| 2002 |
mina53 (RIOX2) is a direct transcriptional target of c-Myc: c-Myc protein binds the mina53 promoter E-box sites in vivo, and ectopic c-Myc (but not a transactivation-domain mutant) induces mina53 mRNA even in the presence of protein synthesis inhibitors. RNAi knockdown of mina53 severely suppresses cell proliferation. |
Chromatin immunoprecipitation (ChIP) of c-Myc at mina53 promoter; promoter-reporter assays; c-MycER activation with cycloheximide; RNA interference with proliferation readout |
The Journal of biological chemistry |
High |
12091391
|
| 2005 |
NO52 (RIOX2) localizes constitutively to the granular component of nucleoli, is present in free preribosomal particles but absent from cytoplasmic ribosomes, and co-immunoprecipitates with ribosomal proteins and non-ribosomal nucleolar proteins. Its nucleolar accumulation depends on ongoing rRNA transcription and the metabolic state of the cell. |
Immunolocalization; subcellular fractionation; co-immunoprecipitation followed by MALDI-MS; treatment with RNase A, actinomycin D, and serum starvation |
European journal of cell biology |
High |
15819408
|
| 2009 |
mdig (RIOX2) demethylates tri-methyl lysine 9 of histone H3 (H3K9me3): overexpression reduces H3K9me3 at the rRNA gene promoter and increases RNA Pol I occupancy and rRNA transcription, while gene silencing has the opposite effect. |
Gene overexpression and siRNA knockdown; chromatin immunoprecipitation (ChIP) for H3K9me3 and RNA Pol I; rRNA expression assays |
Cell cycle (Georgetown, Tex.) |
Medium |
19502796
|
| 2013 |
mdig (RIOX2) demethylates H3K9me3 at the promoter of the imprinted H19 lncRNA gene: overexpression reduces H3K9me3 at the H19 promoter and activates H19 transcription; shRNA/siRNA knockdown increases H3K9me3 and reduces H19 expression. In vitro demethylation assay with immunoprecipitated mdig and an H3K9me3 peptide confirmed catalytic activity. |
Overexpression and shRNA/siRNA knockdown with ChIP for H3K9me3; in vitro demethylation assay using immunoprecipitated mdig protein and histone H3 peptide substrate |
Oncotarget |
Medium |
23965803
|
| 2013 |
Mina53-deficient mice show reduced Th17 cell infiltration into airways and increased Treg cell infiltration following allergen (house dust mite) challenge, with lower IL-4 and IL-5 levels, demonstrating that Mina53 (RIOX2) regulates the Th17/Treg balance and allergic airway responses. |
Mina53-knockout mouse model; intranasal allergen challenge; bronchoalveolar lavage cell differential counts; ELISA for cytokines; airway hyperresponsiveness measurement |
Cell structure and function |
Medium |
23748603
|
| 2015 |
mdig (RIOX2) protein co-immunoprecipitates with DNA double-strand break repair and chromatin-binding proteins XRCC5, XRCC6, RBBP4, CBX8, PRMT5, and TDRD in lung cancer (A549) and bronchial epithelial (BEAS-2B) cells, validated by reciprocal co-immunoprecipitation. |
Co-immunoprecipitation with anti-mdig antibody followed by nanoESI-MS/MS proteomics (Orbitrap); reciprocal co-IP validation; four independent experiments |
Oncotarget |
Medium |
26293673
|
| 2015 |
mdig (RIOX2) regulates cell cycle progression through p27(KIP1): knockdown of mdig increases p27(KIP1) mRNA and protein and inhibits phosphorylation of p27 at Thr187, causing cell cycle arrest; in human lung cancer tissues, mdig upregulation inversely correlates with p27(KIP1) levels. |
siRNA knockdown in A549 cells; MTT proliferation assay; cell cycle analysis; RT-qPCR for cell cycle regulators; Western blot for p27(KIP1) and phospho-p27(KIP1) isoforms; Western blot on human lung cancer tissue samples |
Tumour biology |
Medium |
25851349
|
| 2016 |
mdig (RIOX2) directly interacts with c-Myc and JAK1 in multiple myeloma cell lines, contributing to hyperactivation of the IL-6-JAK-STAT3 signaling pathway; genetic silencing of mdig reduces activity of downstream effectors in this pathway. |
