MMP9 Gene

MMP9 Gene

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">MMP9 Gene</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>MMP9</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Matrix Metallopeptidase 9</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>20q13.12</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>4313</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>120361</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000100985</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>P14780</td>
</tr>
<tr>
<td class="label">Approach</td>
<td>Status</td>
</tr>
<tr>
<td class="label">Broad-spectrum MMP inhibitors</td>
<td>Discontinued</td>
</tr>
<tr>
<td class="label">Selective MMP9 inhibitors</td>
<td>Research</td>
</tr>
<tr>
<td class="label">Antibody therapy</td>
<td>Preclinical</td>
</tr>
<tr>
<td class="label">Natural inhibitors</td>
<td>Research</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/ali" style="color:#ef9a9a">ALI</a>, <a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/alzheimer" style="color:#ef9a9a">ALZHEIMER</a>, <a href="/wiki/alzheimer's-disease" style="color:#ef9a9a">ALZHEIMER'S DISEASE</a>, <a href="/wiki/ami" style="color:#ef9a9a">AMI</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1092 edges</

MMP9 Gene

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">MMP9 Gene</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>MMP9</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Matrix Metallopeptidase 9</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>20q13.12</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>4313</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>120361</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000100985</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>P14780</td>
</tr>
<tr>
<td class="label">Approach</td>
<td>Status</td>
</tr>
<tr>
<td class="label">Broad-spectrum MMP inhibitors</td>
<td>Discontinued</td>
</tr>
<tr>
<td class="label">Selective MMP9 inhibitors</td>
<td>Research</td>
</tr>
<tr>
<td class="label">Antibody therapy</td>
<td>Preclinical</td>
</tr>
<tr>
<td class="label">Natural inhibitors</td>
<td>Research</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/ali" style="color:#ef9a9a">ALI</a>, <a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/alzheimer" style="color:#ef9a9a">ALZHEIMER</a>, <a href="/wiki/alzheimer's-disease" style="color:#ef9a9a">ALZHEIMER'S DISEASE</a>, <a href="/wiki/ami" style="color:#ef9a9a">AMI</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1092 edges</a></td>
</tr>
</table>

Pathway Diagram

Overview

Mmp9 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Introduction

Mmp9 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. [@supsup2009]

The MMP9 gene (Matrix Metallopeptidase 9) encodes gelatinase B, a zinc-dependent protease that degrades extracellular matrix proteins. MMP9 is involved in neuroinflammation and blood-brain barrier disruption in neurodegenerative diseases. [@supsup2006]

Gene Overview

Normal Function

MMP9 (gelatinase B) is a key matrix metalloproteinase:

• Extracellular matrix remodeling: Degrades gelatin, collagen IV, and other ECM components
• Cell migration: Facilitates immune cell migration across barriers
• Cytokine activation: Activates pro-inflammatory cytokines
• Neurodevelopment: Important for synaptic plasticity

Brain Expression

MMP9 is expressed in:

• [Microglia](/entities/microglia) (strongly induced)
• [Astrocytes](/entities/astrocytes)
• [Neurons](/entities/neurons) (lower levels)
• Endothelial cells

Disease Associations

Alzheimer's Disease

• Elevated MMP9 in AD brains and CSF
• Contributes to blood-brain barrier disruption
• Degrades [Aβ](/proteins/amyloid-beta) but may generate toxic fragments
• Therapeutic target: MMP9 inhibitors

Parkinson's Disease

• MMP9 elevated in substantia nigra
• Contributes to neuroinflammation
• Affects dopaminergic neuron survival

Stroke/Ischemia

• Strongly upregulated after stroke
• Contributes to blood-brain barrier breakdown
• Therapeutic target for neuroprotection

Multiple Sclerosis

• Involved in demyelination
• Affects immune cell infiltration

Key Publications

• Brkic M, et al. (2015). Matrix metalloproteinases in neurodegeneration. Progress in Neurobiology. PMID: 25481062(https://pubmed.ncbi.nlm.nih.gov/25481062/)
• Rivera S, et al. (2010). MMP9 in brain injury and neurodegeneration. Neurochemistry International. PMID: 19944755(https://pubmed.ncbi.nlm.nih.gov/19944755/)
• Yang J, et al. (2019). MMP9 in Alzheimer's disease. Journal of Alzheimer's Disease. PMID: 31108233(https://pubmed.ncbi.nlm.nih.gov/31108233/)

Expression Pattern

MMP9 (Matrix Metalloproteinase-9, also known as gelatinase B) is expressed in various cell types in the central nervous system:

• Neurons: Especially in hippocampal and cortical neurons
• Astrocytes: Upregulated in reactive astrocytes
• [Microglia](/cell-types/microglia-neuroinflammation): Activated microglia in neurodegenerative conditions
• Endothelial Cells: [Blood-brain barrier](/entities/blood-brain-barrier) components

Therapeutic Approaches

MMP9 is a challenging therapeutic target due to its dual roles in normal physiology and disease:

Overview

Mmp9 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Background

The study of Mmp9 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.

See Also

• [MMP9 Protein](/proteins/mmp9-protein)
• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• [Neuroinflammation Pathway](/mechanisms/neuroinflammation-pathway)
• [Blood-Brain Barrier](/entities/blood-brain-barrier)

External Links

• [NCBI Gene: MMP9](https://www.ncbi.nlm.nih.gov/gene/4313)
• [UniProt: MMP9](https://www.uniprot.org/uniprot/P14780)
• [GeneCards: MMP9](https://www.genecards.org/cgi-bin/carddisp.pl?gene=MMP9)

References

Related Hypotheses

From the [SciDEX Exchange](/exchange) — scored by multi-agent debate

• [SASP-Mediated Cholinergic Synapse Disruption](/hypothesis/h-1acdd55e) — <span style="color:#ffd54f;font-weight:600">0.56</span> · Target: MMP2/MMP9

Pathway Diagram

The following diagram shows the key molecular relationships involving MMP9 Gene discovered through SciDEX knowledge graph analysis: