| 1998 |
MKP-3/DUSP6 is catalytically activated by direct binding to ERK2; this activation requires the noncatalytic N-terminus of MKP-3 and is independent of ERK2 kinase activity. The gain-of-function Sevenmaker ERK2 mutant D319N does not bind or activate MKP-3, and JNK/SAPK or p38 do not bind or activate MKP-3. |
In vitro binding assay with purified proteins; enzymatic activity assays; mutant ERK2 analysis |
Science |
High |
9596579
|
| 1996 |
Pyst1/DUSP6 is a cytoplasmic dual-specificity phosphatase that selectively dephosphorylates and inactivates ERK (MAP kinase) but has very low activity toward JNK/SAPK or p38 in vitro and in vivo; it forms a physical complex with endogenous MAP kinase in cells. |
In vitro phosphatase assay; co-immunoprecipitation of endogenous MAP kinase; transfection in COS-1 cells; subcellular fractionation/localization |
The EMBO Journal |
High |
8670865
|
| 1996 |
MKP-3/DUSP6 is a cytosolic protein (excluded from the nucleus) that suppresses ERK2 phosphorylation and enzymatic activation by mitogens when expressed in COS-7 cells. |
Epitope-tagged subcellular localization in sympathetic neurons; COS-7 cell transfection; ERK2 phosphorylation assay |
The Journal of Biological Chemistry |
High |
8626780
|
| 1999 |
Crystal structure of the Pyst1/DUSP6 catalytic domain (2.35 Å) reveals a PTPase fold with shallow active site and distorted geometry; ERK2 binding induces closure of the Asp262 loop over the active site, switching DUSP6 from a low- to high-activity form. Mutation of Asp262 abolishes catalysis only in the ERK2-stimulated (high-activity) conformation. |
X-ray crystallography; kinetic analysis with pNPP substrate; site-directed mutagenesis (D262); in vitro ERK2-dependent activation assay |
Nature Structural Biology |
High |
10048930
|
| 2005 |
ERK2 phosphorylates DUSP6/MKP-3 on serines 159 and 197, promoting its proteasomal degradation; this constitutes a positive feedback by which ERK1/2 enhance their own signaling by degrading their primary cytosolic inactivator. Phosphorylation at these sites does not affect DUSP6 catalytic activity. |
In vitro ERK2 phosphorylation of GST-MKP-3 fusion proteins; tetracycline-inducible cell clones with single and double serine mutants; proteasome inhibitor experiments; half-life measurements |
Molecular and Cellular Biology |
High |
15632084
|
| 2008 |
DUSP6/MKP-3 is transcriptionally induced by FGF signaling via an ERK1/2-dependent mechanism; transcriptional activation requires a conserved Ets-factor binding site in the DUSP6 promoter, and the Ets2 protein (a known ERK target) binds to the endogenous DUSP6 promoter. |
Pharmacological inhibitors of ERK pathway; murine DUSP6 promoter-EGFP reporter in chicken neural plate; ChIP for Ets2 at endogenous DUSP6 promoter; site-directed mutation of Ets-binding site |
The Biochemical Journal |
High |
18321244
|
| 2007 |
DUSP6 specifically binds ERK1/2 (in yeast two-hybrid and human cells) but fails to bind ERK5; recombinant ERK2 induces catalytic activation of DUSP6 but ERK5 cannot; ectopic DUSP6 dephosphorylates ERK2 but not ERK5; DUSP6 blocks MEK1-driven ERK1/2 signaling but not MEK5-driven ERK5 signaling. |
Yeast two-hybrid; co-immunoprecipitation; in vitro catalytic activation assay; cotransfection dephosphorylation assay; GAL4-ELK1 and GAL4-MEF2D transcription reporter assays |
Cellular Signalling |
High |
18280112
|
| 2008 |
