Description
Nonapeptide‑1 is a nine amino acid peptide that was first developed in the 1990s, sparking research interest due to its potential to inhibit the synthesis of melanin, the main pigment in mammals responsible for color in the skin, fur, hair, eyes, etc. The research on Nonapeptide‑1 is still in its early stages, and much is still unknown about its potential and mechanisms of action.
Studies on Nonapeptide‑1 have primarily focused on its potential to inhibit melanin production by interfering with the signaling pathway involved in melanogenesis. Specifically, Nonapeptide‑1 is thought by researchers to possibly inhibit the melanocortin‑1 receptors, which may prevent the action of melanocyte‑stimulating hormones and the activation of the enzyme tyrosinase, which is necessary for the synthesis of melanin. By doing so, Nonapeptide‑1 may have a reducing potential on hyperpigmentation and skin tone in animal studies. Nevertheless, further studies are needed to fully understand the potential of this peptide.
Chemical Makeup
Molecular formula: C₆₁H₈₇N₁₅O₉S
Molecular weight: 1206.5 g/mol
Research and Clinical Studies
Researchers have investigated large libraries of peptide variants to find antagonists of the melanocortin‑1 receptor (MC1R), which plays a key role in melanogenesis. Nonapeptide‑1 emerged as one of the most potent candidates with reported high affinity for MC1R. In in‑vitro studies, cells exposed to Nonapeptide‑1 showed downregulation of MC1R and reduced expression of tyrosinase and related proteins involved in melanin synthesis. One pilot clinical study also reported apparent reductions in melasma severity and mean melanin index over an extended period.
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