| 1999 |
TNIK was cloned as a novel GCK family kinase that interacts with both TRAF2 and NCK. Overexpression of wild-type TNIK (but not a kinase-dead mutant) disrupts F-actin structure and inhibits cell spreading in Phoenix-A, NIH-3T3, and HeLa cells. TNIK activates the JNK pathway, with this activation mediated solely by the GCK homology region rather than the kinase domain. TNIK can phosphorylate Gelsolin in vitro. |
Yeast two-hybrid/co-IP (TRAF2/NCK interaction), transient overexpression with kinase mutant, in vitro kinase assay (Gelsolin phosphorylation), F-actin immunofluorescence |
The Journal of biological chemistry |
High |
10521462
|
| 2009 |
TNIK is a direct binding partner of TCF4 and β-catenin (identified by proteomics, confirmed by in vitro binding assays), is recruited to Wnt target gene promoters in a β-catenin-dependent manner, and phosphorylates TCF4 in vitro. Depletion of TNIK or expression of TNIK kinase-dead mutants abrogates TCF-LEF transcription, establishing TNIK kinase activity as essential for Wnt target gene activation. |
Proteomics pull-down (TCF4 interactome in mouse intestinal crypts), in vitro binding assay, in vitro kinase assay (TCF4 phosphorylation), ChIP, siRNA depletion + TCF-LEF reporter assay, expression array |
The EMBO journal |
High |
19816403
|
| 2010 |
TNIK and MINK are postsynaptically enriched proteins whose dendritic clustering is bidirectionally regulated by the activation state of Rap2. TNIK expression in neurons is required for normal dendritic arborization and surface expression of AMPA receptors. Unlike MINK, TNIK-mediated reduction of neuronal complexity does not require Rap2 activity, and TNIK does not mediate Rap2-driven removal of surface AMPA receptors, indicating TNIK and MINK employ distinct mechanisms downstream of Rap2. |
Neuronal overexpression/knockdown, immunostaining for surface AMPA receptors, dendritic morphology analysis, dominant-negative Rap2 constructs |
The Journal of neuroscience |
Medium |
21048137
|
| 2010 |
TNIK interacts with DISC1 at synapses; the DISC1-TNIK interaction stabilizes levels of key postsynaptic density proteins and regulates synaptic composition and activity. |
Co-immunoprecipitation (synaptic fractions), synaptic protein quantification after DISC1/TNIK manipulation |
Molecular psychiatry |
Medium |
20838393
|
| 2012 |
In vivo (Tnik knockout mice), TNiK binds protein complexes linking it to the NMDA receptor via AKAP9. NMDA and metabotropic receptors bidirectionally regulate TNiK phosphorylation. TNiK is required for AMPA receptor expression and synaptic function. In the nucleus, TNiK organizes complexes; its absence leads to elevated GSK3β activity and altered Wnt signaling. TNiK knockout mice show impaired dentate gyrus neurogenesis, deficits in spatial discrimination and paired-associate learning, and hyperlocomotion reversible by GSK3β inhibitors. |
Knockout mouse model, co-immunoprecipitation, western blot (phosphorylation), electrophysiology, behavioral testing (touchscreen), pharmacological rescue (GSK3β inhibitor) |
The Journal of neuroscience |
High |
23035106
|
| 2012 |
TNIK is required for canonical NF-κB and JNK signaling in B cells stimulated by EBV oncoprotein LMP1 and the CD40 receptor. TNIK forms an activation-induced complex with TRAF6, TAK1/TAB2, and IKKβ at the LMP1 signalosome. TNIK directly binds TRAF6, which bridges TNIK's interaction with LMP1's C-terminus. The N-terminal TNIK kinase domain is essential for IKKβ/NF-κB activation, while the C-terminus is required for JNK activation. |
Functional proteomics (LMP1 signalosome pull-down), RNAi knockdown + NF-κB/JNK reporter assays, co-immunoprecipitation, domain-deletion mapping |
