P-15 Peptide Evidence Guide
P-15 Peptide (Puros) has Phase 2 data supporting its use as a bone graft substitute scaffold in dental and spinal surgery, with reasonable evidence for bone regeneration when used as a collagen/P-15 composite. It is a niche compound with a specific surgical application rather than a broadly applicable healing peptide. Within its bone regeneration niche, the Phase 2 data is credible.
Our Take
P-15 Peptide (Puros) has Phase 2 data supporting its use as a bone graft substitute scaffold in dental and spinal surgery, with reasonable evidence for bone regeneration when used as a collagen/P-15 composite. It is a niche compound with a specific surgical application rather than a broadly applicable healing peptide. Within its bone regeneration niche, the Phase 2 data is credible.
- Best for
- Bone graft substitute, dental bone regeneration, spinal fusion support
- Evidence grade
- Level C
- Confidence
- Moderate
- Starting point
- Surgical implant product (Puros Demineralized Bone Matrix with P-15) - not a standalone peptide protocol
Benefits and Evidence
- Spinal Fusion: Level C, includes human evidence - Clinical studies demonstrate comparable fusion rates to autograft in single-level anterior cervical discectomy and fusion (ACDF), with reduced donor site morbidity.
- Dental Bone Regeneration: Level C, includes human evidence - Clinical trials in periodontal defects and dental implant site preparation show enhanced bone fill and quality compared to ABM alone.
- Long Bone Defect Repair: Level D, mostly non-human evidence - Animal studies demonstrate enhanced bone formation in critical-size defect models when P-15 coated scaffolds are used compared to uncoated controls.
Side Effects and Warnings
- Local swelling at surgical site
- Potential allergic reaction to bovine-derived components
- Infection risk inherent to surgical procedures
- Rare graft migration
- For surgical use only by trained practitioners
- Contains bovine-derived material; contraindicated in patients with bovine protein allergy
- Not a substitute for mechanical stabilization in spinal fusion
- Efficacy depends on proper surgical technique and patient healing capacity
Research Dosage References
- <strong>Surgical implant</strong> - Applied to bone graft substitute - Single application during surgery - P-15 is adsorbed onto anorganic bovine bone mineral (ABM) particles. The ABM/P-15 composite is packed into the bone defect during surgery.
Mechanism of Action
P-15 promotes bone regeneration through: 1. Integrin-mediated cell attachment: Binds alpha-2-beta-1 integrins on osteoblast surfaces, mimicking the cell-attachment domain of native type I collagen. 2. Osteoblast activation: Triggers intracellular signaling cascades (FAK/MAPK pathway) upon cell attachment, promoting osteoblast differentiation and matrix synthesis. 3. Growth factor sequestration: The ABM/P-15 scaffold adsorbs endogenous growth factors (BMPs, PDGF), concentrating them at the bone defect site. 4. Osteoconductive scaffolding: Anorganic bone mineral provides structural support and calcium/phosphate source for new bone mineralization.
Legal Status
ABM/P-15 (i-FACTOR) received FDA 510(k) clearance for use in spinal fusion. PepGen P-15 has been used in dental applications. Available as a medical device/bone graft substitute. Requires surgical application by licensed practitioners.
Primary Sources
- A synthetic peptide (P-15) enhances cell attachment and bone formation in vitro. J Biomed Mater Res, 1999.
- Clinical evaluation of ABM/P-15 in anterior cervical fusion: i-FACTOR trial. J Neurosurg Spine, 2016.
- P-15 peptide-coated bone graft in periodontal defects: a clinical study. J Periodontol, 2002.