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May 12, 2026

MiR-155-driven loss of ICOSL and SOCS1 in EBV+ gastric cancers renders abundant cytotoxic T cells ineffective, enabling immune evasion.

Gerard J. Nuovo Koshi Mimori Hajime Otsu Esmerina Tili Carlo M Croce

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Key Points

This research aims to understand how MiR-155 influences ICOSL and SOCS1 in EBV+ gastric cancers and affects T cell effectiveness.
Analyzed the expression levels of MiR-155, ICOSL, and SOCS1 in gastric cancer samples.
Evaluated the functional implications of these alterations on cytotoxic T cell responses against cancer cells.
Elevated levels of MiR-155 correlated with reduced ICOSL and SOCS1, impairing T cell function.
Presence of cytotoxic T cells did not lead to effective eradication of cancer cells, indicating immune evasion.

Implication

The research reveals how MiR-155 impacts T cell effectiveness in EBV+ gastric cancers, suggesting a mechanism for immune evasion.

Abstract

, along with ICOSL status determines whether tumors attract T cells and whether those T cells can effectively eradicate cancer cells.

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Cite This Study

Nuovo et al. (2026) studied this question.

synapsesocial.com/papers/6a01720a3a9f334c2827222c https://doi.org/10.1073/pnas.2536375123

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