| 2004 |
MOCA/DOCK3 binds directly to Rac1 and enhances its GTPase activity, leading to activation of c-Jun N-terminal kinase (JNK) and changes in cell morphology. Farnesylated MOCA localized to the plasma membrane showed enhanced Rac1 and JNK activation. Endogenous MOCA concentrates at lamellipodia leading edges and growth cones co-localized with actin filaments. |
Co-immunoprecipitation, GTPase activity assay (Rac1 pull-down), overexpression of farnesylated vs. wild-type MOCA, immunofluorescence in cortical neurons |
The Journal of biological chemistry |
High |
14718541
|
| 2010 |
DOCK3 directly associates with WAVE proteins through its DHR-1 domain. BDNF-TrkB signaling recruits the DOCK3/WAVE1 complex to the plasma membrane, whereupon DOCK3 activates Rac1 and dissociates from the WAVE complex in a phosphorylation-dependent manner, driving axonal outgrowth. Key conserved amino acids in the DHR-2 domain are critical for catalytic GEF activity of DOCK3. |
Co-immunoprecipitation, DHR-1/DHR-2 domain mutagenesis, membrane fractionation, in vivo optic nerve regeneration in Dock3 transgenic mice, neurite outgrowth assay |
Proceedings of the National Academy of Sciences of the United States of America |
High |
20368433
|
| 2012 |
DOCK3 binds to and inactivates GSK-3β at the plasma membrane, increasing the non-phosphorylated active form of CRMP-2, which promotes microtubule assembly and axon branching. BDNF induced GSK-3β phosphorylation and CRMP-2 dephosphorylation in hippocampal neurons, and elevated GSK-3β phosphorylation was detected in regenerating axons of Dock3 transgenic mice after optic nerve injury. |
Co-immunoprecipitation, phosphorylation assays (Western blot), primary hippocampal neuron culture, in vivo optic nerve crush in Dock3 Tg mice |
The Journal of neuroscience |
High |
22219288
|
| 2012 |
DOCK3 forms a ternary complex with Elmo and activated RhoG downstream of BDNF-TrkB signaling to induce neurite outgrowth via Rac1 activation in PC12 cells. Phosphorylation of DOCK3 and its interaction with Elmo are both required for efficient Rac1 activation; membrane recruitment of DOCK3 is also necessary. |
Co-immunoprecipitation, Rac1 pull-down (active GTP-bound Rac1 assay), neurite outgrowth assay in PC12 cells, site-directed mutagenesis of phosphorylation sites |
Genes to cells |
High |
22734669
|
| 2013 |
DOCK3 directly binds to the intracellular C-terminus domain of NR2B (GluN2B), an NMDA receptor subunit. Overexpression of DOCK3 in transgenic mice decreased NR2B expression in the retina and ameliorated NMDA-induced retinal degeneration. DOCK3 overexpression also suppressed phosphorylation of NR2B in GLAST-KO mice, reducing excitotoxic and oxidative stress-related RGC death. |
Co-immunoprecipitation (DOCK3 and NR2B C-terminus), Western blot, in vivo retinal degeneration assay in Dock3 Tg and GLAST KO mice, NMDA injection model |
Cell death and differentiation |
High |
23852370
|
| 2013 |
DOCK3 binds to the NR2D C-terminal domain and reduces surface expression of NR2D, thereby protecting retinal ganglion cells from excitotoxicity. NR2D deficiency also attenuates RGC loss in GLAST-deficient mice. |
Co-immunoprecipitation (DOCK3 and NR2D C-terminus), surface expression assay, genetic mouse models (NR2D KO × GLAST KO), RGC counting |
Molecular brain |
High |
23641686
|
| 2008 |
MOCA/DOCK3 functions as a negative regulator of Wnt/β-catenin signaling. MOCA forms a complex with β-catenin and inhibits transcription of Wnt target genes, reduces nuclear β-catenin levels, increases membrane-bound β-catenin levels, and enhances cell-cell adhesion. Epistasis experiments placed MOCA action at the level of reducing nuclear β-catenin. |
