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Bcl-6 directly represses the gene program of the glycolysis pathway #MMPMID25194422
Nat Immunol 2014[Oct]; 15 (10): 957-64 PMID25194422show ga
Despite our increasing knowledge of the molecular events that induce the glycolysis pathway in effector T cells, very little is known about the transcriptional mechanisms that dampen the glycolysis program in quiescent cell populations such as memory T cells. Here, we show that the transcription factor Bcl-6 directly repressed genes involved in the glycolysis pathway, including Slc2a1, Slc2a3, Pkm2 and Hk2, in TH1 cells exposed to low amounts of interleukin 2 (IL-2). Thus, Bcl-6 plays an opposing role to the IL-2-sensitive glycolytic transcriptional program that c-Myc and HIF-1? promote in effector T cells. Additionally, the Th1-lineage-specifying factor T-bet functionally antagonized the Bcl-6-dependent repression of genes in the glycolysis pathway, implicating the molecular balance between these two factors in metabolic gene program regulation.