{"gene":"EGR3","run_date":"2026-04-28T17:46:03","timeline":{"discoveries":[{"year":1998,"finding":"Egr3 is a zinc-finger transcription factor essential for muscle spindle development; Egr3-deficient mice generated by gene targeting completely lack muscle spindles, demonstrating that Egr3-mediated transcription in type I myotubes is required for intrafusal fiber differentiation and spindle morphogenesis.","method":"Gene targeting (knockout mouse), histology, in situ expression analysis","journal":"Nature genetics","confidence":"High","confidence_rationale":"Tier 2 — clean KO with specific developmental phenotype, replicated and foundational","pmids":["9731539"],"is_preprint":false},{"year":2001,"finding":"Egr3 expression in developing myotubes is induced by Ia afferent innervation and controls intrafusal fiber differentiation; following nerve transection Egr3 expression dissipates, and in its absence newborn spindles fail to induce slow-developmental myosin heavy chain and subsequently disassemble after sensory/motor innervation withdraws.","method":"Knockout mouse analysis, nerve transection, immunohistochemistry, in situ hybridization","journal":"Developmental biology","confidence":"High","confidence_rationale":"Tier 2 — multiple orthogonal methods in KO model with defined cellular phenotype","pmids":["11401400"],"is_preprint":false},{"year":2005,"finding":"Egr3 (and Egr2) act as negative regulators of T cell activation by promoting expression of the E3 ubiquitin ligase Cbl-b; Egr3-deficient T cells have lower Cbl-b expression and are resistant to peptide-induced tolerance in vivo.","method":"Overexpression, knockout mouse, in vivo tolerance assay, microarray","journal":"Nature immunology","confidence":"High","confidence_rationale":"Tier 2 — KO plus overexpression with defined molecular and in vivo phenotype, highly cited","pmids":["15834410"],"is_preprint":false},{"year":2005,"finding":"Egr3 directly up-regulates GABRA4 promoter activity and endogenous GABA-A receptor alpha4 subunit levels in hippocampal neurons; Egr3 binds to the GABRA4 promoter in dentate granule cells following status epilepticus, and Egr3 knockout mice have ~50% less GABRA4 mRNA in hippocampus.","method":"Transfection/reporter assay in primary neurons, chromatin immunoprecipitation (ChIP), AAV-driven reporter in vivo, knockout mouse","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 1-2 — in vitro promoter assay + ChIP + KO mouse with quantitative mRNA readout","pmids":["16091474"],"is_preprint":false},{"year":2006,"finding":"Egr3 is transiently induced by pre-TCR signals in thymocytes and promotes proliferation by reducing E protein-dependent RORγt expression and by interacting with RORγt to prevent induction of RORγt target genes; this delays RORγt-mediated gene rearrangement and enables temporal separation of proliferation from VDJ recombination.","method":"Overexpression, genetic epistasis, reporter assays, co-immunoprecipitation (interaction with RORγt)","journal":"Immunity","confidence":"High","confidence_rationale":"Tier 2 — epistasis plus protein interaction plus functional phenotype in primary thymocytes","pmids":["16782036"],"is_preprint":false},{"year":1998,"finding":"EGR3 gene expression in T cells is controlled by a 27-bp promoter element that interacts with NF-ATp and NF-ATc; overexpression of NF-ATp (but not NF-ATc) in fibroblasts restores the two-signal, cyclosporin A-sensitive EGR3 induction, explaining the lymphoid-cell specificity of CsA action on EGR3.","method":"Promoter deletion analysis, reporter assay, NF-AT overexpression in fibroblasts","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1-2 — reconstituted NF-AT-dependent promoter activity with mutagenesis-equivalent deletion mapping","pmids":["9819402"],"is_preprint":false},{"year":2007,"finding":"Egr3 is essential for normal hippocampal LTP (early- and late-phase) and for both short-term and long-term hippocampus- and amygdala-dependent learning and memory; these deficits are independent of Egr1, whose protein levels are unaltered in Egr3-deficient brain regions.","method":"Knockout mouse, electrophysiology (LTP), behavioral memory tasks (fear conditioning, spatial learning)","journal":"Molecular and cellular neurosciences","confidence":"High","confidence_rationale":"Tier 2 — KO with multiple orthogonal behavioral and electrophysiological readouts","pmids":["17350282"],"is_preprint":false},{"year":2008,"finding":"Egr3 is induced by NGF signaling in sympathetic neurons during development and is required for normal terminal axon extension, branching, and target tissue innervation, but not for sympathetic neuron survival; Egr3-deficient mice display profound physiological dysautonomia.","method":"Knockout mouse, immunohistochemistry, physiological assessment of autonomic function","journal":"Development (Cambridge, England)","confidence":"High","confidence_rationale":"Tier 2 — KO with specific neurodevelopmental and physiological phenotype","pmids":["18653557"],"is_preprint":false},{"year":2011,"finding":"BDNF-mediated upregulation of NMDA receptor NR1 subunit transcription in cortical neurons requires Egr3 (together with CREB) binding to the NR1 core promoter; BDNF activates this via the MAPK pathway through TrkB, uncovering a feed-forward gene regulatory network.","method":"Promoter reporter assay, ChIP, pharmacological pathway dissection in cortical neurons","journal":"Journal of neurochemistry","confidence":"High","confidence_rationale":"Tier 1-2 — promoter assay + ChIP + pharmacological dissection in primary neurons","pmids":["22035109"],"is_preprint":false},{"year":2013,"finding":"Egr3 has a sympathetic neuron-autonomous role: cell-specific ablation demonstrates that Egr3 within sympathetic neurons is required for normal dendrite morphology and terminal axon branching; microarray identified downstream target genes involved in axonogenesis and dendritogenesis.","method":"Conditional knockout, microarray, genetic axon/dendrite labeling, neurite outgrowth assay in isolated neurons","journal":"The Journal of neuroscience","confidence":"High","confidence_rationale":"Tier 2 — conditional KO plus isolated neuron experiments plus target gene identification","pmids":["23467373"],"is_preprint":false},{"year":2015,"finding":"Egr3 functions cell-autonomously in skeletal muscle for intrafusal fiber differentiation and fusimotor innervation homeostasis; cell-specific ablation shows Egr3-deficient myotubes are contacted by Ia afferents normally but fail to express characteristic MyHC isoforms and fail to acquire GDNF expression needed for fusimotor neuron survival.","method":"Cell-type-specific conditional knockout, genetic fate tracing, immunofluorescence, in situ hybridization","journal":"The Journal of neuroscience","confidence":"High","confidence_rationale":"Tier 2 — conditional KO plus genetic tracing with defined molecular and cellular phenotype","pmids":["25855173"],"is_preprint":false},{"year":2015,"finding":"Egr3 has opposing roles in nucleus accumbens D1- vs. D2-MSNs in response to cocaine: repeated cocaine increases Egr3 in D1-MSNs (enhancing reward/locomotor responses) and decreases it in D2-MSNs (suppressing these behaviors); Egr3 binding to promoters of Camk2α, CREB, FosB, Nr4a2, Sirt1 increases in D1-MSNs while binding to G9a and Dnmt3a promoters decreases.","method":"RiboTag ribosome-associated transcriptomics, Cre-inducible AAV overexpression/knockdown, ChIP in cell-type-specific contexts","journal":"The Journal of neuroscience","confidence":"High","confidence_rationale":"Tier 2 — multiple orthogonal methods (RiboTag, AAV-Cre, ChIP) with cell-type-specific resolution","pmids":["25995477"],"is_preprint":false},{"year":2016,"finding":"Egr2 and Egr3 expressed in T regulatory cells cooperatively prevent systemic autoimmunity by supporting TGF-β3 secretion through transcriptional maintenance of Ltbp3 (latent TGF-β binding protein 3) expression in CD4+CD25-LAG3+ cells.","method":"T cell-specific double knockout mouse, adoptive transfer, TGF-β3-expressing vector rescue, gene expression analysis","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 — double KO plus rescue experiments identifying molecular mechanism (Ltbp3/TGF-β3 axis)","pmids":["27911796"],"is_preprint":false},{"year":2004,"finding":"EGR3 is a direct target of estrogen receptor alpha (ERα) in breast cancer cells; estradiol rapidly induces EGR3 mRNA (blocked by ICI 182,780 and cycloheximide-insensitive), and EGR3 in turn transcriptionally activates Nab2 and FasL promoters.","method":"Northern blot, pharmacological inhibitors (ICI 182,780, cycloheximide), stable transfection with inducible EGR3, reporter assay, microarray","journal":"Journal of molecular endocrinology","confidence":"Medium","confidence_rationale":"Tier 2 — multiple methods in one lab but no ChIP confirming ERα direct binding to EGR3 promoter","pmids":["15171706"],"is_preprint":false},{"year":2018,"finding":"Egr3 is required for electroconvulsive stimulation-induced Bdnf expression in the hippocampus; Egr3-/- mice fail to upregulate Bdnf (exons IV and VI) after ECS, and EGR3 binding sites are present in the Bdnf promoter, suggesting direct transcriptional regulation.","method":"Knockout mouse, expression microarray, qRT-PCR, in situ hybridization, Bdnf promoter analysis","journal":"Frontiers in behavioral neuroscience","confidence":"Medium","confidence_rationale":"Tier 2 — KO plus microarray plus in situ hybridization, but no ChIP confirming direct EGR3 binding in vivo","pmids":["29867393"],"is_preprint":false},{"year":2015,"finding":"Egr3 is required for activity-dependent induction of Htr2a (serotonin 2A receptor) mRNA: sleep deprivation fails to induce Htr2a expression in Egr3-/- mice.","method":"Knockout mouse, sleep deprivation paradigm, qRT-PCR","journal":"ACS chemical neuroscience","confidence":"Medium","confidence_rationale":"Tier 2 — KO with defined molecular readout, replicated in 2022 paper with ChIP","pmids":["25857407"],"is_preprint":false},{"year":2022,"finding":"EGR3 protein directly binds to the Htr2a promoter in mouse frontal cortex in vivo and drives expression via two EGR3 binding sites in the Htr2a promoter; sleep deprivation upregulates 5-HT2AR levels in an Egr3-dependent manner.","method":"Chromatin immunoprecipitation (ChIP) in vivo, in vitro reporter assay, knockout mouse, pharmacological sleep deprivation","journal":"Molecular psychiatry","confidence":"High","confidence_rationale":"Tier 1-2 — in vivo ChIP plus reporter mutagenesis plus KO mouse, orthogonal methods","pmids":["35001075"],"is_preprint":false},{"year":2020,"finding":"EGR3 transcriptionally activates ZFP36, GADD45B, and SOCS3 by directly binding their promoter regions, thereby inhibiting EMT and suppressing bone metastasis in prostate cancer cells.","method":"ChIP, overexpression/knockdown, in vitro migration/invasion assays, in vivo mouse metastasis model","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 — ChIP plus in vitro and in vivo functional assays in single lab","pmids":["32796959"],"is_preprint":false},{"year":2020,"finding":"EGR3 directly binds the promoter region of RELN and activates its expression; EGR3 overexpression reduces neurite outgrowth in SH-SY5Y cells, which is partially reversed by RELN knockdown, placing EGR3 upstream of Reelin signaling in neurite outgrowth.","method":"ChIP, luciferase reporter assay, overexpression/knockdown, neurite outgrowth assay, DNA microarray","journal":"Journal of neurochemistry","confidence":"Medium","confidence_rationale":"Tier 1-2 — ChIP plus reporter assay plus functional rescue, single lab","pmids":["33113163"],"is_preprint":false},{"year":2021,"finding":"Cocaine enhances Egr3 binding to nuclear genes involved in mitochondrial function (including PGC1α and Drp1 promoters) in NAc D1-MSNs; blunting Egr3 in D1-MSNs blocks cocaine-enhanced small-sized mitochondria formation, demonstrating Egr3 regulates cocaine-induced mitochondrial morphological adaptations.","method":"ChIP, AAV-Cre knockdown, mitochondrial morphology analysis, mRNA quantification in cell-type-specific fractions","journal":"Molecular brain","confidence":"Medium","confidence_rationale":"Tier 2 — ChIP plus cell-type-specific KD with morphological readout, single