Affinage

EMX2

Homeobox protein EMX2 · UniProt Q04743

Length
252 aa
Mass
28.3 kDa
Annotated
2026-06-09
100 papers in source corpus 43 papers cited in narrative 40 extracted findings
Cross-family judge vs UniProt: tie faithfulness: 9/9 claims corpus-supported (100%)

Mechanistic narrative

Synthesis pass · prose summary of the discoveries below

EMX2 is a homeodomain transcription factor that acts as a graded positional determinant across multiple developing tissues, encoding spatial identity by both activating and repressing context-specific target genes (PMID:10764649, PMID:10862700, PMID:12196586, PMID:15294144). In the neocortex it is expressed in a countergradient opposed to PAX6, and the two factors mutually repress one another to specify cortical area identity—loss of EMX2 expands rostral and contracts caudal areas, while the converse occurs for PAX6, and high-level expression of at least one functional allele of either factor is required to commit the dorsal telencephalon to corticogenesis rather than basal ganglia fate (PMID:10764649, PMID:10862700, PMID:12196586, PMID:15294144, PMID:12118260, PMID:11739261). EMX2 enacts arealization by negatively regulating the FGF8 signaling source and by directly repressing Wnt1, with FGF8 sequestration rescuing the Emx2-mutant area shift (PMID:12872126, PMID:12668639). Its own graded expression is set by cooperative Wnt and BMP signaling through Tcf and Smad sites in a forebrain enhancer downstream of the coding region (PMID:12070081, PMID:20667915). EMX2 functions largely as a direct, dose-sensitive transcriptional repressor and activator: it represses Sox2 telencephalic enhancers by competing with and binding the POU factor Brn2 (PMID:22495934), cooperates with DMRT factors to repress the Gsx2 ventral enhancer and maintain dorsal identity (PMID:30143575), heterodimerizes with Pbx1 to activate Alx1 in skeletal development (PMID:20627960), and directly activates a teneurin-1 alternate promoter (PMID:21651764); HOXA10 directly represses EMX2 in the reproductive tract (PMID:12482956). EMX2 also governs neural stem-cell division mode, promoting symmetric, multipotential divisions in cortical and adult neural precursors in a manner tied to a mutually stimulating loop with canonical Wnt signaling (PMID:11923200, PMID:11922140, PMID:15800025). In mechanosensory hair cells, regionally restricted EMX2 establishes the line of polarity reversal that produces mirror-image hair-bundle orientations: it polarizes the orphan receptor GPR156 to trigger Gαi-dependent 180° bundle reversal, pre-patterns centriole migration, and represses the kinase STK32A in the complementary cell population, with this polarity required for bidirectional vestibular sensitivity and behavior (PMID:28266911, PMID:34001891, PMID:32965215, PMID:37144879, PMID:36280667). EMX2 is additionally required for ureteric bud branching during kidney development (PMID:9165114) and for gonadal epithelial polarity and migration, the latter via suppression of EGFR (PMID:20962046). De novo EMX2 variants cause idiopathic hypogonadotropic hypogonadism associated with impaired GnRH neuron migration (PMID:41765865).

Mechanistic history

Synthesis pass · year-by-year structured walk · 14 steps
  1. 1997 High

    Established the first essential developmental requirements for EMX2, defining it as an organ-intrinsic factor in kidney and archipallium morphogenesis rather than a purely cortical gene.

    Evidence Knockout mice with in situ markers and reciprocal explant co-culture for kidney; histological analysis for hippocampus/dentate gyrus

    PMID:9006071 PMID:9012509 PMID:9165114

    Open questions at the time
    • Direct transcriptional targets in ureteric bud not defined
    • Molecular basis of bud-intrinsic defect not resolved at the binding-site level
  2. 2000 High

    Showed EMX2 and PAX6 form opposing countergradients that specify cortical area identity, framing arealization as a quantitative transcription-factor balance.

    Evidence Knockout mouse analysis with area-specific molecular markers and thalamocortical axon tracing; Reelin/radial glia analysis in the same period

    PMID:10648716 PMID:10764649 PMID:10862700 PMID:12196586

    Open questions at the time
    • Direct downstream effectors of arealization not yet identified
    • Whether the gradient acts cell-autonomously not resolved
  3. 2002 High

    Demonstrated that EMX2 and PAX6 mutually repress and are jointly required to commit dorsal telencephalon to cortical fate, and that EMX2 itself is a direct Wnt/BMP target, placing it within an upstream signaling-to-identity circuit.

    Evidence Emx2/Pax6 double-mutant epistasis, pre-neuronogenic marker analysis, and transgenic enhancer mutagenesis of Tcf/Smad sites

    PMID:11739261 PMID:12070081 PMID:12118260

    Open questions at the time
    • Direct PAX6-EMX2 binding to each other's loci not demonstrated
    • Co-regulatory partners at the enhancer not identified
  4. 2003 High

    Defined the direct effector arm of cortical patterning by placing EMX2 upstream of FGF8 and identifying Wnt1 as a direct repression target, and showed HOXA10 directly represses EMX2 in the reproductive tract.

    Evidence In vivo electroporation with dominant-negative FGFR rescue, Wnt1 enhancer deletion and phenocopy transgenics, and EMSA/footprinting/mutagenesis of the EMX2 promoter by HOXA10

    PMID:12482956 PMID:12668639 PMID:12872126

    Open questions at the time
    • Direct EMX2 binding at the FGF8 locus not shown
    • Wnt1 site occupancy by EMX2 inferred from deletion rather than direct binding
  5. 2004 High

    Established EMX2 dose as the determinant of cortical area size via PAX6 repression, and uncovered a non-nuclear axonal pool of EMX2 interacting with eIF4E, hinting at local translational roles.

