| 1996 |
ZBP-89 (ZNF148) is a Krüppel-type C2H2 zinc finger transcription factor that binds specifically to the GC-rich gastrin EGF response element (GGGGCGGGGTGGGGGG) and inhibits both basal and EGF-induced gastrin promoter activity, functioning as a transcriptional repressor that competes with Sp1 at the same DNA element. |
Expression library screening, EMSA, reporter gene assays, in vitro binding assays |
Molecular and cellular biology |
High |
8943318
|
| 1998 |
ZBP-89 binds to the GC box in the ornithine decarboxylase (ODC) promoter and inhibits Sp1-mediated activation of the ODC promoter. ZBP-89 was identified as the protein responsible for NF-ODC1 binding activity: ZBP-89 co-purified with NF-ODC1 activity, anti-ZBP-89 antibodies abolished NF-ODC1 binding, and the binding affinities of ZBP-89 and NF-ODC1 for 12 oligonucleotides were indistinguishable. |
Yeast one-hybrid screening, co-purification, antibody supershift, competitive binding assays, reporter gene assays in Drosophila SL2 cells |
The Journal of biological chemistry |
High |
9685330
|
| 1997 |
ZBP-89 overexpression inhibits cell proliferation: DNA synthesis is inhibited and progression to S phase is blocked in immortalized GH4 and malignant AGS cell lines, at least in part through repression of ornithine decarboxylase promoter activity. |
3H-thymidine incorporation, BrdU labeling, flow cytometry, reporter gene assay (ODC promoter) |
Biochemical and biophysical research communications |
Medium |
9268691
|
| 2000 |
ZBP-89 binds to the human vimentin gene silencer element and heterodimerizes with Sp1 at this element. Co-immunoprecipitation and DNA affinity chromatography showed that Sp1 and ZBP-89 form a complex when bound to the silencer element. |
In vivo DMS footprinting (ligation-mediated PCR), EMSA, UV cross-linking, Southwestern blot, co-immunoprecipitation, DNA affinity chromatography |
The Journal of biological chemistry |
High |
10777586
|
| 2000 |
ZBP-89 directly binds p300 (histone acetyltransferase co-activator) via its N-terminal domain, but does not directly bind Sp1. ZBP-89 co-precipitates with Sp1, and deletion of the ZBP-89 N-terminal domain abolishes both the p300 interaction and butyrate-mediated potentiation of p21(waf1) transcription. ZBP-89 binds to a specific element at -245 to -215 in the p21(waf1) promoter. |
Adenoviral overexpression, co-immunoprecipitation, DNase I footprinting, EMSA, deletion mutagenesis, reporter gene assays |
The Journal of biological chemistry |
High |
10899165
|
| 2000 |
PTRF (polymerase I and transcript-release factor) interacts with the N-terminal zinc-finger domain of BFCOL1/ZBP-89 (identified by yeast two-hybrid), and recombinant PTRF enhances BFCOL1 binding to the mouse proalpha2(I) collagen proximal promoter in vitro. PTRF has a suppressive effect on collagen promoter activity in transfection assays. |
Yeast two-hybrid, recombinant protein binding assay, transient transfection reporter assay |
The Biochemical journal |
Medium |
10727401
|
| 2001 |
ZBP-89 stabilizes p53 protein and enhances p53 transcriptional activity through direct protein-protein interaction. The DNA binding and C-terminal domains of p53 and the zinc finger domain of ZBP-89 mediate the interaction. ZBP-89 retains p53 in the nucleus (shown by heterokaryon assay) without preventing MDM2-p53 interaction. The p53 R273H mutation greatly reduced ZBP-89-mediated stabilization. Elevated ZBP-89 induces growth arrest and apoptosis in human gastrointestinal cell lines. |
Co-immunoprecipitation, domain deletion/point-mutation analysis, heterokaryon nuclear export assay, reporter gene assay, flow cytometry |
Molecular and cellular biology |
High |
11416144
|
| 2003 |
ZBP-89 represses vimentin gene transcription by interacting with the transcriptional activator Sp1 via its N-terminal domain. The glutamine-rich region of Sp1 is required for vimentin activation, while ZBP-89 N-terminus mediates interaction with Sp1 and represses expression. Overexpression of hTAF(II)130 alleviates ZBP-89 repression. |
