| 2004 |
HFz6 acts as a negative regulator of canonical Wnt/β-catenin signaling: it does not activate the canonical pathway in response to Wnt-1 or Wnt-5a group ligands, and represses Wnt-3a-induced canonical signaling when co-expressed with HFz1. The repression operates downstream of the β-catenin destruction complex (does not affect β-catenin stabilization or TCF4 nuclear levels or β-catenin·TCF4 complex formation), but inhibits TCF/LEF binding to target DNA as shown by EMSA. HFz6 activates the TAK1-NLK pathway, which blocks TCF/LEF binding to target promoters. N'- and C'-terminal sequences of HFz6 are required for its repressive activity. |
Reporter assays (canonical Wnt luciferase), co-expression with HFz1/Dvl1/stabilized β-catenin(S33Y)/LiCl, EMSA for TCF/LEF-DNA binding, deletion mutagenesis of HFz6 termini, Western blotting for β-catenin and TCF4 levels |
The Journal of biological chemistry |
High |
14747478
|
| 2016 |
FZD6 activates CaMKII-TAK1-NLK signaling downstream, which attenuates canonical Wnt pathway activity while promoting STAT3 and NF-κB signaling, thereby driving a mesenchymal GBM phenotype. This places FZD6 in a regulatory circuit with TCF4-miR-125b/miR-20b. |
Pathway inhibition/activation assays, gene expression analysis in PN vs MES GBM subtypes, functional validation targeting differentially enriched pathways |
Nature communications |
Medium |
27698350
|
| 2016 |
FZD6 represses gastric cancer cell proliferation and migration via activation of the non-canonical Wnt pathway, and activation of non-canonical Wnt by FZD6 in turn ameliorates (reduces) canonical Wnt pathway activity. FZD6 is a direct target of miR-21, which suppresses FZD6 expression. |
Gain/loss-of-function experiments in gastric cancer cells, proliferation and migration assays, pathway reporter assays, miR-21 target validation |
American journal of translational research |
Medium |
27347343
|
| 2019 |
NPTX2 physically interacts with FZD6 to promote β-catenin nuclear translocation in colorectal cancer cells, resulting in increased MYC, cyclin D1, snail, and N-cadherin and decreased E-cadherin. siRNA knockdown of FZD6 almost completely reversed NPTX2-induced proliferative effects. |
Co-immunoprecipitation (physical interaction between NPTX2 and FZD6), siRNA knockdown of FZD6, β-catenin nuclear translocation assay, in vitro and in vivo proliferation/metastasis assays |
Cell death & disease |
Medium |
30833544
|
| 2019 |
lncRNA PCAT-1 directly interacts with FZD6 protein to regulate its stability; PCAT-1 activates the Wnt/β-catenin signaling pathway in an FZD6-dependent manner in AML cells. Overexpression of FZD6 partially abolishes the effects of PCAT-1 silencing on AML cell proliferation and apoptosis. |
RNA-protein interaction assay, gain/loss-of-function experiments, cell proliferation and apoptosis assays, Wnt/β-catenin pathway readouts |
American journal of translational research |
Medium |
31814913
|
| 2021 |
In T-ALL, WNT10B drives Wnt pathway activation primarily through the FZD6 receptor complex via ligand binding. shRNA-mediated silencing of FZD6 or pharmacological inhibition of WNT secretion (LGK974 PORCN inhibitor) reduces WNT10B/FZD6 protein complex formation, impairs intracellular effectors, and reduces leukemic cell expansion. |
Co-immunoprecipitation (WNT10B/FZD6 protein complex), shRNA gene silencing, small molecule (LGK974) inhibition, Wnt pathway effector analysis, cell proliferation assays |
Hematological oncology |
Medium |
33497493
|
| 2022 |
FZD6 knockout in melanoma does not affect cell proliferation but significantly reduces invasive ability in vitro and dramatically reduces lung metastasis in the Pten/BRaf mouse model. The invasive phenotype is mechanistically linked to canonical Wnt signaling and the epithelial-mesenchymal transition pathway. |
