Neutrophils resist ferroptosis and promote breast cancer metastasis through aconitate decarboxylase 1.
Cell Metab
; 35(10): 1688-1703.e10, 2023 10 03.
Article
en En
| MEDLINE
| ID: mdl-37793345
ABSTRACT
Metastasis causes breast cancer-related mortality. Tumor-infiltrating neutrophils (TINs) inflict immunosuppression and promote metastasis. Therapeutic debilitation of TINs may enhance immunotherapy, yet it remains a challenge to identify therapeutic targets highly expressed and functionally essential in TINs but under-expressed in extra-tumoral neutrophils. Here, using single-cell RNA sequencing to compare TINs and circulating neutrophils in murine mammary tumor models, we identified aconitate decarboxylase 1 (Acod1) as the most upregulated metabolic enzyme in mouse TINs and validated high Acod1 expression in human TINs. Activated through the GM-CSF-JAK/STAT5-C/EBPß pathway, Acod1 produces itaconate, which mediates Nrf2-dependent defense against ferroptosis and upholds the persistence of TINs. Acod1 ablation abates TIN infiltration, constrains metastasis (but not primary tumors), bolsters antitumor T cell immunity, and boosts the efficacy of immune checkpoint blockade. Our findings reveal how TINs escape from ferroptosis through the Acod1-dependent immunometabolism switch and establish Acod1 as a target to offset immunosuppression and improve immunotherapy against metastasis.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias de la Mama
/
Carboxiliasas
/
Ferroptosis
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Female
/
Humans
Idioma:
En
Revista:
Cell Metab
Asunto de la revista:
METABOLISMO
Año:
2023
Tipo del documento:
Article
País de afiliación:
Estados Unidos