The short version of research chemical fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-04-16 and is reviewed periodically as new material appears.
BPC-157 is a synthetic pentadecapeptide with the sequence GEPPPGKPADDAGLV, corresponding to a partial fragment of a larger protein detected in human gastric juice. The name derives from the parent protein designation BPC, an abbreviation of body protection compound, with 157 acting as a fraction or batch identifier used by the original investigators. Its molecular weight is approximately 1419 daltons, and the chain contains no unusual residues or disulfide bridges. In the literature it is described as a short, water-soluble fragment rather than a complete natural protein.
Most early work on this peptide originated in the 1990s from a research group in Zagreb, Croatia, relying on animal models and cell cultures. Reported observations included effects on gastrointestinal lesion healing, tendon fibroblast migration, and blood vessel formation under controlled laboratory conditions. These findings come predominantly from rodent studies and in vitro assays rather than from human trials. Controlled human data remain limited, and the degree to which animal results translate to human physiology is an open question rather than a settled fact.
Within the research literature, the peptide is discussed through several provisional mechanisms, including cytoprotection, modulation of growth factor signaling, and interaction with the nitric oxide system. None of these mechanisms is fully characterized, and no single pathway is universally accepted. Review articles typically note the gap between consistent animal findings and sparse human evidence. The compound is classified as a research chemical rather than an approved pharmaceutical, which shapes how studies are designed, funded, and reported.
Doses in the literature are usually expressed in micrograms or nanograms per kilogram of body weight. Investigators have administered the peptide by several routes, including injection and oral delivery, depending on the question asked. Route and dose vary widely across studies, which complicates direct comparison of results. Many papers report effects at low doses, but the absence of a standardized protocol limits generalization. Reporting practice differs between research groups.
Some properties, such as the peptide's sequence and molecular mass, are firmly established. Other claims, particularly about mechanism and clinical benefit, remain open questions. Proposed mechanisms include effects on nitric oxide signaling and on cell migration, but these are hypotheses supported by limited evidence. Reviewers often note that the field lacks large controlled human trials. Positive animal findings are best treated as signals for further study rather than as settled conclusions.
Most published studies examine BPC-157 in animal models rather than in humans. Common subjects include rats and mice, and researchers often use models of tissue injury, surgery, or induced inflammation. Reported endpoints include healing rates, blood vessel formation, and markers of tissue repair. These designs provide controlled comparisons, but findings in animals do not automatically transfer to people. Human clinical data remain limited and are frequently described as preliminary.
| Property | Value | Notes |
|---|---|---|
| Molecular formula | C62H98N16O22 | computed for the free peptide |
| Molecular weight | about 1419 Da | monoisotopic mass near 1418.7 |
| Amino acid count | 15 | single chain, no disulfide bonds |
| Solubility | freely soluble in water | also dissolves in saline and phosphate buffer |
| Common synonyms | pentadecapeptide BPC, BPC 157 | fragment notation varies by source |
BPC-157 is a synthetic peptide composed of fifteen amino acid residues, with the sequence Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. Its name derives from body protection compound, a term used for a protein fraction identified in human gastric juice. Researchers in Zagreb first reported the pentadecapeptide in the early 1990s and described it as a stable fragment of that larger protein. The compound is also catalogued as PL 14736 and, in some commercial contexts, as bepecin. Its molecular formula is C62H98N16O22 and its monoisotopic mass is approximately 1419 daltons.
Most published work on BPC-157 consists of preclinical studies, including rodent models of tissue injury, gastrointestinal lesions, and vascular or tendon damage, together with in vitro cell assays. Reviews frequently note that the mechanisms proposed in these papers remain incompletely characterised and that findings have not been confirmed in large randomised human trials. The compound is widely sold as a research chemical rather than a licensed medicine, and labels commonly carry a statement that it is not for human use. Whether any of the reported animal effects translate to humans is an open question rather than an established result.
