| 2005 |
Adenovirus-mediated overexpression of REIC/Dkk-3 in human prostate cancer cells induces apoptosis through activation of c-Jun-NH2-kinase (JNK), mitochondrial translocation of Bax, and reduction of Bcl-2, selectively in cancer cells lacking endogenous REIC/Dkk-3 but not in normal prostate epithelial/stromal cells. |
Adenoviral overexpression, apoptosis assays, JNK activation assays, xenograft mouse model |
Cancer research |
High |
16266978
|
| 2000 |
REIC/Dkk-3 encodes a 350 amino acid secreted protein with coiled-coil structures at N- and C-termini; it is a member of the Dickkopf family and its expression is down-regulated in immortalized and tumor-derived human cell lines compared to normal counterparts. |
cDNA cloning, sequence analysis, protein database search, expression profiling by Northern blot |
Biochemical and biophysical research communications |
Medium |
10652205
|
| 2004 |
DKK3/REIC protein exists as two isoforms: a 55 kDa cytosolic form and a 50 kDa secreted form; it is N-glycosylated. Ectopic expression suppresses cell growth and induces apoptosis, and reduces tumor growth in nude mice. |
Western blot, glycosylation analysis, ectopic expression, colony formation, xenograft |
Oncogene |
Medium |
15516983
|
| 2007 |
Downregulation of Dkk3 activates the Wnt/β-catenin pathway in lung cancer: ectopic Dkk3 expression inhibits TCF-4 activity, prevents nuclear accumulation of β-catenin, and reduces expression of TCF-4 targets c-Myc and cyclin D1; siRNA knockdown of Dkk3 is sufficient to promote β-catenin nuclear translocation and c-Myc expression. |
Ectopic expression, siRNA knockdown, TCF/LEF reporter assay, Western blot, nuclear fractionation |
Carcinogenesis |
High |
18048388
|
| 2008 |
REIC/Dkk-3-induced apoptosis in malignant mesothelioma proceeds through JNK activation, which is regulated by transcriptional downregulation of Id-1 via cooperative binding of ATF3 and Smad to the Id-1 promoter; ATF3 activation is induced by endoplasmic reticulum (ER) stress triggered by REIC/Dkk-3 overexpression. |
Adenoviral overexpression, mutagenesis of Id-1 promoter, reporter assays, co-transfection, orthotopic mouse model |
Cancer research |
High |
18922905
|
| 2008 |
Adenovirus-mediated REIC/Dkk-3 overexpression induces apoptosis in breast cancer cells in a JNK phosphorylation-dependent manner and downregulates P-glycoprotein in multidrug-resistant MCF7/ADR cells through JNK activation, thereby sensitizing cells to doxorubicin. |
Adenoviral overexpression, JNK inhibitor, Western blot, drug resistance assays, xenograft |
Cancer gene therapy |
Medium |
18654608
|
| 2009 |
REIC/Dkk-3 overexpression in normal human fibroblasts (NHF) triggers ER stress and induces production of interleukin-7 (IL-7) via a signaling cascade involving IRE1α, ASK1, p38, and IRF-1. Ad-REIC-infected NHF transplanted with cancer cells suppresses tumor growth, partly abrogated by IL-7 antibody. |
Adenoviral overexpression, siRNA knockdown of pathway components, cytokine measurement, co-transplantation tumor model, antibody neutralization |
The Journal of biological chemistry |
High |
19279003
|
| 2009 |
Recombinant REIC/Dkk-3 protein induces differentiation of human CD14+ monocytes into a novel dendritic cell-like cell type (REIC/Dkk-3Mo) and induces phosphorylation of STAT1 and STAT3; intratumoral administration suppresses tumor growth with DC and CD8+ T cell accumulation. |
Recombinant protein treatment, flow cytometry, STAT phosphorylation assay, in vivo intratumoral injection |
International journal of oncology |
Medium |
19212670
|
| 2010 |