PLoS biology |
High |
22904686
|
| 2012 |
In Xenopus, TNIK (xTNIK) and MINK are integral components of both canonical and non-canonical Wnt pathways. xTNIK and xMINK interact and are proteolytically cleaved in vivo to generate kinase domain fragments (active in signaling) and CNH domain fragments (suppressive). The kinase domain of xTNIK mediates both canonical and non-canonical Wnt signaling, whereas the analogous xMINK kinase domain fragment antagonizes canonical Wnt signaling. |
Xenopus embryo overexpression, domain truncation constructs, co-immunoprecipitation, in vivo proteolytic cleavage analysis, Wnt reporter assays |
PloS one |
Medium |
22984420
|
| 2013 |
Rap2 acts via TNIK to regulate stability of the Wnt receptor LRP6. Knockdown of Rap2 causes proteasome/lysosome-dependent degradation of LRP6; TNIK acts downstream of Rap2 to rescue LRP6 stability. Rap2 and LRP6 physically associate, and TNIK rescues the inhibitory effects of Rap2 depletion on Wnt-dependent gene transcription and neural crest induction. |
Xenopus embryo knockdown/rescue, co-immunoprecipitation, proteasome/lysosome inhibitor treatment, Wnt reporter assay |
Biochemical and biophysical research communications |
Medium |
23743195
|
| 2013 |
TNIK protein levels dynamically change in response to TNFα stimulation in a TRAF2-dependent manner. TRAF2 negatively modulates TNIK protein levels by regulating ubiquitin conjugation to TNIK. |
TNFα stimulation time course, siRNA knockdown of TRAF2, ubiquitination assay |
Human cell |
Low |
23355318
|
| 2015 |
TNIK directly phosphorylates TCF4 and regulates Wnt signaling. Using a selective TNIK inhibitor and phosphomotif antibody immunoprecipitation followed by mass spectrometry, endogenous neuronal TNIK substrates were identified, including p120-catenin, δ-catenin, and ARVCF (delta-catenin family). TNIK-induced p120-catenin phosphorylation requires intact kinase activity and phosphorylation of TNIK at T181 and T187 in the activation loop. TNIK inhibitor or shRNA knockdown reduces endogenous p120-catenin phosphorylation in cells. |
Selective TNIK inhibitor, phosphomotif antibody immunoprecipitation + mass spectrometry, site-directed mutagenesis (T181A, T187A activation-loop mutants), shRNA knockdown, cell-based phosphorylation assay |
The Journal of pharmacology and experimental therapeutics |
High |
26645429
|
| 2015 |
TNIK is concentrated in dendritic spines of neurons throughout the adult mouse brain, with particularly high enrichment near the lateral edge of the synapse (a microdomain critical for glutamatergic signaling), established by high-resolution light and electron microscopic immunocytochemistry. |
High-resolution light microscopy and electron microscopic immunocytochemistry |
The Journal of comparative neurology |
Medium |
25753355
|
| 2015 |
TNIK mediates neuropathic allodynia through a TRAF2/TNIK/GluR1 cascade. TNIK couples with GluR1, and TNIK-mediated phosphorylation drives GluR1 trafficking to the plasma membrane in dorsal horn neurons after spinal nerve ligation. TRAF2, regulated by Fbxo3-dependent Fbxl2 ubiquitination, contributes to allodynia by modifying TNIK/GluR1 phosphorylation. TNF-α upregulates this cascade via Fbxo3/Fbxl2-dependent modification. |
Spinal nerve ligation model, intrathecal siRNA knockdown, immunoprecipitation (TNIK-GluR1 coupling), subcellular fractionation (GluR1 trafficking), behavioral allodynia testing, Fbxo3 inhibitor treatment |
The Journal of neuroscience |
Medium |
26674878
|
| 2016 |
