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Updated: Jan 3, 2026

Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
A "NOTCH" Deeper into the Epithelial-To-Mesenchymal Transition (EMT) Program in Breast Cancer
Rohan Kar1, Niraj Kumar Jha2, Saurabh Kumar Jha2
1Indian Institute of Management Ahmedabad (IIMA), Gujarat 380015, India.
Abstract:
Notch signaling is a primitive signaling pathway having various roles in the normal origin and development of each multicellular organisms. Therefore, any aberration in the pathway will inevitably lead to deadly outcomes such as cancer. It has now been more than two decades since Notch was acknowledged as an oncogene in mouse mammary tumor virus-infected mice. Since that discovery, activated Notch signaling and consequent up-regulation of tumor-promoting Notch target genes have been observed in human breast cancer. Moreover, consistent over-expression of Notch ligands and receptors has been shown to correlate with poor prognosis in human breast cancer. Notch regulates a number of key processes during breast carcinogenesis, of which, one key phenomenon is epithelial-mesenchymal transition (EMT). EMT is a key process for large-scale cell movement during morphogenesis at the time of embryonic development. Cancer cells aided by transcription factors usurp this developmental program to execute the multi-step process of tumorigenesis and metastasis. In this review, we recapitulate recent progress in breast cancer research that has provided new perceptions into the molecular mechanisms behind Notch-mediated EMT regulation during breast tumorigenesis.
Insights
Notch signaling, a primitive pathway, is implicated in cancer development. This review explores how Notch signaling drives breast cancer progression by regulating epithelial-mesenchymal transition (EMT).
Area of Science:
- Molecular Biology
- Developmental Biology
- Oncology
Background:
- Notch signaling is crucial for multicellular organism development.
- Aberrations in Notch signaling are linked to cancer, with Notch recognized as an oncogene for over two decades.
- Activated Notch signaling and its target genes are observed in human breast cancer, correlating with poor prognosis.
Purpose of the Study:
- To review recent advancements in understanding Notch-mediated regulation of epithelial-mesenchymal transition (EMT) in breast tumorigenesis.
- To elucidate the molecular mechanisms by which Notch signaling influences breast cancer development.
Main Methods:
- Literature review of recent progress in breast cancer research.
- Analysis of molecular mechanisms linking Notch signaling to EMT.
- Exploration of Notch's role in breast carcinogenesis and metastasis.
Main Results:
- Notch signaling plays a key role in breast carcinogenesis.
- Notch signaling regulates epithelial-mesenchymal transition (EMT), a process hijacked by cancer cells for metastasis.
- Over-expression of Notch ligands and receptors is associated with poor breast cancer prognosis.
Conclusions:
- Notch signaling is a significant factor in breast cancer development and progression.
- Understanding Notch-mediated EMT is crucial for developing new therapeutic strategies against breast cancer.
- Further research into Notch's molecular mechanisms can provide new insights into tumorigenesis.
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