Targeting serotonin transporter boosts tumor-fighting T cells.

Gershon, Michael D · Cell · 2025

editorial · Level V

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Abstract

In this issue of Cell, Yang and colleagues demonstrate that autocrine activation of serotonin receptors on tumor-infiltrating CD8<sup>+</sup> T cells enhances antitumor immunity. Modulating serotonin signaling may provide a new approach to therapy for cancer. Serotonin-targeting drugs such as SSRIs and others, developed to fight depression, may thus be repurposed for cancer immunotherapy.

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