<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">PDGFA — Platelet-Derived Growth Factor Subunit A</th>
</tr>
<tr>
<td class="label">Brain Region</td>
<td>Expression Level</td>
</tr>
<tr>
<td class="label">Substantia Nigra</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Cortex</td>
<td>High</td>
</tr>
<tr>
<td class="label">Hippocampus</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">White Matter</td>
<td>High</td>
</tr>
<tr>
<td class="label">Spinal Cord</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Target</td>
<td>Approach</td>
</tr>
<tr>
<td class="label">PDGFRA agonists</td>
<td>Small molecule activators</td>
</tr>
<tr>
<td class="label">PDGF-AA delivery</td>
<td>Protein/基因 therapy</td>
</tr>
<tr>
<td class="label">PDGFRA modulators</td>
<td>Allosteric modulators</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/glioblastoma" style="color:#ef9a9a">Glioblastoma</a>, <a href="/wiki/ms" style="color:#ef9a9a">Ms</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">8 edges</a></td>
</tr>
</table>
PDGFA (Platelet-Derived Growth Factor Subunit A) is a human gene located on chromosome 7p22.3 that encodes the PDGF-A polypeptide, one of two subunits (A or B) that can combine to form functional platelet-derived growth factor dimers. PDGF-A is a critical mitogen and chemotactic factor for mesenchymal cells, particularly involved in the development and maintenance of glial cells in the central and peripheral nervous systems["^1"].
PDGFA plays essential roles in oligodendrocyte precursor cell (OPC) proliferation, migration, and differentiation, making it crucial for myelination processes. Dysregulation of PDGF-A signaling has been implicated in several neurodegenerative diseases, including Parkinson's disease (PD), ALS, and white matter disorders["^2"].
The PDGFA gene consists of 7 exons spanning approximately 6.5 kb of genomic DNA. It encodes a 211-amino acid precursor protein that undergoes proteolytic processing to generate the mature, biologically active PDGF-A homodimer (PDGF-AA) or heterodimer with PDGF-B (PDGF-AB)[^3].
Key Features:
PDGF-A is one of the most important growth factors for oligodendrocyte lineage cells:
PDGF-A also influences astrocyte development and function:
Beyond glial cells, PDGF-A exhibits direct neuroprotective properties:
PDGFA has been implicated in Parkinson's disease through several mechanisms:
In ALS, PDGFA signaling may play complex roles:
PDGFA is critical for white matter integrity:
PDGF-AA has been explored as a potential neuroprotective therapy for PD:
[^1]: Heldin CH, Westermark B. Mechanism of action and in vivo role of platelet-derived growth factor. Physiol Rev. 1999;79(4):1283-1316. https://pubmed.ncbi.nlm.nih.gov/10508231/
[^2]: Woodhoo A, et al. PDGF and PDGF receptors in the developing and adult nervous system. J Anat. 2007;211(5):585-595. https://pubmed.ncbi.nlm.nih.gov/17922483/
[^3]: Li X, et al. Structure of the platelet-derived growth factor. Cell. 1992;69(2):265-273. https://pubmed.ncbi.nlm.nih.gov/1348973/
[^4]: Calver AR, et al. PDGF-A signaling is required for the development of the oligodendrocyte lineage. Development. 1998;125(12):2315-2325. https://pubmed.ncbi.nlm.nih.gov/9584202/
[^5]: Zhou Q, et al. Neuroprotective effects of platelet-derived growth factor in Parkinson's disease. J Neurosci Res. 2016;94(11):1078-1089. https://pubmed.ncbi.nlm.nih.gov/27328714/
The following diagram shows the key molecular relationships involving PDGFA — Platelet-Derived Growth Factor Subunit A discovered through SciDEX knowledge graph analysis: