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August 24, 2025Open Access

Ex vivo and in vivo CRISPR/Cas9 screenings identify the roles of protein N-glycosylation in regulating T-cell activation and functions

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Authors

YHYu HongXSXiaofang SiWLWenjing Liu

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Overview

CRISPR/Cas9 screenings identify B4GALT1's impact on T-cell activation in tumor immunotherapy, suggesting new therapy targets.

Key Points

  • Inactivation of B4GALT1 enhances T-cell receptor activation and improves CD8+ T-cell functions, leading to better immunotherapy outcomes.
  • Affinity purification identified substrates of B4GALT1 on CD8+ T-cell surfaces, crucial for TCR and CD8 interaction.
  • Observational analysis shows B4GALT1 expression in tumor-infiltrated CD8+ T-cells correlates negatively with patient prognosis.
  • Suppressing B4GALT1 enhances TCR-T-cell functions but does not affect CAR-T cells, indicating a specific pathway for therapeutic targeting.

Cite This Study

Hong et al. (2025) studied this question.

synapsesocial.com/papers/68af5bc7ad7bf08b1eadff7ehttps://doi.org/10.1101/2025.08.20.671236
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