TNIK is an essential regulatory component of the TCF4/β-catenin transcriptional complex. Tnik-deficient mice are resistant to azoxymethane-induced colon tumorigenesis and develop fewer intestinal tumors in the Apc(min/+) background. X-ray co-crystal structure of TNIK with NCB-0846 reveals the inhibitor binds TNIK in an inactive conformation; this inactive-conformation binding mode is essential for Wnt inhibition. |
Tnik knockout mouse (tumor resistance), X-ray crystallography (TNIK/NCB-0846 co-crystal), in vivo tumorigenesis models, sphere-forming and tumor-forming assays |
Nature communications |
High |
27562646
|
| 2017 |
TNIK (MAP4K7), together with MAP4K4 and MINK1 (MAP4K6), acts redundantly as an upstream regulator of DLK activation and downstream JNK-dependent c-Jun phosphorylation in neurons under trophic factor withdrawal stress. Pharmacological inhibition of MAP4Ks blocks DLK stabilization/phosphorylation within axons and prevents retrograde translocation of the JNK signaling complex to the nucleus. |
Embryonic mouse DRG neurons, trophic factor withdrawal, siRNA triple knockdown (MAP4K4/MINK1/TNIK), pharmacological MAP4K inhibitors, immunofluorescence (axonal DLK), c-Jun phosphorylation western blot, neuronal survival assay |
The Journal of neuroscience |
High |
28993483
|
| 2018 |
In C. elegans, TNIK (mig-15) acts genetically downstream of Plexin (plx-1) and Rap2 (rap-2) to restrict presynaptic assembly and form tiled synaptic innervation. Overexpression of mig-15 strongly inhibits synapse formation, while mig-15 mutants display excessive ectopic synapse formation. PLX-1 suppresses local RAP-2 activity, and cycling of the RAP-2 nucleotide state is critical for synapse inhibition. |
C. elegans genetic epistasis (plx-1, rap-2, mig-15 mutants), constitutively active/GDP-locked Rap2 mutants, mig-15 overexpression, synaptic marker imaging |
eLife |
High |
30063210
|
| 2019 |
TNIK alternative splicing is competitively regulated by TDP-43 (promotes exon 15 skipping) and NOVA-1 (promotes exon 15 inclusion) via an RNA-dependent interaction. TNIK protein isoforms including/excluding exon 15 differently regulate cell spreading in non-neuronal cells and neuritogenesis in primary cortical neurons. |
iPSC neuronal differentiation, RT-PCR splicing assay, TDP-43/NOVA-1 overexpression/knockdown, RNA immunoprecipitation, neurite outgrowth assay, cell spreading assay |
Biochimica et biophysica acta. Gene regulatory mechanisms |
Medium |
31382054
|
| 2020 |
TNIK signaling downstream of CD27 (a TNF superfamily receptor) induces nuclear translocation of β-catenin and Wnt pathway activation in CD8+ T cells during priming. TNIK deficiency during T cell activation results in enhanced effector differentiation, increased glycolysis and apoptosis, and promotes symmetric over asymmetric cell division, thereby enlarging the memory CD8+ T cell pool. |
TNIK-deficient T cell adoptive transfer, LCMV infection model, β-catenin nuclear translocation imaging, metabolic (glycolysis) assay, cell division symmetry analysis, serial re-transplantation |
Nature communications |
Medium |
32242021
|
| 2021 |
TNIK phosphorylates the tumor suppressor Merlin/NF2, and both TNIK and Merlin are required for activation of focal adhesion kinase (FAK) in lung squamous cell carcinoma cells. This was established by identifying Merlin as a novel TNIK substrate and showing that TNIK and Merlin are required for FAK activation. |
In vitro kinase assay (TNIK phosphorylates Merlin), co-immunoprecipitation, TNIK genetic depletion/pharmacologic inhibition, FAK activation western blot, in vitro and in vivo LSCC growth assays |
Cancer discovery |
High |
33495197
|
| 2021 |