REIC/Dkk-3 protein is localized to secretory vesicles in a punctate pattern around the nucleus in normal cells, and predominantly in the endoplasmic reticulum (ER) in cancer cells stably transfected with REIC/Dkk-3. Soluble recombinant REIC/Dkk-3 promotes prostatic acinar morphogenesis of RWPE-1 cells. |
Immunohistochemistry, confocal microscopy, recombinant protein treatment, 3D acinar morphogenesis assay |
International journal of oncology |
Medium |
21042718
|
| 2011 |
REIC/Dkk-3 physically interacts with dynein light chain Tctex-1 via its 136–157 amino acid region (containing a [-E-X-G-R-R-X-H-] motif); both proteins co-localize around the ER in human fibroblasts. |
Yeast two-hybrid screening, mammalian two-hybrid system with deletion mutants, immunocytochemistry |
Biochemical and biophysical research communications |
Medium |
21835165
|
| 2011 |
In renal cell carcinoma cells, Dkk-3 does not inhibit the canonical Wnt/β-catenin pathway but induces apoptosis via the non-canonical JNK pathway; Dkk-3 overexpression also increases p21, MDM-2, and Puma expression and induces G0/G1 arrest. Dkk-3 expression is regulated by histone modification rather than CpG methylation in RCC. |
Plasmid transfection, JNK pathway inhibitors, flow cytometry, Western blot, nude mouse xenograft, chromatin modification analysis |
Molecular carcinogenesis |
Medium |
21268126
|
| 2007 |
Heat shock protein Hsp70/72 is a key determinant of tumor cell-specific apoptosis induced by REIC/Dkk-3: cancer cells with low Hsp70/72 expression are sensitive to Ad-REIC-induced JNK-dependent apoptosis, while Hsp70/72 induction protects cancer cells and its inhibition sensitizes normal cells. |
Adenoviral overexpression, Hsp70/72 inducer/inhibitor pharmacological experiments, apoptosis assays |
International journal of molecular medicines |
Medium |
17549386
|
| 2010 |
BiP/GRP78 (an ER-resident chaperone) is a major determinant of resistance to Ad-REIC-induced apoptosis: BiP expression levels are inversely correlated with apoptosis rates, and siRNA-mediated downregulation of BiP sensitizes resistant prostate cancer cells to Ad-REIC in vitro and in vivo. |
Repeated Ad-REIC exposure to isolate resistant clones, Western blot screening, siRNA knockdown, xenograft model |
International journal of cancer |
Medium |
19626590
|
| 2008 |
An N-terminal 78 amino acid truncation of REIC/Dkk-3 is sufficient to induce ER stress and apoptosis in prostate cancer cells, identifying the N-terminal region as critical for ER stress induction. |
Truncation mutant construction, ER stress reporter, apoptosis assays, in vivo polymer-plasmid delivery |
Biochemical and biophysical research communications |
Medium |
18727918
|
| 2016 |
DKK3 in hepatocytes physically interacts with ASK1 under palmitate stimulation and inhibits activation of the downstream P38/JNK pathway. Hepatocyte-specific DKK3 overexpression improves insulin sensitivity and reduces hepatic steatosis, while DKK3 deficiency worsens these; dominant-negative ASK1 blocks DKK3-deficiency effects and constitutively active ASK1 overcomes DKK3 overexpression effects. |
Co-immunoprecipitation, hepatocyte-specific KO and overexpression mouse models, dominant-negative/constitutively active ASK1 epistasis, Western blot, metabolic phenotyping |
Journal of hepatology |
High |
27016281
|
| 2017 |
DKK3 induces differentiation of Sca1+ vascular progenitors and fibroblasts into smooth muscle cells via activation of TGF-β/ATF6 and Wnt signaling pathways. Absence of DKK3 (DKK3-/- ApoE-/- mice) leads to vulnerable atherosclerotic plaques with reduced SMC numbers and matrix deposition. |
