Affinage

PITX2

Pituitary homeobox 2 · UniProt Q99697

Length
317 aa
Mass
35.4 kDa
Annotated
2026-06-10
100 papers in source corpus 46 papers cited in narrative 43 extracted findings
Cross-family judge vs UniProt: Affinage preferred faithfulness: 8/8 claims corpus-supported (100%)

Mechanistic narrative

Synthesis pass · prose summary of the discoveries below

PITX2 is a bicoid-type homeodomain transcription factor that acts as the principal downstream effector of left-sided Nodal/Lefty signaling to direct left-right asymmetry during vertebrate organ morphogenesis (PMID:9707115, PMID:9708732, PMID:10021341, PMID:10662647). Asymmetric expression is conferred by an intronic asymmetric enhancer (ASE) carrying Foxh1 and Nkx2 sites that is necessary and sufficient for left-sided expression, and its loss produces visceral laterality defects (PMID:16835440). PITX2 is required for morphogenesis of multiple organs—anterior pituitary, teeth, gut, gonad, and craniofacial and limb musculature—often through dose-dependent, cell-autonomous control of progenitor expansion, survival, and proliferation (PMID:10499586, PMID:11807026, PMID:21035439, PMID:17107996), and human homeodomain mutations that graded-reduce DNA binding and transactivation cause Axenfeld-Rieger and related ocular/dental syndromes with severity tracking residual activity (PMID:10958652). PITX2 is a transcriptional integration node: Wnt/Dvl/β-catenin signaling induces its transcription and converts it from repressor to activator via regulated HDAC1/β-catenin exchange to drive Cyclin D2-dependent proliferation (PMID:12464179), while β-catenin and LEF-1 bind distinct sites (homeodomain and C-terminal tail) to form synergistic complexes on targets such as the Lef-1 promoter (PMID:15728254, PMID:17785445). It assembles context-specific complexes with Nkx2.5, MEF2A, Smad3, and Sox2 to activate or repress tissue-specific targets including ANF, MyoD, Myf5, and FSHβ (PMID:12692125, PMID:15466416, PMID:21035439, PMID:18022758), and its activity is tuned post-translationally by PKC and Akt2 phosphorylation, the latter controlling assembly of a Pitx2/HuR ribonucleoprotein complex that stabilizes Cyclin D1 mRNA during the proliferation-to-differentiation switch (PMID:15751970, PMID:20019746). In the heart PITX2 enforces left-atrial identity by directly repressing the sinoatrial-node program—binding the Shox2 promoter and activating miR-17-92/miR-106b-25 clusters that repress Shox2 and Tbx3—and antagonizes TBX5 in an incoherent feed-forward loop governing ion-channel and junctional effector genes; haploinsufficiency predisposes to atrial fibrillation (PMID:20457925, PMID:24927531, PMID:24395921, PMID:27582060, PMID:22116619). It further governs atrial electrophysiology and metabolism through TASK-2-dependent membrane potential, RyR2-mediated Ca2+ handling, and Cox7c-dependent mitochondrial function and ROS control (PMID:27765191, PMID:37080450, PMID:30143541, PMID:27251288, PMID:39129206). Locus-level PITX2 expression is set by remote CTCF-dependent TAD architecture and by Nrf3-directed DNA methylation (PMID:38643172, PMID:40099370).

Mechanistic history

Synthesis pass · year-by-year structured walk · 38 steps
  1. 1998 High

    Established PITX2 as the transcriptional mediator that converts left-sided Nodal signaling into asymmetric organ situs, answering how positional signaling is read out into morphogenesis.

    Evidence Ectopic expression and genetic epistasis in chick, Xenopus, and mouse laterality mutants

    PMID:10021341 PMID:9707115 PMID:9708732

    Open questions at the time
    • Did not define direct target genes downstream of PITX2
    • Did not resolve isoform-specific contributions
  2. 1999 High

    Loss-of-function demonstrated that PITX2 is broadly required for multiple organ morphogenesis beyond laterality, defining it as a pleiotropic developmental transcription factor.

    Evidence Pitx2 knockout mouse phenotypic analysis

    PMID:10499586

    Open questions at the time
    • Did not separate organ-specific from systemic requirements
    • Did not identify molecular targets in each tissue
  3. 2000 High

    Resolved that PITX2 isoforms have non-overlapping roles, with pitx2c specifically mediating asymmetric organ development, refining which transcript carries the laterality function.

    Evidence Isoform-specific in situ, gain-of-function, and epistasis in zebrafish and Xenopus

    PMID:10662647

    Open questions at the time
    • Isoform-specific protein partners not defined
    • Mechanism of distinct isoform activity unresolved
  4. 2001 High

    Confirmed isoform specialization in cardiac looping, mapping the laterality-relevant transcriptional activity to Pitx2c and its shared C-terminal domain.

    Evidence Isoform-specific antisense and dominant-negative constructs in chick

    PMID:11222154

    Open questions at the time
    • Direct cardiac target genes not identified
    • Cofactor requirements not addressed
  5. 2001 Medium

    Placed PITX2 within the Nodal pathway for early germ-layer specification, indicating it can act in mesoderm/endoderm formation in addition to laterality.

    Evidence Gain/loss-of-function and dominant-negative chimera in Xenopus and zebrafish

    PMID:11203696

    Open questions at the time
    • Single lab; mammalian relevance not established
    • Direct targets in germ-layer specification undefined
  6. 2002 High

    Defined the molecular switch by which Wnt/β-catenin induces PITX2 and converts it from repressor to activator via HDAC1/β-catenin exchange, linking PITX2 to growth-factor-dependent proliferation.

    Evidence Co-IP, ChIP, reporter assays, exchange experiments in pituitary and outflow tract

    PMID:12464179

    Open questions at the time
    • Generality of the switch across tissues not fully tested
    • Coactivator identities incompletely defined
  7. 2002 High

    Showed dose-dependent PITX2 requirement at successive stages of pituitary development, establishing threshold-level control of lineage specification.

    Evidence Allelic series in mice with expression and immunostaining readouts

    PMID:11807026

    Open questions at the time
    • Direct vs indirect regulation of Pit1/Gata2/Sf1 not separated
  8. 2003 Medium

    Identified a post-transcriptional layer in which Wnt signaling and PITX2 stabilize Pitx2 mRNA by shifting ARE-BP binding (KSRP/TTP to HuR), explaining how PITX2 levels are amplified.

    Evidence mRNA half-life, RIP/pulldown, ARE-BP interaction studies

    PMID:14636578

    Open questions at the time
    • Single lab
    • In vivo physiological relevance of stabilization not established
  9. 2003 Medium

    Demonstrated isoform-specific, cofactor-dependent regulation of cardiac targets, with Nkx2.5 differentially modulating PITX2A vs PITX2C activity on ANF.

    Evidence Reporter assays, EMSA, co-transfection

    PMID:12692125

    Open questions at the time
    • Single lab; in vivo ANF regulation not tested
  10. 2004 High

    Identified MEF2A as a direct PITX2 partner and showed MAPK (p38) signaling potentiates PITX2 transcriptional output, adding a signal-responsive cofactor axis.