TNIK phosphorylates Arc at serine 67 (S67) and threonine 278 (T278). TNIK-mediated phosphorylation at these residues strongly influences Arc's subcellular distribution and self-assembly into virus-like capsids, as demonstrated by site-directed mutagenesis of S67 and T278. |
Mass spectrometry phosphosite mapping, site-directed mutagenesis (S67A, T278A), immunofluorescence (Arc subcellular distribution), capsid assembly assay |
Journal of neurochemistry |
Medium |
34077555
|
| 2021 |
TNIK (MAP4K7) is an essential element in a GPCR-EPAC1/2-RAP2c-MAP4K7-LATS1/2 signaling cascade that mediates YAP/TAZ phosphorylation and nuclear exclusion in human lung fibroblasts. Disruption of this cascade abolishes the effects of dopamine D1 receptor agonism on reducing fibroblast proliferation, contraction, and extracellular matrix production. |
siRNA knockdown of EPAC1/2, RAP2c, MAP4K7 (TNIK); YAP/TAZ nuclear localization imaging; LATS1/2 phosphorylation western blot; fibroblast functional assays (proliferation, contraction, ECM) |
Journal of cellular physiology |
Medium |
34046891
|
| 2022 |
X-ray structural analysis of TNIK bound to thiopeptide inhibitors reveals a unique substrate-competitive (non-ATP-competitive) mode of inhibition. The thiopeptide inhibitors access a site distinct from the ATP-binding pocket, establishing the structural basis for substrate-competitive TNIK inhibition. |
X-ray crystallography (TNIK/thiopeptide co-crystals), in vitro kinase inhibition assay (Ki = 3 nM), mRNA display combinatorial library selection |
Journal of the American Chemical Society |
High |
36282922
|
| 2022 |
Structural insights into TNIK inhibition show that inhibitors (including NCB-0846) bind the ATP-binding site of TNIK in an inactive conformation, and that different chemical scaffolds of nanomolar inhibitors alter the structure and function of TNIK distinctly. |
X-ray crystallography (multiple TNIK/inhibitor co-crystal structures), kinase activity assays |
International journal of molecular sciences |
High |
36361804
|
| 2023 |
TNIK governs lipid and glucose homeostasis in Drosophila and mice. Loss of the Drosophila TNIK ortholog (misshapen) impairs de novo lipogenesis in high-sugar-fed larvae. Tnik knockout mice are protected against diet-induced fat expansion, insulin resistance, and hepatic steatosis, with enhanced skeletal muscle and adipose tissue insulin-stimulated glucose uptake. |
Drosophila misshapen knockout (metabolite profiling, lipogenesis assay), Tnik knockout mouse (high-fat diet, metabolic phenotyping, insulin tolerance test, glucose uptake assay) |
Science advances |
High |
37556547
|
| 2023 |
TNIK activates EGFR signaling through direct phosphorylation of EGFR in castration-resistant prostate cancer cells. Following androgen deprivation therapy-induced reduction of AR (which normally represses TNIK transcription by forming a complex with H3K27me3), TNIK is upregulated and phosphorylates EGFR to promote CRPC progression. |
Microarray (TNIK upregulation), ChIP (AR/H3K27me3 at TNIK promoter), in vitro/cell-based kinase assay (TNIK phosphorylates EGFR), TNIK knockdown + EGFR pathway western blot |
iScience |
Medium |
38226156
|
| 2023 |
LKB1 represses TNIK expression through its kinase activity. LKB1 loss upregulates TNIK, which interacts with ARHGAP29 to promote actin cytoskeleton remodeling and CRC cell metastasis. |
CRISPR-Cas9 LKB1 KO, RNA-seq + western blot (TNIK expression), co-immunoprecipitation (TNIK-ARHGAP29), shRNA TNIK knockdown + migration/invasion assay, in vivo metastasis model |
Molecular carcinogenesis |
Medium |
37449799
|
| 2024 |
