| 2014 |
MICAL-2 mediates redox-dependent depolymerization of nuclear actin by oxidizing actin subunits, which decreases nuclear G-actin levels, prevents MRTF-A nuclear export, and thereby activates SRF/MRTF-A-dependent gene transcription in response to NGF and serum. MICAL-2 was also identified as a target of the SRF/MRTF-A inhibitor CCG-1423. |
Knockdown/overexpression in cells, nuclear fractionation, live-cell imaging of nuclear actin dynamics, small-molecule inhibition (CCG-1423) |
Cell |
High |
24440334
|
| 2013 |
The MICAL-2 monooxygenase domain is a flavin-dependent enzyme that uses NADPH (preferentially, via the proR hydride) to reduce its flavin; this reductive half-reaction is strongly stimulated by F-actin, consistent with the Class A aromatic hydroxylase regulatory mechanism where substrate binding promotes flavin reduction and prevents wasteful H2O2 production. |
In vitro enzymatic assay with purified monooxygenase domain, kinetic isotope effect measurement with deuterium-labeled NADPH, stopped-flow kinetics with and without F-actin |
Biochemistry |
High |
23927065
|
| 2021 |
MICAL2 mediates methionine oxidation of ARP3B, a specific subunit of the ARP2/3 complex, thereby destabilizing ARP2/3 complexes and leading to disassembly of branched actin filaments. |
Biochemical reconstitution and functional analysis of ARP2/3 isoform-specific regulation (reported as a commentary on primary data from Galloni et al.) |
The Journal of cell biology |
Medium |
34264264
|
| 2018 |
MICAL2 physically interacts with p53, retains it in the cytoplasm, and oxidizes p53 at methionine 40 and methionine 160, which promotes p53 ubiquitin-mediated degradation and reduces p53 tumor-suppressive function in colorectal cancer cells. |
Co-immunoprecipitation, reverse-phase nano ESI-LCMS mass spectrometry to detect methionine oxidation, immunofluorescence of p53 localization, ubiquitination assay, p53+/+ vs p53-/- cell comparison, in vivo xenograft |
Theranostics |
High |
30555547
|
| 2021 |
ARG (Abelson-related gene) kinase interacts with MICAL2 and phosphorylates it at Tyr445, Tyr463, and Tyr488; phosphorylation at Tyr445 and Tyr463 (but not Tyr488) enhances MICAL2-mediated F-actin disassembly, which directly oxidizes methionine 44 and 47 of F-actin. |
Direct phosphorylation assay, mass spectrometry confirmation of phosphorylation sites, non-phosphorylatable phenylalanine substitution mutants tested in F-actin disassembly assays and cell proliferation rescue experiments |
Oncogene |
High |
34750518
|
| 2016 |
MICAL2 knockdown in human cancer cells causes mesenchymal-to-epithelial transition and loss of motility/invasion, while re-expression of MICAL2 cDNA in depleted cells induces epithelial-to-mesenchymal transition, demonstrating MICAL2 is a direct regulator of EMT. |
siRNA/shRNA knockdown, cDNA rescue, cell morphology, migration and invasion assays |
Oncotarget |
Medium |
26689989
|
| 2017 |
MICAL2 maintains EGFR protein stability by delaying EGFR degradation in a Rac1-dependent manner, leading to sustained EGFR/P38/HSP27 and P38/MMP9 signaling and promotion of breast cancer cell migration. |
Gene overexpression and knockdown, Western blotting for EGFR degradation kinetics, Rac1 pull-down activity assay, wound-healing migration assay |
Acta physiologica |
Medium |
28719045
|
| 2020 |
MICAL2 is a nucleocytoplasmic shuttling protein; its nuclear export depends on myosin-9 interaction and its C-terminal fragment. Cytoplasmic (but not nuclear-restricted) MICAL2 promotes tumor malignancy through AKT and myosin-9 pathways, and nuclear export inhibitors or myosin-9 inhibitors reduce MICAL2-driven tumor promotion. |
Subcellular fractionation, nuclear export inhibitor treatment, myosin-9 siRNA knockdown, domain-deletion constructs (MICAL2-ΔC), in vitro and in vivo tumor assays |
Cancer letters |
Medium |
32360180
|
| 2021 |
MICAL2 promotes gastric cancer cell migration by inducing MRTF-A nuclear translocation in response to EGF/serum (via ROS generation), which subsequently activates CDC42 and increases MMP9 expression; silencing MICAL2 blocks CDC42 activation and MRTF-A nuclear retention. |
siRNA knockdown, overexpression, DCFH-DA ROS staining, nuclear/cytoplasmic fractionation, CDC42 pull-down activity assay, qPCR/Western blot for MMP9 |
Frontiers in molecular biosciences |
Medium |
33842533
|
| 2021 |
MICAL2 promotes gastric cancer cell proliferation through two parallel mechanisms: ROS generation and Cdc42 activation, both of which independently drive YAP dephosphorylation and YAP nuclear translocation; ROS scavenging (NAC/tempol) reverses MICAL2-mediated YAP activation. |
Overexpression/knockdown, ROS measurement, p-YAP/YAP ratio by Western blot, Cdc42 pull-down, nuclear/cytoplasmic YAP fractionation, ROS scavenger rescue experiments |
