GOT1 regulates CD8+ effector and memory T cell generation
Wei Xu, Chirag H. Patel, Liang Zhao, Im‐Hong Sun, Min Hee Oh, Im-Meng Sun, Rachel S. Helms, Jiayu Wen, Jonathan D. Powell
Abstract
T cell activation, proliferation, function, and differentiation are tightly linked to proper metabolic reprogramming and regulation. By using [U- 13 C]glucose tracing, we reveal a critical role for GOT1 in promoting CD8 + T cell effector differentiation and function. Mechanistically, GOT1 enhances proliferation by maintaining intracellular redox balance and serine-mediated purine nucleotide biosynthesis. Further, GOT1 promotes the glycolytic programming and cytotoxic function of cytotoxic T lymphocytes via posttranslational regulation of HIF protein, potentially by regulating the levels of α-ketoglutarate. Conversely, genetic deletion of GOT1 promotes the generation of memory CD8 + T cells.