Abstract The Melanotan 1 10mg peptide pen features a high-purity synthesis of Afamelanotide ([Nle4, D-Phe7]-$\alpha$-MSH), a linear, synthetic analogue of the endogenous alpha-Melanocyte Stimulating Hormone. Unlike its cyclic counterpart (Melanotan 2), Melanotan 1 exhibits a highly specific affinity for the Melanocortin-1 Receptor (MC1R), with significantly reduced binding to the central MC4 receptors responsible for appetite and arousal. This 10mg formulation is the premier reagent for dermatological research focusing on photoprotection, melanogenesis, and the repair of UV-induced DNA damage. It allows researchers to investigate the upregulation of eumelanin synthesis as a “biological shield” against actinic damage without the confounding variables of sympathomimetic or aphrodisiac side effects.

Mechanism and Research Interest

Primary Biological Pathway: Eumelanin Synthesis via MC1R

The fundamental mechanism of Melanotan 1 is the selective agonism of the MC1 receptor on melanocytes.

Upon binding, it activates the adenylate cyclase-cAMP-PKA signalling cascade, leading to the phosphorylation of CREB (cAMP response element-binding protein). This induces the transcription of MITF (Microphthalmia-associated Transcription Factor), the master regulator of pigmentation. Research utilising the 10mg pen quantifies the downstream upregulation of tyrosinase enzymes, which shift the cell’s production from pheomelanin (red/yellow, non-protective) to eumelanin (brown/black, photoprotective), mimicking the physiological response to UV radiation without actual UV exposure.

Secondary Research Finding: DNA Repair and NER Pathways

Melanotan 1 is extensively researched for its role in genomic stability. Beyond pigmentation, MC1R activation has been observed to enhance Nucleotide Excision Repair (NER) mechanisms. Researchers use the 10mg format to treat keratinocytes exposed to UVB radiation, measuring the rate of cyclobutane pyrimidine dimer (CPD) removal. The hypothesis is that Melanotan 1 acts as a “survival factor,” enhancing the cell’s ability to repair photolesions and reducing the apoptotic rate following solar trauma.

Tertiary Research Finding: Anti-Inflammatory Properties

MC1 receptors are also expressed on various immune cells, including macrophages and neutrophils. Studies are investigating the non-pigmentary effects of Melanotan 1, specifically its ability to suppress the release of pro-inflammatory cytokines (TNF-$\alpha$, IL-1) in models of cutaneous inflammation (such as Erythropoietic Protoporphyria or solar urticaria). The 10mg pen allows for precise dose-ranging to separate these anti-inflammatory effects from the pigmentary response.

Long-term Genomic and Safety Observations

A key distinction of Melanotan 1 is its safety profile compared to Melanotan 2. Genomic and physiological monitoring in long-term studies confirms that Melanotan 1 does not significantly cross the blood-brain barrier to activate MC4 receptors in the hypothalamus. Consequently, it does not induce the gene expression patterns associated with sexual arousal, anorexia, or elevated sympathetic tone (blood pressure spikes), making it a specific tool for peripheral dermatological study.

Product Specifications

• Purity: Validated at >98+% via High-Performance Liquid Chromatography (HPLC). We strictly control the synthesis to ensure the linear peptide chain remains intact and free from D-Phe deletion by-products.

• Appearance: The 3ml pen contains a clear, colourless, sterile liquid.

• Precision: The pen delivery system ensures consistent volumetric dosing, which is essential for establishing the dose-dependent curve of tyrosinase activity in in vitro melanocyte cultures.

• Storage: The product must be stored at 2∘C to 8∘𝐶.

Storage and Shipping Guidelines

Refrigeration and Shelf Life

The Melanotan 1 10mg Pen is a linear peptide and is sensitive to enzymatic degradation. It must be refrigerated ($2^{\circ}C$ to $8^{\circ}C$). The shelf life is 12 months in the sealed state. Once the pen is accessed, the bacteriostatic environment preserves the solution for 28 days. Researchers should note that peptide oxidation can reduce affinity for the MC1R; therefore, utilising the reagent within the 28-day window is standard practice for reliable data.

Shipping Stability

We utilise medical-grade thermal packaging. The peptide is stable for up to 72 hours at ambient UK temperatures. However, to minimise conformational changes, we recommend selecting the fastest available shipping option.

Freezing Warning

Do not freeze. Freezing can cause the peptide to precipitate out of the solution. Upon thawing, re-solubilisation may be incomplete, leading to non-homogenous dosing. This variability can drastically skew quantitative data regarding melanin density. A frozen pen should be discarded.

Why Choose the Peptide Pro 3ml Pen Format?

The Melanotan 1 10mg Pen is the definitive tool for Specific Photoprotection Research.

While Melanotan 2 is often used for broad melanocortin research, its non-selectivity introduces variables (nausea, arousal) that confound purely dermatological data.

Our Melanotan 1 pen provides a high-purity source of the specific MC1R agonist. This ensures that observed cellular changes are due to melanocyte stimulation and DNA repair pathways, not central nervous system activation.

For researchers investigating related melanocortin pathways, we recommend examining:

• Melanotan 2 10mg: https://www.peptidepro.co.uk/product/melanotan-2-10mg/ (For comparative studies on MC4R/CNS activation).

• PT-141 10mg: https://www.peptidepro.co.uk/product/pt-141-10mg/ (For research strictly focused on sexual dysfunction/MC4R).

Disclaimer

This product is strictly for Research Use Only (RUO). It is not intended for human consumption, injection (e.g., for cosmetic tanning), therapeutic use (e.g., for EPP or Vitiligo), or diagnostic procedures. The information provided is for educational and scientific reference only. Purchase is restricted to verified research institutions and qualified individuals. Any evidence of intended misuse for human application will result in immediate order cancellation and blacklisting, in compliance with UK research chemical regulations.