Menaquinone-Binding Peptides for Multidrug-Resistant Bacteria

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Solution Overview

Problem

The emergence of multidrug-resistant pathogens necessitates the development of antibiotics that target menaquinone (MK) to overcome antimicrobial resistance, as current mechanistically novel antibiotics are scarce.

Innovation Solution

Development of menaquinone-binding compounds comprising specific amino acid sequences that bind directly to MK, inhibiting bacterial growth and inducing membrane disruption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If synthetic small molecules are used to inhibit MK biosynthesis, then antibacterial activity is achieved, but the number of available chemical entities is limited and therapeutic development is hindered

Engineering Contradiction:

Improvenumber of chemical entitiesVSAvoidtherapeutic development success

Core Design Contradiction:

Quantity of substanceVSEase of manufacture

Solution Approach 1:

The patent changes the fundamental parameter of molecular structure from small synthetic molecules to peptide-based compounds with specific amino acid sequences. This parameter change enables access to a vastly larger chemical space while maintaining antibacterial activity through MK binding, thereby resolving the limitation of few available chemical entities

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention uses composite peptide structures with specific amino acid compositions (including hydrophobic and charged residues) to create compounds that bind to MK. This composite approach allows for diverse chemical entities with different properties, expanding the toolkit for therapeutic development

Inventive Principle:

Principle #40Composite materials

2Reliability

If existing antibiotics are used to treat infections, then bacterial growth is inhibited, but antimicrobial resistance emerges and current antibiotics become ineffective

Engineering Contradiction:

Improveantibacterial efficacyVSAvoidantimicrobial resistance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and targets a specific essential component (menaquinone) of bacterial metabolism that is absent in humans. By focusing on this unique target, the invention achieves reliable antibacterial efficacy while avoiding the resistance problem that arises from targeting conserved pathways, as the target is inherently different from human biology

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of inhibiting bacterial metabolism by blocking enzymatic pathways (conventional approach), the invention inverts the strategy by directly binding to the essential lipid product (MK) itself. This inversion creates a new mechanism of action that bypasses resistance mechanisms targeting enzymatic steps

Inventive Principle:

Principle #13The other way round (Inversion)

3Adaptability or versatility

If new antibiotics are developed to overcome resistance, then therapeutic efficacy is improved, but the pipeline for novel mechanisms is scarce and development is difficult

Engineering Contradiction:

Improvemechanism of action diversityVSAvoiddevelopment complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent identifies a universal binding motif (GXLXXXW) that can be used across multiple peptide compounds to achieve MK binding. This universal motif simplifies the development process by providing a common design framework, while allowing versatility through variation in the peptide sequence and structure

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention segments the peptide structure into functional regions: the conserved GXLXXXW motif responsible for MK binding, and variable regions that can be optimized for different bacterial targets and resistance profiles. This segmentation enables systematic exploration of the chemical space while maintaining a clear functional core

Inventive Principle:

Principle #1Segmentation

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 compounds effectively inhibit the growth of multidrug-resistant bacteria, including Gram-positive bacteria and Mycobacterium tuberculosis, demonstrating broad-spectrum antibacterial activity and potential therapeutic efficacy in animal models.

Implementation Method 1

binding directly to MK to induce membrane disruption and rapid cell lysis

Methodology Applied

Scientific EffectDirect binding:

Data Source

PatentUS20250320248A1Menaquinone-binding compounds and methods of use thereof

Publication Date: 2025.10.16 THE ROCKEFELLER UNIV

AI summary

The present invention provides methods, compositions, and articles of manufacture useful for treatment of multidrug-resistant pathogens and related conditions. The present invention provides compositions and methods incorporating and utilizing menaquinone-binding compounds or derivatives or variants thereof.