Tetrapeptide Derivative Composition for Post-Inflammatory Hyperpigmentation
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Solution Overview
Problem
Existing skin whitening and anti-inflammatory compositions do not effectively address post-inflammatory hyperpigmentation (PIH) and often have cytotoxicity or skin irritation issues, failing to simultaneously inhibit melanin synthesis and inflammatory cytokines like IL-6 and TNF-α.
Innovation Solution
A peptide derivative represented by Formula (I), such as R1-Pro-Lys-Glu-Lys-R2, with specific substituents, is designed to down-regulate α-MSH expression, inhibit melanin generation, and reduce IL-6 and TNF-α expression, formulated into cosmetic or pharmaceutical compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glucocorticoids or other compounds are used to control inflammatory reaction and inhibit melanin synthesis, then anti-inflammatory and whitening effects are achieved, but cytotoxicity and skin irritation occur
Solution Approach 1:
The patent combines multiple functional moieties into a single peptide derivative molecule: a melanogenesis-inhibiting group (arbutin, kojic acid, or ascorbic acid), an anti-inflammatory peptide sequence (Pro-Lys-Glu-Lys), and optionally a niacin or tranexamic acid component. This composite structure enables simultaneous anti-inflammatory and whitening effects while reducing cytotoxicity compared to using separate compounds
Solution Approach 2:
The invention merges three distinct functional components into one integrated molecule: (1) the peptide sequence Pro-Lys-Glu-Lys for anti-inflammatory activity, (2) melanogenesis-inhibiting moieties (arbutin/kojic acid/ascorbic acid) for whitening, and (3) niacin or tranexamic acid for additional skin benefits. This consolidation achieves multiple therapeutic effects in a single compound with reduced side effects
2Ease of manufacture
If single compounds are used for anti-inflammatory or melanin inhibition, then specific function is achieved, but comprehensive treatment of post-inflammatory hyperpigmentation is insufficient
Solution Approach 1:
The peptide derivative is designed with multi-functionality to address all aspects of post-inflammatory hyperpigmentation: the Pro-Lys-Glu-Lys sequence provides anti-inflammatory activity, the arbutin/kojic acid/ascorbic acid moieties inhibit melanogenesis, and niacin/tranexamic acid components regulate melanin transport and provide antioxidant effects. A single compound thus performs multiple therapeutic functions
Solution Approach 2:
By integrating multiple functional groups into one peptide derivative structure, the invention creates a versatile agent that can simultaneously control inflammation, inhibit melanin synthesis, and regulate melanin distribution, making it suitable for comprehensive PIH treatment
3Quantity of substance
If existing whitening compositions focus on inhibiting tyrosinase activity, then melanin production is reduced, but inflammatory cytokines are not suppressed
Solution Approach 1:
The peptide derivative integrates melanogenesis-inhibiting moieties (arbutin, kojic acid, or ascorbic acid) with the anti-inflammatory peptide sequence Pro-Lys-Glu-Lys, creating a dual-function molecule that simultaneously reduces melanin production and suppresses inflammatory cytokines like IL-6 and TNF-α
Solution Approach 2:
The invention merges tyrosinase inhibition capability with anti-inflammatory activity in one molecule, where the arbutin/kojic acid/ascorbic acid components target melanin synthesis while the Pro-Lys-Glu-Lys sequence suppresses inflammatory responses, achieving comprehensive PIH treatment
Data Source
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AI summary
A peptide derivative and a cosmetic composition or pharmaceutical composition and use thereof. The peptide derivative has the following general formula: R1-Pro-Lys-Glu-Lys-R2. The peptide derivative is obtained by means of covalent binding of niacin, tranexamic acid or kojic acid with a peptide, has the effects of relieving skin inflammation reaction and inhibiting melanin generation, and can be used in the fields of cosmetics or medicines for anti-inflammation as well as whitening and freckle-removing of skin, especially for improving post-inflammation hyperpigmentation.