| 1999 |
ARID3B (Bdp) binds to the COOH-terminal region of hypophosphorylated retinoblastoma protein (pRb) through its conserved region, and also binds to the matrix attachment region (MAR) of the immunoglobulin heavy-chain locus, implicating it in transcriptional regulation of differentiation and tissue-specific genes. |
Co-immunoprecipitation, DNA binding assay (MAR binding) |
Cancer research |
Medium |
10446990
|
| 2006 |
ARID3B is required for survival of neural crest during embryogenesis, can immortalize mouse embryonic fibroblasts (MEFs) on its own, and confers malignancy to MEFs when co-expressed with MYCN, demonstrating oncogenic activity and a cooperative role with MYCN in malignant transformation. |
siRNA knockdown in neuroblastoma cell lines, antisense inhibition, transfection/overexpression, in vivo tumor growth assay in nude mice |
Cancer research |
High |
16951138
|
| 2011 |
Arid3b is expressed in the apical ectodermal ridge (AER) and regulates cell motility and actin cytoskeleton distribution; interference with Arid3b activity causes aberrant AER development due to defective cell movements without changes in cell number or major signaling pathway gene expression. |
Loss-of-function in mouse and chick embryos (interference constructs), in vitro motility assay, actin cytoskeleton staining (phalloidin), DiI labeling of progenitor cells in vivo |
Development (Cambridge, England) |
High |
21307092
|
| 2012 |
ARID3B full-length isoform (Fl) is predominantly nuclear but also present at the plasma membrane and cytosol; a novel splice form (Sh) lacking C-terminal exons 5-9 accumulates in cytosol and membrane when overexpressed. ARID3B Fl overexpression induces TNFα-mediated apoptosis by upregulating pro-apoptotic genes (BIM, TNFα, TRAIL, TRADD, TNF-R2, Caspase 10, Caspase 7), while ARID3B Sh does not induce apoptosis. |
Subcellular fractionation, overexpression of isoforms, gene expression analysis, cell viability assays |
PloS one |
Medium |
22860069
|
| 2012 |
ARID3B is a direct target of miR-125b; restoration of miR-125b in MCF7 breast cancer cells decreases ARID3B expression and reduces cell motility and migration. Transient silencing of ARID3B phenocopies miR-125b's effect on cell migration. |
miRNA overexpression, siRNA knockdown of ARID3B, wound closure and transwell migration assays, phalloidin staining |
Cell structure and function |
Medium |
22307404
|
| 2012 |
In mouse ES cells, Arid3b promotes cell survival (avoiding cell death) while MYCN drives cell cycle progression; epigenetic switching from H3K27me3 to H3K4me3 at the Arid3b and Mycn promoters occurs during somatic reprogramming to iPS cells, and the reverse switch occurs during neural crest differentiation. |
Gene expression analysis in ES cells, siRNA knockdown, ChIP for histone marks (H3K27me3, H3K4me3), reprogramming assay |
Oncogene |
Medium |
22751132
|
| 2014 |
ARID3B increases ovarian tumor burden in vivo, promotes expression of cancer stem cell markers (CD44, LGR5, CD133/PROM1, Notch2), expands the CD133+ cell population, and enhances paclitaxel resistance. |
Intraperitoneal xenograft in nude mice, flow cytometry for CD133+, gene expression profiling of ascites cells, drug resistance assay |
Oncotarget |
High |
25327563
|
| 2014 |
Arid3b is expressed in the myocardium and second heart field progenitors; Arid3b-deficient embryos show cardiac pole shortening, absence of myocardial differentiation, and failed epithelial-to-mesenchymal transition in the atrioventricular canal, with defective second heart field progenitor cell addition to the heart. Downstream targets identified include Bhlhb2 and Lims2. |
Conditional knockout mouse model, DiI labeling of second heart field progenitors, RNA microarray, histological and immunofluorescence analysis |
Development (Cambridge, England) |
High |
25336743
|
| 2015 |
ARID3B directly binds to a defined AT-rich sequence motif at target gene promoters/enhancers (including EGFR enhancer and WNT5A/FZD5 promoter) and induces their expression. ARID3B-driven FZD5 upregulation increases ovarian cancer cell adhesion to extracellular matrix components (collagen IV, fibronectin, vitronectin), with adhesion to collagens II and IV requiring FZD5. |
ChIP followed by microarray (ChIP-chip), quantitative RT-PCR, motif-finding analysis, overexpression and knockdown, adhesion assays |
PloS one |
High |
26121572
|
| 2015 |
ARID3B and ARID3A bind to putative ARID3-binding sites in p53 target genes (PUMA, PIG3, p53) in vitro and in vivo; ARID3B silencing blocks transcriptional activation of pro-apoptotic p53 target genes and blocks apoptosis following DNA damage, while ARID3B (but not ARID3A) overexpression induces apoptosis. |