DKK3-/- mouse model, ApoE-/- atherosclerosis model, in vitro differentiation assays, Western blot for TGF-β/ATF6 and Wnt pathways, carotid stenosis model |
Arteriosclerosis, thrombosis, and vascular biology |
High |
29284609
|
| 2018 |
Dkk3 induces nuclear import of β-catenin and enhances its interaction with FoxO3, which activates transcription of E3 ubiquitin ligases Fbxo32 and Trim63 (atrogin-1 and MuRF1), driving muscle atrophy. Forced Dkk3 expression in young mice causes muscle atrophy; reducing expression in old muscles restores muscle size and function. |
Transgenic/KO mouse models, co-immunoprecipitation (β-catenin/FoxO3), luciferase reporter for Fbxo32/Trim63 promoters, protein fractionation for nuclear β-catenin |
Nature communications |
High |
29717119
|
| 2017 |
DKK3 overexpression in cardiac fibroblasts inhibits ADAM17 phosphorylation, thereby increasing ACE2 expression and promoting AngII degradation; DKK3 also inhibits GSK-3β and β-catenin and decreases nuclear β-catenin translocation. These mechanisms reduce AngII-induced cardiac hypertrophy and fibrosis. |
Adenoviral overexpression, siRNA knockdown, Western blot, EdU proliferation assay, immunofluorescence, mouse AngII infusion model |
Journal of molecular and cellular cardiology |
Medium |
29196099
|
| 2017 |
DKK3 overexpression in HNSCC cells increases phosphorylation of Akt (S473) and c-Jun (Ser63) and promotes cancer cell proliferation, migration, and invasion via PI3K-Akt signaling, not through the canonical Wnt/β-catenin/TCF pathway (TCF/LEF reporter assay was negative). |
Plasmid transfection, Western blot, reporter assays (TCF/LEF), PI3K inhibitor (LY294002), migration/invasion assays, xenograft |
Oncology research |
Medium |
28470144
|
| 2015 |
The cysteine-rich C-terminal core domain of REIC/Dkk-3 (C17-REIC, ~17 kDa) is sufficient to induce DC-like cell differentiation from monocytes and induces phosphorylation of GSK-3β and STAT proteins at levels comparable to GM-CSF. Full-length and C17-REIC proteins exert anticancer effects in vivo via immune cell activation. |
Recombinant truncated protein generation, monocyte differentiation assay, flow cytometry, Western blot (GSK-3β/STAT phosphorylation), in vivo mouse renal adenocarcinoma model |
Oncology reports |
Medium |
25823913
|
| 2018 |
CRISPR-dCas9-VPR-mediated induction of endogenous DKK3 expression in PC3 prostate cancer cells inhibits TGF-β/Smad-dependent transcriptional activity and attenuates cell migration and proliferation, confirming a physiological role for endogenous Dkk-3 in limiting TGF-β/Smad signaling. |
CRISPR-dCas9-VPR transcriptional activation, TGF-β/Smad reporter assay, migration/proliferation assays, DNMT inhibitor (decitabine) |
Cancers |
Medium |
29843383
|
| 2017 |
DKK3 overexpression in keloid fibroblasts inhibits TGF-β receptor I, TGF-β receptor II expression, and reduces phosphorylation of Smad2 and Smad3, thereby suppressing cell proliferation, inducing apoptosis, and inhibiting collagen I, collagen III, and α-SMA synthesis. |
Plasmid transfection (pcDNA3.1-DKK3), Western blot, TGF-β receptor inhibitor (LY2109761), proliferation/apoptosis assays |
Biomedicine & pharmacotherapy |
Medium |
28458155
|
| 2015 |
Dkk3 in cardiac tissue activates Dvl1 and key proteins of the canonical Wnt pathway (cytoplasmic/nuclear β-catenin, c-Myc, Axin2) while downregulating non-canonical Wnt pathway proteins (JNK, CaMKII, HDAC4). Dkk3 transgenic expression improves cardiac function in DCM mice; Dkk3 knockout worsens it. |
Dkk3 transgenic and KO mice crossed with cTnT(R141W) DCM model mice, Western blot of canonical/non-canonical Wnt pathway components, survival analysis, cardiac morphology |