    Evidence Yeast two-hybrid, GST pull-down, reporter assays

    PMID:15466416

    Open questions at the time
    • Cell-type specificity of synergy not mechanistically explained
    • Direct phosphorylation site on PITX2 not mapped
  11. 2005 High

    Mapped reciprocal β-catenin (homeodomain) and LEF-1 (C-terminus) binding sites enabling simultaneous, independent complex assembly that synergistically regulates Wnt targets.

    Evidence Co-IP, deletion mapping, reporter assays, Pitx2-/- RT-PCR

    PMID:15728254

    Open questions at the time
    • Stoichiometry of the ternary complex unresolved
  12. 2005 Medium

    Established PKC phosphorylation as a bidirectional regulator of PITX2, with N- and C-terminal sites oppositely tuning activity through protein-interaction control.

    Evidence In vivo phosphorylation IP, mutagenesis, reporter assays, mutant mouse profiling

    PMID:15751970

    Open questions at the time
    • Single lab
    • Specific PKC isoform and in vivo targets not defined
  13. 2006 High

    Defined the asymmetric enhancer (ASE) as the cis-regulatory module conferring left-sided PITX2 expression via Foxh1/Nkx2 inputs, linking Nodal signaling directly to the locus.

    Evidence Targeted ASE deletion and transgenic enhancer assays in mice

    PMID:16835440

    Open questions at the time
    • Did not address higher-order chromatin context of the enhancer
  14. 2006 High

    Positioned PITX2 within an FGF9→PITX2→FGF10 mesenchymal cascade for cecal budding, demonstrating its role in epithelial-mesenchymal signaling relays.

    Evidence Compartment-specific conditional knockouts and epistasis in mice

    PMID:22819677

    Open questions at the time
    • Direct Fgf10 regulation by PITX2 not demonstrated at the promoter level
  15. 2007 Medium

    Showed PITX2 transcription in Rathke's pouch requires combined TCF/LEF and NF-1 enhancer elements, establishing it as a direct Wnt cis-regulatory target in the pituitary.

    Evidence Transgenic LacZ reporters with binding-site mutations

    PMID:17562863

    Open questions at the time
    • Single regulatory module; broader enhancer landscape not mapped
  16. 2007 Medium

    Identified additional context-specific partners (Smad3) and feedback regulators, expanding PITX2's combinatorial interactome to TGFβ/activin signaling on FSHβ.

    Evidence Co-IP with domain mapping, siRNA knockdown, reporter and activin assays

    PMID:18022758

    Open questions at the time
    • Single lab
    • In vivo gonadotrope relevance not tested
  17. 2007 Medium

    Demonstrated PITX2 represses Osterix to block BMP-induced osteoblastic transdifferentiation of myoblasts, defining a lineage-restricting function.

    Evidence shRNA, overexpression, microarray, null MEFs with BMP stimulation

    PMID:17951577

    Open questions at the time
    • Single lab
    • Directness of Osterix repression not established by ChIP
  18. 2007 High

    Defined PITX2 function in branchiomeric muscle as cell-autonomous control of mesoderm expansion and survival prior to myogenic specification.

    Evidence Null/hypomorphic mice, lineage tracing, conditional inactivation, chick cultures

    PMID:17107996

    Open questions at the time
    • Direct survival-pathway targets not identified
  19. 2007 High

    Extended the cofactor logic by showing β-catenin and LEF-1 bind distinct PITX2 sites and that PITX2 directly regulates Lef-1, with isoform-selective effects on β-catenin-dependent Lef-1.

    Evidence ChIP, Co-IP, reporter assays, transgenic LacZ, RT-PCR

    PMID:17785445

    Open questions at the time
    • Functional consequence of Lef-1 isoform switching in vivo not resolved
  20. 2008 Medium

    Implicated PITX2 in cell adhesion, spindle orientation, and CyclinD1-dependent organ-size control during asymmetric gonad development, broadening its cellular effects.

    Evidence Gain/loss-of-function in chick with adhesion and spindle-orientation assays

    PMID:18678914

    Open questions at the time
    • Limited mechanistic depth
    • Molecular mediators of adhesion not identified
  21. 2009 High

    Defined Akt2 phosphorylation as the switch controlling PITX2 association with a HuR/Ccnd1 mRNA-stabilizing complex, coupling PITX2 to the proliferation-to-differentiation transition.

    Evidence Kinase assay, RIP, mRNA stability, C2C12 differentiation

    PMID:20019746

    Open questions at the time
    • In vivo myogenic relevance of the phospho-switch not tested
  22. 2010 High

    Showed PITX2 directly binds and activates MyoD and Myf5 and functions both as an anti-apoptotic factor and an activator of the myogenic program in muscle precursors.

    Evidence ChIP/promoter binding, conditional KO, apoptosis assays, genetic epistasis

    PMID:20978076 PMID:21035439

    Open questions at the time
    • Mechanism of anti-apoptotic activity not molecularly defined
  23. 2010 High

    Established that PITX2 haploinsufficiency causes atrial arrhythmia by directly repressing Shox2 to prevent ectopic left-sided pacemaker specification, linking the gene to atrial fibrillation.

    Evidence In vivo ChIP, reporter assays, haploinsufficient mice with programmed stimulation

    PMID:20457925

    Open questions at the time
    • Full set of SAN-program targets not enumerated at this stage
  24. 2011 High

    Showed myocardial PITX2 dose-dependently represses left sinus venosus autorhythmicity and prevents bilateral SAN formation, defining its role in pacemaker asymmetry.

    Evidence Myocardial-specific conditional KO, optical mapping, in situ, allelic series

    PMID:22116619

    Open questions at the time
    • Molecular effectors of autorhythmicity suppression not all defined
  25. 2011 Medium

    Linked PITX2 to morphogenetic cell-shape control via left-specific N-cadherin and Shroom3 in the dorsal mesentery, explaining directional gut rotation.

    Evidence Compound mutant genetic interaction, conditional KO, morphometric analysis

    PMID:21726547

    Open questions at the time
    • Single lab
    • Direct PITX2 regulation of N-cadherin not shown
  26. 2013 High

    Revealed PITX2 controls BMP signaling through microRNA circuits (miR-200c/141 repressing noggin; miR-203 targeting Bmper) during tooth differentiation.

    Evidence ChIP, miRNA KO mice, differentiation assays

    PMID:23863486

    Open questions at the time
    • Tissue specificity of the miRNA-BMP circuit beyond ameloblasts not defined
  27. 2013 Medium

    Identified Dact2 as a PITX2-interacting repressor forming a negative feedback loop that limits PITX2 transcriptional and Wnt activity.

    Evidence Co-IP, reporter assays, loss/gain-of-function, IHC

    PMID:23349981

    Open questions at the time
    • Single lab
    • Structural basis of Dact2-PITX2 interaction unknown
  28. 2014 High

    Defined the miR-17-92/miR-106b-25 clusters as PITX2-activated effectors that repress Shox2 and Tbx3 to suppress the SAN program and protect against AF.

    Evidence Integrated genomics, cardiac miR KO mice, electrical stimulation, ECG telemetry

    PMID:24927531

    Open questions at the time
    • Relative contribution of direct repression vs miRNA route not quantified
  29. 2014 High

    Mapped direct atrial PITX2 target genes (ion channels, junctional proteins) and established an incoherent feed-forward loop with TBX5 governing membrane effectors, with structural intercalated-disc remodeling on loss.

