| 2013 |
β-catenin inactivates Tcf7l1 by removing it from DNA (rather than switching it to a coactivator complex), which leads to Tcf7l1 protein degradation. Mouse genetic experiments demonstrated that Tcf7l1 inactivation is the only required effect of the Tcf7l1–β-catenin interaction. |
Co-immunoprecipitation, DNA-binding assays, mouse genetic (knockout/knock-in) epistasis experiments |
Cell Reports |
High |
23810553
|
| 2013 |
Tcf7l1 repressor activity is necessary in pluripotent epiblast cells for rapid lineage specification during gastrulation; Tcf7l1−/− embryos show delayed mesoderm specification uncoupled from primitive streak induction. |
Tcf7l1 knockout mouse analysis, embryo phenotyping, lineage marker analysis |
Development |
Medium |
23487311
|
| 2015 |
Downstream of GSK3 inhibition, β-catenin reduces Tcf7l1 DNA binding (acting on protein) while elevated cMyc reduces Tcf7l1 mRNA levels; together they de-repress FoxA2, a pioneer factor for endoderm specification. Deletion of Tcf7l1 alone is sufficient to allow FoxA2 upregulation in the presence of Activin. |
GSK3 inhibitor treatment, Tcf7l1 knockout ESCs, chromatin immunoprecipitation, qRT-PCR, rescue experiments |
The EMBO Journal |
High |
26675138
|
| 2015 |
Jmjd6 (a JmjC-domain protein) physically interacts with Tcf7l1 at the region responsible for Groucho corepressor binding, displacing Groucho and thereby de-repressing Tcf7l1 transcriptional targets; Jmjd6 antagonizes Tcf7l1 repressor activity and enhances β-catenin-induced gene activation in cells and Xenopus embryos. |
Co-immunoprecipitation (pulldown), reporter gene assays, Jmjd6 loss-of-function (morpholino), Xenopus embryo axis/gene-expression analysis |
Journal of Biological Chemistry |
Medium |
26157142
|
| 2016 |
TCF7L1 functions as a transcriptional repressor that buffers β-catenin/TCF target gene expression in colorectal cancer; loss of TCF7L1 activates EPHB3 (a tumor suppressor/Paneth cell differentiation marker), and EPHB3 knockdown partially rescues growth of TCF7L1-null HCT116 cells. |
TCF7L1 knockdown/knockout in HCT116 CRC cells, mouse xenograft model, EPHB3 knockdown epistasis, colony formation and cell-cycle assays |
Scientific Reports |
Medium |
27333864
|
| 2017 |
TCF7L1 promotes skin tumor growth and overrides oncogenic RAS-induced senescence independently of β-catenin interaction, using separation-of-function mutants. LCN2 was identified as a major downstream transcriptional effector of TCF7L1 driving tumor growth. |
Separation-of-function mutants (β-catenin-binding domain deleted), TCF7L1 overexpression/knockdown in mouse skin SCC model and xenograft, transcriptome profiling, LCN2 gain/loss-of-function assays |
eLife |
High |
28467300
|
| 2018 |
Tcf7l1 directly promotes cardiomyocyte differentiation from ESCs in a β-catenin-independent manner; Tcf7l1-VP16 (activation domain fusion) and Tcf7l1dN (lacking β-catenin-binding domain) retain pro-cardiac activity, whereas Tcf7l1-En (repressor fusion) is ineffective. |
Temporally controlled Tcf7l1 expression in Tcf7l1-null ESCs, domain-swap fusion constructs (VP16, EnR, dN), cardiomyocyte differentiation assays |
Stem Cell Research & Therapy |
Medium |
30326964
|
| 2019 |
Tcf7l1 transcriptionally represses Nanog in liver cancer stem cells (independently of β-catenin), attenuating their self-renewal. IGF signaling stimulates Tcf7l1 phosphorylation and protein degradation through the MEK/ERK pathway. |
Ectopic expression/knockdown in liver CSC populations, ChIP or reporter assays for Nanog repression, IGF pathway inhibition, phosphorylation assays |
Stem Cells |
Medium |
31322782
|
| 2020 |
β-catenin recruits casein kinase 2 (CK2, specifically Csnk2α1) to phosphorylate Tcf7l1, promoting its protein degradation in mouse ESCs. CK2 inhibition blocks CHIR99021-induced Tcf7l1 reduction; Csnk2α1 physically interacts with Tcf7l1 and this interaction is enhanced by GSK3 inhibition. |
CK2 inhibitor treatment (TBB/DMAT), Csnk2 overexpression/knockdown, co-immunoprecipitation of Csnk2α1–Tcf7l1, protein stability assays in mESCs |
Biochemical and Biophysical Research Communications |
Medium |
31987502
|
| 2021 |
TCF7L1 directly binds the regulatory sequences of IL-8 and CXCR2 promoters upon WNT4 activation, upregulating IL-8/CXCR2 signaling to drive neuroendocrine differentiation and cell motility in prostate cancer. |
ChIP at IL-8/CXCR2 regulatory regions, TCF7L1 gain/loss-of-function, WNT4 stimulation, cell motility assays |
Oncogenesis |
Medium |
34799554
|
| 2023 |