CRISPR/Cas9 knockout of FZD6, in vitro invasion assays, in vivo melanoma mouse model (Pten/BRaf), Wnt signaling and EMT marker analysis |
The Journal of investigative dermatology |
High |
36368445
|
| 2023 |
FZD6 knockdown (CRISPR/Cas9 Fzd6-Δ5 mice) produces depressive-like behavior (increased immobility in FST, reduced sucrose preference, decreased locomotion, reduced open-arm time in EPM) and reduces hippocampal cell proliferation (reduced Ki67+ and PCNA+ cells). Mechanistically, FZD6 KD decreases Gsk3β mRNA, phosphorylated GSK3β, and cytoplasmic β-catenin in hippocampus, establishing FZD6 as a positive regulator of canonical Wnt/β-catenin signaling in this context. |
CRISPR/Cas9 KO mouse model, behavioral tests (OFT, EPM, FST, TST, SPT), immunofluorescence for Ki67/PCNA, qRT-PCR and Western blot for Wnt pathway components |
Journal of advanced research |
High |
37321345
|
| 2025 |
FZD6 knockdown in prostate cancer suppresses growth in vitro and in vivo, impairs DNA double-strand break repair (measured by γH2AX foci resolution and DSB repair reporter assays), and reduces activities of SRC kinase and STAT3. DNA damage repair deficiency is mechanistically mediated through WEE1 downregulation via PLK1. A kinome-wide CRISPR-Cas9 screen reveals FZD6 inhibition sensitizes cells to PKMYT1 inhibition. |
shRNA knockdown, patient-derived xenograft models, γH2AX foci assay, DSB repair reporter assay, kinome-wide CRISPR-Cas9 screen, SRC/STAT3 activity assays, WEE1/PLK1 protein analysis |
Oncogene |
High |
41286306
|
| 2025 |
FZD6 overexpression promotes nuclear translocation of β-catenin, reduces NLRP3/caspase-1/GSDMD-mediated classical pyroptosis, and increases 5-fluorouracil resistance in colorectal cancer cells. Conversely, FZD6 knockdown decreases nuclear β-catenin, enhances pyroptosis, and reduces 5-FU resistance. |
Lentiviral FZD6 KD/OE, immunofluorescence and Western blot for nuclear β-catenin, microscopy and electron microscopy for pyroptosis morphology, CCK-8/colony formation/EdU assays |
Carcinogenesis |
Medium |
40810359
|
| 2024 |
In endothelial cells, shear stress triggers spatial reorganization of Fzd6 at the plasma membrane. The mutual exclusion of PCP proteins Fzd6 and Vangl1 at cell junctions augments differential junctional and cytoskeletal dynamics along the flow axis. This PCP signaling coordinates collective endothelial cell alignment to flow direction and proper vessel sprouting. |
Live imaging, subcellular fractionation/localization, biomimetic flow chambers, in vivo zebrafish vessel studies, mathematical modeling, loss-of-function for Vangl1 with Fzd6 localization readout |
bioRxivpreprint |
Medium |
bio_10.1101_2024.06.25.600357
|
| 2011 |
Viral vector-mediated inhibition of Fzd6 expression in the rat hippocampus produced anxiety- and depressive-like effects in behavioral models of depression, establishing Fzd6 as a functional CREB target gene regulated by chronic electroconvulsive seizure in the hippocampus. |
Chromatin immunoprecipitation-microarray (CREB binding), viral vector-mediated gene knockdown in rat hippocampus, behavioral models of depression/anxiety |
Biological psychiatry |
Medium |
21937024
|
| 2012 |
A homozygous nonsense mutation (p.E584X) in FZD6 causes autosomal-recessive nail dysplasia. Immunohistochemistry shows FZD6 is strongly expressed in the ventral nail matrix and nail bed, placing it as a critical regulator of nail plate growth and guidance. The mutation maps to the C-terminal domain, consistent with earlier findings that C-terminal sequences are required for FZD6 signaling function. |