    Evidence Postnatal conditional KO, ChIP-seq, IF/TEM, epistatic rescue in Tbx5 mutants

    PMID:24395921 PMID:27582060

    Open questions at the time
    • Quantitative effector contributions to arrhythmia not separated
  30. 2016 High

    Connected PITX2 to oxidative-stress defense and cardiac repair, showing it activates ETC and ROS-scavenger genes cooperatively with Yap and is regulated by Nrf2, with antioxidant rescue of its loss-of-function phenotype.

    Evidence Hippo-deficient mice, injury models, ChIP, gain-of-function, antioxidant rescue

    PMID:27251288

    Open questions at the time
    • Direct vs Yap-dependent target attribution incompletely resolved
  31. 2016 High

    Linked PITX2c haploinsufficiency to atrial electrical remodeling through reduced TASK-2 expression and depolarized resting potential, defining an ion-channel mechanism for arrhythmia and drug response.

    Evidence Pitx2c+/- mice, patch clamp, optical mapping, HEK channel expression, modeling

    PMID:27765191

    Open questions at the time
    • Directness of TASK-2 regulation by PITX2 not established by ChIP
  32. 2015 High

    Showed PITX2 auto-regulation and CTCF-dependent asymmetric chromatin interactions coordinate mutual antagonism with the lncRNA Playrr, linking PITX2 to chromatin topology in laterality.

    Evidence CRISPR editing of Playrr, 3D FISH, 3C, conditional KO

    PMID:26411685

    Open questions at the time
    • Mechanism by which PITX2 directs topology not molecularly defined
  33. 2018 High

    Established that PITX2 maintains cardiomyocyte mitochondrial function via Cox7c, with its loss causing oxidative stress and adipose-like remodeling after injury.

    Evidence Conditional KO, lineage tracing, snRNA-seq, Cox7c knockdown, MI model

    PMID:30143541

    Open questions at the time
    • Full mitochondrial target network not delineated
  34. 2020 Medium

    Identified BMP10 as a strongly PITX2-repressed atrial gene with biomarker potential, linking reduced atrial PITX2 to elevated circulating BMP10.

    Evidence RNA-seq, qPCR, Western blot in iPSC-CMs and human left atrial appendage

    PMID:32814717

    Open questions at the time
    • Direct promoter binding not demonstrated
    • Causal role of BMP10 in AF not established
  35. 2023 High

    Defined RyR2 hyperactivity as a downstream consequence of PITX2 deficiency driving SR Ca2+ leak and AF, with pharmacological RyR2 inhibition as rescue.

    Evidence Pitx2+/- mice, Ca2+ imaging, burst pacing, ent-verticilide inhibition

    PMID:37080450

    Open questions at the time
    • Whether RyR2 is a direct PITX2 target vs indirect remodeling effect unresolved
  36. 2024 High

    Established remote CTCF-dependent TAD boundaries as required for tissue-specific PITX2 expression, with boundary loss causing opposite dysregulation in SAN and ventricle.

    Evidence Patient genomics, mouse knock-in, 3C/Hi-C in hiPSC-CMs, electrophysiology

    PMID:38643172

    Open questions at the time
    • Specific enhancers rewired by TAD fusion not fully mapped
  37. 2024 High

    Identified Nrf3 as an epigenetic suppressor of PITX2 that recruits hnRNP K and DNMT1 to methylate the locus, with PITX2 overexpression protecting against MI-induced mitochondrial ROS and apoptosis.

    Evidence ChIP-seq, IP-MS, CM-specific AAV, Nrf3 KO mice, MitoParaquat

    PMID:40099370

    Open questions at the time
    • Dynamics of methylation reversal not addressed
  38. 2024 High

    Confirmed in human atrial cardiomyocytes that PITX2 deficiency causes mitochondrial dysfunction and a glycolytic metabolic shift via COX7C/FOXO1 dysregulation, validated in AF patient tissue.

    Evidence CRISPR PITX2 KO hiPSC-CMs, EM, snRNA-seq, respiration assays, patient samples

    PMID:39129206

    Open questions at the time
    • Directness of FOXO1 regulation by PITX2 not established

Open questions

Synthesis pass · forward-looking unresolved questions
  • How the dozens of context-specific PITX2 cofactor complexes, isoform choices, and post-translational modifications are integrated into a single locus-specific transcriptional output across tissues remains unresolved.
  • No unified model linking cofactor selection to target choice
  • Quantitative dose-response logic across tissues incompletely defined
  • Directness of several key cardiac effectors (TASK-2, RyR2, BMP10, FOXO1) not all ChIP-validated

Mechanism profile

Synthesis pass · controlled-vocabulary classification · explore literature graph →
Molecular activity
GO:0140110 transcription regulator activity 6 GO:0003677 DNA binding 4 GO:0098772 molecular function regulator activity 4 GO:0003723 RNA binding 2
Localization
GO:0005634 nucleus 1
Pathway
R-HSA-1266738 Developmental Biology 7 R-HSA-162582 Signal Transduction 5 R-HSA-74160 Gene expression (Transcription) 4 R-HSA-1643685 Disease 3 R-HSA-397014 Muscle contraction 3 R-HSA-4839726 Chromatin organization 2
Partners
CTNNB1DACT2ELAVL1LEF1MEF2ANKX2-5SMAD3SOX2

