BMPR2 (Bone Morphogenetic Protein Receptor Type 2) is a constitutively active type II serine/threonine kinase receptor that transduces Bone Morphogenetic Protein (BMP) signals in partnership with type I receptors (BMPR1A/ALK3 or BMPR1B/ALK6)[1]. BMPR2 is essential for embryonic development, skeletal formation, cardiovascular function, and has increasingly recognized roles in neural development and neurodegeneration[2].
| BMPR2 Protein | |
|---|---|
| Protein Symbol | BMPR2 |
| Full Name | Bone Morphogenetic Protein Receptor Type 2 |
| NCBI Gene ID | 659 |
| UniProt ID | Q13873 |
| Protein Length | 1038 amino acids |
| Protein Class | Type II serine/threonine kinase receptor |
| Associated Diseases | [Pulmonary Arterial Hypertension](/diseases/pulmonary-arterial-hypertension), [Alzheimer's Disease](/diseases/alzheimers-disease), [Parkinson's Disease](/diseases/parkinsons-disease), [Multiple Sclerosis](/diseases/multiple-sclerosis) |
BMPR2 exhibits a characteristic type II receptor topology:
Upon BMP ligand binding to the extracellular domain, BMPR2 phosphorylates type I receptors, which then phosphorylate SMAD1/5/8. These form complexes with SMAD4 and translocate to the nucleus to regulate gene transcription[3].
BMPR2 also activates:
BMPR2 is widely expressed in the nervous system:
| Brain Region | Expression Level |
|---|---|
| Cerebral Cortex | High |
| Hippocampus | High |
| Basal Ganglia | Moderate-High |
| Cerebellum | Moderate |
| Brainstem | Moderate |
| Spinal Cord | Moderate |
BMPR2 signaling promotes neural stem cell proliferation and differentiation into neurons[5]. BMP signaling through BMPR2:
BMPR2 participates in establishing neural circuits through:
BMPR2 critically influences glial cell development:
BMPR2 dysfunction contributes to AD pathogenesis through multiple mechanisms[6]:
In PD models, BMPR2 signaling is altered in dopaminergic neurons[2:1]:
BMPR2 plays roles in demyelination and remyelination[@k你自己2022]:
BMPR2 is involved in post-ischemic recovery[7]:
Most pathogenic BMPR2 mutations cause loss-of-function:
BMPR2 deficiency leads to:
Small molecules that enhance BMPR2 signaling:
Viral vector delivery of functional BMPR2[8]:
Yan et al. BMPR2 signaling in neuronal survival and neurogenesis. Cell Mol Neurobiol. 2019. ↩︎ ↩︎
Gomez et al. BMP-SMAD signaling in Parkinson's disease. Neurobiol Dis. 2018. ↩︎ ↩︎
Song et al. BMP signaling in astrocyte function and neuroinflammation. Glia. 2015. ↩︎ ↩︎
Ebina et al. BMPR2 expression in oligodendrocyte precursor cells. J Neurochem. 2007. ↩︎ ↩︎
Choi et al. BMP signaling in neural stem cell differentiation. Stem Cells. 2010. ↩︎
Leggett et al. BMPR2 and tau pathology in Alzheimer's disease models. Acta Neuropathol Commun. 2020. ↩︎
Mitchell et al. BMPR2 in cerebral ischemia and stroke recovery. Stroke. 2018. ↩︎
Thompson et al. BMPR2 gene therapy approaches for neuroprotection. Mol Ther. 2020. ↩︎