lab","pmids":["34187517"],"is_preprint":false},{"year":2021,"finding":"EGR3 directly binds HDAC6 promoter sequences and is necessary for HDAC6 upregulation in antigen-stimulated mast cells; the EGR3-HDAC6-IL-27 axis mediates allergic inflammation in vitro and in vivo; NF-κB p65 directly regulates EGR3 expression, and miR-182-5p acts as a direct negative regulator of EGR3 (confirmed by luciferase assay).","method":"ChIP (EGR3 on HDAC6 promoter), luciferase reporter assay (miR-182-5p targeting), knockdown/overexpression, passive anaphylaxis models in vivo","journal":"Frontiers in immunology","confidence":"Medium","confidence_rationale":"Tier 2 — ChIP plus reporter assay plus in vivo models, single lab","pmids":["34234781"],"is_preprint":false},{"year":2016,"finding":"Egr3 promotes C2C12 myoblast proliferation via NF-κB transcriptional activity; shRNA-mediated Egr3 inhibition reduces proliferation and increases apoptosis (caspase-3/7 and PARP activation), partially rescued by pan-caspase inhibitor Z-VAD-FMK.","method":"shRNA knockdown, flow cytometry (annexin V), western blot (caspase-3/7, PARP), NF-κB reporter assay","journal":"Journal of cellular physiology","confidence":"Medium","confidence_rationale":"Tier 2 — knockdown with multiple readouts and partial rescue, single lab","pmids":["27576048"],"is_preprint":false},{"year":2014,"finding":"Egr3 protein co-localizes with the meiotic spindle and cytosolic microtubule organizing centers (MTOCs) in mouse oocytes, accumulating around γ-tubulin; nocodazole-induced microtubule depolymerization disrupts this localization; an in vitro microtubule interaction assay shows Egr3 does not directly interact with polymerized microtubules, suggesting an indirect association.","method":"Immunofluorescence co-localization, nocodazole treatment, in vitro microtubule binding assay, confocal microscopy","journal":"PloS one","confidence":"Medium","confidence_rationale":"Tier 3 — localization with functional perturbation but no direct functional consequence shown","pmids":["24722338"],"is_preprint":false},{"year":2020,"finding":"miR-27a-5p inhibits cardiac fibrosis by suppressing EGR3, a pro-fibrotic transcription factor; miR-27a-5p targeting of EGR3 was confirmed by reporter assay, and EGR3 promotes TGF-β signaling and pro-fibrotic protein secretion in cardiac fibroblasts.","method":"Luciferase reporter assay (miR-27a-5p targeting EGR3 3'UTR), in vivo TAC model with miR-27a knockout/knockdown, in vitro TGF-β signaling assays","journal":"Journal of cellular and molecular medicine","confidence":"Medium","confidence_rationale":"Tier 2 — reporter assay plus in vivo and in vitro functional studies, single lab","pmids":["33215816"],"is_preprint":false},{"year":2024,"finding":"EGR3 is a mechanosensitive transcription factor in endothelial cells required for cardiac valve formation; egr3-null zebrafish completely lack valve leaflets; mechanical forces upregulate egr3 expression in zebrafish heart and porcine valvular endothelial cells; EGR3 acts cell-autonomously in endothelial cells and its effector includes nuclear receptor Nr4a2b.","method":"Zebrafish knockout (null mutant), tissue-specific gain/loss-of-function, mechanical force manipulation, porcine endothelial cell culture, genetic epistasis with Nr4a2b","journal":"Science advances","confidence":"High","confidence_rationale":"Tier 2 — complete loss-of-function phenotype plus cell-autonomous demonstration plus effector identification plus cross-species validation","pmids":["38748804"],"is_preprint":false},{"year":2024,"finding":"EGR3 negatively regulates adipogenesis by transcriptionally controlling HDAC6 (a downstream target gene); cortisol downregulates EGR3 in adipose tissue, and EGR3 deficiency promotes adipogenesis in human adipose-derived stem cells (hADSCs) and 3T3-L1 cells.","method":"EGR3 overexpression/knockdown, adipogenesis assays in hADSCs and 3T3-L1, in vivo high-fat diet mouse model","journal":"Cell death discovery","confidence":"Medium","confidence_rationale":"Tier 2 — overexpression/KD with functional adipogenesis readout and downstream target identification, single lab","pmids":["38467615"],"is_preprint":false},{"year":1994,"finding":"Egr3/Pilot is a zinc-finger transcription factor with sequence-specific DNA binding and transcriptional activity that is rapidly and transiently induced in hippocampal and cortical neurons by electroconvulsive seizure, NMDA receptor activation, and dopamine neurotransmission alterations; basal cortical expression is driven by natural synaptic activity.","method":"Differential cDNA cloning, Northern blot, in situ hybridization, pharmacological manipulation, monocular deprivation","journal":"Learning & memory","confidence":"Medium","confidence_rationale":"Tier 2 — multiple stimulation paradigms identifying activity-dependent induction with defined temporal profile","pmids":["10467592"],"is_preprint":false},{"year":2022,"finding":"Egr3 is required for activity-dependent expression of GADD45 family members (Gadd45b, Gadd45g), AP-1 family genes (Fos, Fosb), Cenpa, Mef2c, and Calb2 in hippocampus following ECS; many of these are genes differentially expressed in schizophrenia, linking EGR3 to DNA damage response pathways.","method":"Expression microarray (WT vs. Egr3-/- after ECS), qRT-PCR validation, bioinformatic enrichment analysis","journal":"Translational psychiatry","confidence":"Medium","confidence_rationale":"Tier 2 — KO microarray with qRT-PCR validation, single lab","pmids":["35941129"],"is_preprint":false},{"year":2018,"finding":"EGR3 directly regulates HDAC6 gene expression and skin barrier genes (filaggrin, loricrin, involucrin) during late epidermal differentiation; EGR3 mediates regulation of epidermal differentiation complex genes through activation of enhancers and induction of enhancer RNAs.","method":"RNA-seq, chromatin analysis (enhancer RNA induction), knockdown/overexpression in keratinocytes, gene co-expression analysis","journal":"The Journal of investigative dermatology","confidence":"Medium","confidence_rationale":"Tier 2 — multiple genomic methods in one system, single lab","pmids":["30342896"],"is_preprint":false}],"current_model":"EGR3 is an activity-dependent zinc-finger transcription factor that directly binds GC-rich promoter elements to regulate target genes (including GABRA4, Htr2a, BDNF, RELN, ZFP36, GADD45B, SOCS3, HDAC6, Nr4a2, and Nab2) in response to upstream signals including NGF/TrkB-MAPK, NMDA receptor activation, NF-AT (in T cells), mechanical forces (in endothelial cells), and synaptic activity; it is essential for muscle spindle intrafusal fiber differentiation, sympathetic neuron target innervation, hippocampal LTP and memory, T cell anergy via Cbl-b induction, cardiac valve morphogenesis via endothelial cell-autonomous Nr4a2b signaling, and suppression of systemic autoimmunity through Ltbp3-mediated TGF-β3 production in regulatory T cells."},"narrative":{"teleology":[{"year":1994,"claim":"Establishing that EGR3 is an activity-dependent immediate-early transcription factor in the brain resolved whether this zinc-finger protein was constitutive or stimulus-driven, framing all subsequent work on its regulatory logic.","evidence":"Differential cloning, Northern blot, in situ hybridization after electroconvulsive seizure, NMDA receptor activation, and monocular deprivation in rat cortex/hippocampus","pmids":["10467592"],"confidence":"Medium","gaps":["No direct DNA target genes identified at this stage","Upstream signaling cascade not delineated","Functional consequence of induction unknown"]},{"year":1998,"claim":"Demonstration that Egr3-knockout mice completely lack muscle spindles established the first essential in vivo function for EGR3 and showed that its transcriptional activity in myotubes is required for intrafusal fiber differentiation, an irreplaceable developmental role.","evidence":"Gene-targeted knockout mouse with histological and in situ analysis","pmids":["9731539"],"confidence":"High","gaps":["Downstream transcriptional targets in myotubes unknown","Whether role is cell-autonomous in muscle not yet tested"]},{"year":1998,"claim":"Identification of NF-AT as the upstream activator of the EGR3 promoter in T cells revealed how TCR-derived signals converge on EGR3 and explained the cyclosporin A sensitivity of EGR3 induction.","evidence":"Promoter deletion mapping and NF-ATp reconstitution in fibroblasts","pmids":["9819402"],"confidence":"High","gaps":["NF-AT binding not confirmed by ChIP","Other signal inputs to EGR3 promoter not mapped"]},{"year":2001,"claim":"Showing that Ia afferent innervation induces Egr3 in myotubes and that Egr3-null spindles fail to express slow-developmental myosin heavy chain clarified the nerve-to-muscle signaling axis through which Egr3 controls intrafusal differentiation.","evidence":"Nerve transection plus KO mouse analysis with immunohistochemistry and in situ hybridization","pmids":["11401400"],"confidence":"High","gaps":["Specific signal from Ia afferents to Egr3 not identified","Transcriptional targets beyond MyHC isoforms unknown"]},{"year":2004,"claim":"Discovery that estrogen receptor α rapidly induces EGR3, which then activates Nab2 and FasL, placed EGR3 in the estrogen-responsive transcriptional cascade in breast cancer cells.","evidence":"Northern blot with ERα antagonist and cycloheximide, reporter assays, microarray in breast cancer cells","pmids":["15171706"],"confidence":"Medium","gaps":["No ChIP confirming direct ERα binding at the EGR3 promoter","Functional consequence for breast cancer cell phenotype not fully delineated"]},{"year":2005,"claim":"Two parallel discoveries established EGR3 as both a direct transcriptional activator of neuronal target genes (GABRA4 via promoter binding) and a negative regulator of T cell activation (via Cbl-b induction), revealing its bifunctional role across cell types.","evidence":"ChIP plus KO mouse for GABRA4 in hippocampal neurons; overexpression plus KO plus in vivo tolerance assay for Cbl-b in T cells","pmids":["16091474","15834410"],"confidence":"High","gaps":["Genome-wide direct target repertoire unknown","Mechanism of EGR3 selectivity for different targets in different cell types unclear"]},{"year":2006,"claim":"Finding that Egr3 interacts with RORγt protein and suppresses its transcriptional targets in thymocytes uncovered a non-canonical mechanism—protein-protein interaction rather than DNA binding—by which Egr3 coordinates proliferation and VDJ recombination timing.","evidence":"Co-immunoprecipitation, genetic epistasis, reporter assays in thymocytes","pmids":["16782036"],"confidence":"High","gaps":["Structural basis of Egr3–RORγt interaction unknown","Whether this protein-interaction mode operates in other cell types untested"]},{"year":2007,"claim":"Egr3-knockout mice showed impaired early- and late-phase hippocampal LTP and deficits in multiple memory paradigms, establishing EGR3 as a non-redundant transcriptional regulator of synaptic plasticity independent of Egr1.","evidence":"KO mouse with electrophysiology (LTP) and behavioral tasks (fear conditioning, spatial learning)","pmids":["17350282"],"confidence":"High","gaps":["Downstream plasticity genes directly regulated by Egr3 in LTP not identified","Contribution of specific hippocampal subregions unclear"]},{"year":2008,"claim":"Demonstration that Egr3-deficient sympathetic neurons fail to extend and branch terminal axons—without dying—separated EGR3's role in axon morphogenesis from neurotrophin-dependent survival, expanding its function beyond the CNS.","evidence":"KO mouse with immunohistochemistry and physiological assessment of autonomic function","pmids":["18653557"],"confidence":"High","gaps":["Direct transcriptional targets mediating axon branching not identified at this point","Whether defect is cell-autonomous not yet shown"]},{"year":2011,"claim":"Mapping a BDNF→TrkB→MAPK→Egr3→NR1 transcriptional cascade revealed a feed-forward loop in which Egr3, together with CREB, drives NMDA receptor subunit expression, connecting neurotrophin signaling to glutamatergic receptor homeostasis.","evidence":"Promoter reporter, ChIP, pharmacological pathway dissection in primary cortical neurons","pmids":["22035109"],"confidence":"High","gaps":["Whether this cascade operates