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Updated: Dec 18, 2025

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

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

Published on: January 12, 2020

7.1K

Notch1 Affects Chemo-resistance Through Regulating Epithelial-Mesenchymal Transition (EMT) in Epithelial Ovarian

Xue-Qian Qian1, Sang-Sang Tang1, Yuan-Ming Shen1

  • 1Women's Reproductive Health Key Laboratory of Zhejiang Province; Department of Gynecologic Oncology, Women's Hospital, School of Medicine, Zhejiang University, and Hangzhou, China.

International Journal of Medical Sciences
|June 18, 2020
PubMed

Insights

Notch1 signaling promotes platinum resistance in epithelial ovarian cancer (EOC) by driving Epithelial-Mesenchymal Transition (EMT). Targeting Notch1 may offer a new therapeutic strategy for overcoming chemo-resistance in EOC patients.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Epithelial ovarian cancer (EOC) is a leading cause of gynecological cancer mortality.
  • Chemo-resistance significantly contributes to treatment failure in EOC.
  • Previous research linked Notch1 pathway to immune escape and tumor progression in EOC.

Purpose of the Study:

  • To investigate the role of Notch1 in platinum-resistance mechanisms in epithelial ovarian cancer.
  • To elucidate how Notch1 signaling influences chemo-resistance in EOC cells.
  • To explore Notch1 as a potential therapeutic target for overcoming EOC chemo-resistance.

Main Methods:

  • Western blot analysis to assess protein expression (Notch1, Snail, MMP-2, N-cadherin, Vimentin, E-cadherin).
  • Lentiviral gene engineering to establish stable high/low Notch1 expression in ovarian cancer cells.
  • Cell migration/invasion assays (scratch and Transwell tests) and flow cytometry (apoptosis, cell cycle analysis).

Main Results:

  • Elevated Notch1, Snail, MMP-2, N-cadherin, and Vimentin expression, with decreased E-cadherin, observed in ovarian cancer.
  • Notch1 overexpression promoted Snail, vimentin, N-cadherin, and MMP2, while inhibiting E-cadherin, enhancing cell migration and invasion.
  • Notch1 influenced cell apoptosis and cell cycle progression (S and G2 phases) via Epithelial-Mesenchymal Transition (EMT), impacting drug resistance.

Conclusions:

  • Notch1 plays a critical role in mediating chemo-resistance in epithelial ovarian cancer by regulating EMT.
  • Targeting the Notch1 pathway presents a promising new therapeutic strategy for EOC treatment.
  • Understanding Notch1's role in EMT is key to developing effective therapies against platinum-resistant EOC.
Keywords:
EMTEOC cellsNotch1ovarian cancer

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