TY - JOUR
T1 - BCL9L Dysfunction Impairs Caspase-2 Expression Permitting Aneuploidy Tolerance in Colorectal Cancer
AU - López-García, Carlos
AU - Sansregret, Laurent
AU - Domingo, Enric
AU - McGranahan, Nicholas
AU - Hobor, Sebastijan
AU - Birkbak, Nicolai Juul
AU - Horswell, Stuart
AU - Grönroos, Eva
AU - Favero, Francesco
AU - Rowan, Andrew J
AU - Matthews, Nicholas
AU - Begum, Sharmin
AU - Phillimore, Benjamin
AU - Burrell, Rebecca
AU - Oukrif, Dahmane
AU - Spencer-Dene, Bradley
AU - Kovac, Michal
AU - Stamp, Gordon
AU - Stewart, Aengus
AU - Danielsen, Havard
AU - Novelli, Marco
AU - Tomlinson, Ian
AU - Swanton, Charles
N1 - Copyright © 2017 The Francis Crick Institute. Published by Elsevier Inc. All rights reserved.
PY - 2017/1/9
Y1 - 2017/1/9
N2 - Chromosomal instability (CIN) contributes to cancer evolution, intratumor heterogeneity, and drug resistance. CIN is driven by chromosome segregation errors and a tolerance phenotype that permits the propagation of aneuploid genomes. Through genomic analysis of colorectal cancers and cell lines, we find frequent loss of heterozygosity and mutations in BCL9L in aneuploid tumors. BCL9L deficiency promoted tolerance of chromosome missegregation events, propagation of aneuploidy, and genetic heterogeneity in xenograft models likely through modulation of Wnt signaling. We find that BCL9L dysfunction contributes to aneuploidy tolerance in both TP53-WT and mutant cells by reducing basal caspase-2 levels and preventing cleavage of MDM2 and BID. Efforts to exploit aneuploidy tolerance mechanisms and the BCL9L/caspase-2/BID axis may limit cancer diversity and evolution.
AB - Chromosomal instability (CIN) contributes to cancer evolution, intratumor heterogeneity, and drug resistance. CIN is driven by chromosome segregation errors and a tolerance phenotype that permits the propagation of aneuploid genomes. Through genomic analysis of colorectal cancers and cell lines, we find frequent loss of heterozygosity and mutations in BCL9L in aneuploid tumors. BCL9L deficiency promoted tolerance of chromosome missegregation events, propagation of aneuploidy, and genetic heterogeneity in xenograft models likely through modulation of Wnt signaling. We find that BCL9L dysfunction contributes to aneuploidy tolerance in both TP53-WT and mutant cells by reducing basal caspase-2 levels and preventing cleavage of MDM2 and BID. Efforts to exploit aneuploidy tolerance mechanisms and the BCL9L/caspase-2/BID axis may limit cancer diversity and evolution.
KW - Aged
KW - Aged, 80 and over
KW - Aneuploidy
KW - Animals
KW - BH3 Interacting Domain Death Agonist Protein/physiology
KW - Caspase 2/analysis
KW - Chromosome Segregation
KW - Colorectal Neoplasms/genetics
KW - Cysteine Endopeptidases/analysis
KW - DNA-Binding Proteins/genetics
KW - HCT116 Cells
KW - Humans
KW - Mice
KW - Middle Aged
KW - Mutation
KW - Proto-Oncogene Proteins c-mdm2/physiology
KW - Transcription Factors/genetics
KW - Tumor Suppressor Protein p53/physiology
U2 - 10.1016/j.ccell.2016.11.001
DO - 10.1016/j.ccell.2016.11.001
M3 - Journal article
C2 - 28073006
SN - 1535-6108
VL - 31
SP - 79
EP - 93
JO - Cancer Cell
JF - Cancer Cell
IS - 1
ER -