| 2015 |
GATA4 is normally degraded by p62-mediated selective autophagy; during senescence, this autophagic degradation is suppressed, stabilizing GATA4. Stabilized GATA4 then activates NF-κB to initiate the senescence-associated secretory phenotype (SASP). GATA4 activation in this context depends on the DNA damage response kinases ATM and ATR, but not on p53 or p16(INK4a). |
Genetic loss-of-function, protein stability assays, autophagy flux assays, epistasis experiments with ATM/ATR inhibitors and p62 knockdown, NF-κB reporter assays |
Science |
High |
26404840
|
| 2004 |
GATA4 is sumoylated by SUMO-1 at lysine 366, which enhances its transcriptional activity. PIAS1 acts as the E3 SUMO ligase for GATA4 through its RING finger domain. Mutation of K366R reduces GATA4 nuclear occupancy, suggesting SUMO modification also modulates nuclear localization. |
In vitro sumoylation assay, site-directed mutagenesis (K366R), co-transfection reporter assays, subcellular localization analysis |
The Journal of biological chemistry |
High |
15337742
|
| 2010 |
Hdac2 physically interacts with GATA4 and mediates its deacetylation; this interaction is stabilized by the homeodomain factor Hopx. Hopx/Hdac2-mediated deacetylation of GATA4 impairs its ability to transactivate cell cycle genes, restraining cardiomyocyte proliferation during embryonic development. Loss of Hopx and Hdac2 leads to GATA4 hyperacetylation, increased cardiomyocyte proliferation, and upregulation of GATA4 target genes. |
Co-immunoprecipitation, genetic knockout (Hopx and Hdac2 null mice), cardiomyocyte proliferation assays, transactivation assays, interaction domain mapping |
Developmental cell |
High |
20833366
|
| 2016 |
The GATA4-G296S disease-causing missense mutation disrupts physical interaction with TBX5, particularly at cardiac super-enhancers, leading to failure of TBX5 recruitment and dysregulation of cardiac septation genes. The mutation also causes failure of GATA4/TBX5-mediated repression at non-cardiac genes and aberrant chromatin opening at endothelial/endocardial promoters. |
iPS-derived cardiomyocytes from patients, ChIP-seq, ATAC-seq, co-occupancy analysis, functional contractility and calcium handling assays |
Cell |
High |
27984724
|
| 2002 |
GATA4, Nkx2-5, and SRF form higher-order complexes on the cardiac alpha-actin (alphaCA) promoter and synergistically activate its transcription. SRF DNA binding is required to recruit Nkx2-5 and GATA4 to the promoter, and their recruitment enhances SRF DNA-binding affinity. A DNA-binding-defective Nkx2-5 mutant retains coactivation activity in the presence of SRF and GATA4. |
Cotransfection reporter assays in CV1 fibroblasts and Schneider 2 cells, embryonic stem cell endogenous gene induction, DNA-binding mutant analysis, promoter deletion/mutation analysis |
The Journal of biological chemistry |
Medium |
11983708
|
| 2005 |
PKC phosphorylation of GATA4 enhances its DNA-binding activity. STAT-1 physically interacts with GATA4 and synergistically activates ANF and other growth factor-inducible promoters. GATA factors can recruit STAT proteins to target promoters via GATA binding sites, enabling STAT proteins to act as growth factor-inducible coactivators of tissue-specific transcription. |
Co-immunoprecipitation, luciferase reporter assays, EMSA (DNA-binding activity), PKC inhibitor/activator treatments, STAT binding site mutations |
Molecular and cellular biology |
Medium |
16260600
|
| 2014 |
