Description

Product Overview

KPV Peptide (Lys-Pro-Val) is an extensively studied biomolecule in the fields of molecular biology, gastroenterology, and immunology. Derived from the endogenous neuroimmunomodulatory peptide α-MSH, this specific tripeptide sequence retains significant biological activity while lacking the melanotropic pigmentary effects associated with full-length melanocortin agonists.

Researchers utilize KPV Peptide primarily to evaluate its interaction with peptide transporters, its modulation of nuclear transcription factors, and its structural role in preserving cellular membrane architecture.

At Appex Peptide Lab, KPV Peptide is synthesized using advanced solid-phase peptide synthesis (SPPS) protocols followed by multi-stage purification. The resulting lyophilized powder exhibits excellent solubility and stability, making it suitable for diverse experimental media, automated assay platforms, and microfluidic research systems. Its high purity and structural consistency support reproducible laboratory investigations.

Key Research Highlights

• Serves as a truncated analog of α-MSH for investigating non-melanotropic biological pathways.
• Facilitates studies of PepT1-mediated oligopeptide transporter kinetics.
• Utilized to analyze NF-κB nuclear translocation mechanisms.
• Supports structural assays evaluating epithelial cell junction integrity.
• Enables investigation of downstream pro-inflammatory cytokine expression.
• Used to quantify myeloperoxidase (MPO) activity in experimental tissue models.
• Assists in evaluating cell-mediated immune responses within mucosal systems.
• Highly stable lyophilized formulation suitable for long-term laboratory storage.
• Manufactured with high purity to support reliable experimental reproducibility.

Why Researchers Choose This Product

• ≥99% purity verified by High-Performance Liquid Chromatography (HPLC).
• Structural identity confirmed using Electrospray Ionization Mass Spectrometry (ESI-MS).
• Lot-specific Certificate of Analysis (COA) available.
• Lyophilized formulation designed for stable reconstitution.
• Manufactured using validated synthesis and purification methods.
• Free from unnecessary fillers and undeclared additives.
• Available in scalable vial sizes for various research requirements.
• Suitable for universities, biotechnology companies, and pharmaceutical laboratories.

Research Applications

Epithelial Barrier Integrity and Tight Junction Dynamics

Researchers utilize KPV Peptide to investigate epithelial barrier homeostasis using cell monolayer models. Studies commonly measure transepithelial electrical resistance (TEER) and paracellular permeability while examining the localization and expression of tight junction proteins including:

• Zonula occludens-1 (ZO-1)
• Occludin
• Claudin family proteins

These experimental models evaluate cellular responses under chemically or enzymatically induced stress conditions.

Transporter Kinetics and Intracellular Uptake Mechanisms

KPV Peptide has been investigated as a substrate for the proton-coupled oligopeptide transporter PepT1 (SLC15A1). Research examines transporter affinity, intracellular uptake, and peptide transport across epithelial membranes, providing insight into the movement of low-molecular-weight peptides independent of classical receptor-mediated pathways.

Transcriptional Modulation and Cytokine Profiling

Laboratory studies employ KPV Peptide to investigate transcriptional regulation within cultured cells. Researchers commonly evaluate changes in expression of genes associated with:

• Tumor necrosis factor-alpha (TNF-α)
• Interleukin-1 beta (IL-1β)
• Interleukin-6 (IL-6)

These investigations contribute to understanding intracellular signaling and transcriptional regulation.

Neuroimmunology and Melanocortin Receptor Independence

Because KPV shares structural similarity with α-MSH while demonstrating distinct biological characteristics, it is frequently used to investigate signaling pathways that may operate independently of classical melanocortin receptors such as MC1R. These studies help researchers explore alternative intracellular and cell-surface signaling mechanisms.

Product Specifications

Mechanism of Action

The molecular mechanism of KPV Peptide centers on its intracellular activity and interaction with multiple cellular signaling pathways. Unlike its parent peptide, α-MSH, which primarily exerts biological activity through melanocortin G protein-coupled receptors, KPV has been investigated for biological effects that may occur independently of classical melanocortin receptor activation.

One extensively studied mechanism involves the proton-coupled oligopeptide transporter PepT1 (SLC15A1). Experimental evidence suggests that KPV can be transported into epithelial cells through PepT1, providing researchers with a useful model for studying peptide transport, intracellular trafficking, and transporter-mediated uptake.

Following intracellular localization, laboratory investigations have examined KPV’s influence on the NF-κB signaling pathway. Experimental models suggest that KPV may reduce nuclear translocation of the NF-κB p65 subunit, thereby influencing transcriptional activity associated with NF-κB-responsive genes. The precise molecular interactions underlying these observations continue to be investigated.

Additional research has explored KPV’s effects on mitogen-activated protein kinase (MAPK) signaling, including modulation of p38 MAPK and c-Jun N-terminal kinase (JNK) phosphorylation. These pathways are commonly evaluated in studies examining cellular signaling, transcriptional regulation, oxidative stress responses, and epithelial barrier biology.

Because of its small molecular size and well-characterized tripeptide structure, KPV Peptide remains an important research tool for investigating peptide transport, intracellular signaling, transcription factor regulation, epithelial cell biology, and molecular mechanisms governing cellular homeostasis.

For research use only. Not intended for human consumption or clinical use.