KPV

KPV is the tripeptide Lys-Pro-Val, which corresponds to the last three amino acids (positions 11–13) of α-MSH. Despite its small size, it is a molecule that has been extensively studied in the field of immunology.

Mechanism of action under investigation

Research suggests that KPV is associated with the suppression of inflammatory signals. A recurring theme is its influence on the NF-κB pathway, a key regulator in inflammatory processes. Because KPV lacks the pigmentation-regulating part of α-MSH, researchers can study its anti-inflammatory properties without the effect on pigmentation — one of the reasons why this particular fragment is of particular interest.

This description relates to the mechanism of action as studied in research and does not constitute evidence of efficacy in humans.

A distinctive feature of KPV is that it retains the biological activity associated with inflammation without the pigmentation effect of full-length α-MSH. This is valuable to researchers, as it allows them to study one function without the other. Furthermore, its small, well-defined structure makes it highly reproducible in the laboratory. This combination of preserved activity and a clear structure explains the continuing scientific interest in KPV.

KPV is derived from the extensively studied α-MSH and is being investigated in the literature within the fields of immunology and the biology of inflammation.

• Research focus: modulation of inflammatory signalling (including the NF-κB pathway).
• Research focus: immune balance without any effect on pigmentation.
• Research focus: gut- and tissue-related inflammatory models (preclinical).

Status and context

KPV is not authorised as a medicinal product and is supplied solely as research material. As it influences inflammatory and immune processes, a pure starting material and a controlled research design are essential for reliable, traceable results. For broader immunological research, KPV is sometimes examined alongside Thymosin Alpha-1.

As KPV is derived from an endogenous signalling molecule, it is an attractive model for studying how small peptide fragments influence inflammatory processes. Its relationship with the extensively documented α-MSH places it within a broad and well-established field of research, which facilitates comparisons between studies. A pure starting material, with documentation provided for each batch, remains the foundation for reliable work.

KPV is supplied as a lyophilised powder and reconstituted in the laboratory using bacteriostatic water. The steps below describe only the laboratory procedures for research purposes.

1. 1Allow the vial and the bacteriostatic water to reach room temperature.
2. 2Wipe the rubber stoppers of both vials with an alcohol wipe.
3. 3Allow the bacteriostatic water to run slowly down the side of the vial; do not direct it straight onto the powder.
4. 4Gently swirl the vial until everything has dissolved; do not shake.
5. 5Store the solution in the fridge and label it with the date and batch number.

You can find supplies such as bacteriostatic water, insulin syringes and alcohol wipes under ‘Lab & Accessories’. This is a laboratory instruction and does not constitute dosage advice for consumption.

Working with a small peptide

As a small, soluble tripeptide, KPV is practical to work with. Calculate the concentration accurately, record the calculation for each experiment and work efficiently, so that results remain comparable and traceable between sessions.

Prepare only the amount you need in the short term and store the rest in the fridge straight away; make a note of the preparation date so that you can estimate the rate of degradation between experiments. Work quickly to minimise the degradation of the peptide.

Store KPV in lyophilised (powder) form in a cool, dark place to ensure maximum stability.

Practical storage tips

• Powder form: freezer (-20 °C) for long-term storage; fridge (2–8 °C) for short-term storage.
• After reconstitution: store refrigerated (2–8 °C) and use within a few weeks.
• Avoid direct light, heat and repeated temperature changes.
• Write the reconstitution date and batch number on the vial.

Careful storage preserves the purity and integrity of the research material.

Consistent, cold and dark storage ensures reliable, reproducible measurement results across experiments. Check the solution for clarity before use.