TAOK3 is a serine/threonine kinase that functions as a critical regulator of MAPK signaling cascades, with diverse roles across immune, metabolic, and developmental contexts. TAOK3 acts upstream of the p38 and JNK pathways, mediating phosphorylation of MAP2K3/MAP2K6 to activate p38 in response to DNA damage 1. In T cell biology, TAOK3 positively regulates TCR signaling by phosphorylating PTPN6/SHP1 at Thr-394, leading to its proteasomal degradation and sustained LCK activation 12. TAOK3 activates JNK signaling in osteoblasts, promoting differentiation and skeletal mineralization 3, and enhances hepatocyte lipid storage by inhibiting beta-oxidation 4. Functionally, TAOK3 is essential for dendritic cell-mediated TH2 responses and ILC2 proliferation in allergic asthma, with kinase-dead mutations abolishing these functions 5. In adipose tissue, TAOK3 negatively regulates ST2+ regulatory T cells through IL-33 signaling, affecting metabolic homeostasis during obesity 6. Pathologically, TAOK3 promotes esophageal squamous cell carcinoma progression and cisplatin resistance by enhancing autophagy through KMT2C-IRGM signaling 7, and facilitates M2 macrophage polarization in chr12 pancreatitis via the TAOK3-JNK axis 8. These findings establish TAOK3 as a potential therapeutic target across cancer, inflammatory, and metabolic diseases.