TCF7L1 binds and represses naive pluripotency factor genes and formative pluripotency regulators (including Otx2 and Lef1), thereby driving pluripotency exit and primitive endoderm (PE) specification; Tcf7l1 deletion abrogates PE differentiation without restraining epiblast priming. |
Time-series RNA sequencing, promoter occupancy (ChIP), Tcf7l1 conditional knockout in mESCs and preimplantation embryos |
Nature Communications |
High |
36869101
|
| 2023 |
RNF2 (an E3 ubiquitin ligase) ubiquitinates TCF7L1 and promotes its degradation upon Wnt signaling activation, destabilizing nuclear TCF7L1 to permit Wnt target gene transcription and controlling the threshold, persistence, and termination of Wnt signaling. |
RNF2 loss-of-function, ubiquitination assays, TCF7L1 protein stability measurements, Wnt target gene reporter assays |
Scientific Reports |
Medium |
37957244
|
| 2023 |
TCF7L1 binds a promoter-proximal Wnt-responsive element (WRE) at the LGR5 locus via a consensus TCF binding element to repress LGR5 expression; restoring LGR5 rescues TCF7L1-mediated reduction in spheroid formation of CRC cells. |
ChIP (TCF7L1 binding at LGR5 WRE), TCF7L1 knockdown/overexpression, CRISPRa/i epigenetic modulation, spheroid formation rescue assays |
Genes |
Medium |
36833408
|
| 2023 |
TCF7L1 promotes tuft cell differentiation in the adult small intestine and prevents precocious differentiation of embryonic intestinal progenitors; Tcf7l1 deficiency upregulates Notch effector Rbp-J, causing loss of embryonic secretory progenitors. |
Conditional Tcf7l1 knockout mice, intestinal epithelium phenotyping, marker analysis (tuft cell, secretory lineage, Notch pathway targets) |
Cells |
Medium |
37296573
|
| 2024 |
Tbl1 (Tbl1x) physically interacts with Tcf7l1 and translocates from cytoplasm to nucleus with β-catenin upon GSK3 inhibition, acting as an adaptor to promote Tcf7l1 ubiquitylation and degradation in mESCs, thereby maintaining naïve pluripotency. Tblr1 affects Tcf7l1 levels but does not interact with it directly. |
Co-immunoprecipitation (Tbl1–Tcf7l1 interaction), Tbl1/Tblr1 overexpression and knockdown, ubiquitylation assays, subcellular fractionation/nuclear translocation imaging, mESC self-renewal assays |
Journal of Cell Science |
Medium |
38639717
|
| 2024 |
A chromatin-associated TCF7L1 protein complex in human ESCs was characterized by RIME (rapid immunoprecipitation of endogenous proteins), identifying known and novel chromatin-bound partners of TCF7L1 in primed pluripotent cells. |
RIME (endogenous chromatin IP coupled to mass spectrometry) in hESCs |
Proteomics |
Low |
38629187
|
| 2024 |
TCF7L1 represses GAS1 expression by binding its genomic locus; TCF7L1-mediated GAS1 repression promotes migration, invasion, and adhesion of colorectal cancer cells. |
TCF7L1 silencing/overexpression, genome-wide TCF7L1 ChIP-seq, transcriptome analysis, GAS1 rescue experiments, migration/invasion assays |
Scientific Reports |
Medium |
38816533
|
| 2024 |
TCF7L1-mediated upregulation of HSPB6 suppresses the PI3K/AKT/mTOR signaling pathway in bladder cancer cells, inhibiting proliferation and metastasis. |
TCF7L1 overexpression/knockdown, RNA sequencing, western blot for PI3K/AKT/mTOR pathway components, cell proliferation and invasion assays |
Journal of Biological Chemistry |
Low |
39608715
|
| 2026 |
O-GlcNAcylation of TCF7L1 (promoted by ONX-0914 activation of the hexosamine biosynthetic pathway) stabilizes TCF7L1 protein, which in turn transcriptionally represses androgen receptor (AR) expression to suppress prostate cancer progression. |
O-GlcNAcylation assays, protein stability assays, TCF7L1 overexpression in xenograft models, qPCR/western blot for AR and EMT markers |
Oncology Research |
Medium |
41930151
|
| 2017 |
Tcf7l1 promotes transcription of Klf4 in early Xenopus embryos in a β-catenin-independent manner; a dominant-negative form of Tcf7l1 lacking the β-catenin binding motif still activates Klf4 transcription, and cycloheximide treatment showed a direct transcriptional effect. |
Tcf7l1 overexpression and dominant-negative mutant (dnTcf7l1) in Xenopus embryos, Klf4 promoter-reporter assay, cycloheximide treatment |
Journal of Biomedical Research |
Low |
29336356
|
| 2014 |
Sox4 directly regulates Tcf7l1 transcription (identified by microarray and ChIP); Tcf7l1 is a key downstream effector of Sox4 in BCR-ABL+ ALL, as Tcf7l1 knockdown mimics Sox4 loss and ectopic Tcf7l1 rescues proliferation in Sox4-knockout leukemic cells. |
Microarray, ChIP (Sox4 binding at Tcf7l1 locus), Tcf7l1 knockdown, Sox4 knockout with Tcf7l1 ectopic rescue, in vitro and in vivo leukemia progression assays |
Haematologica |
Medium |
24997151
|