KPV: The Anti-Inflammatory Tripeptide Research Guide
By Peptura Research Team/22 May 2026/6 min read
What KPV Is
KPV is a tripeptide, lysine-proline-valine, corresponding to the three C-terminal amino acids at positions 11 to 13 of alpha-melanocyte-stimulating hormone (α-MSH). For all its minimal size, KPV holds onto a large share of the parent peptide's anti-inflammatory activity, which makes it a useful tool for studying melanocortin-derived anti-inflammatory signalling in models of gastrointestinal and dermatological inflammation.
Peptura supplies KPV as research-grade lyophilised powder for in-vitro laboratory use only.
Where It Comes From
Alpha-MSH is a 13-amino-acid peptide hormone produced by post-translational cleavage of pro-opiomelanocortin (POMC). Beyond its familiar role in melanogenesis through MC1R activation, α-MSH shows documented anti-inflammatory activity across many research models, working through several receptors including MC1R, MC3R, and MC5R. The C-terminal tripeptide α-MSH(11-13), which is KPV, was picked out as a minimal sequence that keeps a substantial slice of that anti-inflammatory effect while shedding the melanogenic activity tied to the N-terminal end.
Mechanism: Reining In NF-κB
KPV research has centred on its ability to suppress activation of nuclear factor kappa B (NF-κB), the transcription factor that switches on pro-inflammatory cytokines such as TNF-α, IL-6, and IL-1β. In cell-culture models, KPV cuts NF-κB nuclear translocation and the downstream cytokine expression that follows an inflammatory stimulus.
Which receptor carries the effect is still debated. Early models proposed MC1R-dependent signalling, but later work found KPV activity in MC1R-deficient mice, pointing to a partly MC1R-independent mechanism that may involve direct intracellular targets or other family members such as MC5R.
Kannengiesser and colleagues reported in Inflammatory Bowel Diseases in 2008 that KPV produced significant anti-inflammatory effects in two mouse models of colitis, dextran sodium sulfate colitis and CD45RB-high transfer colitis, and that the effects held up in mice expressing a non-functional MC1R. That fixed KPV as a tool with anti-inflammatory activity at least partly independent of classical melanocortin receptor signalling.
Applications in Gut Models
The gut is where KPV has been studied most. Models of ulcerative colitis, Crohn's-like ileitis, and chemically induced colitis have been used to characterise its effects on epithelial barrier integrity, mucosal cytokine expression, and inflammatory cell infiltration. Being so small, it is a candidate for oral-delivery research, which has spurred interest in formulation approaches such as nanoparticle encapsulation.
Xiao and colleagues reported in Molecular Therapy in 2017 on a hyaluronic-acid-functionalised nanoparticle system for targeted oral delivery of KPV in ulcerative colitis research models, showing reduced TNF-α expression and improved mucosal healing in treated animals against controls. Work like this places KPV within the wider 'gut peptide' literature, where it is often grouped with BPC-157 and other compounds studied in gastrointestinal tissue models.
Set Against BPC-157
KPV and BPC-157 are both small peptides studied in gastrointestinal models, but their proposed mechanisms differ. BPC-157 research leans on angiogenesis, nitric oxide signalling, and growth-factor-related repair. KPV research leans on direct anti-inflammatory cytokine suppression through NF-κB. The two are sometimes run together in models that need both inflammation control and tissue repair. The BPC-157 research guide and the BPC-157 and TB-500 research overview give context on related gut and tissue peptide research.
Laboratory Handling
KPV comes as lyophilised powder. Store at -20°C before reconstitution. Reconstitute with bacteriostatic water by running the diluent slowly down the inner wall of the vial and swirling gently. The tripeptide is fairly stable thanks to its small size and its lack of disulphide bonds or labile residues, but sterile handling still applies. Keep the reconstituted solution at 2-8°C and use within four weeks.
Sourcing in the UK
Peptura supplies research-grade KPV as lyophilised powder with full third-party HPLC documentation published on the product page. Same-day UK dispatch on orders placed before 2pm GMT, free Royal Mail Tracked shipping over £45. For in-vitro laboratory research use only, not for human consumption.
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Disclaimer: This article is for research and educational purposes only. All information provided is not intended as medical advice. Peptura products are not for human consumption and are sold strictly for laboratory research use only.