Laboratory investigation |
Medium |
26641069
|
| 2019 |
DKK3 overexpression in human fibroblasts under defined conditions triggers mesenchymal-to-epithelial transition, upregulates KDR (VEGFR2), and transdifferentiates fibroblasts into functional endothelial cells capable of angiogenesis, regulated by the VEGF/miR-125a-5p/STAT3 axis. |
Plasmid overexpression, morphology assays, gene expression profiling, in vitro/in vivo angiogenesis assays, tissue-engineered vascular graft, pathway analysis |
Arteriosclerosis, thrombosis, and vascular biology |
Medium |
30816803
|
| 2020 |
DKK3 attenuates JNK/AP-1-mediated neuroinflammation after intracerebral hemorrhage via Kremen-1 and DVL-1 (Dishevelled-1) pathways: rDKK3 administration reduces brain edema and JNK/AP-1 activation, effects abrogated by Kremen-1 siRNA or DVL-1 siRNA knockdown. |
Recombinant protein administration, Kremen-1 and DVL-1 siRNA knockdown, Western blot, immunofluorescence, ICH mouse model |
Journal of neuroinflammation |
Medium |
32331523
|
| 2022 |
DKK3 ameliorates neuropathic pain by inhibiting ASK1/JNK/p38-mediated microglia M1 polarization and neuroinflammation via Kremen-1 and DVL-1 pathways: intrathecal rDKK3 reduces p-ASK1, p-JNK, p-p38 and shifts microglia from M1 to M2; effects reversed by Kremen-1 siRNA or DVL-1 siRNA. |
Intrathecal rDKK3 injection, Kremen-1/DVL-1 siRNA, Western blot, immunofluorescence, ELISA, SNI rat model |
Journal of neuroinflammation |
Medium |
35658977
|
| 2021 |
PRMT5 epigenetically silences DKK3 by binding to its promoter and inducing symmetric methylation of H3R8 and H4R3 histones, leading to DKK3 repression and consequent WNT/β-catenin pathway activation in breast cancer cells. |
ChIP assay (PRMT5 binding to DKK3 promoter, H3R8/H4R3 methylation), PRMT5 inhibitor (CMP5), demethylating agents |
Journal of cellular and molecular medicine |
Medium |
33462997
|
| 2021 |
FoxO4 directly transcriptionally activates Dkk3 (identified by genome-wide occupancy and transcriptomic analyses); recombinant DKK3 protein restores normal IFN-γ production in FoxO4-deficient Th1 cells through downregulation of Lef1 expression. |
Genome-wide ChIP-seq occupancy, transcriptomic analysis, conditional T cell FoxO4 KO mice, recombinant DKK3 protein rescue, Listeria infection model |
The Journal of clinical investigation |
High |
36106640
|
| 2021 |
Loss of Dkk3 in mice reduces liver damage upon acute/chronic injury via increased proliferation of hepatocytes and LGR5+ liver progenitor cells; mechanistically, Dkk3 loss abolishes canonical Wnt signaling and reduces Gli3 expression, resulting in increased Hedgehog-signaling activity. |
Dkk3-null mouse model, acute/chronic liver injury models, organoid assays, Wnt and Hedgehog pathway Western blot/reporter analysis, iPSC reprogramming screen |
Advanced science |
Medium |
34306986
|
| 2023 |
Baf60c in skeletal myofibers interacts with Six4 to synergistically suppress Dkk3 expression; myofiber-specific Baf60c ablation upregulates Dkk3, which acts as a secreted paracrine inhibitor of muscle stem cell differentiation and impairs muscle regeneration in vivo. Dkk3 knockdown in obese mice improves muscle regeneration. |
Myofiber-specific Baf60c KO and transgenic mice, co-IP (Baf60c-Six4), luciferase reporter for Dkk3 promoter, in vivo Dkk3 siRNA knockdown, muscle regeneration assays |
The Journal of experimental medicine |
High |
37284884
|
| 2015 |
DKK-3 physically interacts with β2-microglobulin (β2M) and suppresses β2M-mediated activation of VEGFR-2/Akt/mTOR signaling and tumor angiogenesis in ovarian carcinoma cells; DKK-3 overexpression reduces VEGFR-2/Akt/mTOR phosphorylation and luciferase reporter activity. |
