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- W3217182536 abstract "Abstract INTRODUCTION Glioblastoma are a challenge for neuro-oncologists and current therapies are minimally effective. Standard-of- care treatment is almost inevitably followed by disease recurrence. Adoptive T cell transfer has emerged as a viable therapeutic for brain malignancies. While promising, the efficacy of this approach is often limited by a complex immunosuppressive tumor microenvironment. These complexities mean that more sophisticated T cell products are required. OBJECTIVES The brain tumor microenvironment provides local restraints via metabolic competition suppressing antitumor immunity, specifically inhibiting infiltration and tumoricidal functions of host and adoptively transferred tumor-reactive T cells. The overall goal of this project is to test new treatments to reverse immune dysfunction in cancer through the regulation of T cell metabolic signaling. We propose that modulating glucose pathway in T cells can potentiate their anti-tumor activity once adoptively transferred. METHODS T cells glucose metabolic pathway was modulated via glucose transporters overexpression. The functionality of metabolically modified T cells was investigated in murine and human models. RESULTS We demonstrated the existence of a competition for glucose between T cells and tumor cells, with tumor cells imposing glucose restriction mediating T cell hyporesponsiveness. Overexpression of glucose transporters such as Glut1 and Glut3 increased T cell glucose utilization and provide survival/growth advantage and enhanced T cell activation in glucose-restricted conditions. We also established that glucose transporter overexpression improves intratumoral infiltration of adoptively transferred T cells. CONCLUSION This project integrates fundamental concepts of tumor and immune metabolism in the design of immunotherapy and confirms that immunometabolism represents a viable target for new cancer therapy to treat brain tumors." @default.
- W3217182536 created "2021-12-06" @default.
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- W3217182536 date "2021-11-02" @default.
- W3217182536 modified "2023-10-16" @default.
- W3217182536 title "TAMI-27. METABOLIC MANIPULATION OF T CELLS TO TREAT BRAIN TUMORS" @default.
- W3217182536 doi "https://doi.org/10.1093/neuonc/noab196.811" @default.
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