during LTP in vivo not tested","Relative contributions of Egr3 vs. CREB not resolved"]},{"year":2013,"claim":"Conditional knockout demonstrated a sympathetic neuron-autonomous requirement for Egr3 in dendrite morphology and axon branching and identified downstream target genes involved in axonogenesis, resolving the cell-autonomy question from the 2008 study.","evidence":"Conditional KO, microarray, genetic labeling, neurite outgrowth assay in isolated neurons","pmids":["23467373"],"confidence":"High","gaps":["Direct Egr3 binding to identified target promoters not confirmed by ChIP","Functional rescue with individual targets not performed"]},{"year":2015,"claim":"Three concurrent advances—(1) muscle-specific conditional KO proving cell-autonomous Egr3 function for intrafusal differentiation and GDNF-dependent fusimotor innervation, (2) cell-type-resolved cocaine responses showing opposing Egr3 roles in D1- vs D2-MSNs, and (3) Egr3-dependent Htr2a induction after sleep deprivation—collectively broadened the Egr3 target gene network and demonstrated context-dependent transcriptional output.","evidence":"Muscle conditional KO with genetic tracing; RiboTag + AAV-Cre + ChIP in NAc MSNs; KO mouse with sleep deprivation","pmids":["25855173","25995477","25857407"],"confidence":"High","gaps":["Chromatin-level mechanism of cell-type-specific target gene selection unknown","Direct GDNF promoter binding by Egr3 not demonstrated"]},{"year":2016,"claim":"Discovery that Egr2/Egr3 in regulatory T cells prevent autoimmunity by maintaining Ltbp3-dependent TGF-β3 production identified a discrete immune-tolerance mechanism and explained why T cell-specific Egr loss causes systemic inflammation.","evidence":"T cell-specific double KO, adoptive transfer, TGF-β3-vector rescue, gene expression analysis","pmids":["27911796"],"confidence":"High","gaps":["Individual contribution of Egr3 vs Egr2 to Ltbp3 regulation not separated","Whether Egr3 directly binds Ltbp3 promoter not shown"]},{"year":2018,"claim":"Identification of BDNF and HDAC6 as Egr3-dependent targets in hippocampus and epidermis, respectively, expanded its functional repertoire to activity-dependent neurotrophic signaling and epidermal barrier gene regulation.","evidence":"KO mouse microarray/qRT-PCR for Bdnf; RNA-seq/enhancer RNA analysis/KD in keratinocytes for HDAC6","pmids":["29867393","30342896"],"confidence":"Medium","gaps":["Direct EGR3 ChIP on Bdnf promoter in vivo not performed","Enhancer RNA mechanism not fully dissected"]},{"year":2020,"claim":"ChIP-verified direct binding to ZFP36, GADD45B, SOCS3, and RELN promoters showed that EGR3 activates anti-metastatic programs (EMT suppression in prostate cancer) and Reelin signaling (neurite outgrowth modulation), further diversifying its downstream target network.","evidence":"ChIP, overexpression/KD, in vivo metastasis model; ChIP, reporter assay, neurite outgrowth assay in SH-SY5Y cells","pmids":["32796959","33113163"],"confidence":"Medium","gaps":["Physiological relevance of EGR3-RELN axis in intact brain not tested","Anti-metastatic function not validated in patient-derived models"]},{"year":2021,"claim":"EGR3 was shown to directly activate HDAC6 in mast cells (driving allergic inflammation via IL-27) and to regulate mitochondrial morphology genes (PGC1α, Drp1) in NAc D1-MSNs upon cocaine exposure, revealing specialized transcriptional programs in innate immune and reward circuits.","evidence":"ChIP on HDAC6 promoter in mast cells, passive anaphylaxis model; ChIP on PGC1α/Drp1, AAV-Cre knockdown with mitochondrial morphology in D1-MSNs","pmids":["34234781","34187517"],"confidence":"Medium","gaps":["Selectivity mechanism for HDAC6 activation in mast cells vs other cell types unclear","Mitochondrial functional consequences beyond morphology not assessed"]},{"year":2022,"claim":"In vivo ChIP confirmed direct EGR3 binding to the Htr2a promoter in frontal cortex and demonstrated EGR3-dependent activity-responsive gene programs (GADD45 family, AP-1 family, Mef2c) in hippocampus, consolidating EGR3 as a master regulator of activity-dependent transcription.","evidence":"In vivo ChIP with reporter mutagenesis for Htr2a; expression microarray in WT vs Egr3-/- hippocampus after ECS","pmids":["35001075","35941129"],"confidence":"High","gaps":["Genome-wide ChIP-seq for EGR3 in brain not yet reported","Causal role of individual target genes in LTP/memory phenotype untested"]},{"year":2024,"claim":"Demonstration that egr3-null zebrafish completely lack cardiac valve leaflets and that mechanical forces induce EGR3 in endothelial cells, where it acts cell-autonomously through Nr4a2b, revealed an unexpected mechanosensitive role in cardiovascular morphogenesis conserved across vertebrates.","evidence":"Zebrafish null mutant, tissue-specific gain/loss-of-function, mechanical force manipulation, porcine endothelial cell validation, genetic epistasis","pmids":["38748804"],"confidence":"High","gaps":["Mechanotransduction pathway upstream of EGR3 in endothelial cells not fully mapped","Human cardiac valve disease association not established"]},{"year":null,"claim":"A genome-wide map of direct EGR3 binding sites across cell types (ChIP-seq), structural understanding of how EGR3 selects among its many target promoters in a cell-type-specific manner, and in vivo validation of its role in human disease remain open.","evidence":"","pmids":[],"confidence":"Low","gaps":["No genome-wide ChIP-seq published for EGR3 in any cell type","Structural basis for target selectivity vs other Egr family members unknown","Human genetic disease causation not established"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[0,3,8,16,17,26]},{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,3,5,8,11,16,17,18,24,26]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[3,8,16,22,26]},{"term_id":"GO:0005815","term_label":"microtubule organizing center","supporting_discovery_ids":[22]}],"pathway":[{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[0,3,5,8,16,17,24,26]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[2,4,12]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[0,1,10,24]},{"term_id":"R-HSA-112316","term_label":"Neuronal System","supporting_discovery_ids":[6,7,9,11,26]}],"complexes":[],"partners":["RORΓT","CREB","NF-ATP","NR4A2B"],"other_free_text":[]},"mechanistic_narrative":"EGR3 is an immediate-early zinc-finger transcription factor that couples diverse extracellular signals—including neurotrophins, synaptic activity, antigen-receptor engagement, estrogen, and mechanical force—to cell-type-specific gene programs governing differentiation, plasticity, and immune tolerance. It binds GC-rich promoter elements to directly activate target genes such as GABRA4, Htr2a, BDNF, NR1/GRIN1, RELN, HDAC6, ZFP36, GADD45B, and Cbl-b, linking upstream MAPK, NF-AT, and NF-κB pathways to transcriptional output [PMID:16091474, PMID:35001075, PMID:22035109, PMID:15834410, PMID:9819402]. EGR3 is essential for muscle spindle intrafusal fiber differentiation, sympathetic neuron axon branching, hippocampal LTP and memory, cardiac valve morphogenesis, and suppression of systemic autoimmunity through regulatory T cell–dependent TGF-β3 production [PMID:9731539, PMID:18653557, PMID:17350282, PMID:38748804, PMID:27911796]. In the immune system, EGR3 enforces T cell anergy by inducing the E3 ubiquitin ligase Cbl-b and cooperates with Egr2 in regulatory T cells to maintain Ltbp3 expression and prevent autoimmunity [PMID:15834410, PMID:27911796]."},"prefetch_data":{"uniprot":{"accession":"Q06889","full_name":"Early growth response protein 3","aliases":["Zinc finger protein pilot"],"length_aa":387,"mass_kda":42.6,"function":"Probable transcription factor involved in muscle spindle development","subcellular_location":"Nucleus","url":"https://www.uniprot.org/uniprotkb/Q06889/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/EGR3","classification":"Not Classified","n_dependent_lines":0,"n_total_lines":1208,"dependency_fraction":0.0},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/EGR3","total_profiled":1310},"omim":[{"mim_id":"620799","title":"LONG INTERGENIC NONCODING RNA 941; LINC00941","url":"https://www.omim.org/entry/620799"},{"mim_id":"602419","title":"EARLY GROWTH RESPONSE 3; EGR3","url":"https://www.omim.org/entry/602419"},{"mim_id":"600800","title":"NGFIA-BINDING PROTEIN; NAB1","url":"https://www.omim.org/entry/600800"},{"mim_id":"137141","title":"GAMMA-AMINOBUTYRIC ACID RECEPTOR, ALPHA-4; GABRA4","url":"https://www.omim.org/entry/137141"},{"mim_id":"129010","title":"EARLY GROWTH RESPONSE 2; EGR2","url":"https://www.omim.org/entry/129010"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Uncertain","locations":[{"location":"Nucleoplasm","reliability":"Uncertain"},{"location":"Vesicles","reliability":"Additional"}],"tissue_specificity":"Tissue enhanced","tissue_distribution":"Detected in many","driving_tissues":[{"tissue":"skin 1","ntpm":41.7}],"url":"https://www.proteinatlas.org/search/EGR3"},"hgnc":{"alias_symbol":["PILOT"],"prev_symbol":[]},"alphafold":{"accession":"Q06889","domains":[{"cath_id":"3.30.160.60","chopping":"303-363","consensus_level":"medium","plddt":88.1913,"start":303,"end":363}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q06889","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q06889-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q06889-F1-predicted_aligned_error_v6.png","plddt_mean":49.97},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=EGR3","jax_strain_url":"https://www.jax.org/strain/search?query=EGR3"},"sequence":{"accession":"Q06889","fasta_url":"https://rest.uniprot.org/uniprotkb/Q06889.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q06889/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q06889"}},"corpus_meta":[{"pmid":"15834410","id":"PMC_15834410","title":"Egr-2 and Egr-3 are negative regulators of T cell activation.","date":"2005","source":"Nature immunology","url":"https://pubmed.ncbi.nlm.nih.gov/15834410","citation_count":350,"is_preprint":false},{"pmid":"9731539","id":"PMC_9731539","title":"Sensory ataxia and muscle spindle agenesis in mice lacking the transcription factor Egr3.","date":"1998","source":"Nature genetics","url":"https://pubmed.ncbi.nlm.nih.gov/9731539","citation_count":235,"is_preprint":false},{"pmid":"17360599","id":"PMC_17360599","title":"Genetic analysis of the calcineurin pathway identifies members of the EGR gene family, specifically EGR3, as potential susceptibility candidates in schizophrenia.","date":"2007","source":"Proceedings of the National Academy of Sciences of the United States of America","url":"https://pubmed.ncbi.nlm.nih.gov/17360599","citation_count":143,"is_preprint":false},{"pmid":"17350282","id":"PMC_17350282","title":"Egr3, a synaptic activity regulated transcription factor that is essential for learning and memory.","date":"2007","source":"Molecular and cellular neurosciences","url":"https://pubmed.ncbi.nlm.nih.gov/17350282","citation_count":102,"is_preprint":false},{"pmid":"25995477","id":"PMC_25995477","title":"Opposing role for Egr3 in nucleus accumbens cell subtypes in cocaine action.","date":"2015","source":"The Journal of neuroscience : the official journal of the Society for Neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/25995477","citation_count":101,"is_preprint":false},{"pmid":"29721177","id":"PMC_29721177","title":"A pilot study of durvalumab and tremelimumab and immunogenomic dynamics in metastatic breast cancer.","date":"2018","source":"Oncotarget","url":"https://pubmed.ncbi.nlm.nih.gov/29721177","citation_count":98,"is_preprint":false},{"pmid":"10818245","id":"PMC_10818245","title":"Salivary proteins of aphids, a pilot study on identification, separation and immunolocalisation.","date":"2000","source":"Journal of insect physiology","url":"https://pubmed.ncbi.nlm.nih.gov/10818245","citation_count":93,"is_preprint":false},{"pmid":"30962186","id":"PMC_30962186","title":"Blood Microbiome Profile in CKD : A Pilot Study.","date":"2019","source":"Clinical journal of the American Society of Nephrology : CJASN","url":"https://pubmed.ncbi.nlm.nih.gov/30962186","citation_count":92,"is_preprint":false},{"pmid":"16782036","id":"PMC_16782036","title":"Interplay between RORgammat, Egr3, and E proteins