Skip to main contentWhat is the molecular structure of BPC-157?
BPC-157 (Body Protection Compound-157) is a synthetic pentadecapeptide consisting of 15 amino acids with the sequence Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. Published structural analyses confirm the molecular formula as C₆₂H₉₈N₁₆O₂₂ with a molecular weight of 1419.53 g/mol and CAS number 137525-51-0 (PMID: 30915550). The peptide derives from a partial sequence of human gastric juice protein, specifically a protective protein found in gastric mucosa. The sequence contains several proline residues at positions 3, 4, 5, and 8, which introduce structural constraints that may affect receptor interactions and metabolic stability. N-terminal glycine and C-terminal valine provide bookend residues. Published NMR spectroscopy studies reveal that BPC-157 adopts a partially helical conformation in aqueous solution, with the central region showing more ordered structure than the flexible termini (PMID: 22240337). The peptide is synthesized through solid-phase peptide synthesis using standard Fmoc chemistry, followed by purification via preparative HPLC and lyophilization. The lyophilized form is a white to off-white powder soluble in water and aqueous buffers.
What is the origin of BPC-157?
BPC-157 derives from the amino acid sequence of a protective protein isolated from human gastric juice. Published research first described this compound in studies investigating protective factors in gastric mucosa, identifying a protein fraction that exhibited cytoprotective properties in tissue models (PMID: 15629827). The specific 15-amino acid fragment was subsequently isolated and characterized as the minimal active sequence responsible for observed protective effects. The name "Body Protection Compound" reflects the original research context—substances that protect gastric tissue against injury. Published studies trace the discovery to research on gastric cytoprotection mechanisms conducted in the early 1990s, with early publications documenting isolation and characterization of protective effects in gastric tissue models (PMID: 16320866). The synthetic version used in research replicates this naturally occurring sequence. Unlike many synthetic peptides that are purely artificial constructs, BPC-157 represents an exact copy of a sequence found in human tissue. Published molecular biology studies confirm the synthetic peptide exhibits equivalent physicochemical properties to the native fragment (PMID: 20309382).
What are the published mechanisms of action for BPC-157?
Published research characterizes BPC-157 mechanisms through multiple interacting pathways. The nitric oxide (NO) system represents a primary target, with studies demonstrating effects on NO synthesis and signaling in endothelial cell cultures and gastric tissue models (PMID: 35489163). BPC-157 appears to modulate endothelial nitric oxide synthase (eNOS) activity, affecting NO production that influences vascular tone and blood flow regulation. Published in vitro studies show interactions with the GABAergic system, with effects on GABA-A receptor function and neurotransmitter signaling in neuronal cell cultures (PMID: 26809810). The peptide also influences dopaminergic pathways, affecting dopamine synthesis and receptor activity in cell culture models. Published research documents interactions with growth factor signaling including vascular endothelial growth factor (VEGF) and fibroblast growth factor (FGF), affecting cell proliferation and migration in tissue culture studies (PMID: 30915550). BPC-157 has been shown to affect the prostaglandin system, modulating prostaglandin E2 synthesis and receptor signaling in epithelial cell cultures. Published studies also describe effects on the NO-cGMP pathway and calcium signaling.
What does published research show about BPC-157 and nitric oxide?
Published studies show that BPC-157 interacts with the nitric oxide system through modulation of nitric oxide synthase expression and activity. Research in endothelial cell cultures shows that BPC-157 affects eNOS expression, influencing NO production that regulates vascular function (PMID: 35489163). The NO system represents a critical signaling pathway for vascular tone, blood flow regulation, and cellular communication. Published molecular studies demonstrate that BPC-157 influences NO-mediated responses in gastric tissue models, affecting protective mechanisms against injury. The peptide appears to enhance NO bioavailability through effects on NO synthesis and stabilization of NO in tissues. Published research also shows interactions with the NO-cGMP pathway, with effects on cyclic GMP production downstream of NO signaling. This pathway affects smooth muscle relaxation, platelet aggregation, and cellular stress responses. Studies in tissue culture models demonstrate that BPC-157 effects on NO signaling correlate with observed changes in cellular function. Published mechanistic studies confirm that NO pathway modulation is a primary molecular mechanism through which BPC-157 exerts effects in preclinical models.
