P11-4 vs DPDPE
Head-to-head comparison of P11-4 (Self-assembling peptide P11-4 (Ac-QQRFEWEFEQQ-NH2)) and DPDPE ([D-Pen2, D-Pen5]-enkephalin) — benefits, dosing, side effects, research data, and where to buy.
| Property | P11-4 | DPDPE |
|---|---|---|
| Category | Dental & Oral | Pain Management |
| Full Name | Self-assembling peptide P11-4 (Ac-QQRFEWEFEQQ-NH2) | [D-Pen2, D-Pen5]-enkephalin |
| Molecular Weight | 1466 Da | 645.79 Da |
| Half-Life | local activity for hours; peptide degraded over time | 15-60 minutes in plasma |
| Amino Acids | 11 | 5 |
| Typical Dose | 0.5-5 mg per lesion | 0.01-1 ug per animal |
| Route | Topical/Intraoral | Intrathecal / intracerebroventricular |
| Purity | ≥98% | ≥98% |
| Studies Count | 40 | 800 |
| Research Status | Clinical | Pre-clinical |
P11-4 Benefits
- ✓enamel remineralization
- ✓early caries arrest
- ✓biomimetic scaffold formation
- ✓minimally invasive repair
DPDPE Benefits
- ✓delta-opioid selectivity
- ✓improved conformational stability
- ✓analgesic receptor mapping
- ✓useful in chronic pain models
P11-4 Dosing
topical application to cleaned lesion|single-visit in-office application|repeat at follow-up if indicated
DPDPE Dosing
Intrathecal 0.01-1 ug per animal|Intracerebroventricular 0.01-0.5 ug per animal|In vitro 0.1-20 nM
P11-4 Side Effects
- ⚠transient tooth sensitivity
- ⚠local irritation
- ⚠taste disturbance
DPDPE Side Effects
- ⚠sedation
- ⚠nausea-like opioid effects
- ⚠tolerance with repeated dosing
Research Overview
P11-4
P11-4 has been studied for its ability to penetrate initial carious lesions and self-assemble into a fibrillar matrix that nucleates hydroxyapatite. Human and preclinical studies support its role in non-invasive enamel repair.
DPDPE
DPDPE is widely cited in opioid pharmacology because it helped establish the functional role of delta-opioid receptors in pain control. Its constrained structure is also used to explore how peptide cyclization changes potency, stability, and tissue selectivity.
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