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- W4362546408 abstract "<div>Abstract<p>Epigenetic regulators are a class of promising targets in combination with immune checkpoint inhibitors for cancer treatment, but the impact of the broad effects of perturbing epigenetic regulators on tumor immunotherapy remains to be fully explored. Here we show that ablation of the histone demethylase LSD1 in multiple tumor cells induces TGFβ expression, which exerts an inhibitory effect on T-cell immunity through suppressing the cytotoxicity of intratumoral CD8<sup>+</sup> T cells and consequently dampens the antitumor effect of LSD1 ablation–induced T-cell infiltration. Importantly, concurrent depletion of LSD1 and TGFβ in combination with PD-1 blockade significantly increases both CD8<sup>+</sup> T-cell infiltration and cytotoxicity, leading to eradication of poorly immunogenic tumors and a long-term protection from tumor rechallenge. Thus, combining LSD1 inhibition with blockade of TGFβ and PD-1 may represent a promising triple combination therapy for treating certain refractory tumors.</p>SignIficance:<p>Cotargeting LSD1 and TGFβ cooperatively elevates intratumoral CD8<sup>+</sup> T-cell infiltration and unleashes their cytotoxicity, leading to tumor eradication upon anti–PD-1 treatment. Our findings illustrate a duality of epigenetic perturbations in immunotherapy and implicate the combination of LSD1 inhibition with dual PD-1/TGFβ blockade in treating certain poorly immunogenic tumors.</p><p><i>This article is highlighted in the In This Issue feature, p. 1861</i></p></div>" @default.
- W4362546408 created "2023-04-06" @default.
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- W4362546408 date "2023-04-03" @default.
- W4362546408 modified "2023-10-18" @default.
- W4362546408 title "Data from Simultaneous Inhibition of LSD1 and TGFβ Enables Eradication of Poorly Immunogenic Tumors with Anti–PD-1 Treatment" @default.
- W4362546408 doi "https://doi.org/10.1158/2159-8290.c.6549170.v1" @default.
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