MT-1 Nasal Spray
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What is MT-1 Nasal Spray?
Chemical Structure of MT-1 Nasal Spray
MT-1 is a linear peptide consisting of 13 amino acids with the sequence Ac-Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH2, corresponding to the full α-MSH sequence with terminal modifications. Key structural characteristics include:
- Peptide length: 13 amino acids (tridecapeptide) in linear configuration
- Molecular formula: C78H111N21O19S
- Molecular weight: Approximately 1.65 kDa
- Structural type: Linear melanocortin peptide hormone analog
- N-terminal modification: Acetylated serine residue for enhanced stability
- C-terminal modification: Amidated valine for receptor binding optimization
- Core sequence: His-Phe-Arg-Trp tetrapeptide essential for melanocortin receptor recognition
- Formulation: Peptide dissolved in research-grade nasal delivery vehicle with appropriate pH buffering
The linear structure and conserved melanocortin pharmacophore provide selective MC1R receptor activation while the terminal modifications enhance peptide stability and bioavailability in nasal delivery applications.
What Are the Effects of MT-1 Nasal Spray?
Laboratory and preclinical studies have documented the following research applications and observed effects:
Cellular Pathways Studied:
- Melanocortin-1 receptor (MC1R) selective activation and cAMP signaling
- Tyrosinase enzyme induction and melanin biosynthesis pathways
- Adenylyl cyclase activation and protein kinase A (PKA) downstream signaling
- Melanocyte proliferation and differentiation regulatory mechanisms
Mechanisms of Action:
- High-affinity selective binding to MC1R with minimal off-target receptor activation
- Stimulation of melanogenesis through cAMP-dependent transcriptional regulation
- Enhancement of melanocyte dendricity and melanosome distribution
- Modulation of UV-protective responses in skin cell experimental models
Research Applications:
- Melanocortin receptor selectivity and pharmacology studies
- Intranasal peptide delivery and bioavailability research
- Melanogenesis pathway investigation in melanocyte culture systems
- Comparative studies with other melanocortin receptor agonists
Experimental Models:
- In vitro: Primary melanocytes, B16 melanoma cells, MC1R-transfected cell lines
- Ex vivo: Skin explant cultures, nasal epithelial tissue preparations
- In vivo: Laboratory animal models for melanocortin system research and nasal absorption studies
- Biochemical assays: Melanin quantification, cAMP measurements, tyrosinase activity, receptor binding studies
Research findings contribute to understanding melanocortin receptor biology, intranasal peptide delivery mechanisms, melanogenesis regulation, and selective receptor agonist development in controlled laboratory environments.
MT-1 Nasal Spray
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2026-01-20
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2026-01-16
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2026-01-16
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