research Institute, Bethesda, MD 20892, United States.
Current Opinion in Genetics & Development
|June 11, 2013
Summary
Vertebrate limb development relies on signaling centers coordinating growth and patterning. The Wnt/planar cell polarity pathway is crucial for directional morphogenesis, interpreting morphogen gradients for limb bud shaping.
Area of Science:
- Developmental biology
- Molecular biology
- Genetics
Background:
- Vertebrate limb development is a complex process involving coordinated growth, patterning, and morphogenesis.
- Signaling centers within the limb bud orchestrate development along three axes.
- Morphogen gradients and polarized cell behaviors are key to shaping the limb bud.
Purpose of the Study:
- To investigate the role of the Wnt/planar cell polarity (PCP) pathway in directional limb morphogenesis.
- To understand how cells interpret morphogen gradients during limb development.
Main Methods:
- Live imaging techniques to observe cellular behaviors in real-time.
- Mathematical modeling to analyze the dynamics of morphogen gradients and cell polarization.
- Analysis of Wnt signaling and PCP pathway components.
Main Results:
- Polarized cell behaviors, regulated by morphogen gradients, are essential for limb bud formation.
- The Wnt/PCP pathway is critical for directional morphogenesis in the developing limb.
- Cells interpret directional information from morphogen gradients by modulating PCP component activity in a Wnt dose-dependent manner.
Conclusions:
- The Wnt/PCP pathway acts as a key mediator in translating morphogen gradient information into directional cellular behaviors during limb development.
- Understanding this pathway provides insights into fundamental mechanisms of organogenesis and pattern formation.
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