Self-Assembling Peptides for Tooth Lesion Treatment
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Solution Overview
Problem
Self-assembling peptides used for tooth remineralization often form large structures outside tooth lesions, making it impossible for them to diffuse through small pores and effectively treat subsurface lesions.
Innovation Solution
A method involving a peptide solution that remains in a monomeric form outside the lesion, with a pH adjustment to 8.0 or higher using a volatile compound like ammonia, followed by lyophilization, ensuring the peptides remain monomeric until they reach the lesion where they self-assemble in response to lower pH, facilitating diffusion and remineralization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If self-assembling peptides form large structures outside tooth lesions, then they can provide structural scaffolds for remineralization, but they cannot diffuse through small pores in the hypermineralised plate to reach subsurface lesions
Solution Approach 1:
The peptide assemblies are designed to be dynamic and reversible, transitioning between assembled and disassembled states based on pH conditions. Outside the lesion (higher pH), peptides remain assembled for structural support, while inside the lesion (lower pH), they disassemble to diffuse through pores and reach target sites
Solution Approach 2:
The invention exploits pH as a controlling parameter to regulate peptide self-assembly. By adjusting pH conditions, the peptides can switch between monomeric (diffusible) and assembled (structural) states, allowing them to navigate through tissue pores and then form scaffolds at the target location
2Strength
If self-assembling peptides are delivered in assembled form, then they provide immediate structural support, but they cannot penetrate into subsurface lesions through small pores
Solution Approach 1:
The peptides are pre-assembled into transportable structures that can be delivered to the lesion site. Upon contact with the acidic environment inside the lesion, these pre-assembled structures disassemble, releasing monomeric peptides that can penetrate through pores and reach subsurface areas
3Length of moving object
If peptides remain in monomeric form outside lesions, then they can diffuse through pores effectively, but they do not provide immediate structural scaffolds for remineralization
Solution Approach 1:
The system is designed to be dynamic, with peptides automatically transitioning from monomeric to assembled states based on local pH conditions. This dynamic behavior allows the same peptide population to serve both as diffusible molecules and as structural scaffolds at different locations
Solution Approach 2:
The peptides self-regulate their assembly state in response to pH gradients. They automatically assemble when encountering the appropriate pH conditions inside the lesion, eliminating the need for external control mechanisms and ensuring scaffold formation exactly where needed
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
This approach allows for targeted delivery and effective self-assembly within tooth lesions, minimizing peptide loss and ensuring sufficient concentration for remineralization, thereby treating subsurface lesions and cavities efficiently.
Implementation Method 1
peptides that are capable of undergoing self-assembly at a certain pH
Implementation Method 2
The peptides were designed to form assemblies in response to certain pH, ionic strength and/or temperature conditions
Implementation Method 3
followed by lyophilization
Implementation Method 4
said compound being sufficiently volatile to be removed during lyophilisation
Data Source
AI summary
The invention relates to a method for preparing a composition for treating a tooth lesion, said composition comprising peptides that are capable of undergoing self-assembly at a certain pH. The compositions of the invention are highly suitable for being used in the medical field, in particular for remineralising a tooth lesion such as a subsurface caries lesion.