Metabolite signaling promotes the recruitment of immunosuppressive cells to tumors

Metabolite-sensing G protein-coupled receptors act as critical signaling hubs that connect metabolism to immunity in cancer. Here we show that activation of the lactate receptor HCAR1 in colorectal tumor cells leads to the recruitment of immunosuppressive PMN-MDSCs to tumors, thereby impairing anti-tumor immunity and diminishing the effectiveness of immunotherapies.

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