Cyclin D2 (CycD2) physically interacts with GATA4 through a discrete N-terminal activation domain (aa 129-152) and acts as a CDK-independent coactivator, synergistically enhancing GATA-dependent transcription. GATA4 recruits CycD2 to its target promoters. Human congenital heart disease mutations in this domain disrupt CycD2-GATA4 synergy. CycD1 does not potentiate GATA4 activity. |
Co-immunoprecipitation, ChIP, luciferase reporter assays, domain deletion/mutation analysis, Xenopus embryo cardiogenesis assays |
Proceedings of the National Academy of Sciences of the United States of America |
High |
24474767
|
| 2012 |
The N-terminal domain of GATA4 (aa 129–152) is required for cardiogenic activity and for transcriptional synergy with BAF60c. A serine at position 105 (S105, a known MAPK phosphorylation target) is required for GATA4-dependent cardiomyocyte survival and hypertrophy but dispensable for cardiogenesis. S105 is differentially required for transcriptional synergy with SRF but not TBX5 or NKX2.5. |
Domain deletion and point mutagenesis, luciferase reporter assays, cardiomyocyte survival assays, Xenopus embryo cardiogenesis assays |
Molecular and cellular biology |
Medium |
22473995
|
| 2014 |
GATA4 and TBX5 co-localize and physically interact in the developing atria and ventricles (demonstrated by co-immunoprecipitation). Gata4 and Tbx5 cooperatively and directly regulate Cdk4 transcription (by ChIP and transactivation assays), while only Tbx5 activates Cdk2. Loss of myocardial GATA4 combined with Tbx5 heterozygosity (but not endocardial GATA4 loss) causes thin myocardium, reduced cardiomyocyte proliferation, and atrioventricular septation defects. |
Co-immunoprecipitation, co-localization, ChIP, luciferase transactivation assays, conditional Cre-loxP knockout (myocardial vs endocardial lineages) |
Human molecular genetics |
High |
24858909
|
| 2007 |
CHIP (carboxyl terminus of Hsp70-interacting protein), an E3 ubiquitin ligase, promotes GATA4 protein degradation via the ubiquitin-proteasome system. High glucose increases CHIP mRNA expression, leading to increased GATA4 protein degradation; proteasome inhibition reverses this. CHIP knockdown prevents high glucose-induced GATA4 depletion. |
Proteasome inhibitor treatment, CHIP overexpression and siRNA knockdown, UPS reporter assay, western blotting, in vivo diabetic mouse models |
The Journal of biological chemistry |
Medium |
17525155
|
| 2014 |
Caspase-1 cleaves GATA4 both in vivo and in vitro, generating a truncated protein that retains DNA binding ability but lacks transcriptional activation domains and acts as a dominant-negative regulator of GATA4. Caspase-1 is rapidly activated in cardiomyocyte nuclei upon doxorubicin treatment. Inhibition of caspase-1 alone is sufficient to rescue GATA4 degradation and cardiomyocyte death. HSP70 binds directly to GATA4 and masks the caspase recognition motif, protecting it from cleavage. |
In vitro caspase-1 cleavage assay, dominant-negative mutant analysis, cardiomyocyte cell death assays, caspase-1 inhibition, Co-immunoprecipitation (HSP70-GATA4) |
Cell death & disease |
High |
25501827
|
| 2022 |
CHD4 (catalytic subunit of NuRD complex) physically interacts with GATA4, NKX2-5, and TBX5 during embryonic heart development (demonstrated by mass spectrometry and co-IP). GATA4-CHD4 complexes occupy and repress specific cardiac gene targets, including silencers of skeletal muscle (Acta1) and smooth muscle (Myh11) genes in the embryonic heart; deletion of these silencers leads to inappropriate misexpression of these genes in the heart. |
Mass spectrometry, co-immunoprecipitation, ChIP-seq, RNA-seq, in vivo CRISPR/Cas9 silencer deletion |
Genes & development |
High |
35450884
|
