| 1999 |
TAK1 activation stimulates NLK kinase activity, and NLK phosphorylates TCF/LEF transcription factors, inhibiting the interaction of the β-catenin-TCF complex with DNA, thereby negatively regulating the Wnt/β-catenin signaling pathway. Injection of NLK suppresses β-catenin-induced axis duplication in Xenopus embryos. |
In vitro kinase assay, Xenopus microinjection, transcriptional reporter assay, DNA-binding assay |
Nature |
High |
10391247
|
| 1998 |
Murine NLK (Nlk) is a serine/threonine kinase that autophosphorylates; mutation of the ATP-binding Lys-155 to methionine or the activating threonine in kinase domain VIII abolishes autophosphorylation. NLK localizes predominantly to the nucleus (60–70%) with 30–40% cytoplasmic. |
Autophosphorylation kinase assay, site-directed mutagenesis, subcellular fractionation, immunofluorescence microscopy |
Proceedings of the National Academy of Sciences of the United States of America |
High |
9448268
|
| 2003 |
The Wnt-5a/Ca2+ pathway activates CaMKII, which in turn stimulates the TAK1-NLK cascade. Wnt-5a overexpression in HEK293 cells activates NLK through TAK1, and activation of the chimeric receptor Rfz-2 activates endogenous CaMKII, TAK1, and NLK, inhibiting β-catenin-induced transcriptional activation. |
Kinase activity assay, chimeric receptor stimulation, transcriptional reporter assay, overexpression in HEK293 cells |
Molecular and cellular biology |
High |
12482967
|
| 2004 |
NLK binds directly to c-Myb together with HIPK2, phosphorylates c-Myb at multiple sites, leading to its ubiquitination and proteasome-dependent degradation in response to Wnt-1 signaling via the TAK1-HIPK2-NLK pathway. |
Co-immunoprecipitation, in vitro kinase assay, ubiquitination assay, proteasome inhibitor experiments |
Genes & development |
High |
15082531
|
| 2004 |
The TAK1-NLK cascade phosphorylates STAT3 at serine residues; this phosphorylation is essential for TGF-β/activin-mediated mesoderm induction in Xenopus. Activin activates NLK, which directly phosphorylates STAT3. |
In vitro kinase assay, Xenopus morpholino depletion, co-expression rescue experiments, phosphorylation assay |
Genes & development |
High |
15004007
|
| 2006 |
NLK associates with NARF (NLK-associated RING finger protein), an E3 ubiquitin ligase that uses E2-25K to ubiquitylate TCF/LEF. NLK kinase activity augments NARF binding and ubiquitylation of TCF/LEF, leading to proteasomal degradation of TCF/LEF and suppression of Wnt/β-catenin signaling. |
Yeast two-hybrid, Co-IP, in vitro ubiquitylation assay, Xenopus axis duplication assay |
The Journal of biological chemistry |
High |
16714285
|
| 2005 |
NLK phosphorylates A-Myb (but does not induce its degradation), inhibits the association between A-Myb and the coactivator CBP, and induces methylation of histone H3 at lysine-9 at A-Myb-bound promoters. NLK and HIPK2 both bind directly to A-Myb. |
Co-IP, in vitro kinase assay, chromatin immunoprecipitation, transcriptional reporter assay |
Molecular biology of the cell |
Medium |
16055500
|
| 2008 |
Fbxw7α (F-box protein of SCF complex) directly binds c-Myb via its WD40 domain and induces c-Myb ubiquitination in a Wnt-1- and NLK-dependent manner. NLK phosphorylation of c-Myb enhances the c-Myb/Fbxw7α interaction; a c-Myb phosphorylation-site mutant fails to interact with Fbxw7α. NLK also binds Cul1 (SCF component). |
Co-IP, in vitro ubiquitination assay, mutant binding assay, siRNA knockdown |
The Journal of biological chemistry |
High |
18765672
|
| 2003 |
HMG2L1 is an NLK-interacting protein identified by yeast two-hybrid screening; interaction confirmed in mammalian cells. HMG2L1 negatively regulates Wnt/β-catenin signaling, inhibiting β-catenin-stimulated transcriptional activity and Wnt-induced axis duplication in Xenopus. |