controls proliferation in response to pre-TCR signals.","date":"2006","source":"Immunity","url":"https://pubmed.ncbi.nlm.nih.gov/16782036","citation_count":88,"is_preprint":false},{"pmid":"15171706","id":"PMC_15171706","title":"Transcription factor EGR3 is involved in the estrogen-signaling pathway in breast cancer cells.","date":"2004","source":"Journal of molecular endocrinology","url":"https://pubmed.ncbi.nlm.nih.gov/15171706","citation_count":87,"is_preprint":false},{"pmid":"16091474","id":"PMC_16091474","title":"Egr3 stimulation of GABRA4 promoter activity as a mechanism for seizure-induced up-regulation of GABA(A) receptor alpha4 subunit expression.","date":"2005","source":"Proceedings of the National Academy of Sciences of the United States of America","url":"https://pubmed.ncbi.nlm.nih.gov/16091474","citation_count":86,"is_preprint":false},{"pmid":"10467592","id":"PMC_10467592","title":"Egr3/Pilot, a zinc finger transcription factor, is rapidly regulated by activity in brain neurons and colocalizes with Egr1/zif268.","date":"1994","source":"Learning & memory (Cold Spring Harbor, N.Y.)","url":"https://pubmed.ncbi.nlm.nih.gov/10467592","citation_count":79,"is_preprint":false},{"pmid":"3558007","id":"PMC_3558007","title":"Meal frequency and nutritional intake during Ramadan: a pilot study.","date":"1987","source":"Human nutrition. Applied nutrition","url":"https://pubmed.ncbi.nlm.nih.gov/3558007","citation_count":75,"is_preprint":false},{"pmid":"11401400","id":"PMC_11401400","title":"The transcription factor Egr3 modulates sensory axon-myotube interactions during muscle spindle morphogenesis.","date":"2001","source":"Developmental biology","url":"https://pubmed.ncbi.nlm.nih.gov/11401400","citation_count":70,"is_preprint":false},{"pmid":"22035109","id":"PMC_22035109","title":"Brain-derived neurotrophic factor uses CREB and Egr3 to regulate NMDA receptor levels in cortical neurons.","date":"2011","source":"Journal of neurochemistry","url":"https://pubmed.ncbi.nlm.nih.gov/22035109","citation_count":59,"is_preprint":false},{"pmid":"12618370","id":"PMC_12618370","title":"Schizosaccharomyces pombe essential genes: a pilot study.","date":"2003","source":"Genome research","url":"https://pubmed.ncbi.nlm.nih.gov/12618370","citation_count":57,"is_preprint":false},{"pmid":"26333279","id":"PMC_26333279","title":"MicroRNA profiling in migraine without aura: pilot study.","date":"2015","source":"Annals of medicine","url":"https://pubmed.ncbi.nlm.nih.gov/26333279","citation_count":56,"is_preprint":false},{"pmid":"27911796","id":"PMC_27911796","title":"Egr2 and Egr3 in regulatory T cells cooperatively control systemic autoimmunity through Ltbp3-mediated TGF-β3 production.","date":"2016","source":"Proceedings of the National Academy of Sciences of the United States of America","url":"https://pubmed.ncbi.nlm.nih.gov/27911796","citation_count":49,"is_preprint":false},{"pmid":"22154164","id":"PMC_22154164","title":"MreB: pilot or passenger of cell wall synthesis?","date":"2011","source":"Trends in microbiology","url":"https://pubmed.ncbi.nlm.nih.gov/22154164","citation_count":46,"is_preprint":false},{"pmid":"28860938","id":"PMC_28860938","title":"Early growth response 2 and Egr3 are unique regulators in immune system.","date":"2017","source":"Central-European journal of immunology","url":"https://pubmed.ncbi.nlm.nih.gov/28860938","citation_count":45,"is_preprint":false},{"pmid":"25855173","id":"PMC_25855173","title":"Egr3-dependent muscle spindle stretch receptor intrafusal muscle fiber differentiation and fusimotor innervation homeostasis.","date":"2015","source":"The Journal of neuroscience : the official journal of the Society for Neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/25855173","citation_count":43,"is_preprint":false},{"pmid":"26474411","id":"PMC_26474411","title":"Association of SNPs in EGR3 and ARC with Schizophrenia Supports a Biological Pathway for Schizophrenia Risk.","date":"2015","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/26474411","citation_count":42,"is_preprint":false},{"pmid":"18653557","id":"PMC_18653557","title":"Abnormal sympathetic nervous system development and physiological dysautonomia in Egr3-deficient mice.","date":"2008","source":"Development (Cambridge, England)","url":"https://pubmed.ncbi.nlm.nih.gov/18653557","citation_count":42,"is_preprint":false},{"pmid":"8100852","id":"PMC_8100852","title":"Expression of the multidrug resistance gene in osteosarcoma: a pilot study.","date":"1993","source":"Journal of orthopaedic research : official publication of the Orthopaedic Research Society","url":"https://pubmed.ncbi.nlm.nih.gov/8100852","citation_count":38,"is_preprint":false},{"pmid":"23342084","id":"PMC_23342084","title":"Early growth response 3 (Egr3) is highly over-expressed in non-relapsing prostate cancer but not in relapsing prostate cancer.","date":"2013","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/23342084","citation_count":37,"is_preprint":false},{"pmid":"20687139","id":"PMC_20687139","title":"EGR3 as a potential susceptibility gene for schizophrenia in Korea.","date":"2010","source":"American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics","url":"https://pubmed.ncbi.nlm.nih.gov/20687139","citation_count":35,"is_preprint":false},{"pmid":"27856665","id":"PMC_27856665","title":"Emerging roles of Egr2 and Egr3 in the control of systemic autoimmunity.","date":"2016","source":"Rheumatology (Oxford, England)","url":"https://pubmed.ncbi.nlm.nih.gov/27856665","citation_count":34,"is_preprint":false},{"pmid":"35073418","id":"PMC_35073418","title":"Biome-microbiome interactions in peri-implantitis: A pilot investigation.","date":"2022","source":"Journal of periodontology","url":"https://pubmed.ncbi.nlm.nih.gov/35073418","citation_count":34,"is_preprint":false},{"pmid":"23467373","id":"PMC_23467373","title":"A sympathetic neuron autonomous role for Egr3-mediated gene regulation in dendrite morphogenesis and target tissue innervation.","date":"2013","source":"The Journal of neuroscience : the official journal of the Society for Neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/23467373","citation_count":32,"is_preprint":false},{"pmid":"26775236","id":"PMC_26775236","title":"Overexpression of the immediate-early genes Egr1, Egr2, and Egr3 in two strains of rodents susceptible to audiogenic seizures.","date":"2016","source":"Epilepsy & behavior : E&B","url":"https://pubmed.ncbi.nlm.nih.gov/26775236","citation_count":31,"is_preprint":false},{"pmid":"31248049","id":"PMC_31248049","title":"The Metabolomic Profile of Lymphoma Subtypes: A Pilot Study.","date":"2019","source":"Molecules (Basel, Switzerland)","url":"https://pubmed.ncbi.nlm.nih.gov/31248049","citation_count":30,"is_preprint":false},{"pmid":"32796959","id":"PMC_32796959","title":"Loss of EGR3 is an independent risk factor for metastatic progression in prostate cancer.","date":"2020","source":"Oncogene","url":"https://pubmed.ncbi.nlm.nih.gov/32796959","citation_count":30,"is_preprint":false},{"pmid":"23154546","id":"PMC_23154546","title":"A pilot characterization of human lung NSCLC by protein pathway activation mapping.","date":"2012","source":"Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer","url":"https://pubmed.ncbi.nlm.nih.gov/23154546","citation_count":30,"is_preprint":false},{"pmid":"39237985","id":"PMC_39237985","title":"Use of EMPAgliflozin in the prevention of CARDiotoxicity: the EMPACARD - PILOT trial.","date":"2024","source":"Cardio-oncology (London, England)","url":"https://pubmed.ncbi.nlm.nih.gov/39237985","citation_count":29,"is_preprint":false},{"pmid":"30981637","id":"PMC_30981637","title":"Immune expression in children with Wilms tumor: a pilot study.","date":"2019","source":"Journal of pediatric urology","url":"https://pubmed.ncbi.nlm.nih.gov/30981637","citation_count":29,"is_preprint":false},{"pmid":"27073425","id":"PMC_27073425","title":"Candidate gene polymorphisms and risk of psoriasis: A pilot study.","date":"2016","source":"Experimental and therapeutic medicine","url":"https://pubmed.ncbi.nlm.nih.gov/27073425","citation_count":28,"is_preprint":false},{"pmid":"34243729","id":"PMC_34243729","title":"XIST promotes apoptosis and the inflammatory response in CSE-stimulated cells via the miR-200c-3p/EGR3 axis.","date":"2021","source":"BMC pulmonary medicine","url":"https://pubmed.ncbi.nlm.nih.gov/34243729","citation_count":27,"is_preprint":false},{"pmid":"34168423","id":"PMC_34168423","title":"Pilot-Scale Production of Peroxygenase from Agrocybe aegerita.","date":"2021","source":"Organic process research & development","url":"https://pubmed.ncbi.nlm.nih.gov/34168423","citation_count":27,"is_preprint":false},{"pmid":"26375254","id":"PMC_26375254","title":"A Microbiopsy Method for Immunohistological and Morphological Analysis: A Pilot Study.","date":"2016","source":"Medicine and science in sports and exercise","url":"https://pubmed.ncbi.nlm.nih.gov/26375254","citation_count":26,"is_preprint":false},{"pmid":"25556039","id":"PMC_25556039","title":"Sexual dimorphism of canine volume: a pilot study.","date":"2014","source":"Legal medicine (Tokyo, Japan)","url":"https://pubmed.ncbi.nlm.nih.gov/25556039","citation_count":26,"is_preprint":false},{"pmid":"2092722","id":"PMC_2092722","title":"Pilot- and process-scale techniques for cell disruption.","date":"1990","source":"Biotechnology and applied biochemistry","url":"https://pubmed.ncbi.nlm.nih.gov/2092722","citation_count":26,"is_preprint":false},{"pmid":"7388266","id":"PMC_7388266","title":"A pilot of plasma thioridazine and metabolites in chronically treated patients.","date":"1980","source":"The British journal of psychiatry : the journal of mental science","url":"https://pubmed.ncbi.nlm.nih.gov/7388266","citation_count":25,"is_preprint":false},{"pmid":"23962955","id":"PMC_23962955","title":"Association of decreased prefrontal hemodynamic response during a verbal fluency task with EGR3 gene polymorphism in patients with schizophrenia and in healthy individuals.","date":"2013","source":"NeuroImage","url":"https://pubmed.ncbi.nlm.nih.gov/23962955","citation_count":24,"is_preprint":false},{"pmid":"25857407","id":"PMC_25857407","title":"Htr2a Expression Responds Rapidly to Environmental Stimuli in an Egr3-Dependent Manner.","date":"2015","source":"ACS chemical neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/25857407","citation_count":23,"is_preprint":false},{"pmid":"31655148","id":"PMC_31655148","title":"Penta-O-galloyl-β-D-glucose from Paeonia lactiflora Pall. root extract enhances the expression of skin barrier genes via EGR3.","date":"2019","source":"Journal of ethnopharmacology","url":"https://pubmed.ncbi.nlm.nih.gov/31655148","citation_count":23,"is_preprint":false},{"pmid":"33015544","id":"PMC_33015544","title":"Serum protein biomarkers for juvenile dermatomyositis: a pilot study.","date":"2020","source":"BMC rheumatology","url":"https://pubmed.ncbi.nlm.nih.gov/33015544","citation_count":23,"is_preprint":false},{"pmid":"28400995","id":"PMC_28400995","title":"WhatsApp for Teaching Pathology Postgraduates: A Pilot Study.","date":"2017","source":"Journal of pathology informatics","url":"https://pubmed.ncbi.nlm.nih.gov/28400995","citation_count":22,"is_preprint":false},{"pmid":"26703288","id":"PMC_26703288","title":"Injectable intraocular telescope: Pilot study.","date":"2015","source":"Journal of cataract and refractive surgery","url":"https://pubmed.ncbi.nlm.nih.gov/26703288","citation_count":22,"is_preprint":false},{"pmid":"27576048","id":"PMC_27576048","title":"Early Growth Response 3 (Egr3) Contributes a Maintenance of C2C12 Myoblast Proliferation.","date":"2016","source":"Journal of cellular physiology","url":"https://pubmed.ncbi.nlm.nih.gov/27576048","citation_count":22,"is_preprint":false},{"pmid":"31858986","id":"PMC_31858986","title":"Sex-Specific Role for Egr3 in Nucleus Accumbens D2-Medium Spiny Neurons Following Long-Term Abstinence From Cocaine Self-administration.","date":"2019","source":"Biological psychiatry","url":"https://pubmed.ncbi.nlm.nih.gov/31858986","citation_count":22,"is_preprint":false},{"pmid":"22276163","id":"PMC_22276163","title":"Genetic evidence for the association between the early growth response 3 (EGR3) gene and