| 2022 |
ERRγ interacts physically with GATA4 to cooperatively activate transcription of cardiomyocyte-specific contractile genes (but not metabolic genes, which require PGC-1α independently of GATA4). ERRγ and GATA4 co-occupy cardiac enhancers/super-enhancers genome-wide. A disease-causing GATA4 mutation diminishes PGC-1α/ERR/GATA4 cooperativity. |
Co-immunoprecipitation, ChIP-seq, hiPSC-CM differentiation, luciferase reporter assays, disease mutation functional analysis |
Nature communications |
Medium |
35418170
|
| 2022 |
GATA4 functions as a pioneer transcription factor whose lineage-specific chromatin occupancy is directed by co-expressed non-pioneer transcription factors: NKX2-5 in cardiomyocytes and ETS1 in endocardial cells. Both NKX2-5 and ETS1 physically interact with GATA4 (by Co-IP) and re-direct its pioneer binding genome-wide, augmenting chromatin opening. ETS1 displays greater potency than NKX2-5 as a pioneer partner. GATA4 and ETS1 cooperatively stimulate endothelial cell enhancer activity. |
Lineage-specific Cre-activated GATA4 biotinylation followed by ChIP-seq, ATAC-seq, co-immunoprecipitation, scRNA-seq, luciferase reporter assays, conditional endothelial Gata4 knockout |
Circulation research |
High |
36263775
|
| 2022 |
GATA4 forms a homomultimer; residues 308–326 are necessary for multimerization. Acetylation of GATA4 by p300 induces its multimerization and activates DNA-binding activity. Suppression of GATA4 multimerization represses GATA4/p300-induced gene transcription and inhibits phenylephrine-induced hypertrophic response in cardiomyocytes without reducing acetylation. |
Protein multimerization assays, domain mutagenesis, acetylation assays, DNA-binding activity measurement, cardiomyocyte hypertrophy assays |
International journal of biological sciences |
Medium |
35173540
|
| 2017 |
GATA4 controls liver sinusoidal endothelial cell (LSEC) specification; its deletion causes transformation of discontinuous liver sinusoids into continuous capillaries, characterized by ectopic basement membrane deposition, continuous EC layer formation, and increased VE-cadherin expression. Ectopic GATA4 expression in continuous ECs downregulates continuous EC transcripts and upregulates LSEC-associated genes. |
LSEC-specific conditional Gata4 knockout (Cre-loxP), GATA4 overexpression in cultured ECs, histology, electron microscopy, transcriptomic profiling |
The Journal of clinical investigation |
High |
28218627
|
| 2020 |
In adult LSECs, GATA4 loss triggers a profibrotic angiocrine switch involving de novo endothelial expression of PDGFB (a hepatic stellate cell-activating cytokine). MYC activation mediates ectopic Pdgfb expression by increasing chromatin accessibility at the Pdgfb locus, downstream of GATA4 loss. GATA4 thus protects against perisinusoidal liver fibrosis by repressing MYC activation and profibrotic angiocrine signaling at the chromatin level. |
LSEC-specific adult Gata4 conditional KO, ChIP-seq, ATAC-seq, gene expression profiling, dietary and chemical fibrosis models, human scRNA-seq datasets |
Journal of hepatology |
High |
32916216
|
| 2021 |
GATA4 directly represses EPAS1 (encoding HIF2α) transcription in hepatic stellate cells. Overexpression of GATA4 in hepatic stellate cells promotes liver fibrosis regression (deactivation); lack of GATA4 in adult mice causes hepatic stellate cell activation and liver fibrosis. Stabilization of HIF2α in hepatic stellate cells leads to liver fibrosis. |
Conditional Gata4 knockout in mice, adenoviral Gata4 overexpression, CCl4 fibrosis model, ChIP for GATA4 at EPAS1 promoter, HIF2α stabilization experiments |
