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Updated: May 15, 2026

Integration of Bioinformatics Approaches and Experimental Validations to Understand the Role of Notch Signaling in Ovarian Cancer
09:08

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Published on: January 12, 2020

Down-regulated expression of Notch signaling molecules in human endometrial cancer

Violeta Jonusiene1, Ausra Sasnauskiene, Nadezda Lachej

  • 1Department of Biochemistry and Biophysics, Faculty of Natural Sciences, Vilnius University, Vilnius, Lithuania. violeta.jonusiene@gf.vu.lt

Medical Oncology (Northwood, London, England)
|January 15, 2013
PubMed

Insights

The Notch signaling pathway, crucial for cell regulation, appears to act as a tumor suppressor in endometrial cancer. Its key molecules were found at lower levels in cancerous tissues, suggesting a protective role.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Signaling

Background:

  • The Notch signaling pathway is vital for cellular processes like proliferation and differentiation.
  • Aberrant Notch pathway activity is linked to various cancers, but its role in endometrial cancer is not fully understood.

Purpose of the Study:

  • To investigate the expression levels of Notch receptors (NOTCH1-4), ligands (JAG1-2, DLL1), and the target gene HES1 in endometrial cancer.
  • To determine the correlation between Notch pathway molecules and endometrial cancer progression and stage.

Main Methods:

  • Quantitative PCR was used to analyze mRNA expression of Notch pathway components.
  • Fifty paired samples of endometrial cancer and adjacent non-tumor tissues were analyzed.

Main Results:

  • mRNA levels of all studied Notch molecules were significantly lower in endometrial cancer tissues compared to adjacent non-tumor tissues.
  • Expression of NOTCH1, NOTCH4, and DLL1 was significantly lower in Stage IB adenocarcinoma than in Stage IA.
  • HES1 expression showed significant correlations with NOTCH1, NOTCH3, DLL1, NOTCH2, and JAG2.

Conclusions:

  • The findings suggest that the Notch signaling pathway may function as a tumor suppressor in human endometrial cancer.
  • Downregulation of Notch pathway components is associated with endometrial cancer development and progression.

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