    Evidence Nestin-Emx2 transgenic overexpression versus heterozygous knockout with area markers; subcellular fractionation, Co-IP and pull-down in olfactory axons

    PMID:15247416 PMID:15294144

    Open questions at the time
    • Functional consequence of the EMX2-eIF4E interaction not demonstrated
    • Whether axonal EMX2 affects specific mRNA translation unknown
  6. 2005 High

    Connected EMX2 to neural progenitor proliferation and division mode through a mutually stimulating loop with canonical Wnt signaling, explaining region-selective size control of occipital cortex and hippocampus.

    Evidence Adult and embryonic neural stem cell manipulation (OE and KO) with division-mode quantification, and Wnt-pathway reactivation rescue in Emx2-/- mutants

    PMID:11922140 PMID:11923200 PMID:15800025

    Open questions at the time
    • Molecular link between EMX2 and the cell-cycle machinery not defined
    • Direct Wnt-pathway target genes mediating the loop not identified
  7. 2011 High

    Resolved direct DNA-binding mechanisms by showing EMX2 heterodimerizes with Pbx1 to activate Alx1 and directly activates a teneurin-1 alternate promoter, defining EMX2 as a sequence-specific bidirectional regulator beyond the telencephalon.

    Evidence Heterodimer DNA binding, in vivo ChIP, luciferase reporters and compound mutant phenotypes; 5'RACE, ChIP and site mutagenesis for teneurin-1

    PMID:20627960 PMID:21651764

    Open questions at the time
    • Full target gene repertoire not catalogued
    • Cofactor requirements outside Pbx1 not defined
  8. 2012 High

    Clarified EMX2's repressive logic by showing it competes with and physically binds the POU activator Brn2 to dose-dependently repress Sox2 enhancers, linking EMX2 to neural progenitor identity control.

    Evidence EMSA with overlapping site mutagenesis, Emx2-Brn2 Co-IP, reporter assays, and in vivo genetic rescue of Sox2 hypomorphs

    PMID:22495934

    Open questions at the time
    • Genome-wide extent of EMX2/POU competition unknown
    • Structural basis of EMX2-Brn2 interaction not resolved
  9. 2017 High

    Identified EMX2 as the master regulator of hair-bundle polarity reversal, establishing mirror-image mechanosensory orientation maps through downstream heterotrimeric G-protein signaling.

    Evidence Conditional knockout and gain-of-function in mouse and zebrafish with live imaging and G-protein perturbation

    PMID:28266911

    Open questions at the time
    • Direct G-protein-pathway target genes not yet identified at this stage
    • Mechanism of regional EMX2 restriction not defined
  10. 2021 High

    Defined the effector cascade for polarity reversal as EMX2 polarizing GPR156 to activate Gαi signaling, converting a transcription-factor boundary into a cell-biological 180° reorientation.

    Evidence Conditional Emx2 KO, GPR156 mutants, GPR156 immunolocalization, and Gαi pathway epistasis in mouse and zebrafish

    PMID:34001891

    Open questions at the time
    • Whether GPR156 is a direct transcriptional target of EMX2 not established
    • Ligand of GPR156 unknown
  11. 2023 Medium

    Completed the bipartite polarity logic by identifying STK32A as an EMX2-repressed kinase that orients bundles in the complementary EMX2-negative cells via GPR156 apical localization.

    Evidence Emx2 and Stk32a conditional KO and ectopic expression with GPR156 localization and bundle-orientation readouts

    PMID:37144879

    Open questions at the time
    • Direct EMX2 occupancy at the Stk32a locus not shown
    • Single lab, single readout system
  12. 2024 High

    Extended EMX2 polarity function to organ-level patterning and behavior, showing prosensory pre-determination of the line of polarity reversal and its requirement for bidirectional vestibular sensitivity.

    Evidence Emx2-CreERt2 lineage tracing in wild-type and Dreher mutants; conditional Emx2 and Tmie KO with vestibular behavioral assays; centriole live imaging in earlier work

    PMID:32965215 PMID:36280667 PMID:38682291

    Open questions at the time
    • Upstream signals that regionally restrict prosensory EMX2 not defined
    • How LPR positioning is read out into afferent wiring not fully resolved
  13. 2024 Medium

    Revealed EMX2 as a deeply conserved positional program co-opted in evolution and required for ciliogenesis, broadening its role beyond canonical neural and urogenital contexts.

    Evidence Marsupial in-pouch transgenics with comparative genomics for patagium; zebrafish loss-of-function with prostaglandin-pathway perturbation and basal-body imaging

    PMID:38658750 PMID:39687012

    Open questions at the time
    • Direct EMX2 targets in cilia/prostaglandin pathway not defined
    • Conservation of ciliogenic role in mammals not tested
  14. 2025 Medium

    Linked EMX2 to human disease by showing de novo variants cause idiopathic hypogonadotropic hypogonadism through impaired GnRH neuron migration.

    Evidence Emx2 knockdown in nasal explants and Emx2 KO mouse GnRH neuron localization

    PMID:41765865

    Open questions at the time
    • Molecular targets controlling GnRH migration not identified
    • Functional impact of specific variants on EMX2 activity not characterized

Open questions

Synthesis pass · forward-looking unresolved questions
  • How EMX2 selects between activator and repressor modes and which cofactors and direct genomic targets account for its tissue-specific outputs across cortex, inner ear, kidney, gonad and cilia remain unresolved.
  • No genome-wide direct target map integrating its diverse roles
  • Determinants of activator-versus-repressor switching unknown
  • Functional significance of cytoplasmic/translational interactions (eIF4E, Cnot6l, QkI-7) unvalidated in vivo