Co-immunoprecipitation; integrative genomics and proteomics; siRNA knockdown with pathway activity readouts (Western blot for STAT3 phosphorylation) |
Scientific reports |
Medium |
27833099
|
| 2017 |
MDIG (RIOX2) regulates H3K9me3 at the p21(CIP1/WAF1) promoter in hepatocellular carcinoma: MDIG overexpression reduces H3K9me3 and activates p21 expression; knockdown has the opposite effect, influencing HCC cell proliferation and migration. |
Gain- and loss-of-function experiments (overexpression and siRNA knockdown) in HCC cells; ChIP for H3K9me3; Western blot for p21; xenograft tumor model |
Cell death & disease |
Medium |
28471446
|
| 2018 |
MINA53 (RIOX2) regulates expression of the CDC45-MCM-GINS (CMG) complex genes required for DNA replication initiation; knockdown reduces CMG gene expression, induces DNA replication stress, diminishes ATM/ATR-H2AX DNA damage response, and leads to glioblastoma cell apoptosis. |
siRNA knockdown in glioblastoma cells; DNA replication initiation assays; RT-qPCR and Western blot for CMG genes; flow cytometry for apoptosis; Western blot for ATM/ATR-H2AX pathway components |
Cell death & disease |
Medium |
30333481
|
| 2019 |
MINA53 (RIOX2) preferentially demethylates H3K36me3 in vitro, and its depletion by RNAi increases local H3K36me3 levels at the HIV-1 LTR, promoting HIV-1 latency reversal. The pan-JmjC inhibitor JIB-04 inhibits MINA53-mediated H3K36me3 demethylation and synergizes with latency-reversing agents to reactivate latent HIV-1. |
CRISPR/Cas9 screen; RNAi depletion; in vitro histone demethylation assay; ChIP for H3K36me3 at LTR; HIV-1 latency reactivation assays; JIB-04 inhibitor treatment |
Nucleic acids research |
High |
31165872
|
| 2018 |
Loss of mdig (RIOX2) expression enhances global DNA methylation and H3K9me3 heterochromatin, and increases migration and invasion of triple-negative breast cancer cells, indicating mdig acts as an inhibitor of DNA and histone methylation and suppresses metastatic behavior in advanced breast cancer. |
siRNA/shRNA knockdown; global DNA methylation assay; chromatin accessibility assay; ChIP for H3K9me3; Transwell migration/invasion assays |
Signal transduction and targeted therapy |
Medium |
30254753
|
| 2020 |
ZNF143 promotes expression of MDIG (RIOX2) by direct transcriptional activation; MDIG in turn reduces H3K9me3 at the CDC6 promoter to activate CDC6 transcription and accelerate HCC cell-cycle progression, establishing a ZNF143-MDIG-CDC6 oncoprotein axis. |
ChIP for ZNF143 at MDIG promoter; gain- and loss-of-function experiments; ChIP for H3K9me3 at CDC6 promoter; Western blot; in vitro and in vivo tumor growth assays |
Cancer research |
Medium |
32312832
|
| 2018 |
Phylogenetic and structural analyses show that RIOX2 (MINA53) and RIOX1 (NO66) share conserved active-site residues within their JmjC domains, a dimerization domain, and a winged-helix domain; the proteins catalyze C-3 histidine hydroxylation in ribosomal proteins (Rpl27a for MINA53). RIOX2 has a distinct subnuclear localization in Hydra compared to human, indicating evolutionary adaptation. |
Phylogenomic analysis of 49 metazoan species; domain architecture comparison; immunofluorescence for subnuclear localization in HeLa cells and Hydra |
BMC evolutionary biology |
Medium |
29914368
|
| 2023 |
MINA53 (RIOX2) is a histidine hydroxylase with narrow substrate selectivity: it catalyzes C-3 hydroxylation of a histidine residue in ribosomal protein Rpl27a. Inhibition assays with histidine analogues in Rpl peptides showed that MINA53 activity can be inhibited by competition with non-oxidized peptides containing acyclic side-chain analogues (Asn, Gln, homoGln). |
In vitro biochemical assays with natural and unnatural histidine analogues incorporated into Rpl peptides; substrate selectivity assays; inhibition assays |
RSC chemical biology |
High |
36908702
|
| 2023 |
