BPC-157 Research Standard

BPC-157 (CAS 137525-51-0) is a synthetic pentadecapeptide, a 15-amino-acid partial sequence of body protection compound originally isolated from human gastric juice. It is supplied as a reference standard for laboratory work on fibroblast migration, cytoskeletal signalling and cell survival under oxidative stress.

Mechanism of Action & Research Context

BPC-157 has no identified receptor. What it does have is a well-defined in vitro signalling readout.

• BPC-157 is a 15-residue partial sequence of body protection compound, isolated from human gastric juice. Its best in vitro characterisation is in tendon fibroblasts: it accelerated outgrowth from tendon explants, increased survival under H₂O₂ stress, and dose-dependently increased migration and spreading, with F-actin formation induced and FAK and paxillin phosphorylation raised dose-dependently while total protein was unchanged. Notably it did not directly affect fibroblast proliferation by MTT assay — the effect is on migration and survival, not cell number.^[1]

• The FAK-paxillin pathway. Phosphorylation of focal adhesion kinase and paxillin rose dose-dependently while total protein stayed constant, which points to activation rather than expression change. Focal adhesion turnover is the machinery of cell migration, so this is a mechanistically coherent readout rather than a phenotype alone.^[1]

• Migration and survival, not proliferation. The distinction matters for experimental design: an assay measuring cell number will miss the effect entirely.^[1]

How strong is the evidence. Worth stating plainly, because BPC-157 is described online with more confidence than its literature supports. The review above notes that the majority of studies are in small rodent models, efficacy is yet to be confirmed in humans, only a handful of research groups have worked on it in two decades, and the precise healing mechanisms remain unresolved. The in vitro fibroblast work is solid and specific; the broader claims rest on a narrow base.^[2]

Research Applications

Primary fields of in vitro and preclinical laboratory investigation include:

• Transwell migration and spreading assays in tendon and dermal fibroblasts.^[1]

• Explant outgrowth models measuring fibroblast emergence from tissue.^[1]

• Oxidative stress survival assays under H₂O₂ challenge.^[1]

• Focal adhesion signalling by phospho-FAK and phospho-paxillin western blot, with F-actin staining.^[1]

• Independent replication, which the evidence base needs more than it needs new claims.^[2]

Analytical Documentation

Purity, identity and composition vary by manufacturing lot. Kimera Chems does not publish a single fixed purity figure for this item; refer to the batch-specific Certificate of Analysis (COA) issued for the lot received, which reflects third-party analytical testing for that lot.

Storage & Handling

Store at controlled room temperature. Keep tightly closed. Liquid formats: do not refrigerate or freeze. Cold storage may cause the solution to cloud or precipitate. If this occurs, return to room temperature and mix until clear.

Storage guidance is a house recommendation. Analytical documentation is per-lot release testing.