Terminology in the literature is not fully standardised. Papers and product listings use BPC-157, BPC 157, and the longer phrase stable gastric pentadecapeptide BPC 157 interchangeably, and synonyms such as bepecin or PL 14736 appear in older or company-linked publications. Purity claims and reported masses can also differ between sources because peptide preparations may include counterions, residual solvents, or bound water. This variability complicates direct comparison of results across studies and makes the exact identity and grade of a given sample worth verifying. Discussions of the compound should therefore specify the source, salt form, and stated purity where those are known.
Once dissolved, the material is considerably less stable than the dry solid. Aqueous solutions are usually kept cold and used within a short window, and neutral or mildly acidic buffers are preferred over strongly alkaline conditions. Freeze-thaw cycles promote aggregation and loss of material to container surfaces, so dividing a batch into single-use aliquots is standard. Adsorption to plastic and glass can lower the measured concentration, meaning solution strength may need rechecking before an experiment.
Identity and purity are established with complementary methods rather than one test. Reverse-phase high-performance liquid chromatography separates the main peak from deletion sequences and oxidized variants, and its area percentage is the usual purity figure. Mass spectrometry confirms the expected molecular mass and can flag truncations or modifications that chromatography alone might miss. Amino acid analysis and peptide mapping add sequence-level confirmation, while residual counter-ion and water content are measured separately.
A freeze-dried sample is generally the most stable form and is commonly held at minus twenty degrees Celsius or lower for long-term keeping, with brief transfers at room temperature. The solid is hygroscopic, so vials are warmed to ambient temperature before opening to prevent condensation from degrading the contents. Light exposure and repeated temperature cycling are both avoided in routine handling. Storage over a desiccant is a common laboratory practice that limits moisture uptake during repeated access.
=== Peptidyl transfer reaction === An induced-fit mechanism has been revealed for how 50S catalyzes the peptidyl transfer reaction and prevents peptidyl hydrolysis. The amino group of an aminoacyl-tRNA (binds to A site) attacks the carbon of a carbonyl group of a peptidyl-tRNA (binds to P site) and finally yields a peptide extended by one amino acid esterified to the A site tRNA bound to the ribosomal A site and a deacylated tRNA in the P site. When the A site is unoccupied, nucleotide U2620 (E. coli U2585), A2486 (2451) and C2106 (2063) sandwich the carbonyl group in the middle, forcing it into an orientation facing the A site. This orientation prevents any nucleophilic attack from the A site because the optimal attacking angle is 105 degrees from the plane of the ester group. When a tRNA with a complete[?] CCA sequence at its acceptor stem is bound to the A site, C74 of the tRNA stacking with U2590 (2555) induces a conformational change in the ribosome, resulting in movement of U2541 (2506), U2620 (2585) through G2618 (2583). The displacement of bases allows the ester group to adopt a new conformation accessible to nucleophilic attack from the A site. The N3 (nitrogen) of A2486 (2451) is closest to the peptide bond being synthesized and may function as a general base to facilitate the nucleophilic attack by the amino group of the aminoacyl-tRNA (in the A site). The pKa of A2486 (2451) is about 5 units higher in order to hydrogen bond with the amino group thus increasing its nucleophilicity. The elevation of pKa is achieved through a charge relay mechanism.
Yin vacuity (also termed "vacuity-heat"): heat sensations, possible sweating at night, insomnia, dry pharynx, dry mouth, dark urine, and a "fine" and rapid pulse. Yang vacuity ("vacuity-cold"): aversion to cold, cold limbs, bright white complexion, long voidings of clear urine, diarrhea, pale and enlarged tongue, and a slightly weak, slow and fine pulse. TCM also identifies drugs believed to treat these specific symptom combinations, i.e., to reinforce yin and yang.
A 2018 research study conducted in Poland with the recruitment of ten healthy volunteers who ate 300 grams per head (about twice the normal dose) of fried T. equestre in a single meal reported no consequences or alterations. However, a 2020 systematic review highlighted several studies indicating elevated plasma creatine kinase (CK) pro-inflammatory activities, in addition to its effect on other liver function biomarkers, underlining a cause for concern and suggests "not to harvest and consume this species". The same 2020 study registered the same level of plasma CK using different edible mushrooms. For example the same level obtained by T. equestre was also obtained by Boletus edulis.