Evidence

Reading pass · 43 per-paper findings extracted from the source corpus
Year Finding Method Journal Conf PMIDs
1998 Pitx2 is expressed in the left lateral plate mesoderm downstream of Nodal/Lefty signaling; misexpression of Pitx2 in the right lateral plate alters organ situs and body rotation in chick and Xenopus, establishing Pitx2 as a transcriptional mediator of left-right asymmetry downstream of Shh and Nodal signaling. Ectopic protein expression (retroviral/mRNA injection), in situ hybridization, genetic epistasis in mouse laterality mutants Nature High 10021341 9707115 9708732
1999 Pitx2 gene deletion in mice causes defective body-wall closure, right pulmonary isomerism, altered cardiac position, arrest in turning, and blocks determination and proliferation of anterior pituitary gland and tooth organogenesis, establishing Pitx2 as a transcription factor required for multiple organ morphogenesis. Pitx2 knockout mouse phenotypic analysis (loss-of-function) Nature High 10499586
2002 Pitx2 is rapidly induced by the Wnt/Dvl/beta-catenin pathway; regulated exchange of HDAC1/beta-catenin converts Pitx2 from a transcriptional repressor to an activator, analogous to TCF/LEF1 regulation. Pitx2 then acts as a competence factor for growth factor-dependent coactivator complex recruitment to activate Cyclin D2 gene expression during cell-type-specific proliferation. Co-IP, ChIP, reporter assays, beta-catenin/HDAC1 exchange experiments, cell-type-specific proliferation assays in cardiac outflow tract and pituitary Cell High 12464179
2003 Activation of the Wnt/beta-catenin pathway stabilizes Pitx2 mRNA (which normally has rapid turnover via AU-rich element-binding proteins KSRP and TTP) by reducing Pitx2 3'UTR interaction with destabilizing ARE-BPs and increasing interaction with stabilizing ARE-BP HuR. Pitx2 itself mediates this mRNA stabilization. mRNA half-life assays, RNA-protein interaction (RIP/pulldown), ARE-BP interaction studies Molecular cell Medium 14636578
2000 Two Pitx2 isoforms (pitx2a and pitx2c) in zebrafish have distinct expression patterns and non-overlapping functions: pitx2c controls asymmetric organ development and is regulated by one-eyed pinhead (EGF-CFC) and nodal signaling, while pitx2a has overlapping but distinct roles; ectopic pitx2c induces cyclops, lefty2 and goosecoid, indicating it can also act upstream of nodal signaling. Isoform-specific in situ hybridization, mRNA injection gain-of-function in zebrafish and Xenopus, genetic epistasis with cyclops/schmalspur mutants Development (Cambridge, England) High 10662647
2001 Pitx2c, but not Pitx2a, is expressed in the left lateral plate mesoderm and is specifically required for heart looping; antisense knockdown of Pitx2c randomizes heart looping while Pitx2a antisense does not. Dominant-negative Pitx2c-Engrailed (but not Pitx2a-EnR) in the left LPM randomizes heart looping, and transcriptional activation maps to the shared C-terminal domain. Isoform-specific antisense oligonucleotides, dominant-negative retroviral constructs, in situ hybridization in chick Development (Cambridge, England) High 11222154
2002 Pitx2 is required at multiple stages of pituitary development: it initiates expansion of Rathke's pouch, maintains Hesx1 and Prop1 expression, and is required at threshold levels for specification of gonadotropes and the Pit1 lineage through dependence of Pit1, Gata2, Egr1, and Sf1 on PITX2. Allelic series analysis in mice (multiple Pitx2 hypomorphic and null alleles), in situ hybridization, immunostaining Development (Cambridge, England) High 11807026
2000 PITX2 missense mutations in the homeodomain (Arg46Trp for IH, Arg31His for IGDS, Leu16Gln/Thr30Pro/Arg53Pro for ARS) produce stable nuclear proteins with graded reduction in DNA-binding and transactivation activity; the Arg53Pro ARS mutant shows cytoplasmic mislocalization, suggesting helix 3 of the homeodomain contains a nuclear localization signal. Phenotypic severity correlates with residual PITX2 activity. Site-directed mutagenesis, EMSA (DNA-binding shift), transfection transactivation assays, nuclear localization studies in COS-7 cells Human molecular genetics High 10958652
2005 PITX2, beta-catenin, and LEF-1 physically interact to synergistically regulate the LEF-1 promoter. LEF-1 interacts with the PITX2 C-terminal tail, while beta-catenin interacts directly with the PITX2 homeodomain; LEF-1 and beta-catenin interact simultaneously and independently with PITX2 through two different sites. Co-IP/pulldown, reporter assays, deletion mapping, Pitx2-/- mouse RT-PCR Journal of cell science High 15728254
2007 Beta-catenin interacts with the PITX2 homeodomain and Lef-1 interacts with the PITX2 C-terminal tail; both interact simultaneously and independently with PITX2 through distinct sites to regulate PITX2 transcriptional activity. PITX2 enhances full-length beta-catenin-dependent Lef-1 isoform while decreasing expression of the N-terminally truncated beta-catenin-independent isoform. ChIP confirmed Lef-1 promoter as a direct PITX2 target. ChIP, Co-IP, reporter assays, transgenic mouse (LacZ reporter), RT-PCR Molecular and cellular biology High 17785445
2003 PITX2C and Nkx2.5 synergistically activate the atrial natriuretic factor (ANF) promoter through binding to their respective DNA elements; PITX2A activation of ANF is repressed by Nkx2.5. PITX2 isoforms differentially regulate ANF expression in an isoform-specific manner. Reporter assays, EMSA, co-transfection, cell-line-specific transcription studies The Journal of biological chemistry Medium 12692125
2004 PITX2a directly interacts with MEF2A (demonstrated by yeast two-hybrid and GST pull-down). This interaction results in synergistic activation of the ANF promoter in a cell-type-specific manner (LS8 oral epithelial cells but not NIH/3T3, CHO, or C2C12), dependent on MEF2 binding sites. p38 MAP kinase pathway activation (via MKK3/MKK6) enhances PITX2 activity up to 90-fold on the ANF promoter. Yeast two-hybrid, GST pull-down, reporter assays, co-transfection The Journal of biological chemistry High 15466416
2005 PKC phosphorylates PITX2 in vivo; N-terminal phosphorylation negatively regulates PITX2 transcriptional activity while C-terminal phosphorylation positively regulates it by enhancing protein-protein interactions. An ARS-associated C-terminal frameshift mutation (DeltaT1261) deletes PKC sites, reduces phosphorylation, and abolishes synergistic transcriptional activation through loss of protein interactions. In vivo phosphorylation (immunoprecipitation of phosphorylated protein), site-directed mutagenesis of PKC sites, reporter assays, gene expression profiling of Pitx2 mutant mouse tissue Biochemistry Medium 15751970
2009 Pitx2 is phosphorylated by the protein kinase Akt2; unphosphorylated Pitx2 associates with a ribonucleoprotein complex including HuR that stabilizes Ccnd1 (Cyclin D1) mRNA. Upon Akt2-mediated phosphorylation during myoblast differentiation initiation, Pitx2 dissociates from the Pitx2/HuR/Ccnd1 mRNA complex, leading to Ccnd1 mRNA destabilization and the switch from proliferation to differentiation. Akt2 phosphorylation assay, RIP (RNA immunoprecipitation), mRNA half-life measurement, C2C12 differentiation assays Cell death and differentiation High 20019746
