Related Experiment Video

Updated: May 5, 2026

The Soft Agar Colony Formation Assay
08:01

The Soft Agar Colony Formation Assay

Published on: October 27, 2014

112.5K

β-Catenin transcriptional activity is minimal in canine osteosarcoma and its targeted inhibition results in minimal

Caroline M Piskun1, Timothy J Stein1,2,3

  • 1Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA.

Veterinary and Comparative Oncology
|November 22, 2013
PubMed

Insights

Targeting the Wnt signalling pathway in canine osteosarcoma (OS) showed minimal impact. Inhibition of this pathway is unlikely to be a viable therapeutic strategy for canine OS.

Area of Science:

  • Oncology
  • Molecular Biology
  • Veterinary Medicine

Background:

  • Canine osteosarcoma (OS) is an aggressive bone cancer with poor prognosis.
  • Understanding signalling pathways is crucial for developing new therapies.
  • The Wnt signalling pathway is implicated in osteoblast differentiation and various cancers, with β-catenin accumulation observed in canine OS.

Purpose of the Study:

  • To investigate the biological effects of inhibiting the canonical Wnt signalling pathway in canine OS.
  • To assess the therapeutic potential of targeting this pathway in canine osteosarcoma.

Main Methods:

  • Utilized β-catenin siRNA to inhibit Wnt signalling.
  • Employed a dominant-negative T-cell factor (TCF) construct for inhibition.
  • Compared cellular behaviour in treated canine OS cell lines versus parental cell lines.

Main Results:

  • No significant changes in canine OS cell line behaviour were observed after Wnt signalling inhibition.
  • Canonical Wnt signalling showed three-fold higher transcriptional activity in normal canine osteoblasts compared to canine OS cell lines.
  • These findings indicate minimal Wnt pathway activity in canine OS.

Conclusions:

  • Targeted inhibition of the canonical Wnt signalling pathway is not a relevant therapeutic strategy for canine osteosarcoma.
  • The Wnt pathway appears to be minimally active in canine OS, suggesting alternative pathways may drive the cancer's progression.
Keywords:
cell signallingcomparative oncologyin vitro modelsoncologytumour biology

More Related Videos

Reconstitution Of β-catenin Degradation In Xenopus Egg Extract09:41

Reconstitution Of β-catenin Degradation In Xenopus Egg Extract

Published on: June 17, 2014

10.9K
Intratibial Osteosarcoma Cell Injection to Generate Orthotopic Osteosarcoma and Lung Metastasis Mouse Models04:25

Intratibial Osteosarcoma Cell Injection to Generate Orthotopic Osteosarcoma and Lung Metastasis Mouse Models

Published on: October 28, 2021

10.1K

Related Concept Videos

Catenins01:23

Catenins

Catenins are characterized by multiple binding domains and dynamic structures that allow them to function as linker proteins in cell junction complexes. All catenins, except α-catenin, contain a characteristic protein sequence called the armadillo repeat and are therefore also called armadillo proteins.
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the...
2.2K
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...
8.6K
Inhibition of Cdk Activity02:34

Inhibition of Cdk Activity

The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
4.8K
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...
6.4K