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Updated: May 10, 2026

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
Published on: October 27, 2020
Signaling pathway switch in breast cancer
Arnaud Guille1, Max Chaffanet, Daniel Birnbaum
1Centre de Recherche en Cancérologie de Marseille, Oncologie Moléculaire, "Equipe labellisée Ligue Contre le Cancer", UMR1068 Inserm, CNRS UMR7258, Institut Paoli-Calmettes, Aix-Marseille Université, 27 bd, Leï Roure, BP 30059, Marseille 13273, France. daniel.birnbaum@inserm.fr.
Next-generation sequencing reveals key breast cancer pathways. The PI3 kinase/AKT pathway is activated while the JUN/MAPK pathway is repressed, impacting tumor-initiating cells.
Area of Science:
- Oncology
- Molecular Biology
- Genomics
Background:
- Next-generation sequencing (NGS) has advanced our understanding of breast cancer genomics.
- Identifying novel therapeutic targets is crucial for effective breast cancer treatment.
Purpose of the Study:
- To elucidate the major signaling pathway alterations in breast cancer.
- To understand the impact of these alterations on tumor-initiating cells.
Main Methods:
- Genomic analysis using next-generation sequencing.
- Analysis of key signaling pathways, including PI3K/AKT and JUN/MAPK.
- Investigation of cell cycle regulation and tumor-initiating cell dynamics.
Main Results:
- Hundreds of new therapeutic targets have been identified in breast cancer.
- The PI3 kinase/AKT pathway is frequently activated in breast cancers.
- The JUN/MAPK pathway is commonly repressed in breast cancers.
Conclusions:
- Metabolic reprogramming via altered signaling pathways affects tumor-initiating cell behavior.
- Targeting these pathways could offer new therapeutic strategies for breast cancer.
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