Functional cDNA library screen in human cells, co-immunoprecipitation (MOCA and β-catenin), Wnt target gene luciferase reporter assay, subcellular fractionation, cell-cell adhesion assay |
Molecular biology of the cell |
High |
18716063
|
| 2012 |
MOCA/DOCK3 is a downstream integrator of neuronal death signals from both familial AD-linked APP mutants and presenilin (PS1/PS2) mutants, in a γ-secretase-independent manner. MOCA links PS-mediated death signals with APP-mediated death signals at a point between Rac1/Cdc42 and ASK1 (apoptosis signal-regulating kinase 1). |
Cell death assays with AD mutant constructs (APP, PS1, PS2), epistasis analysis using MOCA overexpression/knockdown, genetic interaction experiments in neuronal cells |
The Biochemical journal |
Medium |
22115042
|
| 2014 |
DOCK3 is a direct target of miR-486 in skeletal muscle. Overexpression of DOCK3 in human myotubes modulates PTEN/AKT signaling (increases PTEN and reduces phosphorylated AKT) and induces apoptosis. In dystrophic mice, miR-486 overexpression decreases DOCK3 levels, reduces PTEN expression, and increases phospho-AKT. |
miR-486 target validation (3'UTR luciferase), DOCK3 overexpression in human myotubes, Western blot for PTEN/pAKT, in vivo miR-486 transgenic mice on DMD background |
The Journal of clinical investigation |
High |
24789910
|
| 2015 |
DOCK3, as a RAC1-GEF, is a target of miR-512-3p in NSCLC cells. Knockdown of DOCK3 inhibited cell adhesion, migration, and invasion, and decreased active RAC1 levels, demonstrating that DOCK3 promotes RAC1 activity and metastatic behaviors in lung cancer cells. |
miR-512-3p overexpression, DOCK3 siRNA knockdown, active RAC1 pull-down assay, cell migration/invasion assays in A549 and H1299 cell lines |
The international journal of biochemistry & cell biology |
Medium |
25687035
|
| 2016 |
DOCK3 acts as a negative regulator of WAVE2 expression by blocking β-catenin nuclear translocation; phospho-Annexin A2 (pY23) promotes DOCK3 expression, and DOCK3 inhibits lamellipodium dynamics and tumor cell movement via suppression of β-catenin/WAVE2 signaling axis. |
Co-immunoprecipitation, in vitro kinase assay (Src/CD147/Annexin A2), DOCK3 knockdown, Western blot, cell migration assay, β-catenin subcellular localization |
Oncotarget |
Medium |
26716413
|
| 2014 |
DOCK3 is expressed in oligodendrocytes, and Dock3 overexpression protects myelin in the corpus callosum and optic nerves in a cuprizone-induced demyelination model. In Dock3 Tg mice, Erk activation is increased, suggesting ERK signaling as part of the Dock3-mediated protective mechanism. |
Immunohistochemistry for oligodendrocyte markers, cuprizone demyelination model in Dock3 Tg mice, multifocal electroretinogram, Western blot (pErk) |
Cell death & disease |
Medium |
25165881
|
| 2015 |
Dock3 expression increases in epileptic brain tissue and models, and Dock3 shRNA knockdown reduces Rac1-GTP levels, decreases severity of status epilepticus, reduces spontaneous recurrent seizures, and increases latency in a kindling model, placing Dock3 upstream of Rac1 in epileptogenesis. |
shRNA knockdown of Dock3 in lithium-pilocarpine and pentylenetetrazole kindling mouse models, active Rac1 pull-down, behavioral seizure scoring |
Molecular neurobiology |
Medium |
26319681
|
| 2019 |