2010 Pitx2 haploinsufficiency in adult mice predisposes to atrial arrhythmias including AFL and atrial tachycardia. In vivo ChIP and transfection experiments demonstrated that Pitx2 directly binds the Shox2 promoter, suppressing sinoatrial node (SAN)-specific gene expression including Shox2 in the left atrium, thereby preventing left-sided pacemaker specification. In vivo ChIP, transfection reporter assays, Pitx2 haploinsufficient mouse model with programmed stimulation, microarray, in situ hybridization Proceedings of the National Academy of Sciences of the United States of America High 20457925
2014 Pitx2 positively regulates miR-17-92 and miR-106b-25 microRNA clusters; these miRs directly repress genes required for sinoatrial node development (Shox2, Tbx3), thereby suppressing the SAN genetic program on the left side. Loss of miR-17-92 or miR-106b-25 increases AF susceptibility. Integrated genomics, cardiac-specific miR knockout mice, intracardiac electrical stimulation, ECG telemetry Proceedings of the National Academy of Sciences of the United States of America High 24927531
2014 Postnatal conditional inactivation of Pitx2 in the atrium reveals direct Pitx2 target genes encoding ion channels (including calcium handling genes), cell junction proteins, and critical transcriptional regulators; Pitx2 loss leads to structural remodeling of the intercalated disc. TBX5 directly activates PITX2, and TBX5 and PITX2 antagonistically regulate membrane effector genes (Scn5a, Gja1, Ryr2, Dsp, Atp2a2) in an incoherent feed-forward loop. Conditional Pitx2 KO (postnatal), integrated genomics (ChIP-seq), immunofluorescence, transmission electron microscopy; epistasis rescue by Pitx2 haploinsufficiency in Tbx5 mutants Circulation. Cardiovascular genetics; Science translational medicine High 24395921 27582060
2016 Pitx2 expression is induced in injured Hippo-deficient ventricles. Pitx2 activates genes encoding electron transport chain components and reactive oxygen species scavengers. A subset of Pitx2 target genes is cooperatively regulated with the Hippo effector Yap. Nrf2 directly regulates Pitx2 expression and subcellular localization. Pitx2 mutant myocardium has elevated ROS, and antioxidant supplementation suppresses the Pitx2 loss-of-function phenotype. Hippo-deficient mouse model, neonatal apex resection, adult MI model, genomic analyses (ChIP), gain-of-function cardiomyocytes, antioxidant rescue experiments Nature High 27251288
2006 FGF9 signals to the mesenchyme via Pitx2 to induce mesenchymal Fgf10 expression, which in turn leads to epithelial cecal bud formation. Complete deletion of either Fgf9 or Pitx2 leads to cecal agenesis, placing Pitx2 downstream of FGF9 and upstream of FGF10 in a mesenchymal signaling cascade. Tissue-compartment-specific conditional knockout (epithelium vs. mesenchyme), genetic epistasis in mice Developmental biology High 22819677
2010 Pitx2 directly binds the MyoD core enhancer to activate MyoD gene expression in limb muscle precursors. Pitx2 and Myf5 define parallel genetic pathways for limb myogenesis; in the myotome, Pitx2 acts downstream of Pax3 to rescue MyoD expression when Myf5/Mrf4 are absent. ChIP (Pitx2 binding to MyoD enhancer), genetic epistasis (Pitx2/Myf5/Mrf4 double/triple mutant mice), limb-specific Pitx2 conditional KO Development (Cambridge, England) High 20978076
2010 Pitx2 is cell-autonomously required to prevent apoptosis in extraocular muscle primordia; PITX2 binds and activates transcription of Myf5 and MyoD promoters, demonstrating these are direct targets. Pitx2 acts first as an anti-apoptotic factor in pre-myogenic mesoderm, then activates the myogenic program. Conditional KO (cell-autonomous requirement), promoter-binding assays, apoptosis assays, Pax7 KO comparison Developmental biology High 21035439
2011 N-cadherin expression is specific to the left side of the dorsal mesentery and is Pitx2-dependent; Shroom3 and N-cadherin function cooperatively downstream of Pitx2 to regulate cell shape changes (taller, narrower left DM epithelial cells) necessary for gut tube morphogenesis and gut rotation direction. Shroom3/N-cadherin heterozygous compound mutant genetic interaction, Pitx2 conditional KO, morphometric analysis of cell shape Developmental biology Medium 21726547
2011 Myocardial Pitx2 prevents expansion of the left SAN primordium, promotes left sinus horn expansion, and dose-dependently represses autorhythmic properties of the left sinus venosus myocardium. Myocardial-specific Pitx2 KO results in bilateral SANs (right atrial isomerism) and symmetric atrial entrance of systemic veins. Myocardial-specific conditional Pitx2 KO (cTP mice), optical mapping, in situ hybridization, allelic series Cardiovascular research High 22116619
2013 Pitx2 directly binds the miR-200c/141 promoter (shown by ChIP) and activates miR-200c expression; miR-200c represses noggin (a BMP antagonist), thereby promoting Bmp signaling in a positive feedback loop. miR-203 expression is also activated by Pitx2 and targets Bmper to further regulate Bmp signaling during ameloblast differentiation. ChIP (endogenous Pitx2 binding to miR-200c/141 promoter), miR-200c/141 KO mice, in vitro and in vivo differentiation assays Development (Cambridge, England) High 23863486
2007 Pitx2 is required for branchiomeric muscle development through an autonomous function in expansion and survival of branchial arch mesoderm; Pitx2cre lineage tracing showed mutant cells enter the first branchial arch but lack markers of undifferentiated core mesoderm and specified branchiomeric muscle. Conditional inactivation in chick mandible cultures confirmed cell-autonomous requirement. Pitx2 null and hypomorphic mice, Pitx2cre lineage tracing, Myf5cre lineage tracing, conditional inactivation, chick mandible cultures Development (Cambridge, England) High 17107996
2007 NF-1 and TCF/LEF recognition elements in a 520-bp pituitary-specific enhancer are both necessary for Pitx2 transcription in Rathke's pouch in vivo, identifying Pitx2 as a direct transcriptional target of Wnt signaling via TCF/NF-1 co-regulation. In vivo transgenic LacZ reporter analysis, deletion analysis, site-specific mutation of NF-1 and TCF/LEF binding sites Molecular and cellular biology Medium 17562863
2007 Pitx2 prevents osteoblastic transdifferentiation of myoblasts (C2C12 cells) by BMP stimulation by repressing Osterix expression; Pitx2 is induced by BMPs 2 days post-stimulation coincident with Osterix downregulation. Pitx2 knockdown enhances Osterix expression and osteoblastic maturation, and Pitx2-null MEFs show enhanced Osterix expression upon BMP stimulation. shRNA knockdown, overexpression, gene microarray, Pitx2-null mouse embryonic fibroblasts, BMP stimulation assays The Journal of biological chemistry Medium 17951577
2007 Pitx2 and Sox2 interact physically and regulate Lef-1, Pitx2 and Sox2 expression during incisor development; Sox2 inhibits Pitx2 transcriptional activity and DNA binding, and this interaction controls gene expression in specific Sox2 and Pitx2 co-expression progenitor cell domains. Co-IP, conditional Sox2 KO, Lef-1 overexpression rescue, reporter assays Development (Cambridge, England) Medium 27660324
2007 Smad3 and Pitx2 form a protein complex (co-immunoprecipitated) mediated through the Pitx2 homeodomain, and this interaction is required for full transcriptional activation of the FSHbeta promoter. siRNA knockdown of Pitx2 abrogates both Smad3- and activin-mediated stimulation of the FSHbeta promoter. Co-IP (Pitx2/Smad3 complex), siRNA knockdown, reporter assays, activin stimulation Molecular and cellular endocrinology Medium 18022758