Yeast two-hybrid, Co-IP in mammalian cells, Xenopus axis duplication assay, transcriptional reporter assay |
Genes to cells : devoted to molecular & cellular mechanisms |
Medium |
12875653
|
| 2010 |
TAB2 directly interacts with NLK and functions as a scaffold protein to facilitate the interaction between TAK1 and NLK. The intermediate region (residues 292–417) of TAB2 mediates NLK binding. TAB2 knockdown abolishes the TAK1-NLK interaction and NLK activation; TAB2 mediates TAK1-dependent NLK activation and LEF1 polyubiquitylation, inhibiting canonical Wnt signaling. Wnt3a stimulation increases the TAK1-TAB2-NLK complex. |
Co-IP, siRNA knockdown, domain-mapping mutant analysis, ubiquitylation assay, kinase assay |
The Journal of biological chemistry |
High |
20194509
|
| 2011 |
NLK phosphorylates the PERIOD (PER) protein at the 'per-short' domain in Drosophila, initiating a hierarchical phosphorylation cascade: NLK/NEMO phosphorylation at the per-short domain stimulates DOUBLETIME (DBT/CK1δ/ε) phosphorylation at nearby sites, delaying progressive DBT phosphorylation at distal sites required for SLIMB/β-TrCP recognition and proteasomal degradation, thereby setting circadian clock speed. |
Genetic epistasis in Drosophila, in vitro kinase assay, phosphorylation site mapping, mutant analysis |
Cell |
High |
21514639
|
| 2011 |
LIT-1 (C. elegans NLK ortholog) acts within glia to promote sensory compartment expansion in a Wnt-independent manner. LIT-1 localizes to the glial sensory compartment via its conserved C-terminus, which binds both actin and the Wnt-Aldrich syndrome protein (WASP) by two-hybrid and Co-IP. LIT-1 C-terminus localization requires neuronal signals and is necessary for its function. |
Genetic suppressor screen, electron microscopy reconstruction, yeast two-hybrid, Co-IP, fluorescence microscopy, fluorescence EM |
PLoS biology |
High |
21857800
|
| 2012 |
NLK (Nlk2 in zebrafish) positively regulates Wnt/β-catenin signaling by phosphorylating LEF1, which causes LEF1 dissociation from HDAC, enabling transcriptional activation. NLK functions downstream of Dishevelled (Dvl) in Wnt/β-catenin signaling in neural progenitor cells. |
Zebrafish morpholino knockdown, epistasis analysis, in vitro kinase assay, Co-IP, reporter assay |
The EMBO journal |
High |
22373574
|
| 2015 |
NLK phosphorylates Raptor at Ser863, disrupting its interaction with Rag GTPase, which is required for mTORC1 lysosomal recruitment. This inhibits mTORC1 lysosomal localization and suppresses mTORC1 activation in response to osmotic and oxidative stress. Cells with Nlk deletion or Raptor S863 phosphorylation-site knock-in are defective in rapid mTORC1 inhibition upon osmotic stress. |
In vitro kinase assay, phosphorylation site mutagenesis, Co-IP, lysosomal fractionation, Nlk knockout and knock-in mouse cells, mTORC1 activity assay |
Genes & development |
High |
26588989
|
| 2016 |
NLK phosphorylates YAP at Ser128 (both in vitro and in vivo), blocking YAP interaction with 14-3-3 and enhancing YAP nuclear localization and transcriptional activity. This is distinct from LATS-mediated Ser127 phosphorylation. Depletion of NLK increases YAP pSer127 and reduces YAP reporter activity. In Drosophila, Nemo knockdown reduces Yorkie target gene expression. |
In vitro kinase assay, co-immunoprecipitation, nuclear fractionation, luciferase reporter assay, Drosophila genetics |
EMBO reports |
High |
27979971 27979972
|
| 2016 |
Osmotic stress activates NLK to phosphorylate YAP at Ser128, interfering with 14-3-3 binding even when YAP Ser127 is phosphorylated, resulting in YAP nuclear accumulation and induction of target gene expression, enhancing cellular stress adaptation. |
In vitro kinase assay, phosphorylation assay, nuclear/cytoplasmic fractionation, target gene expression analysis, reporter assay |
EMBO reports |
High |
27979971
|
| 2016 |