JCI insight |
Medium |
34699385
|
| 2017 |
GATA4 directly activates a cis-regulatory element at Gli1 in vitro (luciferase assay) and occupies this element in vivo (ChIP), placing Gata4 directly upstream of Hedgehog signaling components in the second heart field. Gata4 haploinsufficiency in the SHF causes Hedgehog signaling defects; constitutive SHF Hh signaling activation rescues AVSDs in Gata4 SHF-specific heterozygotes. A parallel cell-cycle defect (via PTEN/cell cycle) acts independently of Hh. |
SHF-specific conditional Gata4 heterozygote mice, luciferase reporter assay (Gli1 cis-element), ChIP (Gata4 at Gli1 element), Pten knockdown rescue, constitutive Smo activation rescue |
Proceedings of the National Academy of Sciences of the United States of America |
High |
28167794
|
| 2019 |
Gata4 directly represses Gata6 transcription via repressive cis-regulatory sites within 1 kb upstream of the Gata6 TSS, identified by ChIP-qPCR and luciferase reporter assay. In Gata4 haploinsufficient SHF cells, enhanced Gata6 expression is observed, consistent with GATA4-mediated repression of Gata6. |
ChIP-qPCR, luciferase reporter assay, Gata4 haploinsufficient mouse model with SHF gene expression analysis |
PLoS genetics |
Medium |
31120883
|
| 2011 |
GATA4 is a pioneer factor for estrogen receptor alpha (ERα) in osteoblasts: maximal GATA4 binding to chromatin precedes ERα binding, GATA4 is required for H3K4 dimethylation at ERα binding sites, and GATA4 knockdown reduces ERα recruitment to DNA. GATA4 and ERα co-occupy chromatin near osteoblast-specific genes controlling differentiation. |
ChIP-seq (GATA4 and ERα), ChIP for H3K4me2, GATA4 knockdown with ERα recruitment analysis |
Molecular endocrinology |
Medium |
21566084
|
| 2017 |
GATA4 directly binds to two Runx2 promoters and an enhancer region (by ChIP). GATA4 binding maintains open chromatin (H3K4me2, H3K27ac marks) at the Runx2 locus; GATA4 knockdown reduces open chromatin marks and increases H3K27me2 (closed chromatin mark) at Runx2, reducing Runx2 expression and osteoblast mineralization in vitro and in vivo. |
ChIP (GATA4, H3K4me2, H3K27ac, H3K27me2), DNase I hypersensitivity assay, Gata4 conditional KO (Col1a1-Cre), osteoblast differentiation assays |
JBMR plus |
Medium |
30035248
|
| 2003 |
GATA-4 binds to the erythropoietin (EPO) gene promoter with the most prominent binding activity among GATA factors expressed in hepatocytes (by EMSA and in vivo ChIP). RNAi-mediated inhibition of GATA-4 expression dramatically reduces Epo gene transcription in Hep3B hepatoma cells. |
EMSA, chromatin immunoprecipitation (in vivo), siRNA knockdown with RT-PCR quantification of Epo transcription |
The Journal of biological chemistry |
Medium |
14583613
|
| 2011 |
GATA4 regulates Sertoli cell function including blood-testis barrier (BTB) integrity and lactate metabolism. GATA4 depletion in Sertoli cells alters expression of tight/adherens junction genes (Tjp1, Cldn12, Vcl, Tnc, Csk) and extracellular matrix genes, reduces tight junction protein-1 levels, disrupts junctional complexes, decreases epithelial membrane resistance, and impairs lactate production. |
Conditional Sertoli cell Gata4 KO (Amhr2-Cre), siRNA knockdown in TM4 cells, microarray, qRT-PCR, western blotting, immunocytochemistry, metabolomic profiling |
Endocrinology |
Medium |
26974005
|
| 2020 |
Parkin (E3 ubiquitin ligase) directly interacts with GATA4 (by co-immunoprecipitation) and promotes its ubiquitination. Parkin overexpression decreases GATA4 protein (but not mRNA) in the kidney; Parkin-mediated GATA4 degradation limits downstream GATA4/GAS1 signaling and reduces premature senescence, inflammation, and fibrosis in diabetic nephropathy. |
