| 2011 |
Crystal and solution structures of murine DAPK2 revealed that DAPK2 forms dimers through apposed catalytic domains in an autoinhibited conformation that precludes protein substrate binding; the 'basic loop' fingerprint of the DAPK family plays a central role in kinase domain dimerization, and two distinct active-site conformations are observed upon nucleotide binding. |
X-ray crystallography and solution scattering (SAXS) of recombinant murine DAPK2 with and without nucleotide ligands |
Journal of molecular biology |
High |
21497605
|
| 2014 |
DAPK2 directly interacts with and phosphorylates components of mTORC1; co-immunoprecipitation showed DAPK2 associates with mTOR, raptor, and ULK1, recombinant protein-binding assay confirmed direct DAPK2–raptor interaction, and in vitro kinase assay showed DAPK2 phosphorylates raptor at Ser721. DAPK2 knockdown increased mTORC1 kinase activity and reduced autophagy induced by amino acid deprivation or elevated intracellular Ca²⁺. |
Co-immunoprecipitation, recombinant protein-binding assay, in vitro kinase assay, siRNA knockdown with mTORC1 substrate phosphorylation readout |
Cell death and differentiation |
High |
25361081
|
| 2018 |
AMPK phosphorylates DAPK2 at a site between the catalytic and calmodulin-binding domains (Ser289), activating DAPK2 by functionally mimicking calmodulin binding and mitigating inhibitory autophosphorylation. Activated DAPK2 in turn phosphorylates Beclin-1, causing dissociation of its inhibitor Bcl-XL and promoting autophagy; DAPK2 depletion reduced autophagy in response to AMPK activation. |
In vitro kinase assays, phosphosite mapping, co-immunoprecipitation, siRNA knockdown, autophagy flux assays |
Nature communications |
High |
29717115
|
| 2021 |
14-3-3 proteins bind DAPK2 via a canonical mode III motif created by phosphorylation of Thr369 at the DAPK2 C-terminus. X-ray crystallographic analysis of the full-length human DAPK2:14-3-3 complex showed that 14-3-3 binding stabilizes DAPK2 dimers, protects the inhibitory autophosphorylation site Ser318 from dephosphorylation, and prevents Ca²⁺/CaM binding, thereby inactivating DAPK2. The interaction is further enhanced by the diterpene glycoside Fusicoccin A. |
X-ray crystallography, biophysical binding assays (ITC, SAXS), phosphosite mapping, mutagenesis |
Communications biology |
High |
34413451
|
| 2019 |
Ser289 phosphorylation enhances DAPK2 catalytic activity (analogous to its effect on DAPK1); AMPK-mediated Ser289 phosphorylation of DAPK2 was compared to RSK-mediated phosphorylation of DAPK1 in the same cells, and the signaling pathways leading to Ser289 phosphorylation are mutually exclusive between DAPK1 and DAPK2. |
In-cell kinase activity assays, phospho-specific immunoblotting, pathway inhibitor treatments |
Cell cycle |
Medium |
31116076
|
| 2009 |
DAPK2 promoter hypermethylation silences DAPK2 expression in Hodgkin lymphoma cell lines; a constitutively active calmodulin-deletion mutant of DAPK2 fused to CD30 ligand (immunokinase DAPK2'-CD30L) selectively induced apoptosis and inhibited proliferation in CD30-positive/DAPK2-negative tumor cells, demonstrating that restoration of DAPK2 catalytic activity is sufficient for pro-apoptotic function. |
Promoter methylation analysis, recombinant fusion protein construction, cell viability and apoptosis assays in tumor cell lines |
Journal of immunotherapy |
Medium |
19609235
|
| 2013 |
DAPK2 positively regulates motility of human neutrophils and eosinophils in response to intermediary chemoattractants; pharmacological inhibition of DAPK activity abolished granulocyte migration associated with reduced MLC phosphorylation and loss of cell polarization with radial F-actin, and reduced neutrophil recruitment to the peritoneum in a mouse peritonitis model. |