2008 Pitx2 regulates cell adhesion, affinity, and cell recognition events in the developing gonad primordium epithelia; controls mitotic spindle orientation of the developing gonad cortex; and modulates CyclinD1 expression during asymmetric ovarian development to control organ size in chick. Pitx2 gain/loss of function in chick, cell adhesion assays, mitotic spindle orientation analysis Proceedings of the National Academy of Sciences of the United States of America Medium 18678914
2006 Pitx2 asymmetric expression in visceral organs is controlled by an intronic asymmetric enhancer (ASE) containing multiple Foxh1-binding sites and an Nkx2-binding site, which are essential and sufficient for asymmetric enhancer activity and evolutionarily conserved. Mice lacking the ASE fail to manifest left-sided Pitx2 expression and exhibit laterality defects in most visceral organs. Targeted deletion of ASE enhancer in mice, transgenic enhancer assays, sequence conservation analysis Development (Cambridge, England) High 16835440
2015 Mutual antagonism between Pitx2 and the neighboring long noncoding RNA Playrr (expressed on the right side) is coordinated by asymmetric chromatin interactions dependent on Pitx2 and CTCF, demonstrated by CRISPR/Cas9 genome editing of Playrr, 3D FISH, and chromatin conformation capture (3C). Pitx2 auto-regulation directs chromatin topology to coordinate left-right transcription. CRISPR/Cas9 genome editing, 3D FISH, 3C/chromatin conformation capture, Pitx2 conditional KO Cell reports High 26411685
2016 Pitx2c haploinsufficiency depolarizes atrial resting membrane potential by reducing TASK-2 (TWIK-related acid-sensitive K+ channel 2) gene and protein expression, enhancing post-repolarization refractoriness and increasing effectiveness of Na-channel blockade by flecainide. Pitx2c+/- mice, electrophysiological study, optical mapping, patch clamp, gene/protein expression analysis, HEK cell Na-channel expression, computer modeling Journal of the American College of Cardiology High 27765191
2018 Pitx2 maintains mitochondrial function in cardiomyocytes through its gene regulatory network; Pitx2 conditional KO hearts develop adipose-like tissue after MI (non-cardiomyocyte origin by lineage tracing). Knockdown of the key mitochondrial Pitx2 target gene Cox7c recapitulates myocardial fat accumulation. Single-nuclei RNA-seq revealed oxidative stress in Pitx2-deficient hearts. Conditional KO, lineage tracing, single-nuclei RNA-seq, Cox7c knockdown, MI model Development (Cambridge, England) High 30143541
2022 Intestinal rotation requires a second wave of Pitx2 expression in the mesentery driven by mechanosensitive latent TGFβ (not Nodal as in the first wave); this TGFβ-Pitx2 signaling induces reciprocal tissue stiffness in the left mesentery as mechanical feedback with the right side, acting as an 'accelerator-brake' system for gut morphological symmetry breaking. Conditional Nodal deletion (dispensability shown), TGFβ pathway manipulation, biomechanical assays of mesenteric stiffness, chick and mouse embryo experiments Science (New York, N.Y.) High 36137018
2024 Nrf3 suppresses Pitx2 expression by binding the Pitx2 promoter and recruiting heterogeneous nuclear ribonucleoprotein K and DNA-methyltransferase 1 complex to increase DNA methylation at the Pitx2 locus. Pitx2 deficiency increases mitochondrial ROS; cardiac-specific Pitx2 overexpression attenuates MI-induced mitochondrial ROS and CM apoptosis. ChIP-seq (Nrf3 binding to Pitx2 promoter), IP-mass spectrometry, CM-specific AAV vectors, MitoParaquat, global and CM-specific Nrf3 KO mice Circulation High 40099370
2024 Heterozygous deletion of two CTCF binding sites ~1 Mb from PITX2 causes TAD fusion and chromatin conformation remodeling, resulting in opposite dysregulation of PITX2 expression: ectopic activation in the sinoatrial node and reduction in the ventricle. This demonstrates that remote CTCF-mediated TAD boundaries are required for tissue-specific PITX2 regulation. Patient genomic analysis, mouse knock-in of orthologous deletion, chromatin conformation assay (3C/Hi-C) in hiPSC-derived cardiomyocytes, cardiac electrophysiology Nature communications High 38643172
2024 PITX2 deficiency in human iPSC-derived atrial cardiomyocytes causes atrial mitochondrial dysfunction with increased number of smaller mitochondria, altered mitochondrial protein expression, and metabolic shift toward glycolysis. Dysregulation of COX7C and FOXO1 in PITX2-deficient atria was confirmed in human AF patient left atrial samples. CRISPR/Cas9 PITX2 KO in hiPSCs, electron microscopy, single-nuclear RNA-seq, mitochondrial respiration assays, gene expression in human patient tissue Cardiovascular research High 39129206
2023 RyR2 hyperactivity is a mechanism downstream of Pitx2 deficiency that enhances SR Ca2+ leak and AF inducibility in Pitx2+/- atrial myocytes; selective RyR2 inhibition with ent-verticilide reduces spontaneous Ca2+ release events and attenuates pacing-induced AF in Pitx2+/- mice. Pitx2+/- mouse model, Ca2+ spark/release measurements in permeabilized and intact atrial myocytes, burst pacing AF inducibility assay, pharmacological RyR2 inhibition Journal of molecular and cellular cardiology High 37080450
2001 pitx2 is required early in the Nodal signaling pathway for specification of endodermal and mesodermal germ layers in Xenopus and zebrafish; overexpression induces ectopic goosecoid and sox-17 while blocking mesoderm formation. Inhibition of pitx2 by a dominant-negative chimera (EnR-pitx2) blocks mesoderm/endoderm specification and impairs cellular response to Nodal signaling. Xenopus mRNA injection gain/loss of function, zebrafish Nodal pathway mutant analysis, animal cap assays Developmental biology Medium 11203696
2006 PITX2 C-terminal frameshift mutations (D122FS, W133Stop) associated with ARS have greater DNA binding than wild-type to the bicoid element and approximately 5-fold greater transcriptional activation of the prolactin promoter, even at lower expression levels—demonstrating that C-terminal mutations in PITX2 can be gain-of-function and that the C-terminal domain has inhibitory activity. In vitro DNA binding assays, transfection reporter assays in multiple cell lines including LS8 endogenous Pitx2-expressing line Birth defects research. Part A, Clinical and molecular teratology Medium 16498627
2013 Dact2 physically interacts with PITX2 and represses its transcriptional activity; PITX2 endogenously activates Dact2 expression creating a negative feedback loop. Dact2 inhibits PITX2-mediated activation of Wnt signaling (Topflash), and specifically inhibits PITX2 activation of Dlx2 and amelogenin promoters. Co-IP (physical interaction), reporter assays (Topflash, Dlx2, amelogenin promoters), Dact2 loss-of-function, PITX2 gain-of-function, immunohistochemistry PloS one Medium 23349981
2020 BMP10 is one of the most PITX2-repressed atrial genes, confirmed by RNA sequencing, quantitative PCR, and Western blotting in iPSC-derived cardiomyocytes and human left atrial appendage samples. Reduced left atrial cardiomyocyte PITX2 is associated with elevated circulating BMP10. RNA-seq, qPCR, Western blot in hiPSC-derived cardiomyocytes; human patient left atrial appendage samples JCI insight Medium 32814717