schizophrenia.","date":"2012","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/22276163","citation_count":22,"is_preprint":false},{"pmid":"25455830","id":"PMC_25455830","title":"Pilot the pulse: controlling the multiplicity of receptor dynamics.","date":"2014","source":"Trends in pharmacological sciences","url":"https://pubmed.ncbi.nlm.nih.gov/25455830","citation_count":22,"is_preprint":false},{"pmid":"35863559","id":"PMC_35863559","title":"A randomized controlled pilot trial of anakinra for hemodialysis inflammation.","date":"2022","source":"Kidney international","url":"https://pubmed.ncbi.nlm.nih.gov/35863559","citation_count":21,"is_preprint":false},{"pmid":"36744089","id":"PMC_36744089","title":"Endometrial microbiota in women with and without adenomyosis: A pilot study.","date":"2023","source":"Frontiers in microbiology","url":"https://pubmed.ncbi.nlm.nih.gov/36744089","citation_count":21,"is_preprint":false},{"pmid":"29867393","id":"PMC_29867393","title":"The Immediate Early Gene Egr3 Is Required for Hippocampal Induction of Bdnf by Electroconvulsive Stimulation.","date":"2018","source":"Frontiers in behavioral neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/29867393","citation_count":20,"is_preprint":false},{"pmid":"24058814","id":"PMC_24058814","title":"Egr2 and Egr3 are the unique regulators for systemic autoimmunity.","date":"2013","source":"JAK-STAT","url":"https://pubmed.ncbi.nlm.nih.gov/24058814","citation_count":20,"is_preprint":false},{"pmid":"28811843","id":"PMC_28811843","title":"Transcriptomics and methylomics in chronic periodontitis with tobacco use: a pilot study.","date":"2017","source":"Clinical epigenetics","url":"https://pubmed.ncbi.nlm.nih.gov/28811843","citation_count":20,"is_preprint":false},{"pmid":"9819402","id":"PMC_9819402","title":"Utilization of an NF-ATp binding promoter element for EGR3 expression in T cells but not fibroblasts provides a molecular model for the lymphoid cell-specific effect of cyclosporin A.","date":"1998","source":"Molecular and cellular biology","url":"https://pubmed.ncbi.nlm.nih.gov/9819402","citation_count":20,"is_preprint":false},{"pmid":"29898687","id":"PMC_29898687","title":"PD-L1 assessment in pediatric rhabdomyosarcoma: a pilot study.","date":"2018","source":"BMC cancer","url":"https://pubmed.ncbi.nlm.nih.gov/29898687","citation_count":20,"is_preprint":false},{"pmid":"24250268","id":"PMC_24250268","title":"Human SLC26A1 gene variants: a pilot study.","date":"2013","source":"TheScientificWorldJournal","url":"https://pubmed.ncbi.nlm.nih.gov/24250268","citation_count":20,"is_preprint":false},{"pmid":"34187517","id":"PMC_34187517","title":"Cocaine-induced neuron subtype mitochondrial dynamics through Egr3 transcriptional regulation.","date":"2021","source":"Molecular brain","url":"https://pubmed.ncbi.nlm.nih.gov/34187517","citation_count":19,"is_preprint":false},{"pmid":"34234781","id":"PMC_34234781","title":"EGR3-HDAC6-IL-27 Axis Mediates Allergic Inflammation and Is Necessary for Tumorigenic Potential of Cancer Cells Enhanced by Allergic Inflammation-Promoted Cellular Interactions.","date":"2021","source":"Frontiers in immunology","url":"https://pubmed.ncbi.nlm.nih.gov/34234781","citation_count":19,"is_preprint":false},{"pmid":"16426480","id":"PMC_16426480","title":"Seroprevalence of toxocariasis in Lebanon: a pilot study.","date":"2006","source":"Parasitology","url":"https://pubmed.ncbi.nlm.nih.gov/16426480","citation_count":19,"is_preprint":false},{"pmid":"33152938","id":"PMC_33152938","title":"Hepatotoxicity of nutmeg: A pilot study based on metabolomics.","date":"2020","source":"Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie","url":"https://pubmed.ncbi.nlm.nih.gov/33152938","citation_count":19,"is_preprint":false},{"pmid":"30342896","id":"PMC_30342896","title":"EGR3 Is a Late Epidermal Differentiation Regulator that Establishes the Skin-Specific Gene Network.","date":"2018","source":"The Journal of investigative dermatology","url":"https://pubmed.ncbi.nlm.nih.gov/30342896","citation_count":18,"is_preprint":false},{"pmid":"38177382","id":"PMC_38177382","title":"Detection of PatIent-Level distances from single cell genomics and pathomics data with Optimal Transport (PILOT).","date":"2023","source":"Molecular systems biology","url":"https://pubmed.ncbi.nlm.nih.gov/38177382","citation_count":18,"is_preprint":false},{"pmid":"4091031","id":"PMC_4091031","title":"The wish to have a child. A pilot-study of infertile couples.","date":"1985","source":"Acta psychiatrica Scandinavica","url":"https://pubmed.ncbi.nlm.nih.gov/4091031","citation_count":18,"is_preprint":false},{"pmid":"35001075","id":"PMC_35001075","title":"Acute sleep deprivation upregulates serotonin 2A receptors in the frontal cortex of mice via the immediate early gene Egr3.","date":"2022","source":"Molecular psychiatry","url":"https://pubmed.ncbi.nlm.nih.gov/35001075","citation_count":17,"is_preprint":false},{"pmid":"16781010","id":"PMC_16781010","title":"Is there a pilot in a pseudopod?","date":"2006","source":"European journal of cell biology","url":"https://pubmed.ncbi.nlm.nih.gov/16781010","citation_count":17,"is_preprint":false},{"pmid":"34349506","id":"PMC_34349506","title":"Sputum Protein Biomarkers in Airway Diseases: A Pilot Study.","date":"2021","source":"International journal of chronic obstructive pulmonary disease","url":"https://pubmed.ncbi.nlm.nih.gov/34349506","citation_count":17,"is_preprint":false},{"pmid":"8861653","id":"PMC_8861653","title":"Thiopurine methyltransferase: a review and a clinical pilot study.","date":"1996","source":"Journal of chromatography. B, Biomedical applications","url":"https://pubmed.ncbi.nlm.nih.gov/8861653","citation_count":17,"is_preprint":false},{"pmid":"35941129","id":"PMC_35941129","title":"Identification of activity-induced Egr3-dependent genes reveals genes associated with DNA damage response and schizophrenia.","date":"2022","source":"Translational psychiatry","url":"https://pubmed.ncbi.nlm.nih.gov/35941129","citation_count":16,"is_preprint":false},{"pmid":"29459824","id":"PMC_29459824","title":"EGR3 Immediate Early Gene and the Brain-Derived Neurotrophic Factor in Bipolar Disorder.","date":"2018","source":"Frontiers in behavioral neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/29459824","citation_count":16,"is_preprint":false},{"pmid":"30318979","id":"PMC_30318979","title":"Influence of Schizophrenia-Associated Gene Egr3 on Sleep Behavior and Circadian Rhythms in Mice.","date":"2018","source":"Journal of biological rhythms","url":"https://pubmed.ncbi.nlm.nih.gov/30318979","citation_count":16,"is_preprint":false},{"pmid":"19903344","id":"PMC_19903344","title":"Dietary intakes in infertile women a pilot study.","date":"2009","source":"Nutrition journal","url":"https://pubmed.ncbi.nlm.nih.gov/19903344","citation_count":16,"is_preprint":false},{"pmid":"32860660","id":"PMC_32860660","title":"De novo mutations in idiopathic male infertility-A pilot study.","date":"2020","source":"Andrology","url":"https://pubmed.ncbi.nlm.nih.gov/32860660","citation_count":16,"is_preprint":false},{"pmid":"16885739","id":"PMC_16885739","title":"Pilot study of mucosal genetic differences in early smokers and nonsmokers.","date":"2006","source":"The Laryngoscope","url":"https://pubmed.ncbi.nlm.nih.gov/16885739","citation_count":16,"is_preprint":false},{"pmid":"17429196","id":"PMC_17429196","title":"Doxycycline: a pilot study to reduce diabetic proteinuria.","date":"2007","source":"American journal of nephrology","url":"https://pubmed.ncbi.nlm.nih.gov/17429196","citation_count":15,"is_preprint":false},{"pmid":"18622776","id":"PMC_18622776","title":"Social dysfunction in bipolar disorder: pilot study.","date":"2008","source":"The Australian and New Zealand journal of psychiatry","url":"https://pubmed.ncbi.nlm.nih.gov/18622776","citation_count":15,"is_preprint":false},{"pmid":"33113163","id":"PMC_33113163","title":"Schizophrenia risk candidate EGR3 is a novel transcriptional regulator of RELN and regulates neurite outgrowth via the Reelin signal pathway in vitro.","date":"2020","source":"Journal of neurochemistry","url":"https://pubmed.ncbi.nlm.nih.gov/33113163","citation_count":15,"is_preprint":false},{"pmid":"24886494","id":"PMC_24886494","title":"Association of Egr3 genetic polymorphisms and coronary artery disease in the Uygur and Han of China.","date":"2014","source":"Lipids in health and disease","url":"https://pubmed.ncbi.nlm.nih.gov/24886494","citation_count":15,"is_preprint":false},{"pmid":"19131241","id":"PMC_19131241","title":"Reflections on some pilot trials of gastrin receptor blockade in pancreatic cancer.","date":"2009","source":"European journal of cancer (Oxford, England : 1990)","url":"https://pubmed.ncbi.nlm.nih.gov/19131241","citation_count":15,"is_preprint":false},{"pmid":"33905537","id":"PMC_33905537","title":"Nuclear lipidome is altered in amyotrophic lateral sclerosis: A pilot study.","date":"2021","source":"Journal of neurochemistry","url":"https://pubmed.ncbi.nlm.nih.gov/33905537","citation_count":15,"is_preprint":false},{"pmid":"37964784","id":"PMC_37964784","title":"Posthospital Multidisciplinary Care for AKI Survivors: A Feasibility Pilot.","date":"2023","source":"Kidney medicine","url":"https://pubmed.ncbi.nlm.nih.gov/37964784","citation_count":15,"is_preprint":false},{"pmid":"33135080","id":"PMC_33135080","title":"Flash on gut microbiome in gestational diabetes: a pilot study.","date":"2020","source":"The new microbiologica","url":"https://pubmed.ncbi.nlm.nih.gov/33135080","citation_count":14,"is_preprint":false},{"pmid":"33215816","id":"PMC_33215816","title":"Cardiac fibroblast miR-27a may function as an endogenous anti-fibrotic by negatively regulating Early Growth Response Protein 3 (EGR3).","date":"2020","source":"Journal of cellular and molecular medicine","url":"https://pubmed.ncbi.nlm.nih.gov/33215816","citation_count":14,"is_preprint":false},{"pmid":"15658186","id":"PMC_15658186","title":"Prevalence of the sickle cell gene in Yemen: a pilot study.","date":"2004","source":"Hemoglobin","url":"https://pubmed.ncbi.nlm.nih.gov/15658186","citation_count":14,"is_preprint":false},{"pmid":"28057087","id":"PMC_28057087","title":"Sleep Homeostatic and Waking Behavioral Phenotypes in Egr3-Deficient Mice Associated with Serotonin Receptor 5-HT2 Deficits.","date":"2016","source":"Sleep","url":"https://pubmed.ncbi.nlm.nih.gov/28057087","citation_count":13,"is_preprint":false},{"pmid":"38163646","id":"PMC_38163646","title":"A pilot oral history of plant synthetic biology.","date":"2024","source":"Plant physiology","url":"https://pubmed.ncbi.nlm.nih.gov/38163646","citation_count":12,"is_preprint":false},{"pmid":"38467615","id":"PMC_38467615","title":"Shift work promotes adipogenesis via cortisol-dependent downregulation of EGR3-HDAC6 pathway.","date":"2024","source":"Cell death discovery","url":"https://pubmed.ncbi.nlm.nih.gov/38467615","citation_count":12,"is_preprint":false},{"pmid":"24573881","id":"PMC_24573881","title":"AnaLysis of Expression on human chromosome 21, ALE-HSA21: a pilot integrated web resource.","date":"2014","source":"Database : the journal of biological databases and curation","url":"https://pubmed.ncbi.nlm.nih.gov/24573881","citation_count":12,"is_preprint":false},{"pmid":"39254196","id":"PMC_39254196","title":"Scaling CO2 Electrolyzer Cell Area from Bench to Pilot.","date":"2024","source":"ACS applied materials & interfaces","url":"https://pubmed.ncbi.nlm.nih.gov/39254196","citation_count":12,"is_preprint":false},{"pmid":"24722338","id":"PMC_24722338","title":"The transcription factor Egr3 is a putative component of the microtubule organizing center in mouse oocytes.","date":"2014","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/24722338","citation_count":12,"is_preprint":false},{"pmid":"38748804","id":"PMC_38748804","title":"egr3 is a mechanosensitive transcription factor gene required for cardiac valve morphogenesis.","date":"2024","source":"Science advances","url":"https://pubmed.ncbi.nlm.nih.gov/38748804","citation_count":11,"is_preprint":false},{"pmid":"15247013","id":"PMC_15247013","title":"The aging/precancerous gastric mucosa: a pilot nutraceutical trial.","date":"2004","source":"Annals of the New York Academy of