Transient transfection reporter assay, deletion constructs, overexpression in Schneider (S2) cells |
Nucleic acids research |
Medium |
12771217
|
| 2003 |
ZBP-89 is required for constitutive STAT1 expression. A G-rich element (+171 to +179) in the first intron of STAT1 is critical for STAT1 promoter activity. ZBP-89 binds this element along with Sp1 and Sp3. siRNA-mediated reduction of ZBP-89 attenuated both basal and IFNγ-induced STAT1 expression and diminished caspase-3 and PARP activation. |
Site-directed mutagenesis, EMSA, siRNA knockdown, immunoblotting, reporter assay |
Nucleic acids research |
Medium |
14654702
|
| 2004 |
ZBP-89 induces apoptosis through a p53-independent mechanism requiring JNK activation. ZBP-89 activates JNK via repression of JNK dephosphorylation by downregulating the dual-specificity phosphatase MKP6. ZBP-89-induced apoptosis proceeds through the mitochondrial pathway; JNK inhibition (by peptide inhibitor or dominant-negative JNK2) abrogates apoptosis, while ERK inhibition enhances it. ZBP-89 represses Bcl-xL and Mcl-1 expression. |
Ectopic expression, dominant-negative constructs, kinase inhibitors, protein dephosphorylation assays, oligonucleotide microarray, siRNA silencing, PARP cleavage assays |
Cell death and differentiation |
High |
14963412
|
| 2006 |
ZBP-89 interacts with ATM in a butyrate/HDACi-dependent manner and recruits ATM to GC-rich elements of the p21(waf1) promoter. Co-immunoprecipitation revealed ATM associates with both the N-terminal and DNA binding domains of ZBP-89. Immunodepletion of ZBP-89 prevented recruitment of ATM to the p21(waf1) promoter in vitro. Silencing ZBP-89 blocked HDACi-induced phosphorylation of ATM(Ser1981) and p53(Ser15). |
Co-immunoprecipitation, mass spectrometry, chromatin immunoprecipitation (ChIP), DNA affinity precipitation, siRNA, serial deletion mapping |
Gastroenterology |
High |
16952553
|
| 2007 |
ATM phosphorylates ZBP-89 at Ser202 (within an SQ motif in the zinc finger domain) both in vitro and in vivo. Disruption of the ATM phosphorylation motif (S202A) attenuated ZBP-89's ability to enhance p21(waf1) activation by butyrate and abrogated potentiation of butyrate-induced endogenous p21(waf1) expression. |
In vitro kinase assay, site-directed mutagenesis (S202A), reporter gene assay, immunoblotting |
Biochemical and biophysical research communications |
High |
17560543
|
| 2007 |
ZBP-89 is post-translationally modified by SUMO at two conserved synergy control motifs flanking the DNA binding domain. Sumoylation inhibits functional cooperation (synergy) between ZBP-89 and Sp1 at promoters bearing multiple response elements, and inhibits ZBP-89 synergy with heterologous activators such as glucocorticoid receptor, through a conserved functional surface. Sumoylation does not directly alter ZBP-89's ability to compete with Sp-like factors from individual sites. |
Sumoylation assay, mutagenesis of SUMO acceptor sites, reporter gene assays, promoter analysis |
The Journal of biological chemistry |
High |
17940278
|
| 2008 |
ZBP-89 is a component of multiprotein complexes involving GATA-1 and its cofactor FOG-1 in erythroid and megakaryocyte cells (identified by proteomics). ZBP-89 and GATA-1 co-occupy cis-regulatory elements of certain erythroid and megakaryocyte-specific genes by chromatin immunoprecipitation. Loss of ZBP-89 function in zebrafish and mice demonstrates an in vivo requirement for ZBP-89 in megakaryopoiesis and definitive erythropoiesis but not primitive erythropoiesis. |
Proteomics (GATA-1 interactome), chromatin immunoprecipitation, morpholino knockdown in zebrafish, mouse genetic knockout |
Molecular and cellular biology |
High |
18250154
|
| 2009 |
