BMP4 Gene (Bone Morphogenetic Protein 4)

BMP4 Gene (Bone Morphogenetic Protein 4)

Overview

<div class="infobox infobox-gene">
<h3>BMP4</h3>
<table>
<tr><th>Symbol</th><td>BMP4</td></tr>
<tr><th>Full Name</th><td>Bone Morphogenetic Protein 4</td></tr>
<tr><th>Chromosomal Location</th><td>14q22.2</td></tr>
<tr><th>NCBI Gene ID</th><td>[652](https://www.ncbi.nlm.nih.gov/gene/652)</td></tr>
<tr><th>OMIM</th><td>[112262](https://www.omim.org/entry/112262)</td></tr>
<tr><th>Ensembl ID</th><td>[ENSG00000109475](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000109475)</td></tr>
<tr><th>UniProt</th><td>[P12644](https://www.uniprot.org/uniprot/P12644)</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/cancer" style="color:#ef9a9a">Cancer</a>, <a href="/wiki/carcinoma" style="color:#ef9a9a">Carcinoma</a>, <a href="/wiki/ms" style="color:#ef9a9a">Ms</a>, <a href="/wiki/tumor" style="color:#ef9a9a">Tumor</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">22 edges</a></td>
</tr>
</table>
</div>

BMP4 (Bone Morphogenetic Protein 4) encodes a member of the [TGF-beta superfamily](/mechanisms/tgf-beta-signaling) of signaling molecules. BMP4 is a multifunctional growth factor critical for embryonic development, tissue patterning, and cell fate determination. In the nervous system, BMP4 regulates neural stem cell proliferation, differentiation, astrogenesis, synaptic formation, and plasticity[@charytoniuk2002].

BMP4 Gene (Bone Morphogenetic Protein 4)

Overview

<div class="infobox infobox-gene">
<h3>BMP4</h3>
<table>
<tr><th>Symbol</th><td>BMP4</td></tr>
<tr><th>Full Name</th><td>Bone Morphogenetic Protein 4</td></tr>
<tr><th>Chromosomal Location</th><td>14q22.2</td></tr>
<tr><th>NCBI Gene ID</th><td>[652](https://www.ncbi.nlm.nih.gov/gene/652)</td></tr>
<tr><th>OMIM</th><td>[112262](https://www.omim.org/entry/112262)</td></tr>
<tr><th>Ensembl ID</th><td>[ENSG00000109475](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000109475)</td></tr>
<tr><th>UniProt</th><td>[P12644](https://www.uniprot.org/uniprot/P12644)</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/cancer" style="color:#ef9a9a">Cancer</a>, <a href="/wiki/carcinoma" style="color:#ef9a9a">Carcinoma</a>, <a href="/wiki/ms" style="color:#ef9a9a">Ms</a>, <a href="/wiki/tumor" style="color:#ef9a9a">Tumor</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">22 edges</a></td>
</tr>
</table>
</div>

BMP4 (Bone Morphogenetic Protein 4) encodes a member of the [TGF-beta superfamily](/mechanisms/tgf-beta-signaling) of signaling molecules. BMP4 is a multifunctional growth factor critical for embryonic development, tissue patterning, and cell fate determination. In the nervous system, BMP4 regulates neural stem cell proliferation, differentiation, astrogenesis, synaptic formation, and plasticity[@charytoniuk2002].

Dysregulated BMP4 signaling has been implicated in [Alzheimer's Disease](/diseases/alzheimers-disease), [Parkinson's Disease](/diseases/parkinsons-disease), and [autism spectrum disorder](/diseases/autism-spectrum-disorder), making it an important protein for understanding developmental and degenerative processes in the brain.

Protein Structure and Function

TGF-beta Superfamily Architecture

BMP4 is synthesized as a precursor protein that undergoes:

• Signal peptide cleavage: N-terminal targeting sequence removed
• Prodomain removal: Cleavage to generate active mature protein
• Dimer formation: Active form is a homodimer (or heterodimer with BMP2)

• Conserved cysteine knot structure
• Forms disulfide-linked homodimers
• Binds to type I and type II receptor serine/threonine kinases

Receptor Interactions

BMP4 signals through a characteristic receptor complex:

Type I Receptors (Alk3/BMPR1A, Alk6/BMPR1B):

• Transduce signals intracellularly
• Phosphorylate SMAD1/5/8
• Determine cell-type specificity

• Constitutively active kinase
• Phosphorylates type I receptors
• Required for signal transmission

Signaling Pathways

BMP4 activates multiple signaling pathways:

• BMP4 → Type II receptor → Type I receptor
• Phosphorylates SMAD1/5/8
• Forms complexes with SMAD4
• Translocates to nucleus to regulate gene expression

• Activates ERK, JNK, and p38 pathways
• Provides non-SMAD signaling
• Modulates cell survival, differentiation

• Can activate AKT signaling
• Affects cell survival and metabolism

Role in Neural Development

Neural Stem Cell Regulation

BMP4 is a critical regulator of neural stem cells (NSCs)[@gong2015]:

Proliferation:

• BMP4 can promote NSC proliferation
• Concentration-dependent effects
• Interaction with other growth factors

