| 1995 |
BMK1/MAPK7 (ERK5) was identified as a new human MAP kinase of 816 amino acids with the dual phosphorylation TEY motif characteristic of MAP kinases, but with a distinct C-terminal domain and loop-12 structure compared to other mammalian MAP kinases, suggesting it regulates signaling events distinct from the ERK group. |
cDNA cloning, primary structure analysis |
Biochemical and biophysical research communications |
High |
7646528
|
| 1998 |
EGF activates BMK1/ERK5 independently of Ras through the MAP kinase kinase MEK5, and expression of a dominant-negative BMK1 blocks EGF-induced cell proliferation and S-phase entry, establishing BMK1 as part of a distinct MAP kinase signaling pathway required for EGF-induced cell proliferation. |
Dominant-negative overexpression, kinase activity assays, cell cycle analysis |
Nature |
High |
9790194
|
| 2000 |
ERK5 was isolated in a yeast two-hybrid screen using the MADS-MEF2 domain of MEF2D as bait; the C-terminal region of ERK5 contains both a MEF2-interacting domain and a potent transcriptional activation domain required for coactivation of MEF2D, revealing ERK5 as a MAP kinase with intrinsic transcriptional activation capability. |
Yeast two-hybrid, domain deletion analysis, luciferase reporter assays, endogenous gene activation |
Molecular and cellular biology |
High |
11046135
|
| 2001 |
During retrograde neurotrophin signaling, endocytosed Trk receptors activate the ERK5 pathway, leading to nuclear translocation of ERK5, phosphorylation of CREB, and enhanced neuronal survival; ERK1/2 does not transmit this retrograde signal, establishing a unique function for ERK5 in retrograde signaling. |
Dominant-negative ERK5 expression, compartmentalized neuron culture, nuclear translocation imaging, CREB phosphorylation assay, survival assay |
Nature neuroscience |
High |
11544482
|
| 2001 |
EGF-induced activation of MKK5 and ERK5 occurs subsequent to activation of ERK1 and ERK2 in HeLa cells, and the ERK1/2 cascade negatively controls the MKK5/ERK5 pathway; ERK5 is not a significant activator of MAPK-activated protein kinase-1/RSK in HeLa cells. |
Phospho-specific antibodies, MEK inhibitor dose-response (U0126, PD184352), kinase activity assays |
FEBS letters |
Medium |
11478941
|
| 2002 |
Erk5 knockout mice die around E9.5–10.5 with defective blood vessel and cardiac development; endothelial cells lining the developing myocardium display disorganized, rounded morphology, and blood vessel investment with smooth muscle cells is attenuated, establishing an essential role for Erk5 in cardiovascular development and angiogenesis. |
Gene knockout in mice, histological and morphological analysis |
Proceedings of the National Academy of Sciences of the United States of America |
High |
12093914
|
| 2003 |
ERK5 knockout mice die at approximately E10.5 with increased apoptosis in cephalic mesenchyme, vascular remodeling defects, cardiac development abnormalities, and placental defects, confirming that ERK5 is essential for early embryonic development and normal vascular system development. |
Gene targeting/knockout in mice, in situ hybridization, apoptosis analysis |
BMC developmental biology |
High |
14675480
|
| 2003 |
WNK1 activates ERK5 through an MEKK2/3-dependent mechanism: WNK1 co-immunoprecipitates with MEKK2 and MEKK3, phosphorylates both in vitro, and WNK1-driven ERK5 activation is blocked by dominant-negative MEKK2/3 or MEK5; siRNA knockdown of WNK1 attenuates EGF-induced ERK5 activation, placing WNK1 upstream of MEKK2/3 in the ERK5 pathway. |
Co-immunoprecipitation, dominant-negative overexpression, in vitro kinase assay, siRNA knockdown |
