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DAPT enhances the apoptosis of human tongue carcinoma cells

Brian E Grottkau1, Xi-Rui Chen, Claudia C Friedrich

  • 1Department of Orthopaedic Surgery, Mass General Hospital for Children, Pediatric Orthopaedic Laboratory for Tissue Engineering, Harvard Medical School, Boston, USA.

International Journal of Oral Science
|August 7, 2010
PubMed
Abstract

Insights

The gamma-secretase inhibitor DAPT significantly inhibited human tongue carcinoma cell growth by inducing cell cycle arrest and apoptosis. DAPT

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Tongue carcinoma is a significant global health concern.
  • Understanding molecular mechanisms of tumor growth is crucial for developing targeted therapies.

Purpose of the Study:

  • To evaluate the anti-cancer effects of DAPT (gamma-secretase inhibitor) on human tongue carcinoma cells.
  • To elucidate the molecular pathways involved in DAPT's anti-tumor activity.

Main Methods:

  • Human tongue carcinoma Tca8113 cells were treated with DAPT.
  • Cell viability was assessed using the Indigotic Reduction method.
  • Cell cycle, apoptosis, Hes-1 mRNA, and Caspase-3 levels were analyzed via flow cytometry and RT-PCR.

Main Results:

  • DAPT demonstrated significant inhibition of Tca8113 cell proliferation.
  • DAPT induced G0-G1 cell cycle arrest and apoptosis in cancer cells.
  • DAPT dose-dependently reduced Hes-1 mRNA levels and increased Caspase-3 activation.

Conclusions:

  • DAPT exhibits therapeutic potential for treating human tongue carcinoma.
  • DAPT's anti-tumor effects are partly mediated through the Notch-1 and Caspase-3 signaling pathways.

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