[^1]
[^2]
[^3]
[^4]
[^5]
[^6]
| TGFBR2 |
|---|
| Gene Symbol | TGFBR2 |
| Full Name | Transforming Growth Factor Beta Receptor 2 |
| Aliases | TBR-II, TGF-βR2 |
| Chromosomal Location | 3p22.1 |
| Gene Type | Protein coding |
| NCBI Gene ID | [7048](https://www.ncbi.nlm.nih.gov/gene/7048) |
| OMIM | [190182](https://omim.org/entry/190182) |
| Ensembl ID | ENSG00000163513 |
| UniProt ID | [P37173](https://www.uniprot.org/uniprot/P37173) |
| Associated Diseases | [Alzheimer's disease](/diseases/alzheimer's-disease), [Parkinson's disease](/diseases/parkinson's-disease), [ALS](/diseases/ALS), [Marfan syndrome](/diseases/marfan-syndrome), [Loeys-Dietz syndrome](/diseases/loeys-dietz-syndrome) |
TGFBR2 (Transforming Growth Factor Beta Receptor 2) encodes the type II TGF-β receptor, a transmembrane serine/threonine kinase that is essential for TGF-β signaling. TGFBR2 is the primary receptor that binds TGF-β ligands and then recruits and phosphorylates TGFBR1 (type I receptor) to initiate downstream signaling.
TGF-β signaling through TGFBR2:
- Ligand binding: TGF-β (TGF-β1, TGF-β2, TGF-β3) binds to TGFBR2
- Complex formation: TGFBR2 recruits TGFBR1 into a complex
- Transphosphorylation: TGFBR2 phosphorylates TGFBR1
- SMAD activation: Activated TGFBR1 phosphorylates SMAD2/SMAD3
- Nuclear translocation: SMAD2/3-SMAD4 complex enters nucleus
- Gene regulation: Controls transcription of target genes
In the central nervous system, TGFBR2-mediated signaling is crucial for:
- Neuronal survival: Anti-apoptotic signaling through multiple pathways
- Neuroinflammation: Suppression of microglial activation
- Synaptic plasticity: Regulation of dendritic spine formation
- Astrocyte function: Modulation of astrocytic responses
- Oligodendrocyte maturation: Promotes myelination
- Blood-brain barrier: Maintains integrity
TGFBR2 also activates:
- PI3K/Akt: Pro-survival signaling
- MAPK/ERK: Cell proliferation and differentiation
- Rho GTPases: Cytoskeletal regulation
TGF-β/TGFBR2 signaling in AD:
- Neuroprotection: Reduced signaling correlates with pathology
- Amyloid clearance: TGF-β promotes microglial Aβ clearance
- Synaptic function: Protects against synaptic loss
- Therapeutic potential: TGF-β agonists under investigation
- Dopaminergic neuron survival: TGFBR2 protects against toxicity
- Neuroinflammation: Suppresses microglial activation
- Mitochondrial function: Modulates mitophagy
- Therapeutic target: Gene therapy approaches
- Motor neuron degeneration: Altered TGF-β signaling
- Glial responses: Affects astrocyte and microglia function
- Disease progression: Biomarker potential
- Marfan syndrome: TGF-β dysregulation contributes to phenotype
- Loeys-Dietz syndrome: TGFBR2 mutations cause the condition
- Cancer: Dual role as tumor suppressor and promoter
TGFBR2 is widely expressed in the brain:
| Cell Type |
Expression Level |
| Neurons |
High |
| Astrocytes |
High |
| Microglia |
Moderate |
| Oligodendrocytes |
Moderate |
| Endothelial cells |
High (BBB) |
Expression is dynamically regulated during development and disease.
- TGF-β agonists: Neuroprotective strategies
- TGFBR2 modulators: Receptor-targeted approaches
- Gene therapy: Viral vector delivery to brain
- CSF TGF-β levels correlate with disease
- TGFBR2 expression as therapeutic indicator
- TGF-β modulation in neurodegeneration
- Gene therapy approaches for TGFBR2 delivery