The Journal of biological chemistry |
High |
14681216
|
| 2003 |
Activation of the MEK5-ERK5 pathway causes phosphorylation and stabilization of c-Fos and Fra-1, with the C-terminal half of ERK5 required for maximal transactivation activity of c-Fos and Fra-1; ERK5-mediated phosphorylation of c-Fos occurs at sites distinct from those targeted by ERK1/2. |
Constitutively active MEK5 expression, phosphorylation mapping, reporter assays |
Genes to cells : devoted to molecular & cellular mechanisms |
Medium |
12622723
|
| 2003 |
The full-length MEK5α splice variant, but not MEK5β, activates BMK1/ERK5 and induces nuclear translocation; MEK5β acts as a dominant negative by binding BMK1 and preventing MEK5α association with BMK1, revealing splice variant-dependent control of ERK5 activation. |
Co-immunoprecipitation, dominant-negative and constitutively active constructs, MEF2 reporter assays, kinase activation assays |
The Journal of biological chemistry |
High |
14583600
|
| 2004 |
Conditional ablation of BMK1 in adult mice leads to lethality within 2–4 weeks, blood vessel leakage, endothelial cell rounding and apoptosis; in vitro BMK1 removal causes endothelial cell death partly through deregulation of MEF2C, a direct substrate of BMK1; endothelial-specific but not cardiomyocyte-specific deletion recapitulates cardiovascular defects. |
Mx1-Cre inducible conditional knockout, histology, endothelial cell culture, MEF2C substrate assay |
The Journal of clinical investigation |
High |
15085193
|
| 2001 |
BMK1/ERK5 is activated via tyrosine 1062 of the RET tyrosine kinase upon GDNF stimulation or MEN2A mutation; this activation requires downstream MEK5 signaling (blocked by dominant-negative MEK5), but not RAS or PI3K pathways; activated BMK1 in turn activates the MEF2C transcription factor. |
Tyrosine-to-phenylalanine mutagenesis (Y1062F), kinase activity assays, MEK1/PI3K inhibitors, dominant-negative MEK5, MEF2C luciferase reporter |
Biochemical and biophysical research communications |
Medium |
11237712
|
| 2005 |
ERK5 drives LKLF (lung Krüppel-like factor) transcription by activating MEF2 transcription factors through its kinase and transcriptional activation domains; gene profile analysis of erk5-/- embryos and fibroblasts reconstituted with ERK5 or truncated ERK5(1-740, lacking transactivation domain) identified LKLF, flt1, and bnip3 as ERK5 target genes. |
Gene expression profiling (microarray) in knockout vs. reconstituted cells, shRNA/dominant-negative MEK5, ChIP-like transcription factor assays |
Molecular and cellular biology |
High |
16166637
|
| 2005 |
The MEK5-ERK5 pathway is required for neural differentiation in Xenopus embryos: morpholino knockdown of ERK5 or MEK5 reduces head structure and inhibits neural differentiation, while forced activation of MEK5-ERK5 is sufficient to induce neural differentiation; the pathway acts downstream of SoxD and upstream of the proneural gene Xngnr1. |
Morpholino antisense knockdown, constitutively active MEK5 expression, epistasis analysis in Xenopus embryos |
EMBO reports |
High |
16179948
|
| 2006 |
ERK5 binds to and phosphorylates p90 RSK: ERK5 co-immunoprecipitates with RSK from cell extracts, binds RSK in vitro, and phosphorylates RSK to activate it; the common docking (CD) domain of ERK5 and the D domain of RSK are important for their association; activation of ERK5 weakens its binding to RSK. |
Co-immunoprecipitation, in vitro binding assay, in vitro kinase assay, domain mutagenesis |
Archives of biochemistry and biophysics |
High |
16626623
|
| 2007 |