MDIG (RIOX2) demethylates H3K9me3 at the OTX2 promoter to increase chromatin accessibility, allowing OTX2 transcription factor expression; OTX2 then binds the Myc promoter to activate Myc expression, forming a positive feedback loop that sustains hepatocyte proliferation during liver regeneration. |
Liver-specific MDIG knockout mice; partial hepatectomy and CCl4 injury models; ChIP for H3K9me3 at OTX2 promoter; ATAC-seq for chromatin accessibility; ChIP for OTX2 at Myc promoter; RNA-seq |
Signal transduction and targeted therapy |
High |
37709738
|
| 2024 |
Mina53 (RIOX2) is a bona fide H4R3me2a (asymmetric di-methylation at arginine 3 of histone H4) eraser: identified as an H4R3me2a interactor by photoaffinity capture, it demethylates H4R3me2a in vitro and in cells. In a transgenic mouse with neural stem/progenitor cell-specific Mina53 deletion, failure to demethylate H4R3me2a dysregulates genes for NSC proliferation and differentiation, impairing cognitive function. |
Photoaffinity capture for interactor identification; in vitro demethylation biochemical assay; cellular H4R3me2a quantification; molecular dynamics simulation; transgenic conditional KO mouse with cognitive testing |
Nature communications |
High |
39587091
|
| 2025 |
Mina53 (RIOX2) is an arginine demethylase that removes asymmetric dimethylation at arginine 337 of p53 (p53 R337me2a): demethylation reduces p53 protein stability and oligomerization, alters chromatin modifications at p53 target gene promoters, and suppresses p53-mediated transcriptional activation and cell-cycle arrest, thereby promoting tumor growth in mouse xenograft and spontaneous tumor models. |
In vitro demethylation assay; mass spectrometry for p53 arginine methylation status; co-immunoprecipitation for oligomerization; ChIP for chromatin modifications at p53 target promoters; xenograft and spontaneous tumor mouse models; loss-of-function experiments |
Cell reports |
High |
39864061
|
| 2017 |
mdig (RIOX2) suppresses epithelial-mesenchymal transition (EMT) in NSCLC by inhibiting GSK-3β phosphorylation, which promotes β-catenin phosphorylation and destabilization, downregulating slug, snail, and ZEB1 transcription factors, thereby increasing epithelial markers (E-cadherin, claudin-1) and decreasing mesenchymal markers (vimentin, N-cadherin). |
Lentiviral overexpression and knockdown in A549 and HUVEC cells; Transwell invasion/migration assays; Western blot for GSK-3β, β-catenin, EMT markers and transcription factors |
International journal of oncology |
Medium |
29039479
|
| 2019 |
MDIG (RIOX2) promotes cisplatin resistance in lung adenocarcinoma by activating WNT/β-catenin signaling, which upregulates ABC transporter expression (ABCB1, ABCC1, ABCG2); overexpression increases IC50 for cisplatin while knockdown reduces it. |
siRNA knockdown and overexpression in A549 and A549/DDP cisplatin-resistant cells; RT-qPCR and Western blot for MDIG, ABC transporters, WNT pathway components; IC50 determination |
Oncology letters |
Medium |
31579066
|
| 2021 |
mdig (RIOX2) depletion by CRISPR-Cas9 in bronchial epithelial cells reduces expression of SARS-CoV-2 receptors NRP1 and NRP2, cathepsins, and glycan metabolism genes, associated with enrichment of H3K9me3 and/or H3K27me3 at these loci as determined by ChIP-seq. |
CRISPR-Cas9 gene editing; ChIP-seq for H3K9me3/H3K27me3; RT-qPCR and Western blot for NRP1, NRP2, cathepsins; gene ontology analysis |
Theranostics |
Medium |
34335974
|
| 2022 |
Mdig (RIOX2) deletion in triple-negative breast cancer MDA-MB-231 cells enhances global H3K36me3 and upregulates X-chromosome-linked genes for cell motility and invasion (including MAGED2); silencing MAGED2 partially reverses the invasive migration of mdig-KO cells, establishing H3K36me3/MAGED2 as a downstream effector axis. |
CRISPR-Cas9 mdig knockout; ChIP-seq for H3K36me3; RNA-seq; siRNA knockdown of MAGED2; in vivo orthotopic xenograft; Transwell migration assay |
iScience |
High |
36124233
|