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Osteogenic Growth Peptide (OGP)
A 14-aa C-terminal histone H4 fragment circulating naturally in serum; the active short fragment OGP(10-14) (Tyr-Gly-Phe-Gly-Gly) stimulates osteoblast proliferation and bone formation in rodents a…
Aliases (5)
Overview
What is Osteogenic Growth Peptide (OGP)?
Osteogenic Growth Peptide (OGP) is a 14-amino-acid peptide identical to the C-terminal sequence of histone H4, identified as a regulator of bone formation and hematopoiesis. The active fragment OGP(10-14) retains most biological activity.
Key Benefits
Investigated for bone fracture healing, osteoporosis, and stimulation of bone regeneration. Also reported to enhance hematopoietic stem cell proliferation and improve recovery after marrow injury or chemotherapy.
Mechanism of Action
Binds OGP-binding proteins on osteoblast and stromal cell surfaces, activating Gi/MAPK signaling cascades that drive osteoblast proliferation and differentiation. Also stimulates RANKL-independent bone formation pathways.
Pharmacokinetics
Peptide Interactions
G-CSF (hematopoietic synergy), BMPs (additive osteogenic)
BPC-157, TB-500 for "complete recovery stack" — no rigorous data
What to Expect
- Week 1Tolerability and dose-response.
- Week 2-4Early effect window.
- Week 4-8Peak benefit assessment.
- Week 8+Cycle decision point.
Side Effects & Safety
- Common (>10% users): Unknown — no real safety data
- Less common: Injection-site reactions
- Rare-serious (<1% but worth knowing):
- Theoretical concern: peptide also affects hematopoiesis — could in principle alter blood counts
- Theoretical concern: any growth factor with mitogenic activity carries hypothetical neoplasia risk if subclinical malignancy present
- Unknown immunogenicity
- Specific watch periods: No clinical guidance exists
References
Bab I, et al. (1992) — Histone H4-related osteogenic growth peptide (OGP): a novel circulating stimulator of osteoblastic activity. EMBO J
foundational discovery paper
View StudyGreenberg Z, et al. (1995) — Mitogenic action of osteogenic growth peptide (OGP): role of amino and carboxy-terminal regions and characterization of primary signal transduction pathways. Biochim Biophys Acta
mechanism characterization
View StudyGabet Y, et al. (2004) — Osteogenic growth peptide modulates fracture callus structural and mechanical properties. Bone
fracture-healing animal model
View StudyPigossi SC, et al. (2016) — Role of Osteogenic Growth Peptide (OGP) and OGP(10-14) in Bone Regeneration: A Review. Int J Mol Sci
comprehensive review
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