KPV
Also known as: Lysine-Proline-Valine · α-MSH(11-13)
Alpha-MSH C-Terminal Tripeptide
COMPOUND CLASS
Tripeptide fragment of alpha-MSH
PRIMARY PATHWAY
NF-κB modulation and melanocortin-related anti-inflammatory signaling
PRIMARY AREAS OF RESEARCH
Inflammatory signaling, gut barrier biology, wound models
RESEARCH STATUS
Preclinical; human trials are lacking
EVIDENCE LEVEL
Limited
OTHER NAMES
Lysine-Proline-Valine, α-MSH(11-13)
What Is KPV?
KPV is one of the smallest peptides studied in this field — just three amino acids: lysine, proline, and valine. It is the final fragment of alpha-MSH, a natural hormone involved in both pigmentation and inflammation control.
What makes it scientifically interesting is that this tiny fragment appears to retain the anti-inflammatory activity of the parent hormone without the pigmentation-related activity. That separation of functions is a central theme of the research.
- What it is
- A three-amino-acid peptide, the tail fragment of the natural hormone alpha-MSH.
- Category
- Cellular and immunological research peptide.
- Main system involved
- Inflammatory signaling, particularly the NF-κB pathway.
- Research interest
- Inflammation, gut barrier integrity, and skin inflammation models.
- Research status
- Mostly cell-culture and animal research; human clinical data is very limited.
Why Are Researchers Interested?
Anti-inflammatory activity without pigmentation
Cell studies suggest the fragment keeps one function of alpha-MSH while dropping another, which is useful for isolating mechanisms.
It appears to act inside cells
Unlike most peptides that dock with surface receptors, research suggests KPV may act within the cell on inflammatory signaling directly.
Gut barrier models
Animal studies of intestinal inflammation have examined effects on the lining of the gut. This is preclinical evidence.
Skin inflammation
Laboratory research has examined inflammatory responses in skin models.
How It Works
Inflammation is controlled largely by a master switch inside cells called NF-κB. When it is activated, the cell starts producing inflammatory messengers called cytokines that recruit immune cells and amplify the response.
The main line of KPV research is that the peptide interferes with that switch, dialing down cytokine production rather than blocking any single messenger. In plain terms, it is studied as a volume control on the inflammatory signal rather than an off switch.
Current Areas of Research
Inflammatory signaling
How the NF-κB switch is turned down and what happens to cytokine output.
Gut lining integrity
Whether the barrier between the intestine and the body holds up better in inflammation models.
Skin inflammation
Responses in laboratory models of inflamed skin.
Structure and function
Why such a small fragment retains activity at all.
Melanocortin biology
How anti-inflammatory effects separate from pigmentation effects.
What Does the Evidence Actually Say?
Limited — findings come from cell culture and animal models of inflammation. Controlled human trials have not been published.
Side Effects & Safety Research
Possible or theoretical
- Modulating inflammatory signaling could theoretically affect immune responses.
Where evidence is insufficient
- Human safety data is not available.
What We Don't Know Yet
- Human clinical evidence is very limited; most data is from cells and animals.
- How the peptide gets into cells is not fully established.
- Stability and how much survives in different research conditions are open questions.
- Long-term effects of modulating inflammatory signaling this way are unknown.
Frequently Asked Questions
Research References
- Brzoska T et al. α-Melanocyte-stimulating hormone and related tripeptides: biochemistry, antiinflammatory and protective effects in vitro and in vivo. Endocrine Reviews, 2008.
- Dalmasso G et al. PepT1-mediated tripeptide KPV uptake reduces intestinal inflammation. Gastroenterology, 2008.
- Kannengiesser K et al. Melanocortin-derived tripeptide KPV has anti-inflammatory potential in murine models of inflammatory bowel disease. Inflammatory Bowel Diseases, 2008.
Key Takeaway
KPV is a three-amino-acid fragment of alpha-MSH studied for its apparent ability to reduce inflammatory signaling without the pigmentation effects of the parent hormone. Most evidence comes from cell-culture and animal models focused on the NF-κB pathway, gut barrier integrity, and skin inflammation. Human data remains very limited, so it is an early-stage area of immunology research.
Related Research
This information is provided for educational purposes only and summarizes current areas of scientific research. It is not medical advice, a treatment recommendation, or an instruction for personal use. Research findings may be preliminary, limited, or subject to change as new evidence becomes available.