ERK5 activation by PDGF-BB in hepatic stellate cells is Src-dependent; ERK5 silencing inhibits PDGF-BB-induced cell proliferation and c-Jun expression/activation, while ERK5 depletion increases cell migration associated with redistribution of focal contacts and decreased phosphorylation of FAK, paxillin, and PAK. |
siRNA knockdown, Src inhibitor, migration/proliferation assays, phosphorylation analysis |
Journal of hepatology |
Medium |
17998143
|
| 2007 |
ERK5 is activated at G2-M and required for timely mitotic entry; ERK5 activates NF-κB through RSK2-mediated phosphorylation and degradation of IκB; NF-κB inhibition at G2-M delays mitotic entry and reduces cyclin B1, cyclin B2, Plk-1, and cdc25B transcription; constitutive ERK5 activation-induced mitosis is blocked by NF-κB inhibition. |
Cell cycle synchronization, kinase assays, reporter assays, dominant-negative and constitutively active constructs, gene expression analysis |
The Journal of cell biology |
High |
17452529
|
| 2008 |
MEK5-ERK5 pathway mediates fluid shear stress inhibition of TNF-α-induced JNK activation in endothelial cells; selective MEK5 inhibitor BIX02188 completely reversed flow inhibition of TNF-mediated JNK activation, while ERK1/2-selective inhibitor PD184352 had no effect, placing MEK5-ERK5 as the key mediator of atheroprotective flow signaling. |
Pharmacological inhibitors (BIX02188, PD184352), shear stress apparatus, JNK activity assay, NF-κB reporter |
Biochemical and biophysical research communications |
Medium |
18358237
|
| 2008 |
EGF-induced ERK5 activation controls Slug expression in keratinocytes; ectopic Erk5 activation increases Slug mRNA and accelerates wound healing; Erk5 shRNA knockdown reduces keratinocyte motility, Slug induction, and disrupts desmosome organization, establishing an EGFR/Erk5/Slug pathway controlling cytoskeleton organization and cell motility. |
Erk5 shRNA knockdown, constitutively active Erk5 expression, wound healing assay, migration assay, desmosome analysis |
Molecular biology of the cell |
Medium |
18716062
|
| 2008 |
MEK5-ERK5 pathway regulates apoptosis of developing thymocytes but has no function in positive selection; ERK5 activity correlates with levels of Nur77 family members but not Bim, distinguishing the ERK5 apoptosis pathway from ERK1/2 in T-cell development. |
Retroviral expression of dominant-negative and constitutively active MEK5, thymocyte apoptosis assays, Nur77/Bim expression analysis |
The EMBO journal |
High |
18548009
|
| 2009 |
Constitutive activation of MEK5/ERK5 signaling inhibits endothelial cell migration and increases focal contact area; this is associated with reduced expression of p130Cas, a key player in directed cell migration, and altered actin organization, demonstrating ERK5 controls endothelial cell migration and morphology. |
Retroviral gene transfer (constitutively active MEK5), migration assays, focal contact measurement, actin imaging, p130Cas expression analysis |
The Journal of biological chemistry |
Medium |
19605361
|
| 2010 |
ERK5 is phosphorylated during mitosis at multiple sites in its C-terminal region by CDK1 (not MEK5); CDK1 co-precipitates with ERK5 in mitotic cells; CDK1 inhibitor RO3306 reverses mitotic ERK5 phosphorylation; this CDK1-dependent phosphorylation inhibits ERK5 activity and regulates its nucleo-cytoplasmic shuttling. |
Co-immunoprecipitation, CDK1 inhibitor, phosphorylation site mutagenesis, nuclear/cytoplasmic fractionation |
Journal of cell science |
High |
20736311
|
| 2010 |
ERK5 phosphorylation during mitosis occurs at its C-terminal half (not at the TEY activation motif) and is CDK-dependent rather than MEK5-dependent; five mitotic phosphorylation sites were identified; mutagenesis showed these phosphorylations inhibit ERK5 activity and regulate ERK5 nuclear-cytoplasmic shuttling. |