Co-immunoprecipitation, Parkin overexpression and knockout in mice, GATA4 ubiquitination assay, high-glucose cell culture model |
FASEB journal |
Medium |
32436607
|
| 2009 |
GATA4 inhibits doxorubicin-induced autophagy in cardiomyocytes as a mechanism of cardioprotection. GATA4 overexpression upregulates Bcl2 expression and suppresses DOX-induced activation of autophagy-related genes. GATA4 depletion triggers autophagy that renders cardiomyocytes more sensitive to DOX toxicity. |
LC3-II autophagic flux assays, bafilomycin A1 treatment, GATA4 siRNA and adenoviral overexpression, cell death assays, Bcl2 mRNA/protein analysis |
The Journal of biological chemistry |
Medium |
19901028
|
| 2015 |
Notch downstream effectors HEY1, HEY2, and HEYL differentially regulate GATA4-dependent promoters (STAR protein, P450 aromatase, 3β-HSD), and HEY/HES binding sites are present in these promoters. Notch signaling thus represses GATA4-induced steroidogenic gene expression. |
Constitutively active Notch constructs, Notch inhibitor treatment of follicles and Leydig cells, luciferase reporter assays with GATA4-dependent promoters, HEY/HES binding site analysis |
Reproduction |
Low |
26183893
|
| 2022 |
Nuclear PKM2 (S37P-PKM2) in cardiomyocytes interacts with GATA4, GATA6, and P53. Nuclear PKM2 prevents caspase-1-dependent cleavage and degradation of GATA4/6. TRIM35 (E3 ubiquitin ligase) promotes ubiquitination-dependent loss of nuclear PKM2, which in turn destabilizes GATA4/6 and permits P53 accumulation, leading to cardiac dysfunction. |
Co-immunoprecipitation (nuclear PKM2 with GATA4/6), cardiomyocyte-specific PKM2 and TRIM35 transgenic/KO mice, caspase-1 cleavage assays, cardiac function measurements |
Science translational medicine |
Medium |
36322626
|
| 2018 |
GATA4 directly binds the VEGFA and VEGFC promoters and enhances their transcription in fibroblast-like synoviocytes (FLS). GATA4 loss-of-function attenuates VEGF secretion from RA FLS, reduces endothelial cell proliferation, migration, and tube formation, and suppresses collagen-induced arthritis development and RA-augmented angiogenesis in vivo. |
ChIP (GATA4 at VEGFA/VEGFC promoters), GATA4 siRNA knockdown, endothelial tube formation and migration assays, CIA mouse model |
Cell death & disease |
Medium |
29717129
|
| 2011 |
GATA4 (together with Sp1) directly regulates transcription of the erythropoietin receptor (EpoR) in cardiomyocytes. GATA4 and Sp1 bind the EpoR 5' flanking region (by EMSA and ChIP). Forced GATA4 expression induces EpoR mRNA; GATA4 knockdown (in vitro and in an inducible shRNA transgenic mouse) reduces EpoR transcription. The Sp1 site is essential for GATA4-mediated EpoR transcription. |
EMSA, ChIP, luciferase reporter assays, siRNA knockdown, adenoviral GATA4 overexpression, inducible shRNA transgenic mice |
Journal of cellular and molecular medicine |
Medium |
21029371
|
| 2019 |
Gata4 directly represses EPAS1 (HIF2α) in hepatic stellate cells (by ChIP). GATA4 overexpression in hepatic stellate cells induces fibrosis regression; GATA4 absence causes hepatic stellate cell activation and fibrosis. |
ChIP, adenoviral Gata4 overexpression, conditional Gata4 KO in mice, CCl4 fibrosis model |
JCI insight |
Medium |
34699385
|
| 2023 |
Intestinal epithelial GATA4 controls bacterial colonization and inflammatory immunity in the proximal small intestine by regulating retinol metabolism and luminal IgA. Loss of jejunal GATA4 permits pathogenic inflammatory responses (including segmented filamentous bacteria-driven IL-17 immunity) that disrupt barrier function and increase mortality upon infection. |
