| 1998 |
Integrin-linked kinase (ILK) overexpression promotes formation of a complex between β-catenin and LEF-1, leading to nuclear translocation of β-catenin and transcriptional activation by the LEF-1/β-catenin complex; LEF-1 protein levels are upregulated by ILK overexpression and rapidly modulated by cell detachment from extracellular matrix. |
Co-immunoprecipitation, Western blotting, invasion assays, overexpression in intestinal and mammary epithelial cells |
Proceedings of the National Academy of Sciences of the United States of America |
Medium |
9539744
|
| 1996 |
BMP-4 can activate Lef1 gene expression, and Lef1 expression in epithelium is required for transmission of inductive signals between epithelial and mesenchymal tissues during tooth and whisker organogenesis, as shown by tissue recombination experiments with Lef1-deficient embryos. |
Tissue recombination of normal and Lef1-null embryos, BMP-4 treatment, targeted gene inactivation |
Genes & development |
High |
8647435
|
| 2001 |
Lef1 requires Wnt signaling and stabilized β-catenin to activate hair-specific keratin genes and control hair differentiation; its HMG DNA-binding domain mediates these effects. A β-catenin-binding-domain-deleted Lef1 (ΔNLef1) instead promotes sebocyte differentiation rather than hair differentiation, demonstrating that Lef1's role in cell-fate decisions in multipotent skin stem cells depends on its β-catenin interaction status. |
Transgenic mouse overexpression, domain-deletion constructs (ΔNLef1), histological and gene expression analysis |
Genes & development |
High |
11445543
|
| 2001 |
LEF-1 physically interacts with the paired-like homeodomain protein Alx4 through Alx4's proline-rich N-terminal domain and LEF-1's HMG-box DNA-binding domain; LEF-1 and Alx4 can bind simultaneously to adjacent sites on the N-CAM promoter and alter its activity, providing a mechanism for mesenchymal-specific LEF-1 activity. |
Co-immunoprecipitation, pulldown assays, electrophoretic mobility shift assay (EMSA), luciferase reporter assay, domain-deletion analysis |
The Journal of biological chemistry |
High |
11696550
|
| 2004 |
LEF1 directly binds multiple sites in the Dll1 (Delta-like 1) promoter in vitro and in vivo, and LEF1-binding site mutations in the Dll1-LacZ transgene impair its expression in presomitic mesoderm; induced LEF1-β-catenin expression activates endogenous Dll1, establishing that Wnt/LEF1 signaling links to Notch signaling via direct transcriptional regulation of Dll1 in somitogenesis. |
Chromatin immunoprecipitation (ChIP), in vitro DNA binding, Dll1-LacZ transgenic reporter with LEF1-site mutations, conditional LEF1-β-catenin induction in fibroblasts |
Genes & development |
High |
15545629
|
| 2005 |
Loss of Lef1 in mice causes significantly increased apoptosis specifically within the dental epithelium (not mesenchyme), arresting tooth development at the bud stage; FGF4 treatment inhibits apoptosis and rescues tooth development in Lef1-null mice, identifying LEF1 as a critical epithelial survival factor acting upstream of FGF signaling in tooth morphogenesis. |
Lef1 knockout mouse analysis, TUNEL apoptosis assay, Wnt1-Cre/R26R cell-lineage tracing, FGF4 rescue experiment |
Developmental biology |
High |
15649466
|
| 2005 |
Nrarp stabilizes LEF1 protein by blocking its ubiquitination; Nrarp knockdown in zebrafish phenocopies lef1 knockdown in neural-crest-cell development, and Nrarp independently regulates LEF1 protein turnover (Wnt pathway) separately from its regulation of Notch signaling. |
Antisense morpholino knockdown in zebrafish, ubiquitination assay, co-immunoprecipitation, Western blotting |
Nature cell biology |
High |
16228014
|
| 2007 |
LEF1 is a decisive transcription factor in neutrophil granulopoiesis, controlling proliferation, lineage commitment, and granulocytic differentiation by directly regulating target genes C/EBP-α, cyclin D1, c-myc, survivin, and the ELA2 (neutrophil elastase) promoter; myeloid progenitors from severe congenital neutropenia patients show severe downregulation of LEF1 and its targets. |
Gene expression analysis in primary patient cells, promoter binding assays (ELA2 promoter), functional studies in myeloid progenitors |
Annals of the New York Academy of Sciences |
Medium |
17360796
|
| 2007 |
PITX2 isoforms directly regulate the LEF1 promoter (identified by ChIP); β-catenin synergistically enhances LEF1 promoter activation in combination with PITX2 and Lef1. PITX2 interacts with Lef1 at two sites (the β-catenin-binding domain is dispensable), while β-catenin binds the PITX2 homeodomain and Lef1 binds the PITX2 C-terminal tail; all three proteins can interact simultaneously. |
Chromatin immunoprecipitation (ChIP), luciferase reporter assay, co-immunoprecipitation, domain-deletion analysis, transgenic mouse Lef1-LacZ reporter |
Molecular and cellular biology |
High |
17785445
|
| 2009 |
LEF1 occupies and activates the androgen receptor (AR) promoter in prostate cancer cells; LEF1 overexpression increases AR expression and enhances growth and invasion, while LEF1 knockdown decreases AR expression and reduces growth and invasion in androgen-independent prostate cancer cells. |
Chromatin immunoprecipitation (ChIP), gel shift (EMSA), luciferase reporter assay, siRNA knockdown, overexpression |
Cancer research |
High |
19351848
|
| 2009 |
BMP2 stimulates expression of a naturally occurring N-terminally truncated Lef1 isoform (Lef1ΔN) driven by an alternative promoter (p2) within intron 3-4 of Lef1, while Wnt3a blocks this expression; Runx2 regulates the p2 promoter activity; stable overexpression of Lef1ΔN in osteoblasts induces osteocalcin and type 1 collagen, promoting terminal differentiation. |
Promoter reporter assays, Runx2 knockdown/overexpression, stable overexpression of Lef1ΔN, RT-PCR, gene expression analysis |
Journal of cellular physiology |
Medium |
19650108
|
| 2011 |
The splicing factor CELF2 controls signal-dependent alternative splicing of LEF1 exon 6 by binding two intronic sequences flanking the regulated exon; inclusion of exon 6 is required for optimal TCR-α chain mRNA expression during thymic development and upon T-cell signaling. |
siRNA knockdown of CELF2, splice-site blocking oligonucleotides, RT-PCR isoform analysis, RNA immunoprecipitation, functional readout of TCR-α expression |
Molecular and cellular biology |
High |
21444716
|
| 2014 |
LEF-1 translation is regulated by an IRES in its 5' UTR; the LEF1 IRES recruits eIF4A and is controlled by a Bcr-Abl–mTOR–eIF4A axis in CML cells. Inhibition of mTOR (PP242) or eIF4A (hippuristanol) suppresses IRES-mediated LEF1 translation and triggers dissociation of LEF1 mRNA from polyribosomes. |
IRES reporter assays, polyribosome fractionation, pharmacological inhibition with PP242 and hippuristanol, primary patient CML cell analysis |
Open biology |
High |
25392452
|
| 2014 |
LEF1 directly binds to the CYLD promoter and suppresses CYLD transcription; upon selenite treatment, LEF1 dissociates from the CYLD promoter, relieving suppression of CYLD (a deubiquitinase), leading to removal of K63-linked ubiquitin chains from RIP1, formation of a death-inducing complex, and caspase-8-dependent apoptosis in colorectal cancer cells. |
Chromatin immunoprecipitation (ChIP), siRNA knockdown, Western blotting, xenograft model with immunohistochemistry |
Cell death & disease |
Medium |
24577083
|
| 2015 |
miR-34a directly targets the 3'-UTR of LEF1 mRNA to repress its expression, and this miR-34a-LEF1 axis regulates epithelial-mesenchymal transition (EMT), migration, and invasion of prostate cancer cells; luciferase reporter assays confirmed direct 3'-UTR binding. |
Luciferase reporter assay with LEF1 3'-UTR, miR-34a overexpression/inhibition, migration and invasion assays |