Mass spectrometry phosphorylation site identification, mutagenesis, CDK inhibitors, fractionation assays |
Cellular signalling |
High |
20667468
|
| 2010 |
BMK1/ERK5 interacts with promyelocytic leukemia protein (PML) and inhibits its tumor-suppressor function through phosphorylation; activated BMK1 inhibits PML-dependent p21 activation; a small-molecule inhibitor XMD8-92 was developed that blocks BMK1 kinase activity and suppresses tumor growth in vivo by 95%. |
Co-immunoprecipitation, in vitro phosphorylation assay, p21 reporter assay, xenograft tumor model, pharmacological inhibition |
Cancer cell |
High |
20832753
|
| 2013 |
X-ray crystal structure of the human ERK5 kinase domain in complex with a selective benzo[e]pyrimido[5,4-b]diazepine-6(11H)-one inhibitor was determined; the structure reveals specific residue differences in the ATP-binding site compared to related ERKs, p38s, and JNKs that allow development of ERK5-specific inhibitors. |
X-ray crystallography |
Journal of medicinal chemistry |
High |
23656407
|
| 2013 |
ERK5 is degraded through the ubiquitin-proteasome system in a process mediated by the tumor suppressor VHL through a prolyl hydroxylation-dependent mechanism; VHL-negative cell lines have elevated ERK5, and ERK5 knockdown in these cells decreases proliferation and migration. |
Transfection assays, endogenous ERK5 analysis in VHL-positive and -negative cell lines, proteasome inhibitor experiments, siRNA knockdown |
Neoplasia (New York, N.Y.) |
Medium |
23730213
|
| 2014 |
XIAP directly interacts with MEKK2/3 and competes with PB1 domain-mediated binding to MEK5; XIAP and cIAP1 conjugate predominantly K63-linked ubiquitin chains to MEKK2 and MEKK3, directly impeding MEK5-ERK5 interaction in a trimeric complex and leading to ERK5 inactivation; loss of XIAP or cIAP1 leads to hyperactivation of ERK5. |
Co-immunoprecipitation, ubiquitination assays, domain competition assays, ubiquitin chain linkage analysis, skeletal myoblast differentiation assay |
The EMBO journal |
High |
24975362
|
| 2014 |
ERK5 activation in macrophages promotes efferocytosis; macrophage-specific ERK5-null mice exhibit reduced efferocytosis and accelerated atherosclerotic plaque formation when crossed with LDL receptor-/- mice on a high-cholesterol diet; statins robustly activate ERK5 in macrophages. |
Macrophage-specific conditional ERK5 knockout, efferocytosis assays, atherosclerosis model (LDLR-/- mice), pharmacological ERK5 activation |
Circulation |
High |
25001623
|
| 2014 |
IFN-γ-mediated induction of LRRK2 in macrophages is suppressed by pharmacological inhibition and RNA interference of ERK5, establishing ERK5 as a required mediator of the IFN-γ signaling pathway inducing LRRK2 expression. |
ERK5 pharmacological inhibition, siRNA knockdown, LRRK2 immunostaining, differentiation of THP-1 cells and primary monocytes |
Journal of neurochemistry |
Medium |
24479685
|
| 2016 |
Genetic deletion of ERK1/2 in intestinal epithelial cells results in supraphysiological ERK5 pathway activity; combined pharmacological targeting of MEK1/2 and MEK5 is more effective than single treatment in suppressing proliferation in intestinal organoids and colorectal cancer lines, demonstrating ERK5 provides a bypass proliferative route when ERK1/2 is abrogated. |
Conditional ERK1/2 knockout mice, MEK1/2 and MEK5/ERK5 pharmacological inhibitors, intestinal organoid culture, CRC cell lines |
Nature communications |
High |
27187615
|
| 2016 |