Sciences","url":"https://pubmed.ncbi.nlm.nih.gov/15247013","citation_count":11,"is_preprint":false},{"pmid":"37565763","id":"PMC_37565763","title":"TRPS1 immunohistochemical expression in salivary gland tumors: A pilot study.","date":"2023","source":"American journal of clinical pathology","url":"https://pubmed.ncbi.nlm.nih.gov/37565763","citation_count":11,"is_preprint":false},{"pmid":"28589041","id":"PMC_28589041","title":"Attenuated Late-Phase Arc Transcription in the Dentate Gyrus of Mice Lacking Egr3.","date":"2017","source":"Neural plasticity","url":"https://pubmed.ncbi.nlm.nih.gov/28589041","citation_count":11,"is_preprint":false},{"pmid":"32138690","id":"PMC_32138690","title":"Silencing of microRNA-210 inhibits the progression of liver cancer and hepatitis B virus-associated liver cancer via targeting EGR3.","date":"2020","source":"BMC medical genetics","url":"https://pubmed.ncbi.nlm.nih.gov/32138690","citation_count":11,"is_preprint":false},{"pmid":"29894933","id":"PMC_29894933","title":"Salivary glutathione in bipolar disorder: A pilot study.","date":"2018","source":"Journal of affective disorders","url":"https://pubmed.ncbi.nlm.nih.gov/29894933","citation_count":10,"is_preprint":false},{"pmid":"36849419","id":"PMC_36849419","title":"Inducible CRISPR Epigenome Systems Mimic Cocaine Induced Bidirectional Regulation of Nab2 and Egr3.","date":"2023","source":"The Journal of neuroscience : the official journal of the Society for Neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/36849419","citation_count":10,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":50853,"output_tokens":6513,"usd":0.125127},"stage2":{"model":"claude-opus-4-6","input_tokens":10241,"output_tokens":4320,"usd":0.238808},"total_usd":0.363935,"stage1_batch_id":"msgbatch_0118RScg3WGaGkaZRtWZbtce","stage2_batch_id":"msgbatch_01Cpfzvtbj42aqp5oYZ5Te2s","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 1998,\n      \"finding\": \"Egr3 is a zinc-finger transcription factor essential for muscle spindle development; Egr3-deficient mice generated by gene targeting completely lack muscle spindles, demonstrating that Egr3-mediated transcription in type I myotubes is required for intrafusal fiber differentiation and spindle morphogenesis.\",\n      \"method\": \"Gene targeting (knockout mouse), histology, in situ expression analysis\",\n      \"journal\": \"Nature genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — clean KO with specific developmental phenotype, replicated and foundational\",\n      \"pmids\": [\"9731539\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2001,\n      \"finding\": \"Egr3 expression in developing myotubes is induced by Ia afferent innervation and controls intrafusal fiber differentiation; following nerve transection Egr3 expression dissipates, and in its absence newborn spindles fail to induce slow-developmental myosin heavy chain and subsequently disassemble after sensory/motor innervation withdraws.\",\n      \"method\": \"Knockout mouse analysis, nerve transection, immunohistochemistry, in situ hybridization\",\n      \"journal\": \"Developmental biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple orthogonal methods in KO model with defined cellular phenotype\",\n      \"pmids\": [\"11401400\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Egr3 (and Egr2) act as negative regulators of T cell activation by promoting expression of the E3 ubiquitin ligase Cbl-b; Egr3-deficient T cells have lower Cbl-b expression and are resistant to peptide-induced tolerance in vivo.\",\n      \"method\": \"Overexpression, knockout mouse, in vivo tolerance assay, microarray\",\n      \"journal\": \"Nature immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — KO plus overexpression with defined molecular and in vivo phenotype, highly cited\",\n      \"pmids\": [\"15834410\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Egr3 directly up-regulates GABRA4 promoter activity and endogenous GABA-A receptor alpha4 subunit levels in hippocampal neurons; Egr3 binds to the GABRA4 promoter in dentate granule cells following status epilepticus, and Egr3 knockout mice have ~50% less GABRA4 mRNA in hippocampus.\",\n      \"method\": \"Transfection/reporter assay in primary neurons, chromatin immunoprecipitation (ChIP), AAV-driven reporter in vivo, knockout mouse\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — in vitro promoter assay + ChIP + KO mouse with quantitative mRNA readout\",\n      \"pmids\": [\"16091474\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"Egr3 is transiently induced by pre-TCR signals in thymocytes and promotes proliferation by reducing E protein-dependent RORγt expression and by interacting with RORγt to prevent induction of RORγt target genes; this delays RORγt-mediated gene rearrangement and enables temporal separation of proliferation from VDJ recombination.\",\n      \"method\": \"Overexpression, genetic epistasis, reporter assays, co-immunoprecipitation (interaction with RORγt)\",\n      \"journal\": \"Immunity\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — epistasis plus protein interaction plus functional phenotype in primary thymocytes\",\n      \"pmids\": [\"16782036\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1998,\n      \"finding\": \"EGR3 gene expression in T cells is controlled by a 27-bp promoter element that interacts with NF-ATp and NF-ATc; overexpression of NF-ATp (but not NF-ATc) in fibroblasts restores the two-signal, cyclosporin A-sensitive EGR3 induction, explaining the lymphoid-cell specificity of CsA action on EGR3.\",\n      \"method\": \"Promoter deletion analysis, reporter assay, NF-AT overexpression in fibroblasts\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — reconstituted NF-AT-dependent promoter activity with mutagenesis-equivalent deletion mapping\",\n      \"pmids\": [\"9819402\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"Egr3 is essential for normal hippocampal LTP (early- and late-phase) and for both short-term and long-term hippocampus- and amygdala-dependent learning and memory; these deficits are independent of Egr1, whose protein levels are unaltered in Egr3-deficient brain regions.\",\n      \"method\": \"Knockout mouse, electrophysiology (LTP), behavioral memory tasks (fear conditioning, spatial learning)\",\n      \"journal\": \"Molecular and cellular neurosciences\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — KO with multiple orthogonal behavioral and electrophysiological readouts\",\n      \"pmids\": [\"17350282\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"Egr3 is induced by NGF signaling in sympathetic neurons during development and is required for normal terminal axon extension, branching, and target tissue innervation, but not for sympathetic neuron survival; Egr3-deficient mice display profound physiological dysautonomia.\",\n      \"method\": \"Knockout mouse, immunohistochemistry, physiological assessment of autonomic function\",\n      \"journal\": \"Development (Cambridge, England)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — KO with specific neurodevelopmental and physiological phenotype\",\n      \"pmids\": [\"18653557\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"BDNF-mediated upregulation of NMDA receptor NR1 subunit transcription in cortical neurons requires Egr3 (together with CREB) binding to the NR1 core promoter; BDNF activates this via the MAPK pathway through TrkB, uncovering a feed-forward gene regulatory network.\",\n      \"method\": \"Promoter reporter assay, ChIP, pharmacological pathway dissection in cortical neurons\",\n      \"journal\": \"Journal of neurochemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — promoter assay + ChIP + pharmacological dissection in primary neurons\",\n      \"pmids\": [\"22035109\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Egr3 has a sympathetic neuron-autonomous role: cell-specific ablation demonstrates that Egr3 within sympathetic neurons is required for normal dendrite morphology and terminal axon branching; microarray identified downstream target genes involved in axonogenesis and dendritogenesis.\",\n      \"method\": \"Conditional knockout, microarray, genetic axon/dendrite labeling, neurite outgrowth assay in isolated neurons\",\n      \"journal\": \"The Journal of neuroscience\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — conditional KO plus isolated neuron experiments plus target gene identification\",\n      \"pmids\": [\"23467373\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Egr3 functions cell-autonomously in skeletal muscle for intrafusal fiber differentiation and fusimotor innervation homeostasis; cell-specific ablation shows Egr3-deficient myotubes are contacted by Ia afferents normally but fail to express characteristic MyHC isoforms and fail to acquire GDNF expression needed for fusimotor neuron survival.\",\n      \"method\": \"Cell-type-specific conditional knockout, genetic fate tracing, immunofluorescence, in situ hybridization\",\n      \"journal\": \"The Journal of neuroscience\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — conditional KO plus genetic tracing with defined molecular and cellular phenotype\",\n      \"pmids\": [\"25855173\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Egr3 has opposing roles in nucleus accumbens D1- vs. D2-MSNs in response to cocaine: repeated cocaine increases Egr3 in D1-MSNs (enhancing reward/locomotor responses) and decreases it in D2-MSNs (suppressing these behaviors); Egr3 binding to promoters of Camk2α, CREB, FosB, Nr4a2, Sirt1 increases in D1-MSNs while binding to G9a and Dnmt3a promoters decreases.\",\n      \"method\": \"RiboTag ribosome-associated transcriptomics, Cre-inducible AAV overexpression/knockdown, ChIP in cell-type-specific contexts\",\n      \"journal\": \"The Journal of neuroscience\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple orthogonal methods (RiboTag, AAV-Cre, ChIP) with cell-type-specific resolution\",\n      \"pmids\": [\"25995477\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Egr2 and Egr3 expressed in T regulatory cells cooperatively prevent systemic autoimmunity by supporting TGF-β3 secretion through transcriptional maintenance of Ltbp3 (latent TGF-β binding protein 3) expression in CD4+CD25-LAG3+ cells.\",\n      \"method\": \"T cell-specific double knockout mouse, adoptive transfer, TGF-β3-expressing vector rescue, gene expression analysis\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — double KO plus rescue experiments identifying molecular mechanism (Ltbp3/TGF-β3 axis)\",\n      \"pmids\": [\"27911796\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"EGR3 is a direct target of estrogen receptor alpha (ERα) in breast cancer cells; estradiol rapidly induces EGR3 mRNA (blocked by ICI 182,780 and cycloheximide-insensitive), and EGR3 in turn transcriptionally activates Nab2 and FasL promoters.\",\n      \"method\": \"Northern blot, pharmacological inhibitors (ICI 182,780, cycloheximide), stable transfection with inducible EGR3, reporter assay, microarray\",\n      \"journal\": \"Journal of molecular endocrinology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — multiple methods in one lab but no ChIP confirming ERα direct binding to EGR3 promoter\",\n      \"pmids\": [\"15171706\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"Egr3 is required for electroconvulsive stimulation-induced Bdnf expression in the hippocampus; Egr3-/- mice fail to upregulate Bdnf (exons IV and VI) after ECS, and EGR3 binding sites are present in the Bdnf promoter, suggesting direct transcriptional regulation.\",\n      \"method\": \"Knockout mouse, expression microarray, qRT-PCR, in situ hybridization, Bdnf promoter analysis\",\n      \"journal\": \"Frontiers in behavioral neuroscience\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — KO plus microarray plus in situ hybridization, but no ChIP confirming direct EGR3 binding in vivo\",\n      \"pmids\": [\"29867393\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Egr3 is required for activity-dependent induction of Htr2a (serotonin 2A receptor) mRNA: sleep deprivation fails to induce Htr2a expression in Egr3-/- mice.