ChIP (in vivo binding), EMSA (in vitro binding), siRNA knockdown, overexpression, apoptosis assays after DNA damage |
Biochemical and biophysical research communications |
Medium |
26519881
|
| 2016 |
Let-7 miRNA directly represses ARID3B, ARID3A, and importin-9 expression. In the absence of let-7, importin-9 facilitates nuclear import of ARID3A, which forms a complex with ARID3B; the nuclear ARID3B complex recruits histone demethylase KDM4C to reduce H3K9me3 and promotes transcription of stemness factors. ARID3B expression is critical for tumor initiation in let-7-depleted cancer cells. |
Luciferase reporter assay for miRNA targeting, Co-immunoprecipitation of ARID3A/ARID3B/KDM4C complex, ChIP for H3K9me3, nuclear import assay, tumor initiation assay |
Cell reports |
High |
26776511
|
| 2016 |
Conditional deletion of Arid3b in mouse bone marrow decreases common lymphoid progenitors and downstream B cell populations while leaving T cell and myeloid lineages intact, and HSC populations are unperturbed, establishing a specific, cell-autonomous role for Arid3b in B cell development. |
Conditional knockout mouse model, flow cytometry of bone marrow populations |
PloS one |
Medium |
27537840
|
| 2016 |
KSHV lytic switch protein RTA upregulates ARID3B expression; ARID3B relocalizes to viral replication compartments upon lytic reactivation and directly binds A/T-rich elements in the KSHV lytic origin of replication (oriLyt) in a lytic cycle-dependent manner. ARID3B knockdown enhances and overexpression inhibits lytic reactivation. |
SILAC-based quantitative proteomics, siRNA knockdown, overexpression, DNA affinity assay, ChIP for oriLyt binding, immunofluorescence for relocalization |
Journal of virology |
High |
27512077
|
| 2019 |
In human trophoblast cells, ARID3A, ARID3B, and KDM4C form a triprotein complex (ARID3B-complex) that binds to promoter regions of HMGA1, c-MYC, VEGF-A, and WNT1. ARID3B knockout disrupts this complex and decreases expression of these target genes. LIN28/let-7 axis regulates this complex upstream. |
Co-immunoprecipitation, ChIP, CRISPR knockout of ARID3B, LIN28 double knockout and double knockin cell lines, qRT-PCR |
FASEB journal |
High |
31415216
|
| 2020 |
ARID3A and ARID3B regulate nearly identical gene sets in ovarian cancer cells, including stemness/cancer genes (Twist, MYCN, MMP2, GLI2, TIMP3, WNT5B); each induces expression of the other, providing evidence of cooperativity. High-level ARID3B (but not ARID3A) induces cell death. |
Lentiviral transduction with ARID3A-GFP and ARID3B-RFP, RNA-sequencing, expression analysis |
Gene |
Medium |
32061921
|
| 2021 |
ARID3B directly binds to ARID3-binding sites in the promoters of E2F target genes (Cdc2, cyclin E1, p107) in living cells; ARID3B knockdown blocks transcription of these genes and attenuates cell cycle progression. ARID3B overexpression activates cyclin E1 transcription cooperatively with E2F1 and induces cell death. |
ChIP for direct binding, luciferase reporter assays with ARID3-BS mutations, siRNA knockdown, overexpression, cell cycle analysis |
International journal of oncology |
High |
33649863
|
| 2023 |
ARID3B overexpression increases the expression of lncRNAs MALAT1 and NORAD in NSCLC cells, placing ARID3B upstream of these lncRNAs in the pRB-E2F and p53 regulatory pathways. |
Overexpression of ARID3A and ARID3B, qRT-PCR/expression analysis of lncRNAs |
Pathology, research and practice |
Low |
37977034
|
| 2025 |
ARID3B undergoes liquid-liquid phase separation (LLPS) to form granules both in vivo and in vitro; this ARID3B-mediated LLPS recruits coactivators SMAD2/3 and establishes enhancer activity necessary for initiating gene expression related to nonsyndromic cleft lip/palate (nsCL/P). Disruption of LLPS rescues migration, apoptosis, and phenotype deficits in zebrafish models. |
LLPS assays in vitro and in vivo, Co-IP for SMAD2/3 interaction, ChIP for enhancer activity, zebrafish loss-of-function model |
Cell reports |
Medium |
41032419
|
| 2026 |
Phosphorylation of ARID3B at Serine 89 controls its subcellular localization: phosphorylated ARID3B is confined to the nucleus, while unphosphorylated ARID3B can localize to the nucleus, cytoplasm, and membrane. Phospho-mimetic S89D mirrors wild-type ARID3B in transcriptional regulation and chromatin binding, while phospho-dead S89A shows divergent regulation consistent with altered localization. |
Site-directed mutagenesis (S89A, S89D phospho-dead/mimetic constructs), phospho-specific antibody generation, subcellular fractionation, ChIP, functional transcriptional assays in ovarian cancer and glioblastoma cells |
Cells |
High |
41972703
|