Article (Scientific journals)
The endosomal protein CEMIP links Wnt signaling to MEK1-ERK1/2 activation in Selumetinib-resistant intestinal organoids
Duong, Hong Quan; Nemazanyy, Ivan; Rambow, Florian et al.
2018In Cancer Research, p. 10.1158/0008-5472.CAN-17-3149
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Keywords :
Intestinal cancer; Acquired resistance; ERK1/2 reactivation
Abstract :
[en] MAPK signaling pathways are constitutively active in colon cancer and also promote acquired resistance to MEK1 inhibition. Here we demonstrate that BRAFV600E-mutated colorectal cancers acquire resistance to MEK1 inhibition by inducing expression of the scaffold protein CEMIP through a beta-catenin- and FRA-1-dependent pathway. CEMIP was found in endosomes and bound MEK1 to sustain ERK1/2 activation in MEK1 inhibitor-resistant BRAFV600E-mutated colorectal cancers. The CEMIP-dependent pathway maintained c-Myc protein levels through ERK1/2 and provided metabolic advantage in resistant cells, potentially by sustaining amino acids synthesis. CEMIP silencing circumvented resistance to MEK1 inhibition, partly, through a decrease of both ERK1/2 signaling and c-Myc. Together, our data identify a cross-talk between Wnt and MAPK signaling cascades, which involves CEMIP. Activation of this pathway promotes survival by potentially regulating levels of specific amino acids via a Myc-associated cascade. Targeting this node may provide a promising avenue for treatment of colon cancers that have acquired resistance to targeted therapies
Research center :
GIGA Molecular Biology of Diseases - ULiège
Disciplines :
Oncology
Author, co-author :
Duong, Hong Quan 
Nemazanyy, Ivan
Rambow, Florian
Tang, Seng Chuan ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
Delaunay, Sylvain ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
Tharun, Lars
Florin, Alexandra
Büttner, Reinhard
VAN DAELE, Daniel ;  Centre Hospitalier Universitaire de Liège - CHU > Service de gastroentérologie, hépatologie, onco. digestive
Close, Pierre  ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
Marine, Jean-Christophe
Shostak, Kateryna ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
Chariot, Alain ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
More authors (3 more) Less
Language :
English
Title :
The endosomal protein CEMIP links Wnt signaling to MEK1-ERK1/2 activation in Selumetinib-resistant intestinal organoids
Publication date :
18 June 2018
Journal title :
Cancer Research
ISSN :
0008-5472
eISSN :
1538-7445
Publisher :
American Association for Cancer Research, United States
Pages :
DOI: 10.1158/0008-5472.CAN-17-3149
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
WELBIO - Institut wallon virtuel de recherche d'excellence dans les domaines des sciences de la vie [BE]
Fonds Léon Fredericq [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Fondation contre le Cancer [BE]
Télévie [BE]
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