NLK phosphorylates HDAC1 at Serine 421 (kinase-inactive NLK fails to do so), and this phosphorylation negatively regulates Wnt signaling. NLK-deficient primary embryonic fibroblasts show sustained β-catenin/Lef1 interaction and elevated Wnt reporter activity. |
In vitro kinase assay, catalytically inactive mutant, NLK-knockout mouse cells, luciferase reporter, Co-IP |
Molecular biology of the cell |
High |
27903773
|
| 2019 |
NLK interacts with MAVS on mitochondria and peroxisomes and phosphorylates MAVS at multiple sites, inducing MAVS degradation and subsequent inactivation of IRF3, thereby inhibiting antiviral innate immune responses. NLK depletion promotes virus-induced antiviral cytokine production and decreases viral replication in vitro and in vivo. |
Co-IP, in vitro kinase/phosphorylation assay, NLK knockdown/reconstitution, mouse viral infection model, IRF3 activation assay |
Nature communications |
High |
31324787
|
| 2014 |
NLK interacts with the IKK-associated complex and disrupts the TAK1-IKKβ interaction, thereby inhibiting IKKβ phosphorylation and blocking TNFα-induced NF-κB activation, p65 nuclear localization, and IκBα degradation. |
Co-IP, overexpression, NLK genetic inactivation, NF-κB reporter assay, IKKβ phosphorylation assay |
Biochimica et biophysica acta |
Medium |
24721172
|
| 2011 |
ZIPK (zipper-interacting protein kinase) is a novel NLK-binding partner; ZIPK regulates NLK-mediated repression of canonical Wnt/β-catenin signaling and affects the NLK-TCF4 complex formation. ZIPK siRNA reduces Wnt/β-catenin signaling and cell growth. |
Co-IP, siRNA knockdown, luciferase reporter assay |
The Journal of biological chemistry |
Medium |
21454679
|
| 2009 |
NLK interacts with SMAD4 (identified by yeast two-hybrid, confirmed by Co-IP in vitro and in vivo) and phosphorylates SMAD4 at Thr9 and Ser138 within the MH1 domain in vitro, via the linker sequence of SMAD4. |
Yeast two-hybrid, Co-IP, in vitro kinase assay, phosphorylation site mapping |
Molecular and cellular biochemistry |
Medium |
19690946
|
| 2017 |
The phosphatase WIP1 directly interacts with NLK and dephosphorylates its activation site, thereby inhibiting NLK kinase activity. WIP1-mediated inhibition of NLK markedly decreases LEF1 phosphorylation, enhancing LEF1 interaction with β-catenin and increasing Wnt activity during germ cell development. |
Co-IP, in vitro phosphatase assay, NLK kinase activity assay, LEF1 phosphorylation assay, WIP1 knockout mouse embryonic stem cells |
Biochimica et biophysica acta. Molecular basis of disease |
Medium |
28185954
|
| 2018 |
NLK interacts with the E2F1 complex and promotes disassembly of the E2F1/HDAC1 complex, diminishing HDAC1's ability to repress E2F1 target genes and boosting cell cycle progression. NLK-deficient colorectal tumor cells show G1/S arrest and reduced E2F1 target gene expression; wild-type but not kinase-mutant NLK restores the phenotype. |
Co-IP, NLK deletion, RNA-seq, reporter assay, kinase-mutant rescue experiment |
Cancer letters |
Medium |
29803790
|
| 2022 |
NLK phosphorylates SRF at serine residues 101/103, enhancing the SRF-ELK association and antagonizing the SRF/MKL pathway, thereby inhibiting myoblast differentiation in vitro. Skeletal muscle-specific Nlk conditional knockout mice show hypertrophic muscle growth with increased muscle and body mass, confirming NLK's role in modulating muscle development in vivo. |
In vitro kinase assay, phosphorylation site mutagenesis, Co-IP, Nlk conditional knockout mouse model, muscle phenotype analysis |
Cell death discovery |
High |
35013153
|
| 2019 |
NLK interacts with STAT3 and inhibits CCL2 expression by regulating STAT3 phosphorylation and O-GlcNAcylation, thereby inhibiting macrophage recruitment in the tumor microenvironment. |
Co-IP, reporter assay, macrophage co-culture assay |