Dusp6 knockout mice show increased basal ERK1/2 phosphorylation in heart, spleen, kidney, brain, and fibroblasts, but no change in ERK5, p38, or JNK activation; loss of Dusp6 leads to larger hearts with greater myocyte proliferation during embryonic/early postnatal development, cardiac hypercellularity, protection against hypertrophic cardiomyopathy, and reduced apoptosis in MEFs. |
Targeted gene disruption (knockout mouse); immunoblotting for phospho-ERK1/2 in multiple tissues; cardiac histology; flow cytometry for proliferation and apoptosis; pressure overload and MI models |
The Journal of Biological Chemistry |
High |
18753132
|
| 2008 |
The PI3K/mTOR pathway contributes to DUSP6 phosphorylation and proteasomal degradation induced by growth factors; serine 159 within DUSP6 is identified as the specific mTOR pathway target; a basal MEK activity is required for the mTOR-mediated phosphorylation to occur. |
Pharmacological inhibitors of PI3K and mTOR; mTOR-specific agonists (amino acids, insulin/IGF-1); site-directed mutagenesis of S159; inducible cell expression system |
Oncogene |
High |
18223677
|
| 2009 |
BCI [(E)-2-benzylidene-3-(cyclohexylamino)-2,3-dihydro-1H-inden-1-one] is an allosteric inhibitor of Dusp6 that inhibits catalytic activation of Dusp6 by ERK2 substrate binding; docking simulations predict an allosteric binding site within the phosphatase domain; in vivo, BCI blocks Dusp6 activity and enhances FGF target gene expression in zebrafish embryos. |
Transgenic zebrafish chemical screen; docking simulations; in vitro Dusp6 activity assay; FGF target gene expression analysis in zebrafish |
Nature Chemical Biology |
High |
19578332
|
| 2012 |
miR-181a directly represses DUSP6 expression; age-associated decline in miR-181a increases DUSP6 protein levels in naive CD4+ T cells, causing defective TCR-induced ERK phosphorylation; reconstitution of miR-181a or siRNA knockdown of DUSP6 improved T cell activation, proliferation, and TH1 differentiation. |
miR-181a reconstitution in elderly T cells; DUSP6 siRNA knockdown; allosteric DUSP6 inhibitor (BCI); flow cytometry for activation markers; proliferation assays |
Nature Medicine |
High |
23023500
|
| 2011 |
mRNA stability of DUSP6 is regulated post-transcriptionally by MEK/ERK signaling in a 3'UTR-dependent manner; Tristetraprolin (TTP) and PUM2 reduce DUSP6 mRNA levels via the 3'UTR; hypoxia increases DUSP6 mRNA stability in a HIF-1-dependent and basal ERK activity-requiring manner. |
Luciferase reporter with DUSP6 3'UTR; mRNA half-life measurement with cycloheximide; MEK inhibitors; hypoxia/HIF-1 manipulation; TTP and PUM2 overexpression |
Journal of Cellular Physiology |
High |
20665674
|
| 2012 |
Caspase-3 cleaves DUSP6/MKP3 at the interdomain linker region during apoptosis, generating N-terminal and C-terminal fragments with differential abilities to regulate ERK1/2 nuclear/cytosolic localization and activity; full-length MKP3 protein levels decrease upon apoptotic stimulation in a caspase-dependent manner. |
Caspase-3 cleavage assay in vitro and in cells; analysis of MKP3 fragments by immunoblot; ERK1/2 subcellular localization by fractionation/imaging; apoptotic stimulation |
Journal of Molecular Biology |
High |
22504224
|
| 2013 |
DUSP6 interacts with progesterone receptor B (PR-B) via a common docking (CD) domain in PR-B; this interaction enables CK2-dependent phosphorylation of PR-B on Ser81, required for formation of a PR-B/DUSP6/CK2 transcriptional complex at the Wnt1 enhancer and STAT5A gene; DUSP6 acts as a scaffold (not as a phosphatase) in this context. |
Binding studies (pulldown); CD domain mutation of PR-B; co-IP; ChIP at Wnt1 enhancer; transcriptional reporter assays; JAK/STAT inhibition |