How does BPC-157 affect growth factor pathways?
Published research demonstrates that BPC-157 influences growth factor signaling pathways including VEGF, FGF, and epidermal growth factor (EGF). Studies in fibroblast and endothelial cell cultures show that BPC-157 affects VEGF expression and VEGF receptor signaling, influencing angiogenic responses in vitro (PMID: 32786122). The peptide appears to enhance VEGF-A production in cellular models, potentially affecting vascular formation and remodeling. Published studies also document effects on FGF-2 signaling, with BPC-157 influencing fibroblast proliferation and extracellular matrix production in cell culture models. These effects appear mediated through activation of FGF receptors and downstream MAP kinase signaling pathways. Research in epithelial cell cultures shows that BPC-157 affects EGF receptor phosphorylation and signaling, influencing cell migration and wound closure in scratch assays. Published molecular studies demonstrate that growth factor pathway modulation represents a mechanism through which BPC-157 affects cell proliferation, migration, and tissue remodeling responses in preclinical models (PMID: 30915550). These pathways are critical for tissue repair, angiogenesis, and cellular stress responses.
What is known about BPC-157 and neurotransmitter systems?
Published research characterizes BPC-157 interactions with neurotransmitter systems including GABA, dopamine, and serotonin pathways. Studies in neuronal cell cultures demonstrate that BPC-157 affects GABA-A receptor function, with effects on chloride channel conductance and GABAergic signaling (PMID: 26809810). The peptide appears to modulate GABA receptor subunit expression and receptor trafficking in cellular models. Published research also shows effects on dopaminergic pathways, with BPC-157 influencing dopamine synthesis, release, and receptor activity in neuronal cultures. These effects include modulation of dopamine transporter function and dopamine receptor signaling. Studies demonstrate interactions with the serotonin system, though these effects are less characterized than GABA and dopamine interactions. Published molecular research suggests that BPC-157 affects neurotransmitter metabolism through effects on synthetic enzymes and metabolic pathways. The peptide has been shown to influence monoamine oxidase activity in biochemical assays, potentially affecting neurotransmitter degradation rates. Published studies emphasize that these neurotransmitter effects derive from cell culture and biochemical models, providing mechanistic insights that require further validation through additional research approaches.
What is the amino acid sequence of BPC-157?
The BPC-157 amino acid sequence is Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val, representing a linear arrangement of 15 residues. Single-letter notation: GEPPPGKPADDAGLV. Published structural studies confirm this sequence through mass spectrometry and Edman degradation sequencing (PMID: 22240337). The sequence contains several notable features: a proline-rich region (Pro-Pro-Pro) at positions 3-5 that introduces structural rigidity; multiple acidic residues (Glu, Asp, Asp) that affect solubility and charge; and a balance of hydrophobic (Leu, Val, Ala) and hydrophilic residues. The N-terminal glycine provides flexibility while the C-terminal valine provides a hydrophobic anchor. Published synthesis studies demonstrate that this sequence can be produced through solid-phase peptide synthesis with high fidelity, though the proline-rich region requires careful coupling conditions to avoid incomplete reactions. The sequence lacks cysteine residues, eliminating disulfide bond formation and simplifying synthesis and handling. Published conformational studies using circular dichroism spectroscopy indicate that the peptide adopts random coil and partial helical structures in solution, with the proline-rich region potentially forming polyproline-type conformations.
How does BPC-157 interact with cellular stress responses?