Pharmacological DAPK inhibition, ex vivo chemotaxis assays, F-actin/MLC phosphorylation analysis, in vivo peritonitis model |
Journal of leukocyte biology |
Medium |
24163421
|
| 2013 |
DAPK2 expression is transcriptionally activated by the myeloid transcription factors PU.1 and C/EBPα during granulocytic differentiation; PML-RARα binds the DAPK2 promoter and represses its transcription in APL. Restoration of DAPK2 expression in PU.1-knockdown APL cells partially rescued neutrophil differentiation, establishing DAPK2 as a relevant PU.1 downstream effector. |
ChIP (PML-RARA and PU.1 binding at DAPK2 promoter), ectopic expression, PU.1 knockdown, differentiation assays |
Journal of leukocyte biology |
Medium |
24038216
|
| 2008 |
E2F1 and KLF6 transcriptionally activate the DAPK2 promoter via a GC-rich region upstream of exon 1 in an Sp1-dependent manner (no canonical E2F binding sites); ChIP confirmed Sp1 recruitment (and lesser E2F1/KLF6 recruitment) to the DAPK2 promoter. DAPK2 induction mediates the pro-apoptotic effects of both E2F1 and KLF6, as DAPK2 knockdown significantly reduced cell death upon activation of either transcription factor. |
Promoter reporter assays, chromatin immunoprecipitation (ChIP), Sp1-deficient insect cells, mithramycin A treatment, siRNA knockdown, cell death assays |
Oncogene |
Medium |
18521079
|
| 2014 |
Genetic ablation of DAPK2 by RNAi causes NF-κB phosphorylation and transcriptional activation, leading to upregulation of DR4 and DR5 (TRAIL receptors) on the cell surface and sensitizing resistant cancer cells to TRAIL-induced apoptosis in a p53-independent manner. |
siRNA knockdown, NF-κB reporter assay, cell surface flow cytometry for DR4/DR5, TRAIL apoptosis assays in multiple cancer cell lines |
Cell death and differentiation |
Medium |
25012503
|
| 2015 |
Adenoviral DAPK2 overexpression in 3T3-L1 adipocytes increased autophagic clearance in nutrient-rich conditions in a kinase activity-dependent manner; conversely, siRNA-mediated DAPK2 inhibition in human preadipocytes decreased LC3-II accumulation rates measured with lysosome inhibitors, demonstrating DAPK2 kinase activity is required for autophagic flux in adipocytes. |
Adenoviral overexpression (kinase-active and kinase-dead), siRNA knockdown, LC3-II accumulation assay with lysosome inhibitors in 3T3-L1 and human preadipocytes |
Diabetes |
Medium |
26038578
|
| 2016 |
DAPK2 transcriptional activation by thyroid hormone (TH) enhances phosphorylation of SQSTM1/p62, promoting selective autophagic clearance of protein aggregates; ectopic DAPK2 expression attenuated DEN-induced hepatotoxicity and DNA damage via enhanced autophagy, while DAPK2 knockdown had the opposite effect. |
Adeno-associated virus knockdown, ectopic DAPK2 expression, phospho-SQSTM1 immunoblot, autophagy flux assays, murine hepatocarcinogenesis model |
Autophagy |
Medium |
27653365
|
| 2017 |
TAp73 isoform binds to and activates the DAPK2 promoter, whereas ΔNp73 inhibits DAPK2 transcription; DAPK2 is an important downstream effector of p73 in ATO-induced apoptosis. Conversely, the p73-DAPK2 pathway is essential for ATRA-induced autophagy mediated by a direct interaction between DAPK2 and ATG5. DAPK2 also binds and stabilizes p73 protein, forming a positive feedback loop. |
Promoter reporter assay (TAp73/ΔNp73), siRNA knockdown of TP73 and DAPK2, co-immunoprecipitation of DAPK2-ATG5, apoptosis and autophagy assays in APL cells |
Journal of leukocyte biology |
Medium |
28978663
|
| 2015 |
RNA interference-mediated depletion of endogenous DAPK2 in cancer cells causes decreased oxidative phosphorylation, destabilized mitochondrial membrane potential, increased mitochondrial superoxide anion production, and activation of ERK, JNK, and p38 stress kinases; overexpression of a kinase-dead DAPK2 mutant further enhanced oxidative stress, indicating that DAPK2 kinase activity is required to maintain mitochondrial integrity. |
