BPC-157: Receptor and Signaling Research Overview
BPC-157 is a synthetic pentadecapeptide whose sequence is taken from a protein isolated from human gastric juice. This overview covers what the compound is, the receptor question, the signaling pathways it is studied at in cell-based assays, and how a lot is verified and documented. It is written for labs comparing research material, and every context described here is in-vitro.
Compound Identity
- Classification: Body Protection Compound (BPC) peptide, linear, synthetic
- Sequence: GEPPPGKPADDAGLV
- Length: 15 amino acids
- Molecular weight: about 1419 Da
- Origin of sequence: partial sequence of a protein found in human gastric juice; the research material is made by solid-phase synthesis
- Form supplied: lyophilized powder in a sealed vial
BPC-157 is not approved by the FDA, EMA or Health Canada. It is supplied for laboratory research on cell cultures and biochemical assays only.
Is There a BPC-157 Receptor?
No dedicated high-affinity receptor for BPC-157 has been established. That is why the literature describes it by the signaling pathways it is studied at rather than by a binding target. For assay design, this means the readouts are downstream: phosphorylation states, expression levels and signaling molecules measured in cultured cells.
Signaling Pathways Studied in Cell-Based Assays
VEGFR2 signaling
In endothelial cell cultures, BPC-157 is studied at vascular endothelial growth factor receptor 2 (VEGFR2). Assays look at VEGFR2 expression and at the internalization and phosphorylation of the receptor, followed by the downstream Akt step.
eNOS and the nitric oxide (NO) pathway
The NO pathway is the most discussed BPC-157 research context. Cell-based work measures phosphorylation of endothelial nitric oxide synthase (eNOS) and NO production in culture, alongside the VEGFR2 and Akt readouts above.
FAK and paxillin signaling
In fibroblast cultures, BPC-157 is studied at focal adhesion kinase (FAK) and its partner paxillin, the signaling pair that governs how cells attach to and spread on a surface. Readouts are phosphorylated FAK and paxillin by western blot.
ERK1/2 (MAPK) signaling
Endothelial cell studies also report on phosphorylation of ERK1/2, part of the MAPK cascade that sits downstream of many growth factor receptors, including VEGFR2.
Assay Types at a Glance
| Assay type | What is measured |
|---|---|
| Endothelial cell-culture signaling | VEGFR2 expression and phosphorylation, Akt, eNOS, ERK1/2 |
| NO measurement in culture | Nitric oxide or nitrite in culture supernatant |
| Fibroblast cell-culture signaling | FAK and paxillin phosphorylation, cell spreading |
| Gene expression (qPCR) | VEGFR2 transcript levels |
| Identity and purity | HPLC purity, see the batch COA |
Analytical Verification
Two tests answer two different questions. Mass spectrometry confirms identity: the observed mass should be consistent with about 1419 Da for GEPPPGKPADDAGLV. HPLC measures purity, meaning how much of the material is the target peptide rather than truncated or modified sequences. Purity by HPLC, see the batch COA. Our HPLC vs mass spectrometry guide covers what each result proves.
Documentation and Storage
Every lot has a batch COA in the COA library. Match the lot number on the vial to its COA and record it with your assay data. If you are new to the format, our guide on how to read a COA walks through each section.
Store the sealed lyophilized vial as stated on the label, protected from light and moisture. The material should be handled by qualified personnel in a controlled laboratory environment.
For Research Use Only. Not for use in diagnostic or therapeutic procedures.
