| 1998 |
DEDD contains an N-terminal death effector domain (DED) through which it interacts with FADD and caspase-8; endogenous DEDD resides in the cytoplasm and translocates to the nucleus/nucleolus upon CD95 stimulation, where it co-localizes with UBF; recombinant DEDD binds DNA and reconstituted mononucleosomes and inhibits RNA polymerase I transcription in a reconstituted in vitro system; overexpression induces apoptosis primarily through its DED. |
Co-immunoprecipitation, immunofluorescence/co-localization with UBF, in vitro transcription reconstitution assay, DNA/nucleosome binding assay, overexpression apoptosis assay |
The EMBO journal |
High |
9774341
|
| 2001 |
Nuclear/nucleolar localization of DEDD is required for its apoptotic activity; DEDD activates caspase-6 through its DED domain; DEDD specifically inhibits RNA polymerase I-dependent transcription in vivo (blocking BrUTP incorporation); the DED alone is sufficient for DNA binding, caspase-6 activation, and Pol I transcriptional repression; mutation of all three nuclear localization signals (NLS) abolishes nuclear targeting and apoptosis induction. |
BrUTP incorporation assay (in vivo Pol I transcription), immunofluorescence with anti-DEDD antibody, NLS mutagenesis, caspase-6 activity assay, cytoplasmic DEDD (DEDD-ΔNLS1-3) functional analysis |
Cell death and differentiation |
High |
11753564
|
| 2002 |
Diubiquitinated DEDD interacts with the K8/18 intermediate filament network and pro-caspase-3; early in apoptosis, DEDD and DEDD2 form filaments co-localizing with K8/18 in a caspase-3-dependent manner; these structures collapse into inclusions containing active caspase-3 and cleaved K18; cytosolic DEDD (DEDD-ΔNLS1-3) inhibits caspase-3 activation and K18 cleavage; siRNA-mediated DEDD knockdown inhibits staurosporine-induced DNA degradation; DEDD functions as a scaffold directing effector caspase-3 to specific substrates. |
Co-immunoprecipitation (DEDD with K18 and pro-caspase-3), immunofluorescence, siRNA knockdown, biochemical kinetics of caspase-3 activation and K18 cleavage |
The Journal of cell biology |
High |
12235123
|
| 2002 |
DEDD interacts with the TFIIIC102 subunit of human transcription factor TFIIIC via its DED domain; co-expression of DEDD with hTFIIIC102 causes translocation of hTFIIIC102 to the nucleus; overexpression of DEDD inhibits NF-κB promoter-driven luciferase expression. |
Yeast two-hybrid identification of TFIIIC102 as DEDD interactor, co-immunoprecipitation, co-localization immunofluorescence, luciferase reporter assay |
Cell death and differentiation |
Medium |
11965497
|
| 2003 |
DEDD and DEDD2 bind to caspase-8 and caspase-10 (tandem DED-containing caspases) and to each other and to each other's homologue; nuclear localization is required for DEDD/DEDD2-induced apoptosis; both the N-terminal DED and C-terminal region of DEDD2 can independently induce apoptosis. |
Co-immunoprecipitation/binding assays, deletion analysis, overexpression apoptosis assay in various cell types |
Oncogene |
Medium |
12527898
|
| 2005 |
DEDD exists in non-, mono-, and diubiquitinated forms; monoubiquitination relocates DEDD from the nucleolus to the cytosol; a central region (aa 109–305) outside the DED is required for ubiquitination; cIAP-1 and cIAP-2 can catalyze both mono- and polyubiquitination of DEDD; fusion of ubiquitin to DEDD C-terminus (mimicking monoubiquitinated DEDD) increases its pro-apoptotic potential. |
Ubiquitin-DEDD fusion construct, mutagenesis of lysine residues, co-transfection with cIAP-1/2, immunofluorescence localization, apoptosis assay |
Apoptosis |
Medium |
16235027
|
| 2007 |
DEDD associates with the mitotic Cdk1/cyclin B1 complex via direct binding to cyclin B1 and inhibits its kinase activity; DEDD-null embryonic fibroblasts show increased nuclear Cdk1/cyclin B1 kinase activity, accelerated mitotic progression, and shortened G2/M; DEDD-/- mice display decreased body and organ weights; absence of DEDD reduces rRNA amounts and cell volume due to rapid termination of rRNA synthesis before division. |
Co-immunoprecipitation (DEDD with Cdk1/cyclin B1), kinase activity assay in DEDD-/- vs. DEDD+/+ cells, DEDD-/- mouse model, cell cycle analysis |
Proceedings of the National Academy of Sciences of the United States of America |
High |
17283331
|
| 2008 |
DEDD associates with S6K1 and supports S6K1 activity by preventing Cdk1-dependent inhibitory phosphorylation at the S6K1 C-terminus; DEDD-/- cells show reduced S6K1 activating phosphorylation (Thr-389) and increased inhibitory Cdk1-dependent phosphorylation; DEDD-/- mice show reduced pancreatic islet insulin mass and glucose intolerance, paralleling S6K1-/- phenotype. |
Co-immunoprecipitation (DEDD with S6K1), phosphorylation analysis in DEDD-/- cells/tissues, DEDD-/- mouse metabolic phenotyping, comparison with S6K1-/- mice |
The Journal of biological chemistry |
High |
19106089
|
| 2009 |