ZBP-89 suppresses p16(INK4a) expression through an epigenetic mechanism: ZBP-89 recruits HDAC3 (not HDAC4) to the p16(INK4a) promoter, resulting in histone deacetylation. Knockdown of ZBP-89 stimulates cellular senescence reversible by p16 silencing. ZBP-89 and HDAC3 form a complex (shown by co-immunoprecipitation and immunofluorescence co-localization). |
siRNA knockdown, chromatin immunoprecipitation, co-immunoprecipitation, immunofluorescence, beta-galactosidase senescence assay, reporter gene assay |
The FEBS journal |
High |
19583777
|
| 2009 |
ZBP-89 plays a positive role in C2C12 myogenesis: overexpression promotes down-regulation of Pax7 and up-regulation of MRF4 and MyoD, p21, and Rb, while down-regulating cyclinA and cyclinD1. ZBP-89 levels increase during myogenesis, and siRNA-mediated ZBP-89 knockdown delays the myogenic program. ChIP assays confirmed ZBP-89 occupancy at target gene loci. |
Adenoviral overexpression, siRNA knockdown, qRT-PCR, chromatin immunoprecipitation, flow cytometry |
Biochimica et biophysica acta |
Medium |
19232372
|
| 2011 |
ZBP-89 physically associates with histone acetyltransferases p300 and Gcn5/Trrap in erythroid cells, and occupies common chromatin sites with Gcn5 within human globin loci. ZBP-89 knockdown results in reduced Gcn5 occupancy, decreased histone H3 acetylation, and lower globin and erythroid-specific gene expression. |
Co-immunoprecipitation, chromatin immunoprecipitation, lentiviral shRNA knockdown, HDAC inhibitor (valproic acid) rescue |
Blood |
High |
21828133
|
| 2013 |
ZBP-89 is required for butyrate-induced expression of tryptophan hydroxylase 1 (Tph1) gene in intestinal epithelial enterochromaffin cells. Direct binding of ZBP-89 to the mouse Tph1 promoter was demonstrated by DNA affinity precipitation. Conditional intestinal deletion of ZBP-89 (using VillinCre) abolished butyrate-induced 5-HT production and increased susceptibility to S. typhimurium infection. |
Conditional knockout mouse (VillinCre × Zfp148(FL/FL)), microarray, DNA affinity precipitation, infection model |
Gastroenterology |
High |
23395646
|
| 2013 |
ZBP-89 upregulates Bak expression epigenetically by downregulating HDAC3 expression, suppressing HDAC and DNMT activities, maintaining histone acetylation, inhibiting MeCP2 binding, and demethylating CpG islands in the Bak promoter in hepatocellular carcinoma cells. |
Adenoviral overexpression, HDAC activity assay, DNMT activity assay, chromatin immunoprecipitation, bisulfite sequencing, xenograft mouse model |
Biochimica et biophysica acta |
Medium |
23954442
|
| 2014 |
Zfp148 deficiency increases p53 activity and reduces atherosclerosis by causing proliferation arrest of lesional macrophages. The anti-atherosclerotic effect of Zfp148 deficiency depends on p53 (epistasis: Zfp148 heterozygosity had no effect on atherosclerosis in Trp53+/- mice). Macrophages from Zfp148(gt/+) mice showed increased phospho-p53. Bone marrow transplantation established the effector cell is hematopoietic. |
Gene-trap mouse model, bone marrow transplantation, Trp53 epistasis cross, phospho-p53 immunostaining, BrdU proliferation assay |
Circulation research |
High |
25212213
|
| 2014 |
ZBP-89 directly represses PU.1 transcription and activates SCL/Tal1 and GATA-1 transcription in hematopoietic cells. Conditional deletion of ZBP-89 in adult HSPCs causes transient anemia and thrombocytopenia, and a myeloid-to-B lymphoid lineage switch after bone marrow transplantation, associated with upregulation of PU.1 and downregulation of SCL/Tal1 and GATA-1. |
Conditional knockout, bone marrow transplantation, chromatin immunoprecipitation, luciferase reporter assay, siRNA in FDCP-Mix A4 cells, flow cytometry |
Stem cells |
High |
24549639
|
| 2015 |
ZBP-89 attenuates HDAC3 levels by inducing IκB phosphorylation and degradation (independent of NF-κB transcriptional activity), and this process partially depends on Pin1. ZBP-89 forms a complex with IκB. Pin1 knockout cells show significantly less ZBP-89-mediated HDAC3 and IκB reduction. |
Co-immunoprecipitation, inhibitor studies (CAY10576, MG132, SN50), Pin1 knockout cells, siRNA, adenoviral overexpression, xenograft tumor model |