Molecular cancer research : MCR |
Medium |
25587085
|
| 2015 |
LEF1 directly regulates tyrosinase (TYR) gene transcription; LEF1 binds to the core GTTTGAT sequence (-56 to -50) in the TYR promoter as shown by ChIP and EMSA; LEF1 and MITF synergistically transactivate the TYR promoter. |
Luciferase reporter assay, siRNA knockdown, ChIP, promoter deletion/mutation analysis, EMSA (implied by 'LEF-1 interacts with TYR promoter') |
PloS one |
Medium |
26580798
|
| 2016 |
Tcf1 and Lef1 possess intrinsic histone deacetylase (HDAC) activity; mutation of five conserved amino acids in the Tcf1 HDAC domain diminishes HDAC activity and impairs suppression of CD4+ lineage genes in CD8+ T cells; Tcf1/Lef1-deficient CD8+ T cells exhibit histone hyperacetylation at lineage-inappropriate loci. |
HDAC activity assay, domain mutagenesis (5-aa mutation), histone acetylation profiling, conditional knockout mouse model, gene expression analysis |
Nature immunology |
High |
27111144
|
| 2016 |
Sp5 and Sp8 bind directly to GC boxes in Wnt target gene enhancers and interact with chromatin-bound Tcf1/Lef1 to facilitate recruitment of β-catenin to select target gene enhancers, acting as gene-specific transcriptional coactivators in a feed-forward loop. |
ChIP-seq in mouse embryos and ESCs, co-immunoprecipitation, enhancer reporter assays, double-mutant genetic analysis |
Proceedings of the National Academy of Sciences of the United States of America |
Medium |
26969725
|
| 2016 |
Sox2 acts as a transcriptional repressor that directly binds a functional site in the Lef-1 promoter and suppresses β-catenin-dependent Lef-1 transcription; ChIP and DNA-protein binding (EMSA) confirmed Sox2 occupancy; suppression of Sox2 in SMG placodes relieves repression and enables Wnt-induced Lef-1 expression during submucosal gland morphogenesis. |
ChIP, EMSA/DNA-protein binding, luciferase reporter assay with promoter mutation, conditional Sox2 deletion, primary airway epithelial cultures |
American journal of physiology. Lung cellular and molecular physiology |
High |
24487391
|
| 2019 |
The m6A methyltransferase METTL3 promotes LEF1 mRNA m6A methylation and increases LEF1 total mRNA levels; METTL3 silencing decreases LEF1 m6A methylation and mRNA level, reduces Wnt/β-catenin signaling activity, and impairs osteosarcoma cell proliferation/invasion; LEF1 overexpression abrogates METTL3 silencing effects. |
Lentiviral METTL3 silencing, m6A methylation assay, RT-PCR, rescue overexpression of LEF1, functional proliferation/invasion assays |
Biochemical and biophysical research communications |
Medium |
31253399
|
| 2019 |
LEF-1 drives nuclear localization of β-catenin in myeloid leukemia cells; nuclear LEF-1 and β-catenin levels are tightly correlated; LEF-1 knockdown perturbs β-catenin nuclear localization and transcriptional activation, while LEF-1 overexpression promotes nuclear β-catenin accumulation and Wnt-responsive transcription in previously Wnt-unresponsive cells. |
Nuclear/cytoplasmic proteomic fractionation, β-catenin interactome by mass spectrometry, LEF-1 knockdown and overexpression, reporter assays, primary AML blast analysis |
Haematologica |
High |
30630973
|
| 2019 |
MYC directly activates LEF1 transcription (ChIP-seq confirms MYC occupancy at LEF1 locus); MYC-induced LEF1 causes retention of β-catenin in the nucleus activating the Wnt pathway; LEF1 is required for MYC-induced expression of PPARδ and ACAD9; LEF1 is required for viability of MYC-expressing colon cancer cells. |
RNA-seq, ChIP-seq, RT-qPCR, Western blotting, siRNA knockdown, metabolomics |
Cell communication and signaling : CCS |
Medium |
31623618
|
| 2019 |
TCF1/LEF1 interact with HTLV-1 Tax protein and inhibit Tax-dependent viral gene expression, NF-κB activation, and AP-1 activation; HTLV-1 replication is suppressed in the presence of TCF1 or LEF1; T-cell activation suppresses TCF1/LEF1 expression, enabling Tax function. |