siRNA knockdown, kinase-dead mutant overexpression, Seahorse metabolic flux analysis, mitochondrial membrane potential assay, superoxide detection, stress kinase immunoblotting |
Cell death & disease |
Medium |
25741596
|
| 2021 |
Cigarette smoking-induced METTL3-mediated m6A modification of DAPK2 mRNA is read by YTHDF2, resulting in decreased DAPK2 mRNA stability and reduced DAPK2 expression; downregulation of DAPK2 activates NF-κB signaling to promote NSCLC proliferation and migration. |
m6A sequencing/MeRIP, METTL3/YTHDF2 knockdown, mRNA stability assay, NF-κB pathway inhibitor (BAY 11-7085), in vitro and in vivo functional assays |
Cancer letters |
Medium |
34298122
|
| 2025 |
DAPK2 dysfunction alters Mic60 (mitofilin) protein in mitochondrial cristae by promoting its lactylation, increasing cristae abundance and compactness and activating mitochondrial metabolism, leading to anoikis resistance and enhanced metastasis in EGFR-TKI-resistant lung cancer cells. |
Mass spectrometry, immunoprecipitation, anoikis-resistant cell model, mouse tail vein metastasis model, Mic60 lactylation analysis, mitochondrial metabolic assays |
Developmental cell |
Medium |
40812308
|
| 2026 |
DAPK2 directly phosphorylates PKM2 at threonine 45, causing PKM2 dimerization and nuclear translocation; nuclear PKM2 activates VCAM-1 and ICAM-1 expression by interacting with STAT1, promoting endothelial inflammation in response to oscillatory shear stress. KLF2 suppresses DAPK2 transcription, and OSS-induced KLF2 downregulation leads to DAPK2 upregulation. EC-specific Dapk2 deficiency reduced atherogenesis in Apoe-/- mice, and Pkm2T45A overexpression mitigated disturbed flow-induced atherogenesis. |
Mass spectrometry phosphosite identification, immunoprecipitation, proximity ligation assay, dominant-negative DAPK2 mutant, EC-specific Dapk2 knockout in Apoe-/- mice (carotid ligation and Western diet models), Pkm2T45A and Pkm2T45E knock-in overexpression mice |
Circulation |
High |
41614276
|
| 2019 |
PCB118 enhances binding between Tubb3 (tubulin beta 3) and DAPK2 in thyroid cells; siRNA knockdown of Tubb3 suppressed DAPK2 protein expression and PKD phosphorylation, while DAPK2 (downstream of Tubb3) activated PKD which in turn phosphorylated VPS34, mediating autophagy. DAPK2 overexpression following PCB118 exposure upregulated PKD and VPS34 in the DAPK2/PKD/VPS34 pathway. |
Co-immunoprecipitation (Tubb3-DAPK2 interaction), siRNA knockdown, overexpression, immunofluorescence, rat in vivo model |
Archives of toxicology |
Low |
31020377
|
| 2026 |
In osteoblasts, VGLL3 regulates DAPK2 expression (identified by RNA-seq of Vgll3-KD cells); DAPK2 knockdown phenocopied Vgll3 loss, reducing autophagic flux and impairing osteoblast differentiation. DAPK2 overexpression partially rescued autophagy and osteogenic differentiation in Vgll3-deficient cells, and FOXM1 was implicated as a potential transcriptional regulator of DAPK2 in this context. |
RNA-seq, shRNA knockdown (Vgll3 and Dapk2), DAPK2 overexpression rescue, LC3-II/p62 immunoblot, transmission electron microscopy, alkaline phosphatase/Alizarin Red staining |
BioFactors |
Low |
42052791
|
| 2026 |
YTHDF3 directly recognizes m6A-modified Dapk2 transcripts and promotes their decay, thereby suppressing DAPK2 protein levels; melatonin rescues YTHDF3 expression under mechanical unloading, leading to DAPK2 mRNA degradation that supports osteoblast differentiation and survival. DAPK2 was characterized as a negative regulator of osteoblast differentiation and survival. |
m6A-seq/MeRIP, YTHDF3 KD/OE, Dapk2 KD, hindlimb unloading mouse model, western blot, qPCR, mineralization assays |
Journal of pineal research |
Low |
42149012
|