Translational control of breast cancer plasticity.
5' Untranslated Regions
/ genetics
Antineoplastic Agents
/ pharmacology
Breast Neoplasms
/ drug therapy
Cell Hypoxia
Cell Line, Tumor
Eukaryotic Initiation Factor-2
/ genetics
Female
Gene Expression Regulation, Neoplastic
/ drug effects
Humans
MCF-7 Cells
Nanog Homeobox Protein
/ genetics
Nodal Protein
/ genetics
Phosphorylation
/ drug effects
Protein Biosynthesis
/ genetics
RNA Isoforms
/ genetics
Snail Family Transcription Factors
/ genetics
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
19 05 2020
19 05 2020
Historique:
received:
20
03
2019
accepted:
27
04
2020
entrez:
20
5
2020
pubmed:
20
5
2020
medline:
11
8
2020
Statut:
epublish
Résumé
Plasticity of neoplasia, whereby cancer cells attain stem-cell-like properties, is required for disease progression and represents a major therapeutic challenge. We report that in breast cancer cells NANOG, SNAIL and NODAL transcripts manifest multiple isoforms characterized by different 5' Untranslated Regions (5'UTRs), whereby translation of a subset of these isoforms is stimulated under hypoxia. The accumulation of the corresponding proteins induces plasticity and "fate-switching" toward stem cell-like phenotypes. Mechanistically, we observe that mTOR inhibitors and chemotherapeutics induce translational activation of a subset of NANOG, SNAIL and NODAL mRNA isoforms akin to hypoxia, engendering stem-cell-like phenotypes. These effects are overcome with drugs that antagonize translational reprogramming caused by eIF2α phosphorylation (e.g. ISRIB), suggesting that the Integrated Stress Response drives breast cancer plasticity. Collectively, our findings reveal a mechanism of induction of plasticity of breast cancer cells and provide a molecular basis for therapeutic strategies aimed at overcoming drug resistance and abrogating metastasis.
Identifiants
pubmed: 32427827
doi: 10.1038/s41467-020-16352-z
pii: 10.1038/s41467-020-16352-z
pmc: PMC7237473
doi:
Substances chimiques
5' Untranslated Regions
0
Antineoplastic Agents
0
Eukaryotic Initiation Factor-2
0
Nanog Homeobox Protein
0
Nodal Protein
0
RNA Isoforms
0
SNAI1 protein, human
0
Snail Family Transcription Factors
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
2498Subventions
Organisme : NIDDK NIH HHS
ID : R01 DK053307
Pays : United States
Organisme : CIHR
ID : PLS 9538
Pays : Canada
Organisme : CIHR
ID : PLS 95381
Pays : Canada
Organisme : CIHR
ID : MOP 38160
Pays : Canada
Organisme : NIDDK NIH HHS
ID : R37 DK060596
Pays : United States
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