Journal of translational medicine |
Medium |
25623232
|
| 2016 |
ZBP-89 drives a feedforward loop of β-catenin expression in colorectal cancer: ZBP-89 binds a site in the proximal CTNNB1 promoter and induces its transcription (identified by ChIP and EMSA). Reciprocally, β-catenin/TCF signaling induces ZNF148 gene expression (TCF sites identified in ZNF148 promoter by ChIP). Conditional deletion of Zfp148 in APC-deleted mice reduces polyp formation. |
Chromatin immunoprecipitation, EMSA, siRNA, conditional knockout mouse, reporter gene assay |
Cancer research |
High |
27758879
|
| 2017 |
ZNF148 binds allele-specifically to rs36115365-C in the CLPTM1L/TERT locus at chr5p15.33, confirmed by proteomic pulldown and binding of purified recombinant ZNF148. ZNF148 knockdown reduces TERT expression, telomerase activity, and telomere length. |
Proteomic binding assay (allele-specific), recombinant protein binding, siRNA knockdown, telomerase activity assay, telomere length measurement |
Nature communications |
High |
28447668
|
| 2019 |
ZBP-89 negatively regulates liver cancer stem cell (LCSC) self-renewal via inhibition of Notch1 signaling. ZBP-89 localizes in the nucleus with the Notch1 intracellular domain (NICD1) and represses Notch1 signaling by competitively binding NICD1 with MAML1. |
Exogenous expression, sphere formation assay, co-immunoprecipitation, xenograft mouse model, competitive binding assay |
Cancer letters |
Medium |
31874246
|
| 2019 |
Zfp148 and its paralog Zfp281 play functionally redundant roles during erythropoiesis. Zfp281 physically associates with GATA-1, occupies common chromatin sites with GATA-1 and Zfp148, and combined deficiency of Zfp148 and Zfp281 causes a marked erythroid maturation block beyond that seen with either alone. |
Conditional knockout mouse (Zfp148 and Zfp281), co-immunoprecipitation, chromatin immunoprecipitation, flow cytometry, shRNA knockdown |
Blood advances |
High |
31455666
|
| 2019 |
Zfp148 (along with Klf4 and Klf2) activates autophagy-related genes in smooth muscle cells during aortic aneurysm formation. Zfp148 siRNA inhibits activation of autophagy genes (Beclin, LC3). ChIP demonstrates Zfp148 binds autophagy gene loci in smooth muscle cells after elastase treatment. |
siRNA knockdown, chromatin immunoprecipitation, qPCR, elastase/IL-1β treatment in vitro |
Physiological reports |
Medium |
31025534
|
| 2020 |
ZNF148 is phosphorylated by ERK at Ser306, and this phosphorylation causes ZNF148 to bind Forkhead box M1 (FOXM1). ZNF148 and FOXM1 form a complex at promoters, where ZNF148 facilitates histone H3 acetylation and FOXM1-mediated Snail transcription, promoting tumor cell invasion in SDHB-deficient GIST. |
Phosphorylation assay, co-immunoprecipitation, chromatin immunoprecipitation, reporter gene assay, invasion assay |
Cancer science |
Medium |
32060966
|
| 2020 |
Zfp148 deficiency downregulates cell cycle genes in mouse embryonic fibroblasts in a p53-dependent manner, and this proliferation arrest requires increased expression of ARF. ChIP showed Zfp148 binds the ARF promoter, suggesting direct repression of ARF transcription by Zfp148. Zfp148 deficiency preferentially bound to promoters of transcription factors, suggesting indirect effects also activate ARF and p53. |
Chromatin immunoprecipitation (ChIP-seq), mouse embryonic fibroblast proliferation assays, p53/ARF genetic epistasis, CRISPR/siRNA screen data analysis |
Scientific reports |
Medium |
32843651
|
| 2022 |
ZNF148 is a direct transcriptional target repressed by MYC in breast cancer. ZNF148 transcriptionally represses Inhibitor of DNA binding 1 (ID1) and ID3, drivers of cancer stemness. ZNF148 depletion by shRNA and CRISPR/Cas9 increases TNBC cell proliferation and migration. Global transcriptome and chromatin occupancy analyses (ChIP-seq) confirmed ZNF148 occupancy at ID1/ID3 loci. |
