Related Experiment Video
Updated: Jul 28, 2026
09:53
Whole-mount Immunohistochemical Analysis for Embryonic Limb Skin Vasculature: a Model System to Study Vascular Branching Morphogenesis in Embryo
Published on: May 20, 2011
Birth and death of cells in limb development: a mapping study
M A Fernández-Terán1, J R Hinchliffe, M A Ros
1Departamento de Anatomía y Biología Celular, Facultad de Medicina, Universidad de Cantabria, Santander, Spain.
Summary
Cell death and proliferation are crucial for embryonic limb development. This study maps these processes in chick and mouse limbs, providing comparative data for understanding limb diversity.
Area of Science:
- Developmental Biology
- Cell Biology
- Comparative Organogenesis
Background:
- Precise control of cell death and proliferation is essential for embryonic development.
- Vertebrate limb development exemplifies the critical balance between these cellular processes for morphogenesis.
- Understanding variations in cell death and proliferation patterns aids in explaining limb phenotype diversity.
Purpose of the Study:
- To comprehensively analyze and compare cell death and proliferation patterns during chick and mouse limb development.
- To provide organized datasets for comparing these fundamental processes in two major model organisms.
- To elucidate the spatial and temporal dynamics of cell death and proliferation in limb morphogenesis.
Main Methods:
- Terminal deoxynucleotidyl transferase-mediated deoxyuridinetriphosphate nick-end labeling (TUNEL) assay for cell death.
- Anti-phosphorylated histone H3 immunohistochemistry for cell proliferation (mitotic cells).
- Analysis of consecutive limb sections from chick and mouse embryos across developmental stages.
Main Results:
- Confirmed and expanded previous findings on cell death and proliferation patterns.
- Identified both common and species-specific areas of cell death in developing limbs.
- Observed uniform distribution of mitotic cells in early limb buds, scarce in cell death areas, and abundant in digital tips at later stages.
Conclusions:
- Detailed mapping of cell death and proliferation provides a foundation for comparative limb development studies.
- Comparative analysis highlights conserved and divergent mechanisms in chick and mouse limb development.
- This data facilitates understanding how disruptions in cell death and proliferation contribute to limb malformations.
More Related Videos
Related Concept Videos
01:56Gastrulation
Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata will form...
01:09Changes in the Appendicular Skeleton with Age
The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
01:07Development of the Limb Synovial Joints
Joints form during embryonic development in conjunction with the formation and growth of the associated bones. The embryonic tissue that gives rise to all bones, cartilage, and connective tissues of the body is called mesenchyme.
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...