Oxidative medicine and cellular longevity |
Medium |
34650666
|
| 2022 |
MICAL2 promotes E-cadherin ubiquitination and degradation in a Cdc42-dependent manner, disrupting the E-cadherin/β-catenin complex and releasing β-catenin for nuclear translocation to drive gastric cancer cell migration; GSK3β inhibition rescues the MICAL2 knockdown migratory phenotype. |
Knockdown, co-immunoprecipitation of E-cadherin/β-catenin complex, nuclear/cytoplasmic fractionation, ubiquitination assay, Cdc42 pull-down, GSK3β inhibitor (LiCl) rescue |
Cell communication and signaling |
Medium |
36064550
|
| 2021 |
MICAL2 mediates myofibroblast differentiation in a SRF/MRTF-A-dependent manner: MICAL2 knockdown inhibits MRTF-A nuclear translocation in TGF-β1-stimulated fibroblasts and attenuates α-SMA, collagen-1, and fibronectin expression as well as epidural fibrosis in vivo. |
shRNA lentiviral knockdown, immunofluorescence of MRTF-A localization, Western blot for fibrosis markers, in vivo rat laminectomy model |
Life sciences |
Medium |
33453238
|
| 2020 |
MICAL2 is essential for myogenic lineage commitment: MICAL2 expression increases during skeletal, smooth, and cardiac muscle differentiation, it localizes to the nucleus of regenerating muscle fibers, and in vivo CRISPR-Cas9 deletion of Mical2 causes actin defects and loss of skeletal muscle homeostasis/functionality. |
In vivo Cas9/gRNA delivery, immunofluorescence localization, differentiation assays of adult stem cells and PSCs, muscle functional assessment |
Cell death & disease |
Medium |
32811811
|
| 2019 |
MICAL2 is required for endothelial cell response to VEGF: MICAL2 enters the p130Cas interactome in response to VEGF in HUVECs, and MICAL2 KD disables EC VEGF response, viability, and motility; MICAL2 is selectively expressed in neo-angiogenic (but not normal) capillary endothelia in human tumors. |
siRNA knockdown, CCG-1423 pharmacological inhibition, whole-genome gene expression profiling, immunohistochemistry of human tumor sections, proteomic interactome (p130Cas) |
Biochimica et biophysica acta. Molecular basis of disease |
Medium |
31004710
|
| 2023 |
Gas6/Axl receptor tyrosine kinase signaling activates SRF/MRTF-A-dependent transcription through MICAL2: Axl inhibition blocks serum-induced SRF/MRTF-A gene expression, Gas6/Axl-induced transcription requires MICAL2, and Gas6/Axl signaling promotes nuclear localization of MICAL2. |
Axl inhibitor treatment, MICAL2 siRNA knockdown, nuclear MICAL2 localization imaging, gene expression analysis of SRF/MRTF-A target genes, cell invasion assay |
Genes |
Medium |
38137053
|
| 2021 |
MICAL2 interacts with TGF receptor type I (TGFRI) and activates TGF-β/p-Smad2/EMT-like signaling to promote glioblastoma cell proliferation and migration. |
Co-immunoprecipitation of MICAL2-TGFRI interaction, knockdown of MICAL2, Western blot for p-Smad2, in vitro and in vivo (nude mouse) proliferation/invasion assays |
Frontiers in oncology |
Low |
34868922
|
| 2026 |
MICAL2 acts as a constitutively active actin-regulatory monooxygenase at endosomes: MICAL2 depletion or inhibition of its monooxygenase activity causes a substantial increase in Arp2/3-mediated branched actin at endosomes, impairing endosome fission and clathrin-dependent cargo recycling to the plasma membrane. |
siRNA knockdown, monooxygenase inhibitor treatment, fluorescence imaging of branched actin at endosomes, endosome fission and cargo recycling functional assays |
Journal of cell science |
Medium |
41797580
|
| 2025 |
MICAL2 facilitates p53 ubiquitination and degradation in NPC cells by recruiting the E3 ubiquitin ligase MDM2 to p53, in addition to influencing nuclear translocation of p53, thereby inhibiting ferroptosis and promoting tumor progression. |
Co-immunoprecipitation of MICAL2-MDM2-p53 complex, ubiquitination assay, nuclear translocation imaging, transcriptome sequencing, RACE experiments |
Oncogene |
Medium |
41832266
|
| 2019 |
MICAL2 activates ERK1/2 signaling in pulmonary arterial smooth muscle cells to promote proliferation; miR-205-5p suppresses this by targeting the MICAL2 3'UTR, and ERK1/2 inhibition blocks MICAL2-mediated proliferation. |
Luciferase reporter assay for miR-205-5p targeting of MICAL2 3'UTR, MICAL2 overexpression, ERK1/2 inhibitor rescue, cell proliferation assay |
Microvascular research |
Low |
30853343
|
| 2024 |
MICAL2 promotes ERK1/2 and AKT activation and macropinocytosis in pancreatic ductal adenocarcinoma cells, and upregulates KRAS and EMT signaling pathways; MRTF-B (but not MRTF-A) phenocopies MICAL2-driven in vivo tumor growth and metastasis. |
Loss- and gain-of-function experiments, Western blot for ERK1/2/AKT phosphorylation, macropinocytosis assay, in vivo xenograft/metastasis models, transcriptional analysis |
Cancer research |
Medium |
39745352
|