shRNA knockdown, CRISPR/Cas9 deletion, RNA-seq, ChIP-seq, chromatin occupancy analysis |
Oncogenesis |
High |
36207293
|
| 2022 |
β cell-specific deletion of Zfp148 (β-Zfp148KO) improves glucose-stimulated Ca2+ oscillations and enhances amino acid-induced Ca2+ influx independent of glycolysis (suggesting enhanced PEP cycling). ZNF148 deletion alters expression of enzymes involved in amino acid and intermediary metabolism (SLC3A2, SLC7A8, GLS, GLS2, PSPH, PHGDH, PSAT1, GOT1, PCK2) and enhances insulin secretion in response to L-glutamine. |
Conditional knockout mouse (β cell-specific Zfp148 deletion), Ca2+ imaging, RNA-seq, proteomics |
JCI insight |
High |
35603790
|
| 2023 |
ZNF148 reduction in human islets and deletion in SC-β cells enhances insulin secretion. ZNF148 represses S100A16 expression, which prevents translocation of annexin A2 from nucleus to cell membrane. ZNF148 deletion de-represses annexin-S100 complexes involved in insulin vesicle trafficking and exocytosis. |
siRNA knockdown in human islets, CRISPR/Cas9 deletion in SC-β cells, transcriptomics, insulin secretion assay, subcellular fractionation |
JCI insight |
High |
37288664
|
| 2023 |
ZNF148 is a transcriptional activator of the wild-type TERT promoter: ZNF148 binds specifically to the WT TERT promoter at position 124 and upregulates TERT transcription and telomerase activity. ZNF148 shows reduced interaction with the -124C>T mutant allele. Identified by proteomics screen for allele-specific binders. |
Proteomics (allele-specific pulldown), reporter gene assay, telomerase activity assay |
Genome research |
Medium |
37918959
|
| 2023 |
Zfp148 and Zfp281 control CD4+ T cell thymic development: they promote intrathymic CD4+ T cell differentiation including expression of the CD4+ lineage-committing factor Thpok. In peripheral TH2 cells, Zfp148 promotes chromatin opening at and expression of TH2 cytokine genes but not of Gata3. Zfp281 physically interacts with Gata3 and is recruited to Gata3 genomic binding sites at Thpok and TH2 cytokine loci. |
Genetic conditional knockout, single-cell RNA-seq, spatial transcriptomics, co-immunoprecipitation (Zfp281-Gata3), ATAC-seq |
Science immunology |
High |
37948511
|
| 2024 |
ZNF148 inhibits HBV replication by binding to the RXRα promoter and downregulating RXRα transcription. Overexpression of ZNF148 decreases HBV RNAs, HBV core DNA, and cccDNA transcriptional activity. RXRα overexpression or mutation of its ZNF148 binding site abolishes ZNF148's suppressive effect on HBV replication. |
Dual-luciferase reporter assay, Northern blot, Southern blot, Western blot, overexpression/siRNA knockdown, rcccDNA mouse model |
Virology journal |
Medium |
38297280
|
| 2025 |
ZNF148 physically binds p63 in head and neck squamous cell carcinoma cells (identified by proteomics, validated by co-immunoprecipitation). p63 and ZNF148 co-occupy a functional transcribed enhancer-derived RNA (eRNA) upstream of the CCND1 gene, controlling its transcription and overexpression of cyclin D1 to promote tumor cell proliferation. This axis is specific to cancer cells and inactive in normal epithelial cells. |
Proteomics (p63 pulldown), co-immunoprecipitation, chromatin occupancy (ChIP-seq), eRNA reporter assay |
Proceedings of the National Academy of Sciences of the United States of America |
High |
40623191
|
| 2026 |
ZFP148 is a transcriptional repressor of cytolytic CD8+ T cell effector differentiation. ZFP148 deficiency increases cytolytic effector CD8+ T cells and reduces exhausted T cells during chronic viral infection. Mechanistically, ZFP148 limits chromatin accessibility at effector-driving transcription factor motifs and directly represses expression of KLF2. Conditional ZFP148 ablation synergizes with PD-1 blockade in tumor models. |
Conditional knockout (Zfp148fl/fl), chronic viral infection model, ATAC-seq, ChIP-seq or CUT&RUN, flow cytometry, syngeneic tumor models, immunotherapy combination |
Nature immunology |
High |
41896465
|