DOCK3 missense variants in or adjacent to the DHR-2 domain significantly reduce Rac1 GEF activity compared to wild-type DOCK3, confirming that the DHR-2 domain is critical for Rac1 activation and that loss-of-function of this activity underlies the neurodevelopmental phenotype. |
Site-directed mutagenesis of patient missense variants, Rac1 pull-down (active GTP-bound Rac1) assay in transfected cells, protein structural modeling |
European journal of human genetics |
Medium |
30976111
|
| 2020 |
DOCK3 is a dosage-sensitive modulator of skeletal muscle function. Haploinsufficiency of Dock3 in DMD mice improved dystrophic muscle pathologies, but complete knockout worsened muscle function. Dock3 KO myoblasts are defective in myogenic differentiation, with transcriptomic analyses revealing decreased myogenic factors. |
Dock3 global knockout mice crossed with mdx dystrophic mice, muscle function tests, myoblast differentiation assays, RNA-seq transcriptomics |
Human molecular genetics |
Medium |
32766788
|
| 2023 |
DOCK3 directly interacts with SORBS1 through its C-terminal domain in skeletal muscle. Conditional muscle-specific Dock3 knockout (mKO) mice display hyperglycemia, increased fat mass, impaired myofiber regeneration, and metabolic dysfunction, establishing a role for DOCK3 in skeletal muscle glucose metabolism and regeneration distinct from its neuronal functions. |
Dock3 conditional skeletal muscle-specific knockout mice, co-immunoprecipitation (DOCK3 and SORBS1), metabolic phenotyping, muscle histology, locomotor activity assays |
FASEB journal |
High |
36865261 37742307
|
| 2023 |
ZBED6 transcription factor directly represses DOCK3 expression (ChIP-seq and RNA-seq), and in ZBED6-deficient septic pigs, increased DOCK3 expression activates the RAC1/PI3K/AKT pathway, protecting against sepsis-induced muscle wasting. |
ChIP-seq and RNA-seq in ZBED6-deficient pigs, Western blot (DOCK3, RAC1-GTP, pAKT), CLP sepsis pig model, ZBED6 overexpression in myotubes |
Advanced science |
Medium |
37551034
|
| 2023 |
Low-molecular-weight compounds that stimulate the interaction between DOCK3 and Elmo1 promote neurite outgrowth in vitro and neuroprotection/axon regeneration in a mouse optic nerve injury model, confirming that the DOCK3-Elmo1 interaction is a functional node for Rac1 activation and axon elongation. |
High-throughput compound screen (462,169 compounds), DOCK3-Elmo1 interaction assay, neurite outgrowth assay, in vivo optic nerve crush model |
Cell death discovery |
Medium |
37188749
|
| 2025 |
HAUS7 (HAUS augmin-like complex subunit 7) is a direct binding partner of DOCK3. Neuronal HAUS7 is transported from the cell body to the growth cone under control of DOCK3. Phosphorylation of DOCK3 at Y562 by TrkB signaling causes dissociation of HAUS7, which is required for microtubule assembly and axon regeneration. Deletion of Haus7 significantly reduced microtubule formation and axon regeneration after optic nerve crush. |
Co-immunoprecipitation (DOCK3-HAUS7), phospho-specific mutagenesis (Y562), live imaging of HAUS7 transport, Haus7 conditional knockout mice with optic nerve crush, transcriptome analysis |
Science advances |
High |
40712007
|
| 2016 |
Dock3 overexpression promotes internalization and degradation of NMDA receptors in the retina in vivo. This process is suggested to be mediated by inhibition of Fyn (a Src family tyrosine kinase), reducing excitotoxic damage and oxidative stress, thereby promoting RGC survival. |
In vivo Dock3 Tg mice with optic nerve crush or NMDA stimulation, Western blot for NMDA receptor subunit levels and Fyn activity, retinal ganglion cell survival counts |
Histology and histopathology |
Medium |
27615513
|