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Updated: Aug 23, 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

Notch in mammary gland development and breast cancer

Katerina Politi1, Nikki Feirt, Jan Kitajewski

  • 1Department of Genetics and Development, College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA.

Seminars in Cancer Biology
|August 4, 2004
PubMed

Insights

Notch signaling, particularly Notch4, drives mammary tumor development in mice by disrupting cell differentiation. This pathway is implicated as a causal factor in human breast cancer progression.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Notch signaling regulates crucial cellular processes like cell fate determination and oncogenesis.
  • The Notch1 and Notch4 genes are known targets for mouse mammary tumor virus-induced mutations, promoting mammary tumorigenesis.

Purpose of the Study:

  • To review studies on Notch-induced mammary tumorigenesis in mouse and in vitro models.
  • To provide evidence for Notch activation as a causal factor in human breast cancer development.

Main Methods:

  • Review of existing literature on Notch signaling in mammary tumorigenesis.
  • Analysis of mouse models with Notch gene mutations.
  • Examination of in vitro cell culture studies involving Notch activation.

Main Results:

  • Mouse mammary tumor virus mutations in Notch1 and Notch4 genes promote mammary epithelial tumorigenesis.
  • Constitutively active Notch4 inhibits mammary epithelial differentiation and induces tumor formation.
  • Evidence suggests Notch activation is a causal factor in human breast cancer.

Conclusions:

  • The Notch pathway plays a significant role in breast cancer development.
  • Further research into Notch signaling can enhance understanding of human breast cancer etiology.

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