• Promotes astrogenesis (glial differentiation)
• Inhibits neurogenesis (neuronal differentiation) in many contexts
• Balances neuronal and glial fate

• Maintains NSC pools
• Prevents premature differentiation

Neurogenesis and Gliogenesis

BMP4 has context-dependent effects:

During Development:

• High BMP4 favors astrocyte specification
• Inhibits neuronal differentiation
• Essential for cortical patterning

• BMP4 continues to regulate hippocampal neurogenesis
• Affects subventricular zone neural stem cells
• Balances maintenance and differentiation

Synaptic Development

BMP4 influences synapse formation and function[@huang2019]:

Presynaptic Development:

• Promotes presynaptic differentiation
• Regulates neurotransmitter release

• Affects postsynaptic density formation
• Modulates receptor clustering

• Involved in activity-dependent plasticity
• May affect learning and memory

Role in Neurodegeneration

Alzheimer's Disease

BMP4 has several connections to [Alzheimer's Disease](/diseases/alzheimers-disease)[@chen2016]:

Expression Changes:

• BMP4 expression is altered in AD brains
• Both up- and downregulation reported depending on disease stage
• May serve as a biomarker

• BMP4 signaling can influence APP processing
• May affect amyloid-beta production
• Complex, context-dependent interactions

• BMP4 can protect neurons from amyloid toxicity
• Promotes neuronal survival
• May have therapeutic potential

• BMP4 modulates glial activation
• Affects neuroinflammation in AD
• Can be both pro- and anti-inflammatory

Parkinson's Disease

BMP4 has important roles in [Parkinson's Disease](/diseases/parkinsons-disease)[@costamagna2019]:

Dopaminergic Neuron Development:

• BMP4 is essential for dopaminergic neuron specification
• During embryogenesis, BMP4 helps establish the midbrain dopaminergic lineage
• Regulates genes critical for dopamine synthesis (TH, AADC)

• BMP4 can protect dopaminergic neurons
• May counteract neurodegenerative processes
• Therapeutic potential for PD

• BMP4 expression in the substantia nigra
• Altered expression in PD models
• May affect neuronal vulnerability

Autism Spectrum Disorder

BMP4 has been implicated in [autism spectrum disorder](/diseases/autism-spectrum-disorder):

Brain Development:

• BMP4 is essential for cortical development
• Altered connectivity in ASD may involve BMP4 dysregulation
• Synaptogenesis affected by BMP4

• BMP4 regulates synapse formation
• Altered synaptic plasticity in ASD
• Possible therapeutic target

Expression Patterns

Tissue Distribution

BMP4 is widely expressed:

• Embryonic tissues: High expression during development
• Adult brain: Hippocampus, cortex, subventricular zone
• Bone and cartilage: Original discovery context
• Lung, kidney, liver: Lower expression

Brain Region Expression

In the brain:

• Hippocampus: Dentate gyrus, CA regions
• Cortex: All layers, particularly layer 5
• Subventricular zone: Neural stem cell niche
• Substantia nigra: Dopaminergic neurons
• Cerebellum: Purkinje cells

Cellular Localization

BMP4 is expressed in:

• Neurons: Both excitatory and inhibitory
• Astrocytes: Astrocytic expression
• Neural stem cells: In niches
• Endothelial cells: Vascular expression

Therapeutic Implications

Potential Therapeutic Approaches

• Recombinant BMP4 protein
• Small molecule activators
• Gene therapy approaches

• Noggin, Chordin, Follistatin
• Used when BMP4 is overexpressed

• BMP4-expressing neural stem cells
• Combined approaches with other factors

• BMP4 as a diagnostic marker
• Monitoring disease progression
• Treatment response indicator

Clinical Considerations

• BMP4 has been used clinically in bone healing (Infuse)
• CNS delivery challenges
• Dose and timing critical for effects
• Combination therapies may be needed

Key Research Findings

2018-2024 Research Highlights

Related Pathways

Cross-Links to Related Pages

• [TGF-beta signaling](/mechanisms/tgf-beta-signaling)
• [BMP signaling](/mechanisms/bmp-signaling)
• [Neural stem cells](/mechanisms/neural-stem-cells)
• [Neurogenesis](/mechanisms/neurogenesis)
• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• [Autism Spectrum Disorder](/diseases/autism-spectrum-disorder)
• [Dopaminergic neurons](/entities/dopaminergic-neurons)
• [Synaptic plasticity](/mechanisms/synaptic-plasticity)
• [SMAD proteins](/proteins/smad-proteins)

References

External Links

• [NCBI Gene: 652](https://www.ncbi.nlm.nih.gov/gene/652)
• [OMIM: 112262](https://www.omim.org/entry/112262)
• [Ensembl: ENSG00000109475](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000109475)
• [UniProt: P12644](https://www.uniprot.org/uniprot/P12644)
• [GeneCards: BMP4](https://www.genecards.org/cgi-bin/carddisp.pl?gene=BMP4)

Pathway Diagram

The following diagram shows the key molecular relationships involving BMP4 Gene (Bone Morphogenetic Protein 4) discovered through SciDEX knowledge graph analysis: