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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 adherens...
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...

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An Immunofluorescent Method for Characterization of Barrett&#8217;s Esophagus Cells
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Sulindac sulfone induces a decrease of beta-catenin in HNSCC.

Alexander Sauter1, Hannah Soulsby, Karl Hormann

  • 1Department of Otolaryngology, Head and Neck Surgery, Universitaets-HNO-Klinik, Theodor-Kutzer-Ufer, D-68135 Mannheim, Germany. alexander.sauter@gmail.com

Anticancer Research
|March 25, 2010
PubMed
Summary

Sulindac sulfone significantly reduced secreted beta-catenin levels in head and neck squamous cell carcinoma (HNSCC) cells, inhibiting proliferation. This suggests sulindac sulfone as a potential chemopreventive agent for HNSCC by targeting beta-catenin accumulation.

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Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Head and neck squamous cell carcinoma (HNSCC) is an aggressive malignancy.
  • Beta-catenin plays a crucial role in cell-cell adhesion and tumor growth.
  • Sulindac sulfone has demonstrated apoptosis-inducing effects in various tumors.

Purpose of the Study:

  • To investigate the effect of sulindac sulfone on beta-catenin concentration in an HNSCC cell line.
  • To evaluate sulindac sulfone's potential as a chemopreventive agent for HNSCC.

Main Methods:

  • UMSCC 11A cell line was treated with varying concentrations of sulindac sulfone (100-800 microMol) for 48 hours.
  • Immunohistochemical and Western blot analyses were employed to assess beta-catenin levels.

Main Results:

  • A dose-dependent reduction in secreted beta-catenin was observed, with >70% decrease at higher concentrations.
  • Sulindac sulfone treatment appeared to inhibit cell proliferation.
  • No significant reduction in total protein was noted compared to controls.

Conclusions:

  • Sulindac sulfone effectively reduced secreted beta-catenin levels in HNSCC cells.
  • Targeting beta-catenin accumulation is a promising strategy for HNSCC chemoprevention.
  • Sulindac sulfone warrants further investigation as a therapeutic agent for HNSCC.