Source papers

Stage 0 corpus · 100 papers · ranked by NIH iCite citations
Year Title Journal Citations PMID
1999 Pitx2 regulates lung asymmetry, cardiac positioning and pituitary and tooth morphogenesis. Nature 474 10499586
2002 Identification of a Wnt/Dvl/beta-Catenin --> Pitx2 pathway mediating cell-type-specific proliferation during development. Cell 456 12464179
1998 Pitx2 determines left-right asymmetry of internal organs in vertebrates. Nature 431 9707115
1998 Pitx2, a bicoid-type homeobox gene, is involved in a lefty-signaling pathway in determination of left-right asymmetry. Cell 320 9708732
1999 The homeobox gene Pitx2: mediator of asymmetric left-right signaling in vertebrate heart and gut looping. Development (Cambridge, England) 301 10021341
2010 Pitx2 prevents susceptibility to atrial arrhythmias by inhibiting left-sided pacemaker specification. Proceedings of the National Academy of Sciences of the United States of America 252 20457925
2016 Pitx2 promotes heart repair by activating the antioxidant response after cardiac injury. Nature 249 27251288
2000 Mesendoderm and left-right brain, heart and gut development are differentially regulated by pitx2 isoforms. Development (Cambridge, England) 175 10662647
2003 The Wnt/beta-catenin-->Pitx2 pathway controls the turnover of Pitx2 and other unstable mRNAs. Molecular cell 148 14636578
2002 Pitx2 is required at multiple stages of pituitary organogenesis: pituitary primordium formation and cell specification. Development (Cambridge, England) 148 11807026
2007 Genotype-phenotype correlations in Axenfeld-Rieger malformation and glaucoma patients with FOXC1 and PITX2 mutations. Investigative ophthalmology & visual science 133 17197537
1997 Mouse Otlx2/RIEG expression in the odontogenic epithelium precedes tooth initiation and requires mesenchyme-derived signals for its maintenance. Developmental biology 126 9299120
2016 Pitx2 modulates a Tbx5-dependent gene regulatory network to maintain atrial rhythm. Science translational medicine 123 27582060
2001 Pitx2 expression defines a left cardiac lineage of cells: evidence for atrial and ventricular molecular isomerism in the iv/iv mice. Developmental biology 122 11180966
1997 Expression patterns of Brx1 (Rieg gene), Sonic hedgehog, Nkx2.2, Dlx1 and Arx during zona limitans intrathalamica and embryonic ventral lateral geniculate nuclear formation. Mechanisms of development 121 9347917
2012 PITX2 and FOXC1 spectrum of mutations in ocular syndromes. European journal of human genetics : EJHG 117 22569110
2003 The role of Pitx2 during cardiac development. Linking left-right signaling and congenital heart diseases. Trends in cardiovascular medicine 116 12732450
2014 Mutation of FOXC1 and PITX2 induces cerebral small-vessel disease. The Journal of clinical investigation 109 25250569
2000 The Pitx2 protein in mouse development. Developmental dynamics : an official publication of the American Association of Anatomists 109 10822271
2014 Pitx2-microRNA pathway that delimits sinoatrial node development and inhibits predisposition to atrial fibrillation. Proceedings of the National Academy of Sciences of the United States of America 103 24927531
2014 Pitx2, an atrial fibrillation predisposition gene, directly regulates ion transport and intercalated disc genes. Circulation. Cardiovascular genetics 102 24395921
2000 Variation in residual PITX2 activity underlies the phenotypic spectrum of anterior segment developmental disorders. Human molecular genetics 101 10958652
1996 Otlx2, an Otx-related homeobox gene expressed in the pituitary gland and in a restricted pattern in the forebrain. Molecular and cellular neurosciences 101 9026314
2005 PITX2, beta-catenin and LEF-1 interact to synergistically regulate the LEF-1 promoter. Journal of cell science 99 15728254
1998 Cloning and expression pattern of chicken Pitx2: a new component in the SHH signaling pathway controlling embryonic heart looping. Biochemical and biophysical research communications 98 9636662
2013 The Pitx2:miR-200c/141:noggin pathway regulates Bmp signaling and ameloblast differentiation. Development (Cambridge, England) 97 23863486
2006 Pitx2 promotes development of splanchnic mesoderm-derived branchiomeric muscle. Development (Cambridge, England) 88 17107996
2006 Conserved regulation and role of Pitx2 in situs-specific morphogenesis of visceral organs. Development (Cambridge, England) 86 16835440
2012 DNA methylation of the homeobox genes PITX2 and SHOX2 predicts outcome in non-small-cell lung cancer patients. Diagnostic molecular pathology : the American journal of surgical pathology, part B 84 22555092
2008 Myocardial Pitx2 differentially regulates the left atrial identity and ventricular asymmetric remodeling programs. Circulation research 84 18292603
2016 PITX2 Modulates Atrial Membrane Potential and the Antiarrhythmic Effects of Sodium-Channel Blockers. Journal of the American College of Cardiology 82 27765191
2020 Reduced left atrial cardiomyocyte PITX2 and elevated circulating BMP10 predict atrial fibrillation after ablation. JCI insight 79 32814717
2007 PITX2 and beta-catenin interactions regulate Lef-1 isoform expression. Molecular and cellular biology 71 17785445
2007 Sequential expression and redundancy of Pitx2 and Pitx3 genes during muscle development. Developmental biology 70 17540357
2003 PITX2 isoform-specific regulation of atrial natriuretic factor expression: synergism and repression with Nkx2.5. The Journal of biological chemistry 66 12692125
2001 Differential expression and functional analysis of Pitx2 isoforms in regulation of heart looping in the chick. Development (Cambridge, England) 64 11222154
2001 Antagonistic regulation of Dlx2 expression by PITX2 and Msx2: implications for tooth development. Gene expression 62 11763998
2015 Pitx2 impairs calcium handling in a dose-dependent manner by modulating Wnt signalling. Cardiovascular research 60 26243430
2017 PITX2-dependent gene regulation in atrial fibrillation and rhythm control. The Journal of physiology 59 28217939
2004 Characterization and prevalence of PITX2 microdeletions and mutations in Axenfeld-Rieger malformations. Investigative ophthalmology & visual science 57 14985297
2016 Sox2 and Lef-1 interact with Pitx2 to regulate incisor development and stem cell renewal. Development (Cambridge, England) 55 27660324
2011 Pitx2 confers left morphological, molecular, and functional identity to the sinus venosus myocardium. Cardiovascular research 55 22116619
2002 Pitx2 distinguishes subtypes of terminally differentiated neurons in the developing mouse neuroepithelium. Developmental biology 55 12453462
2001 The pitx2 homeobox protein is required early for endoderm formation and nodal signaling. Developmental biology 55 11203696
2016 PANCR, the PITX2 Adjacent Noncoding RNA, Is Expressed in Human Left Atria and Regulates PITX2c Expression. Circulation. Arrhythmia and electrophysiology 54 26783232
2008 Pitx2 regulates gonad morphogenesis. Proceedings of the National Academy of Sciences of the United States of America 53 18678914
2016 Downregulation of MicroRNA-644a Promotes Esophageal Squamous Cell Carcinoma Aggressiveness and Stem Cell-like Phenotype via Dysregulation of PITX2. Clinical cancer research : an official journal of the American Association for Cancer Research 51 27407092