=== Other === The Congress that passed the Taft–Hartley Amendments considered repealing the Norris–La Guardia Act to the extent necessary to permit courts to issue injunctions against strikes violating a no-strike clause, but chose not to do so. The Supreme Court nonetheless held several decades later that the act implicitly gave the courts the power to enjoin such strikes over subjects that would be subject to final and binding arbitration under a collective bargaining agreement. Finally, the act imposed a number of procedural and substantive standards that unions and employers must meet before they may use employer funds to provide pensions and other employee benefit to unionized employees. Congress has since passed more extensive protections for workers and employee benefit plans as part of the Employee Retirement Income Security Act ("ERISA").
Sources: en.wikipedia.org
=== 3T Biosciences === The startup develops T-Cell therapy, which strengthens the immune system to fight cancer cells. The company relies on Garcia's research. Business operations are led by Luke Lee, a PhD student in cancer biology. The company’s principal investor is Asset Management Ventures, with additional involvement from a group of academics from Christopher Garcia’s biology lab at Stanford University, according to CNBC. Other known founders are Gee Marvin and Lee Sibener. The startup has a partnership with Boehringer Ingelheim. Most microsatellite stable colorectal cancers (MSS CRC) resist checkpoint inhibitors, like many other "cold" tumors. 3T Biosciences’ 3T-TRACE platform uses diverse target libraries and machine learning to find new shared TCR targets beyond the limits of traditional proteome-based methods.
== Translational readthrough == Stop codon suppression or translational readthrough occurs when in translation a stop codon is interpreted as a sense codon, that is, when a (standard) amino acid is 'encoded' by the stop codon. Mutated tRNAs can be the cause of readthrough, but also certain nucleotide motifs close to the stop codon. Translational readthrough is very common in viruses and bacteria, and has also been found as a gene regulatory principle in humans, yeasts, bacteria and drosophila. This kind of endogenous translational readthrough constitutes a variation of the genetic code, because a stop codon codes for an amino acid. In the case of human malate dehydrogenase, the stop codon is read through with a frequency of about 4%. The amino acid inserted at the stop codon depends on the identity of the stop codon itself: Gln, Tyr, and Lys have been found for the UAA and UAG codons, while Cys, Trp, and Arg for the UGA codon have been identified by mass spectrometry. Extent of readthrough in mammals have widely variable extents, and can broadly diversify the proteome and affect cancer progression.
=== Tunable resistive pulse sensing === Tunable resistive pulse sensing (TRPS) is a single-particle analytical technique used to measure the size, concentration, and charge of nano and micro-sized particles by detecting a change in ionic current. The passage of an individual particle through a charged nanopore creates a transient change in resistance and subsequent decrease in the background current, known as a blockade event. Blockade characteristics are representative of particle and sample properties: blockade magnitude is proportional to particle size, the blockade rate is directly related to particle concentration, and the speed with which a particle moves through the pore is related to its zeta potential.
Sources: en.wikipedia.org
The inactivation of the enzymes that stop the reaction and activating of enzymes that provide a positive feedback will increase glycogen, lipid & protein syntheses and promote glucose intake. (Image to help explain the function of the proteins mentioned above in the positive feedback.)
== Uses == The plant is native to the Caribbean, where the Taíno people were the first recorded peoples to use it and cultivate it. In 1560, Jean Nicot de Villemain, then French ambassador to Portugal, brought tobacco seeds and leaves as a "wonder drug" to the French court. In 1586 the botanist Jaques Dalechamps gave the plant the name of Herba nicotiana, which was also adopted by Linné. It was considered a decorative plant at first, then a panacea, before it became a common snuff and tobacco plant. Tobacco arrived in Africa at the beginning of the 17th century. The leaf extract was a popular pest control method up to the beginning of the 20th century. In 1851, the Belgian chemist Jean Stas documented the use of tobacco extract as a murder poison. The Belgian count Hippolyte Visart de Bocarmé had poisoned his brother-in-law with tobacco leaf extract in order to acquire some urgently needed money. This was the first exact proof of alkaloids in forensic medicine. It is now commercially cultivated worldwide. All parts of the plant contain nicotine, which can be extracted and used as an insecticide. The dried leaves can also be used; they remain effective for 6 months after drying. The juice of the leaves can be rubbed on the body as an insect repellent. The leaves can be dried and chewed as an intoxicant. The dried leaves are also used as snuff or are smoked. This is the main species that is used to make cigarettes, cigars, and other products. A drying oil is obtained from the seed. Other varieties are cultivated as ornamental plants.
