CRF2 signaling is a novel regulator of cellular adhesion and migration in colorectal cancer cells.Report as inadecuate




CRF2 signaling is a novel regulator of cellular adhesion and migration in colorectal cancer cells. - Download this document for free, or read online. Document in PDF available to download.

* Corresponding author 1 INSERM U836, équipe 8, Stress et interactions neurodigestives GIN - Grenoble Institut des Neurosciences 2 GIN - Grenoble Institut des Neurosciences 3 Laboratoire Central d-Anatomie et de Cytologie Pathologiques 4 INSERM U836, équipe 8, Stress et interactions neurodigestives Département d-hépato-gastroentérologie, GIN - Grenoble Institut des Neurosciences

Abstract : Stress has been proposed to be a tumor promoting factor through the secretion of specific neuromediators, such as Urocortin2 and 3 Ucn2-3, however its role in colorectal cancer CRC remains elusive. We observed that Ucn2-3 and their receptor the Corticotropin Releasing Factor receptor 2 CRF2 were up-regulated in high grade and poorly differentiated CRC. This suggests a role for CRF2 in the loss of cellular organization and tumor progression. Using HT-29 and SW620 cells, two CRC cell lines differing in their abilities to perform cell-cell contacts, we found that CRF2 signals through Src-ERK pathway to induce the alteration of cell-cell junctions and the shuttle of p120ctn and Kaiso in the nucleus. In HT-29 cells, this signaling pathway also leads to the remodeling of cell adhesion by i the phosphorylation of Focal Adhesion Kinase and ii a modification of actin cytoskeleton and focal adhesion complexes. These events stimulate cell migration and invasion. In conclusion, our findings indicate that CRF2 signaling controls cellular organization and may promote metastatic potential of human CRC cells through an epithelial-mesenchymal transition like process. This contributes to the comprehension of the tumor-promoting effects of stress molecules and designates Ucn2-3-CRF2 tandem as a target to prevent CRC progression and aggressiveness.

Keywords : Cell adhesion colorectal cancer Corticotropin Rel easing Factor stress tumor progression





Author: Benjamin Ducarouge - Marjolaine Pelissier-Rota - Michèle Lainé - Nadine Cristina - Yvan Vachez - Jean-Yves Scoazec - Bruno Bona

Source: https://hal.archives-ouvertes.fr/



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