Nucleic Acids Research |
High |
23921636
|
| 2020 |
DUSP6 dephosphorylates Drp1-S616 (independently of its known substrates ERK1/2), keeping Drp1-S616 phosphorylation low under normal conditions; DUSP6 is SUMOylated at K234 by SUMO1/2/3, and this SUMOylation stabilizes DUSP6. During oxidative stress, SENP1 is upregulated, causing deSUMOylation and proteasomal degradation of DUSP6, leading to Drp1-S616 hyperphosphorylation, mitochondrial fragmentation, and apoptosis; SUMOylation-deficient DUSP6-K234R mutant fails to protect cells. |
In vitro dephosphorylation assay (Drp1-S616 as substrate); co-IP; site-directed mutagenesis (K234R); SENP1 manipulation; mitochondrial fragmentation imaging; apoptosis assays; in vivo brain ischemia/reperfusion model |
Science Advances |
High |
32232156
|
| 2018 |
PKN2 phosphorylates and activates DUSP6 through direct association; activated DUSP6 then suppresses ERK1/2 phosphorylation, inhibiting CREB/Elk-1-driven expression of IL-4 and IL-10 in colon cancer cells, thereby suppressing M2 macrophage polarization. |
Co-IP; kinase activity assay for PKN2; DUSP6 catalytic activity assay; ChIP-qPCR; siRNA knockdown; in vivo xenograft model |
Molecular Cancer |
High |
29368606
|
| 2018 |
DUSP6 regulates TCR signaling to influence T cell metabolism: DUSP6-knockout T cells show enhanced JNK and p38 phosphorylation but impaired glycolysis; DUSP6 is necessary for phosphofructokinase induction and metabolic commitment to glycolysis upon CD28 co-stimulation; DUSP6 restrains TFH cell differentiation by inhibiting IL-21 production through a fatty acid oxidation-linked mechanism. |
DUSP6 knockout mice; DUSP6-/-OTII transgenic mice; in vitro T cell differentiation assays; JNK/p38 inhibitors; metabolic flux analysis; immunization experiments |
PNAS |
High |
30087184
|
| 2020 |
CIC (transcriptional repressor) directly represses DUSP6 transcription by binding three cis-regulatory elements (CREs) in the DUSP6 promoter; p90RSK (a downstream ERK1/2 target) phosphorylates CIC at S173 and S301, creating a 14-3-3 recognition motif that drives nuclear export of CIC and derepresses DUSP6 transcription, completing an ERK1/2/p90RSK/CIC/DUSP6 negative feedback circuit. |
ChIP for CIC at DUSP6 CREs; promoter reporter assays; CIC phosphorylation assay; 14-3-3 interaction assay; CIC nuclear/cytoplasmic localization assay; CIC-DUX4 fusion analysis |
iScience |
High |
33103082
|
| 2021 |
Dual inactivation of DUSP4 and DUSP6 selectively impairs growth in NRAS- and BRAF-mutant cancer cells through hyperactivation of MAPK signaling; cells resistant to MAPK pathway therapeutics become cross-sensitized to DUSP4/DUSP6 dual perturbation. |
CRISPR paralog knockout library screen across cancer cell lines; genetic epistasis with MAPK pathway mutations; drug resistance combination experiments |
Nature Genetics |
High |
34857952
|
| 2022 |
DUSP6 is transcriptionally activated by p38-C/EBPβ signaling in neutrophils and acts as an effector maintaining p-p38 activity by downregulating pERK and the p38-targeting phosphatases DUSP1/DUSP16; Dusp6-deficient neutrophils cause less myocardial damage post-MI, improving cardiac outcomes. |
Rat Dusp6 nonsense mutation model; neutrophil-cardiomyocyte co-culture; bone marrow transplantation; neutrophil-specific DUSP6 KO mice; mechanistic signaling analysis |
Nature Communications |
High |
36335128
|
| 2022 |
Ectopic DUSP6 expression mediates JAK2-inhibitor resistance; DUSP6 inhibits S6 and JAK-STAT signaling and reduces inflammatory cytokine production; DUSP6 perturbation inhibits RSK1, identified as a co-dependent candidate; pharmacological DUSP6 targeting suppresses disease in Jak2V617F and MPLW515L MPN mouse models. |