Mechanism profile

Synthesis pass · controlled-vocabulary classification · explore literature graph →
Molecular activity
GO:0140110 transcription regulator activity 7 GO:0003677 DNA binding 4
Localization
GO:0005634 nucleus 3
Pathway
R-HSA-74160 Gene expression (Transcription) 5 R-HSA-1266738 Developmental Biology 4 R-HSA-162582 Signal Transduction 4
Partners
DMRT5EIF4EGPR156HOXA10LDB1PAX6PBX1POU3F2

Evidence

Reading pass · 40 per-paper findings extracted from the source corpus
Year Finding Method Journal Conf PMIDs
2000 EMX2 and PAX6 are expressed in opposing countergradients in the neocortical ventricular zone and cooperate to regulate arealization of the neocortex; Emx2 loss-of-function causes rostral areas to expand and caudal areas to contract, while Pax6 mutants show the opposite, establishing that these two transcription factors specify area identity in opposing manners. Genetic knockout mouse analysis with molecular markers and area-specific thalamocortical axon tracing Science High 10764649 10862700 12196586
1997 EMX2 is essential for ureteric bud functions during metanephrogenesis; in Emx2 knockout mice the ureteric bud fails to dilate and branch, downstream signaling markers (Pax-2, c-ret, GDNF, Wnt-4) are greatly reduced, and explant co-culture experiments showed that the defect is intrinsic to the ureteric bud (mutant bud cannot induce wild-type mesenchyme transformation, but wild-type bud can rescue mutant mesenchyme). Knockout mouse analysis, in situ hybridization, explant co-culture assays Development High 9165114
1997 Emx2 is required for development of archipallial structures including the dentate gyrus, hippocampus, and medial limbic cortex; Emx2 null mice lack the dentate gyrus and show reduced hippocampus, with defects traceable to the early neuroepithelium, demonstrating Emx2's role in delineating the palliochoroidal boundary and hippocampal neurogenesis. Gene targeting/knockout in mice, histological and cytoarchitectural analysis Development High 9006071 9012509
2002 Wnt and BMP signaling cooperatively regulate graded Emx2 expression in the dorsal telencephalon via an enhancer containing Tcf and Smad binding sites; mutation of these sites abolishes telencephalic enhancer activity and ectopic Wnt/BMP signaling ectopically activates the enhancer, establishing Emx2 as a direct transcriptional target of both pathways. Transgenic enhancer analysis, site-directed mutagenesis of Tcf/Smad binding sites, ectopic pathway activation assays Development High 12070081
2003 EMX2 patterns the neocortical area map by negatively regulating FGF8 levels; overexpressing Emx2 only altered the area map when ectopic Emx2 overlapped the FGF8 source, excess Emx2 decreased FGF8 levels while Emx2-null mice showed increased FGF8, and cortical domain shifts in Emx2 mutants were rescued by sequestering excess FGF8 with a truncated FGF receptor, placing EMX2 upstream of FGF8 signaling in area map patterning. Electroporation-mediated gene transfer in living mouse embryos, FGF8 level quantification, dominant-negative FGF receptor rescue experiment Nature Neuroscience High 12872126
2004 EMX2 levels in cortical progenitors disproportionately specify sizes and positions of primary cortical areas; nestin-Emx2 transgenic mice overexpressing EMX2 shift sensory and motor areas rostrolaterally, opposite changes occur in Emx2 heterozygous knockouts, and EMX2 represses PAX6 expression in rostral progenitors, suggesting that EMX2 repression of PAX6-specified rostral identities contributes to area size changes. Nestin-Emx2 transgenic overexpression mice, heterozygous knockout comparison, area-specific molecular marker analysis, PAX6 expression analysis Neuron High 15294144
2003 EMX2 is a direct transcriptional repressor of Wnt1 expression in the developing mammalian telencephalon; a putative EMX2 DNA-binding site was deleted from the Wnt1 enhancer, ectopic Wnt1 was found in Emx2-/- mice, and transgenic misexpression of Wnt1 reproduced leptomeningeal heterotopias and Reelin/calretinin cell distribution defects matching Emx2-null animals. Knockout mouse analysis, transgenic Wnt1 misexpression, enhancer deletion analysis Development Medium 12668639
2002 High-level expression of at least one functional allele of either Emx2 or Pax6 in the dorsal telencephalon is necessary and sufficient to stably activate corticogenesis and repress adjacent striatal morphogenesis, as shown by Emx2(-/-) Pax6(Sey/Sey) double mutants in which cerebral cortex is converted to basal ganglia. Double-mutant mouse genetic epistasis analysis Nature Neuroscience High 12118260
2002 Emx2 and Pax6 mutually repress each other's expression and are each required to establish the WNT signaling center at the medial-caudal edge of the cortical field; their absence impairs early cortical regionalization before neuronogenesis is complete. Knockout mouse analysis, in situ hybridization for molecular markers at pre-neuronogenic stages Cerebral Cortex Medium 11739261
2002 Abolishing Emx2 expression in adult neural stem cells greatly enhances their proliferation rate while increasing Emx2 expression reduces it; Emx2 increases the frequency of symmetric divisions generating two stem cells when it is reduced and decreases it when overexpressed, establishing Emx2 as a regulator of symmetric vs. asymmetric cell division mode in adult neural stem cells. Adult neural stem cell isolation, retroviral Emx2 overexpression, Emx2-/- analysis, cell division frequency quantification Development High 11923200
2000 Loss of Emx2 impairs Reelin signaling in the neocortex: Reelin products are absent in the neocortical marginal zone when the cortical plate forms, leading to impaired radial glia development and abnormal neuronal migration patterns in the cortical plate. Emx2-null mouse analysis, Reelin immunohistochemistry, radial glia and cortical plate migration analysis Journal of Neuroscience Medium 10648716
2004 EMX2 homeodomain protein is present in the axonal compartment of olfactory sensory neurons and directly interacts with eukaryotic translation initiation factor 4E (eIF4E) in olfactory axons; Emx2 and eIF4E co-immunoprecipitate from olfactory tissue extracts and interact directly in pull-down experiments, suggesting a non-nuclear role in local translational control. Subcellular fractionation, immunohistochemistry, co-immunoprecipitation, pull-down assay, synaptosomal fractionation PNAS Medium 15247416
2003 HOXA10 transcriptionally represses EMX2 in the peri-implantation reproductive tract; HOXA10 protein binds a 150-bp element in the EMX2 5' regulatory region at a consensus HOXA10 binding site (demonstrated by EMSA and DNase I footprinting), and site-directed mutagenesis of this site abolishes both binding and transcriptional repression. Northern analysis, in situ hybridization, transient transfection deletional analysis, EMSA, DNase I footprinting, site-directed mutagenesis Molecular and Cellular Biology High 12482956
