Single-cell transcriptomics reveals involution mimicry during the specification of the basal breast cancer subtype.
Cell Rep
; 35(2): 108945, 2021 04 13.
Article
en En
| MEDLINE
| ID: mdl-33852842
Basal breast cancer is associated with younger age, early relapse, and a high mortality rate. Here, we use unbiased droplet-based single-cell RNA sequencing (RNA-seq) to elucidate the cellular basis of tumor progression during the specification of the basal breast cancer subtype from the luminal progenitor population in the MMTV-PyMT (mouse mammary tumor virus-polyoma middle tumor-antigen) mammary tumor model. We find that basal-like cancer cells resemble the alveolar lineage that is specified upon pregnancy and encompass the acquisition of an aberrant post-lactation developmental program of involution that triggers remodeling of the tumor microenvironment and metastatic dissemination. This involution mimicry is characterized by a highly interactive multicellular network, with involution cancer-associated fibroblasts playing a pivotal role in extracellular matrix remodeling and immunosuppression. Our results may partially explain the increased risk and poor prognosis of breast cancer associated with childbirth.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Carcinoma Basocelular
/
Neoplasias Mamarias Animales
/
Transcriptoma
/
Fibroblastos Asociados al Cáncer
/
Glándulas Mamarias Animales
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Cell Rep
Año:
2021
Tipo del documento:
Article
Pais de publicación:
Estados Unidos