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Related Concept Videos

Canonical Wnt Signaling Pathway02:54

Canonical Wnt Signaling Pathway

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The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which...
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Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
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Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
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The Functions of the Skeletal System01:22

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The most apparent functions of the skeletal system are support, protection, and movement. However, bone tissue also performs several other critical metabolic functions. For one, the bone matrix acts as a reservoir for a number of minerals important to the functioning of the body, especially calcium and phosphorus. These minerals, present in the bone tissue, can be released back into the bloodstream when required. Calcium ions, for example, are essential for muscle contractions and controlling...
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Introduction to the Skeletal System01:20

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The skeletal system is the central framework of the body, consisting of different connective tissues: bones, cartilage, tendons, and ligaments.
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Studying Wnt Signaling During Patterning of Conducting Airways
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Wnt-signaling in skeletal development.

Stefan Teufel1, Christine Hartmann1

  • 1Institute of Musculoskeletal Medicine, Department Bone and Skeletal Research, Medical Faculty of the Westphalian Wilhelms University of Münster, Münster, Germany.

Current Topics in Developmental Biology
|March 24, 2019
PubMed
Summary
This summary is machine-generated.

The Wnt signaling pathway is crucial for skeletal development, guiding mesenchymal cells to form bone and cartilage. This review focuses on Wnt

Keywords:
Bone homeostasisChondrocyteDiseaseJointNon-canonicalOsteoblastOsteoclastWNTβ-Catenin

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Area of Science:

  • Developmental Biology
  • Cell Biology
  • Biochemistry

Background:

  • Vertebrate skeleton development involves a transition from cartilage to mineralized bone.
  • Skeletal cells like chondrocytes and osteoblasts originate from mesoderm, with some facial bones derived from neural crest cells.
  • Mesenchymal cell differentiation into chondrogenic and osteogenic lineages is regulated by signaling pathways.

Purpose of the Study:

  • To review the roles of Wnt signaling in skeletogenesis.
  • To focus on the involvement of Wnt signaling in endochondral bone formation.

Main Methods:

  • Review of genetic loss- and gain-of-function experiments.
  • Analysis of Wnt-signaling pathway genes.
  • Discussion of Wnt's multiple roles in skeletogenesis.

Main Results:

  • Wnt signaling pathways play a significant role in controlling mesenchymal cell differentiation.
  • Wnt signaling is essential for both chondrogenic and osteogenic maturation.
  • Genetic studies reveal diverse functions of Wnt pathway genes in skeletal development.

Conclusions:

  • Wnt signaling is a key regulator of skeletal development, particularly endochondral ossification.
  • Understanding Wnt pathways provides insights into skeletal disorders.
  • Further research into Wnt signaling can elucidate mechanisms of bone formation.