Induced Chromosomal Aneuploidy Results in Global and Consistent Deregulation of the Transcriptome of Cancer Cells.
Aneuploidy
Chromosomes
/ genetics
Colorectal Neoplasms
/ genetics
Comparative Genomic Hybridization
DNA Copy Number Variations
/ genetics
Gene Expression Regulation, Neoplastic
Humans
Monomeric GTP-Binding Proteins
/ genetics
Neoplasm Proteins
/ genetics
Transcriptional Activation
/ genetics
Transcriptome
/ genetics
Journal
Neoplasia (New York, N.Y.)
ISSN: 1476-5586
Titre abrégé: Neoplasia
Pays: United States
ID NLM: 100886622
Informations de publication
Date de publication:
07 2019
07 2019
Historique:
received:
06
03
2019
revised:
22
04
2019
accepted:
24
04
2019
pubmed:
8
6
2019
medline:
18
12
2019
entrez:
8
6
2019
Statut:
ppublish
Résumé
Chromosomal aneuploidy is a defining feature of epithelial cancers. The pattern of aneuploidies is cancer-type specific. For instance, the gain of chromosome 13 occurs almost exclusively in colorectal cancer. We used microcell-mediated chromosome transfer to generate gains of chromosome 13 in the diploid human colorectal cancer cell line DLD-1. Extra copies of chromosome 13 resulted in a significant and reproducible up-regulation of transcript levels of genes on chromosome 13 (P = .0004, FDR = 0.01) and a genome-wide transcriptional deregulation in all 8 independent clones generated. Genes contained in two clusters were particularly affected: the first cluster on cytoband 13q13 contained 7 highly up-regulated genes (NBEA, MAB21L1, DCLK1, SOHLH2, CCDC169, SPG20 and CCNA1, P = .0003) in all clones. A second cluster was located on 13q32.1 and contained five upregulated genes (ABCC4, CLDN10, DZIP1, DNAJC3 and UGGT2, P = .003). One gene, RASL11A, localized on chromosome band 13q12.2, escaped the copy number-induced overexpression and was reproducibly and significantly down-regulated on the mRNA and protein level (P = .0001, FDR = 0.002). RASL11A expression levels were also lower in primary colorectal tumors as compared to matched normal mucosa (P = .0001, FDR = 0.0001. Overexpression of RASL11A increases cell proliferation and anchorage independent growth while decreasing cell migration in +13 clones. In summary, we observed a strict correlation of genomic copy number and resident gene expression levels, and aneuploidy dependent consistent genome-wide transcriptional deregulation.
Identifiants
pubmed: 31174021
pii: S1476-5586(19)30128-9
doi: 10.1016/j.neo.2019.04.009
pmc: PMC6551473
pii:
doi:
Substances chimiques
Neoplasm Proteins
0
RASL11A protein, human
EC 3.6.1.-
Monomeric GTP-Binding Proteins
EC 3.6.5.2
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
721-729Informations de copyright
Copyright © 2019. Published by Elsevier Inc.
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