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Cytotoxic T lymphocyte activation via presentation of autologous neoantigen
- Molecular classification
- Cellular process, Immune mechanism
01
Overview
Cytotoxic T lymphocyte activation via presentation of autologous neoantigen is a central mechanism underlying many modern cancer immunotherapies. It leverages patient-specific mutated peptides presented on MHC molecules to selectively activate potent anti-tumor CD8+ responses while minimizing off-target effects seen with shared self-antigens. This approach underpins both cellular therapies using expanded/engineered autologous TILs as well as next-generation personalized vaccine strategies targeting individual tumors’ mutational landscapes.
02
Mechanism of action
T cell receptor (TCR) activation by neoantigen-MHC complex leading to T cell proliferation, differentiation, and cytolytic activity.
03
Biological functions
Immune responseCell killingT cell activationAntigen presentation
04
Disease associations
Cancer
05
Safety considerations
Off-target toxicityAutoimmunity (cross-reactivity with self-antigens)Cytokine release syndrome (CRS)Immune-related adverse events (irAEs)
06
Interacting drugs
Checkpoint inhibitors (e.g., anti-PD-1, anti-PD-L1, anti-CTLA-4)
2 more in the full profile.
07
Biomarkers
Neoantigen expressionMHC expressionTCR clonalityTIL infiltrationIFNγ productionPD-L1 expression
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