\",\n      \"method\": \"Knockout mouse, sleep deprivation paradigm, qRT-PCR\",\n      \"journal\": \"ACS chemical neuroscience\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — KO with defined molecular readout, replicated in 2022 paper with ChIP\",\n      \"pmids\": [\"25857407\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"EGR3 protein directly binds to the Htr2a promoter in mouse frontal cortex in vivo and drives expression via two EGR3 binding sites in the Htr2a promoter; sleep deprivation upregulates 5-HT2AR levels in an Egr3-dependent manner.\",\n      \"method\": \"Chromatin immunoprecipitation (ChIP) in vivo, in vitro reporter assay, knockout mouse, pharmacological sleep deprivation\",\n      \"journal\": \"Molecular psychiatry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — in vivo ChIP plus reporter mutagenesis plus KO mouse, orthogonal methods\",\n      \"pmids\": [\"35001075\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"EGR3 transcriptionally activates ZFP36, GADD45B, and SOCS3 by directly binding their promoter regions, thereby inhibiting EMT and suppressing bone metastasis in prostate cancer cells.\",\n      \"method\": \"ChIP, overexpression/knockdown, in vitro migration/invasion assays, in vivo mouse metastasis model\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — ChIP plus in vitro and in vivo functional assays in single lab\",\n      \"pmids\": [\"32796959\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"EGR3 directly binds the promoter region of RELN and activates its expression; EGR3 overexpression reduces neurite outgrowth in SH-SY5Y cells, which is partially reversed by RELN knockdown, placing EGR3 upstream of Reelin signaling in neurite outgrowth.\",\n      \"method\": \"ChIP, luciferase reporter assay, overexpression/knockdown, neurite outgrowth assay, DNA microarray\",\n      \"journal\": \"Journal of neurochemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 1-2 — ChIP plus reporter assay plus functional rescue, single lab\",\n      \"pmids\": [\"33113163\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"Cocaine enhances Egr3 binding to nuclear genes involved in mitochondrial function (including PGC1α and Drp1 promoters) in NAc D1-MSNs; blunting Egr3 in D1-MSNs blocks cocaine-enhanced small-sized mitochondria formation, demonstrating Egr3 regulates cocaine-induced mitochondrial morphological adaptations.\",\n      \"method\": \"ChIP, AAV-Cre knockdown, mitochondrial morphology analysis, mRNA quantification in cell-type-specific fractions\",\n      \"journal\": \"Molecular brain\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — ChIP plus cell-type-specific KD with morphological readout, single lab\",\n      \"pmids\": [\"34187517\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"EGR3 directly binds HDAC6 promoter sequences and is necessary for HDAC6 upregulation in antigen-stimulated mast cells; the EGR3-HDAC6-IL-27 axis mediates allergic inflammation in vitro and in vivo; NF-κB p65 directly regulates EGR3 expression, and miR-182-5p acts as a direct negative regulator of EGR3 (confirmed by luciferase assay).\",\n      \"method\": \"ChIP (EGR3 on HDAC6 promoter), luciferase reporter assay (miR-182-5p targeting), knockdown/overexpression, passive anaphylaxis models in vivo\",\n      \"journal\": \"Frontiers in immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — ChIP plus reporter assay plus in vivo models, single lab\",\n      \"pmids\": [\"34234781\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Egr3 promotes C2C12 myoblast proliferation via NF-κB transcriptional activity; shRNA-mediated Egr3 inhibition reduces proliferation and increases apoptosis (caspase-3/7 and PARP activation), partially rescued by pan-caspase inhibitor Z-VAD-FMK.\",\n      \"method\": \"shRNA knockdown, flow cytometry (annexin V), western blot (caspase-3/7, PARP), NF-κB reporter assay\",\n      \"journal\": \"Journal of cellular physiology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — knockdown with multiple readouts and partial rescue, single lab\",\n      \"pmids\": [\"27576048\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"Egr3 protein co-localizes with the meiotic spindle and cytosolic microtubule organizing centers (MTOCs) in mouse oocytes, accumulating around γ-tubulin; nocodazole-induced microtubule depolymerization disrupts this localization; an in vitro microtubule interaction assay shows Egr3 does not directly interact with polymerized microtubules, suggesting an indirect association.\",\n      \"method\": \"Immunofluorescence co-localization, nocodazole treatment, in vitro microtubule binding assay, confocal microscopy\",\n      \"journal\": \"PloS one\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 — localization with functional perturbation but no direct functional consequence shown\",\n      \"pmids\": [\"24722338\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"miR-27a-5p inhibits cardiac fibrosis by suppressing EGR3, a pro-fibrotic transcription factor; miR-27a-5p targeting of EGR3 was confirmed by reporter assay, and EGR3 promotes TGF-β signaling and pro-fibrotic protein secretion in cardiac fibroblasts.\",\n      \"method\": \"Luciferase reporter assay (miR-27a-5p targeting EGR3 3'UTR), in vivo TAC model with miR-27a knockout/knockdown, in vitro TGF-β signaling assays\",\n      \"journal\": \"Journal of cellular and molecular medicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — reporter assay plus in vivo and in vitro functional studies, single lab\",\n      \"pmids\": [\"33215816\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"EGR3 is a mechanosensitive transcription factor in endothelial cells required for cardiac valve formation; egr3-null zebrafish completely lack valve leaflets; mechanical forces upregulate egr3 expression in zebrafish heart and porcine valvular endothelial cells; EGR3 acts cell-autonomously in endothelial cells and its effector includes nuclear receptor Nr4a2b.\",\n      \"method\": \"Zebrafish knockout (null mutant), tissue-specific gain/loss-of-function, mechanical force manipulation, porcine endothelial cell culture, genetic epistasis with Nr4a2b\",\n      \"journal\": \"Science advances\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — complete loss-of-function phenotype plus cell-autonomous demonstration plus effector identification plus cross-species validation\",\n      \"pmids\": [\"38748804\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"EGR3 negatively regulates adipogenesis by transcriptionally controlling HDAC6 (a downstream target gene); cortisol downregulates EGR3 in adipose tissue, and EGR3 deficiency promotes adipogenesis in human adipose-derived stem cells (hADSCs) and 3T3-L1 cells.\",\n      \"method\": \"EGR3 overexpression/knockdown, adipogenesis assays in hADSCs and 3T3-L1, in vivo high-fat diet mouse model\",\n      \"journal\": \"Cell death discovery\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — overexpression/KD with functional adipogenesis readout and downstream target identification, single lab\",\n      \"pmids\": [\"38467615\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1994,\n      \"finding\": \"Egr3/Pilot is a zinc-finger transcription factor with sequence-specific DNA binding and transcriptional activity that is rapidly and transiently induced in hippocampal and cortical neurons by electroconvulsive seizure, NMDA receptor activation, and dopamine neurotransmission alterations; basal cortical expression is driven by natural synaptic activity.\",\n      \"method\": \"Differential cDNA cloning, Northern blot, in situ hybridization, pharmacological manipulation, monocular deprivation\",\n      \"journal\": \"Learning & memory\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — multiple stimulation paradigms identifying activity-dependent induction with defined temporal profile\",\n      \"pmids\": [\"10467592\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"Egr3 is required for activity-dependent expression of GADD45 family members (Gadd45b, Gadd45g), AP-1 family genes (Fos, Fosb), Cenpa, Mef2c, and Calb2 in hippocampus following ECS; many of these are genes differentially expressed in schizophrenia, linking EGR3 to DNA damage response pathways.\",\n      \"method\": \"Expression microarray (WT vs. Egr3-/- after ECS), qRT-PCR validation, bioinformatic enrichment analysis\",\n      \"journal\": \"Translational psychiatry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — KO microarray with qRT-PCR validation, single lab\",\n      \"pmids\": [\"35941129\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"EGR3 directly regulates HDAC6 gene expression and skin barrier genes (filaggrin, loricrin, involucrin) during late epidermal differentiation; EGR3 mediates regulation of epidermal differentiation complex genes through activation of enhancers and induction of enhancer RNAs.\",\n      \"method\": \"RNA-seq, chromatin analysis (enhancer RNA induction), knockdown/overexpression in keratinocytes, gene co-expression analysis\",\n      \"journal\": \"The Journal of investigative dermatology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — multiple genomic methods in one system, single lab\",\n      \"pmids\": [\"30342896\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"EGR3 is an activity-dependent zinc-finger transcription factor that directly binds GC-rich promoter elements to regulate target genes (including GABRA4, Htr2a, BDNF, RELN, ZFP36, GADD45B, SOCS3, HDAC6, Nr4a2, and Nab2) in response to upstream signals including NGF/TrkB-MAPK, NMDA receptor activation, NF-AT (in T cells), mechanical forces (in endothelial cells), and synaptic activity; it is essential for muscle spindle intrafusal fiber differentiation, sympathetic neuron target innervation, hippocampal LTP and memory, T cell anergy via Cbl-b induction, cardiac valve morphogenesis via endothelial cell-autonomous Nr4a2b signaling, and suppression of systemic autoimmunity through Ltbp3-mediated TGF-β3 production in regulatory T cells.\"\n}\n```","stage2_raw":"```json\n{\n  \"mechanistic_narrative\": \"EGR3 is an immediate-early zinc-finger transcription factor that couples diverse extracellular signals—including neurotrophins, synaptic activity, antigen-receptor engagement, estrogen, and mechanical force—to cell-type-specific gene programs governing differentiation, plasticity, and immune tolerance. It binds GC-rich promoter elements to directly activate target genes such as GABRA4, Htr2a, BDNF, NR1/GRIN1, RELN, HDAC6, ZFP36, GADD45B, and Cbl-b, linking upstream MAPK, NF-AT, and NF-κB pathways to transcriptional output [PMID:16091474, PMID:35001075, PMID:22035109, PMID:15834410, PMID:9819402]. EGR3 is essential for muscle spindle intrafusal fiber differentiation, sympathetic neuron axon branching, hippocampal LTP and memory, cardiac valve morphogenesis, and suppression of systemic autoimmunity through regulatory T cell–dependent TGF-β3 production [PMID:9731539, PMID:18653557, PMID:17350282, PMID:38748804, PMID:27911796]. In the immune system, EGR3 enforces T cell anergy by inducing the E3 ubiquitin ligase Cbl-b and cooperates with Egr2 in regulatory T cells to maintain Ltbp3 expression and prevent autoimmunity [PMID:15834410, PMID:27911796].\",\n  \"teleology\": [\n    {\n      \"year\": 1994,\n      \"claim\": \"Establishing that EGR3 is an activity-dependent immediate-early transcription factor in the brain resolved whether this zinc-finger protein was constitutive or stimulus-driven, framing all subsequent work on its regulatory logic.\",\n      \"evidence\": \"Differential cloning, Northern blot, in situ hybridization after electroconvulsive seizure, NMDA receptor activation, and monocular deprivation in rat cortex/hippocampus\",\n      \"pmids\": [\"10467592\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No direct DNA target genes identified at this stage\", \"Upstream signaling cascade not delineated\", \"Functional consequence of induction unknown\"]\n    },\n    {\n      \"year\": 1998,\n      \"claim\": \"Demonstration that Egr3-knockout mice completely lack muscle spindles established the first essential in vivo function for EGR3 and showed that its transcriptional activity in myotubes is required for intrafusal fiber differentiation, an irreplaceable developmental role.