| 2001 |
MKP6 (DUSP14) was identified as a CD28 cytoplasmic tail-interacting protein via yeast-hybrid technology, and functions as a negative-feedback regulator of CD28 costimulatory signaling by inactivating MAP kinases; dominant-negative MKP6 enhanced IL-2 secretion specifically in response to CD28 costimulation, and a CD28 cytoplasmic tail mutant unable to bind MKP6 costimulated larger quantities of IL-2. |
Yeast-hybrid cloning, retroviral dominant-negative transfer into primary human T cells, IL-2 secretion assay, MAP kinase activation measurement |
Journal of immunology |
Medium |
11123293
|
| 2009 |
DUSP14 phosphatase activity is selectively inhibited by PTP inhibitor IV (bis(4-trifluoromethyl-sulfonamidophenyl)-1,4-diisopropylbenzene) in a competitive manner, indicating that PTP inhibitor IV binds to the catalytic site of DUSP14; DUSP14 was shown to directly dephosphorylate JNK in vitro. |
In vitro phosphatase activity screen, kinetic competitive inhibition assay, in vitro DUSP14-mediated JNK dephosphorylation assay |
Biochemical and biophysical research communications |
High |
19646420
|
| 2009 |
A fluorescent ESIPT probe was designed by phosphorylation of the HBT chromophore and shown to be selectively hydrolyzed by DUSP14 (MKP-6) phosphatase activity, demonstrating the enzymatic activity of DUSP14 toward a phosphorylated substrate. |
In vitro fluorescent probe enzymatic hydrolysis assay (ESIPT-based) |
Chemical communications |
Medium |
19787133
|
| 2012 |
DUSP14 negatively regulates TNF- and IL-1-induced NF-κB activation by directly interacting with TAK1 and dephosphorylating TAK1 at Thr-187 (a residue in the activation loop critical for TAK1 activation); overexpression of phosphatase-dead DUSP14 mutant failed to inhibit NF-κB activation, confirming catalytic activity is required. |
Co-immunoprecipitation, overexpression and knockdown (siRNA), Western blot for TAK1 phosphorylation, NF-κB reporter assay, phosphatase-deficient mutant analysis |
The Journal of biological chemistry |
High |
23229544
|
| 2014 |
DUSP14 negatively regulates TCR signaling by directly interacting with TAB1 (TAK1-binding protein 1) and dephosphorylating TAB1 at Ser438, leading to inactivation of the TAB1-TAK1 complex and reduced downstream JNK and IKK activation; DUSP14-deficient mice showed enhanced T cell proliferation, cytokine production, and susceptibility to EAE. |
DUSP14-knockout mouse generation, co-immunoprecipitation, in vitro dephosphorylation assay, TAB1 shRNA knockdown epistasis, EAE disease model |
Journal of immunology |
High |
24403530
|
| 2015 |
DUSP14 is modified by TRAF2-mediated Lys63-linked ubiquitination at lysine 103, and this ubiquitination is required for DUSP14 phosphatase activity during TCR signaling; TRAF2 shRNA knockdown reduced DUSP14 ubiquitination and phosphatase activity. |
Mass spectrometry identification of ubiquitination site, mutational analysis (K103 mutation), co-immunoprecipitation of TRAF2-DUSP14, TRAF2 shRNA knockdown, phosphatase activity assay |
Cellular signalling |
High |
26521044
|
| 2017 |
DUSP14 physically interacts with TAK1 and suppresses NF-κB and MAPK (JNK) signaling in hepatocytes; hepatocyte-specific DUSP14 knockout exacerbated hepatic ischemia-reperfusion injury while DUSP14 transgenic mice were protected; mutant DUSP14 unable to bind TAK1 failed to protect against hepatic I/R injury; TAK1 inhibition abolished DUSP14 function in vivo, placing DUSP14 upstream of TAK1 in this pathway. |
Hepatocyte-specific KO and TG mouse models, co-immunoprecipitation, pull-down assays, Western blot, TAK1 inhibitor epistasis, TAK1-binding mutant DUSP14 |
Journal of hepatology |
High |
28887166
|
| 2018 |
