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Concomitant Notch activation and p53 deletion trigger epithelial-to-mesenchymal transition and metastasis in mouse gut.

Maia Chanrion | Inna Kuperstein | Cédric Barrière | Fatima El Marjou | David Cohen | Danijela Vignjevic | Lev Stimmer | Perrine Paul-Gilloteaux | Ivan Bièche | Silvina Dos Reis Tavares | Giuseppe-Fulvio Boccia | Wulfran Cacheux | Didier Meseure | Silvia Fre | Loredana Martignetti | Patricia Legoix-Né | Elodie Girard | Luc Fetler | Emmanuel Barillot | Daniel Louvard | Andreï Zinovyev | Sylvie Robine
Nature communications | 2014

Epithelial-to-mesenchymal transition-like (EMT-like) is a critical process allowing initiation of metastases during tumour progression. Here, to investigate its role in intestinal cancer, we combine computational network-based and experimental approaches to create a mouse model with high metastatic potential. Construction and analysis of this network map depicting molecular mechanisms of EMT regulation based on the literature suggests that Notch activation and p53 deletion have a synergistic effect in activating EMT-like processes. To confirm this prediction, we generate transgenic mice by conditionally activating the Notch1 receptor and deleting p53 in the digestive epithelium (NICD/p53(-/-)). These mice develop metastatic tumours with high penetrance. Using GFP lineage tracing, we identify single malignant cells with mesenchymal features in primary and metastatic tumours in vivo. The development of such a model that recapitulates the cellular features observed in invasive human colorectal tumours is appealing for innovative drug discovery.

Pubmed ID: 25295490

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Dako (tool)

RRID:SCR_013530

An Antibody supplier; Dako was purchased by Agilent in 2012 and several years later the websites began to reflect the Dako products as part of the Agilent catalog.

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C57BL/6J (tool)

RRID:IMSR_JAX:000664

Mus musculus with name C57BL/6J from IMSR.

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