KPV/anti-inflammatory/peptide synthesis intermediate

Description

KPV is a small bioactive tripeptide sequentially composed of three amino acids: lysine (Lys), proline (Pro), and valine (Val), with the single-letter abbreviation K-P-V. Chemically, it corresponds to the C-terminal fragment at positions 11–13 of the human endogenous hormone α-melanocyte-stimulating hormone (α-MSH), so it is also denoted as α-MSH (11-13). Its free acid has a molecular formula of C₁₆H₃₀N₄O₄ and a molecular weight of approximately 342.43. It is commonly supplied in the acetate form on the market for better stability. The finished product is generally a white to off-white lyophilized powder with good water solubility and biocompatibility. Thanks to its small molecular size and simple structure, it is easy for transmembrane transport and formulation incorporation.

Compared with its parent hormone α-MSH, KPV achieves a clever "functional separation". It retains the core anti-inflammatory and immunomodulatory activities of α-MSH while having almost no melanogenic effect, so it does not cause burdens such as skin pigmentation. This is the key reason why it attracts attention among active peptide raw materials. As a fine raw material produced by peptide synthesis processes, this product is available in common specifications ranging from 1 mg, 5 mg, 10 mg, 50 mg, 100 mg up to gram scales, with a typical purity of 98%–99% (HPLC). It is recommended to store the powder sealed at −20°C in a dark and dry environment, and it remains stable at room temperature during short-term conventional transportation.

Key Effects

The core function of KPV lies in regulating the "master upstream switch" of inflammation: after entering cells, it inhibits the activation of the NF-κB inflammatory signaling pathway and reduces the production of multiple pro-inflammatory factors at the transcriptional level, instead of merely blocking a single inflammatory mediator. Meanwhile, it can be actively taken up by the PepT1 transporter highly expressed at inflammatory sites, accumulating relatively in inflamed areas and exhibiting a certain "lesion-targeting" property. Overall, its activities can be summarized into multiple aspects including anti-inflammation, immunomodulation, barrier repair, as well as moderate antioxidant and antibacterial effects. It is a multifunctional active peptide raw material characterized by "regulation rather than simple suppression".

Anti-inflammatory and soothing: Downregulates pro-inflammatory cytokines such as TNF-α, IL-1β, IL-6 and IL-8, inhibits excessive activation of macrophages and mast cells and the release of inflammatory mediators including nitric oxide, helping relieve inflammatory symptoms such as redness, swelling, heat and itching.

Immunomodulation: Participates in regulating the balance of immune cells, reduces damage to autologous tissues caused by excessive immune responses, and helps maintain a stable state of the immune system.

Skin barrier repair: Promotes the proliferation and migration of keratinocytes, assists in repairing damaged barriers, and improves skin conditions such as dryness, sensitivity and fragility.

Antioxidation and anti-photoaging: Reduces free radical damage to structures such as collagen, and helps delay photoaging signs including wrinkles and sagging.

Allergy relief: Alleviates allergic discomforts such as itching and redness by inhibiting mast cell degranulation and reducing histamine release.

Mucosal barrier maintenance: Studies have shown its potential to enhance epithelial and mucosal integrity and regulate tight junctions, which is protective for mucosal barriers such as the intestinal barrier.

Auxiliary antibacterial effect: It exerts certain inhibitory effects on some microorganisms localized on the skin and mucous membranes, and can serve as an auxiliary research subject in the field of anti-infection.

Applications

Leveraging the combined properties of "anti-inflammation + repair + immune regulation", the applications of KPV mainly revolve around inflammation-related scientific research and formulation development, covering areas such as biomedical research, functional skin care and mucosal health. It can be used as a peptide reagent for mechanism and model studies by research institutions and corporate R&D departments, and also as an active ingredient for formulation exploration of related conceptual products. In practical development, to address the problem that small peptides are prone to enzymatic degradation and have a short half-life, delivery systems such as nanoparticles, hydrogels and liposomes are commonly adopted in the industry to improve their stability and utilization efficiency.

Research in inflammatory bowel disease: This is an area with relatively concentrated evidence. KPV is frequently applied in preclinical models of intestinal inflammation including ulcerative colitis and Crohn's disease. It is mostly loaded in carriers such as hyaluronic acid nanoparticles and chitosan/alginate hydrogels for targeted delivery research to observe its effects on alleviating mucosal inflammation and promoting mucosal healing.

Skin care raw material for problematic and sensitive skin: Applied in formulation development for inflammatory skin conditions such as eczema, dermatitis, psoriasis and acne, as well as active addition in functional skin care products including soothing, repairing and stabilizing serums, creams and facial masks.

Wound and skin repair: In research models of chronic wounds such as pressure ulcers and diabetic wounds, it is used to explore its potential to regulate local immunity and accelerate epithelial regeneration and tissue repair.

Special skin research topics: After modification with carriers like liposomes, it can be applied in research on vitiligo synergistic therapy, providing protection for melanocytes and assisting regulation of related synthetic processes.

Auxiliary research on mucosa and local infection: Used for auxiliary formulation and subject research in skin and mucosal infections, as well as oral and intimate care.

Scientific research reagents and custom peptides: Available as reference standards and control samples for universities, hospital laboratories and biomedical enterprises to conduct research on peptide mechanisms, delivery systems and pre-new drug development. Custom products with different purities, specifications and acetate forms can also be provided.