Progestogen-driven B7-H4 contributes to onco-fetal immune tolerance.
Cell
; 187(17): 4713-4732.e19, 2024 Aug 22.
Article
en En
| MEDLINE
| ID: mdl-38968937
ABSTRACT
Immune tolerance mechanisms are shared in cancer and pregnancy. Through cross-analyzing single-cell RNA-sequencing data from multiple human cancer types and the maternal-fetal interface, we found B7-H4 (VTCN1) is an onco-fetal immune tolerance checkpoint. We showed that genetic deficiency of B7-H4 resulted in immune activation and fetal resorption in allogeneic pregnancy models. Analogously, B7-H4 contributed to MPA/DMBA-induced breast cancer progression, accompanied by CD8+ T cell exhaustion. Female hormone screening revealed that progesterone stimulated B7-H4 expression in placental and breast cancer cells. Mechanistically, progesterone receptor (PR) bound to a newly identified -58 kb enhancer, thereby mediating B7-H4 transcription via the PR-P300-BRD4 axis. PR antagonist or BRD4 degrader potentiated immunotherapy in a murine B7-H4+ breast cancer model. Thus, our work unravels a mechanistic and biological connection of a female sex hormone (progesterone) to onco-fetal immune tolerance via B7-H4 and suggests that the PR-P300-BRD4 axis is targetable for treating B7-H4+ cancer.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Progestinas
/
Progesterona
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Inhibidor 1 de la Activación de Células T con Dominio V-Set
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Tolerancia Inmunológica
Límite:
Animals
/
Female
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Humans
/
Pregnancy
Idioma:
En
Revista:
Cell
Año:
2024
Tipo del documento:
Article
País de afiliación:
Estados Unidos