Intestinal epithelium-specific Gata4 conditional KO, germ-free mouse colonization experiments, gene expression analysis, IgA measurement, retinol metabolism analysis, in vivo infection model |
Immunity |
Medium |
36630917
|
| 2011 |
GATA4 regulates Sertoli cell function in adult mice; conditional deletion of Gata4 in Sertoli cells (Amhr2-Cre) causes age-dependent testicular atrophy, impaired spermatogenesis, decreased sperm quantity and motility, increased blood-testis barrier permeability, and loss of fertility. |
Conditional Sertoli cell Gata4 knockout (Amhr2-Cre/loxP), histology, RT-PCR, sperm analysis, fertility testing |
Molecular and cellular endocrinology |
Medium |
21172404
|
| 2011 |
GATA4 physically interacts with Sp1 (demonstrated by GST pull-down assay) and synergistically activates the ANF promoter. ERK1/2-mediated phosphorylation of GATA4 enhances the affinity between GATA4 and Sp1. Both GATA4 and Sp1 are recruited to the ANF promoter during phenylephrine-induced hypertrophy (by ChIP). Sp3 antagonizes this interaction and represses transcriptional synergy. |
GST pull-down, ChIP, luciferase reporter assays, hypertrophic cardiomyocyte model (phenylephrine), ERK inhibitor treatment |
Journal of cellular and molecular medicine |
Medium |
20874724
|
| 2016 |
GATA4 and GATA6 repress transcription through the sonic hedgehog endoderm-specific enhancer MACS1 in the pancreatic endoderm; GATA-binding sites within MACS1 are necessary for this repressive activity. Loss of both Gata4 and Gata6 in the pancreas leads to ectopic hedgehog pathway activation and conversion of pancreatic fates into intestinal or stomach lineages. |
Conditional Gata4/Gata6 double KO (Pdx1-Cre), luciferase reporter assays (MACS1 enhancer with GATA-site mutations), in situ hybridization, immunostaining for lineage markers |
Development |
Medium |
26932670
|
| 2021 |
Rubicon, a negative regulator of autophagy, prevents autophagic degradation of GATA4 in Sertoli cells. Rubicon-null Sertoli cells show elevated autophagy flux and reduced GATA4 protein levels, causing spermatogenesis defects. Androgens regulate Rubicon levels in testis, thereby indirectly controlling GATA4 protein stability through autophagic degradation. |
Rubicon systemic and Sertoli cell-specific KO mice, autophagy flux assays, GATA4 protein quantification, androgen antagonist treatment |
PLoS genetics |
Medium |
34351902
|
| 2019 |
Kindlin-2 suppresses GATA4 expression by binding to the GATA4 promoter and recruiting histone methyltransferase SUV39H1, which deposits repressive H3K9 di- and tri-methylation marks. Cardiac-specific Kindlin-2 deletion in mice causes hypertrophic cardiomyopathy with markedly elevated GATA4 expression. |
ChIP (Kindlin-2, SUV39H1, H3K9me2/3 at GATA4 promoter), co-immunoprecipitation (Kindlin-2/SUV39H1), cardiac-specific Kindlin-2 KO mice, isoproterenol treatment |
Cell death & disease |
Medium |
31767831
|
| 2016 |
GATA4 and GATA6 occupy chromatin near the Dll1 (Notch ligand) transcription start site (by ChIP), suggesting direct regulation of Dll1. Double knockout of GATA4 and GATA6 in intestinal epithelium reduces Notch signaling (decreased Dll1 and Olfm4 expression), increases goblet cell differentiation, and increases proliferation. |
Double conditional KO (Villin-Cre), ChIP for GATA4 at Dll1 TSS, cell-type marker analysis, Notch pathway gene expression |
Developmental biology |
Medium |
24929016
|
| 2016 |