2010 Pitx2 defines alternate pathways acting through MyoD during limb and somitic myogenesis. Development (Cambridge, England) 51 20978076
2011 Shroom3 and a Pitx2-N-cadherin pathway function cooperatively to generate asymmetric cell shape changes during gut morphogenesis. Developmental biology 50 21726547
2017 Pitx2 in Embryonic and Adult Myogenesis. Frontiers in cell and developmental biology 48 28507987
2010 Pitx2 is an upstream activator of extraocular myogenesis and survival. Developmental biology 46 21035439
2006 Novel mutations of FOXC1 and PITX2 in patients with Axenfeld-Rieger malformations. Investigative ophthalmology & visual science 46 16936096
2020 Pitx2-Sox2-Lef1 interactions specify progenitor oral/dental epithelial cell signaling centers. Development (Cambridge, England) 45 32439755
2017 Multiple Roles of Pitx2 in Cardiac Development and Disease. Journal of cardiovascular development and disease 45 29367545
2012 Increased expression of PITX2 transcription factor contributes to ovarian cancer progression. PloS one 45 22615897
2013 Homeobox transcription factor Pitx2: The rise of an asymmetry gene in cardiogenesis and arrhythmogenesis. Trends in cardiovascular medicine 44 23953978
2018 PITX2 deficiency and associated human disease: insights from the zebrafish model. Human molecular genetics 42 29506241
2018 Pitx2 maintains mitochondrial function during regeneration to prevent myocardial fat deposition. Development (Cambridge, England) 39 30143541
2019 PITX2 enhances progression of lung adenocarcinoma by transcriptionally regulating WNT3A and activating Wnt/β-catenin signaling pathway. Cancer cell international 38 31043858
2011 The significance of PITX2 overexpression in human colorectal cancer. Annals of surgical oncology 38 21479692
1998 Expression of the transcription factors Otlx2, Barx1 and Sox9 during mouse odontogenesis. European journal of oral sciences 38 9541211
2016 PITX2 DNA Methylation as Biomarker for Individualized Risk Assessment of Prostate Cancer in Core Biopsies. The Journal of molecular diagnostics : JMD 35 27939865
2009 Akt2-mediated phosphorylation of Pitx2 controls Ccnd1 mRNA decay during muscle cell differentiation. Cell death and differentiation 35 20019746
2012 Ebp2 and Brx1 function cooperatively in 60S ribosomal subunit assembly in Saccharomyces cerevisiae. Nucleic acids research 33 22319211
2025 Nrf3-Mediated Mitochondrial Superoxide Promotes Cardiomyocyte Apoptosis and Impairs Cardiac Functions by Suppressing Pitx2. Circulation 32 40099370
2015 PITX2 Loss-of-Function Mutation Contributes to Congenital Endocardial Cushion Defect and Axenfeld-Rieger Syndrome. PloS one 32 25893250
2012 pitx2 Deficiency results in abnormal ocular and craniofacial development in zebrafish. PloS one 32 22303467
2007 Nuclear factor 1 and T-cell factor/LEF recognition elements regulate Pitx2 transcription in pituitary development. Molecular and cellular biology 31 17562863
2015 Chromatin Architecture of the Pitx2 Locus Requires CTCF- and Pitx2-Dependent Asymmetry that Mirrors Embryonic Gut Laterality. Cell reports 30 26411685
2011 GABAergic and glutamatergic identities of developing midbrain Pitx2 neurons. Developmental dynamics : an official publication of the American Association of Anatomists 30 21246650
2005 Expression of Pitx2 in stromal cells is required for normal hematopoiesis. Blood 30 16195330
2023 The selective RyR2 inhibitor ent-verticilide suppresses atrial fibrillation susceptibility caused by Pitx2 deficiency. Journal of molecular and cellular cardiology 29 37080450
2022 Pitx2 patterns an accelerator-brake mechanical feedback through latent TGFβ to rotate the gut. Science (New York, N.Y.) 29 36137018
2004 PITX2 gain-of-function in Rieger syndrome eye model. The American journal of pathology 29 15509533
2023 PITX2 Knockout Induces Key Findings of Electrical Remodeling as Seen in Persistent Atrial Fibrillation. Circulation. Arrhythmia and electrophysiology 28 36763906
2002 Genetic analysis of PITX2 and FOXC1 in Rieger Syndrome patients from Brazil. Journal of glaucoma 28 11821690
2019 Oncogenic PITX2 facilitates tumor cell drug resistance by inverse regulation of hOCT3/SLC22A3 and ABC drug transporters in colon and kidney cancers. Cancer letters 27 30742940
2015 PITX2 loss-of-function mutation contributes to tetralogy of Fallot. Gene 27 26657035
2006 An unusual class of PITX2 mutations in Axenfeld-Rieger syndrome. Birth defects research. Part A, Clinical and molecular teratology 27 16498627
2011 Pitx2 regulates myosin heavy chain isoform expression and multi-innervation in extraocular muscle. The Journal of physiology 26 21727215
2006 Identification of four new PITX2 gene mutations in patients with Axenfeld-Rieger syndrome. Molecular vision 26 17167399
2018 PITX2 DNA-methylation predicts response to anthracycline-based adjuvant chemotherapy in triple-negative breast cancer patients. International journal of oncology 25 29328369
2014 Methylation of PITX2, HOXD3, RASSF1 and TDRD1 predicts biochemical recurrence in high-risk prostate cancer. Journal of cancer research and clinical oncology 25 24938434
2012 FGF9-Pitx2-FGF10 signaling controls cecal formation in mice. Developmental biology 25 22819677
2011 Modulation of conductive elements by Pitx2 and their impact on atrial arrhythmogenesis. Cardiovascular research 25 21427120
2005 Protein kinase C phosphorylation modulates N- and C-terminal regulatory activities of the PITX2 homeodomain protein. Biochemistry 25 15751970
2024 TAD boundary deletion causes PITX2-related cardiac electrical and structural defects. Nature communications 24 38643172
2024 PITX2 deficiency leads to atrial mitochondrial dysfunction. Cardiovascular research 24 39129206
2018 A novel PITX2 mutation in non-syndromic orodental anomalies. Oral diseases 24 29121437
2013 Dact2 represses PITX2 transcriptional activation and cell proliferation through Wnt/beta-catenin signaling during odontogenesis. PloS one 24 23349981
2007 Pitx2 prevents osteoblastic transdifferentiation of myoblasts by bone morphogenetic proteins. The Journal of biological chemistry 24 17951577
2022 Decoding the PITX2-controlled genetic network in atrial fibrillation. JCI insight 23 35471998
2013 PITX2 and non-canonical Wnt pathway interaction in metastatic prostate cancer. Clinical & experimental metastasis 23 24162257
2011 PITX2 AND PITX1 regulate thyrotroph function and response to hypothyroidism. Molecular endocrinology (Baltimore, Md.) 22 21964592
2009 Metamorphic pitx2 expression in the left habenula correlated with lateralization of eye-sidedness in flounder. Development, growth & differentiation 22 19843151
2007 Smad3 and Pitx2 cooperate in stimulation of FSHbeta gene transcription. Molecular and cellular endocrinology 22 18022758
2004 Cell-specific activation of the atrial natriuretic factor promoter by PITX2 and MEF2A. The Journal of biological chemistry 22 15466416
2017 The Predictive Value of PITX2 DNA Methylation for High-Risk Breast Cancer Therapy: Current Guidelines, Medical Needs, and Challenges. Disease markers 21 29138528
2006 Analysis of RNA splicing defects in PITX2 mutants supports a gene dosage model of Axenfeld-Rieger syndrome. BMC medical genetics 21 16834779
2019 Novel PITX2 mutations identified in Axenfeld-Rieger syndrome and the pattern of PITX2-related tooth agenesis. Oral diseases 20 31529555

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