Single-cell RNA sequencing; DUSP6 ectopic expression in PDX models; pharmacological DUSP6 inhibition; MPN mouse models; RSK1 co-dependence analysis |
Nature Cancer |
High |
36581736
|
| 2021 |
Loss of the ubiquitin ligase FBXO31 stabilizes DUSP6, suppressing ERK signaling and activating PI3K-AKT signaling cascade; CRL1FBXO31 promotes ubiquitylation-mediated degradation of DUSP6; in prostate cancer, this axis drives tumor development reversible by BCI (DUSP6 inhibitor) which suppresses AKT activation. |
Co-IP; ubiquitylation assay; FBXO31 depletion stabilizing DUSP6; orthotopic mouse prostate cancer model; BCI treatment; AKT/ERK signaling analysis |
Cell Reports |
High |
34686346
|
| 2000 |
Nitric oxide (NO) down-regulates MKP-3/DUSP6 by destabilizing its mRNA, reducing protein levels; this protects ERK1/2 from TNFα-induced dephosphorylation in endothelial cells, preventing Bcl-2 proteolysis and apoptosis; NO has no effect on DUSP6 catalytic activity, indicating the regulation is exclusively at the mRNA level. |
NO donor treatment; MKP-3 mRNA stability assay; MKP-3 overexpression; phosphatase activity assay; Bcl-2/cytochrome c immunoblotting |
The Journal of Biological Chemistry |
High |
10846176
|
| 2003 |
Adenovirus-mediated reintroduction of DUSP6/MKP-3 into pancreatic cancer cells reduces phosphorylated ERK in a dose-dependent manner and suppresses cell growth; exogenous DUSP6 expression induces apoptosis as shown by flow cytometry. |
Adenovirus-mediated gene reintroduction; immunoblotting for p-ERK; cell growth assay; flow cytometry and immunocytochemistry for apoptosis |
The American Journal of Pathology |
High |
12759238
|
| 2014 |
MKP-3/DUSP6 interacts with FOXO1 (residues 200-260 of MKP-3 bind residues 360-456 of FOXO1); MKP-3 phosphatase activity is not required for this interaction but is essential for FOXO1 nuclear translocation and MKP-3-promoted gluconeogenesis (G6Pase gene expression); ERK phosphorylation-deficient FOXO1 mutant loses interaction with MKP-3. |
Mutant adenoviral constructs for MKP-3 and FOXO1; co-IP; G6Pase reporter; glucose output assay; in vivo liver rescue experiments |
Diabetes (via earlier PLOS ONE mapping paper 2012) |
High |
22848439 24722245
|
| 2021 |
DUSP6 deficiency in the colon enhances epithelial barrier integrity and alters glucose metabolism (increased mitochondrial oxygen consumption, decreased glycolysis) in Caco-2 cells; Dusp6-KO mice resist DSS-induced dysbiosis and colitis, with transferable protection via fecal microbiota transplantation. |
DUSP6 CRISPR mutation in Caco-2 cells; Dusp6-KO mice; DSS colitis model; metabolic flux analysis; co-housing and fecal microbiota transplantation; culturomics and mono-colonization |
Cell Reports |
High |
34818535
|
| 2011 |
DUSP6 is up-regulated in oligodendrocytes upon AMPA receptor activation; blocking DUSP6 expression enhances ERK1/2 phosphorylation and significantly reduces AMPA receptor-induced oligodendrocyte death; DUSP6 overexpression increases AMPA receptor-induced inward currents and calcium overload, suggesting DUSP6 regulates glutamate receptor permeability. |
Microarray and qPCR in oligodendrocyte cultures and optic nerves; DUSP6 knockdown; ERK phosphorylation assay; electrophysiology (AMPA-induced currents); calcium imaging; cytochrome c/mitochondrial depolarization assays |
The Journal of Biological Chemistry |
High |
21300799
|
| 2012 |