Co-immunoprecipitation, luciferase assay, Western blot, overexpression/siRNA knockdown of β2M |
Cellular signalling |
Medium |
26278164
|
| 2017 |
The Dkk3 locus encodes an additional intracellular isoform, Dkk3b, originating from a transcriptional start site in intron 2. Dkk3b protein sequesters cytoplasmic unphosphorylated β-catenin in an extra-nuclear complex with β-TrCP, preventing β-catenin nuclear translocation and thereby arresting β-catenin-driven cell proliferation. |
Identification of novel transcript/protein, co-immunoprecipitation (Dkk3b-β-catenin-β-TrCP complex), subcellular fractionation, proliferation assays |
PloS one |
Medium |
28738084
|
| 2014 |
Pax6 and Pax6(5a) directly bind a conserved binding site in the Dkk3 promoter (within a 200 bp region upstream of the TSS) and transcriptionally activate Dkk3 expression; mutation of this binding site abolishes transcriptional activation. Pax6-expressing fibroblasts show reduced responsiveness to canonical Wnt pathway stimulation. |
EMSA, promoter deletion/mutagenesis, luciferase reporter assay, RT-qPCR, Western blot, PAX6 siRNA knockdown in human cell lines |
PloS one |
Medium |
25029272
|
| 2021 |
MYC suppresses DKK3 transcription through the miR-17-92 cluster member miR-92a; DKK3 overexpression suppresses Wnt signaling in Apc-null murine colonic organoids and human colon cancer cells despite downstream activating mutations in the Wnt pathway. |
miR-92a overexpression/knockdown, DKK3 overexpression/knockdown, Wnt reporter assay, organoid assay, syngeneic orthotopic metastasis model |
Molecular cancer research |
Medium |
34593610
|
| 2006 |
DKK3 delivered by adenovirus to human adrenocortical cells inhibits aldosterone and cortisol biosynthesis (alone or with cAMP) and decreases cAMP-stimulated CYP17 mRNA, indicating a direct functional role for DKK3 in adrenocortical steroidogenesis. |
Adenoviral DKK3 delivery to primary adrenocortical cells, steroid biosynthesis measurement, real-time PCR for steroidogenic enzymes |
Hormone and metabolic research |
Medium |
16981135
|
| 2024 |
DKK3 upregulation (driven by METTL3-mediated m6A modification) activates the Wnt/β-catenin pathway by binding to the MFF promoter via TCF4/β-catenin, increasing MFF transcription, causing mitochondrial fission, oxidative stress, and renal fibrosis; DKK3 knockdown alleviates these effects. |
ChIP (DKK3 binding to MFF promoter), MeRIP (m6A), RIP, dual-luciferase assay, siRNA knockdown, UUO mouse model, Western blot |
Renal failure |
Medium |
38682264
|
| 2022 |
DKK3 secreted by human amniotic mesenchymal stem cells inhibits hepatic stellate cell activation and liver fibrosis by blocking the canonical Wnt/β-catenin signaling pathway, as demonstrated by siRNA knockdown of DKK3 in hAMSCs reversing the anti-fibrotic effect. |
hAMSC transplantation, antibody array, siRNA knockdown of DKK3 in hAMSCs, Western blot for Wnt/β-catenin pathway, CCl4-induced fibrosis model |
Stem cell research & therapy |
Medium |
35659360
|
| 2021 |
Dkk3 directly interacts with β-catenin (shown by co-immunoprecipitation and immunofluorescence co-localization); overexpression of Dkk3 promotes osteogenic differentiation of BMSCs by inhibiting this interaction and activating downstream osteogenic gene transcription. |
Co-immunoprecipitation, immunofluorescence co-localization, luciferase reporter (miR-129-5p/Dkk3), Western blot, osteogenic differentiation assays, in vivo calvaria defect model |
Stem cells international |
Medium |
34326879
|