TNIK directly phosphorylates and activates ERM (Ezrin-Radixin-Moesin) proteins at the plasma membrane of primary human endothelial cells, mediating TNF-α-dependent cellular stiffness and paracellular gap formation in vitro and inflammatory oedema in vivo. TNIK kinase activity is negatively and reversibly regulated by H2O2-mediated oxidation of cysteine 202 (C202) in the kinase domain, leading to intermolecular disulfide bond formation and loss of kinase activity. |
In vitro kinase assay (TNIK phosphorylates ERM), site-directed mutagenesis (C202), H2O2 treatment + kinase activity assay, ROS inhibitor treatment + ERM phosphorylation, in vivo inflammatory oedema model, TNIK knockdown |
Science advances |
High |
39705357
|
| 2024 |
TNIK mutations in hiPSC-derived excitatory neurons dysregulate neuronal activity. Loss of TNIK protein kinase activity impairs MAPK signaling and protein phosphorylation in structural components of the postsynaptic density. The TNIK interactome in human neurons is enriched in neurodevelopmental disorder risk factors. |
hiPSC-derived excitatory neurons with TNIK patient mutations, electrophysiology, phosphoproteomics, TNIK interactome analysis |
Frontiers in molecular neuroscience |
Medium |
38638602
|
| 2025 |
TNIK in platelets promotes normal hemostasis by interacting with JNK interacting protein 1 (JIP1) to promote MLK3/MKK4/JNK pathway activation. Under hyperlipidemic conditions, TNIK binds protein kinase Cε and suppresses the NADPH oxidase 2/ROS/ERK5 pathway, thereby preventing excessive platelet activation. Megakaryocyte/platelet-specific TNIK knockout mice exhibit prolonged bleeding times, delayed arterial thrombosis, and impaired dense granule secretion under normal conditions, but accelerated thrombosis under hyperlipidemia. |
Platelet-specific Tnik knockout mice (Tnikf/fPF4-Cre+), co-immunoprecipitation (TNIK-JIP1, TNIK-PKCε), bleeding time assay, arterial thrombosis model, platelet activation assays, ROS measurement |
Blood advances |
High |
41512175
|
| 2025 |
TNIK knockdown reduces ERK5 transcriptional activity and downregulates KLF2, KLF4, and eNOS in endothelial cells. TNIK overexpression enhances ERK5 transcriptional activity. Constitutively active MEK5 rescues ERK5 transcriptional activity in TNIK-depleted cells (MEK5-dependent mechanism). Phosphorylation-deficient TNIK mutants (S764A and S769A) retain ability to enhance ERK5 transcriptional activity, indicating a kinase-independent regulatory role. TNIK knockdown increases NFκB activity and EC apoptosis. |
Mammalian one-hybrid assay (ERK5 transcriptional activity), qRT-PCR (KLF2/KLF4/eNOS), siRNA knockdown, constitutively active MEK5 rescue, phosphorylation-deficient TNIK mutants, NFκB reporter |
Frontiers in cardiovascular medicine |
Medium |
40672381
|
| 2024 |
Pharmacological or siRNA-mediated TNIK inhibition decreases cellular senescence in multiple experimental senescence models, and the TNIK inhibitor INS018_055 reduces SASP (senescence-associated secretory phenotype). Transcriptomics reveal INS018_055 reduces aging signatures and extracellular matrix fibronectin through TGF-β signaling. |
Automated robotic phenotypic screening, multiple senescence models, siRNA TNIK depletion, SASP measurement (ELISA/proteomics), transcriptomics |
Aging and disease |
Medium |
39965245
|
| 2020 |
CNK2 scaffold protein directly interacts with TNIK and directs TNIK subcellular localization in neurons. Both CNK2 and TNIK are postsynaptically localized in dendritic spines; CNK2 is required to ensure TNIK is present at correct levels and location in the postsynaptic density. |
Co-immunoprecipitation (CNK2-TNIK), immunofluorescence (co-localization in dendritic spines), CNK2 knockdown + TNIK localization |
Scientific reports |
Medium |
32235845
|