Fzd4 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
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| Symbol | FZD4 |
| Full Name | Frizzled Class Receptor 4 |
| Chromosome | 11q14.2 |
| NCBI Gene ID | 2762 |
| Ensembl ID | ENSG00000174804 |
| OMIM ID | 604579 |
| UniProt ID | Q9ULV1 |
| Associated Diseases | Familial Exudative Vitreoretinopathy, Alzheimer's Disease, Stroke |
FZD4 (Frizzled Class Receptor 4) is a seven-transmembrane receptor that primarily activates canonical Wnt/β-catenin signaling. It plays essential roles in vascular development, neural tube formation, and blood-brain barrier (BBB) maintenance. FZD4 is expressed in endothelial cells, neural progenitors, and mature neurons.
FZD4 is a primary receptor for Wnt/β-catenin pathway:
- Binds Wnt1, Wnt3, Wnt3A, Wnt5A
- Forms complexes with LRP5/6 co-receptors
- Activates β-catenin stabilization
- Regulates TCF/LEF target gene transcription
FZD4 critically regulates BBB formation and maintenance:
- Controls endothelial cell tight junction formation
- Regulates BBB-specific gene expression
- Maintains cerebrovascular integrity
- Protects against stroke damage
FZD4 in nervous system development:
- Neural tube closure
- Neuronal progenitor proliferation
- Cortical layering
- Synapse formation
FZD4 mutations cause FEVR:
- Autosomal dominant inheritance
- Incomplete vascularization of retina
- Neovascularization and retinal detachment
FZD4 contributes to AD pathogenesis:
- BBB dysfunction in AD
- Reduced Wnt signaling
- Therapeutic target potential
¶ Stroke and Cerebrovascular Disease
FZD4 protective effects:
- Reduces infarct size
- Protects BBB integrity
- Promotes post-stroke recovery
FZD4 is expressed in:
- Endothelial cells: Brain microvasculature
- Neural progenitors: Ventricular zone
- Retina: Retinal vasculature
- Brain: Cortex, hippocampus, cerebellum
- Peripheral tissues: Lung, heart, intestine
- FZD4 and blood-brain barrier in neurodegeneration - Nature Reviews Neurology (2022) - DOI:10.1038/s41582-022-00645-6
- Wnt/Fzd4 signaling in vascular development - Developmental Cell (2021) - DOI:10.1016/j.devcel.2021.03.025
- FZD4 mutations in familial exudative vitreoretinopathy - Human Molecular Genetics (2020) - DOI:10.1093/hmg/ddz289
FZD4 interacts with:
- WNT1, WNT3, WNT3A, WNT5A: Wnt ligands
- LRP5, LRP6: Co-receptors
- DVL1, DVL2, DVL3: Dishevelled proteins
- NDP: Norrie disease protein (co-ligand)
- TSPAN12: Tetraspanin co-receptor
FZD4-based therapies for:
- Stroke neuroprotection
- BBB repair in neurodegeneration
- Retinal vascular diseases
The study of Fzd4 Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
- Daneman R, et al. "Wnt/β-catenin signaling in blood-brain barrier formation." Neuron. 2022;110(12):1898-1910. PMID:35476921
- Ye X, et al. "Frizzled-4 in development and disease." Development. 2021;148(12):dev199456. PMID:34293102
- Nikopoulos K, et al. "FZD4 mutation spectrum in FEVR." Investigative Ophthalmology & Visual Science. 2020;61(4):36. PMID:32330278