Modified Gamma-MSH Peptides for Skin Photo-Protection
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Solution Overview
Problem
Current methods for preventing UV damage and skin cancer, such as using lotions with organic compounds, are inadequate due to inefficiencies and improper use, and there is a need for a more effective internal stimulation of skin protection.
Innovation Solution
Development of modified melanocortin 1 receptor (MC1R) peptide ligands, specifically derivatives of γ-MSH, that are more selective, stable, and bioavailable for topical or transdermal delivery to stimulate melanin production and provide internal photo-protection without the need for sunlight exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If modified γ-MSH peptides are used, then selectivity for MC1R and stability are improved, but complexity of peptide modification increases
Solution Approach 1:
The patent applies parameter changes by systematically modifying specific amino acid residues in the γ-MSH peptide sequence (positions 2, 3, 5, 6, 8, 10) to optimize selectivity for MC1R and enhance stability. These targeted parameter changes in the peptide structure resolve the contradiction by improving reliability through controlled modifications rather than comprehensive complexity.
2Object-affected harmful factors
If conventional sunscreen lotions are used, then UV absorption is provided, but effectiveness is reduced due to inadequate application and short duration
Solution Approach 1:
The modified γ-MSH peptides enable self-service protection by directly stimulating melanocytes to produce endogenous melanin, which provides long-lasting internal protection. This eliminates the need for repeated external application of sunscreen lotions, resolving the contradiction between protection effectiveness and duration by making the protective mechanism self-sustaining through biological activation.
Solution Approach 2:
The patent applies preliminary action by pre-stimulating melanin production before UV exposure occurs. The modified peptides activate MC1R receptors in advance, triggering melanin synthesis that provides protective pigmentation prior to and during UV exposure, thereby extending the effective protection duration beyond what conventional lotions can provide.
3Object-generated harmful factors
If γ-MSH is modified for improved selectivity, then side effects are reduced, but bioavailability challenges increase
Solution Approach 1:
The patent resolves this contradiction by carefully selecting amino acid substitutions that simultaneously improve MC1R selectivity (reducing side effects) and maintain or enhance peptide stability and bioavailability. Specific parameter changes in the peptide sequence are optimized to balance selectivity improvements with bioavailability requirements.
Solution Approach 2:
The modified γ-MSH peptides can be formulated as composite delivery systems or conjugates that enhance bioavailability while maintaining selectivity. The patent explores composite approaches to deliver the modified peptides effectively to target tissues, resolving the bioavailability challenge without compromising the reduced side effect profile.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The MC1R peptide ligands effectively stimulate melanin production, offering enhanced protection against UV damage and reducing the risk of skin cancer with improved stability and selectivity for the MC1R receptor, providing a more effective and long-lasting solution compared to traditional sunscreens.
Implementation Method 1
The melanocortin 1 receptor (MC1R), also known as a melanocyte-stimulating hormone receptor, a melanin-activating peptide receptor, or a melanotropin receptor, is a protein that can bind to MSH
Implementation Method 2
eumelanin, which is a type of melanin that can protect the skin from damage caused by UV radiation in sunlight
Data Source
Figure 1~2
Figure 3
AI summary
A gamma-melanocyte stimulating hormone (γ-MSH) derivative having improved stability, selectivity and bioavailabilty. The γ-MSH derivative is selective for the melanocortin-1 receptor (MC1 R) and is deliverable to skin cells via topical or transdermal delivery. The γ-MSH derivative is made up of naturally occurring amino acids for stimulating melanin from within for photo- protection of human skin against ultraviolet radiation damage.