KPV

Molecular Information

Research Summary

KPV represents the minimal active sequence of alpha-MSH responsible for its anti-inflammatory activity. Research has demonstrated that this small tripeptide retains the potent anti-inflammatory properties of the full-length hormone despite lacking melanocortin receptor binding activity. Studies in animal models of inflammation and in-vitro cell culture systems have shown that KPV inhibits inflammatory signaling pathways, particularly NF-kappaB nuclear translocation. The peptide has been studied in gastrointestinal inflammation models and dermal inflammation models in laboratory animals.

Mechanism of Action

KPV enters cells via peptide transporters (PepT1) and directly inhibits NF-kappaB signaling by preventing the nuclear translocation of the p65 subunit. Unlike full-length alpha-MSH, KPV does not require melanocortin receptor binding for its anti-inflammatory effects. It also reduces inflammatory cytokine production (TNF-alpha, IL-6, IL-8) and modulates inflammatory enzyme expression.

Published Animal Studies

• [1]Rodent colitis models demonstrated significant reduction in inflammation severity and tissue damage (Dalmasso et al., 2008)
• [2]Studies in mouse dermatitis models showed reduced inflammatory cell infiltration and cytokine levels (Brzoska et al., 2008)
• [3]Oral administration studies in rats showed effects on gastrointestinal inflammation through PepT1-mediated uptake
• [4]Animal wound models demonstrated anti-inflammatory effects and modulation of healing kinetics

In-Vitro Research

• •Intestinal epithelial cell cultures showed inhibition of NF-kappaB nuclear translocation
• •Macrophage cultures demonstrated reduced TNF-alpha and IL-6 production
• •PepT1 transport studies confirmed cellular uptake mechanism independent of melanocortin receptors
• •Colonocyte studies showed modulation of inflammatory signaling cascades

Research Applications

References

1. 1.Dalmasso G, et al. "PepT1-mediated tripeptide KPV uptake reduces intestinal inflammation." Gastroenterology. 2008;134(1):166-178.
2. 2.Brzoska T, et al. "Alpha-melanocyte-stimulating hormone and related tripeptides: biochemistry, antiinflammatory and protective effects." Endocr Rev. 2008;29(5):581-602.