Calcium-Embedded Polypeptide Substrates for Diverse Crystal Morphologies
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Solution Overview
Problem
Elastin-like polypeptide (ELP) membranes are limited in their ability to form varied crystal morphologies and integrate with underlying crystal structures, such as bone and dental enamel, effectively.
Innovation Solution
The development of polypeptide substrates embedded with calcium ions, which can form crystal structures both inside and outside the membrane, allowing for the creation of more varied crystal morphologies, including flower-shaped, onion-shaped, and needle-like crystals, with improved mechanical properties and integration with biological tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ELP membranes are used as substrates, then the substrate provides a biocompatible framework, but the ability to form varied crystal morphologies and integrate with underlying crystal structures is limited
Solution Approach 1:
The patent incorporates calcium ions into the ELP substrate at controlled concentrations and distributions, changing the chemical parameters of the substrate to enable diverse crystal morphologies (needle-like, plate-like, spherical) and improve integration with underlying crystal structures such as bone and dental enamel
Solution Approach 2:
The patent creates a composite substrate by combining ELP polymers with embedded calcium ions and hydroxyapatite crystals, forming a multi-phase material that exhibits both the biocompatibility of ELP and the crystal-forming capabilities of calcium-based minerals, enabling varied crystal morphologies and effective integration with biological tissues
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 use of calcium-ion-embedded polypeptide substrates enables the formation of crystals with enhanced stiffness, toughness, hardness, wear resistance, compressive strength, and acid resistance, closely mimicking the mechanical characteristics of natural dental enamel and facilitating effective integration with bone and dental tissues.
Implementation Method 1
The present disclosure relates to a polypeptide substrate which can form crystal structures on both the interior and exterior of the membrane. Such substrates can be embedded with calcium ions.
Implementation Method 2
ELP membranes are known to form crystals that mimic natural enamel as outlined in WO2017168183. The present disclosure relates to a polypeptide substrate which can form more varied crystal structures including flower-shaped, onion-shaped, and needle-like crystals.
Implementation Method 3
These molecules undergo a phase transition at a certain transition temperature (Tt), which results in the transition from a soluble to an insoluble form. In solutions with a temperature lower than Tt, free polymer chains remain in an unordered state showing full hydration (the soluble form). In solutions with temperatures exceeding Tt, polymer chains show a more ordered structure (known as the β-spiral), stabilized by hydrophobic interactions and intramolecular type β structures increasing the association of polymer chains.
Data Source
AI summary
The disclosure is directed towards polypeptide substrates and methods of synthesis thereof. Such substrates can be embedded with calcium ions from a number of ionic sources. These calcium-embedded, polypeptide substrates can be used to grow a variety of crystal structures including flower-shaped, onion-shaped, and needle-like crystal structures. As such, the disclosure is additionally directed towards methods of crystal growth from polypeptide substrates. Compositions of the disclosure can be used in a wide variety of medical and other applications.