Ischemia/reperfusion induces endothelial MKP-3/DUSP6 expression, which inactivates ERK1/2 and impairs eNOS expression and NO production; siRNA knockdown of MKP-3 restores eNOS and NO; MKP-3-mediated ERK inactivation promotes HDAC1 recruitment to the eNOS promoter, causing histone deacetylation and eNOS repression. |
HUVECs I/R model; siRNA knockdown; constitutively active ERK plasmid transfection; HDAC inhibitor; ChIP for HDAC1 at eNOS promoter; NO measurement |
PLoS One |
High |
22848708
|
| 2013 |
DUSP6 depletion activates CHEK2 and p38, and elevates phospho-H2AX, ATM, and CHEK2, identifying DUSP6 as a regulator of the DNA damage response (DDR) pathway; DUSP6 depletion reduces cancer cell viability and increases sensitivity to EGFR inhibitors and cytotoxic agents in vitro and in xenografts. |
siRNA and shRNA knockdown; phosphoproteomic analysis; DDR marker immunoblotting (γH2AX, p-ATM, p-CHEK2); xenograft mouse model; viability assays |
British Journal of Cancer |
High |
23839489
|
| 2021 |
DUSP6 inhibition (BCI or genetic) radiosensitizes primary and relapse GBM cells by inhibiting recruitment of phosphorylated DNAPKcs (PRKDC) to DSBs, subsequently reducing γH2AX and 53BP1 recruitment, thus impairing DNA repair; nuclear localization of DUSP6 found in primary and recurrent GBM biopsies and cell lines. |
BCI pharmacological inhibition; genetic DUSP6 inhibition; clonogenic survival assays; DNAPKcs/γH2AX/53BP1 foci analysis; orthotopic mouse GBM model; direct localization (nuclear vs. cytoplasmic) in patient samples |
Journal of Cell Science |
High |
34792128
|
| 2019 |
TRIM7 ubiquitinates DUSP6 and promotes its polyubiquitination and proteasomal degradation, thereby activating p38 signaling and promoting HCC cell proliferation; DUSP6 overexpression abolishes the TRIM7-driven p38 activation and proliferation. |
Co-IP; ubiquitylation assay; TRIM7 and DUSP6 overexpression/knockdown; p38 activity assay; SB203580 p38 inhibitor rescue |
Biochemical and Biophysical Research Communications |
Medium |
30850165
|
| 2021 |
TRIM65 ubiquitinates DUSP6, promoting ERK1/2 activation; C-myc induced by ERK1/2 then activates TRIM65 transcription via its promoter, forming a positive feedback loop in endometrial stromal cells; DUSP6 overexpression reverses TRIM65-driven ERK1/2/C-myc activation and invasion. |
Co-IP; ubiquitylation assay; dual luciferase; ChIP for C-myc at TRIM65 promoter; Transwell invasion assay; in vivo endometriosis mouse model |
The Journal of Clinical Endocrinology and Metabolism |
Medium |
33146694
|
| 2021 |
NKX2-1 transcription factor induces DUSP6 expression to suppress ERK activity in lung adenocarcinoma; DUSP6 is necessary for NKX2-1-mediated inhibition of tumor progression in vivo; DUSP6 expression is sufficient to inhibit RAS-driven LUAD. |
NKX2-1 re-introduction in NKX2-1-silenced LUAD cells; DUSP6 genetic manipulation; xenograft and genetic mouse models; ERK activity assays |
Oncogene |
High |
34689179
|
| 2021 |
DUSP6 deficiency enhances osteoclastogenesis prevention via ERK2 and SMAD2 signaling; DUSP6 directly dephosphorylates SMAD2, modulating NFATC1 nuclear translocation to regulate osteoclast differentiation; miR-181a is an upstream regulator of DUSP6 in this context. |
DUSP6 overexpression/siRNA knockdown; ERK2-deficient bone marrow macrophages; immunoprecipitation confirming DUSP6 direct modification of SMAD2 phosphorylation; NFATC1 nuclear localization assay; in vivo BCI treatment |
Cell Death & Disease |
Medium |
34475393
|
| 2024 |