Journal of experimental & clinical cancer research : CR |
Low |
38008713
|
| 2016 |
NLK interacts with the transcription factor STAT1 in cardiomyocytes; NLK transgenic mice show increased STAT1 levels and develop cardiac hypertrophy, fibrosis, and heart failure, while cardiac-specific Nlk deletion protects from cardiac dysfunction. NLK expression is induced by pathological cardiac stimuli. |
Cardiac-specific transgenic mice, cardiac-specific Nlk knockout (loxP/Cre), Co-IP, cardiac functional assays |
PloS one |
Medium |
27764156
|
| 2012 |
NLK is synthetically lethal with PTEN deficiency; this lethality is mediated through FOXO1 (a proposed NLK substrate), as FOXO1 knockdown reverses the selectivity of NLK silencing for PTEN-deficient cells. NLK-depleted PTEN-deficient cells undergo senescence. |
High-throughput RNAi screen, isogenic PTEN-deficient cell models, FOXO1 knockdown rescue, senescence assay |
PloS one |
Medium |
23144700
|
| 2020 |
NLK interacts with 14-3-3ζ (YWHAZ) and prevents its dimerization; this interaction restores E-cadherin expression suppressed by 14-3-3ζ. A non-dissociable 14-3-3ζ dimer cannot be disrupted by NLK, confirming that NLK acts by preventing 14-3-3ζ dimerization. |
Co-IP, overexpression, 14-3-3ζ fusion dimer experiment, migration assay, western blot |
Oncology reports |
Medium |
32236580
|
| 2002 |
Xenopus NLK (xNLK) interacts with xSox11 in mammalian cells; kinase-inactive xNLK suppresses xSox11-induced neural marker gene expression. xNLK induces the anterior-neural marker Otx-2 and cooperates with xSox11 in neural induction. |
Co-IP in mammalian cells, dominant-negative kinase mutant, Xenopus embryo injection, neural marker gene expression assay |
Genes to cells : devoted to molecular & cellular mechanisms |
Medium |
12047350
|
| 2025 |
USP14 (a deubiquitinase) interacts with NLK and facilitates its deubiquitination, thereby stabilizing NLK activity. This USP14-NLK interaction suppresses Wnt/β-catenin signaling and concurrently activates the NF-κB pathway in macrophages. |
Co-IP, USP14 overexpression/knockdown, deubiquitination assay, NF-κB reporter assay, Wnt reporter assay |
Cytokine |
Medium |
41353967
|
| 2026 |
NLK associates with the N-terminal death effector domains (DEDs, amino acids 1–216) of Caspase-8 and enhances Caspase-8 recruitment and proximity-induced activation within FADD-RIPK1/3-containing PANoptosome complexes. NLK deletion impairs Caspase-8 cleavage and promotes RIPK1-RIPK3 necrosome assembly, redirecting cell death towards necroptosis in macrophages during sepsis. |
Co-IP, Nlk conditional knockout mice (Csf1r-iCre), LPS-stimulated bone-marrow-derived macrophages, Caspase-8 cleavage assay, Caspase-8 overexpression rescue, mouse sepsis model |
Clinical and translational medicine |
Medium |
41674095
|
| 2025 |
NLK promotes mislocalization of TDP43 and other RNA-binding proteins by disrupting nuclear import. NLK levels are elevated in neurons exhibiting TDP43 mislocalization in ALS patient tissues, and genetic reduction of NLK reduces toxicity in human neuron models of ALS. |
Human ALS patient tissue analysis, human neuron ALS models, genetic NLK reduction, TDP43 localization assay |
bioRxivpreprint |
Low |
bio_10.1101_2025.01.27.635090
|
| 2010 |
NLK forms a complex with the histone H3-K9 methyltransferase SETDB1 and suppresses PPARγ action in mesenchymal cells. NLK suppresses osteoblastic differentiation markers (ALP, type I collagen, runx2, osterix, osteocalcin) in a kinase-activity-dependent manner; kinase-inactive NLK fails to suppress differentiation. NLK also suppresses Runx2-driven osteocalcin promoter activity. |
Retrovirus-mediated overexpression, kinase-inactive NLK mutant, siRNA knockdown, alkaline phosphatase assay, bone marker gene expression, luciferase reporter assay |
Experimental cell research |
Medium |
20116374
|