GATA4 binds chromatin near Cyclin D2 (Ccnd2), Cdk6, and Frizzled 5 (Fzd5) genes in developing intestinal epithelium (by ChIP), and their transcripts are reduced in GATA4-deficient intestinal epithelium, placing them as direct GATA4 targets controlling early intestinal epithelial proliferation. |
ChIP (GATA4 at Ccnd2, Cdk6, Fzd5), SHH-Cre Gata4 conditional KO embryos, proliferation assays, qRT-PCR |
Cellular and molecular gastroenterology and hepatology |
Medium |
27066525
|
| 2012 |
The Gata4 G295S mutation functions as a hypomorph in vivo: it can activate downstream targets in endoderm but not in the developing heart. It causes cardiomyocyte proliferation deficits and decreased cardiac expression of CCND2 (a direct Gata4 target and cyclin family member). In vitro, the mutant protein has reduced DNA-binding affinity and transcriptional activity and abolishes physical interaction with TBX5. |
Gata4 G295S knock-in mice, compound mutants with Gata4 null allele, cardiomyocyte proliferation analysis, gene expression (Ccnd2), in vitro transcriptional and DNA-binding assays |
PLoS genetics |
Medium |
22589735
|
| 2022 |
A GATA4-dependent secretory program (including chemokine CCL2) promotes non-cell-autonomous tumor suppression by recruiting cytotoxic CD8 T cells. GATA4-dependent tumor suppression in mice requires cytotoxic CD8 T cells and is partially dependent on CCL2. |
Gata4 loss-of-function and overexpression mouse tumor models, CD8 T cell depletion, CCL2 neutralization, tumor growth assays |
Nature communications |
Medium |
35017504
|
| 2017 |
GATA4 directly binds the GNAI3 promoter in dental papilla mesenchymal cells (confirmed by dual-luciferase and ChIP assays both in vitro and in vivo). GATA4 deletion reduces GNAI3 expression, and GNAI3 knockdown impairs odonto/osteogenic differentiation of stem cells of dental apical papilla. |
Wnt1-Cre Gata4 conditional KO mice, ChIP, dual-luciferase assay, GNAI3 siRNA knockdown, stem cell differentiation assays |
Scientific reports |
Medium |
28484278
|
| 2011 |
GATA-4 binds to a GATA site in the hepcidin (HAMP) promoter (by EMSA and gel retardation), and mutation of this site impairs hepcidin promoter activity. GATA-4 co-transfection enhances hepcidin promoter activity, and siRNA-mediated GATA4 knockdown reduces endogenous hepcidin expression in HepG2 cells. The GATA-binding site is also required for IL-6-induced hepcidin expression but not BMP-6 response. |
EMSA, luciferase reporter assays with GATA-site mutations, GATA4 siRNA knockdown, co-transfection in hepatoma cells |
The Biochemical journal |
Low |
21609320
|
| 2018 |
Meox1 activates Gata4 transcription directly; Meox1 occupies the Gata4 promoter (demonstrated by ChIP) and activates Gata4 promoter activity (luciferase assay). Meox1-driven pathological hypertrophy is mediated through downstream Gata4 activation; Gata4 knockdown abolishes Meox1-induced hypertrophy. |
ChIP (Meox1 at Gata4 promoter), luciferase reporter assay, Gata4 siRNA rescue, Meox1 overexpression and knockdown mouse models (TAC, FHCM) |
Cardiovascular research |
Medium |
29155983
|
| 2023 |
SIRT7 (class III histone deacetylase) promotes deacetylation of GATA4, inhibiting its transcriptional activity. GATA4 normally induces ovarian cancer cell senescence by inhibiting Wnt signaling; SIRT7-mediated deacetylation of GATA4 suppresses this senescence-inducing activity and promotes tumor progression. |
Co-immunoprecipitation (SIRT7-GATA4), gain/loss-of-function experiments in OC cell lines, luciferase reporter assays, nude mouse xenograft model |
Gynecologic oncology |
Low |
36804620
|