Antimicrobial Peptides Targeting Resistant Microorganisms
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Solution Overview
Problem
Current antimicrobial agents face challenges with antibiotic resistance and allergic reactions in humans, and there is a need for non-allergenic, effective peptides that can target resistant microorganisms without inducing significant resistance development.
Innovation Solution
Development of short peptides derived from coagulation proteins with specific amino acid sequences that exhibit antimicrobial activity, stability, and reduced hemolytic potential, allowing for efficient targeting of Gram-negative and Gram-positive bacteria, fungi, and viruses, while minimizing ecological impact and allergic reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antibiotic agents are used to treat infections, then bacterial growth is inhibited, but antibiotic resistance develops and allergic reactions occur
Solution Approach 1:
The invention segments the problem by developing entirely new antimicrobial agents (peptides and proteins) that are structurally and mechanistically distinct from traditional antibiotics. These peptides represent a separate class of compounds that target bacteria through different mechanisms, thereby avoiding the resistance issues that have plagues antibiotic therapy.
Solution Approach 2:
The invention changes the fundamental parameters of antimicrobial therapy by using peptides with specific amino acid sequences and structures that differ radically from conventional antibiotics. The peptides are designed with specific properties (amphipathic structure, cationic charge) that enable them to interact with bacterial membranes in a way that traditional antibiotics cannot, thus overcoming resistance.
2Reliability
If traditional antimicrobial peptides are used, then bacterial membranes are disrupted, but hemolytic activity damages human cells
Solution Approach 1:
The invention applies local quality by designing peptides with specific amino acid compositions and structural features that are concentrated at particular regions of the peptide molecule. The amphipathic structure concentrates hydrophobic and hydrophilic regions in specific patterns that enable selective interaction with bacterial versus human cell membranes, achieving high antimicrobial activity with low hemolytic potential.
Solution Approach 2:
The invention creates peptides that can universally target different types of bacteria (Gram-positive and Gram-negative) while simultaneously maintaining selectivity against human cells. The peptides exhibit multi-functionality by being able to disrupt various bacterial membrane structures without affecting eukaryotic cell membranes, achieving both broad-spectrum antimicrobial activity and low toxicity.
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 peptides demonstrate effective antimicrobial activity against resistant microorganisms, reduce the risk of allergic reactions, and maintain stability in physiological environments, enhancing the treatment of infections and preventing microbial growth without inducing significant resistance or ecological harm.
Implementation Method 1
Molecules kill bacteria by permeating their membranes
Data Source
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AI summary
The invention relates to a molecule comprising at least the amino acid se- quence X1 X2 X3 X4 X5 X6 W X8 X9 X10 wherein X4,6,9 is any amino acid residue, X1 is I, L or V, X2 is not C, X3 is A, E, Q, R or Y, X5 is not R, X8 is I or L, X10 is not H and wherein said molecule have a length of from about 10 to about 100 amino acid residues or an analogue thereof. The invention also relates to compositions comprising said molecule and use of the molecule and/or composition of the inven- tion to combat microorganisms, such as bacteria, viruses, fungi, including yeast, and parasites.