Melanotan II receptor research provides the mechanistic foundation for understanding this synthetic alpha-MSH analog as a research tool. Melanotan II is a non-selective melanocortin agonist with measurable activity at multiple receptors in the melanocortin family, including MC1R, MC3R, MC4R, and MC5R. As the receptor pharmacology component of the Melanotan II research cluster, this article reviews the published literature on Melanotan II binding profiles across the melanocortin receptor family, with a focus on MC1R and MC4R binding.
Melanotan II Receptor Research: MC1R and MC4R Binding Studies
Melanotan II · Published April 9, 2026 · Updated May 18, 2026 · 7 min read
Quick Answer
Melanotan II receptor research covers binding profiles across MC1R, MC3R, MC4R, and MC5R, characterizing this cyclic peptide as a broad-spectrum melanocortin agonist. Studies examine receptor activation, downstream signaling, and the multi-receptor pharmacology underlying Melanotan II research applications. For research use only, not for human consumption.
Research Use Only. All products are strictly for research use only (RUO). Not for human consumption. Products on this site are not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the FDA. By purchasing, you agree that you are a qualified researcher and that products will be used solely for in-vitro research purposes.
Frequently Asked Questions
What is Melanotan II in research contexts?
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Melanotan II is a synthetic cyclic heptapeptide non-selective melanocortin receptor agonist that binds MC1R, MC3R, MC4R, and MC5R. It is studied in preclinical research for pigmentation, central appetite signaling, and melanocortin pharmacology.
What is Melanotan II's binding profile across MCRs?
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Melanotan II binds MC1R, MC3R, MC4R, and MC5R with varying affinities, producing the broad melanocortin agonism that distinguishes it from selective analogs. MC1R drives pigmentation, MC4R drives central effects, MC5R contributes peripheral metabolic effects.
How is Melanotan II receptor binding characterized in research?
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Methods include radioligand binding assays with competitive displacement, cAMP response assays in receptor-expressing cell lines, beta-arrestin recruitment assays, and integrated functional assessment across the four melanocortin receptor subtypes.
Is Melanotan II approved for human use?
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No. Melanotan II is not approved by the FDA for any human therapeutic use. It is supplied strictly for in-vitro and preclinical research purposes by qualified investigators.
Glossary
Key terms used in this article.
- MC1R
- Melanocortin 1 receptor, the GPCR on melanocytes mediating pigmentation effects of melanocortin agonists.
- MC4R
- Melanocortin 4 receptor, primarily expressed in the hypothalamus and central nervous system, regulating appetite and sexual behavior.
- MC5R
- Melanocortin 5 receptor, broadly distributed and implicated in exocrine function and lipolysis.
- Cyclic Peptide
- A peptide whose backbone or side chains are joined into a ring, conferring increased stability and receptor selectivity.
- Bremelanotide
- A cyclic melanocortin agonist analog of Melanotan II with reduced MC1R activity, studied for central effects.
- Radioligand Binding
- A pharmacological assay using radiolabeled ligands to measure receptor affinity through saturation and displacement experiments.
- MC3R
- Melanocortin 3 receptor, expressed in CNS and peripheral tissues with roles in energy homeostasis and immune modulation.
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Research Use Only. All products are strictly for research use only (RUO). Not for human consumption. Products on this site are not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the FDA. By purchasing, you agree that you are a qualified researcher and that products will be used solely for in-vitro research purposes.
