Evolution of chromosome-arm aberrations in breast cancer through genetic network rewiring.
CP: Cancer
CP: Genomics
GCK-III
PDCD10
aneuploidy
basal breast cancer
cancer evolution
chromosomal arm copy number aberrations
chromosome 4p
triple-negative breast cancer
Journal
Cell reports
ISSN: 2211-1247
Titre abrégé: Cell Rep
Pays: United States
ID NLM: 101573691
Informations de publication
Date de publication:
21 Mar 2024
21 Mar 2024
Historique:
received:
01
09
2023
revised:
02
02
2024
accepted:
07
03
2024
medline:
22
3
2024
pubmed:
22
3
2024
entrez:
22
3
2024
Statut:
aheadofprint
Résumé
The basal breast cancer subtype is enriched for triple-negative breast cancer (TNBC) and displays consistent large chromosomal deletions. Here, we characterize evolution and maintenance of chromosome 4p (chr4p) loss in basal breast cancer. Analysis of The Cancer Genome Atlas data shows recurrent deletion of chr4p in basal breast cancer. Phylogenetic analysis of a panel of 23 primary tumor/patient-derived xenograft basal breast cancers reveals early evolution of chr4p deletion. Mechanistically we show that chr4p loss is associated with enhanced proliferation. Gene function studies identify an unknown gene, C4orf19, within chr4p, which suppresses proliferation when overexpressed-a member of the PDCD10-GCKIII kinase module we name PGCKA1. Genome-wide pooled overexpression screens using a barcoded library of human open reading frames identify chromosomal regions, including chr4p, that suppress proliferation when overexpressed in a context-dependent manner, implicating network interactions. Together, these results shed light on the early emergence of complex aneuploid karyotypes involving chr4p and adaptive landscapes shaping breast cancer genomes.
Identifiants
pubmed: 38517886
pii: S2211-1247(24)00316-4
doi: 10.1016/j.celrep.2024.113988
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
113988Informations de copyright
Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of interests The authors declare no competing interests.