Necroptosis stimulates interferon-mediated protective anti-tumor immunity.
Cell Death Dis
; 15(6): 403, 2024 Jun 10.
Article
in En
| MEDLINE
| ID: mdl-38858387
ABSTRACT
Necroptosis is an inflammatory form of cell suicide that critically depends on the kinase activity of Receptor Interacting Protein Kinase 3 (RIPK3). Previous studies showed that immunization with necroptotic cells conferred protection against subsequent tumor challenge. Since RIPK3 can also promote apoptosis and NF-κB-dependent inflammation, it remains difficult to determine the contribution of necroptosis-associated release of damage-associated molecular patterns (DAMPs) in anti-tumor immunity. Here, we describe a system that allows us to selectively induce RIPK3-dependent necroptosis or apoptosis with minimal NF-κB-dependent inflammatory cytokine expression. In a syngeneic tumor challenge model, immunization with necroptotic cells conferred superior protection against subsequent tumor challenge. Surprisingly, this protective effect required CD4+ T cells rather than CD8+ T cells and is dependent on host type I interferon signaling. Our results provide evidence that death-dependent type I interferon production following necroptosis is sufficient to elicit protective anti-tumor immunity.
Full text:
1
Database:
MEDLINE
Main subject:
Receptor-Interacting Protein Serine-Threonine Kinases
/
Necroptosis
Limits:
Animals
/
Humans
Language:
En
Year:
2024
Type:
Article