BPC-157

Molecular Profile

BPC-157 (Body Protective Compound-157; sequence Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val; C₆₂H₉₈N₁₆O₂₂, MW 1419.5 g/mol, CAS 137525-51-0) is a 15-amino-acid synthetic pentadecapeptide derived from a sequence identified in human gastric juice. No canonical high-affinity receptor has been assigned. Documented molecular interactions include modulation of eNOS (endothelial nitric oxide synthase) and nNOS (neuronal NOS) expression, with downstream cGMP consequences in vascular and neural tissue models. The compound activates the PI3K/Akt signaling axis and FAK (focal adhesion kinase)/paxillin pathway in fibroblast cultures, influencing cytoskeletal organization and migration assay readouts. VEGF (vascular endothelial growth factor) transcript levels are elevated in treated in vivo tissue samples, consistent with reported angiogenic observations. NF-κB pathway modulation has been characterized in gastrointestinal mucosal protection models. COL1A1 (Type I collagen alpha-1 chain gene) upregulation has been reported in tendon fibroblast in vitro studies. Published EC50, IC50, or Kd values at specific molecular targets are absent from the current literature; BPC-157 lacks a defined receptor-binding pharmacology in the conventional sense.

Published Data

All available data originates from preclinical rodent studies and in vitro cell culture work; no controlled human clinical trials have been published. Seiwerth et al. (J Physiology-Paris, 1997) described histological and functional differences in transected Achilles tendon and muscle injury models compared to saline controls. Staresinic et al. (J Orthop Res, 2006) reported statistically significant functional recovery metrics in transected quadriceps muscle in rats. Sikiric et al. (Curr Pharm Des, 2011) reviewed cytoprotective activity in GI mucosal models, with particular attention to eNOS/nNOS modulation. Neurological studies in rodents examined dopaminergic and serotonergic pathway interactions after dopamine-depleting agents, with modulatory effects on extrapyramidal symptom severity reported (Sikiric et al., J Physiol Paris, 2003). COL1A1 expression data in fibroblast cultures has not been independently replicated across multiple laboratories. The mechanistic account remains fragmented due to the absence of a defined receptor-binding model.

Research Relevance

BPC-157 is studied as a multi-pathway signaling probe in models of tissue injury, gastrointestinal mucosal damage, and neurological insult. Its documented resistance to proteolytic degradation in gastric juice provides practical stability for experimental use. Researchers investigating NO-dependent vascular biology, VEGF-driven angiogenesis, or cytoskeletal dynamics via FAK/PI3K pathways may find it a relevant pharmacological tool. Translation to human biology is not yet established. Classified exclusively for research use.