2001 Emx2 retroviral transduction in cerebral cortex precursors promotes symmetric cell divisions generating large multipotent clones containing both neurons and glial cells; Emx2-/- mice show reduced symmetric divisions in vivo, establishing Emx2 as the first cell-intrinsic determinant able to instruct CNS precursors toward a multipotential fate. Retroviral transduction of cortical precursors, clonal analysis, Emx2-/- in vivo cell division analysis Molecular and Cellular Neurosciences Medium 11922140
2003 Adenovirus-mediated ectopic Emx2 expression in the rat embryonic neocortex results in aberrant intracortical pathfinding and areal targeting of thalamocortical axons from the dorsal lateral geniculate nucleus, indicating that EMX2 imparts positional cues associated with caudal areas to influence TCA targeting. Adenoviral Emx2 overexpression in embryonic cortex, carbocyanine dye tracing of thalamocortical axons Cerebral Cortex Medium 12764041
2005 Emx2 forms a mutually stimulating loop with canonical Wnt signaling in the occipito-hippocampal anlage; in Emx2-/- mutants this loop collapses, causing premature cell-cycle exit and selective size reduction of occipital cortex and hippocampus; reactivation of canonical Wnt signaling in Emx2-/- mutants rescues a subset of molecular abnormalities and corrects differentiation rates. Emx2-/- knockout mouse analysis, Wnt pathway activation rescue experiment, cell-cycle analysis, molecular marker profiling Cerebral Cortex Medium 15800025
2010 Emx2 and Foxg1 each independently inhibit gliogenesis and promote neuronogenesis in cortical precursors via distinct mechanisms, as determined by lentiviral overexpression and multiplex cytofluorometry of cell-type-specific fluorescent reporters. Lentiviral overexpression in embryonic cortical progenitors, cell-type-specific fluorescent reporters, multiplex cytofluorometry Stem Cells Medium 20506244
2010 Emx2 is required for normal epithelial cell polarity in the developing gonad; Emx2 KO embryonic gonads show aberrant tight junction assembly and Emx2 suppresses Egfr gene expression; loss of Emx2 leads to upregulated EGFR, elevated Src tyrosine phosphorylation, and impaired migration of gonadal epithelial cells into the mesenchyme. Emx2 knockout mouse analysis, microarray, in vitro cell culture (M15 cells), immunostaining for tight junction components Endocrinology Medium 20962046
2010 Pbx1 and Emx2 bind specific DNA sequences as heterodimers and cooperatively activate transcription of Alx1 via a conserved upstream regulatory element; in vivo ChIP confirmed Pbx1 and Emx2 binding to this element in developing scapula, and compound Pbx1;Emx2 mutants lack Alx1 expression and fail to develop the scapula blade. Compound mutant mouse analysis, co-immunoprecipitation/heterodimer DNA binding assay, ChIP, luciferase reporter assay Development High 20627960
2011 Human teneurin-1 is a direct transcriptional target of EMX2 at a newly identified conserved alternate promoter; EMX2 binds a homeobox binding site within this promoter element (demonstrated by in vivo ChIP in chick embryos), mutation of this site reduces promoter activity in reporter assays in vitro and in electroporated chick embryos, and EMX2 specifically upregulates the endogenous alternate teneurin-1 transcript. 5'RACE, luciferase reporter assays, site-directed mutagenesis, in ovo chick electroporation, ChIP BMC Developmental Biology High 21651764
2012 Emx2 directly represses the activity of Sox2 telencephalic enhancers in a dose-dependent manner; Emx2 binds overlapping Emx2/POU-binding sites by EMSA, preventing binding of the POU transcriptional activator Brn2, and Emx2 also directly interacts with Brn2 protein without DNA binding. Loss of one Emx2 allele increases Sox2 levels in hippocampal primordium in vivo. EMSA, co-immunoprecipitation (Emx2-Brn2 direct interaction), luciferase reporter assays, in vivo genetic rescue (Emx2 heterozygosity rescues Sox2 hypomorphic hippocampal defects) Nucleic Acids Research High 22495934
2017 Transcription factor EMX2 mediates hair bundle polarity reversal in a restricted subset of mechanosensory hair cells, establishing mirror-image bundle orientation patterns in vestibular maculae and zebrafish neuromasts; downstream effectors of Emx2 control bundle polarity cell-autonomously via heterotrimeric G proteins. Emx2 conditional knockout, gain-of-function in zebrafish and mouse, live imaging, G-protein pathway perturbation eLife High 28266911
2021 EMX2 polarizes the distribution of the orphan GPCR GPR156 in hair cells, enabling GPR156 to signal through Gαi and trigger a 180° reversal of hair cell orientation; GPR156-Gαi-mediated reversal is essential for establishing mirror-image hair cell orientations in mouse otolith organs and zebrafish lateral line. Conditional knockout of Emx2, GPR156 mutants, immunostaining for GPR156 localization, genetic epistasis of Gαi pathway Nature Communications High 34001891
2018 Emx2 regulates directional selectivity of afferent neurons in zebrafish neuromasts by two distinct processes: regulating hair bundle orientation in hair cells and selecting afferent neuronal targets; in emx2 knockout and gain-of-function neuromasts, innervation patterns and physiological responses of afferent neurons both depend on the presence or absence of Emx2. Emx2 knockout and gain-of-function in zebrafish, electrophysiology of afferent neurons, immunostaining of innervation patterns eLife High 29671737
2020 Emx2 pre-patterns hair cells prior to centriole migration to establish opposite bundle orientation; live imaging shows centrioles migrate toward opposite directions in Emx2-positive vs. negative utricular hair cells, and ectopic Emx2 can reverse centriole trajectory within hours during a critical developmental time window. Live imaging of GFP-labeled centrioles in embryonic utricles, ectopic Emx2 electroporation with defined time-window analysis eLife Medium 32965215
2020 In zebrafish neuromasts, Emx2 expression in hair cells is initiated in hair-cell progenitors and is subsequently downregulated in one sibling hair cell via Notch1a receptor signaling, establishing planar bipolarity through a two-tiered mechanism; Emx2 asymmetry does not result from auto-regulatory feedback. Single-cell RNA sequencing, diffusion pseudotime analysis, lineage tracing, mutagenesis of Notch1a, Emx2-deficient analysis Current Biology Medium 32109392
