To investigate the role of NOSIP overexpression in enhancing the persistence of antigen-specific CD8+ T cells under chronic antigen stimulation.
Approach:
Key Findings:
NOSIP overexpression preserved a less differentiated CX3CR1neg CD8+ T cell subset.
NOSIP overexpression inhibited the progression of CD8+ T cells toward an apoptosis-prone CX3CR1hi state.
Improved tumor control was observed in NOSIP-overexpressing CD8+ T cells in a tumor model.
NOSIP overexpression increased CD8+ T cell responsiveness to programmed death-ligand 1 blockade.
Interpretation:
The findings suggest that NOSIP plays a critical role in sustaining long-term CD8+ T cell responses during chronic antigen exposure, potentially serving as a therapeutic target.
Limitations:
The specific mechanisms by which NOSIP modulates CD8+ T cell function and persistence require further investigation.
Conclusion:
NOSIP overexpression enhances the persistence and functionality of CD8+ T cells under chronic stimulation, indicating its potential as a target for immunotherapy.