PNC-27 vs Nonapeptide-1
Side-by-side comparison of key properties, dosing, and research.
Immune Support
PNC-27Skin & Cosmetic
Nonapeptide-1- Summary
- PNC-27 is a synthetic peptide derived from the p53 tumor suppressor protein, containing both an HDM2-binding domain and a transmembrane penetratin sequence. It selectively kills cancer cells by binding MDM2/HDM2 overexpressed on the plasma membrane of malignant cells, inducing membranolysis without harming normal cells.
- Nonapeptide-1 is a synthetic 9-amino acid peptide that inhibits melanin production by blocking α-MSH (alpha-melanocyte stimulating hormone) receptor binding. Used in cosmetic formulations for skin lightening and evening skin tone, it is particularly effective for UV-induced and hormonal hyperpigmentation.
- Half-Life
- Not well established; estimated minutes to hours
- Not applicable (topical)
- Admin Route
- Intravenous (research), Intraperitoneal (research)
- Topical
- Research
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- Typical Dose
- Not established for humans; research doses vary by cell line and model
- 0.05–0.5% concentration in formulation
- Frequency
- Not established for human use
- Twice daily
- Key Benefits
- Selective cytotoxicity against cancer cells overexpressing HDM2/MDM2
- Spares normal cells lacking surface HDM2 expression
- Membranolytic mechanism bypasses intracellular resistance pathways
- Demonstrated activity against breast, pancreatic, leukemia, and melanoma cell lines
- Potential for combination with conventional chemotherapy
- Novel non-genotoxic anticancer mechanism
- Inhibits UV-induced tanning and hyperpigmentation
- Reduces hormonal melasma
- Evens skin tone at receptor level
- Well-tolerated with minimal irritation
- Complementary to tyrosinase inhibitors for enhanced brightening
- Reduces post-inflammatory hyperpigmentation
- Side Effects
- Limited human clinical data; largely in vitro and animal studies
- Potential immunogenic reactions (foreign peptide)
- Systemic toxicity at high doses not well characterized
- Unknown interactions with current chemotherapy agents
- Generally very well-tolerated
- Rare contact sensitivity in susceptible individuals
- Theoretical risk of excessive depigmentation with prolonged high-concentration use
- Stacks With
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