Melanotan 2 is strictly for laboratory research and is commonly employed in the following investigational areas:

Metabolic Homeostasis & Thermogenesis

Central administration of MT-2 is utilized as a chemical probe to study the suppression of caloric intake and the stimulation of energy expenditure. Researchers employ this peptide to quantify the activation of MC3R and MC4R in the hypothalamus, assessing its ability to increase uncoupling protein 1 (UCP1) levels in brown adipose tissue and modulate lipid mobilization.

Melanogenesis & Dermatological Assays

In in vitro skin models and melanocyte cultures, MT-2 is used to observe the direct stimulation of MC1R. Assays focus on quantifying eumelanin production, evaluating cellular photoprotection against UV-induced oxidative stress, and tracking the upregulation of PTEN pathways.

Neuromodulation and Addiction Pathways

Because MT-2 activates central MC4Rs, it is heavily utilized in neurobiological models of reward and addiction. Researchers investigate how melanocortin receptor agonism alters dopamine signaling in the nucleus accumbens, frequently studying its efficacy in blunting binge-like ethanol intake and altering reward-seeking behaviors.

Peripheral Nerve Regeneration

Experimental models evaluate MT-2 for its neuroprotective properties. Studies involve measuring the recovery of sciatic nerve function and the preservation of sensory nerve conduction velocity following mechanical injury or neurotoxic chemical exposure (e.g., cisplatin models).

Pathway / Mechanistic Context

The primary mechanism of action for Melanotan 2 in research settings involves the activation of G protein-coupled melanocortin receptors.

• Receptor Binding: MT-2 binds non-selectively to the extracellular domains of MC1R, MC3R, MC4R, and MC5R.
• Signal Transduction: Activation at these sites couples primarily to the Gs-alpha subunit, directly stimulating adenylate cyclase.
• Resulting Flux: This stimulation leads to a rapid intracellular accumulation of cyclic AMP (cAMP) and the subsequent activation of Protein Kinase A (PKA). Depending on the specific tissue (e.g., melanocytes via MC1R or hypothalamic neurons via MC4R), this cAMP/PKA cascade triggers distinct downstream transcription factors, ultimately driving either melanin synthesis enzymes (tyrosinase) or altering metabolic and anorexigenic neuropeptide expression.

Preclinical Research Summary

Published preclinical literature documents investigations of Melanotan 2 across multiple experimental models for pathway characterization:

• Obesity and Metabolism: Studies in diet-induced obese rats show that chronic MT-2 administration safely bypasses leptin resistance, yielding unabated anorexic responses, sustained oxygen consumption, and reduced visceral adiposity without altering lean mass.
• Addiction Models: Research in murine models of alcoholism indicates that MT-2 administration synergistically augments the effectiveness of opioid antagonists (like naltrexone) in blunting binge-like ethanol intake, highlighting cross-talk between the melanocortin and opioid systems.
• Cellular Survival: In vitro and ex vivo assays demonstrate that MT-2 signaling promotes peripheral nerve regeneration and acts as an anti-inflammatory agent by decreasing pro-inflammatory cytokine levels and altering cellular stress responses.

Form & Analytical Testing

This material is produced via robust chemical synthesis and supplied as a lyophilized (freeze-dried) powder.

• Lyophilization: Removes water content under vacuum to maintain compound integrity and extend shelf-life.
• Identity Verification: Each lot undergoes Mass Spectrometry (MS) to confirm molecular weight and identity.
• Purity Verification: High-Performance Liquid Chromatography (HPLC) is performed to ensure the product meets the ≥99% purity standard required for reproducible research data.

Referenced Citations

References are provided for informational purposes only and are not clinical claims.

• Navarro, M., et al. (2015). Evidence that Melanocortin Receptor Agonist Melanotan-II Synergistically Augments the Ability of Naltrexone to Blunt Binge-Like Ethanol Intake in Male C57BL/6J Mice. Alcoholism: Clinical and Experimental Research, 39(8), 1425-1433.https://pubmed.ncbi.nlm.nih.gov/26108334/
• Li, P., et al. (2013). Melanocortin 4 Receptors in the Paraventricular Nucleus Modulate the Adipose Afferent Reflex in Rat. PLoS ONE, 8(11), e80295.https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0080295
• Chai, B., et al. (2009). Melanocortin-4 receptor activation inhibits c-Jun N-terminal kinase activity and promotes insulin signaling. Peptides, 30(6), 1098-1104.https://pubmed.ncbi.nlm.nih.gov/19463742/
• Wu, J. C., et al. (2020). Topical MTII Therapy Suppresses Melanoma Through PTEN Upregulation and Cyclooxygenase II Inhibition. International Journal of Molecular Sciences, 21(2), 681. https://doi.org/10.3390/ijms21020681

• Stable at room temperature for up to 90 days. For long-term storage, keep at -20°C (-4°F) or colder.
• Once mixed with a solvent (e.g., bacteriostatic water), the solution must be stored at 4 °C (39°F) and utilized within 30 days. Avoid repeated freeze-thaw cycles, as this degrades the peptide structure.

RESEARCH USE ONLY

This product is intended strictly for laboratory research use only. It is not for human or veterinary use. It is not intended for diagnosis, treatment, cure, or prevention of any disease. All purchases are subject to our Terms of Service and Purity Guarantee.

No COAs available for this product.