Polyproline Nanocage Structure for Stable Biocompatible Host Molecules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cage compounds used in vivo applications face issues with toxicity from metal complexes or aromatic rings, and instability due to non-covalent connections that can lead to structural collapse in complex environments.
Innovation Solution
A polyproline nanocage compound is designed with cyclic peptide scaffolds and connecting molecules, formed by polyproline helix rods and turn-angle molecules, using a manufacturing method involving de-protecting, cycloaddition, and connecting steps to create a stable, biocompatible structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal complexes or aromatic rings are used as cage compound frameworks, then structural stability and rigidity are improved, but toxicity increases when applied in vivo
Solution Approach 1:
The patent changes the chemical composition parameters of the cage framework from traditional metal complexes or aromatic rings to polyproline-based peptide structures. This parameter change maintains structural stability through the rigid polyproline II helix conformation while eliminating toxicity associated with metal complexes, resolving the contradiction between strength and harmful factors
Solution Approach 2:
The patent creates a composite structure combining polyproline helix rods with turn-angle molecules and functional group carriers. This composite approach maintains structural integrity through the peptide scaffold while allowing biocompatible functional groups to be attached, simultaneously achieving stability and reduced toxicity
2Object-affected harmful factors
If biomolecules such as DNA are used to assemble cage compounds, then biocompatibility is improved, but molecular volume becomes very large
Solution Approach 1:
The patent changes the assembly approach from large biomolecular complexes (DNA) to compact polyproline-based peptide structures. The polyproline II helix conformation provides a dense, rigid framework that achieves biocompatibility through natural amino acid composition while maintaining a compact molecular volume suitable for host-guest applications
3Ease of manufacture
If non-covalent connections are used to assemble cage compounds, then ease of assembly is improved, but structural stability deteriorates in complicated environments
Solution Approach 1:
The patent divides the cage structure into discrete polyproline helix rod segments connected by turn-angle molecules. Each segment can be synthesized independently with controlled functional groups, maintaining ease of modular assembly while the covalent bonds within each segment provide structural stability in complicated environments
Solution Approach 2:
The patent creates a composite structure where polyproline helix rods are covalently bonded to turn-angle molecules and functional group carriers. This covalent composite architecture maintains structural integrity in complex environments while allowing controlled assembly through designed functional group interactions
4Ease of manufacture
If functional groups are randomly distributed on cage compounds, then ease of functionalization is improved, but precision of functional group placement deteriorates
Solution Approach 1:
The patent applies local quality by incorporating functional group carriers at specific, predetermined positions on the polyproline helix rods. Each carrier is placed at a defined location along the helix, enabling precise spatial control of functional group placement while maintaining ease of functionalization through modular carrier attachment
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 polyproline nanocage compound provides a stable, biocompatible structure suitable for hosting guest molecules, acting as an artificial enzyme or receptor, with precise functional group placement for selective interactions and reactions.
Implementation Method 1
polyproline helix rods
Implementation Method 2
polyproline helix rods
Implementation Method 3
connected by one of the at least three turn-angle molecules so as to form a closed ring
Implementation Method 4
The at least three connecting molecules are respectively connected from the at least three polyproline helix rods of one of the two cyclic peptide scaffolds to the at least three polyproline helix rods of the other of the two cyclic peptide scaffolds
Data Source
AI summary
A polyproline nanocage compound includes two cyclic peptide scaffolds and at least three connecting molecules. The two cyclic peptide scaffolds include at least three polyproline helix rods and at least three turn-angle molecules. Each of the at least three polyproline helix rods is composed of a plurality of repeat units. Two of the at least three polyproline helix rods are connected by one of the at least three turn-angle molecules so as to form a closed ring. The at least three connecting molecules are respectively connected from the at least three polyproline helix rods of one of the two cyclic peptide scaffolds to the at least three polyproline helix rods of the other of the two cyclic peptide scaffolds.