Phosphate-Containing Copolymers for Virulence-Factor Suppression

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Solution Overview

Problem

Existing treatments for microbial infections often destroy both harmful and beneficial bacteria, contributing to antibiotic resistance and posing risks to patients, particularly during surgical procedures, while newer approaches aim to suppress pathogen virulence without eliminating beneficial microbes.

Innovation Solution

Development of phosphate-containing copolymers that inhibit the expression of virulence factors in microbes, preserving beneficial bacteria by administering medical compositions containing these copolymers to provide phosphate and suppress microbial virulence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional treatments are used to eliminate pathogens, then microbial infections are treated, but beneficial bacteria are destroyed and antibiotic resistance increases

Engineering Contradiction:

Improveinfection treatment efficacyVSAvoidbeneficial bacteria

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The invention extracts and targets only the virulence factors of pathogens for suppression, leaving the beneficial bacteria intact. The phosphate-containing copolymer specifically binds to and suppresses virulence factors without affecting the beneficial microbial community, thus treating infections while preserving beneficial bacteria.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The phosphate-containing copolymer acts as an intermediary substance that mediates between the host and pathogens. It suppresses pathogen virulence through phosphate competition and direct interaction with virulence factors, while simultaneously providing beneficial effects without directly killing either pathogens or beneficial bacteria.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If antibiotics are administered to treat infections, then pathogen growth is inhibited, but antibiotic resistance develops and beneficial microbes are eliminated

Engineering Contradiction:

Improveinfection controlVSAvoidantibiotic resistance

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The invention converts the harmful effect of phosphate depletion (which triggers virulence) into a beneficial therapeutic mechanism. By providing phosphate through the copolymer, the treatment suppresses virulence factors and prevents infection progression without selecting for antibiotic resistance, thus converting a potential harm into a therapeutic benefit.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Loss of substance

If virulence suppression is achieved without destroying microbes, then beneficial bacteria are preserved, but new treatment methods are required

Engineering Contradiction:

Improvebeneficial bacteriaVSAvoidtreatment methodology

Core Design Contradiction:

Loss of substanceVSDevice complexity

Solution Approach 1:

The invention uses a composite phosphate-containing copolymer structure combining hydrophilic phosphate groups with hydrophobic polymer chains. This composite material provides both water solubility and specific interaction with virulence factors, achieving virulence suppression through the unique properties of the composite structure without requiring complex treatment protocols.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS12448484B2Phosphate-containing copolymers for virulence suppression

Publication Date: 2025.10.21 3M INNOVATIVE PROPERTIES CO

AI summary

Phosphate-containing copolymers, medical compositions containing the phosphate-containing copolymers, and methods of suppressing microbial virulence are provided. By suppressing virulence, administration and/or application of the medical compositions can be used to prevent, mitigate, or treat a microbial infection. The phosphate-containing copolymers are prepared by phosphorylating either a random copolymer or a random copolymeric block that contains monomeric units of propylene oxide and glycidol.