PRMT5 methylates DUSP14 at arginine residues 17, 38, and 45; this arginine methylation is required for subsequent TRAF2-mediated Lys63-linked ubiquitination and phosphatase activity of DUSP14 during TCR signaling, establishing a sequential PTM cascade (methylation→ubiquitination→activation). DUSP14 directly interacts with TAB1 but not TAK1. |
Proximity ligation assay, co-immunoprecipitation, in vitro methylation assay (PRMT5), triple-methylation mutant analysis, PRMT5 shRNA knockdown, phosphatase activity assay |
FASEB journal |
High |
29920217
|
| 2018 |
DUSP14 directly binds to and dephosphorylates TAK1 in hepatocytes, reducing activation of TAK1 downstream signaling including JNK1, p38, and NF-κB; both the binding domain and phosphatase activity of DUSP14 are required for protection against hepatic steatosis in NAFLD models; disruption of the DUSP14-TAK1 interaction abolished DUSP14's mitigative effects. |
Hepatocyte-specific overexpression (HTG) and KO (HKO) mouse models, co-immunoprecipitation, binding-domain and phosphatase-dead mutants, high-fat diet NAFLD model, TAK1 inhibitor rescue |
Hepatology |
High |
29077210
|
| 2007 |
DUSP14 knockdown or expression of dominant-negative DUSP14 in beta-cells increased beta-cell line proliferation and enhanced GLP-1-induced proliferation of primary beta-cells, identifying DUSP14 as a negative regulator of the MAPK/ERK1/2 pathway that limits GLP-1-induced beta-cell proliferation. |
siRNA knockdown, dominant-negative expression, [3H]thymidine and BrdU incorporation proliferation assays in beta-cell lines and primary mouse islets |
Diabetes |
Medium |
18025410
|
| 2007 |
DUSP14 (as NSF) was identified by MALDI-TOF mass spectrometry as a ~22.5 kDa protein secreted by macrophage-like suppressor cells that exists as a dimer under non-reducing conditions; recombinant DUSP14 exhibited phosphatase activity toward p-nitrophenyl phosphate and suppressed delayed-type hypersensitivity by binding specifically to MHC class II (Ia)-positive dendritic cells. |
MALDI-TOF mass spectrometry protein identification, recombinant DUSP14 in vitro phosphatase assay, binding assay to MHC class II+ cells, anti-DUSP14 monoclonal antibody neutralization, DTH/CHS functional assays |
The British journal of dermatology |
Medium |
17263825
|
| 2018 |
DUSP14 knockout in mice increased NF-κB and MAPK (p38, ERK1/2, JNK) activation following cardiac ischemia-reperfusion injury; ROS scavenger N-acetylcysteine abolished the DUSP14-knockdown-augmented NF-κB and MAPK activation in cardiomyocytes, indicating DUSP14 suppresses these pathways via reducing ROS generation. |
DUSP14 knockout mouse, DUSP14 siRNA knockdown in primary cardiomyocytes, Western blot for MAPK/NF-κB, ROS measurement, N-acetylcysteine rescue experiment |
Biochemical and biophysical research communications |
Medium |
29660332
|
| 2018 |
DUSP14 axon growth inhibition in retinal ganglion cells operates downstream of KLF9 transcription factor; decreasing Dusp14 expression (siRNA/shRNA) or pharmacological inhibition (PTP inhibitor IV) increased axon growth in vitro and promoted RGC survival and optic nerve regeneration in vivo, linking the KLF9-Dusp14 axis to suppression of MAPK-dependent neurotrophic signaling. |
KLF9 overexpression + microarray to identify downstream targets, siRNA/shRNA knockdown of Dusp14, PTP inhibitor IV pharmacological inhibition, in vitro neurite length assay, in vivo optic nerve crush model in rats and mice |
Investigative ophthalmology & visual science |
Medium |
29860460
|
| 2024 |