\",\n      \"evidence\": \"Gene-targeted knockout mouse with histological and in situ analysis\",\n      \"pmids\": [\"9731539\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Downstream transcriptional targets in myotubes unknown\", \"Whether role is cell-autonomous in muscle not yet tested\"]\n    },\n    {\n      \"year\": 1998,\n      \"claim\": \"Identification of NF-AT as the upstream activator of the EGR3 promoter in T cells revealed how TCR-derived signals converge on EGR3 and explained the cyclosporin A sensitivity of EGR3 induction.\",\n      \"evidence\": \"Promoter deletion mapping and NF-ATp reconstitution in fibroblasts\",\n      \"pmids\": [\"9819402\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"NF-AT binding not confirmed by ChIP\", \"Other signal inputs to EGR3 promoter not mapped\"]\n    },\n    {\n      \"year\": 2001,\n      \"claim\": \"Showing that Ia afferent innervation induces Egr3 in myotubes and that Egr3-null spindles fail to express slow-developmental myosin heavy chain clarified the nerve-to-muscle signaling axis through which Egr3 controls intrafusal differentiation.\",\n      \"evidence\": \"Nerve transection plus KO mouse analysis with immunohistochemistry and in situ hybridization\",\n      \"pmids\": [\"11401400\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Specific signal from Ia afferents to Egr3 not identified\", \"Transcriptional targets beyond MyHC isoforms unknown\"]\n    },\n    {\n      \"year\": 2004,\n      \"claim\": \"Discovery that estrogen receptor α rapidly induces EGR3, which then activates Nab2 and FasL, placed EGR3 in the estrogen-responsive transcriptional cascade in breast cancer cells.\",\n      \"evidence\": \"Northern blot with ERα antagonist and cycloheximide, reporter assays, microarray in breast cancer cells\",\n      \"pmids\": [\"15171706\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No ChIP confirming direct ERα binding at the EGR3 promoter\", \"Functional consequence for breast cancer cell phenotype not fully delineated\"]\n    },\n    {\n      \"year\": 2005,\n      \"claim\": \"Two parallel discoveries established EGR3 as both a direct transcriptional activator of neuronal target genes (GABRA4 via promoter binding) and a negative regulator of T cell activation (via Cbl-b induction), revealing its bifunctional role across cell types.\",\n      \"evidence\": \"ChIP plus KO mouse for GABRA4 in hippocampal neurons; overexpression plus KO plus in vivo tolerance assay for Cbl-b in T cells\",\n      \"pmids\": [\"16091474\", \"15834410\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Genome-wide direct target repertoire unknown\", \"Mechanism of EGR3 selectivity for different targets in different cell types unclear\"]\n    },\n    {\n      \"year\": 2006,\n      \"claim\": \"Finding that Egr3 interacts with RORγt protein and suppresses its transcriptional targets in thymocytes uncovered a non-canonical mechanism—protein-protein interaction rather than DNA binding—by which Egr3 coordinates proliferation and VDJ recombination timing.\",\n      \"evidence\": \"Co-immunoprecipitation, genetic epistasis, reporter assays in thymocytes\",\n      \"pmids\": [\"16782036\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of Egr3–RORγt interaction unknown\", \"Whether this protein-interaction mode operates in other cell types untested\"]\n    },\n    {\n      \"year\": 2007,\n      \"claim\": \"Egr3-knockout mice showed impaired early- and late-phase hippocampal LTP and deficits in multiple memory paradigms, establishing EGR3 as a non-redundant transcriptional regulator of synaptic plasticity independent of Egr1.\",\n      \"evidence\": \"KO mouse with electrophysiology (LTP) and behavioral tasks (fear conditioning, spatial learning)\",\n      \"pmids\": [\"17350282\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Downstream plasticity genes directly regulated by Egr3 in LTP not identified\", \"Contribution of specific hippocampal subregions unclear\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Demonstration that Egr3-deficient sympathetic neurons fail to extend and branch terminal axons—without dying—separated EGR3's role in axon morphogenesis from neurotrophin-dependent survival, expanding its function beyond the CNS.\",\n      \"evidence\": \"KO mouse with immunohistochemistry and physiological assessment of autonomic function\",\n      \"pmids\": [\"18653557\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct transcriptional targets mediating axon branching not identified at this point\", \"Whether defect is cell-autonomous not yet shown\"]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Mapping a BDNF→TrkB→MAPK→Egr3→NR1 transcriptional cascade revealed a feed-forward loop in which Egr3, together with CREB, drives NMDA receptor subunit expression, connecting neurotrophin signaling to glutamatergic receptor homeostasis.\",\n      \"evidence\": \"Promoter reporter, ChIP, pharmacological pathway dissection in primary cortical neurons\",\n      \"pmids\": [\"22035109\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether this cascade operates during LTP in vivo not tested\", \"Relative contributions of Egr3 vs. CREB not resolved\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Conditional knockout demonstrated a sympathetic neuron-autonomous requirement for Egr3 in dendrite morphology and axon branching and identified downstream target genes involved in axonogenesis, resolving the cell-autonomy question from the 2008 study.\",\n      \"evidence\": \"Conditional KO, microarray, genetic labeling, neurite outgrowth assay in isolated neurons\",\n      \"pmids\": [\"23467373\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct Egr3 binding to identified target promoters not confirmed by ChIP\", \"Functional rescue with individual targets not performed\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Three concurrent advances—(1) muscle-specific conditional KO proving cell-autonomous Egr3 function for intrafusal differentiation and GDNF-dependent fusimotor innervation, (2) cell-type-resolved cocaine responses showing opposing Egr3 roles in D1- vs D2-MSNs, and (3) Egr3-dependent Htr2a induction after sleep deprivation—collectively broadened the Egr3 target gene network and demonstrated context-dependent transcriptional output.\",\n      \"evidence\": \"Muscle conditional KO with genetic tracing; RiboTag + AAV-Cre + ChIP in NAc MSNs; KO mouse with sleep deprivation\",\n      \"pmids\": [\"25855173\", \"25995477\", \"25857407\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Chromatin-level mechanism of cell-type-specific target gene selection unknown\", \"Direct GDNF promoter binding by Egr3 not demonstrated\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Discovery that Egr2/Egr3 in regulatory T cells prevent autoimmunity by maintaining Ltbp3-dependent TGF-β3 production identified a discrete immune-tolerance mechanism and explained why T cell-specific Egr loss causes systemic inflammation.\",\n      \"evidence\": \"T cell-specific double KO, adoptive transfer, TGF-β3-vector rescue, gene expression analysis\",\n      \"pmids\": [\"27911796\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Individual contribution of Egr3 vs Egr2 to Ltbp3 regulation not separated\", \"Whether Egr3 directly binds Ltbp3 promoter not shown\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Identification of BDNF and HDAC6 as Egr3-dependent targets in hippocampus and epidermis, respectively, expanded its functional repertoire to activity-dependent neurotrophic signaling and epidermal barrier gene regulation.\",\n      \"evidence\": \"KO mouse microarray/qRT-PCR for Bdnf; RNA-seq/enhancer RNA analysis/KD in keratinocytes for HDAC6\",\n      \"pmids\": [\"29867393\", \"30342896\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct EGR3 ChIP on Bdnf promoter in vivo not performed\", \"Enhancer RNA mechanism not fully dissected\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"ChIP-verified direct binding to ZFP36, GADD45B, SOCS3, and RELN promoters showed that EGR3 activates anti-metastatic programs (EMT suppression in prostate cancer) and Reelin signaling (neurite outgrowth modulation), further diversifying its downstream target network.\",\n      \"evidence\": \"ChIP, overexpression/KD, in vivo metastasis model; ChIP, reporter assay, neurite outgrowth assay in SH-SY5Y cells\",\n      \"pmids\": [\"32796959\", \"33113163\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Physiological relevance of EGR3-RELN axis in intact brain not tested\", \"Anti-metastatic function not validated in patient-derived models\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"EGR3 was shown to directly activate HDAC6 in mast cells (driving allergic inflammation via IL-27) and to regulate mitochondrial morphology genes (PGC1α, Drp1) in NAc D1-MSNs upon cocaine exposure, revealing specialized transcriptional programs in innate immune and reward circuits.\",\n      \"evidence\": \"ChIP on HDAC6 promoter in mast cells, passive anaphylaxis model; ChIP on PGC1α/Drp1, AAV-Cre knockdown with mitochondrial morphology in D1-MSNs\",\n      \"pmids\": [\"34234781\", \"34187517\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Selectivity mechanism for HDAC6 activation in mast cells vs other cell types unclear\", \"Mitochondrial functional consequences beyond morphology not assessed\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"In vivo ChIP confirmed direct EGR3 binding to the Htr2a promoter in frontal cortex and demonstrated EGR3-dependent activity-responsive gene programs (GADD45 family, AP-1 family, Mef2c) in hippocampus, consolidating EGR3 as a master regulator of activity-dependent transcription.\",\n      \"evidence\": \"In vivo ChIP with reporter mutagenesis for Htr2a; expression microarray in WT vs Egr3-/- hippocampus after ECS\",\n      \"pmids\": [\"35001075\", \"35941129\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Genome-wide ChIP-seq for EGR3 in brain not yet reported\", \"Causal role of individual target genes in LTP/memory phenotype untested\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Demonstration that egr3-null zebrafish completely lack cardiac valve leaflets and that mechanical forces induce EGR3 in endothelial cells, where it acts cell-autonomously through Nr4a2b, revealed an unexpected mechanosensitive role in cardiovascular morphogenesis conserved across vertebrates.\",\n      \"evidence\": \"Zebrafish null mutant, tissue-specific gain/loss-of-function, mechanical force manipulation, porcine endothelial cell validation, genetic epistasis\",\n      \"pmids\": [\"38748804\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Mechanotransduction pathway upstream of EGR3 in endothelial cells not fully mapped\", \"Human cardiac valve disease association not established\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"A genome-wide map of direct EGR3 binding sites across cell types (ChIP-seq), structural understanding of how EGR3 selects among its many target promoters in a cell-type-specific manner, and in vivo validation of its role in human disease remain open.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"No genome-wide ChIP-seq published for EGR3 in any cell type\", \"Structural basis for target selectivity vs other Egr family members unknown\", \"Human genetic disease causation not established\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [0, 3, 8, 16, 17, 26]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 3, 5, 8, 11, 16, 17, 18, 24, 26]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [3, 8, 16, 22, 26]},\n      {\"term_id\": \"GO:0005815\", \"supporting_discovery_ids\": [22]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"GO:0005815\", \"supporting_discovery_ids\": []},\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [0, 3, 5, 8, 16, 17, 24, 26]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [2, 4, 12]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [0, 1, 10, 24]},\n      {\"term_id\": \"R-HSA-112316\", \"supporting_discovery_ids\": [6, 7, 9, 11, 26]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\n      \"RORγt\",\n      \"CREB\",\n      \"NF-ATp\",\n      \"Nr4a2b\"\n    ],\n    \"other_free_text\": []\n  }\n}\n```"}