2022 Regional expression of Emx2 in otolith organs establishes the line of polarity reversal (LPR) and is required for bidirectional sensitivity and segregated afferent innervation; conditional knockout of Emx2 in hair cells eliminates LPR, and specifically abolishing mechanotransduction in Emx2-expressing hair cells (Tmie cKO) also eliminates bidirectional sensitivity, demonstrating that LPR is required for normal vestibular behaviors (swimming, balance beam). Conditional knockout of Emx2 in hair cells, Tmie conditional knockout, vestibular behavioral assays Nature Communications High 36280667
2018 DMRT3, DMRT5, and EMX2 cooperatively repress the ventral telencephalon-specific enhancer in the Gsx2 locus to maintain cortical progenitor dorsal identity; all three transcription factors bind this Gsx2 enhancer, and Emx2;Dmrt5 double KO produces a phenotype similar to Dmrt3;Dmrt5 double KO (ventralized dorsal telencephalon). Double knockout genetic epistasis, Dmrt5 misexpression, chromatin binding assays at Gsx2 enhancer, gene expression analysis Journal of Neuroscience Medium 30143575
2023 STK32A is identified as a downstream effector negatively regulated by EMX2 in inner ear hair cells; STK32A is expressed in the EMX2-negative hair cell group complementary to EMX2, is required to align bundle polarity with PCP proteins in EMX2-negative regions, and is sufficient to reorient bundles when ectopically expressed in EMX2-positive regions; STK32A reinforces LPR formation by regulating apical localization of GPR156. Mouse Emx2 conditional KO, Stk32a KO, ectopic Stk32a overexpression, immunostaining for GPR156 localization, bundle orientation analysis eLife Medium 37144879
2011 Pax2 is a direct regulator of Emx2 expression in the Wolffian duct, as demonstrated in Pax2+/-;Emx2+/- compound heterozygous mice that develop urinary tract anomalies; genetic cooperativity between Pax2 and Emx2 in ureter development is established. Compound heterozygous mouse analysis, expression analysis of Emx2 in Pax2 mutants PloS One Low 21731775
2010 Emx2OS antisense RNA contributes to post-transcriptional downregulation of Emx2 sense transcript in cortical precursors and neurons, possibly by a Dicer-promoted mechanism; Emx2 knockout dramatically impairs Emx2OS transcription, suggesting a reciprocal Emx2/Emx2OS regulatory loop; in rhombo-spinal precursors, delivered Emx2OS stimulates ectopic Emx2 expression. Lentiviral delivery, RNAi, morpholino knockdown, TetON inducible expression, quantitative RT-PCR in primary cortical precursor cultures PloS One Medium 20066053
2010 The same enhancer immediately 3' downstream of the last coding exon of Emx2 (FB enhancer) drives all Emx2 forebrain expression (caudal forebrain primordium at E8.5, dorsal telencephalon E9.5-10.5, and cortical ventricular zone after E12.5); Otx, Tcf, Smad and two additional binding sites are essential for all these activities; Emx2 expression under this enhancer is solely responsible for diencephalon development. Transgenic enhancer reporter analysis, enhancer mutant mouse, binding site mutagenesis Development Medium 20667915
2016 Emx2 regulates pluripotency-differentiation transition in male gonocytes via the FGF9/NODAL pathway; conditional Emx2 knockdown in somatic cells prevents germ cell differentiation, and FGF9 and NODAL signaling are abnormally elevated; pharmacological inhibition of FGF9 (SU5402) or NODAL (SB431542) signaling restores germ cell differentiation in vitro from Emx2-knockdown testes. Tamoxifen-inducible Cre-loxP Emx2 conditional knockdown, pharmacological rescue with SU5402 and SB431542, in vitro EG colony formation assay Reproduction Medium 27002001
2019 Novel yeast two-hybrid screen identified Cnot6l and QkI-7 as potential EMX2-binding partners involved in mRNA metabolism (including splicing, export, translation, and destruction). Yeast two-hybrid screen using embryonic mouse cDNA library The Protein Journal Low 30628007
2010 In Emx2-/- mice, Bmp4 expression domain is expanded and Fgfr1 and Prox1 are expressed in fewer cells in the cochlear sensory epithelium, identifying these as downstream targets of Emx2 in inner ear development; Emx2-/- mice have ~60% fewer auditory hair cells and absent planar cell polarity reversal in vestibular maculae. Emx2 null mouse analysis, in situ hybridization and immunostaining for downstream markers, hair cell counting and polarity measurement Developmental Biology Medium 20152827
2025 EMX2 coordinates with the LIM domain-binding protein Ldb1 to activate and repress downstream transcriptional targets during cortical development; identification of this interaction partner was obtained through analysis of EMX2 interaction partners, and Emx2 and Dmrta2 share limited but key common direct transcriptional targets including regulators of cortical development. Molecular and genetic approaches including interaction partner identification, double KO analysis, gene expression profiling Journal of Neuroscience Low 40456611
2024 Emx2 is a critical upstream regulator of patagium (gliding membrane) development in marsupials; Emx2 expression is elevated in gliding species due to lineage-specific cis-regulatory evolution; mouse functional experiments show evidence that Emx2 expression patterns in gliders were modified from a pre-existing Emx2 program in all mammals. Comparative genomics, epigenomics, transcriptomics, in-pouch marsupial transgenics, mouse functional experiments Nature Medium 38658750
2024 EMX2 lineage tracing reveals that LPR positioning in vestibular maculae is pre-determined in the prosensory domain before hair cell specification; Emx2-CreERt2 lineage labels cells along one side of the LPR in mature utricle and saccule, and in Dreher mutants (unsegregated utriculo-saccular organ) Emx2-lineage traces a continuous field on one side of the fused organ. Emx2-CreERt2 genetic lineage tracing in wild-type and Dreher mutant mice, tamoxifen induction at prosensory stage Development Medium 38682291
2024 emx2 is essential for cilia development across multiple embryonic tissues in zebrafish; emx2 deficiency causes decreased multiciliated cells in the kidney, impairs basal body positioning, and emx2 regulates prostaglandin biosynthesis in ciliogenesis through key factors ppargc1a, ptgs1, and PGE2. emx2 zebrafish mutant/morphant analysis, renal lineage analysis, prostaglandin pathway perturbation, basal body imaging iScience Medium 39687012
2025 De novo EMX2 variants cause IHH; knockdown of Emx2 in nasal explants attenuates GnRH cell migration, and GnRH cells are confined to nasal regions in Emx2 knockout mice, consistent with IHH pathogenesis involving impaired GnRH neuron migration. Emx2 knockdown in organotypic nasal explants, Emx2 KO mouse GnRH neuron localization analysis Genetics in Medicine Medium 41765865

