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T Cells Convert Sugar Into Lipid Rafts to Amplify Tumor-Fighting Signals

A Cell Metabolism paper reports that glucose is diverted into glycosphingolipid synthesis to create membrane domains that drive T cell expansion by supporting cytotoxic activity.

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Overview

  • Van Andel Institute researchers demonstrated that T cells allocate a significant share of glucose to build glycosphingolipids instead of using it solely for energy production.
  • Glycosphingolipids assemble into lipid rafts on the T cell surface, clustering signaling proteins responsible for initiating cancer cell destruction.
  • Experiments showed that impairing glycosphingolipid production weakens T cell activation signals and reduces their ability to kill tumor cells.
  • Published August 5 in Cell Metabolism, the study challenges the long-held belief that glucose’s primary role in T cells is ATP generation.
  • Investigators are now exploring strategies to enhance glycosphingolipid biosynthesis as a way to boost the effectiveness of cancer immunotherapies.