DUSP6 is a positive regulator of HER3 expression; its impact on HER2 inhibitor tolerance is mediated by the neuregulin-HER3 axis; DUSP6 overexpression confers apoptosis resistance in HER2+ breast cancer and its pharmacological blockade prevents therapy tolerance development; DUSP6 targeting synergizes with HER2i combination therapies in vivo. |
Transcriptional profiling of drug-tolerant cells; DUSP6 overexpression/genetic targeting; neuregulin-HER3 pathway analysis; in vivo brain metastasis model; pharmacological DUSP6 inhibition |
EMBO Molecular Medicine |
High |
38886591
|
| 2022 |
DUSP6 interacts with JNK (as shown by enhanced DUSP6-JNK interaction upon lncRNA TCONS_00145741 knockdown), and this interaction reduces JNK phosphorylation, shifting microglia toward M2 differentiation; lncRNA TCONS_00145741 impairs this interaction to promote M1 microglia polarization. |
RNA pull-down; RNA immunoprecipitation; RNA FISH + immunofluorescence; immunoblot for JNK phosphorylation; flow cytometry for M1/M2 markers; in vivo ICH model |
Frontiers in Cell and Developmental Biology |
Medium |
35127692
|
| 2019 |
Dusp6 attenuates Ras/MAPK (ERK) signaling during zebrafish heart regeneration; suppressing Dusp6 by BCI or gene inactivation increases cardiomyocyte proliferation, coronary angiogenesis, and reduces fibrosis after ventricular resection; in rat primary cardiomyocytes, NRG1-stimulated proliferation is enhanced by DUSP6 chemical inhibition. |
Zebrafish dusp6 mutants; BCI chemical inhibition; ventricular resection model; cardiomyocyte proliferation assay; coronary angiogenesis imaging; rat primary cardiomyocyte NRG1 stimulation |
Development |
High |
29444893
|
| 2019 |
The Met62Ile substitution in DUSP6 from DBA/2J mice reduces the interaction between DUSP6 and ERK, resulting in increased ERK phosphorylation and ERK activity; myoblasts expressing Met62Ile DUSP6 are insensitive to BCI-induced proliferation, while canonical DUSP6-expressing myoblasts show enhanced proliferation with BCI. |
Whole-genome and RNA sequencing; Co-IP/interaction assay; ERK phosphorylation measurement; BCI sensitivity assay in myoblasts |
Human Molecular Genetics |
Medium |
30289454
|
| 2014 |
MEF2D functions as a p38MAPK-dependent transcriptional repressor of DUSP6 in skeletal myoblasts; MEF2A/D heterodimer has divergent roles in regulating DUSP6 in cardiac versus skeletal myogenic lineages, as identified by ChIP-exo and MEF2A siRNA depletion. |
ChIP-exo in cardiomyocytes and myoblasts; RNA-seq in MEF2A-depleted cells; MEF2A/D siRNA; p38MAPK inhibition |
Nucleic Acids Research |
Medium |
25217591
|
| 2008 |
Feedback regulation of DUSP6 transcription by MAPK1/ERK2 via ETS2: the DUSP6 intron 1 has promoter activity dependent on ERK activity and a consensus ETS transcription factor binding site; ETS2 specifically associates with the intron 1 region, linking MAPK1 activity to DUSP6 transcription. |
Luciferase promoter activity assay; MEK/ERK inhibitors; ETS2 binding site mutagenesis; ChIP for ETS2 at DUSP6 intron 1 |
Biochemical and Biophysical Research Communications |
High |
18848526
|
| 2012 |
MEK/ERK pathway mediates insulin-promoted degradation of MKP-3/DUSP6 protein in liver cells; MEK inhibitor slows MKP-3 protein degradation; double serine mutation (S159/S197) renders MKP-3 resistant to insulin- and constitutively active MEK-induced degradation; reduced MKP-3 stability (via ERK activation) decreases G6Pase expression and glucose output. |
Cycloheximide chase assay; MEK inhibitor; constitutively active MEK; serine-to-alanine mutagenesis; G6Pase mRNA and glucose output assay |
Molecular and Cellular Endocrinology |
High |
22521266
|