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Related Concept Videos

Canonical Wnt Signaling Pathway02:54

Canonical Wnt Signaling Pathway

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 results in tumor...
Canonical Wnt Signaling Pathway02:54

Canonical Wnt Signaling Pathway

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 results in tumor...
Non-Canonical Wnt Signaling Pathways01:41

Non-Canonical Wnt Signaling Pathways

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...
Non-Canonical Wnt Signaling Pathways01:41

Non-Canonical Wnt Signaling Pathways

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...
Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...

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Related Experiment Video

Updated: May 9, 2026

Modeling Paracrine Noncanonical Wnt Signaling In Vitro
11:14

Modeling Paracrine Noncanonical Wnt Signaling In Vitro

Published on: December 10, 2021

Wnt signaling in bone.

Takuo Kubota1, Toshimi Michigami, Keiichi Ozono

  • 1Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan ; Department of Bone and Mineral Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan.

Clinical Pediatric Endocrinology : Case Reports and Clinical Investigations : Official Journal of the Japanese Society for Pediatric Endocrinology
|August 9, 2013
PubMed
Summary

Wnt signaling regulates bone health and homeostasis. Inhibiting sclerostin, a Wnt pathway blocker, shows promise for bone formation, but further research is needed for safety.

Keywords:
LRP5LRP6Wnt signalingbone metabolismsclerostin

Related Experiment Videos

Last Updated: May 9, 2026

Modeling Paracrine Noncanonical Wnt Signaling In Vitro
11:14

Modeling Paracrine Noncanonical Wnt Signaling In Vitro

Published on: December 10, 2021

Area of Science:

  • Bone Biology
  • Developmental Biology
  • Endocrinology

Background:

  • Wnt signaling is crucial for embryonic development and maintaining adult tissue homeostasis.
  • Mutations in the LRP5 gene highlight Wnt signaling's role in human bone diseases.
  • Canonical Wnt signaling directs mesenchymal stem cells toward osteoblast differentiation.

Purpose of the Study:

  • To explore the multifaceted roles of Wnt signaling in bone metabolism.
  • To investigate potential therapeutic targets within the Wnt pathway for bone disorders.
  • To understand the mechanisms underlying Wnt signaling's influence on bone formation and resorption.

Main Methods:

  • Analysis of genetic mutations (LRP5) linked to bone diseases.
  • Investigation of the canonical Wnt/β-catenin pathway and its co-receptors (Lrp5, Lrp6).
  • Examination of endogenous Wnt inhibitors like sclerostin and their regulation by parathyroid hormone (PTH).

Main Results:

  • Canonical Wnt signaling promotes osteoblast differentiation and regulates bone resorption via the OPG/RANKL ratio.
  • Sclerostin, primarily in osteocytes, inhibits bone formation; its inhibition is a promising therapeutic strategy.
  • Lrp5 influences bone formation indirectly by modulating duodenal serotonin synthesis.

Conclusions:

  • Targeting Wnt signaling components offers potential for treating bone diseases.
  • Inhibiting sclerostin presents a promising therapeutic avenue for enhancing bone formation.
  • Further research is essential to fully elucidate Wnt signaling's impact on bone metabolism and ensure intervention safety.