Biodegradable Polycarbonate Antiviral Polymer
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Solution Overview
Problem
Current antiviral agents are ineffective against rapidly mutating viruses due to their specificity to particular virus types and structures, leading to drug resistance and limited treatment options for various viral infections.
Innovation Solution
Development of biocompatible and biodegradable sulfonated polycarbonate polymers with a broad spectrum antiviral property, capable of inhibiting viral infections by forming complexes with viral surface proteins, thereby preventing binding to cell receptors and mitigating drug resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antiviral agents are designed with high specificity to target particular virus types, then they can effectively inhibit specific viral infections, but they become ineffective against rapidly mutating viruses and lead to drug resistance
Solution Approach 1:
The patent applies universality by designing a polymer with a dual-functional structure: a hydrophobic region that universally binds to viral surface proteins regardless of virus type, and a hydrophilic region that interacts with aqueous environments. This universal binding mechanism allows the single polymer structure to be effective against multiple virus types including RNA viruses, DNA viruses, enveloped viruses, and non-enveloped viruses, thereby resolving the contradiction between specificity and broad-spectrum activity
Solution Approach 2:
The patent employs parameter changes by systematically varying the ratio of hydrophobic to hydrophilic monomers in the polymer composition, as well as adjusting the molecular weight and degree of sulfonation. These parameter adjustments optimize the polymer's antiviral activity across different virus types while maintaining low cytotoxicity, allowing the same polymer framework to adapt to different viral targets without requiring virus-specific modifications
2Reliability
If antiviral drugs are developed for each individual virus type, then they can address specific viral infections, but it becomes impractical to deal with the vast number of virus types and subtypes
Solution Approach 1:
The polymer is designed as a universal antiviral agent that can treat multiple virus types with a single compound. The hydrophobic-hydrophilic structure enables broad-spectrum activity against RNA viruses, DNA viruses, enveloped viruses, and non-enveloped viruses, replacing the need for multiple virus-specific drugs and significantly reducing the complexity of antiviral treatment protocols
3Reliability
If polymers with high antiviral activity are designed, then they can effectively eliminate viruses, but they may exhibit increased cytotoxicity
Solution Approach 1:
The patent applies local quality by creating distinct hydrophobic and hydrophilic regions within the polymer structure. The hydrophobic regions provide strong binding to viral surface proteins for high antiviral activity, while the hydrophilic regions (sulfonate groups) interact favorably with aqueous environments and cell membranes, reducing cytotoxicity. This spatial separation of functions allows the polymer to maintain high antiviral efficacy while being biocompatible
Solution Approach 2:
The patent optimizes the balance between antiviral activity and cytotoxicity by adjusting the hydrophobic-hydrophilic monomer ratio, molecular weight, and degree of sulfonation. By carefully tuning these parameters, the polymer achieves maximum antiviral effect at low concentrations while maintaining low cytotoxicity, as evidenced by the IC50 values showing high cell viability even at elevated polymer concentrations
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 polymers demonstrate high antiviral activity against multiple virus types, including RNA and DNA viruses, enveloped and non-enveloped viruses, with low cytotoxicity and tunable hydrophilic/hydrophobic balance, effectively eliminating viruses at low concentrations.
Implementation Method 1
at least one carbonate monomer with a hydrophobic alkyl group
Implementation Method 2
at least one carbonate monomer with a hydrophilic sulfonate group
Data Source
AI summary
A water-soluble polymer having an aliphatic polycarbonate backbone, a first carbonate monomer with at least one hydrophilic functionality, and a second carbonate monomer with at least one hydrophobic functionality is able to completely and quickly eliminate a virus from a human and/or animal cell. The at least one hydrophilic functionality is a sulfate, a sulfonate, a carboxylate, and/or a phosphate and the at least one hydrophobic functionality is an alkyl. The hydrophilic/hydrophobic functionalities of the polymer may be tuned to enhance the antiviral properties of the polymer and/or to decrease any cytotoxicity associated with the application of the polymer to a human and/or animal cell. The antiviral polymer is biocompatible and biodegradable.