DEDD forms a complex with Akt and Hsp90 and supports the stability of both proteins; in DEDD-/- mice, Akt protein levels are diminished in skeletal muscle and adipose tissue, impairing GLUT4 translocation upon insulin stimulation; Cdk1 inhibition in DEDD-/- cells (via siRNA or inhibitor) restores Akt and Hsp90 levels, suggesting DEDD stabilizes Akt by suppressing Cdk1. |
Co-immunoprecipitation (DEDD with Akt and Hsp90), DEDD-/- mouse tissue analysis, Cdk1 siRNA knockdown, GLUT4 translocation assay |
Biochemical and biophysical research communications |
Medium |
20043882
|
| 2010 |
Female DEDD-/- mice are infertile due to defective uterine decidualization; DEDD-deficient decidual cells show attenuated polyploidization; DEDD associates with and stabilizes cyclin D3 (important for polyploidization); overexpression of cyclin D3 rescues polyploidization in DEDD-deficient cells; decreased Akt levels in DEDD-/- uteri contribute to defective decidualization, and Akt overexpression restores polyploidization. |
DEDD-/- mouse model (fertility and decidualization phenotype), co-immunoprecipitation (DEDD with cyclin D3), rescue by cyclin D3 or Akt overexpression, cell polyploidization assay |
The Journal of clinical investigation |
High |
21135503
|
| 2010 |
DEDD physically interacts with Smad3 and inhibits TGF-β1/Smad3-mediated transcription by preventing Smad3 phosphorylation and nuclear translocation, reducing formation of the Smad3-Smad4 complex; DEDD inhibits TGF-β1-mediated cell invasion. |
Co-immunoprecipitation (DEDD with Smad3), immunofluorescence (Smad3 localization), reporter assay for Smad3 transcriptional activity, invasion assay |
FEBS letters |
Medium |
20553715
|
| 2012 |
DEDD directly interacts with the PI3KC3 (PIK3C3)/Beclin1 complex and activates autophagy; the DEDD-PI3KC3 interaction stabilizes PI3KC3; this autophagy activation leads to lysosomal degradation of Snail and Twist (EMT master regulators), thereby attenuating epithelial-to-mesenchymal transition; DEDD overexpression suppresses invasion in vitro and metastasis in vivo while DEDD silencing promotes invasion. |
Co-immunoprecipitation (DEDD with PI3KC3/Beclin1), in vitro and in vivo invasion/metastasis assays, autophagy induction assay, Western blot for Snail/Twist degradation, siRNA knockdown |
Cancer research |
High |
22719072
|
| 2013 |
The N-terminal DED domain of DEDD is sufficient to inhibit TGF-β1-induced Smad3 nuclear translocation and Smad3-Smad4 complex formation; both full-length DEDD and its N-terminal (N-DEDD) and C-terminal (C-DEDD) truncation mutants can induce apoptosis and inhibit cell proliferation. |
Truncation mutant analysis, immunofluorescence, co-immunoprecipitation, flow cytometry (apoptosis), MTT assay (proliferation) |
Yao xue xue bao = Acta pharmaceutica Sinica |
Medium |
23888690
|
| 2020 |
DEDD interacts with and stabilizes Bcl-2 protein; DEDD knockdown downregulates Bcl-2 transcriptional activity and accelerates Bcl-2 degradation; DEDD expression levels are positively correlated with Bcl-2 in breast cancer cells; knockdown of DEDD causes drug resistance to doxorubicin and paclitaxel, while overexpression increases sensitivity. |
Co-immunoprecipitation (DEDD with Bcl-2), Western blot, luciferase-based transcription assay, drug sensitivity assay (MTT), siRNA knockdown and overexpression |
Biochemical and biophysical research communications |
Medium |
32113682
|
| 2025 |
ZIPK (zipper-interacting protein kinase) binds to and phosphorylates DEDD at the S9 residue, enhancing DEDD stability and leading to activation of caspase-3-mediated apoptosis in neurons; ZIPK haploinsufficiency reduces neuronal apoptosis, DEDD upregulation, and caspase-3 activation after traumatic brain injury; pharmacological ZIPK inhibition prior to TBI prevents DEDD upregulation and caspase-3 activation. |
Co-immunoprecipitation (ZIPK with DEDD), phosphorylation mapping (S9 site), ZIPK haploinsufficiency mouse model, in vitro kinase assay, caspase-3 activity assay, pharmacological ZIPK inhibitor |
Cell death & disease |
Medium |
40032841
|
| 2006 |
DEDD co-purifies with CK18 in subcellular fractionation (Triton X-100 resistant fraction); mono- or diubiquitinated DEDD associates with K8/18 cytokeratin filaments; cells with filamentous DEDD distribution are more apoptosis-prone; DEDD is proposed to provide a scaffold for proximity-induced autocleavage and activation of procaspase-9 and -3 at the CK8/18 scaffold. |
Double immunofluorescence, Triton X-100 extraction and subcellular fractionation, co-purification with CK18, apoptosis sensitivity assay (M30 staining after roscovitine) |
Apoptosis |
Medium |
16820959
|
| 2006 |
DEDDL, a longer human-specific isoform of DEDD produced by alternative splicing, is expressed in T lymphocytes and dendritic cells; DEDDL binds FADD and cFLIP more potently than DEDD in co-immunoprecipitation, and is a more potent apoptosis inducer than DEDD; both DEDD and DEDDL are substrates of active caspases. |
Co-immunoprecipitation (DEDDL vs. DEDD with FADD/cFLIP), overexpression apoptosis assay, RT-PCR expression analysis |
Gene expression |
Low |
17193921
|