Co-immunoprecipitation, reporter assays (NF-κB, AP-1, viral LTR), TCF1/LEF1 overexpression, T-cell activation experiments, STLV-1-infected macaque thymus analysis |
Proceedings of the National Academy of Sciences of the United States of America |
Medium |
25646419
|
| 2019 |
SNAIL1 upregulates LEF1 expression; LEF1 knockout (CRISPR/Cas9) and expression of a β-catenin-binding-deficient LEF1 mutant both impair SNAIL1-induced alternative Wnt/β-catenin target gene expression and cancer cell invasion; LEF1 accounts for ~35% of SNAIL1-induced transcriptional changes in colorectal cancer cells, acting as a strictly β-catenin-dependent downstream effector of SNAIL1. |
CRISPR/Cas9 LEF1 knockout, LEF1 β-catenin-binding mutant engineering, conditional SNAIL1 expression, transcriptome analysis, invasion assay, xenotransplantation |
International journal of cancer |
High |
31463973
|
| 2019 |
Mutant Lef1 (β-catenin-independent) transcriptionally activates Gata6 independently of β-catenin; Gata6 ablation in mutant Lef1-overexpressing mice decreases the proportion of sebaceous gland tumors while increasing total tumor burden and correlating with impaired DNA mismatch repair (decreased Mlh1, Msh2). |
Transgenic mouse models (mutant Lef1 overexpression, Gata6 conditional KO), in utero lentiviral Gata6 overexpression, gene expression analysis, tumor phenotyping |
The EMBO journal |
Medium |
30886049
|
| 2019 |
Tcf1 and Lef1 are required for immunosuppressive function of regulatory T cells; Tcf1/Lef1-deficient Tregs show reduced expression of signature genes (Ikzf4, Izumo1r) and aberrant upregulation of cytotoxic CD8+ effector genes (Prdm1, Ifng); Tcf1 ChIP-seq reveals co-occupancy of Tcf1 and Foxp3 at key Treg signature and cytotoxic effector gene loci. |
Conditional Treg-specific Tcf1/Lef1 double KO, transcriptomic analysis, Tcf1 ChIP-seq, colitis protection assay, autoimmunity phenotyping |
The Journal of experimental medicine |
High |
30837262
|
| 2019 |
Asporin (ASPN) directly binds LEF1 and promotes LEF1-mediated transcriptional activation of PTGS2, IL6, and WISP1 promoters independently of β-catenin; ASPN-mediated suppression of gastric cancer cell apoptosis is abolished by LEF1 knockdown or PTGS2 inhibition. |
Co-immunoprecipitation (ASPN-LEF1 interaction), ChIP (LEF1 promoter occupancy at PTGS2, IL6, WISP1), luciferase reporter assay, siRNA knockdown, overexpression rescue |
Oncogene |
Medium |
34127813
|
| 2021 |
Tcf1 and Lef1 maintain three-dimensional genome organization in mature CD8+ T cells at multiple scales; Tcf1 directly enforces chromatin interactions and accessibility, promoting formation of interconnected hubs for T cell identity gene promoter–enhancer contacts and repression of non-T lineage genes. |
Hi-C (chromosome conformation capture), ATAC-seq (chromatin accessibility), Tcf1 ChIP-seq, conditional ablation of Tcf1/Lef1 in mature CD8+ T cells, transcriptomics |
Nature communications |
High |
34615872
|
| 2021 |
LEF1 recruits PRMT6 (protein arginine methyltransferase 6) to the CCND1 (cyclin D1) promoter; LEF1 knockdown reduces cyclin D1 expression; PRMT6 knockdown increases G1 cell cycle arrest and decreases proliferation. |
Co-immunoprecipitation (LEF1-PRMT6 interaction), ChIP (LEF1/PRMT6 at CCND1 promoter), siRNA knockdown, cell cycle analysis |
Oncogenesis |
Medium |
34001852
|
| 2021 |
Oligonucleotide-based PROTACs (O'PROTACs) incorporating LEF1-binding double-stranded DNA sequences can induce proteasomal degradation of LEF1 protein via E3 ubiquitin ligase recruitment, impeding LEF1 transcriptional activity and inhibiting cancer cell growth in vitro and in vivo. |
O'PROTAC protein degradation assay, ubiquitination assay, transcriptional activity reporter, cell viability and xenograft tumor growth assays |
Advanced science (Weinheim, Baden-Wurttemberg, Germany) |
Medium |
34397171
|
| 2021 |