Source papers

Stage 0 corpus · 100 papers · ranked by NIH iCite citations
Year Title Journal Citations PMID
2000 Regulation of area identity in the mammalian neocortex by Emx2 and Pax6. Science (New York, N.Y.) 434 10764649
1997 Defects of urogenital development in mice lacking Emx2. Development (Cambridge, England) 341 9165114
1997 Emx1 and Emx2 functions in development of dorsal telencephalon. Development (Cambridge, England) 312 9006071
1996 Dentate gyrus formation requires Emx2. Development (Cambridge, England) 214 9012509
2000 Area identity shifts in the early cerebral cortex of Emx2-/- mutant mice. Nature neuroscience 201 10862700
2002 Distinct actions of Emx1, Emx2, and Pax6 in regulating the specification of areas in the developing neocortex. The Journal of neuroscience : the official journal of the Society for Neuroscience 187 12196586
1996 Emx1 and Emx2 show different patterns of expression during proliferation and differentiation of the developing cerebral cortex in the mouse. The European journal of neuroscience 176 8743751
2004 EMX2 regulates sizes and positioning of the primary sensory and motor areas in neocortex by direct specification of cortical progenitors. Neuron 173 15294144
2002 Wnt and Bmp signalling cooperatively regulate graded Emx2 expression in the dorsal telencephalon. Development (Cambridge, England) 156 12070081
2003 Emx2 patterns the neocortex by regulating FGF positional signaling. Nature neuroscience 146 12872126
2002 Emx2 and Pax6 control regionalization of the pre-neuronogenic cortical primordium. Cerebral cortex (New York, N.Y. : 1991) 136 11739261
2003 Emx1 and Emx2 cooperate to regulate cortical size, lamination, neuronal differentiation, development of cortical efferents, and thalamocortical pathfinding. The Journal of comparative neurology 126 12561075
2002 Conversion of cerebral cortex into basal ganglia in Emx2(-/-) Pax6(Sey/Sey) double-mutant mice. Nature neuroscience 123 12118260
2002 Emx2 regulates the proliferation of stem cells of the adult mammalian central nervous system. Development (Cambridge, England) 115 11923200
2000 The lack of Emx2 causes impairment of Reelin signaling and defects of neuronal migration in the developing cerebral cortex. The Journal of neuroscience : the official journal of the Society for Neuroscience 114 10648716
1998 EMX2 protein in the developing mouse brain and olfactory area. Mechanisms of development 110 9831645
2008 Frontal cortex subdivision patterning is coordinately regulated by Fgf8, Fgf17, and Emx2. The Journal of comparative neurology 107 18459137
1997 Familial schizencephaly associated with EMX2 mutation. Neurology 107 9153481
2003 Transcriptional repression of peri-implantation EMX2 expression in mammalian reproduction by HOXA10. Molecular and cellular biology 106 12482956
2001 Emx2 promotes symmetric cell divisions and a multipotential fate in precursors from the cerebral cortex. Molecular and cellular neurosciences 93 11922140
2017 Transcription factor Emx2 controls stereociliary bundle orientation of sensory hair cells. eLife 91 28266911
2010 Emx2 and Foxg1 inhibit gliogenesis and promote neuronogenesis. Stem cells (Dayton, Ohio) 89 20506244
2000 Emx2 is required for growth of the hippocampus but not for hippocampal field specification. The Journal of neuroscience : the official journal of the Society for Neuroscience 87 10729342
2003 Emx1, emx2 and pax6 in specification, regionalization and arealization of the cerebral cortex. Cerebral cortex (New York, N.Y. : 1991) 81 12764040
2007 Genetic interplay between the transcription factors Sp8 and Emx2 in the patterning of the forebrain. Neural development 80 17470284
2005 Emx2 and Pax6 function in cooperation with Otx2 and Otx1 to develop caudal forebrain primordium that includes future archipallium. The Journal of neuroscience : the official journal of the Society for Neuroscience 79 15917450
2004 Emx2 homeodomain transcription factor interacts with eukaryotic translation initiation factor 4E (eIF4E) in the axons of olfactory sensory neurons. Proceedings of the National Academy of Sciences of the United States of America 76 15247416
2010 Abnormal epithelial cell polarity and ectopic epidermal growth factor receptor (EGFR) expression induced in Emx2 KO embryonic gonads. Endocrinology 67 20962046
2002 Emx2: a gene responsible for cortical development, regionalization and area specification. Gene 66 12095673
2005 A mutually stimulating loop involving emx2 and canonical wnt signalling specifically promotes expansion of occipital cortex and hippocampus. Cerebral cortex (New York, N.Y. : 1991) 63 15800025
2002 Role of Emx2 in the development of the reciprocal connectivity between cortex and thalamus. The Journal of comparative neurology 63 12209834
2008 Progressive loss of PAX6, TBR2, NEUROD and TBR1 mRNA gradients correlates with translocation of EMX2 to the cortical plate during human cortical development. The European journal of neuroscience 61 18973570