Genome-wide linkage analysis, Sanger sequencing for mutation identification, immunohistochemistry on nail sections |
The British journal of dermatology |
Medium |
22211385
|
| 2018 |
WNT5A (a ligand highly expressed in liver non-TICs) activates FZD6 to drive Wnt/β-catenin signaling and liver tumor-initiating cell (TIC) self-renewal. FZD6 is the only Frizzled receptor overexpressed during liver tumorigenesis among FZD1-10. The lncRNA lncFZD6 recruits the BRG1-embedded SWI/SNF chromatin remodeling complex to the FZD6 promoter to activate FZD6 transcription; FZD6 drives liver TIC self-renewal in an FZD6-dependent manner. |
Expression profiling of FZD1-10, ChIP for BRG1 at FZD6 promoter, co-immunoprecipitation of lncFZD6-BRG1 complex, loss-of-function and rescue experiments for FZD6 in liver TIC self-renewal and tumor initiation |
Oncogene |
Medium |
29535420
|
| 2018 |
Luteolin upregulates FZD6 transcriptionally in prostate cancer cells, and FZD6 upregulation inhibits canonical Wnt signaling and suppresses prostate cancer stemness. FZD6 identified as a tumor suppressor that can abolish PCa stemness. |
iTRAQ-based quantitative proteomics, transcriptional upregulation analysis, Wnt signaling reporter assays, prostate cancer stem cell marker assays, proliferation and self-renewal assays |
Scientific reports |
Medium |
29867083
|
| 2021 |
FZD6 silencing in cervical cancer cells retards proliferation, invasion, and EMT, and inactivates Wnt/β-catenin signaling. Mechanistically, FTO demethylase stabilizes lncRNA HOXC13-AS (by reducing m6A modification), which then augments FZD6 expression through CBP-mediated H3K27 acetylation at the FZD6 locus. |
qRT-PCR, CCK-8, colony formation, Transwell assays; luciferase reporter, FISH, subcellular fractionation, ChIP, RNA immunoprecipitation for mechanism |
Journal of B.U.ON. |
Medium |
34564982
|
| 2025 |
HOXC10 transcription factor directly targets the FZD6 promoter to reduce FZD6 expression, thereby activating Wnt/β-catenin signaling and delaying skin fibroblast senescence and skin aging. |
Single-cell transcriptomics, ChIP for HOXC10 at FZD6 promoter, overexpression/KD in fibroblasts, senescence assays, in vivo aging models |
Research (Washington, D.C.) |
Medium |
41268215
|
| 2024 |
In CIA rat fibroblast-like synoviocytes, Fzd6 expression is elevated and drives NF-κB signaling activation (p-p65/p65 and p-IκBα/IκBα) along with pro-inflammatory cytokine expression (COX-2, IL-8, TNF-α). Fengshi Liuhe Decoction downregulates Fzd6 and suppresses this Fzd6/NF-κB signaling axis. |
qPCR and Western blot comparison of normal vs CIA rat FLS, ELISA for inflammatory cytokines, nuclear translocation assay for NF-κB p65 |
Gene |
Low |
38710294
|
| 2023 |
In colorectal cancer cells, linc00659 binds to IGF2BP1 (validated by RNA pulldown and RIP), and IGF2BP1 stabilizes FZD6 mRNA (validated by RNA stability assay), thereby activating Wnt/β-catenin signaling and promoting CRC cell proliferation. |
RNA pulldown and RNA immunoprecipitation for linc00659-IGF2BP1 interaction, RNA stability assay for FZD6 mRNA, Wnt/β-catenin Western blot, in vivo xenograft |
The journal of gene medicine |
Medium |
38009760
|
| 2025 |
FZD6 negatively regulates adipogenesis of bone marrow mesenchymal stem cells: FZD6 expression is decreased during adipogenic differentiation and in aplastic anemia BM-MSCs, and FZD6 overexpression alleviates miR-199a-5p-driven adipogenic differentiation. FZD6 is a direct target of miR-199a-5p (validated experimentally). |
miR-199a-5p inhibition experiments, luciferase reporter assay for miR-199a-5p targeting FZD6, FZD6 overexpression rescue of adipogenesis phenotype, expression profiling |
Scientific reports |
Medium |
41198743
|