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Temporal Ordering of Dynamic Expression Data from Detailed Spatial Expression Maps
Published on: February 9, 2017
[Somite patterning and segregation of different somite lineages]
1Laboratoire de Génétique et Physiologie du Développement, Institut de Biologie du Développement de Marseille, France. estelle@uoneuro.uoregon.edu
Journal De La Societe De Biologie
|October 30, 1999
Summary
Somites, transient vertebrate embryonic structures, form back skin, muscles, and bones. Their development relies on establishing polarity axes influenced by signaling molecules like Sonic Hedgehog, Wnt, and Bmp-4.
Area of Science:
- Developmental biology, focusing on vertebrate embryogenesis and cellular differentiation.
Context:
- Somites are transient mesodermal structures crucial for vertebrate development.
- In amniotes, somites differentiate into dermis, skeletal muscles, vertebrae, and ribs.
- Establishment of somitic polarity, specifically dorso-ventral and medio-lateral axes, is key for lineage segregation.
Purpose:
- To elucidate the mechanisms governing the establishment of somitic polarity axes.
- To understand the roles of intrinsic and extrinsic factors in medio-lateral axis formation.
- To investigate the influence of diffusible factors on somitic regionalization.
Summary:
- Somite development involves establishing two polarity axes: dorso-ventral and medio-lateral.
- Dorso-ventral axis establishment primarily relies on extrinsic cues.
- Medio-lateral axis establishment involves both intrinsic and extrinsic mechanisms, regulated by signaling gradients of factors like Sonic Hedgehog, Wnt, and Bmp-4.
Impact:
- Provides insights into the fundamental processes of vertebrate embryonic patterning.
- Highlights the complex interplay of signaling pathways in tissue differentiation.
- Contributes to understanding the origins of musculoskeletal and dermal structures.
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