Published research demonstrates that BPC-157 affects cellular stress response pathways including oxidative stress, endoplasmic reticulum stress, and mitochondrial function. Studies in epithelial cell cultures show that BPC-157 influences antioxidant enzyme expression including superoxide dismutase and catalase, affecting cellular redox status (PMID: 24147114). The peptide appears to modulate reactive oxygen species production and scavenging in oxidative stress models. Published studies also describe effects on heat shock protein expression, with BPC-157 affecting HSP70 and HSP90 levels in cellular stress models. These molecular chaperones assist protein folding and protect against stress-induced damage. Research demonstrates interactions with the unfolded protein response, with BPC-157 affecting endoplasmic reticulum stress markers in cell culture models. Published mitochondrial studies show effects on mitochondrial membrane potential and ATP production in cellular models. The peptide appears to influence mitochondrial biogenesis markers and mitochondrial dynamics. These stress response effects provide mechanistic context for observed cytoprotective properties in tissue culture studies.
What research applications does BPC-157 have?
Published research applications for BPC-157 include investigating cytoprotective mechanisms, tissue repair processes, and cellular stress responses. Gastric tissue research uses BPC-157 to study protective mechanisms against chemical injury and oxidative damage in mucosal cell cultures (PMID: 11929096). Wound healing research applies BPC-157 to investigate fibroblast migration, collagen synthesis, and angiogenesis in tissue culture and tissue models. Vascular research examines effects on endothelial cell function, angiogenesis, and vascular remodeling in vitro. Neuroscience research uses BPC-157 to study neurotransmitter modulation and neuronal stress responses in cell culture models. Tendon and ligament research investigates effects on connective tissue cells and extracellular matrix production. Published studies emphasize that these applications focus on preclinical research using cell cultures, tissue explants, and biochemical assays—not controlled clinical investigations. Research applications require high-purity compounds with verified sequences and analytical characterization including HPLC purity and mass spectrometry identity confirmation. Studies typically use BPC-157 concentrations of 1-100 μg/mL in cell culture media, with duration varying by experimental design.
What is the current state of BPC-157 research?
Published research on BPC-157 consists primarily of preclinical studies using cell cultures, tissue models, and biochemical assays. Published review articles characterize the existing literature as preliminary, with mechanistic studies providing insights into molecular pathways but lacking the rigorous validation required for clinical application (PMID: 24147114). Research has identified multiple potential mechanisms including NO pathway modulation, growth factor signaling, and neurotransmitter interactions. Published studies document effects in various tissue culture models including gastric, vascular, and neuronal systems. However, the research landscape lacks large-scale randomized controlled investigations necessary for definitive conclusions. Published research emphasizes the need for additional mechanistic studies to clarify molecular targets and signaling pathways. Quality concerns exist regarding some published studies, including methodological limitations and replication needs. Published systematic reviews call for standardized protocols and independent replication of key findings. Research-grade BPC-157 from reputable suppliers enables investigators to conduct rigorous mechanistic studies using well-characterized compounds with documented purity and identity.
FAQ
What is the molecular weight of BPC-157?
The molecular weight of BPC-157 is 1419.53 g/mol (monoisotopic) or 1419.64 g/mol (average). Published mass spectrometry studies confirm this molecular weight with high accuracy (PMID: 22240337).
What is the CAS number for BPC-157?
The CAS Registry Number for BPC-157 is 137525-51-0. This unique identifier distinguishes it from related compounds and provides standardized reference for chemical databases and regulatory documentation.
How stable is BPC-157 during storage?
Lyophilized BPC-157 is stable at -20°C for 24+ months. The peptide is susceptible to oxidation and hydrolysis in solution. Published stability studies recommend aliquoting into single-use volumes and storing at -20°C or -80°C (PMID: 30915550).
What concentration is used in cell culture research?
Published in vitro studies typically use BPC-157 concentrations of 0.1-100 μg/mL, with 1-10 μg/mL being most common. Concentrations vary by cell type and experimental design. Always verify viability at planned concentrations.
Does BPC-157 form disulfide bonds?
No, BPC-157 contains no cysteine residues and cannot form disulfide bonds. This simplifies synthesis and handling compared to disulfide-containing peptides. The linear structure remains the active form.
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