JUNI lncRNA physically interacts with DUSP14 protein and counteracts its phosphatase activity, thereby facilitating JNK phosphorylation and c-Jun induction under UV/genotoxic stress; depletion of JUNI reduced JNK phosphorylation and cell survival, and this effect was mediated through JUNI's antagonism of DUSP14. |
Protein-RNA interaction screen (57 JUNI-interacting proteins identified), JNK phosphorylation Western blot, JUNI depletion functional rescue, UV/genotoxic drug treatment |
Oncogene |
Medium |
38565943
|
| 2025 |
DUSP14 dephosphorylates MLKL (mixed lineage kinase domain-like protein), thereby inhibiting necroptosis in cardiomyocytes; cardiomyocyte-specific DUSP14 overexpression reduced MLKL phosphorylation and necroptosis in hypothyroid mice, while DUSP14 knockout exacerbated necroptosis and cardiac dysfunction; a small-molecule activator (P077-0472) of DUSP14 inhibited cardiomyocyte necroptosis. |
DUSP14 KO mouse and AAV-mediated cardiomyocyte-specific overexpression, MLKL phosphorylation Western blot, Evans blue staining, LDH measurement, molecular docking for small-molecule activator, in vitro pharmacological activation assay |
Circulation |
High |
40357546
|
| 2025 |
DUSP14 knockdown increased phosphorylation of PTPN12, thereby inhibiting PPARα transcriptional activity and downregulating SCD expression; this led to lipid peroxidation and ferroptotic cell death in triple-negative breast cancer cells; targeting the DUSP14-PTPN12-PPARα/SCD axis with a small-molecule drug restricted TNBC malignant phenotype. |
DUSP14 knockdown (in vitro and xenograft), PTPN12 phosphorylation Western blot, PPARα transcriptional activity assay, SCD expression measurement, lipid peroxidation assay, xenograft tumor model, small-molecule drug treatment |
Cell reports |
Medium |
41032417
|
| 2025 |
DUSP14 interacts with TAK1 in bronchial epithelial cells (confirmed by co-immunoprecipitation) and DUSP14 overexpression restrains TAK1 and downstream NF-κB pathway activation, alleviating airway inflammation and mucus hypersecretion in an OVA asthma model. |
Co-immunoprecipitation of DUSP14-TAK1, DUSP14 overexpression in vitro (BEAS-2B cells) and OVA mouse model, Western blot for NF-κB/TAK1, inflammatory cytokine measurement |
Immunology letters |
Medium |
40449853
|
| 2019 |
DUSP14 overexpression inhibited osteoclast differentiation induced by M-CSF and RANKL in bone marrow-derived cells and activated AMPKα; AMPKα blockade abolished the anti-osteoclast effect of DUSP14, placing DUSP14 upstream of AMPKα in suppression of osteoclastogenesis; DUSP14 transgenic mice were protected from magnesium silicate-induced inflammatory osteoporosis. |
DUSP14 overexpression in bone marrow-derived cells, M-CSF/RANKL osteoclast differentiation assay, AMPKα inhibitor epistasis, DUSP14 TG mouse model |
Biochemical and biophysical research communications |
Medium |
31526569
|
| 2021 |
DUSP14 elevation in chondrocytes increased AMPK phosphorylation and inhibited NF-κB signaling (increased IκB, decreased p-p65); AMPK blockade abolished the protective effect of DUSP14 overexpression against IL-1β-induced inflammatory injury, establishing DUSP14 as acting upstream of AMPK-IκB to restrain NF-κB. |
DUSP14 overexpression in IL-1β-stimulated chondrocytes, AMPK inhibitor epistasis, Western blot for AMPK/NF-κB pathway, ACLT-induced OA rat model with DUSP14 injection, histological evaluation |
Bioengineered |
Medium |
34605731
|
| 2026 |
DUSP14 protein level in colon cancer cells is inversely correlated with total TAK1 protein, and DUSP14 was functionally validated as a pharmacological target using cell lines and patient-derived organoids. |
RNA-sequencing, Western blot correlation of DUSP14 and TAK1 levels, in vitro cell line and patient-derived organoid drug targeting assays |
International journal of cancer |
Low |
41922912
|