Loss of Lef1 in Apc-mutant intestinal adenomas markedly increases tumor initiation and cell proliferation, reduces Wnt antagonist expression, increases Myc expression, and promotes ectopic crypt formation, revealing a negative feedback role for ectopic Lef1 that suppresses intestinal tumorigenesis by restricting adenoma cell dedifferentiation. |
Conditional Lef1 deletion in intestinal stem cells of Apc-mutant mice, tumor burden and proliferation quantification, gene expression analysis |
Science advances |
High |
34788095
|
| 2019 |
Zeb1 is indirectly recruited to regulatory regions of glioblastoma target genes via interaction with Lef1 (Wnt pathway effector), resulting in transcriptional activation independently of Wnt signaling; this Zeb1/Lef1 co-regulatory mechanism activates invasion-promoting genes including Prex1. |
Genome-wide Zeb1 ChIP-seq, transcriptomics in glioblastoma stem-like cells, Lef1 ChIP-seq, overexpression and knockdown, in vivo invasion assay |
The EMBO journal |
Medium |
29903919
|
| 2016 |
Lef1-expressing fibroblasts in neonatal papillary dermis constitute a transient regenerative cell type; gain-of-function Lef1 expression in adult dermal fibroblasts primes the skin macroenvironment to enhance repair and regeneration of hair follicles with arrector pili muscles, while loss-of-function Lef1 deletion impairs this regenerative capacity. |
scRNA-seq, gain-of-function and loss-of-function genetic mouse models for Lef1 in fibroblasts, wound healing assays, histological analysis |
eLife |
Medium |
32990218
|
| 2023 |
LEF1 overexpression in NKT cells drives a central memory transcriptional program, promoting CD62L+ frequency and NKT expansion while limiting exhaustion; CRISPR/Cas9-mediated LEF1 knockout reduces CD62L+ frequency after stimulation; LEF1-expressing CAR-NKTs show superior neuroblastoma tumor control in vivo. |
CRISPR/Cas9 LEF1 knockout, LEF1 overexpression, Wnt3a ligand treatment, transcriptional profiling, xenograft tumor model |
Cancer immunology research |
Medium |
36484736
|
| 2019 |
LEF1 inhibition decreases DCLK1-B expression by blocking LEF1 binding to the DCLK1-B promoter in colorectal cancer cells; LEF1/DCLK1-B axis regulates cancer stemness and self-renewal; niclosamide blocks LEF1-DCLK1-B promoter binding and eradicates cancer stem-like cells. |
ChIP (LEF1 occupancy at DCLK1-B promoter), siRNA/shRNA knockdown, luciferase reporter, sphere formation assays, xenograft model |
Clinical cancer research : an official journal of the American Association for Cancer Research |
Medium |
30446587
|
| 2019 |
LEF1 directly activates transcription of the TGF-β pathway gene ID1 by binding to its promoter in esophageal squamous cell carcinoma; ASPN-mediated LEF1-ID1 activation promotes cancer stem cell-like properties and tumorigenicity. |
Luciferase reporter assay, ChIP-qPCR (LEF1 binding at ID1 promoter), RNA-seq, siRNA knockdown |
Journal of experimental & clinical cancer research : CR |
Medium |
31296250
|
| 2021 |
β-catenin/LEF1 complex directly binds the IGF-IIR promoter (putative LEF1 consensus site identified) and activates IGF-IIR expression under Ang-II-induced hypertensive conditions in cardiac cells, promoting cardiac hypertrophy. |
Luciferase reporter assay, immunoprecipitation, nuclear-cytosolic protein fractionation, Western blot in H9c2 cells and SHR rat tissue |
International journal of molecular sciences |
Low |
31480672
|
| 2023 |
Differential expression of long and short LEF1 isoforms is a key regulatory mechanism of cellular senescence; LEF1 dysregulation is associated with idiopathic pulmonary fibrosis; this isoform balance was identified computationally and validated in cell culture and human lung tissue. |
Transcriptome comparative analysis, cell culture senescence assays, RT-qPCR in human lung tissue samples, computational transcriptional network analysis |
Aging cell |
Low |
37961030
|