TRAF2 and NCK-interacting protein kinase is an enzyme that in humans is encoded by the TNIKgene.[5][6][7] TNIK is involved in various cellular processes, including signal transduction, gene transcription, and cytoskeletal organization. As an emerging area of therapeutic research, TNIK inhibitors have shown potential in addressing a range of diseases, including cancer, neurological disorders, and inflammatory conditions.[8][9][10]
Germinal center kinases (GCKs), such as TNIK, are characterized by an N-terminalkinase domain and a C-terminal GCK domain that serves a regulatory function.[6][7]
Function
TNIK is a serine/threonine kinase that plays a central role in diverse cellular processes, most notably as a key regulator of the Wnt signaling pathway.[11] TNIK is recruited to the promoters of Wnt target genes where it interacts with both β-catenin and TCF4; it phosphorylates TCF4 to enable TCF/LEF-dependent transcriptional activation of Wnt target genes, a function critical for cell proliferation and stem cell maintenance, especially in intestinal and cancerous tissues.[11]
Interactions
TNIK has been shown to interact with KIAA0090,[12] although the significance is unclear. TNIK has been shown to phosphorylate Gelsolin, a protein involved in F-actin depolymerisation thus inducing cytoskeletal changes.[6]
Clinical significance
TNIK plays an important role in pulmonary fibrosis. TNIK inhibitors are used in the treatment of pulmonary fibrosis.[9] TNIK has increasingly been of interest in research into the biology of ageing.[13]
↑ Ewald CY, Pulous FE, Lok SW, Pun FW, Aliper A, Ren F, etal. (June 2024). "TNIK's emerging role in cancer, metabolism, and age-related diseases". Trends in Pharmacological Sciences. 45 (6): 478–489. doi:10.1016/j.tips.2024.04.010. hdl:20.500.11850/677315. PMID38777670.
Brill LM, Salomon AR, Ficarro SB, Mukherji M, Stettler-Gill M, Peters EC (May 2004). "Robust phosphoproteomic profiling of tyrosine phosphorylation sites from human T cells using immobilized metal affinity chromatography and tandem mass spectrometry". Analytical Chemistry. 76 (10): 2763–2772. doi:10.1021/ac035352d. PMID15144186.
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