Xu Wang, Sheng-Qiao Fu, Xiao Yuan, Feng Yu, Qian Ji, Hao-Wen Tang, Rong-Kun Li, Shan Huang, Pei-Qi Huang, Wei-Ting Qin, Hao Zuo, Chang Du, Lin-Li Yao, Hui Li, Jun Li, Dong-Xue Li, Yan Yang, Shu-Yu Xiao, Aziguli Tulamaiti, Xue-Feng Wang, Chun-Hua Dai, Xu Zhang, Shu-Heng Jiang, Li-Peng Hu, Xue-Li Zhang, Zhi-Gang Zhang
Apart from the canonical serotonin (5-hydroxytryptamine [5-HT])-receptor signaling transduction pattern, 5-HT-involved post-translational serotonylation has recently been noted. Here, we report a glyceraldehyde-3-phosphate dehydrogenase (GAPDH) serotonylation system that promotes the glycolytic metabolism and antitumor immune activity of CD8+ T cells. Tissue transglutaminase 2 (TGM2) transfers 5-HT to GAPDH glutamine 262 and catalyzes the serotonylation reaction. Serotonylation supports the cytoplasmic localization of GAPDH, which induces a glycolytic metabolic shift in CD8+ T cells and contributes to antitumor immunity...
January 4, 2024: Molecular Cell