Research

The gastrointestinal tract is one of the most dynamic tissues in the body, constantly exposed to mechanical, microbial, and inflammatory stressors. Several peptides are being explored for their roles in mucosal protection, epithelial repair, and microbiome-immune interaction. Among the most researched, BPC-157, a stable gastric pentadecapeptide, has repeatedly demonstrated cytoprotective, angiogenic, and reparative effects throughout the digestive system [1–3].
Preclinical models show that BPC-157 can accelerate ulcer healing, counteract NSAID-induced damage, and promote intestinal anastomosis recovery, largely through nitric-oxide modulation and improved microvascular stability.

KPV (Lys-Pro-Val), a tripeptide fragment of α-MSH, has been shown to exert potent anti-inflammatory effects in the gut by blocking NF-κB activation and reducing cytokine release from epithelial cells [4].
In colitis models, oral or intrarectal administration of KPV reduced tissue injury, neutrophil infiltration, and oxidative damage, pointing to its potential as a barrier-protective and anti-inflammatory research agent.

Lastly, Thymosin Alpha-1 (Tα1) contributes to gut immune homeostasis by enhancing mucosal T-cell signaling and regulating pattern-recognition receptor pathways in the intestinal epithelium [5].
Clinical and experimental data suggest Tα1 can help restore immune balance in conditions of intestinal inflammation and infection, reflecting its broader role in immune-epithelial cross-talk.

References

• Staresinic M, Sebecic B, Patrlj L, et al. Gastric pentadecapeptide BPC 157 accelerates healing of transected rat Achilles tendon and in vitro stimulates tendocyte growth. J Orthop Res. 2003;21(6):976–983. PMID: 14554208

• Duzel A, Vlainic J, Antunovic M, et al. Stable gastric pentadecapeptide BPC 157 in the treatment of colitis and ischemia and reperfusion in rats: new insights. World J Gastroenterol. 2017;23(48):8465–8488. PMID: 29358856

• Gwyer D, Wragg NM, Wilson SL. Gastric pentadecapeptide body protection compound BPC-157 and its role in accelerating musculoskeletal soft-tissue healing. World J Gastroenterol. 2019;25(35):5244–5260. PMID: 30915550
• Dalmasso G, Charrier-Harlin A, Nguyen HTT, et al. PepT1-mediated tripeptide KPV uptake reduces intestinal inflammation. Gastroenterology. 2008;134(1):166–178. PMID: 18061177
• Renga G, Pariano M, Costantini C, et al. Thymosin α1 protects from CTLA-4 intestinal immunopathology. Life Sci Alliance. 2020;3(10):e202000662.PMID: 32817121