== General bibliography == Duane, H. D. Roller; Thilorier, M. (1952). "Thilyorier and the First Solidification of a "Permanent" Gas (1835)". Isis. 43 (2): 109–113. doi:10.1086/349402. JSTOR 227174. S2CID 144091865. Goroll, Allan H; Mulley, Albert G (2009). Primary Care Medicine: Office evaluation and management of the adult patient. Lippincott Williams & Wilkins. ISBN 978-0-7817-7513-7. Häring, Heinz-Wolfgang (2008). Industrial Gases Processing. Christine Ahner. Wiley-VCH. ISBN 978-3-527-31685-4. Retrieved 2009-07-31. Housecroft, Catherine; Sharpe, Alan G (2001). Inorganic chemistry. Harlow: Prentice Hall. p. 410. ISBN 978-0-582-31080-3. Retrieved 2009-07-31. Keyes, Conrad G (2006). Guidelines for Cloud Seeding to Augment Precipitation. American Society of Civil Engineers. ASCE Publications. ISBN 978-0-7844-0819-3. Verma, N. K.; Khanna, S. K.; Kapila, B. (2008). Comprehensive Chemistry for Class XI. New Delhi: Laxmi Publications. ISBN 978-81-7008-596-6. Retrieved 2009-07-31. McCarthy, Robert E. (1992). Secrets of Hollywood Special Effects. Boston: Focal Press. ISBN 978-0-240-80108-7. Mitra, Somenath (April 2004). Sample Preparation Techniques in Analytical Chemistry. Wiley-IEEE. ISBN 978-0-471-32845-2. Retrieved 2009-07-31. Treloar, Roy D. (2003). Plumbing Encyclopaedia (3rd ed.). Wiley-Blackwell. p. 175. ISBN 978-1-4051-0613-9. Retrieved 2009-07-31. Yaws, Carl (2001). Matheson Gas Data Book (7th ed.). McGraw-Hill Professional. ISBN 978-0-07-135854-5. 982 pages. Retrieved 2009-07-27.
==== 1998–1999 ==== On August 7, 1998, Andrés Pastrana Arango was sworn in as the President of Colombia. A member of the Conservative Party, Pastrana defeated Liberal Party candidate Horacio Serpa in a run-off election marked by high voter turn-out and little political unrest. The new president's program was based on a commitment to bring about a peaceful resolution of Colombia's longstanding civil conflict and to cooperate fully with the United States to combat the trafficking of illegal drugs. In July 1999, Colombian military forces attacked the town of Puerto Lleras where FARC rebels were stationed. Using U.S. supplied aircraft and equipment, and backed with U.S. logistical support, Colombian government forces strafed and bombed the town for over 72 hours. In the attack, three civilians were killed and several others were wounded as the military attacked hospitals, churches, ambulances, and residential areas. FARC rebels were forced to flee the area and many were killed or wounded. The Colombian government claimed that this was a significant victory, while human rights groups claimed this was proof that "anti-narcotics" aid was actually just military aid being used to fight a leftist insurgency.
Sources: en.wikipedia.org
The sequence corresponds to a fragment of a protein found in human gastric juice, so related sequences are natural. The isolated fifteen-amino-acid peptide supplied for research is produced synthetically. Whether the free fragment circulates naturally in humans has not been settled.
In most jurisdictions it is not an approved medicine and is handled as a research material. Import and sale rules differ by country, and some regulators have placed it in categories that restrict human use. Status can change, so current local rules apply.
Rodent models dominate, particularly rats with induced gastric lesions, tendon injury, or vascular disruption. These designs allow controlled comparison but differ anatomically and metabolically from humans. Results from such models are commonly cited as preliminary.
Human data are limited. Most evidence comes from animal experiments and from small or uncontrolled reports. The absence of large trials means clinical effects and safety are not firmly established.