Enamel-Binding Antibacterial Peptide Compositions for Remineralization
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Solution Overview
Problem
Current oral care products are inadequate in preventing and treating dental caries due to issues with antibacterial adhesion, sensitivity to oxidative damage, and toxicity, and they fail to effectively induce mineralization of tooth surfaces.
Innovation Solution
Development of peptides with high affinity for tooth enamel that possess both antimicrobial and mineralizing properties, such as histatin 5 segments and phosphoserine domains, to prevent bacterial adhesion, reduce demineralization, and promote remineralization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical surface modifications such as polyethylene glycol and zwitterion are used as nonspecific coatings, then anti-adhesive properties are demonstrated, but low surface densities and sensitivity to oxidative damage result in failure of antibacterial adhesion for long-term applications
Solution Approach 1:
The patent changes the chemical parameters of the surface coating by using phosphoserine-containing peptides instead of conventional polyethylene glycol or zwitterion coatings. This parameter change provides both antibacterial adhesion and oxidative stability, resolving the contradiction between reliability and compositional stability.
Solution Approach 2:
The invention creates a composite surface coating system that combines phosphoserine residues with peptide structures. This composite approach integrates the adhesive properties needed for antibacterial function with the chemical stability required for long-term performance, overcoming the limitations of single-material coatings.
2Reliability
If antibiotics are used to prevent caries pathogen biofilm formation, then antibacterial activity is achieved, but potential to result in antibiotic resistance and subsequent side effects occurs
Solution Approach 1:
The patent employs short peptides with antibacterial activity that can be continuously applied through oral care products. These peptides serve as disposable, renewable antibacterial agents that do not accumulate in the body, thereby avoiding the development of resistance while maintaining continuous protective activity.
Solution Approach 2:
The phosphoserine-containing peptides act as intermediary substances that provide antibacterial protection through a different mechanism than traditional antibiotics. They interfere with bacterial adhesion and biofilm formation rather than killing bacteria directly, reducing selective pressure for resistance development.
3Reliability
If fluorides are used to show certain antibacterial activities, then antibacterial effect is achieved at very high concentrations, but difficulty to continuously sustain their topical concentrations on the tooth and toxicity concerns arise
Solution Approach 1:
The invention changes the concentration parameter by using peptides that are effective at much lower concentrations than fluorides. The phosphoserine-containing peptides achieve antibacterial and anti-adhesive effects at trace levels, eliminating the need for high concentrations and associated toxicity concerns.
4Reliability
If fluoride- and calcium phosphate-based reagents such as casein phosphopeptide-amorphous calcium phosphate are used to induce mineral deposits on tooth surfaces, then mineralization is promoted, but the deposits do not actually become part of the enamel microstructure
Solution Approach 1:
The phosphoserine-containing peptides serve as molecular intermediaries that facilitate the integration of mineral deposits into the enamel microstructure. The phosphoserine residues interact with both the peptide and the mineral components, enabling proper incorporation of calcium phosphate deposits into the enamel matrix rather than forming separate surface layers.
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 peptides effectively bind to tooth surfaces, reducing bacterial biofilm formation, preventing demineralization, and promoting mineralization, thereby enhancing oral health and reducing the risk of dental caries.
Implementation Method 1
Peptides that bind with high affinity to oral cavity surfaces, such as tooth enamel
Implementation Method 2
inducing its remineralization
Data Source
AI summary
Peptides that bind with high affinity to oral cavity surfaces, such as tooth enamel, have been discovered. The peptides exhibit antibacterial and mineralizing abilities, and are useful in many aspects of oral care. A preferred peptide includes the amino acid sequence AKRHHGYKRKFH-SpSp. The peptides can be included in oral care compositions such as toothpastes and mouthwashes. The oral care compositions can be used in methods to treat or prevent diseases or conditions induced by acidophilic oral bacteria. Exemplary methods include reducing or preventing tooth decay or demineralization, biofilm or dental plaque formation, and/or bacterial adhesion to a tooth surface; and promoting mineralization of teeth surfaces.