1997 A number of schizencephaly patients including 2 brothers are heterozygous for germline mutations in the homeobox gene EMX2. European journal of human genetics : EJHG 60 9359037
2001 Emx2 directs the development of diencephalon in cooperation with Otx2. Development (Cambridge, England) 58 11493561
2010 Emx2 and early hair cell development in the mouse inner ear. Developmental biology 57 20152827
2004 Emx1 and Emx2 cooperate in initial phase of archipallium development. Mechanisms of development 56 15147765
2010 Scapula development is governed by genetic interactions of Pbx1 with its family members and with Emx2 via their cooperative control of Alx1. Development (Cambridge, England) 53 20627960
2006 Potential target genes of EMX2 include Odz/Ten-M and other gene families with implications for cortical patterning. Molecular and cellular neurosciences 52 16919471
2001 Agenesis of the scapula in Emx2 homozygous mutants. Developmental biology 51 11254354
2021 EMX2-GPR156-Gαi reverses hair cell orientation in mechanosensory epithelia. Nature communications 49 34001891
2005 Emx2 regulates mammalian reproduction by altering endometrial cell proliferation. Molecular endocrinology (Baltimore, Md.) 49 15994197
2003 Loss of Emx2 function leads to ectopic expression of Wnt1 in the developing telencephalon and cortical dysplasia. Development (Cambridge, England) 49 12668639
2010 EMX2 is epigenetically silenced and suppresses growth in human lung cancer. Oncogene 48 20697358
1997 Emx2 developmental expression in the primordia of the reproductive and excretory systems. Anatomy and embryology 48 9453363
2001 Emx2 in adult neural precursor cells. Mechanisms of development 40 11731244
2022 Function of bidirectional sensitivity in the otolith organs established by transcription factor Emx2. Nature communications 38 36280667
2010 Regulation of Emx2 expression by antisense transcripts in murine cortico-cerebral precursors. PloS one 38 20066053
2003 Antisense transcripts at the EMX2 locus in human and mouse. Genomics 36 12573261
2011 A forward genetic screen with a thalamocortical axon reporter mouse yields novel neurodevelopment mutants and a distinct emx2 mutant phenotype. Neural development 34 21214893
2001 Characterization of the homeodomain gene EMX2: sequence conservation, expression analysis, and a search for mutations in endometrial cancers. Genomics 31 11549315
2018 DMRT5, DMRT3, and EMX2 Cooperatively Repress Gsx2 at the Pallium-Subpallium Boundary to Maintain Cortical Identity in Dorsal Telencephalic Progenitors. The Journal of neuroscience : the official journal of the Society for Neuroscience 30 30143575
2008 No major role for the EMX2 gene in schizencephaly. American journal of medical genetics. Part A 30 18409201
2007 Variants in EMX2 and PTEN do not contribute to risk of endometriosis. Molecular human reproduction 30 17563403
2006 The transcription factors Emx1 and Emx2 suppress choroid plexus development and promote neuroepithelial cell fate. Developmental biology 28 16793035
2020 Epithelial Planar Bipolarity Emerges from Notch-Mediated Asymmetric Inhibition of Emx2. Current biology : CB 27 32109392
2003 The homeobox gene Emx2 underlies middle ear and inner ear defects in the deaf mouse mutant pardon. Journal of neurocytology 27 15044845
2018 Directional selectivity of afferent neurons in zebrafish neuromasts is regulated by Emx2 in presynaptic hair cells. eLife 26 29671737
2004 The role of Emx2 during scapula formation. Developmental biology 25 15501221
2012 Emx2 is a dose-dependent negative regulator of Sox2 telencephalic enhancers. Nucleic acids research 24 22495934
2011 Control of pelvic girdle development by genes of the Pbx family and Emx2. Developmental dynamics : an official publication of the American Association of Anatomists 23 21455939
2011 Vesicoureteral reflux and other urinary tract malformations in mice compound heterozygous for Pax2 and Emx2. PloS one 22 21731775
2010 The same enhancer regulates the earliest Emx2 expression in caudal forebrain primordium, subsequent expression in dorsal telencephalon and later expression in the cortical ventricular zone. Development (Cambridge, England) 22 20667915
2018 Wnt and BMP signaling pathways co-operatively induce the differentiation of multiple myeloma mesenchymal stem cells into osteoblasts by upregulating EMX2. Journal of cellular biochemistry 21 30450775
2011 Downregulation of EMX2 is associated with clinical outcomes in lung adenocarcinoma patients. Clinical lung cancer 21 21726823
2015 Nonsense mutation of EMX2 is potential causative for uterus didelphysis: first molecular explanation for isolated incomplete müllerian fusion. Fertility and sterility 20 25577462
2003 Cloning and cortical expression of rat Emx2 and adenovirus-mediated overexpression to assess its regulation of area-specific targeting of thalamocortical axons. Cerebral cortex (New York, N.Y. : 1991) 19 12764041
