Platelet-Derived Growth Factor (PDGF)
Quick Facts
| Feature | Information |
|---|---|
| Full Name | Platelet-Derived Growth Factor |
| Abbreviation | PDGF |
| Molecule Type | Recombinant Growth Factor |
| Family | PDGF Family |
| Molecular Weight | ~24-35 kDa (Dimer, isoform dependent) |
| Major Isoforms | PDGF-AA, PDGF-AB, PDGF-BB, PDGF-CC, PDGF-DD |
| Primary Receptors | PDGFR-α and PDGFR-β |
| Typical Working Concentration | 5-50 ng/mL |
| Common Stock Concentration | 10-100 μg/mL |
Overview
Platelet-Derived Growth Factor (PDGF) is a potent mitogenic growth factor that regulates cell proliferation, migration, survival, and extracellular matrix production. Initially identified in platelets, PDGF is now known to play essential roles in embryonic development, tissue repair, angiogenesis, and wound healing.
In cell culture, PDGF is widely used to stimulate the growth of mesenchymal cells, fibroblasts, smooth muscle cells, pericytes, and selected stem cell populations. It is also an important component of regenerative medicine and tissue engineering protocols.
Biological Function
PDGF regulates multiple cellular processes, including:
- Promotes cell proliferation
- Stimulates cell migration
- Enhances cell survival
- Supports wound healing
- Regulates extracellular matrix production
- Promotes angiogenesis through pericyte recruitment
- Supports tissue regeneration
Mechanism of Action
PDGF binds to PDGFR-α and PDGFR-β, receptor tyrosine kinases expressed on responsive cells.
Ligand binding induces receptor dimerization and autophosphorylation, activating several intracellular signaling pathways, including:
- PI3K-AKT pathway
- MAPK/ERK pathway
- PLCγ pathway
- STAT pathway
These signaling cascades regulate proliferation, migration, survival, and matrix remodeling.
Common Applications
PDGF is widely used for:
- Mesenchymal stem cell culture
- Fibroblast culture
- Smooth muscle cell culture
- Pericyte culture
- Tissue engineering
- Wound healing studies
- Angiogenesis research
- Regenerative medicine
- Cancer biology
Cell Types Commonly Supplemented with PDGF
| Cell Type | Typical Application |
|---|---|
| Mesenchymal Stem Cells (MSCs) | Expansion |
| Fibroblasts | Proliferation |
| Vascular Smooth Muscle Cells | Maintenance |
| Pericytes | Growth and survival |
| Neural Progenitor Cells | Selected differentiation protocols |
| Oligodendrocyte Precursor Cells (OPCs) | Expansion |
| Human iPSCs | Mesodermal differentiation |
| Connective Tissue Cells | Regeneration studies |
PDGF isoform selection depends on the target cell type, with PDGF-BB being the most commonly used recombinant form in cell culture.
Typical Working Concentrations
| Application | Typical Concentration |
|---|---|
| Mesenchymal Stem Cells | 5-20 ng/mL |
| Fibroblast Culture | 10-20 ng/mL |
| Oligodendrocyte Precursors | 10-20 ng/mL |
| Tissue Engineering | 20-50 ng/mL |
Advantages
- Potent mitogenic factor for mesenchymal cells
- Promotes migration and tissue repair
- Supports stem cell expansion
- Well-characterized signaling pathways
- Widely used in regenerative medicine
- Available in multiple recombinant isoforms
Limitations
- Activity depends on PDGFR expression
- Different isoforms have distinct biological activities
- Sensitive to repeated freeze-thaw cycles
- Relatively expensive
- Often requires combination with additional growth factors
Related Growth Factors
Frequently combined with:
- Fibroblast Growth Factor 2 (FGF-2)
- Vascular Endothelial Growth Factor (VEGF)
- Epidermal Growth Factor (EGF)
- Hepatocyte Growth Factor (HGF)
- Transforming Growth Factor-β (TGF-β)
- Insulin-like Growth Factor 1 (IGF-1)
See Also
- Growth Factor Handling and Storage Guide
- Mesenchymal Stem Cell Culture
- Fibroblast Culture
- Tissue Engineering
- Angiogenesis
- PDGF Signaling
Key Takeaways
- PDGF is a multifunctional growth factor that regulates proliferation, migration, survival, and tissue repair.
- It signals through PDGFR-α and PDGFR-β, activating PI3K-AKT, MAPK/ERK, PLCγ, and STAT signaling pathways.
- PDGF-BB is the most widely used isoform for mammalian cell culture.
- PDGF is commonly used for mesenchymal stem cells, fibroblasts, smooth muscle cells, pericytes, and oligodendrocyte precursor cells.
- Typical working concentrations range from 5-50 ng/mL, depending on the cell type and application.
References
- Heldin CH, Westermark B. Physiological Reviews (1999).
- Andrae J, Gallini R, Betsholtz C. Genes & Development (2008).
- Freshney RI. Culture of Animal Cells: A Manual of Basic Technique and Specialized Applications.
- Thermo Fisher Scientific. Recombinant Human PDGF Product Information.
- PeproTech. Recombinant Human PDGF-BB Product Datasheet.