Selective ERK5 kinase inhibitors have no antiinflammatory or antiproliferative activity, whereas less selective inhibitors block both ERK5 and BET bromodomains; the source of efficacy of previously reported ERK5 inhibitors is off-target activity on bromodomains; phenotypes from genetic deletion of ERK5 likely arise from removal of a noncatalytic function. |
Synthesis of selective ERK5 inhibitors, bromodomain selectivity profiling (KINOMEscan, BROMOscan), cell proliferation and inflammation assays |
Proceedings of the National Academy of Sciences of the United States of America |
High |
27679845
|
| 2016 |
ERK5 maintains embryonic stem cells in the naive pluripotent state and suppresses progression toward primed pluripotency and neuroectoderm differentiation; ERK5 also inhibits a cardiomyocyte-specific differentiation program; these functions were dissected from BRD4 functions using CRISPR/Cas9 ERK5 knockout and compound selectivity engineering. |
CRISPR/Cas9 knockout, selective ERK5 inhibitor/BET inhibitor comparison, pluripotency state assays, differentiation assays |
Cell reports |
High |
27498864
|
| 2017 |
YAP promotes myogenic differentiation through the MEK5-ERK5 pathway; YAP activates the Abl/Src/MEKK3/MEK5/ERK5 kinase cascade; co-immunoprecipitation showed YAP interacts with MEKK3 and ERK5; MEKK3 PPGY motif (aa 178-181) mediates interaction with YAP, and Y181F mutation inhibits MEK5/ERK5 activation and myogenesis. |
Co-immunoprecipitation, site-directed mutagenesis, constitutive expression, kinase activation assays, myogenic differentiation assays |
FASEB journal : official publication of the Federation of American Societies for Experimental Biology |
Medium |
28356344
|
| 2018 |
Mitochondrial complex I activity induces ERK5 expression through fumarate accumulation; ERK5 in turn induces MEF2-dependent NRF2 expression, activating the antioxidant response; blocking OXPHOS decreases Erk5 and Nrf2 expression in vivo, establishing an OXPHOS-fumarate-ERK5-MEF2-NRF2 axis for antioxidant response. |
OXPHOS inhibition, fumarate supplementation, MEF2/NRF2 reporter assays, fibroblasts from mitochondrial disorder patients, mouse model |
Scientific reports |
Medium |
29743487
|
| 2018 |
IFN-γ receptor stimulation activates ULK1, which interacts with and phosphorylates MLK3, leading to downstream ERK5 activation; this ULK1-MLK3-ERK5 axis is required for transcription of antiviral IFN-stimulated genes (ISGs) and IFN-γ-dependent antiviral effects, independent of autophagy. |
Kinase interaction assays, phosphorylation analysis, antiviral assays, gene expression analysis, pathway inhibition |
Science signaling |
Medium |
30459284
|
| 2019 |
Resistance to ERK1/2 inhibitor SCH772984 in BRAFV600E melanoma cells involves stimulation of the IGF1R-MEK5-ERK5 signaling pathway, which counteracts Erk1/2 inhibition; IGF1R inhibitor linsitinib blocked Erk5 activation in resistant cells, establishing this axis as a resistance bypass route. |
ERKi-resistant cell line generation, pathway analysis, IGF1R inhibitor treatment, 3D spheroid assays, xenograft models |
Cancer research |
Medium |
30833419
|
| 2020 |
Small molecule ERK5 kinase inhibitors paradoxically activate ERK5 transcriptional transactivation domain activity by stimulating nuclear localization of ERK5; this kinase domain occupancy-driven nuclear translocation activates the C-terminal transactivation domain independently of kinase activity. |
ERK5 kinase and transcriptional reporter assays, nuclear localization imaging, selective ERK5 inhibitor panel |
Biochemical Society transactions |
High |
32915196
|
| 2022 |
Mechanosensitive channel PIEZO1 senses shear force and activates CaMKII, which interacts with and activates MEKK3, promoting MEKK3/MEK5/ERK5 signaling and ultimately inducing KLF2/4 transcription in endothelial cells; endothelial-specific Piezo1 deletion reduces KLF2/4 expression in vivo. |
Endothelial-specific Piezo1 knockout mice, co-immunoprecipitation (CaMKII-MEKK3), calcium imaging, shear stress experiments, KLF2/4 expression analysis |
Cells |
Medium |
35883633
|
| 2023 |
ERK5 S496 phosphorylation mediates both senescence-associated secretory phenotype (SASP) and senescence-associated stemness by upregulating AHR in macrophages; S496 phosphorylation induces NRF2 SUMOylation at K518 to inhibit NRF2 transcriptional activity without altering ERK5 catalytic activity; ERK5 S496A knock-in mice are protected from atherosclerosis. |
CRISPR/Cas9 knock-in (ERK5 S496A), imaging mass cytometry, bone marrow-derived macrophage isolation, RNA-seq, NRF2 SUMOylation assays, atherosclerosis model |
Circulation research |
High |
37264926
|
| 2012 |
BMK1 signaling suppresses epithelial-mesenchymal transition (EMT): BMK1 elevation augments E-cadherin-mediated cell-cell adhesion and reduces mesenchymal markers; BMK1 depletion promotes Snail nuclear accumulation through Akt/GSK3β signaling activated by increased DEPTOR expression (mTOR inhibitor); BMK1 depletion promotes metastasis in vivo. |
BMK1 overexpression and siRNA knockdown, EMT marker analysis, nuclear/cytoplasmic fractionation, DEPTOR modulation, in vivo metastasis model |
Cancer research |
Medium |
22282661
|
| 2017 |
Dichloroacetate (DCA) increases ERK5 expression through fumarate accumulation (OXPHOS induction), which activates the transcription factor MEF2 to drive LDLR transcription and LDL intake; pharmacological or genetic inhibition of the ERK5/MEF2 pathway decreases LDLR expression and LDL uptake. |
DCA treatment, genetic/pharmacological ERK5/MEF2 inhibition, LDLR luciferase reporter, H3K27 acetylation ChIP, primary hepatocytes, mouse models |
Scientific reports |
Medium |
28878225
|
| 2020 |
ERK5 inhibition or silencing in endometrial cancer impairs NF-κB pathway by downregulating NEMO/IKKγ expression, leading to impaired p65/RELA activity and apoptosis; overexpression of NEMO/IKKγ rescues this apoptosis, placing ERK5 upstream of NEMO in an ERK5-NEMO-NF-κB survival pathway. |
ERK5 siRNA/pharmacological inhibition, MEK5 genetic deletion, NEMO rescue overexpression, xenograft model, NF-κB reporter, correlation in human EC tumor samples |
Cellular and molecular life sciences : CMLS |
Medium |
36123565
|
| 2021 |
ERK5 inhibition induces p21-mediated cellular senescence in melanoma: genetic and pharmacological ERK5 blockade increases senescence-associated β-galactosidase activity, p21 expression, and SASP cytokines (CXCL1, CXCL8, CCL20); knockdown of p21 suppresses ERK5 inhibition-induced senescence, identifying p21 as the key mediator; confirmed in vivo in melanoma xenografts. |
ERK5 shRNA knockdown, XMD8-92 pharmacological inhibition, transcriptomic analysis, senescence assays (β-galactosidase), p21 siRNA rescue, xenograft model |
Cancer research |
High |
34799355
|
| 2020 |
MEK5/ERK5 inhibition in macrophages reduces IL-4-induced M2 differentiation (Arg-1, Ym-1, Fizz-1 expression) independently of STAT3/STAT6 phosphorylation, but through decreased c-Myc expression; myeloid-specific Erk5 conditional knockout (LysMcre/Erk5f/f) confirms ERK5 requirement for IL-4-induced M2 polarization. |
MEK5/ERK5 pharmacological inhibition, myeloid-specific conditional ERK5 knockout, M2 marker analysis, STAT3/STAT6 phosphorylation, c-Myc expression analysis |
Journal of leukocyte biology |
High |
32745297
|