2013 EMX2 is downregulated in endometrial cancer and correlated with tumor progression. International journal of gynecological pathology : official journal of the International Society of Gynecological Pathologists 18 23370654
2012 Adenoviral delivery of the EMX2 gene suppresses growth in human gastric cancer. PloS one 18 23029345
2024 Emx2 underlies the development and evolution of marsupial gliding membranes. Nature 17 38658750
2015 EMX2 Is a Predictive Marker for Adjuvant Chemotherapy in Lung Squamous Cell Carcinomas. PloS one 17 26132438
2016 Emx2 as a novel tool to suppress glioblastoma. Oncotarget 16 27191499
2020 Emx2 regulates hair cell rearrangement but not positional identity within neuromasts. eLife 15 33377867
2018 Cohesive Regulation of Neural Progenitor Development by microRNA miR-26, Its Host Gene Ctdsp and Target Gene Emx2 in the Mouse Embryonic Cerebral Cortex. Frontiers in molecular neuroscience 15 29515367
2016 HOXA10, EMX2 and TENM1 expression in the mid-secretory endometrium of infertile women with a Müllerian duct anomaly. Reproductive biomedicine online 15 26896429
1998 Graded expression of Emx-2 in the adult newt limb and its corresponding regeneration blastema. Journal of molecular biology 15 9641974
2021 Regulation of sarcomagenesis by the empty spiracles homeobox genes EMX1 and EMX2. Cell death & disease 14 34016958
2011 Human teneurin-1 is a direct target of the homeobox transcription factor EMX2 at a novel alternate promoter. BMC developmental biology 14 21651764
2018 The expression of EMX2 lead to cell cycle arrest in glioblastoma cell line. BMC cancer 13 30514244
2021 Empty spiracles homeobox genes EMX1 and EMX2 regulate WNT pathway activation in sarcomagenesis. Journal of experimental & clinical cancer research : CR 12 34364391
2020 Live imaging of hair bundle polarity acquisition demonstrates a critical timeline for transcription factor Emx2. eLife 12 32965215
2023 The dark kinase STK32A regulates hair cell planar polarity opposite of EMX2 in the developing mouse inner ear. eLife 11 37144879
2019 EMX2 is epigenetically silenced and suppresses epithelial‑mesenchymal transition in human esophageal adenocarcinoma. Oncology reports 11 31432154
2015 Identification and expression of the target gene emx2 of miR-26a and miR-26b in Paralichthys olivaceus. Gene 11 26079439
2006 Emx2 in the developing hippocampal fissure region. The European journal of neuroscience 11 16819978
2002 Impaired postnatal development of hippocampal neurons and axon projections in the Emx2-/- mutants. Journal of neurochemistry 11 12437591
2016 Empty Spiracles Homeobox 2 (EMX2) Inhibits the Invasion and Tumorigenesis in Colorectal Cancer Cells. Oncology research 10 27712600
2016 Critical role of Emx2 in the pluripotency - differentiation transition in male gonocytes via regulation of FGF9/NODAL pathway. Reproduction (Cambridge, England) 9 27002001
2013 Promotion of cortico-cerebral precursors expansion by artificial pri-miRNAs targeted against the Emx2 locus. Current gene therapy 9 23317055
1999 Mutation analysis of the EMX2 gene in Kallmann's syndrome. Fertility and sterility 8 10560999
2021 Binding of microRNA-135a (miR-135a) to homeobox protein A10 (HOXA10) mRNA in a high-progesterone environment modulates the embryonic implantation factors beta3-integrin (ITGβ3) and empty spiracles homeobox-2 (EMX2). Annals of translational medicine 7 33987360
2022 An Association between EMX2 Variations and Mayer-Rokitansky-Küster-Hauser Syndrome: A Case-Control Study of Chinese Women. Journal of healthcare engineering 5 35463657
1999 Mouse forebrain development. The role of Emx2 homeobox gene. Comptes rendus de l'Academie des sciences. Serie III, Sciences de la vie 5 10609088
2024 EMX2 inhibits clear cell renal cell carcinoma progress via modulating Akt/FOXO3a pathway. Molecular carcinogenesis 4 38362840
2024 Emx2 lineage tracing reveals antecedent patterns of planar polarity in the mouse inner ear. Development (Cambridge, England) 4 38682291
2024 CRISPR/dCas9-Mediated DNA Methylation Editing on emx2 in Chinese Tongue Sole (Cynoglossus semilaevis) Testis Cells. International journal of molecular sciences 3 39062879
2019 Identification of Novel Binding Partners for Transcription Factor Emx2. The protein journal 2 30628007
2025 Novel Insights into Emx2 and Dmrta2 Cooperation during Cortex Development and Evidence for Dmrta2 Function in the Choroid Plexus. The Journal of neuroscience : the official journal of the Society for Neuroscience 1 40456611
2024 Emx2 is an essential regulator of ciliated cell development across embryonic tissues. iScience 1 39687012
2025 De novo rare EMX2 variants lead to idiopathic hypogonadotropic hypogonadism. Genetics in medicine : official journal of the American College of Medical Genetics 0 41765865
2022 The tissue-specificity associated region and motif of an emx2 downstream enhancer CNE2.04 in zebrafish. Gene expression patterns : GEP 0 35970322

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